浮针再灌注联合中药热奄包治疗寒凝血瘀型痛经临床观察

目的:观察浮针再灌注联合中药热奄包治疗寒凝血瘀型痛经的临床疗效。方法:60例随机分为治疗组与对照组各30例,治疗组用浮针再灌注联合中药热奄包治疗,对照组口服布洛芬缓释胶囊治疗。结果:总有效率治疗组93.3%、对照组73.3%,两组比较差异有统计学意义(P<0.05)。两组痛经症状积分及VAS疼痛程度均低于治疗前(P<0.05),且治疗组低于对照组(P<0.05)。结论:浮针再灌注联合中药热奄包治疗寒凝血瘀型痛经疗效较好。     

膝关节色素沉着绒毛结节性滑膜炎患者的术后康复治疗

背景 :色 素 沉 着 绒 毛 结 节性 滑 膜 炎 ( pigm ented villonodular syn-ovitis,PV S )多 以 患 关 节 反 复 肿痛 为主 要 症状 ,术 后 遗 留 有 关 节肿胀 、粘 连等 并 发症 ,复 发 率也 较高 。目的 :探 讨术 后 早期 功 能锻 炼对 膝 关节 PV S 功 能 恢复 的 影 响。设 计 :以 患者 为 研 究 对 象的 病例 分 析。单 位 :一 所大 学 医 院 骨 科。对 象 : 1990-03/2004-06在 武 汉大 学 人 民 医 院 骨 科住 院治 疗的 膝 关 节 PV S 患者 18例。纳 入 标准 :手 术后 病 理结 果 显 示 滑 膜肥 厚 ,绒 毛结 节…     

热预处理对超负荷训练大鼠心肌蛋白激酶C表达的影响

目的观察热预处理(HP)对超负荷训练大鼠心肌蛋白激酶C(PKC)δ、PKCε表达的影响。方法 3月龄雄性Sprague-Dawley大鼠25只分为对照组(n=5)、训练组(n=10)和HP组(n=10)。超负荷训练8周后应用免疫组化法、Real-time PCR和Western blotting检测心肌组织PKCδ、PKCε表达。结果三种检测方法均显示,训练组大鼠心肌PKCδ表达较对照组和HP组增高(P0.05)。Real-time PCR与免疫组化检测结果显示,训练组PKCε表达低于对照组和HP组(P0.05);Western blotting结果显示三组PKCε表达无显著性差异(P0.05)。结论在热预处理心肌保护效应中,PKC可能发挥了重要的作用。     

Repair of sheep metatarsus defects by using tissue-engineering technique

Tissue-engineering bone with porous β-tricalcium phosphate (β-TCP) ceramic and autologous bone marrow mesenchymal stem cells (MSC) was constructed and the effect of this composite on healing of segmental bone defects was investigated. 10-15 ml bone marrow aspirates were harvested from the iliac crest of sheep, and enriched for MSC by density gradient centrifugation over a Percoll cushion (1.073g/ml). After cultured and proliferated, tissue-engineering bones were constructed with these cells seeded onto porous β-TCP, and then the constructs were implanted in 8 sheep left metatarsus defect (25 mm in length) as experimental group. Porous β-TCP only were implanted to bridge same size and position defects in 8 sheep as control group, and 25 mm segmental bone defects of left metatarsus were left empty in 4 sheep as blank group. Sheep were sacrificed on the 6th, 12th, and 24th week postoperatively and the implants samples were examined by radiograph, histology, and biomechanical test. The 4 sheep in blank group were sacrificed on the 24th week postoperatively. The results showed that new bone tissues were observed either radiographic or histologically at the defects of experimental group as early as 6th week postoperatively, but not in control group, and osteoid tissue, woven bone and lamellar bone occurred earlier than in control group in which the bone defects were repaired in “creep substitution” way, because of the new bone formed in direct manner without progression through a cartilaginous intermediate. At the 24th week, radiographs and biomechanical test revealed an almost complete repair of the defect of experimental group, only partly in control group. The bone defects in blank group were non-healing at the 24th week. It was concluded that engineering bones constructed with porous β-TCP and autologous MSC were capable of repairing segmental bone defects in sheep metatarsus beyond “creep substitution” way and making it healed earlier. Porous β-TCP being constituted with autologous MSC may be a good option in healing critical segmental bone defects in clinical practice and provide insight for future clinical repair of segmental defect.     

自体成肌细胞修复周围神经缺损

目的:观察自体成肌细胞在神经再生室中的作用,探讨其作为组织工程的种子细胞修复周围神经缺损的可行性。方法:实验于2002-08/2003-08在北京军事医学科学院基础医学研究所九室完成。①成年Wistar大鼠30只,采用随机数字法分成成肌细胞组、细胞外基质凝胶组和生理盐水组,每组10只。②切除大鼠右坐骨神经6mm,断端分别套入硅胶管,使神经两断端在硅胶管内相距13mm。③成肌细胞组:快速分离骨骼肌成肌细胞,差速贴壁法纯化、增殖,按1×109L-1细胞浓度与细胞外基质凝胶混合,植入神经再生室内;细胞外基质凝胶组:神经再生室内植入细胞外基质凝胶;生理盐水组:神经再生室内植入生理盐水。④术后4,8,12周进行大鼠坐骨神经功能指数测定;术后12周进行大体观察、电生理检测、腓肠肌湿重、神经组织学及超微结构观察。结果:30只大鼠全部进入结果分析。①结蛋白免疫组织化学:阳性细胞平均达98.01%。②大体观察:术后12周,成肌细胞组和细胞外基质凝胶组均可见再生神经,外形似正常神经,直径较正常的神经干细,成肌细胞组略粗于细胞外基质凝胶组。生理盐水组导管内无再生神经通过间隙。③坐骨神经功能指数:术后8,12周,成肌细胞组显著高于细胞外基质凝胶组(8周:-71.788±3.569,-76.986±2.266;12周:-61.847±2.914,-69.527±1.765;P均<0.01)。④电生理检查:术后12周,成肌细胞组的运动神经传导速度及波幅明显高于细胞外基质凝胶组,成肌细胞组、细胞外基质凝胶组腓肠肌肌电图呈部分失神经电位表现,生理盐水组则为完全失神经电位。⑤腓肠肌湿重恢复率:成肌细胞组明显好于细胞外基质凝胶组和生理盐水组。⑥组织学检查:术后12周,成肌细胞组、细胞外基质凝胶组的再生神经纤维排列整齐、密集,神经导管交界处无瘢痕,成肌细胞组的再生神经纤维多且直径较粗大,排列更为规则。⑦透射电镜观察:成肌细胞组和细胞外基质凝胶组均见再生的有髓神经纤维。⑧再生神经纤维图像分析:术后12周,在有髓神经纤维密度、神经纤维有效面积、有髓神经纤维数量、直径及髓鞘厚度等指标上成肌细胞组均优于细胞外基质凝胶组。结论:自体成肌细胞能够促进周围神经再生,可以作为种子细胞应用于外周神经组织工程。     

关节腔注射几丁糖对兔关节软骨退变的影响

目的观察关节腔注射几丁糖对兔关节软骨退变的影响。方法18只大白兔行右膝关节前交叉韧带切断术建立骨关节炎（OA）动物模型。术后将动物随机分为2组，每组9只，实验组行2％几丁糖0．3m1关节腔注射，每2周1次，对照组同一时间点给予生理盐水0．3m1关节腔注射。第8周处死动物，比较两组兔股骨髁关节软骨的大体改变，用生化方法测定软骨基质蛋白多糖的变化，并用免疫组化方法对比两组的基质金属蛋白酶-1（MMP-1）的表达情况。结果实验组动物软骨退变程度轻于对照组（P〈0．05），氨基葡聚糖总量明显高于对照组（P〈0．01），硫酸软骨素／硫酸角质素比值低于对照组（P〈0．05），MMP-1的表达亦明显低于对照组（P〈0．01）。结论几丁糖能预防0A软骨退变，具有软骨保护作用。     

膝关节色素沉着绒毛结节性滑膜炎患者的术后康复治疗

背景：色素沉着绒毛结节性滑膜炎(pigmented villonodular synovitis，PVS)多以患关节反复肿痛为主要症状，术后遗留有关节肿胀、粘连等并发症，复发率也较高。目的：探讨术后早期功能锻炼对膝关节PVS功能恢复的影响。设计：以患者为研究对象的病例分析。单位：一所大学医院骨科。     

Cbfa1基因调节骨形成与骨吸收的研究进展

骨的形成与吸收是一个涉及众多的基因和生长因子的复杂过程,凡可使骨形成下降和骨吸收增加的因素都会促进骨质疏松的发生.Cbfa1是成骨细胞分化和成熟的特异性转录因子,研究发现Cbfa1可通过促进骨形成和抑制骨吸收,对骨质疏松的发生、发展起到抑制作用,因此,我们期望随着Cbfa1基因研究的深入将为防治骨质疏松提供新思路.     

3D打印联合外固定支架治疗肱骨远端C型骨折的疗效比较

目的 分析传统内固定术、3D打印辅助内固定术、3D打印辅助内固定联合外固定支架对肱骨远端C型骨折(C2、C3)的治疗效果，为后期治疗肱骨远端C型骨折提供思路和依据。方法 回顾性研究作者医院骨科2016-01/2021-09月60例肱骨远端骨折手术患者的临床资料。根据手术方式不同将患者分为对照组(n=20)、3D打印组(n=20)和3D打印+外固定架组(n=20),比较3组患者手术时间、术中出血量、术中透视次数、术后引流量、切口中愈合时间、骨折愈合时间，术后肘关节功能，Mayo肘关节功能评分(Mayo elbow performance score, MEPS)及并发症(内固定失效、异位骨化、关节僵硬)的发生率。结果 3D打印组、3D打印+外固定架组术中失血量、术后引流量、手术时间、术中透视次数均显著少于对照组，组间比较差异具有统计学意义(P<0.05);3D打印+外固定架组术后肘关节屈伸角度、旋后角度、MEPS、上肢功能评定表(disability of arm, shoulder and hand questionnaire, DASH)评分优于对照组和3D打印组，组间比较差异...     

In Vitro Chondrogenic Phenotype Differentiation of Bone Marrow-derived Mesenchymal Stem Cells

In order to study the chondrogenic phenotype differentiation of adult sheep bone marrowderived mesenchymal stem cells (MSCs) in a defined medium as potential seed cells for cartilage tissue engineering, MSCs were isolated by density centrifugation with Percoll solution from bone marrow aspirated from sheep iliac crest. The third passage of MSCS were induced with H-DMEM containing TGF-β3 .IGF-I, Dexamethasone and VitC. The shape and ultrastructure of cells were observed, toluidine blue stain for GAG and immunohistochemistry for type II collagen were applied for chondrogenic phenotype identification. After 14 days of induction, MSCs changed from a spindlelike appearance to a polynal shape, a large amount of endoplasmic reticulum, Golgi complex and mitochondria were observed, and the differentiation of MSCs chondrogenic phenotype was verified by positive staining of toluidine blue and immunohistochemistry. MSCs derived from bone marrow can differentiate to chondrogenic phenotype when induced in vitro and can be used as optimal seed cells for cartilage tissue engineering.