膝关节骨性关节炎血液和滑液MMP-3 水平与其病变程度的相关性

目的探讨膝关节骨关节炎（osteoarthritis’OA)患者血液和滑液MMP-3水平与其病变严重程度的关系。方法随机选取33例膝关节0A患者[男20例,女13例;年龄55?87岁,平均（65. 8 ±6. 8)岁]和15名健康对照者[男9例,女6例;年龄53?83岁,平均（62. 3 ± 7. 2)岁]作为研究对象。采用Kellgren-Lawrence标准进行放射学分级,酶联免疫吸附法（ELISA)测定关节血液和滑液MMP-3 水平。结果0A患者与对照者相比,关节血液MMP-3水平（178. 61 ±83. 82) ： (73. 26 ±21.51)ng/ml 和滑液MMP-3水平（5612.31 ± 3013.93)： (782. 63 ±426. 22)ng/ml均明显升高。关节血液和滑液 MMP-3水平均与0A病变严重程度（KL分级）呈正相关卜=0. 627,P<0. 001;r=0. 55,P =0.001)。关节血液MMP-3水平与滑液MMP-3水平呈正相关（r =0. 509,P =0. 002)。结论0A患者血液和滑 液MMP-3水平都与病变严重程度相关。因此,MMP-3在0A的病理过程中起关键作用,并且可以作 为0A病变严重程度的生物标记。     

骨关节炎患者滑液中COMP水平与病情严重程度的相关性研究

背景：软骨寡聚基质蛋白（cartilage oligomeric matrix protein,COMP）是软骨中非胶原蛋白的主要成分,软骨的损伤、修复和代谢变化均可能影响COMP的表达水平。目的：研究骨关节炎（osteoarthritis,OA）患者关节滑液中COMP水平与病变严重程度的相关性,探讨注射玻璃酸钠对关节滑液中COMP的影响。方法：52例膝关节0A患者接受关节内注射玻璃酸钠治疗,治疗前、治疗后6个月行X线片检查,按Kellgren放射学诊断标准评级,记录治疗前和治疗开始后5周、6个月时患者膝关节的WOMAC评分。采用ELISA方法测定在接受透明质酸钠治疗前、治疗开始后5周关节液中的COMP水平。19例因半月板或韧带损伤接受关节镜手术的患者作为正常对照组。结果：OA组患者滑液中COMP水平明显高于对照组,有统计学差异（P=0．036）。OA组患者滑液中COMP水平与OA严重程度（WOMAC评分）呈正相关（P=0．001）,与影像学Kellgren分级标准无相关性（P=0．12）。结论：滑液中COMP水平与OA病变严重程度呈正相关,测定OA患者血中COMP水平对进一步研究OA发病机理、早期发现并采取有效防治策略及监测防治效果具有极其重要的意义。     

骨关节炎患者血清及关节液中白细胞介素-17表达及其意义

目的检测膝骨关节炎(osteoarthritis,OA)患者血清及关节液中自细胞介素-17(interleukin-17)的表达并评估其与OA严重程度的相关性。方法收集100例原发性膝OA患者血清及关节液标本,并以50例健康志愿者血清标本作为对照。OA严重程度及分级分别采用Lequesne指数和K-L分级系统。酶联免疫吸附法分别检测血清及关节液中IL-17浓度,并分析其与OA严重程度的相关性。结果 OA组患者血清中IL-17浓度[(5.292±1.470)pg/ml]明显高于对照组[(4.173±0.640)pg/ml],差异有统计学意义(P0.05)。K-L4级或3级OA患者关节液IL-17的浓度明显高于2级OA患者,差异有统计学意义(P0.05)。4级OA患者关节液IL-17的浓度[(6.161±1.120)pg/ml]明显高于3级OA患者[(4.474±0.816)pg/ml],差异有统计学意义(PO.05)。关节液IL-17浓度与Lequesne指数呈正相关(r=0.6232,P0.05);血清IL-17浓度与Lequesne指数之间无明显相关。结论 IL-17在OA患者血清及关节液中的表达明显升高,关节液中IL-17的水平与OA严重程度之间明显相关,提示IL-17的失衡表达在OA的发病机制中具有一定作用。     

瘀血阻滞型膝骨性关节炎与其关节镜下病理改变及细胞因子相关性

目的:探讨瘀血阻滞型膝骨性关节炎与细胞因子及关节镜下病理改变之间的相关性,为中医临床诊治提供客观量化指标。方法:2009年2月至2010年3月膝骨性关节炎住院患者90例,男17例,女73例;年龄40～70岁,平均57.2岁;病程1个月～10年,平均3.4年;左膝31例,右膝59例。对纳入病例行中医辨证,选择瘀血阻滞型患者,术前均有膝关节固定刺痛、晨僵,大部分有交锁现象,均无关节肿胀。术前采集关节液,ELISA法测定细胞因子白细胞介素1β(IL1β)、转化生长因子β1(TGFβ1)的含量,同时在关节镜下观察关节内病理改变。综合以上资料探讨瘀血阻滞型膝骨性关节炎病变程度,同时对不同类型关节镜下病理改变与细胞因子水平进行相关性分析。结果:关节液IL1β和TGFβ1水平分别为(28.18±5.57)pg/ml和(51.69±6.56)pg/ml。Ⅲ～Ⅳ度软骨退变组IL1β水平为(30.65±3.48)pg/ml,高于Ⅰ～Ⅱ度软骨退变组的(20.55±3.50)pg/ml;Ⅰ～Ⅱ度软骨退变组TGFβ1水平为(58.18±3.98)pg/ml,高于Ⅲ～Ⅳ度软骨退变组的(49.59±5.83)pg/ml,差异有统计学意义(P0.01);IL1β与软骨退变呈正相关,r=0.744,TGFβ1与软骨退变呈负相关,r=-0.563。Ⅱ～Ⅲ度滑膜增生组IL1β水平为(33.48±2.95)pg/ml,高于Ⅰ度滑膜增生组的(25.40±4.50)pg/ml,差异有统计学意义(P0.01);IL1β与滑膜增生呈正相关,r=0.801。Ⅰ级骨赘增生组IL1β水平为(34.18±2.69)pg/ml,高于0级骨赘增生组的(25.74±4.48)pg/ml;0级骨赘增生组TGFβ1水平为(53.11±6.78)pg/ml,高于Ⅰ级骨赘增生组的(48.21±4.47)pg/ml,差异有统计学意义(P0.01);IL1β与骨赘增生呈正相关,r=0.762;TGFβ1与骨赘增生呈负相关,r=-0.340。结论:瘀血阻滞型膝骨性关节炎患者存在关节软骨退变、滑膜增生等病理改变,IL1β水平对软骨退变、滑膜增生和骨赘增生程度的估计有重要参考价值。     

关节液YKL-40水平与骨关节炎的相关性研究

[目的]探讨膝骨关节炎患者关节液中YKL-40水平与膝关节病变程度的相关性,为关节炎的早期诊断提供新的思路和临床依据。[方法]114例骨关节炎患者,WOMAC评分系统评估患者临床症状程度,X线K-L分级方法评估影像改变程度。抽取患膝关节滑液,采用双抗夹心酶联免疫吸附法检测关节滑液中YKL-40的水平。采用秩相关分析的多元相关分析YKL-40水平与骨性关节炎程度的相关性。[结果]不同K-L分期组滑液YKL-40水平差异有统计学意义,Ⅳ级患者高于Ⅲ级患者,Ⅲ高于Ⅱ级患者(P<0.05),秩相关分析显示,滑液SYKL-40水平与患者X线K-L分级呈正相关(r=0.542,P<0.001)。此外,秩相关分析显示,滑液YKL-40水平与WOMAC疼痛(r=0.517,P=0.001)、肢体功能(r=0.380,P=0.025)以及总分(r=0.407,P=0.010)呈正相关,但与WOMAC关节僵硬评分无明显相关性(r=0.093,P=0.133)。多元相关分析进一步证实,滑液YKL-40水平与WOMAC疼痛、肢体功能评分评分及总分呈正相关(P<0.05)。[结论]膝骨关节炎患者关节液YKL-40水平与骨关节炎严重程度的相关性,可作为一种潜在的评估膝骨关节炎症状严重性的生物标记物。     

血清和关节液中钙结合蛋白（S100A12)的水平与膝关节骨关节炎严重程度的相关性分析

目的探讨患者关节液和血清中钙结合蛋白(S100A12)浓度和膝关节骨性关节炎严重程度相关性,以评估它在骨性关节炎(osteoarthritis,OA)发病中的作用。方法 40例骨性关节炎(OA组)与40例需关节镜手术的半月板、韧带损伤的患者及行髓内钉固定的股骨及胫骨骨折患者(对照组);对两组患者静脉采血及取关节液,采用ELISA法测S100A12含量;采用Kellgren-Lawrence(K-L)标准对膝关节X线片进行评估分级。结果 OA组的血清中S100A12水平(35.10±26.43)ng/ml显著高于对照组含量(22.13±15.67)ng/ml,有统计学差异(P=0.026);OA组关节液S100A12含量(14.09±8.08)ng/ml显著高于对照组关节液中的含量(9.30±6.85)ng/ml(P=0.02)。OA组血清中的S100A12水平显著高于关节滑液中的水平(P0.01)。关节液中的S100A12含量和血液中的S100A12水平显著正相关(r=0.42,P=0.02),但相关关系并不密切。OA组关节滑液中S100A12与K-L分级成正相关(r=0.65,P0.01)。血清中的S100A12与K-L分级关联不显著(r=0.29,P=0.24)。结论 S100A12在OA患者的血液及关节液中都有表达;关节液的S100A12表达与患者骨关节炎严重程度成正相关;检测关节液中的S100A12有助于骨性关节炎的早期诊断,提示病变严重程度,为临床治疗提供参考。     

膝关节液中生物学标记物Ⅱ型胶原羧基端端肽的检测及临床意义

目的探讨膝关节液中Ⅱ型胶原羧基端端肽（CTX-Ⅱ）含量与关节软骨损伤和滑膜炎两种病变程度的关系。方法采用ELISA法对膝关节骨性关节炎37例患者（骨性关节炎组，即OA组）、膝关节其他疾病34例患者（非OA组）关节液中CTX-Ⅱ含量进行检测，并在关节镜下利用Outerbridge软骨损伤评分法和Ayral滑膜炎评分法对软骨损伤程度和滑膜炎程度进行评价。结果OA组关节液中CTX-Ⅱ含量高于非OA组（t=-7．558，P〈0．05）；Outerbridge软骨损伤累计评分≥10分组关节液CTX-Ⅱ的含量高于Outerbridge软骨损伤累计评分〈10分组（t=-7．235，P〈0．05）；Ayral滑膜炎评分≥60分组关节液CTX-Ⅱ的含量高于Ayral滑膜炎评分〈60分组（t=-5．113，P〈0．05）；71例膝关节疾病患者CTX-Ⅱ含量除主要与Outerbridge软骨损伤累计评分呈正相关外（r=0.743，P〈0．05），还与Ayral滑膜炎评分呈正相关（r=0．706，P〈0．05）；OA组中Out—erbridge软骨损伤累计评分与Ayral滑膜炎评分呈正相关（r=0．418，P〈0．05）；OA组中CTX-Ⅱ含量与Outerbridge软骨损伤累计评分（r=0．533，P〈0．05）和Ayral滑膜炎评分均呈正相关（r=0．522，P〈0．05）。结论膝关节液中CTX-Ⅱ的含量除主要反映关节软骨损伤累计程度外，在一定程度上还反映关节滑膜炎程度；膝关节液CTX-Ⅱ含量升高提示软骨损伤程度较重。     

膝关节骨关节炎滑液和软骨骨桥蛋白水平与其病变程度的相关性

Objective To examine osteopontin (OPN) levels in both synovial fluid and articular cartilage of patients with primary knee osteoarthritis (OA) and to investigate their relationship with severity of the disease. Methods Fifty patients with knee OA and 10 healthy controls were enrolled in this study.There were 15 males and 35 females with an average age of 61.8±7.4 years in OA group. The control group included 4 males and 6 females with an average age of 63.2±6.0 years. Mankin score were taken to determine the disease severity of the affected knee. The radiographic grading of OA in the knee was performed using the Kellgren-Lawrence criteria. OPN levels in synovial fluid were measured using enzyme-linked immunosorbent assay. OPN levels in articular cartilage were assessed by immunohistochemical methods. Results Compared to healthy controls, the knee OA patients had higher OPN concentration in synovial fluid ([4519.60±1830.37] pg/ml vs. [1179.70±303.39] pg/ml) and articular cartilage([0.60±0.06] vs. [0.43 ±0.07]). In addition, synovial fluid OPN levels showed a positive correlation with articular cartilage OPN levels (r=0.411,P=0.003). Subsequent analysis showed that the OPN levels in synovial fluid significantly had been correlated with severity of disease using Kellgren-Lawrence criteria (r=0.581, P＜ 0.001). Furthermore,the levels of OPN in the articular cartilage also were correlated with disease severity using Mankin score (r=0.675, P＜ 0.001).Conclusion The data suggest that OPN in synovial fluid and articular cartilage is related to progressive joint damage and could be a predictive biomarker respect to disease severity and progression in knee OA.     

膝关节骨关节炎滑液和软骨骨桥蛋白水平与其病变程度的相关性

Objective To examine osteopontin (OPN) levels in both synovial fluid and articular cartilage of patients with primary knee osteoarthritis (OA) and to investigate their relationship with severity of the disease. Methods Fifty patients with knee OA and 10 healthy controls were enrolled in this study.There were 15 males and 35 females with an average age of 61.8±7.4 years in OA group. The control group included 4 males and 6 females with an average age of 63.2±6.0 years. Mankin score were taken to determine the disease severity of the affected knee. The radiographic grading of OA in the knee was performed using the Kellgren-Lawrence criteria. OPN levels in synovial fluid were measured using enzyme-linked immunosorbent assay. OPN levels in articular cartilage were assessed by immunohistochemical methods. Results Compared to healthy controls, the knee OA patients had higher OPN concentration in synovial fluid ([4519.60±1830.37] pg/ml vs. [1179.70±303.39] pg/ml) and articular cartilage([0.60±0.06] vs. [0.43 ±0.07]). In addition, synovial fluid OPN levels showed a positive correlation with articular cartilage OPN levels (r=0.411,P=0.003). Subsequent analysis showed that the OPN levels in synovial fluid significantly had been correlated with severity of disease using Kellgren-Lawrence criteria (r=0.581, P＜ 0.001). Furthermore,the levels of OPN in the articular cartilage also were correlated with disease severity using Mankin score (r=0.675, P＜ 0.001).Conclusion The data suggest that OPN in synovial fluid and articular cartilage is related to progressive joint damage and could be a predictive biomarker respect to disease severity and progression in knee OA.     

血清抗缪勒管激素在梗阻性和非梗阻性无精子症鉴别诊断中的应用价值

目的:通过测定正常生育男性、梗阻性无精子症(OA)患者、非梗阻性无精子症(NOA)患者血清抗缪勒管激素(AMH)水平,探讨其是否作为血清标志物鉴别诊断OA和NOA。方法:选择2018年9月至2019年4月男性不育门诊就诊的患者作为研究对象,采用化学发光免疫法测定正常生育组(n=43)、OA组(n=14)、NOA组(n=45)患者血清中的AMH、抑制素B、FSH水平,经阴囊B超测量睾丸体积。并对正常生育组、OA组和NOA组均进行AMH、抑制素B、FSH、睾丸体积的统计分析。结果:AMH正常生育组[(8.13±3.95) ng/ml]和OA组[(8.51±4.77) ng/ml]均明显高于NOA组[(5.65±3.13) ng/ml,P0.05],抑制素B正常生育组[(127.38±40.50) pg/ml]和OA组[(131.25±52.30) pg/ml]均明显高于NOA组[(25.98±16.29)pg/ml,P0.01],FSH正常生育组[(4.22±3.23) IU/L]和OA组[(4.54±2.09) IU/L]均明显低于NOA组[(19.87±13.09)IU/L,P0.01];正常生育组与OA组AMH、抑制素B、FSH差异无统计学意义(P0.05)。Pearson相关分析结果显示,抑制素B与AMH呈正相关(r=0.326,P=0.01),与FSH呈负相关(r=-0.662,P0.01);FSH与AMH呈负相关(r=-0.468,P0.01);睾丸体积与AMH呈正相关(r=0.339,P0.01),与抑制素B呈正相关(P0.01,r=0.733),与FSH呈负相关(P0.01,r=0.597);精子浓度与抑制素B呈正相关(r=0.522,P0.01),与FSH呈负相关(r=-0.421,P0.01),与睾丸体积呈正相关性(r=0.605,P0.01)。结论:AMH可作为睾丸精子发生的血清标志物之一,并单独或与抑制素B和FSH三者联合用于OA和NOA的鉴别诊断。     

关节液中脂联素水平与膝关节骨关节炎严重程度的相关性研究

背景：众所周知,肥胖是引起骨关节炎发生、发展的危险因素之一。肥胖人群容易发生关节炎的原因是超载作用和代谢因素。脂肪组织是一个活跃的器官,它的分泌脂肪细胞因子包括脂联素进入全身循环,参与了骨关节炎的发病。 目的：测量骨关节炎患者血清和关节滑液中脂联素水平,分析其与膝关节骨关节炎严重程度的相关性。 方法：64例膝关节骨关节炎患者（关节炎组）和19例因半月板或韧带损伤患者（对照组,行关节镜检查后排除软骨损伤）被纳入本研究。采用Kellgren-Lawrence（KL）标准对关节炎患者的膝关节前后位X线片进行评估分级。使用酶联免疫吸附试验检测脂联素在对照组和关节炎组患者血清和关节滑液中的表达水平。使用WOMAC量表（Western On-tario and McMaster Universities Arthritis Index）评估患者膝关节功能。 结果：骨关节炎组患者血清中的脂联素水平[（6177.8±991.0）ng/ml]高于对照组[（5793.4±673.3）ng/ml],但差异无统计学意义（P=0.12）。但在骨关节炎组患者,血清中的脂联素浓度[（6177.8±991.0）ng/ml]显著高于关节滑液中的脂联素[（824.3±304.7）ng/ml,P〈0.001）。关节炎患者关节液中脂联素浓度与评估疾病的严重程度呈负相关（r=-0.51,P〈0.001）,但血清脂联素浓度与疾病的严重程度关联不显著（r=-0.17,P=0.18）。血清脂联素水平、滑膜液脂联素水平与MOMAC疼痛评分均不显著相关（r=-0.01和r=-0.13,P＞0.05）。 结论：骨关节炎患者滑膜液中脂联素水平与膝关节炎严重程度呈负相关。检测关节滑液中的脂联素可能有助于早期发现关节炎。     

Relationship of plasma and synovial fluid BMP-7 with disease severity in knee osteoarthritis patients: a pilot study

The objective of this study was to investigate bone morphogenetic protein-7 (BMP-7) levels in both plasma and synovial fluid of patients with primary knee osteoarthritis (OA) and to determine their relationship to disease severity. Thirty-two patients with knee OA and 15 healthy subjects were enrolled in the study. Anteroposterior knee radiographs were taken to determine the disease severity of the affected knee. The radiographic grading of OA in the knee was performed using the Kellgren-Lawrence criteria. BMP-7 levels in the plasma and synovial fluid were measured using enzyme-linked immunosorbent assay. The mean plasma BMP-7 concentration of the knee OA patients was significantly higher compared with that of healthy controls (12.1 ± 1.6 vs 3.5 ± 0.9 pg/ml, P = 0.001). Although BMP-7 levels in plasma were higher with respect to paired synovial fluid samples, the difference was not statistically significant (12.1 ± 1.6 vs 10.5 ± 2.2 pg/ml, P = 0.3). Subsequent analysis showed that plasma BMP-7 levels significantly correlated with disease severity (r = 0.77, P < 0.001). Furthermore, the synovial fluid levels of BMP-7 also correlated with disease severity (r = 0.60, P < 0.001). In addition, plasma BMP-7 levels showed a positive correlation with synovial fluid BMP-7 levels (r = 0.71, P < 0.001). Overexpression of BMP-7 in plasma and synovial fluid is related to progressive joint damage in knee OA. These findings suggest that BMP-7 might serve as a biochemical parameter for determining disease severity in primary knee OA and could play a potential role in cartilage protection and repair of OA.     

女性骨关节炎患者关节液visfatin水平与CTX-Ⅱ的相关分析

目的研究女性骨关节炎患者关节液visfatin水平与CTX-Ⅱ的相关分析。方法利用ELISA方法测定30例OA患者及12例对照组血浆和关节液visfatin及CTX-Ⅱ水平。结果 OA患者关节液visfatin浓度明显高于对照组（8.95±2.51ng/ml vs 4.48±2.49ng/ml,P〈0.001）,两组血浆visfatin浓度无统计学意义（5.37±1.45ng/ml vs 4.93±1.4ng/ml,P=0.466）。关节液visfatin水平与Ⅱ型胶原降解产物CTX-Ⅱ呈正相关（r=0.497,P〈0.01）,与hsCRP无相关（r=-0.246,P=0.19）。K-LⅣ级OA患者关节液visfatin浓度明显高于K-LⅢ级visfatin浓度（10.57±2.49ng/ml vs 7.54±1.5ng/ml,P〈0.01）。关节液visfatin水平明显与OA严重程度正相关（r=0.421,P=0.021）。结论 Visfatin可能通过关节腔局部作用参与OA关节软骨降解通路。     

Aggrecan and Cartilage Oligomeric Matrix Protein in Serum and Synovial Fluid of Patients with Knee Osteoarthritis

Aggrecan and cartilage oligomeric matrix protein (COMP) which are important degradation products of articular cartilage may be promising diagnostic markers in serum and/or synovial fluid for diagnosis of knee osteoarthritis (OA). Our objective was to measure serum and synovial fluid levels of aggrecan and COMP in patients with OA of the knee joint to find out if they could be of diagnostic value in OA and if their levels correlate with the clinical and radiological manifestations of the disease. Sixty-six patients suffering from primary knee OA with effusion (26 males and 40 females) were studied. Twenty individuals (six males and 14 females) with recent traumatic knee effusion matched for age and sex were chosen to serve as a control group. All subjects had thorough clinical and radiological (X-ray and MRI) evaluation. Aggrecan and COMP in serum and synovial fluid were measured by ELISA. Serum and synovial fluid aggrecan and COMP levels were significantly higher than the control. Serum and synovial fluid aggrecan and COMP levels were positively correlated with age, body mass index, disease duration, plain X-ray and MRI scores. In OA, serum and synovial fluid aggrecan and COMP levels are elevated and represent useful markers in the diagnosis. Moreover, these elevated levels positively correlated with radiological joint damage but not with clinical disease parameters. These markers have the potential to be used for monitoring articular cartilage destruction and response to different therapeutic modalities.     

Relationship of plasma and synovial fluid vascular endothelial growth factor with radiographic severity in primary knee osteoarthritis

Purpose

Recent evidence suggests that angiogenesis and inflammation contribute to the development and progression of osteoarthritis (OA). The purpose of this study was to investigate vascular endothelial growth factor (VEGF) levels in plasma and synovial fluid of patients with knee OA and to determine the relationship of VEGF levels with disease severity in knee OA.

Methods

A total of 100 subjects were enrolled in this study (80 knee OA patients and 20 healthy controls). Plasma and synovial fluid VEGF levels were analysed using enzyme-linked immunosorbent assay. VEGF expressions in synovial membrane and articular cartilage samples were assessed using immunohistochemistry.

Results

VEGF level in synovial fluid of knee OA patients was tenfold higher than that in paired plasma (P < 0.001). Both plasma and synovial fluid VEGF exhibited a positive correlation with radiographic severity (r = 0.454 and r = 0.727, P < 0.001, respectively). VEGF expression was highly detectable in synovial lining cells and articular chondrocytes of knee OA patients.

Conclusions

VEGF levels in both plasma and synovial fluid were positively correlated with the severity of knee OA. Therefore, VEGF may be useful for monitoring OA severity and could play a substantial role in the development and progression of knee OA.     

Matrix metalloproteinases and inhibitor in knee synovial fluid as cartilage biomarkers in rabbits: the effect of high-intensity jumping exercise

OBJECTIVE: To study the cartilage injury of knee joint in a rabbit model under high-intensity jumping training and to investigate if levels of matrix metalloproteinase-1 (MMP-1), matrix metalloproteinase-3 (MMP-3), and tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) in synovial fluid (SF) can be used to predict early sports injury of articular cartilage effectively. MATERIALS AND METHODS: Forty New Zealand white rabbits were divided into two groups randomly: untreated control group (CTRL, n = 8) and jumping training group (TG, n = 32). Concentrations of MMP-1, MMP-3, and TIMP-1 in SF were measured by ELISA assays at 4 and 8 weeks, respectively. Rabbits were euthanized at 4 and 8 weeks, and knee joints were taken out to be examined histologically. Sulfated glycosaminoglycan (GAG) content, thickness of cartilage and subchondral bone, dead cell ratio, and Mankin grades were measured. RESULTS: At 4 weeks, sulfated GAG content, thickness of subchondral bone, and Mankin grades in TG were significantly higher than control. After 8 weeks, the TG cohort had a further increase in the articular cartilage injury. SF levels of MMP-3, TIMP-1, and MMP-3/TIMP-1 in TG were significantly higher than control, and the level of these biomarkers was significantly associated with the severity of the articular cartilage pathology. CONCLUSIONS: Repetitive and high-intensity jumping movement may induce sports injury in the knee joint cartilage. MMP-1, MMP-3, TIMP-1, and MMP-3/TIMP-1 in the SF may accurately predict the severity and pathological characteristic of the joint cartilage injury.     

关节滑液3B3表位检测对软骨早期退变的诊断价值

[目的]骨性关节炎、髌骨软化症病人膝关节滑液中3B3表位含量是否与软骨退变程度相关。[方法]作者改良了竞争性ELISA检测关节滑液3B3表位的方法。抽吸71例膝骨关节炎、57例髌骨软化症病人及10例正常人志愿者的膝关节滑液，用该方法检测关节滑液中3B3表位含量，比较各组之间的差异。[结果]骨性关节炎组及髌骨软化组病人膝关节滑液中3B3表位均比正常人对照明显升高（P〈0．05），而且骨关节炎Ⅱ级关节软骨退变时关节滑液中3B3表位含量明显比Ⅳ级关节软骨退变增高（P〈0．01），而髌骨软骨软化患者Ⅱ、Ⅲ、Ⅳ级软骨退变各组间无明显差异（P〉0．05）。[结论]检测关节滑液中3B3表位含量具有诊断关节软骨退变的价值，尤其适用于骨性关节炎软骨早期退变（Ⅱ级）的诊断。     

髋关节骨关节炎与股骨颈骨折患者滑液对去分化软骨细胞VEGF表达的影响

目的 研究髋关节骨关节炎(osteoarthritis,OA)及股骨颈骨折(femoral neck fracture,FNF)患者软骨细胞血管内皮生长因子(vascular endothelial growth factor,VEGF)表达,同时对比分析OA滑膜液及创伤后滑膜液对去分化软骨细胞分泌VEGF的影响,从而探索炎性因子致去分化软骨细胞异常的VEGF表达变化.方法 取12例髋关节OA与8例FNF患者的软骨进行HE和番红O-固绿染色后行Mankin评分.将OA组及FNF组软骨组织分别粉碎后富集软骨细胞进行单层培养,取细胞换液时遗弃的上清液作为检测标本,以cathepsin B作为检测OA组软骨细胞去分化程度的指标,并且动态检测VEGF水平,并各培养基于传代培养时分别加入OA滑膜液、DMEM及创伤后滑膜液以观察其对软骨细胞VEGF分泌的影响.数据统计分析使用SPSS 11.0统计软件.结果 OA组软骨Mankin评分明显较骨折组升高,随着培养时间延长软骨细胞逐渐丧失其原有细胞形态并伴显著的cathepsin B上调和VEGF下凋;OA滑膜液可促使软骨细胞特别是OA组软骨细胞上调分泌VEGF,但刺激所产生的VEGF较原代培养初期明显减少,而FNF滑膜液对VEGF上调影响不大.结论 OA软骨损害Mankin评分与原代培养初期VEGF成正相关;软骨细胞体外原代培养后迅速表现为去分化特性;OA较FNF滑膜液可以促使软骨细胞特别是OA组细胞表达更多的VEGF,提示OA滑膜液参与病程进展,并且OA组软骨细胞病理表型更倾向于表达较多VEGF;而FNF滑膜液则相对有利于维持软骨细胞的原有表型.     

晚期膝关节骨关节炎患者滑液中肿瘤坏死因α及其可溶性受体水平与WOMAC评分的相关性分析

目的测量晚期膝关节骨关节炎（Osteoarthritis,OA）患者滑液中肿瘤坏死因子α（tumor necrosis factor-α,TNF-α）及其可溶性受体sTNFRⅠ、sTNFRⅡ的水平,评估它们与患者临床WOMAC评分之间的相关性。方法按美国风湿病学会诊断标准纳入需行人工全膝置换的晚期膝关节OA患者50例58膝,利用酶联免疫吸附试验（ELISA）测定受试者滑液中TNFα及sTNFRⅠ、sTNFRⅡ的水平,并按加拿大西安大略和麦克玛斯特大学OA指数（WOMAC）作整体临床评估。采用Pearson相关性分析方法对细胞因子水平或比率与WOMAC评分进行相关性分析。结果OA患者滑液中TNF-α浓度平均为3．214-2．17pg／ml,sTNFRⅠ浓度平均为5791±1737pg／ml,sTNFRⅡ浓度平均为4334±2583pg／ml,sTNFRⅠ／TNF-α的比值平均为2369±1444,sTNFRⅡ／TNF-α的比值平均为1653±1022,（sTNFRⅠ＋sTNFRⅡ）／TNF-α的比值平均为4092±2443。这三种细胞因子水平或比率与患者WOMAC评分中疼痛、僵硬指标不存在相关性,sTNFRI、sTNFR11与WOMAC评分中功能指标有一定相关性（P=0．032,0．014）。结论本组研究发现TNFα及其可溶性受体与WOMAC评分的疼痛、僵硬指标不存在相关性,与WOMAC评分的功能指标有一定相关性,提示目前TNF-α阻滞疗法应主要用于早期OA的治疗,对晚期OA患者难以获得较好的疗效。