Kyle J. Norton
Green tea may have a therapeutic and positive effect in reduced risk and progression and treatment of arthritis, some scientists suggested.
Arthritis is a class of chronic conditions characterized by painful inflammation and stiffness of the joints, usually seen in adults over the age of 65.
Others symptoms of arthritis also include redness, warmth, swelling, and decreased motion of the affected joints.
Rheumatoid Arthritis in severe cases can also affect bone density, cause skin nodules, eye,...... and lung inflammation and scarring.
As of today. there is no cure for the disease. Depending on the type of arthritis, analgesics and Nonsteroidal anti-inflammatory drugs (NSAIDs) are common use for the treatment of pain and inflammation. However, in rheumatoid arthritis medicine, disease-modifying antirheumatic drugs (DMARDs) and Corticosteroids are the first line of medicine used to suppress the active immune system that attacks its own joints.
Most arthritis is caused by wear and tear of the joints. However, long-term infection or injury without proper treatment can elevate the natural breakdown of cartilage tissue of the joints.
According to CDC(5), in the years of 2013–2015, approximately 22.7% or 54.4 million are affected by the disease, with significantly higher age-adjusted prevalence in women (23.5%) than in men (18.1%).
Although arthritis prevalence increases with age, physical inactivity is associated with a higher risk of arthritis development.
Sadly, the CDC continued, "With the aging of the US population, the prevalence of doctor-diagnosed arthritis is expected to increase in the coming decades. By the year 2040, an estimated 78.4 million".
Green tea is a precious drink that processed a number of health benefits known to almost everyone in Asia and the Western world.
According to the College of Pharmacy, green tea epigallocatechin 3-gallate (EGCG) in preclinical studies displayed a significant effect in the treatment of arthritic disease.
In vitro, application of green tea extract EGCG demonstrated activities in cartilage-preserving and chondroprotective action through reduced expression of proinflammatory IL-1β, TNFα, and IL-6
and modulated extracellular matrix (ECM) turnover induced changes in the biomechanical environment of chondrocytes and accelerate the degradation of cartilage as well as driving the progression of the disease in the presence of inflammation.
Normal extracellular matrix (ECM) is composed of collagen type II with a function to provide tensile support for the tissue.
Further analysis in the expression of proinflamatory factors researchers found that the over expression of proinflammatory cytokines IL-1 and IL-6 were associated correlatively in knee joints in arthritis and inhibition of IL-1 snd IL-6 by green tea EGCG IL-1 showed to reduce joint damage.
Some researchers also suggested that Interleukin 1 (IL-1) is a crucial mediator of the inflammatory response, playing an important part in the body's natural responses and the development of pathological conditions leading to chronic inflammation.
In an expression of tumor necrosis factor (TNF), tumor necrosis factor alpha(TNFα, cachexin, or cachectin), application of green tea inhibited the levels of TNFα in the induction of synovial fibroblast cytotoxicity.
Interestingly, in the study to evaluate the possible effects of the administration of green tea extract on the oxidative state of the liver and brain of adjuvant-induced arthritic rats, researchers indicated that green tea daily doses of 250 mg kg(-1) (59.8 mg catechins per kg) for 23 days displays a strong effect in decreased symptoms of arthritis by ameliorated diminutions in protein and lipid damage in liver, brain and plasma, through antioxidant effect in reduced levels of ROS in stimulated free radical chain reaction to initiate production of pro inflammatory cytokines in precipitated chronic diseases.
Rats treated with green tea EGCG also showed a significant improvement in restored natural antioxidant glutathione (GSH) and protein thiol levels produced by the body, by exhibiting the activities of the antioxidant enzymes.
Moreover, green tea injection also normalized the activity of glucose 6-phosphate dehydrogenase, which is increased in the liver of arthritic patients and considered as a risk factor for the development of arthritis. Increased activity glucose 6-phosphate dehydrogenase was associated to reactive oxygen species (ROS) generated in oxidative metabolism in inflicted damage on all classes of macromolecules.
Additional differentiation of green tea EGCG immunomodulatory effects and mechanisms on experimental arthritis induced by collagen-induced arthritis (CIA) mice compared to control received phosphate buffered saline (PBS), researchers found that application of green tea EGCG at dose of 10 mg/kg demonstrated a strong effect in ameliorated clinical symptoms and reduced histological scores, through modulated the immune activity by induced overexpression of the Nrf-2 antioxidant pathway, a major mechanism in the cellular defense against oxidative or electrophilic stress through detoxication and elimination.
EGCG also ameliorated experimental arthritis in mice by eliciting indoleamine-2,3-dioxygenase (IDO) through inhibition of pro-inflammatory cytokine interferon-gamma, astrocytes and microglia in facilitated production of dendritic cells (DCs) that activate the immune system to attack the dendritic cell located on the surface on the joint tissue.
Application of the EGCG also increased frequencies of T regs with a dominant role in the suppression of autoimmune pathology.
Some researchers suggested that increased Treg number and/or function in model systems may have a significant effect in both prevented and reversed arthritis disease.
Taken together, green tea with abundant bioactive polyphenol epigallocatechin 3-gallate (EGCG) may be considered as a functional food for alleviated symptoms, reduced risk, and progression and treatment of arthritis.
However, further data collection on large example size and multi centers studies performed with human consumption of the green tea and its bioactive polyphenol epigallocatechin 3-gallate (EGCG), during the course of the disease will be necessary to complete the picture of their anti arthritis possibilities.
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Kyle J. Norton, Master of Nutrition
Health article writer and researcher; Over 10.000 articles and research papers have been written and published online, including worldwide health, ezine articles, article base, healthblogs, selfgrowth, best before it's news, the Karate GB Daily, etc.,.
Named TOP 50 MEDICAL ESSAYS FOR ARTISTS & AUTHORS TO READ by Disilgold.com Named 50 of the best health Tweeters Canada - Huffington Post
Nominated for shorty award over last 4 years
Some articles have been used as references in medical research, such as the international journal Pharma and Bio Science, ISSN 0975-6299.
Sources
(1) Green tea extract improves the oxidative state of the liver and brain in rats with adjuvant-induced arthritis by de Almeida Gonçalves G1, de Sá-Nakanishi AB, Wendt MM, Comar JF, Bersani Amado CA, Bracht A, Peralta RM. (PubMed)
(2) Green Tea Epigallocatechin-3-Gallate Suppresses Autoimmune Arthritis Through Indoleamine-2,3-Dioxygenase Expressing Dendritic Cells and the Nuclear Factor, Erythroid 2-Like 2 Antioxidant Pathway by Min SY1, Yan M1, Kim SB2, Ravikumar S1,3, Kwon SR1,4, Vanarsa K1,3, Kim HY4, Davis LS#1, Mohan C(PubMed)
(3) Green tea polyphenol epigallocatechin 3-gallate in arthritis: progress and promise by Ahmed S1.(PubMed)
(4) Is IL-1 a good therapeutic target in the treatment of arthritis? by Burger D1, Dayer JM, Palmer G, Gabay C.(PubMed)
(5) National Statistics by CDC
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