Insights & Discussion
Green tea catechins potentially contribute to maintaining joint and skeletal muscle health, mitigating symptoms of osteoarthritis and sarcopenia.
The research begins by providing an understanding of osteoarthritis, a degenerative inflammatory disorder of articular cartilage, and sarcopenia, a condition characterized by loss of muscle mass and strength. It explores their prevalence, causes such as excessive inflammation and oxidative stress, mitochondrial dysfunction, and diminished autophagy. It then delves into the role of green tea catechins in joint health, including their influence on inflammatory signaling agents, anabolic mediators, and miRNAs expression.
This leads to a decrease in chondrocyte death and collagen degradation, thereby offering cartilage protection. The investigation also examines the effects of green tea catechins on skeletal muscle health. It highlights their role in maintaining an equilibrium between protein synthesis and degradation, and enhancing the synthesis of mitochondrial energy metabolism.
The review thus suggests a positive impact of green tea catechins on joint and muscle health, helping to maintain favorable muscle homeostasis and reduce muscle atrophy associated with aging. It ends by pointing out the limitations of the current study and proposing future research directions.
Discover Related Insights
Daily consumption of decaffeinated green tea catechins may enhance working memory.
2020 Molecules Effect of Daily Intake of Green Tea Catechins on Cognitive Function in Middle-Aged and Older Subjects: A Randomized, Placebo-Controlled Study Baba Y, Inagaki S, Nakagawa S, Kaneko T, Kobayashi M, Takihara T
Randomised Controlled Trial Cognitive Function Green Tea Green Tea Catechin
The study incorporated a double-blind, randomized, controlled approach to determine the effects of 336.4 mg of decaffeinated green tea catechins on cognitive function. It targeted Japanese adults, aged 50 to 69 years, exhibiting a Mini-Mental State Examination Japanese version score of over 24 and who self-identified as having cognitive decline. The experiment comprised administering a substance and then examining the cognitive function post a single dosage as well as following 12 weeks of everyday consumption. The Cognitrax testing battery was utilized to assess cognitive function.
In the results, it was observed that the incorrect response rate on the Continuous Performance Test significantly fell after a single dosage of green tea catechins. After 12 weeks of regular intake, the response duration for the two-back test in Part 4 of the 4-part Continuous Performance Test reduced, indicating potential improvement in working memory. The data suggests that consuming green tea catechins daily may potentially lead to cognitive enhancements, particularly in working memory.
Catechins in green tea potentially counteract osteoporosis by negatively affecting bone loss processes and enhancing bone formation processes.
2020 Antioxidants Osteoprotective Roles of Green Tea Catechins Huang HT, Cheng TL, Lin SY, Ho CJ, Chyu JY, Yang RS, et al.
Review Article Bone Formation Green Tea Green Tea Catechin
The research paper explores the role of catechins, a key compound found in green tea, in combating osteoporosis. In an endeavour to understand the cellular processes, the research focuses on the two critical processes involved in the onset of osteoporosis: osteoblastogenesis, the process of bone formation, and osteoclastogenesis, the process of bone resorption. Specifically, the research emphasizes that inflammation and high reactive oxygen levels enhance osteoclastogenesis while concurrently reducing osteoblastogenesis. Green tea catechins, which have strong antioxidant and anti-inflammatory properties, are assumed to rebalance these two processes.
The discussions revolve around the potential of green tea catechins to curb osteoclastogenesis by increasing the rate of osteoclast apoptosis, hampering osteoclastogenesis, and impeding bone resorption in a controlled environment. This is achieved directly through interactions with pre-osteoclasts/osteoclasts or indirectly through regulation of pre-osteoclasts via mesenchymal stem cells (MSCs) or stromal cells. Furthermore, catechins are credited with boosting osteoblastogenesis by enhancing the osteogenic differentiation of MSCs and improving osteoblastic survival, proliferation, differentiation, and mineralization. The paper verifies the positive in-vitro effects of catechins on osteogenesis through various animal models and human observational studies.
Green tea and its compounds, especially catechins, may potentially prevent and treat osteoarthritis due to their potent antioxidant and anti-inflammatory properties.
2020 Longhua Chinese Medicine The possible role of green tea on osteoarthritis: a narrative report Barbalho SM, Goulart RA, Buglio DS, Araujo AC, Guiguer EL
Review Article Anti-Inflammatory Antioxidant Green Tea
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.
Catechin-rich green tea extract (GTE) exercised anti-inflammatory activities can be beneficial in managing Nonalcoholic fatty liver disease (NAFLD) by reducing liver injury and gut-derived endotoxins.
2020 The Journal of Nutritional Biochemistry Anti-inflammatory activities of green tea catechins along the gut–liver axis in nonalcoholic fatty liver disease: lessons learned from preclinical and human studies Hodges JK, Sasaki GY, Bruno RS
Review Article Anti-Inflammatory Green Tea Green Tea Catechin
The research is built around the study of the anti-inflammatory properties of catechin-rich green tea extract (GTE). The primary analytical interest is its effects on inflammatory responses that contribute to Nonalcoholic fatty liver disease (NAFLD), specifically nonalcoholic steatohepatitis (NASH). The extraction focuses on inhibiting the activation of the hepatic nuclear factor kappa-B, which is known to exacerbate liver injury.
The results have shown positive contributions of GTE to management of NAFLD. Itn was observed that the extract limits the activation of the hepatic nuclear factor kappa-B and in turn, reduces NASH-associated liver injury. Additionally, green tea extract was found to contain hepatic-level benefits that attenuate intracellular redox distress and pro-inflammatory signaling. It was also found to improve the gut barrier function, limit the translocation of gut-derived endotoxins, and exercise prebiotic and antimicrobial effects on the gut microbial ecosystem. These results can potentially contribute to managing NAFLD-associated morbidity.