Insights & Discussion
Xiang Fu, a traditional Chinese herbal medicine, shows significant antidepressant effects.
The study reviewed the major antidepressant mechanisms and clinical applications of Cyperi Rhizoma, known as CR. It aimed to evaluate the pharmacological effects and the chemical compositions associated with these effects. The authors underwent an extensive literature search using "Cyperus rotundus L." as the search term across multiple electronic databases including Web of Science, ScienceDirect, and PubMed.
In discussing the results, the researchers found that CR has broad application in alleviating symptoms related to stagnation of Qi, such as issues with the liver, stomach, and bowels, common in different countries. They identified the effective constituents of CR, including Aqueous extract, EtOH extract, essential oil, total oligomeric flavonoids, and five other extracts. These exhibited various pharmacological activities, such as antibacterial, antioxidant, neuroprotective, antihemolytic, and anti-inflammatory effects. Notably, specific components like α-cyperone and nootkatone showed antidepressant effects. Through synthesizing this scientific information, they concluded that CR holds potential as a herbal medicine to develop antidepressant drugs with fewer side effects.
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Pumpkin seeds are recognised for their medicinal, nutritional, and cosmetic benefits, including anti-diabetic, heart disease prevention, anti-cancer, and antioxidant qualities.
2024 The Natural Products Journal Pumpkin Seeds (Cucurbita spp.) as a Nutraceutical Used In Various Lifestyle Disorders Wal A, Singh MR, Gupta A, Rathore S, Rout RR, Wal P
Review Article Anti-Parasite Anticancer Antioxidant
The review article undertakes a comprehensive exploration of the nutraceutical importance of pumpkin seeds. The methodology includes an examination of the various known substances in the seeds, such as phytoestrogens, unsaturated fatty acids, and vitamin E. The study then delves into the different benefits and therapeutic uses of these components stretching from medicinal to nutritional to cosmetic applications.
The results of this research are diverse and impressive, with implications for several major health sectors. Their potential anti-diabetic and hypoglycemic properties could suggest a significant role in the management and prevention of diabetes. Meanwhile, the seeds' potential in cardiovascular disease prevention could help to address one of the most pressing global health issues. Moreover, potential anti-cancer properties imply that these seeds could even have a part to play in cancer prevention. The review also described potential additional qualities, such as antidepressant, anti-helminthic (parasite-removing), and antioxidant effects.
Pumpkin seeds have been shown to provide neuropharmacological benefits such as reducing anxiety and depression, and improving memory.
2023 Behavioural Neurology Cucurbita maxima Seeds Reduce Anxiety and Depression and Improve Memory Wahid S, Alqahtani A, Khan RA
Animal Study Depression Pumpkin Seed
The study evaluated the effects of pumpkin seeds on four areas - anxiety, depression, memory, and motor coordination. Anxiety was tested using models like light and dark apparatus, elevated plus maze, head dip, and open field test, while depression was assessed by the forced swim test and tail suspension test. Memory and learning abilities were gauged through the passive avoidance test, stationary rod apparatus, and Morris's water maze test. The effect on motor skilled learning was assessed by stationary rod and rotarod apparatus. Finally, the levels of brain biogenic amines were determined using reversed phase high-pressure liquid chromatography.
In the results evaluation, it was found that pumpkin seeds exhibit properties that help reduce anxiety and alleviate depression, while also enhancing memory. However, they showed no significant effects on motor coordination. An elevated level of norepinephrine was observed, possibly contributing to its antidepressant effects. Furthermore, a reduction in the weight of the animal was observed after chronic administration. These benefits are probably due to the seeds' secondary metabolites like cucurbitacin, beta-sitosterol, polyphenolic compounds, citrulline, kaempferol, arginine, beta-carotene, quercetin, and other antioxidants.
Vitamin D deficiency could accelerate depressive symptoms and suicide risks, and vitamin D supplementation may mitigate these effects.
2023 Nutrients Vitamin D in Depression: A Potential Bioactive Agent to Reduce Suicide and Suicide Attempt Risk Somoza-Moncada MM, Turrubiates-Hernández FJ, Muñoz-Valle JF, Gutiérrez-Brito JA, Díaz-Pérez SA, Aguayo-Arelis A, et al.
Review Article Depression Suicide
The paper examines the links between vitamin D deficiency, depression, and suicide from various studies. It hypothesizes that vitamin D could enhance serotonin synthesis and modulate proinflammatory cytokines, both factors in depression and suicide. The paper reviews this hypothesis in the context of the broader health issue of suicide, which is among the leading causes of death worldwide.
This paper then discusses the potential benefits of vitamin D supplementation. Drawing upon indirect evidence suggesting that vitamin D deficiencies may be a risk factor for depression—one of the most common factors in suicide attempts—the paper postulates that vitamin D supplementation could play a role in helping to reduce the risk of depression and thus suicide. The beneficial mechanisms of vitamin D, such as enhancing serotonin synthesis and modulating proinflammatory cytokines, which are associated with depression and suicide, stand as the central contributing factors in this hypothesis.
Long-term consumption of green tea can potentially lessen the risk of depression in postmenopausal women by decreasing inflammation and boosting estradiol levels.
2023 Nutrients Long-Term Consumption of Green Tea Can Reduce the Degree of Depression in Postmenopausal Women by Increasing Estradiol Wan Z, Qin X, Tian Y, Ouyang F, Wang G, Wan Q
Cohort Study Anti-Inflammatory Depression Green Tea
In the study, researchers performed an analysis on a tea-producing village, incorporating 386 postmenopausal women in the investigation, who participated either as green tea consumers or non-drinkers (control group). The level of estradiol, inflammation markers, sleep quality, and depression symptoms were measured to uncover any correlations.
The results reflected significant disparities between the tea-drinking and control groups in terms of depression and insomnia levels, BMI, inflammation levels, and estradiol quantities. By appraising these outcomes, it was found that green tea intake could quell the likelihood of depression via its impact on sleep, inflammation, and estradiol levels. The risk of depression was consequently seen as reduced among postmenopausal women engaging in regular consumption of green tea.
Fermented Pueraria lobata root extract and Glycine max extract showed estrogen-like activities, reducing depressive symptoms in menopausal mice but not increasing female cancer risks.
2023 Journal of Functional Foods Effects of Pueraria lobata root and Glycine max (L.) Merrill extracts fermented with Lactiplantibacillus plantarum on the depressive-like behavior in ovariectomized mice via upregulation of hippocampal BDNF Ha J, Jang HM, Choi I
Animal Study Bacillus Depression Ge Gen
The researchers focused on Pueraria lobata roots and Glycine max (also known as soybeans) extracts, which are rich in isoflavones but often limited in practical use due to their high molecular weight and low bioavailability. The researchers chose to ferment these extracts with Lactiplantibacillus plantarum strains which are known to convert glycosides to aglycones, potentially enhancing the beneficial effects of the isoflavones. Specifically, the study was conducted using ovariectomized mice.
The research found that both fermented Pueraria lobata root extract and Glycine max extract exhibited estrogen-like activities. More intriguingly, the fermentation process increased the expression of estrogen receptor beta, suggesting that these extracts may not increase the risk of various female cancers—a common side effect of hormone replacement therapy—as was previously believed. Also, the ingestion of these extracts not only increased the estrogen receptor beta in the mice but also upregulated the expression of the brain-derived neurotrophic factor in the hippocampal region of the brain, thus improving depressive symptoms. The highest expression was observed in the group given a mixture of both extracts.
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