Berberine prevents nitric oxide-induced rat chondrocyte apoptosis and cartilage degeneration in a rat osteoarthritis model via AMPK and p38 MAPK signaling

This study aimed to evaluate the chondroprotective effect and underlying mechanisms of BBR on sodium nitroprusside (SNP)-stimulated chondrocyte apoptosis and surgically-induced rat OA model. The in vitro results revealed that BBR suppressed SNP-stimulated chondrocyte apoptosis as well as cytoskeletal remodeling, down-regulated expressions of inducible nitric oxide synthase (iNOS) and caspase-3, and up-regulated Bcl-2/Bax ratio and Type II collagen (Col II) at protein levels, which were accompanied by increased adenosine monophosphate-activated protein kinase (AMPK) phosphorylation and decreased phosphorylation of p38 mitogen-activated protein kinase (MAPK). Furthermore, the anti-apoptotic effect of BBR was blocked by AMPK inhibitor Compound C (CC) and adenosine-9-β-D-arabino-furanoside (Ara A), and enhanced by p38 MAPK inhibitor SB203580. In vivo experiment suggested that BBR ameliorated cartilage degeneration and exhibited an anti-apoptotic effect on articular cartilage in a rat OA model, as demonstrated by histological analyses, TUNEL assay and immunohistochemical analyses of caspase-3, Bcl-2 and Bax expressions. These findings suggest that BBR suppresses SNP-stimulated chondrocyte apoptosis and ameliorates cartilage degeneration via activating AMPK signaling and suppressing p38 MAPK activity.
Source: Apoptosis - Category: Molecular Biology Source Type: research

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Condition:   Erosive Osteoarthritis Intervention:   Drug: Alendronate Effervescent Oral Tablet Sponsors:   University Hospital, Ghent;   Amgen;   EffRx Pharmaceuticals Recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
Abstract Following total knee replacement (TKR), patients often persist in maladaptive motor behavior which they developed before surgery to cope with symptoms of osteoarthritis. An important challenge in physical therapy is to detect, recognize and change such undesired movement behavior. The goal of this study was to measure the differences in clinical status of patients pre-TKR and post-TKR and to investigate if differences in clinical status were accompanied by differences in the patients'' motor flexibility. Eleven TKR participants were measured twice: pre-TKR and post-TKR (twenty weeks after TKR). In order t...
Source: Human Movement Science - Category: Neurology Authors: Tags: Hum Mov Sci Source Type: research
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal).
Source: Osteoarthritis and Cartilage - Category: Rheumatology Authors: Source Type: research
Multiple epiphyseal dysplasia (MED) is a skeletal disorder characterized by delayed and irregular ossification of the epiphyses and early-onset osteoarthritis. At least 66% of the reported autosomal dominant M...
Source: BMC Medical Genetics - Category: Genetics & Stem Cells Authors: Tags: Research article Source Type: research
We commend the authors on their scientific work1. However, this information is not new, and adds little to the literature. It ’s time to stop referencing the AAOS 2013 Guidelines as the benchmark for the nonoperative management of knee OA. They were deeply methodologically flawed, and the lack of uptake demonstrates their poor clinical utility.
Source: The Journal of Arthroplasty - Category: Orthopaedics Authors: Source Type: research
Condition:   Osteoarthritis, Hip Intervention:   Other: Dry needling Sponsor:   Universidad de Zaragoza Active, not recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
Condition:   Osteoarthritis Intervention:   Device: Ultrasound Imaging Sponsor:   Western University, Canada Active, not recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
Condition:   Hand Osteoarthritis Interventions:   Other: Electroacupuncture;   Drug: Topical diclofenac sodium gel Sponsor:   Guang'anmen Hospital of China Academy of Chinese Medical Sciences Not yet recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
Rheumatoid arthritis (RA), a chronic systemic inflammatory disease, is a primary cause of disability worldwide. The involvement of fibroblast-like synoviocytes (FLSs) in the regulation of the pathogenesis of RA has been highlighted. Mesenchymal stem cells (MSCs) are important candidates for cell-based treatment in many inflammatory autoimmune diseases. Herein, we identify whether MSC-derived exosomes loaded with microRNA-320a (miR-320a) regulate RA-FLSs. Synovial tissues from 22 patients with RA and 9 patients with osteoarthritis were collected. RA-FLSs were obtained from patients with RA, and their functions were evaluate...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
ConclusionThere does not appear to be a difference in complication rates between the 2 groups. SS BLTKA seems to be a logical choice if both knees have severe osteoarthritis. Patients with severe cardiopulmonary compromise were excluded, and a unilateral procedure may be preferred in them.
Source: International Orthopaedics - Category: Orthopaedics Source Type: research
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