Insights & Discussion
Green tea and its compounds, especially catechins, may potentially prevent and treat osteoarthritis due to their potent antioxidant and anti-inflammatory properties.
The researchers performed an extensive review exploring the potential impact of green tea and its bioactive compounds, chiefly catechins, on osteoarthritis management. Their focus was on the anti-inflammatory and antioxidant abilities of these compounds. Based on the review, such compounds can quell inflammation by blocking various signaling pathways interconnected with inflammatory processes. Specifically, they have the potential to suppress the expression of several cytokines and enzymes related to inflammation.
In addition, green tea was noted for its property to neutralize free radicals, thus averting the formation of harmful reactive oxygen species and countering oxidative stress. While many conventional, non-surgical osteoarthritis therapies can lead to numerous adverse effects, the current review suggests that green tea could serve as a safer alternative. It may be a promising direction in the prevention and management of this chronic, painful, and inflammatory condition, which touches a significant number of people globally.
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Green tea supplementation improves total antioxidant capacity and impacts oxidative stress based on dose levels in adults.
2021 Antioxidants Effect of Green Tea Supplementation on Antioxidant Status in Adults: A Systematic Review and Meta-Analysis of Randomized Clinical Trials Rasaei N, Asbaghi O, Samadi M, Setayesh L, Bagheri R, Gholami F, et al.
Systematic Review Antioxidant Green Tea Oxidative Stress
The research's methodology involved a systematic search of research materials published in English language up to 21 August 2021. Recognized online databases such as Scopus, PubMed, Embase, and ISI Web of Science were utilized with the appropriate keywords. The study focused on randomized controlled trials that evaluated green tea supplementation, and its relationship with malondialdehyde and total antioxidant capacity in adults. A random-effects model quantified the difference, and the researchers carried out meta-regression and non-linear dose-response analyses to investigate the association between the quantity of green tea consumed and the duration of the intervention.
The research analysed the results obtained from sixteen randomized controlled trials, which amount to seventeen study arms comprising a total of 760 participants. The study found that green tea supplementation did have significant effects on total antioxidant capacity, and these effects were chiefly linked to gender and body mass index. However, the results showed that these effects were not significant in cases of low-dose supplementation and obese individuals. On the other hand, no relationship was found between malondialdehyde and green tea supplementation in any subgroup. Nonetheless, meta-regression analyses indicated an inverse linear connection between the change in MDA and the dosage of green tea.
Green tea and its component EGCG, demonstrate potential as a treatment for endometriosis by inhibiting growth, invasion, adhesion and angiogenesis.
2021 Critical Reviews in Food Science and Nutrition Therapeutic effects of green tea on endometriosis Chen X, Man GCW, Hung SW, Zhang T, Fung LWY, Cheung CW, et al.
Review Article Anti-Inflammatory Antioxidant EGCG
The main research methodology of this work is a narrative review. The paper comprehensively collects and reviews various preclinical studies that propose the use of green tea as a potential treatment for endometriosis. These studies explore the diverse biological properties and activities of green tea and its major bioactive component, (-)-epigallocatechin gallate, including anti-angiogenic, anti-proliferation, anti-metastasis, and apoptosis induction functions. Different potential mechanisms used by green tea to inhibit the growth of endometriosis are considered, such as its effects on inflammation, oxidative stress, invasion, adhesion, and apoptosis.
The discussion of the reviewed data highlights the potential therapeutic effects of green tea acting on different molecular and cellular mechanisms in endometriosis. The researchers keenly discussed how green tea exhibited an inhibitory effect on the disease through multiple avenues, including reducing inflammation and oxidative stress, preventing tumor invasion and adhesion, promoting apoptosis (cell death), and limiting angiogenesis (the development of new blood vessels) - all these factors contribute to the growth and progression of endometriosis. The discussion elaborates on the significant roles and wider implications of these processes in understanding and potentially treating endometriosis.
Avocado/soy unsaponifiables effectively treat osteoarthritis by controlling the balance between oxidant and antioxidant molecular markers.
2021 Journal of Complementary and Integrative Medicine Avocado/soy unsaponifiables can redress the balance between serum antioxidant and oxidant levels in patients with osteoarthritis: a double-blind, randomized, placebo-controlled, cross-over study Jangravi Z, Basereh S, Zaree Mahmoudabadi A, Saberi M, Alishiri GH, Korani M
Randomised Controlled Trial Antioxidant Avocado Avocado Unsaponifiable
The methodology used in this study was a double-blind, randomized, placebo-controlled, cross-over trial. Forty osteoarthritis patients were classified into two groups: one received avocado/soy unsaponifiables (ASU) for three months followed by three months of placebo, and the other group received a placebo first for three months followed by three months of ASU. The patients' oxidant status was evaluated by measuring their serum malonldialdehyde (MDA). Other measures such as total antioxidant capacity, reduced glutathione, and antioxidant enzymes like superoxide dismutase and catalase were also assessed.
After three months of treatment, all patients who were given avocado/soy unsaponifiables exhibited a significant decrease in their serum MDA levels, indicating lower oxidative stress. In comparison, these levels were higher at baseline and after placebo treatment. Furthermore, the treatment with avocado/soy unsaponifiables resulted in positive changes in the patients' antioxidant levels. Analysis also showed that the effect of avocado/soy unsaponifiables was consistent, regardless of the sequence in which the medication was received. These findings demonstrate that avocado/soy unsaponifiables can contribute effectively to the treatment of osteoarthritis by regulating the balance between oxidant and antioxidant molecular markers.
Green tea polyphenols can potentially protect against neurodegenerative disorders like Parkinson's Disease through antioxidant, anti-inflammatory, and neuroprotective actions.
2020 Molecules Neuroprotective Properties of Green Tea (Camellia sinensis) in Parkinson’s Disease: A Review Malar DS, Prasanth MI, Brimson JM, Sharika R, Sivamaruthi BS, Chaiyasut C, et al.
Review Article Anti-Inflammatory Antioxidant Green Tea
The study synthesized existing research on the potential neuroprotective benefits of green tea polyphenols, particularly in Parkinson's disease. The papers highlighted were drawn from numerous sources and focused on the antioxidant, anti-inflammatory, and neuroprotective attributes of these compounds. Green tea's potential protection against free radicals, inflammation, and neuro-damage were considerable points of interest. The analysis also took into account the complex physiological, social, and cultural factors that could influence the effectiveness of green tea polyphenols in human subjects.
Through the evaluation of numerous in vivo studies, researchers came to intriguing conclusions about the overall mechanism of green tea. The studies assessed explored how green tea consumption could mitigate neurodegenerative disorders like Parkinson's. In these analyses, investigators refined their understanding of how green tea and its polyphenols function from a neuroprotective standpoint. This information helps us better understand the advantages of green tea consumption and its potential role in preventing neurodegeneration.