This study focuses to investigate the pharmacological activities, botanical sources, and biopharmaceutical profile of the phytochemical fraxin based on different preclinical and non-clinical studies to show the scientific evidence and to evaluate the underlying molecular mechanisms of the therapeutic effects against various ailments. For this, data was searched and collected (as of February 15, 2024) in a variety of credible electronic databases, including PubMed/Medline, Scopus, Springer Link, ScienceDirect, Wiley Online, Web of Science, and Google Scholar. The findings demonstrated favorable outcomes in relation to a range of diseases or medical conditions, including inflammation, neurodegenerative disorders such as cerebral ischemia-reperfusion (I/R) and depression, viral infection, as well as diabetic nephropathy. The phytochemical also showed protective effects such as osteoprotective, renoprotective, pulmoprotective, hepatoprotective, and gastroprotective effects due to its antioxidant capacity. Fraxin has a great capability to diminish oxidative stress-related damage in different organs by stimulating the antioxidant enzymes, downregulating nuclear factor kappa B and NLRP3, and triggering the Nrf2/ARE signaling pathways. Fraxin exhibited poor oral bioavailability beacuses of reduced absorption and a wide distribution into tissues of different organs.

Pharmacological Activities of Plant-Derived Fraxin with Molecular Mechanisms: A Comprehensive Review.

Oxytocin (OT) is considered beneficial to mental health owing to its anxiolytic, prosocial, and anti-stress effects; however, the adverse effects of OT have been controversial, such as its potentia...

Oxytocin-induced anxiogenic behavior in juvenile male rats

Toll‐like receptor 4 (TLR4) is considered to be involved in the pathogenesis and progression of atopic dermatitis (AD). In the present study, we evaluated the relationship between TLR4 gene polymorphisms and the susceptibility or severity of AD among Chinese Han children.

https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/jcla.24385

TLR4 polymorphisms as potential predictors of atopic dermatitis in Chinese Han children

In the present study, we examined the effect of cold-water swimming stress (CWSS) on plasma corticosterone levels. Mice were exposed to stress in 4°C for 3 mins. Plasma corticosterone (CORT) level was measured at 0, 15, and 30 min after stress stimulation. The plasma CORT level was gradually increased up to 30 min. Then we further examined the changes of several signaling molecules expression levels, such as p-ERK, p-JNK, p-P38, p-AMPKα1, p-AMPKα2, and p-mTOR, in the HPA axis. We observed that those signaling molecules were altered after stress in the HPA axis. p-ERK, p-JNK, p-P38, and p-mTOR proteins expression were reduced by CWSS in the HPA axis. However, the phosphorylation of AMPKα1 and AMPKα2 were activated after CWSS in the HPA axis. Our results suggest that the upregulation of plasma CORT level induced by CWSS may be modulated by the those signaling molecules.

https://www.tandfonline.com/doi/pdf/10.1080/19768354.2021.1890211

Modulation of corticosterone and changes of signal molecules in the HPA axis after cold water swimming stress

Abstract A significant decrease in estrogen levels puts menopausal women at high risk for major depression, which remains difficult to cure despite its relatively clear etiology. With the discovery of abnormally elevated inflammation in menopausal depressed women, immune imbalance has become a novel focus in the study of menopausal depression. In this paper, we examined the characteristics and possible mechanisms of immune imbalance caused by decreased estrogen levels during menopause and found that estrogen deficiency disrupted immune homeostasis, especially the levels of inflammatory cytokines through the ERα/ERβ/GPER-associated NLRP3/NF-κB signaling pathways. We also analyzed the destruction of the blood-brain barrier, dysfunction of neurotransmitters, blockade of BDNF synthesis, and attenuation of neuroplasticity caused by inflammatory cytokine activity, and investigated estrogen-immuno-neuromodulation disorders in menopausal depression. Current research suggests that drugs targeting inflammatory cytokines and NLRP3/NF-κB signaling molecules are promising for restoring homeostasis of the estrogen-immuno-neuromodulation system and may play a positive role in the intervention and treatment of menopausal depression. 

pdf/estrogen-immuno-neuromodulation-disorders-in-menopausal-2la78bxt23.pdf

Estrogen-immuno-neuromodulation disorders in menopausal depression

Acer tegmentosum (ATM) has antioxidant and anti-adipogenic activity. However, few studies have investigated the pharmacological activity or mechanism of ATM as an antidepressant agent. We assessed ...

https://www.tandfonline.com/doi/pdf/10.1080/19768354.2020.1808063

Antidepressant effect and neural mechanism of Acer tegmentosum in repeated stress–induced ovariectomized female rats

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Antidepressant effect and neural mechanism of Acer tegmentosum in repeated stress–induced ovariectomized female rats