Pendimethalin (PMN) is a potent agrochemical that has shown severe neural alterations. Sanguinarine (SAN) is a naturally derived alkaloid that exhibits a wide range of biological properties. The curre Show more
Pendimethalin (PMN) is a potent agrochemical that has shown severe neural alterations. Sanguinarine (SAN) is a naturally derived alkaloid that exhibits a wide range of biological properties. The current research was conducted to explore the palliative potential of SAN against PMN-induced neurotoxicity. Thirty-two Sprague Dawley rats were divided into the control, PMN (125 mg/kg), PMN (125 mg/kg) + SAN (15 mg/kg), and SAN (15 mg/kg) alone treated group. PMN intoxication upregulated the mRNA expressions of Aif1 (iba1), cd68, TNF-α, IL-10, IL-6, IL-1β, Nos2, Arg1, and Trem2 while inhibiting the mRNA expression of Tmem119. Neural tissues showed altered redox state after PMN exposure as evidenced by escalated levels of ROS and MDA coupled with marked declined in the activities of HO-1, GPx, CAT, GSR, SOD, and GST. Additionally, PMN administration provoked a sharp decline in the levels of NGF, BDNF, GDNF, Synaptophysin, and PSD-95. Moreover, exposure of PMN elevated the levels of Caspase-9, Bax, and Caspase-3 coupled with a significant reduction in the levels of Bcl-2. Neural tissues showed severe morphological alterations including vacuolar degeneration, neuronal loss, microglial activation, apoptotic bodies, capillary congestion, perineuronal vacuolation, and neural edema after PMN intoxication. Importantly, SAN supplementation notably alleviated neural damage via suppressing the activation of microglial and inflammatory pathways along with regulating redox profile, apoptotic indices, and histopathological alterations. Our in-silico assessment showed excellent binding affinity of SAN with key regulatory proteins thereby suggesting its critical role in suppressing the activation of microglial cells. Show less
Fujian Tablets (FJT), a traditional Chinese medicinal (TCM) preparation, has been clinically used in the rehabilitation of neurological disorders related to ischemic brain injury in the context of TCM Show more
Fujian Tablets (FJT), a traditional Chinese medicinal (TCM) preparation, has been clinically used in the rehabilitation of neurological disorders related to ischemic brain injury in the context of TCM theory. However, its molecular mechanism underlying the promotion of post-ischemic stroke motor function recovery, especially via regulating corticospinal tract (CST) remodeling-a key structure for motor control-remains unelucidated. This study aimed to investigate the effect of FJT on CST remodeling in the denervated hemisphere and motor function recovery in middle cerebral artery occlusion (MCAO) rats, and to explore its potential mechanism by focusing on the balance between precursor brain-derived neurotrophic factor (proBDNF) and mature BDNF (mBDNF), which is tightly regulated by BDNF-cleaving enzymes (Pcsk1 and Furin). The MCAO rat model was established using the intraluminal filament method. Model rats were randomly divided into four groups: MCAO model group, FJT low-dose group, FJT medium-dose group, and FJT high-dose group. Motor function was evaluated by Catwalk gait analysis (assessing average speed, step length, and standing time). CST remodeling and conduction efficiency were determined via biotinylated dextran amine (BDA) neural tracing and motor evoked potential (MEP) detection, respectively. The mRNA and protein expressions of BDNF, cleaving enzymes (Pcsk1, Furin), and related receptors (TrkB, p75NTR, Sortilin) in brain tissues were measured using quantitative real-time polymerase chain reaction (RT-qPCR) and Western blot. BDNF silencing experiment was performed to verify the role of BDNF in FJT-induced effects. Additionally, in vitro neuronal culture was used to observe the effects of FJT, exogenous mBDNF, and Pcsk1/Furin inhibitors on neuronal growth. Compared with the MCAO model group, medium-dose FJT exhibited the most significant therapeutic effects. Specifically, FJT notably improved gait parameters increasing average speed from 20.77 mm/s (MCAO) to 25.71 mm/s (FJT) and step length by approximately 21.14 %. Furthermore, FJT enhanced MEP conduction efficiency and promoted CST remodeling, characterized by a 5.26 % increase in BDA-positive nerve fibers and elevated growth-associated protein 43 (GAP43) expression in the denervated hemisphere. At the molecular level, FJT upregulated the mRNA and protein expressions of Pcsk1 and Furin, increased the levels of BDNF and its functional receptor TrkB, and downregulated the expressions of proBDNF-preferring receptors p75NTR and Sortilin, ultimately shifting the proBDNF/mBDNF ratio toward mBDNF dominance. BDNF silencing significantly attenuated these improvements, reversing FJT-induced motor recovery and CST remodeling. In vitro, FJT-promoted neuronal growth was mimicked by exogenous mBDNF but reversed by Pcsk1/Furin inhibitors. Compared with the MCAO model group, medium-dose FJT exhibited the most significant therapeutic effects. Specifically, FJT notably improved gait parameters, increasing the average speed from 20.77 mm/s (MCAO) to 25.71 mm/s (FJT) and step length by approximately 21.14 %. Furthermore, FJT enhanced MEP conduction efficiency and promoted CST remodeling, characterized by a 5.26% increase in BDA-positive nerve fibers and elevated Growth-Associated Protein 43 (GAP43) expression in the denervated hemisphere. At the molecular level, FJT upregulated the mRNA and protein expressions of Pcsk1 and Furin, increased the levels of BDNF and its functional receptor TrkB, and downregulated the expressions of proBDNF-preferring receptors p75NTR and Sortilin, ultimately shifting the proBDNF/mBDNF ratio toward mBDNF dominance. BDNF silencing significantly attenuated these improvements, reversing FJT-induced motor recovery and CST remodeling. In vitro, FJT-promoted neuronal growth was mimicked by exogenous mBDNF but reversed by Pcsk1/Furin inhibitors. Show less
Visceral pain is frequently accompanied by depression, a comorbidity involving central neuroinflammation and abnormal neuronal plasticity. The P2X7 receptor (P2X7R) plays a crucial role in neuroinflam Show more
Visceral pain is frequently accompanied by depression, a comorbidity involving central neuroinflammation and abnormal neuronal plasticity. The P2X7 receptor (P2X7R) plays a crucial role in neuroinflammation and pyroptosis, while Jujuboside A (JuA), a major saponin extracted from Ziziphus jujuba seeds, has been reported to exert significant antidepressant and analgesic effects. In this study, we systematically evaluated the regulatory effects of JuA on the P2X7R-brain-derived neurotrophic factor (BDNF) pathway and on pyroptosis and apoptosis using a rat model of colorectal distension (CRD) and primary neuron/astrocyte cultures. JuA markedly alleviated visceral hypersensitivity and depressive-like behaviors in CRD rats and reduced P2X7R expression in both the spinal cord (SC) and hippocampus (HPC). Further investigations in vitro revealed that JuA inhibited excessive P2X7R activation in SC astrocytes, thereby decreasing the expression of NLRP3, Caspase-1, GSDMD, IL-1β and TNF-α, indicating suppression of pyroptosis. Similarly, JuA exerted an anti-pyroptotic effect in HPC astrocytes and inhibited neuronal apoptosis by reducing Caspase-3 and Bax levels while increasing Bcl2 expression, leading to upregulation of HPC BDNF. Collectively, JuA targets P2X7R and suppresses downstream pyroptotic and apoptotic signaling in vitro, which may contribute to its neuroprotective effects. These findings provide experimental evidence supporting the potential of JuA as a therapeutic agent for comorbid visceral pain and depression. Show less
Current treatments for depression have focused on improving the dysregulated monoamine neurotransmitter systems in the brain. However, the conventional antidepressants based on the monoamine hypothesi Show more
Current treatments for depression have focused on improving the dysregulated monoamine neurotransmitter systems in the brain. However, the conventional antidepressants based on the monoamine hypothesis usually exert side effects and unsatisfactory responses. MicroRNAs (miRNAs) are smaller noncoding RNA which are highly expressed in the brain and play important roles in the development of neurological disorders. In this study we investigated the role of miRNAs in the occurrence of depression. A rat depression model was established by exposure to chronic mild stress (CMS) over 4 weeks. In the next week, the sucrose preference test (SPT), the forced swimming test (FST), and the open field test (OFT) were used to evaluate the depression-like behaviors. Then the rats were euthanized and total RNA was isolated from rat mPFC. We showed that the level of microRNA-129-5p (miR-129-5p) was significantly increased in the mPFC of CMS rats. Overexpression of miR-129-5p in the mPFC by bilateral microinjection of lenti-miR-129-5p virus (OE-miR-129-5p) induced the depression-like behaviors in control rats, accompanied with the impairment in neuronal structures and a decrease in synaptic plasticity. In contrast, knockdown of miR-129-5p in the mPFC by bilateral microinjection of lenti-miR-129-5p sponge virus (KD-miR-129-5p) ameliorated the depression-like behaviors in CMS rats, along with the improvement in neuronal structures and an increase in synaptic plasticity. Furthermore, we demonstrated that miR-129-5p targeted to the brain-derived neurotrophic factor (BDNF) in the mPFC to contribute to the development of depression. This study suggests that miR-129-5p in the mPFC impairs the neuronal structures and reduces the synaptic plasticity after the exposure to CMS, which underlies the development of CMS-induced depression-like behaviors in rats. Show less
Alzheimer's disease is characterized by intertwined pathologies including neuroinflammation, driven by microglial dysfunction, and metabolic disturbances such as lipid dyshomeostasis. Mesenchymal stem Show more
Alzheimer's disease is characterized by intertwined pathologies including neuroinflammation, driven by microglial dysfunction, and metabolic disturbances such as lipid dyshomeostasis. Mesenchymal stem cell-derived exosomes (MSC-Exos) hold therapeutic promise, Still, it is unknown whether they can simultaneously address these co-occurring impairments via specific molecular cargos, such as long non-coding RNAs (lncRNAs). Transcriptome sequencing of exosomes derived from human umbilical cord mesenchymal stem cells (hUC-MSCs) revealed high expression of the long noncoding RNA ENST00000629969 (hereinafter referred to as lncRNA-9969). We isolated exosomes from hUC-MSCs (WT-Exo) and established human umbilical cord blood mesenchymal stem cells stably knocked down for lncRNA-9969 via siRNA, from which corresponding exosomes (KD-Exo) were isolated. Cross-species analysis identified the mouse homolog of lncRNA-9969 as ENSMUST00000200021 (hereinafter referred to as lncRNA-0021). Cellular experiments employed an Aβ₂₅₋₃₅-induced SH-SY5Y cell model to evaluate the protective effects of exosomes. In animal experiments, 6-month-old APP/PS1 mice received biweekly tail vein injections of WT-Exo or KD-Exo for 4 weeks. Phenotypic and mechanistic analyses were subsequently conducted using the Morris water maze, Western blot, immunofluorescence, qPCR, and transmission electron microscopy. In Aβ-injured SH-SY5Y cells, WT-Exo significantly attenuated cellular damage and promoted Aβ clearance, whereas the protective effect of KD-Exo was markedly reduced. In APP/PS1 mice, WT-Exo treatment significantly improved spatial memory deficits and upregulated hippocampal expression of synaptic proteins synaptophysin (Syn) and brain-derived neurotrophic factor (BDNF). Molecular mechanism studies demonstrated that lncRNA-0021 directly binds mmu-miR-6361. Through this ceRNA mechanism, exosome-delivered lncRNA activated the mTOR/p70S6K autophagy pathway, regulated lipid metabolism-related genes, promoted microglial polarization toward the protective M2 phenotype, and suppressed pyroptosis. These beneficial changes were not observed in the KD-Exo-treated group. hUC-MSC-derived exosomes exert neuroprotective effects by delivering functional lncRNA-9969. Its highly conserved homolog in mice, lncRNA-0021, achieves coordinated multi-target regulation of neuroinflammation, pyroptosis, and metabolic disturbances by sequestering miR-6361 and activating downstream signaling pathways. This study elucidates the central role of exosomal lncRNAs in AD pathology and provides new insights for developing RNA-based multi-target therapeutic strategies. Show less
Maintaining nerve integrity and rescuing/regenerating injured neurons are pivotal for spinal cord injury (SCI) repair. Herein, an immuno-neuroprotectant (INPT) is developed to mitigate secondary SCI a Show more
Maintaining nerve integrity and rescuing/regenerating injured neurons are pivotal for spinal cord injury (SCI) repair. Herein, an immuno-neuroprotectant (INPT) is developed to mitigate secondary SCI and promote neuroregeneration via sequestration of neutrophil extracellular traps (NETs) and targeted delivery of brain-derived neurotrophic factor (BDNF). To construct the INPT, positively charged BDNF is engineered into negatively charged A-BDNF nanoparticles (A-BDNF NPs) via reversible modification with adenosine triphosphate, and A-BDNF NPs are further coated with polySia-overexpressing microglia membrane (PBM). In SCI mice, intravenously injected INPT effectively accumulates in the injured spinal cord and then binds to NETs through the over-expressed polySia on PBM. This binding triggers PBM shedding from the NPs, and thereby, phosphatidylserine localized at the cytoplasmic leaflet of PBM is exposed and displayed on the NETs surface. Consequently, the PBM-bound NETs are cleared by phagocytes via efferocytosis, which provokes neuroprotective immune responses. Meanwhile, the mildly acidic environment triggers traceless restoration of A-BDNF NPs to the native BDNF to foster neuroregeneration. Thus, PBM-mediated NETs sequestration cooperates with BDNF-mediated neuroregeneration to restore neurological recovery. This study provides an enlightened approach for remedying NET-associated pathophysiological aberrations and also renders a facile yet effective platform for biomacromolecule delivery to the central nervous system. Show less
Insomnia and anxiety are highly comorbid, severely compromising quality of life. Efficacy of current pharmacological interventions for this dual condition remains limited. Zhi-Gan Formula (ZG), consis Show more
Insomnia and anxiety are highly comorbid, severely compromising quality of life. Efficacy of current pharmacological interventions for this dual condition remains limited. Zhi-Gan Formula (ZG), consisting of Zhi-Zi-Chi Decoction and Ganmai Dazao Decoction, two classic Traditional Chinese Medicine (TCM) formulae clinically widely used for insomnia or anxiety, holds promise as a therapeutic option for insomnia-anxiety comorbidity. This study aimed to assess ZG's sleep-promoting and anxiolytic efficacy, and investigate the novel mechanism through which pituitary adenylate cyclase-activating polypeptide (PACAP) in the medial prefrontal cortex (mPFC) modulates comorbid sleep and anxiety conditions. Mice received 4-chloro-DL-phenylalanine (PCPA) injections and were subsequently administered ZG or diazepam. Behaviors were assessed using the pentobarbital-induced sleep test, open-field test (OFT), and elevated plus-maze test (EPM). Key pathways were identified via network pharmacology analysis and validated using long-term potentiation (LTP) recordings and protein quantification. Viral-mediated PACAP knockdown vectors were transfected into the mPFC. PCPA administration induced insomnia and anxiety-like behaviors. ZG administered for 3 days significantly shortened sleep latency, prolonged sleep duration, and alleviated anxiety-like behaviors, whereas diazepam only partially improved anxiety-like behaviors. Network pharmacology analysis suggested ZG's engagement in neuropeptide-receptor interactions and synaptic transmission pathways. Assessments of synaptic plasticity showed that ZG improved mPFC LTP and the expression of synaptic proteins (PSD95, synapsin-1, BDNF) impaired in the model mice. Moreover, the expression of the neuropeptide PACAP and downstream eEF2 signaling for synaptic protein synthesis were all improved by ZG. Crucially, perfusion of a PACAP agonist in the mPFC brain slices from sleep-deprived mice rescued LTP deficits. Finally, mPFC PACAP knockdown abolished the therapeutic effects and the enhanced expressions of the synaptic proteins by ZG. ZG alleviated insomnia-anxiety comorbidity by restoring synaptic plasticity in the mPFC via the PACAP-eEF2-BDNF pathway, which may also shed light on the development of a novel therapeutic approach for the treatment of sleep-anxiety comorbidity. Show less
Given the potential of polyphenols to mitigate neurodegenerative diseases (NDDs), this meta-analysis investigated whether clinical evidence supports the use of polyphenols for neuroprotection and as n Show more
Given the potential of polyphenols to mitigate neurodegenerative diseases (NDDs), this meta-analysis investigated whether clinical evidence supports the use of polyphenols for neuroprotection and as nutritional strategies in NDDs. We analyzed different polyphenol types across seven NDDs, 13 studies involving 849 participants were included. Prespecified outcomes comprised global cognition (Mini-Mental State Examination, MMSE), domain-specific cognition (Alzheimer's Disease Cooperative Study-Cognitive Subscale, ADCS-Cog), activities of daily living (Alzheimer's Disease Cooperative Study-Activities of Daily Living, ADCS-ADL), neuropsychiatric symptoms (Neuropsychiatric Inventory, NPI), and selected biomarkers (plasma amyloid-β40 and brain-derived neurotrophic factor, BDNF). Reporting followed PRISMA 2020 guidelines, methods conformed to the Cochrane Handbook, and certainty of evidence was assessed using GRADE. Overall, polyphenol supplementation was associated with improved global cognition (pooled MD in MMSE = 2.06; 95% CI 0.62-3.49). In subgroup analyses, flavonoids were associated with a modest but significant improvement in MMSE scores, whereas stilbenes produced a significant benefit in daily functioning (ADCS-ADL) without clear gains in MMSE or ADCS-Cog and no consistent effects on NPI. Anthocyanidins, phenolic acids, and lignans did not significantly affect cognitive outcomes (MMSE or ADCS-Cog), and polyphenol subclasses did not yield robust or consistent changes in NPI or biomarker endpoints (Aβ40 and BDNF). Specific polyphenol subclasses therefore appear to confer selective cognitive and functional benefits, with stilbenes primarily supporting functional outcomes and flavonoids potentially enhancing global cognition. Show less
Docosahexaenoic acid (DHA) is indispensable for neurological health, yet its therapeutic potential is hampered by poor bioavailability and non-specific brain distribution. We hypothesized that co-admi Show more
Docosahexaenoic acid (DHA) is indispensable for neurological health, yet its therapeutic potential is hampered by poor bioavailability and non-specific brain distribution. We hypothesized that co-administering DHA with specific molecular carriers - eicosapentaenoic acid (EPA) or phosphatidylserine (PS) - would exploit distinct cellular transport pathways to achieve region-specific brain enrichment and associated neuroprotection. By dietary intervention using C57BL/6J mice, we employed regional lipidomics, ELISA, and western blotting to assess brain fatty acid incorporation, neurotrophic factor levels, inflammatory signaling, and transporter expression following supplementation with DHA alone or in combination with EPA or PS. Lipidomic analyses revealed striking, carrier-dependent spatial modulation of DHA. Co-administration with EPA enriched the cortex and striatum, while PS co-administration preferentially targeted the hippocampus and cortex. Mechanistically, both carrier-DHA complexes enhanced the expression of the key blood-brain barrier (BBB) transporter MFSD2A. Functionally, this precision delivery activated distinct neuroprotective programs. PS + DHA robustly upregulated the CREB-BDNF neurotrophic pathway, while EPA + DHA uniquely suppressed the NF-κB pathway, demonstrating potent anti-inflammatory effects. These results demonstrate that the choice of molecular carrier dictates both the spatial distribution of DHA and the nature of the ensuing neuroprotective response. Our findings establish that dietary co-supplementation with specific lipid carriers enables precise spatial delivery of DHA by engaging specific transporters, thereby activating distinct neuroprotective programs in a region-specific manner. This work provides a mechanistic framework for a precision nutrition strategy, tailoring DHA formulations to target specific neuroanatomical and cellular vulnerabilities in neurological disorders. Show less
Chronic stress, a key contributor to neurological disorders, is mechanistically linked to hypothalamic-pituitary-adrenal (HPA) axis dysregulation, neuroinflammation, and hippocampal neuronal apoptosis Show more
Chronic stress, a key contributor to neurological disorders, is mechanistically linked to hypothalamic-pituitary-adrenal (HPA) axis dysregulation, neuroinflammation, and hippocampal neuronal apoptosis. Current therapeutic approaches remain limited in efficacy and safety. Schisandrol A, a neuroactive lignan from Show less
p-Synephrine (p-Syn), a natural alkaloid isolated from Citrus aurantium L., promotes fat oxidation and is therefore widely used as a weight loss dietary supplement. It was recently reported to exert a Show more
p-Synephrine (p-Syn), a natural alkaloid isolated from Citrus aurantium L., promotes fat oxidation and is therefore widely used as a weight loss dietary supplement. It was recently reported to exert a potent antidepressant effect. However, its molecular targets remain undefined. Gastrodin (Gas), extracted from Gastrodia elata Blume, exerts antidepressant effects by targeting Melatonin Receptor 1A (MT This study aimed to evaluate whether MT Network pharmacology was applied to predict potential targets and associated signaling pathways for p-Syn and Gas. Molecular Docking simulations were employed to predict the possible binding sites of MT Using a network pharmacology approach and in vitro assays, we found that both p-Syn and Gas bind to MT1, activate the ERK/CREB signaling pathway, and up-regulate BDNF. In vivo assays showed that p-Syn alleviated Reserpine (Res)-induced depression-like symptoms in AB zebrafish larvae and C57 mice. Furthermore, p-Syn and Gas showed a remarkable synergistic effect. This study identifies a novel target for p-Syn and provides new insights into the antidepressant mechanisms of p-Syn and Gas that may contribute to the clinical application of these compounds in the development of new drugs for the treatment of depression. Show less
Ulcerative colitis (UC) is a chronic inflammatory bowel disease with systemic manifestations, including cognitive impairment linked to gut‒brain axis dysregulation. While probiotic therapies show prom Show more
Ulcerative colitis (UC) is a chronic inflammatory bowel disease with systemic manifestations, including cognitive impairment linked to gut‒brain axis dysregulation. While probiotic therapies show promise, their mechanisms in mitigating neuropsychiatric comorbidities remain unclear. Here, we investigated the therapeutic potential of Show less
Aging-related cognitive decline is a major concern in aging societies. Theobromine (TB), a cacao-derived methylxanthine, exerts neuroprotective effects through anti-inflammatory, antioxidant, and neur Show more
Aging-related cognitive decline is a major concern in aging societies. Theobromine (TB), a cacao-derived methylxanthine, exerts neuroprotective effects through anti-inflammatory, antioxidant, and neurotrophic mechanisms; however, its efficacy in aging models remains unclear. This study investigated the mechanisms underlying neuroprotective effects of chronic TB administration in senescence-accelerated mouse prone 8 (SAMP8), a model of age-related memory impairment. SAMP8 and SAMR1 mice were fed either a control diet or a diet supplemented with 0.05% TB for 50 d. Cognitive performance was evaluated by the novel object recognition (NOR) test. Neurotrophic factors (BDNF and NT-3), synaptic proteins (PSD95 and synaptophysin), and plasticity-related signaling molecules (phosphorylated CREB and TrkB) were analyzed in the prefrontal cortex and hippocampus. Inflammatory cytokines, lipid peroxides, and antioxidant enzymes were quantified. Molecular docking was used to assess TB's interaction with phosphodiesterase (PDE) enzymes. TB improved short-term memory in SAMP8, increasing discrimination index in the NOR test. This was accompanied by increased BDNF, NT-3, PSD95, and synaptophysin levels and enhanced CREB and TrkB phosphorylation. Furthermore, TB lowered the levels of pro-inflammatory cytokines (IL-1β, TNF-α) and phosphorylated NF-κB, reduced lipid peroxidation, and increased the levels of antioxidant markers (HO-1, GSH). These effects were minimal in SAMR1. No adverse effects on body weight or blood parameters were observed. Molecular docking indicated that TB binds to PDE enzymes with weaker inhibitory activity than selective inhibitors. TB enhances short-term memory and synaptic function in aged mice via neurotrophic, antioxidant, and anti-inflammatory mechanisms, supporting its potential as a safe dietary intervention for age-related cognitive decline. Show less
Neuroinflammation is a key pathogenic process in multiple central nervous system (CNS) disorders. It can lead to neuronal injury and cognitive decline through excessive glial activation and aberrant e Show more
Neuroinflammation is a key pathogenic process in multiple central nervous system (CNS) disorders. It can lead to neuronal injury and cognitive decline through excessive glial activation and aberrant engagement of the programmed cell death protein-1/programmed death-ligand 1 (PD-1/PD-L1) checkpoint axis. To address these pathologies, we engineered a PD-1-enriched macrophage-membrane, lactoferrin-modified, PEGylated, glycyrrhizic-acid-loaded biomimetic hybrid liposome (PMLpGL) for dual, precise modulation of the neuroinflammatory microenvironment. PMLpGL alleviates neuronal inhibitory signaling by reversibly sequestering excess PD-L1 via membrane-anchored PD-1, while its cargo GA suppresses high-mobility group box-1 (HMGB1)-driven inflammatory cascades, thereby returning inducible PD-1/PD-L1 expression and glial activation toward homeostasis. Physicochemical characterization showed a hydrodynamic diameter of 165 ± 3 nm and a zeta potential of -10.2 ± 0.2 mV. Engineered macrophage membranes displayed marked PD-1 overexpression, and ligand-depletion saturation assays demonstrated specific, saturable PD-1/PD-L1 binding. In a Transwell blood-brain barrier (BBB) model, PMLpGL achieved a 24-h permeability of 22.86 ± 0.14 %, indicating robust in-vitro BBB traversal. In vivo fluorescence imaging showed peak brain accumulation at 24 h with retention to 48 h; liquid chromatography-tandem mass spectrometry further confirmed brain targeting and persistence-at 12 h, brain GA with PMLpGL was ∼48-fold higher than free drug and remained quantifiable at 48 h. Pharmacodynamic evaluations in cells and mice demonstrated that PMLpGL suppresses glial activation and normalizes inducible checkpoint expression; reshapes the cytokine milieu by lowering IL-6, IL-1β, TNF-α, and HMGB1 while increasing IL-10, TGF-β, and brain-derived neurotrophic factor; and restores the synaptic protein synapsin-1. Correspondingly, PMLpGL significantly improved cognition in open-field, novel object recognition, and Morris water maze tests. Collectively, PMLpGL combines PD-1 decoy sequestration with GA-mediated upstream immunomodulation to attenuate neuroinflammatory cascades, protect neurons, and reverse cognitive deficits. By pairing BBB compatibility with microenvironment-precise regulation, this platform offers a promising therapeutic strategy for CNS diseases associated with cognitive decline. Show less
Growing evidence implicates accelerated biological aging in environmentally induced psychiatric disorders, yet its role in metal-associated depression remains unclear. Using NHANES data, we evaluated Show more
Growing evidence implicates accelerated biological aging in environmentally induced psychiatric disorders, yet its role in metal-associated depression remains unclear. Using NHANES data, we evaluated associations between heavy metal mixtures and depression. Bidirectional mediation analysis was used to assess reciprocal pathways linking heavy metals, biological aging, and depression. Simultaneously, candidate genes linking heavy metal exposure to depression and biological aging were identified by mining the Comparative Toxicogenomics Database, analyzing differentially expressed genes (DEGs) from the Gene Expression Omnibus, and integrating the resulting evidence within a toxicogenomic framework to explore potential molecular mechanisms. The prevalence of depression among participants was 8.66 %. Metal mixtures significantly increased depression risk. Notably, cadmium and antimony increased the risk of depression (OR: 1.52, 95 % CI: 1.19, 1.94 and OR: 1.54, 95 % CI: 1.22, 1.93). Both metals have low thresholds (0.227 μg/L and 0.053 μg/L, respectively). Additionally, lead, cobalt, and molybdenum showed positive associations in specific models. Although population-level exposure to heavy metals declined from 1999 to 2020, concentrations remained sufficient to elevate depression risk. Our correlation analysis also identified a strong correlation between PhenoAge and chronological age (r = 0.84, P < 0.001). Mechanistically, we found that accelerated PhenoAge partially mediated the associations of several metals with depression risk, including monomethylarsonic acid (β = 0.004; 95 %CI: 0.003,0.006), cadmium (β = 0.006; 95 %CI: 0.003, 0.010), lead (β = 0.009; 95 %CI: 0.006, 0.011), cobalt (β = 0.010; 95 %CI: 0.006, 0.013), molybdenum (β = 0.009; 95 %CI: 0.006, 0.011), and antimony (β = 0.008; 95 %CI: 0.005, 0.011). Pathway analysis and DEGs implicated the contribution of neurodegeneration-multiple diseases pathway, with core molecular targets centering on BDNF, IL6, GSK3B, PTGS2, and SOD1. These findings, which imply biological aging as a potential link between metal exposure and depression, call for revised safety thresholds and pinpoint molecular targets for intervention. Show less
Facial nerve injury (FNI) is a common peripheral neuropathy that severely impairs facial function and quality of life. Qianzheng Powder (QZP) is a traditional Chinese herbal formula used to treat faci Show more
Facial nerve injury (FNI) is a common peripheral neuropathy that severely impairs facial function and quality of life. Qianzheng Powder (QZP) is a traditional Chinese herbal formula used to treat facial paralysis clinically, yet its neuroprotective mechanisms remain unclear. This study aims to evaluate the therapeutic effects of QZP on FNI and potential underlying mechanisms. A FNI model was established in male C57BL/6 mice by performing facial nerve crush surgery. QZP (3.51 g/kg) was administered orally once daily for 14 days post-surgery. Facial function was assessed behaviorally. Tissue samples were collected on day 21 for histological evaluation, qPCR and Western blotting. Liver and kidney safety were also assessed via H&E staining and serum biochemical markers. QZP significantly improved facial motor function from day 7 post-injury. Additionally, QZP treatment mitigated neuronal loss in the facial motor nucleus, attenuated buccinator muscle atrophy, and enhanced myelin regeneration, as evidenced by increased MPZ and MBP expression. These were consistent with the increace of the BDNF, TrkB, and QZP promotes structural and functional recovery of facial nerve following injury, likely through activation of the BDNF/TrkB/CREB axis, and demonstrates a favorable safety profile. These findings support its potential as a therapeutic adjunct in peripheral nerve repair. Show less
Son Hung Tran, Siqi Zhang, Hyeon-Seong Lee+11 more · 2026 · Phytomedicine : international journal of phytotherapy and phytopharmacology · Elsevier · added 2026-04-24
Schisandrin C (SCC), a bioactive lignan compound derived from Schisandra chinensis (S. chinensis), has been demonstrated to promote intestinal health. However, the antidepressant activity of SCC and i Show more
Schisandrin C (SCC), a bioactive lignan compound derived from Schisandra chinensis (S. chinensis), has been demonstrated to promote intestinal health. However, the antidepressant activity of SCC and its impact on the gut‒brain axis have not been reported. This study aimed to investigate the antidepressant effects of SCC and elucidate its molecular mechanisms through modulation of the microbiota‒gut‒brain axis. Artificial intelligence (AI)-based target protein prediction, network pharmacology analysis, and experimental validation using intestinal cells, Caenorhabditis elegans, and mice models were conducted. Targeted metabolomics, gut microbiota analyses, and molecular biology techniques were employed for mechanistic elucidation. SCC treatment effectively suppressed depressive-like behaviors in mice subjected to chronic unpredictable mild stress (CUMS). SCC upregulated brain-derived neurotrophic factor (BDNF) expression in the brain by regulating the AKT/CREB/BDNF signaling pathway. Additionally, integrated network pharmacology, molecular docking, and metabolomics analyses revealed that SCC significantly increased brain serotonin levels by inhibiting monoamine oxidase (MAO) activity. Furthermore, SCC increased the abundance of Akkermansia and Bifidobacterium, as observed both in the synthetic microbial community in vitro and in the gut microbiota in vivo. Additionally, SCC effectively alleviated intestinal barrier dysfunction and reduced intestinal inflammation in vitro in intestinal cells, in vivo in C. elegans infected with Bacteroides fragilis, and in vivo in the CUMS-induced mice model. SCC improves depressive-like behaviors by modulating the microbiota‒gut‒brain axis. These findings underscore the potential of SCC as an effective therapeutic agent for depression. Show less
Substance use disorder is characterized by compulsive seeking behavior that is associated with aberrant synaptic plasticity in mature neurons. Environmental enrichment (EE) has been shown to increase Show more
Substance use disorder is characterized by compulsive seeking behavior that is associated with aberrant synaptic plasticity in mature neurons. Environmental enrichment (EE) has been shown to increase adult hippocampal neurogenesis and exert beneficial effects on addictive behaviors. However, the mechanisms of EE's effects on methamphetamine (METH)-induced synaptic plasticity in mature and newborn neurons remain unclear. We reported that EE decreased METH-induced seeking behavior with a decrease in the activity of mature granule cells and an increase in the number of newborn granule cells. Furthermore, the aberrant glutamatergic transmission in hippocampal mature and newborn granule cells was differentially regulated by EE. Moreover, EE restored the normal synaptic plasticity, accompanied by enhancement of brain derived neurotrophic factor (BDNF) expression. Importantly, the intervention of BDNF reversed the effects of EE on METH-induced reinstatement behavior and glutamatergic transmission in both mature and newborn cells. Finally, specifically knocking out the newborn neurons reversed the changes of EE in abnormal plasticity of mature neurons, as well as in seeking and cognitive behaviors. Taken together, regulating synaptic plasticity of mature and newborn neurons is involved in METH-induced seeking behavior and cognitive impairments, which highlights a critical role of adult neurogenesis in the treatment of METH addiction. Show less
Cerebral infarction (CI) is characterised by a high incidence, significant disability, and increased mortality. Tongqiao Huoxue Decoction (TQHXD), a classical formula, is designed to promote blood cir Show more
Cerebral infarction (CI) is characterised by a high incidence, significant disability, and increased mortality. Tongqiao Huoxue Decoction (TQHXD), a classical formula, is designed to promote blood circulation and eliminate stasis. We investigated the effects of TQHXD on PC12 cells subjected to oxygen-glucose deprivation (OGD). The results demonstrated that during the early phase of OGD, TQHXD enhanced anaerobic glycolytic flux and increased ATP production, thereby compensating for energy deficits. Concurrently, lactate acts as a signalling molecule that binds to hydroxycarboxylic acid receptor 1 (HCAR1) and activates brain-derived neurotrophic factor (BDNF) and tropomyosin receptor kinase B (TrkB), which protect PC12 cells from OGD-induced damage and reduce neuronal apoptosis. In the late phase of OGD, TQHXD facilitated the utilisation of lactate as an energy substrate in PC12 cells, generating ATP via lactate dehydrogenase B (LDHB), maintaining cellular energy homeostasis, protecting neurones, and reducing apoptosis. TQHXD modulates glycolysis and lactate metabolism, offering a potential therapeutic strategy for cerebral infarction and a possible sequential intervention approach for targeted therapy. Show less
Acrylamide (ACR), a potential neurotoxin prevalent in carbohydrate-rich foods, poses a significant public health concern. While ACR exposure is known to induce tau phosphorylation and synaptic impairm Show more
Acrylamide (ACR), a potential neurotoxin prevalent in carbohydrate-rich foods, poses a significant public health concern. While ACR exposure is known to induce tau phosphorylation and synaptic impairment, the underlying mechanisms remain incompletely understood. The aberrant activation of the protein kinase RNA-like endoplasmic reticulum kinase (PERK)-eukaryotic initiation factor-2α (eIF2α) signaling pathway is emerging as a major common theme in neurodegenerative disorders. This study investigated the role of the PERK-eIF2α signaling pathway in ACR-induced neurotoxicity using human neuroblastoma SH-SY5Y cells. Our results showed that ACR exposure not only significantly increased tau phosphorylation at specific epitopes (Ser Show less
Kaempferol, a natural dietary flavonoid, has shown neuroprotective potential. However, its mechanisms of protection against age-related cognitive decline, especially those mediated
Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by cognitive dysfunction that is closely associated with cholinergic system damage. Estrogen deficiency is a well-est Show more
Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by cognitive dysfunction that is closely associated with cholinergic system damage. Estrogen deficiency is a well-established risk factor for AD in women. Osthole (OST), a phytoestrogen with mild, bidirectional regulatory properties, has been proposed as a potential estrogen replacement. This study aimed to investigate the mechanisms by which OST ameliorates cognitive impairment. Cognitive deficits were induced in female Sprague-Dawley rats by bilateral ovariectomy (OVX), and OST was subsequently administered by oral gavage. Behavioral tests revealed that OST significantly improved learning and memory and reduced anxiety-like and depression-like behaviors in OVX rats. H&E staining and Nissl staining demonstrated that OST reversed neuronal damage in the hippocampus and cortex. Western blotting, ELISA, and immunofluorescence staining indicated that OST treatment restored the estrogen-cholinergic-NGF axis: E Show less
Depression is a major global health burden, and current treatments are limited by delayed onset and incomplete efficacy, highlighting the need for novel, mechanism-based therapies. Chronic restraint s Show more
Depression is a major global health burden, and current treatments are limited by delayed onset and incomplete efficacy, highlighting the need for novel, mechanism-based therapies. Chronic restraint stress (CRS) induces behavioral, hormonal, and synaptic changes relevant to depression, but the role of adiponectin signaling remains unclear. Here, we examined whether the adiponectin receptor agonist AdipoRon exerts antidepressant-like effects via brain-derived neurotrophic factor (BDNF)/tropomyosin receptor kinase B (TrkB) signaling in mice subjected to 14 days of CRS. CRS produced anxiety- and depression-like behaviors, elevated plasma corticosterone, reduced circulating adiponectin, and selectively decreased hippocampal adiponectin and adiponectin receptor 2 (AdipoR2), accompanied by reduced PSD-95 and GluA1 in CA3 and the dentate gyrus (DG). AdipoRon treatment (20 mg/kg, days 8-14) prevented behavioral deficits, normalized corticosterone and adiponectin levels, and restored hippocampal AdipoR2, PSD-95, and GluA1 expression in CA3 and DG. AdipoRon also reversed CRS-induced decreases in hippocampal phosphorylated AMPK (p-AMPK), PPARα, BDNF, and phosphorylated TrkB (p-TrkB), with p-AMPK/AMPK and PPARα levels positively correlating with BDNF. Immunofluorescence confirmed BDNF recovery in CA3 and DG. Importantly, pretreatment with the TrkB antagonist ANA-12 abolished the behavioral, hormonal, and molecular effects of AdipoRon, indicating that its actions require BDNF-TrkB activation. These findings suggest that AdipoRon mitigates CRS-induced deficits via hippocampal AdipoR2-AMPK-PPARα-BDNF-TrkB signaling and highlight AdipoR2 as a promising target for depression therapy under chronic stress. Show less
Obesity is closely associated with cognitive dysfunction, and markedly increases the risk of developing neurodegenerative diseases. Currently, obesity-related cognitive impairment lacks effective ther Show more
Obesity is closely associated with cognitive dysfunction, and markedly increases the risk of developing neurodegenerative diseases. Currently, obesity-related cognitive impairment lacks effective therapeutic interventions. Shenling Baizhu Powder (SLBZ) is a classical formula used to strengthen the spleen and promote the ascent of clear qi in traditional Chinese medicine (TCM). According to the TCM, this formula has great potential for the treatment of obesity-related cognitive impairment. However, research on SLBZ has focused primarily on its gastrointestinal effects, leaving its neurocognitive mechanisms largely unexplored. This study aimed to elucidate the therapeutic mechanisms of SLBZ in obesity-related cognitive impairment. Obese mice were obtained by subjecting male mice to a 16-week high-fat diet (HFD, 60 kcal % fat). During the final four weeks of the study, a SLBZ decoction (10 and 20 g/kg/day) was administered orally. The mice were then subjected to two behavioral tests and a glucose tolerance test. To evaluate the therapeutic effects of HFD on metabolic dysregulation, neuroinflammation, and intestinal barrier impairment, a range of analytical techniques, including biochemical analysis, immunofluorescence, RT-qPCR, and Western blotting, were used. Subsequently, 16S rRNA gene sequencing and metabolomic profiling were used to detect changes in the gut microbes and metabolite levels. Finally, fecal microbiota transplantation was performed to assess the functional link between SLBZ remodeling of the gut microbiota, metabolic alterations, and hippocampal cognitive function. Our study demonstrated that HFD-fed mice developed significant cognitive impairment, supporting the notion that obesity adversely affects cognitive function. In the Morris water maze and open-field tests, SLBZ administration effectively ameliorated HFD-induced cognitive dysfunction. This improvement was accompanied by the restoration of the hippocampal synaptic ultrastructure and the recovery of the key synaptic proteins BDNF and PSD95. In agreement with this, SLBZ suppressed microglial activation and associated neuroinflammatory responses in HFD-fed mice. In the colon, SLBZ administration markedly alleviated HFD-induced gut barrier impairment, as evidenced by increased colonic mucus thickness and elevated expression of tight junction proteins, ZO-1, Occludin, and Claudin-1. Furthermore, SLBZ reduced endotoxin translocation and downregulated the expression of pro-inflammatory cytokines TNF-α, IL-1β, and IL-6. Notably, HFD-induced gut microbiota dysbiosis was remodeled by the SLBZ treatment, which was characterized by an increased capacity for microbial vitamin B6 synthesis. SLBZ increased the serum levels of vitamin B6 in HFD-fed mice. Intriguingly, fecal microbiota transplantation from SLBZ-treated HFD-fed mice facilitated the amelioration of cognitive deficits, including superior performance in behavioral tests and synaptic repair in the hippocampus compared to recipients of HFD-microbiota. Our findings highlight that SLBZ is a promising therapeutic agent mitigating obesity-related cognitive impairment via the "gut microbiota-vitamin B6-neuroprotection" axis. Show less
With the rapid progression of global population aging, the incidence of cognitive dysfunction-related disorders is steadily increasing. In recent years, growing attention has been directed toward the Show more
With the rapid progression of global population aging, the incidence of cognitive dysfunction-related disorders is steadily increasing. In recent years, growing attention has been directed toward the interaction between the gut microbiota and the central nervous system (CNS). The gut-brain axis (GBA), as a bidirectional communication pathway, plays an increasingly recognized role in regulating cognitive functions. Ganoderma lucidum polysaccharides (GLP), a traditional medicinal and edible substance, can regulate gut microbiota homeostasis and short-chain fatty acid (SCFAs) levels through the GBA. GLP reduces the Firmicutes/Bacteroidetes ratio, significantly increases the abundance of Lactobacillus, and further suppresses oxidative stress and inflammatory responses by controlling microglial overactivation and neuroinflammation, thereby enhancing the expression of synapse-associated proteins and brain-derived neurotrophic factor (BDNF). Consequently, GLP shows potential for improving cognitive dysfunction. This review systematically summarizes the bioactivities of GLP, explores the neurodegenerative mechanisms of aging, and proposes the possibility that GLP mitigates aging-induced inflammation and improves cognitive function via modulation of the gut microbiota. Show less
Ambient air pollution aggravates cardiovascular-kidney-metabolic (CKM) disorders and sarcopenia, yet the shared genetic and epigenetic mechanisms that underlie their frequent co-occurrence remain poor Show more
Ambient air pollution aggravates cardiovascular-kidney-metabolic (CKM) disorders and sarcopenia, yet the shared genetic and epigenetic mechanisms that underlie their frequent co-occurrence remain poorly understood. We integrated genome-wide association study (GWAS) data for CKM components (cardiovascular disease [CVD], chronic kidney disease [CKD], metabolic syndrome), CKM-related cardiovascular events, and sarcopenia diagnostic criteria from European-ancestry cohorts, and conducted meta-analyses harmonizing each phenotype across at least three studies. We employed Mendelian Randomization (MR) to assess potential causal links and genetic correlation analyses (global and local) to quantify shared heritability. Multi-omics analyses included two sequential phases: Phase 1 identified and validated novel shared CKM-sarcopenia genes through integrated methylation (n = 1980) and expression (n = 31,684) analyses, followed by cross-validation using two complementary transcriptome-wide association studies (TWAS). Phase 2 prioritized druggable targets through proteomic analysis across five independent cohorts (deCODE, n = 35,559; UK Biobank Pharma Proteomics Project (UKB-PPP), n = 54,219; Fenland, n = 10,708; FinnGen Olink, n = 619; FinnGen Somascan, n = 828) and integrated colocalization. MR suggested genetically predicted associations between sarcopenia and CKM; genetically slower walking pace was associated with higher CVD risk (OR = 0.85, P = 9.56 × 10 Ambient air pollution likely promotes CKM-sarcopenia comorbidity chiefly via inflammatory signaling and epigenetic modifications. Our multi-omics integration reveals convergent pathways, candidate driver genes, and differential methylation sites that link these conditions. We propose these targets for environmental mitigation and molecular intervention, which require validation in diverse populations. Show less
This study aims to elucidate the role of Enterococcusin the progression from inflammatory bowel disease to colorectal cancer (CRC), with a focus on identifying key metabolites and host genes regulated Show more
This study aims to elucidate the role of Enterococcusin the progression from inflammatory bowel disease to colorectal cancer (CRC), with a focus on identifying key metabolites and host genes regulated by Enterococcusand their influence on CRC development. Using the database gutMGene, gutMDisorder and MACdb, we mined the key metabolites and human genes. We acquired the activated genes (panel 1) and inhibited genes (panel 2), and metabolite associated genes (MAGs, panel 3). Subsequent analyses included protein-protein interaction (PPI) network construction, functional enrichment, differential expression and survival analysis in CRC, and immune infiltration assessment. We screened 12 activated genes (Panel1: Show less
Ulcerative colitis (UC) is characterized by chronic colonic mucosal inflammation, with its pathogenesis involving multidimensional interactions and limitations in clinical treatment. Dietary restricti Show more
Ulcerative colitis (UC) is characterized by chronic colonic mucosal inflammation, with its pathogenesis involving multidimensional interactions and limitations in clinical treatment. Dietary restriction (DR) is a commonly used approach for UC patients to alleviate symptoms, and exploring the role of DR-related genes in UC could provide new directions for the development of precision therapies. Bioinformatics analysis was performed on UC-related datasets (GSE75214, GSE73661) obtained from the GEO database. Candidate genes were acquired by intersecting differentially expressed genes (DEGs) with dietary restriction-related genes (DRRGs). Subsequently, key genes were identified via machine learning algorithms and ROC curve analysis. A deep neural network (DNN) model and a diagnostic nomogram were constructed. In addition, gene set enrichment analysis (GSEA), gene set variation analysis (GSVA), immune infiltration analysis, and single-cell RNA sequencing (scRNA-seq) analysis were conducted. Finally, the expression of key genes was validated through experiments. CPT1A, ANGPTL4, and CLDN1 were identified as the key genes. The deep neural network (DNN) model achieved area under the curve (AUC) values of 0.914 and 0.933 in the two datasets, respectively; the diagnostic nomogram exhibited high predictive performance (AUC > 0.7), and decision curve analysis (DCA) revealed its potential clinical net benefit. Enrichment analyses demonstrated that the key genes were significantly enriched in dietary restriction (DR)-related pathways, including cytokine-receptor interaction, the IL2-STAT5 signaling pathway, and fatty acid metabolism. Thirty-two activated pathways and five inhibited pathways were detected in UC patients (e.g., the oxidative phosphorylation pathway was suppressed). Immune infiltration analysis identified 27 differentially infiltrating immune cell types. CLDN1 was localized to epithelial cells, ANGPTL4 to fibroblasts, and CPT1A to endothelial cells. Macrophages were identified as a signaling hub in UC, showing intensified crosstalk with stromal and vascular cells via pathways such as ACKR1. Experimental validation confirmed that ANGPTL4 and CLDN1 were highly expressed in UC, whereas CPT1A was lowly expressed, a pattern consistent with the expression trends observed in public database analyses. These results indicated that CPT1A, ANGPTL4, and CLDN1 are involved in the pathological regulation of UC by DR through modulating the metabolism-immune-barrier axis, providing novel biomarkers and potential intervention targets for the clinical diagnosis and targeted therapy of UC. Show less