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1.
J Pain Res ; 13: 1109-1119, 2020.
Article in English | MEDLINE | ID: mdl-32606898

ABSTRACT

PURPOSE: To investigate the effects of Mytilus edulis water extract (MWE) on an anterior cruciate ligament transection and a partial medial meniscectomy surgery to induced osteoarthritis (OA) with the high-fat diet (HFD)-induced obese rats. METHODS: The male Sprague-Dawley rats were fed with HFD for 4 weeks before surgery. The OA rats were orally administered with MWE (108.5, 217.0, and 542.5 mg/kg) for 6 weeks. RESULTS: The administration of MWE affected weight loss, triglycerides content, and total cholesterol level. MWE also enhanced the activity of superoxide dismutase and decreased lipid peroxidation degree. Moreover, MWE reduced proinflammatory cytokines level, alleviated inflammation and swelling of the osteoarthritic knee, and reduced loss of proteoglycan in articular cartilage tissue. CONCLUSION: MWE suppressed proinflammatory mediators and attenuated the cartilage degradation and pain in osteoarthritis rats under obesity condition. Therefore, MWE has the potential to act as an alternative for osteoarthritis treatment.

2.
Nutrients ; 11(6)2019 Jun 11.
Article in English | MEDLINE | ID: mdl-31212619

ABSTRACT

Osteoarthritis (OA), also called degenerative joint disease, is characterized by joint cartilage loss and is strongly linked to obesity. Medicine to alleviate pain is currently the only treatment. Shiikuwasha extract (SE) has been reported to possess valuable bioactive substances exhibiting anti-inflammatory, antiobesity, and anticancer effects. Research is limited to the use of SE in the treatment of OA and obesity. We performed both anterior cruciate ligament transections and medial meniscectomies to induce OA on Sprague-Dawley rats after 11 weeks of a high fat diet followed by 9 weeks of oral SE administration (300, 600, and 1500 mg/kg). This study showed that SE treatment could reduce weight gain and joint pain. Additionally, SE significantly decreased triglycerides and total cholesterol in plasma of the S1500 group but increased high-density lipoprotein cholesterol in the plasma of the S600 group. Meanwhile, plasma levels of tumor necrosis factor alpha (TNF-α) was significantly reduced in the S1500 groups. Histopathological findings confirmed administration of SE attenuated cartilage degeneration. Immunohistochemistry examination demonstrated that caspase 3 and phospho-Janus kinase 2 (p-JAK2) expression levels on chondrocytes were downregulated by SE treatment. Our findings demonstrate that SE can alleviate OA progression by improving obesity.


Subject(s)
Anterior Cruciate Ligament Injuries/drug therapy , Anti-Inflammatory Agents/pharmacology , Dietary Supplements , Osteoarthritis/drug therapy , Plant Extracts/pharmacology , Animals , Anterior Cruciate Ligament Injuries/etiology , Cartilage, Articular/drug effects , Cholesterol/blood , Chondrocytes/drug effects , Diet, High-Fat , Disease Models, Animal , Disease Progression , Obesity/blood , Obesity/complications , Osteoarthritis/etiology , Rats , Rats, Sprague-Dawley , Triglycerides/blood , Tumor Necrosis Factor-alpha/blood , Weight Gain/drug effects
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