类风湿关节炎复合高血压疾病模型的建立及评价
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国家自然科学基金(81330081,81302784,81673444);安徽省自然科学基金(1508085MH182);安徽医科大学博士科研资助基金(XJ201534)。


Establishment and evaluation of a rat model of arthritis-hypertension disease
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    摘要:

    目的 建立类风湿关节炎复合高血压疾病(arthritis-hypertension disease,AHD)大鼠模型,并对该模型的特点进行评价。方法 实施外科手术用0.25 mm银夹缩窄大鼠左肾动脉建立高血压(hypertension,HT)模型,同时于大鼠左后足跖注射0.1 mL完全弗氏佐剂致炎建立AHD模型。无创血压测量分析系统测量尾动脉压。足爪容积测量仪测量大鼠非致炎侧关节肿胀度,并分析关节炎指数与炎症发生率。第35天处死大鼠,收集胸主动脉、踝关节及脾脏组织HE染色并进行病理学检查。结果 AHD模型大鼠关节明显肿胀,关节腔大量滑膜细胞增生、炎症细胞浸润、血管翳形成,脾脏生发中心数量增加、大量淋巴细胞浸润、白髓弥漫性增生、红髓浸润。关节炎指数、炎症发生率以及关节、脾脏组织病理评分较佐剂性关节炎(adjuvant arthritis,AA)大鼠明显升高;同时,AHD模型大鼠血压显著升高,胸主动脉中膜厚度、横截面积明显增加,管腔直径明显降低,且其血压值和血管损伤程度较HT大鼠明显升高或加重。结论 用完全弗氏佐剂足跖皮内注射法合并外科手术缩窄左肾动脉法可成功建立大鼠AHD模型。

    Abstract:

    Objective To establish and evaluate a rat model presenting symptoms of arthritis-hypertension disease (AHD). Methods A total of forty healthy 5-6 week-old male SD rats were used in this study. Hypertension was induced by constriction of the left renal artery by two kidney one clip (2K1C) with a 0.25 mm silver clamp, and AHD model was established by injecting 0.1 mL complete Freund adjuvant to the left hind paw. Tail artery pressure was measured with a non-invasive blood pressure measurement system. The degree of swelling in the non-inflammatory joint of rats was measured with a paw volume measuring instrument, the arthritis index and incidence of inflammation were evaluated. The rats were sacrificed on the 35th day. The thoracic aorta, ankle joint and spleen tissues were examined by pathology using HE staining. Results The joint of AHD model rat was significantly swollen, extensive synovial cell hyperplasia, inflammatory cell infiltration, vascular pannus formation, and bone and cartilage destruction. The number of germinal centers in spleen was increased, and a large number of lymphocyte infiltration, diffuse proliferation of white pulp, and red pulp infiltration were present. The arthritis index, incidence of inflammation and histopathological scores of the joint and spleen were significantly higher than adjuvant arthritis (AA) rats; meanwhile, the blood pressure of AHD model rat was significantly increased, the thickness and cross-sectional area of thoracic aorta were significantly increased, while the lumen diameter was significantly reduced. The blood pressure and vascular injury were significantly increased or aggravated compared with the HT rats. Conclusions A rat model of arthritis-hypertension disease is successfully established by using complete Freund adjuvant intradermal injection to the footpad and surgery to narrow the left renal artery.

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张影,周月,严尚学,魏伟.类风湿关节炎复合高血压疾病模型的建立及评价[J].中国比较医学杂志,2017,27(8):34~39.

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  • 收稿日期:2016-12-08
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  • 在线发布日期: 2017-08-31
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