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      Relationship between serum and synovial fluid CCL20 concentrations with disease severity in primary knee osteoarthritis

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          The current study was performed to examine serum and synovial fluid (SF) CCL20 levels and their correlations with disease severity in primary knee osteoarthritis patients.


          A total of 99 patients diagnosed with primary knee OA were enrolled in the study, and 95 healthy individuals receiving regular medical examination were recruited as controls. Serum and SF CCL20 concentrations were determined using an enzyme-linked immunosorbent assay. The radiographic severity of OA was assessed by the Kellgren-Lawrence (K-L) classification system. The Lequesne algofunctional index and a visual analogue scale (VAS) were used to evaluate the clinical severity of knee OA in patients.


          The serum CCL20 levels were not significantly different between patients with knee OA and controls. Patients with a K-L grade of 4 had significantly higher SF CCL20 levels than those with K-L grades of 2 and 3. Knee OA patients with a K-L grade of 3 showed significantly higher levels of CCL20 in SF than those with a K-L grade of 2. In addition, SF CCL20 levels were significantly related to the Lequesne algofunctional index and VAS score.


          These findings suggest that local CCL20 levels may reflect the disease severity of knee OA.

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          Most cited references 23

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          Risk factors for the incidence and progression of radiographic knee osteoarthritis.

          Preventive strategies against knee osteoarthritis (OA) require a knowledge of risk factors that influence the initiation of the disorder and its subsequent progression. This population-based longitudinal study was performed to address this issue. Ninety-nine men and 255 women aged > or =55 years had baseline interviews and weight-bearing knee radiographs in 1990-1991. Repeat radiographs were obtained in 1995-1996 (mean followup duration 5.1 years, median age at followup 75.8 years). Risk factors assessed at baseline were tested for their association with incident and progressive radiographic knee OA by logistic regression. Rates of incidence and progression were 2.5% and 3.6% per year, respectively. After adjusting for age and sex, the risk of incident radiographic knee OA was significantly increased among subjects with higher baseline body mass index (odds ratio [OR] 18.3, 95% confidence interval [95% CI] 5.1-65.1, highest versus lowest third), previous knee injury (OR 4.8, 95% CI 1.0-24.1), and a history of regular sports participation (OR 3.2, 95% CI 1.1-9.1). Knee pain at baseline (OR 2.4, 95% CI 0.7-8.0) and Heberden's nodes (OR 2.0, 95% CI 0.7-5.7) were weakly associated with progression. Analyses based on individual radiographic features (osteophyte formation and joint space narrowing) supported differences in risk factors for either feature. Most currently recognized risk factors for prevalent knee OA (obesity, knee injury, and physical activity) influence incidence more than radiographic progression. Furthermore, these factors might selectively influence osteophyte formation more than joint space narrowing. These findings are consistent with knee OA being initiated by joint injury, but with progression being a consequence of impaired intrinsic repair capacity.
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            Indexes of severity for osteoarthritis of the hip and knee. Validation--value in comparison with other assessment tests.

            The index for hip disease (ISH) was established, validated and appraised as a new assessment test for the trial of new drugs as well as for long-term follow-up of patients, and to help with future indications for surgery. The ISH deals with pain, maximum walking distance, and some activities of daily living. Inter-observer reproducibility is good (mean deviation 0.55 points; p less than 0.05). In a short-term, double-blind crossover trial, the ISH, judged according to its power to distinguish between the active drug period and the placebo period, appears as one of the best assessment tests. In the long term, total hip prosthesis is most often justified when the ISH score reaches 10-12 points. The index of severity for knee disease (ISK) was validated and appraised by the same statistical methods. Its value in non-steroidal anti-inflammatory drug (NSAID) or analgesic trials is lower than the value of the ISH. However, its use is still justified for that purpose, and for long-term follow-up of osteoarthritis of the knee.
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              Osteoarthritis Year in Review 2016: biomarkers (biochemical markers).

              The aim of this "Year in Review" article is to summarize and discuss the implications of biochemical marker related articles published between the Osteoarthritis Research Society International (OARSI) 2015 Congress in Seattle and the OARSI 2016 Congress in Amsterdam.

                Author and article information

                J Musculoskelet Neuronal Interact
                J Musculoskelet Neuronal Interact
                Journal of Musculoskeletal & Neuronal Interactions
                International Society of Musculoskeletal and Neuronal Interactions (Greece )
                : 19
                : 3
                : 326-332
                [1 ]Department of Orthopedic Surgery, Third Hospital of Shi Jiazhuang, Shi Jiazhuang, Hebei Province, China
                [2 ]Department of Orthopedic Surgery and Sports Medicine Center, First Affiliated Hospital of Jinan University, GuangZhou, Guang Dong Province, China
                [3 ]Department of Orthopedics, Handan Central Hospital, Handan Hebei Province, China
                Author notes
                Corresponding authors: Wei Xue, Department of Orthopedics, Handan Central Hospital, ZhongHua South Avenue No. 15, Handan, Hebei Province, China, 056000 E-mail: xueweiortho@ 123456hotmail.com
                Hua-Jun Wang, Department of Orthopedic Surgery and Sports Medicine Center, First Affiliated Hospital of Jinan University, GuangZhou, Guang Dong Province, China, 510632 E-mail: whj323@ 123456126.com
                Copyright: © Journal of Musculoskeletal and Neuronal Interactions

                This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 4.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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