Effect of Electroacupuncture on Spermatogenesis in Rats with Oligozoospermia of Insufficiency of Shen (Kidney) Essence Syndrome

Objective: To assess the effect of electroacupuncture(EA) on expression of cytoskeletal proteins from Sertoli cells(SCs) and spermatogenesis in rats with oligozoospermia of insufficiency of Shen(Kidney)essence syndrome(OIKES).Methods: Twenty healthy male Sprague-Dawley rats were randomly assigned to four groups using a random number table: control,tripterygium glycosides(TG) treatment,sham and EA groups(n=5 in each group).A rat model of OIKES was established by oral gavage with TG.The EA group was treated with TG and received EA at Shenshu(BL 23) and Zusanli(ST 36) acupoints for 20 min,once daily for 30 days,while the sham group received EA at identical acupoints with skin penetration without stimulation.After 30 days,the ?nal body weight and coef?cients for the testis and epididymis were calculated and sperm parameters were measured.Immunohistochemical analyses were performed to detect expression of vimentin and α-tubulin in SCs and proliferating cell nuclear antigen(PCNA) immunoreactivity in germ cells.Apoptosis in germ cells was quanti?ed by the transferase biotin-dUTP nick end labeling assay.Results: Compared with the control group,the final body weight and testis/epididymis coefficients of rats in the TG-treated group were not significantly different,but the sperm count and motility were lower(P0.05).Expressions of vimentin and α-tubulin were also signi?cantly weaker(P0.01).The PCNA immunoreactivity of germ cells was decreased(P=0.059),whereas the apoptotic index of germ cells was increased signi?cantly(P0.01).In contrast,EA at BL 23 and ST 36 acupoints signi?cantly improved the ?nal body weight as well as the sperm count,concentration and motility(P0.01 or P0.05).EA increased expression of vimentin and α-tubulin in SCs markedly,and signi?cantly enhanced PCNA immunoreactivity with decreased apoptosis in germ cells(P0.01 or P0.05).Conclusions: EA at BL 23 and ST 36 acupoints has protective effects on spermatogenesis in rats with OIKES.This effect seems to be achieved by attenuating TG-induced disruption of cytoskeletal protein in SCs.     

腭裂患儿鼓膜象及听力损失的调查

目的 :了解腭裂患儿中耳功能障碍及听力损失的发病情况。方法 :对腭裂患儿及正常儿童各 5 0例进行电耳镜检查 ,对部分能够合作患儿及正常儿童行纯音测听。结果 :腭裂患儿鼓膜异常像及听力损失发生率分别达74%及 5 8% ,对照组分别为 2 9%及 12 % ,二者有显著性差异 (P <0 0 1)。结论 :腭裂患儿应定期进行耳镜及听力检查 ,及时处理中耳疾患 ,以免严重听力损害的发生 ,对防聋治聋很有意义。     

激光相机共享网络1例

4台X线大型设备经一个简易星型局域网络分别共享挂接了2台激光相机，1台作为主用，1台作为备用，既节省了资源，又提高了2台激光相机的使用率，保证工作正常运转。     

下肢主动功能锻炼器的设计与研制

本文给出了一种具有生物正反馈功能的下肢主动功能锻炼器的设计,设计重点是比较准确地求出患者踏在脚踏板上的力和对患者的锻炼进行计数.病人使用该锻炼器循序渐进的进行锻炼,为康复和早期下床活动做准备.     

大鼠慢性前列腺炎模型中TRPA1及相关炎症因子的表达

目的:探讨模拟慢性前列腺炎/慢性盆腔疼痛综合征(CP/CPPS)动物模型疼痛产生的分子机制。方法:取SD大鼠36只,随机分为实验组和对照组,每组18只。实验组向前列腺双腹侧叶注射50μl 3%无菌λ-角叉菜胶制作大鼠无菌性前列腺炎症性疼痛模型,对照组注射等量无菌生理盐水。两组分别于造模后1周、2周和4周3个时间节点,每个节点6只大鼠,解剖获取大鼠前列腺组织、L6~S1段背根神经节(DRG)及脊髓,采用免疫组化联合Western印迹法检测神经生长因子(NGF)、瞬时受体电位通道蛋白A1(TRPA1)及降钙素基因相关肽(CGRP)在不同组织内的表达情况。结果:慢性前列腺炎症性疼痛大鼠前列腺组织中NGF、CGRP、TRPA1蛋白的表达均高于对照组(P<0.05),且随造模时间的延长各蛋白表达逐渐减弱,组间比较差异有统计学意义(P<0.05)。在大鼠L6~S1段DRG及脊髓内,造模后1周,实验组NGF、CGRP及TRPA1表达与对照组比较差异无统计学意义(P>0.05),造模后2周及4周,各蛋白表达呈持续高水平状态,与造模后1周大鼠比较差异无统计意义(P>0.05),但各实验组大鼠与对照组蛋白表达比较差异均有统计学意义(P<0.05),两时间点上两组蛋白表达比较差异无统计学意义(P>0.05)。结论:前列腺内注射λ-角叉菜胶方法制作的大鼠前列腺炎症性疼痛模型,可在分子水平模拟CP/CPPS的产生机制;TRPA1在CP/CPPS患者疼痛产生上可能发挥中继通道的作用。     

巨噬细胞集落刺激因子对破骨细胞活性的影响

巨噬细胞集落刺激因子(M-CSF)是目前临床上应用最广泛的细胞因子之一,因其具有独特和良好的升白细胞及干细胞动员作用,得到临床医师的肯定。M-CSF可诱导人破骨细胞形成,刺激其分化、存活,参与成熟破骨细胞对骨的吸收作用;而且可以抑制破骨细胞凋亡,因而可用于治疗骨骼石化症。虽然有关M-CSF对破骨细胞的生长、分化和凋亡的影响已有较广泛的研究,但对其确切的细胞生物学机制并不很清楚,本文综述了近年来该方面的研究进展。     

口服硝酸盐对大鼠背部随意皮瓣的保护作用及机制探讨

目的:探讨口服硝酸盐对大鼠背部随意皮瓣的影响,以硝酸盐-亚硝酸盐-NO通路为切入点,探讨其可能的机制.方法:将24只雄性Wistar大鼠随机分为硝酸盐组、氯化钠组和对照组,每组8只.采用改良大鼠背部随意皮瓣制作方法造模.硝酸盐干预组在术前7 d及术后每天口服0.5 mmol/L硝酸钠,氯化钠组每天口服等量氯化钠,对照组...     

五子衍宗丸含药血清对活性氧致大鼠精子活力下降的保护作用

目的观察五子衍宗丸含药血清对活性氧致大鼠精子活力下降的保护作用。方法收集8只SD大鼠附睾精子,将精子分为正常组、活性氧组、五子衍宗丸含药血清低剂量组、五子衍宗丸含药血清中剂量组、五子衍宗丸含药血清高剂量组、维生素C组,除正常组外,各组均与活性氧体外共孵育,其中五子衍宗丸含药血清低、中、高剂量组和维生素C组分别同时加入相应血清和维生素C,30min后取精子,采用计算机辅助精子分析系统观察精子运动参数的变化。结果五子衍宗丸含药血清低、中、高剂量组精子活力、精子活率、直线运动速度(VSL)、平均路径速度(VAP)、曲线运动速度(VCL)与活性氧组比较显著升高(P<0.05),但仍显著低于正常组和维生素C组(P<0.05)。结论五子衍宗丸含药血清对活性氧造成的精子活力下降具有一定的保护作用。     

Vertebral plate regeneration induced by radiation-sterilized allogeneic bone sheets in sheep

Objective： To evaluate the effects and mechanism of radiation-sterilized allogeneic bone sheets in inducing vertebral plate regeneration after laminectomy in sheep. Methods ： Twelve adult male sheep （ aged 1.5 years and weighing 27 kg on average ） provided by China Institute for Radiation Protection underwent L3-4 and L4-5 laminectomy. Then they were randomly divided into two groups： Group A （n =6） and Group B （n =6）. The operated sites of L4-5 in Group A and L3-4 in Group B were covered by ＂ H-shaped＂ freeze-drying and radiationsterilized allogeneic bone sheets （ the experimental segments）, while the operated sites of L3-4 in Group A and L4-5 in Group B were uncovered as the self controls （ the control segments ）. The regeneration process of the vertebral plate and the adhesion degree of the dura were observed at 4,8,12,16,20 and 24 weeks after operation. X- ray and CT scan were performed in both segments of 1.34 and L4-5 at 4 and 24 weeks after operation. Results： In the experimental segments, the bone sheets were located in the anatomical site of vertebral plate, and no lumbar spinal stenosis or compression of the dura was observed. The bone sheets were absorbed gradually and fused well with the regenerated vertebral plate. While in the control segments, the regeneration of vertebral plate was not completed yet, the scar was inserted into the spinal canal, compressing the dura and the spinal cord, and the epidural area almost disappeared. Compared with the control segments, the dura adhesion degree in the experimental regenerated segments was much milder （ P 〈 0. 01 ）, the internal volume of the vertebral canal had no obvious change and the shape of the dura sack remained well without obvious compression. Conclusions： Freeze-drying and radiation-sterlilized allogeneic bone sheets are ideal materials for extradural laminoplasty due to their good biocompatibility, biomechanical characteristics and osteogenic ability. They can effectively reduce formation of post-laminectomy scars, prevent recurrence of post-lamlnectomy spinal stenosis, and induce regeneration of vertebral plates.     

无细胞真皮基质的研制

目的研制人同种脱细胞真皮基质,用于大面积深度烧伤后真皮成分的替代、美容医学中的填充及皮肤组织工程中的支架材料。方法获得的正常人新鲜尸体皮肤,用高渗盐溶液去除表皮,十二烷基硫酸钠、胰蛋白酶等处理以去除真皮中的细胞成分,得到人同种脱细胞真皮基质,经光镜、电镜和免疫组织化学分析。结果经处理后得到的人无细胞真皮基质,完全去除了表皮和真皮中的细胞成分,保留了完整的基底膜复合物,胶原束结构和排列正常,弹力纤维结构正常。结论用此方法制备无细胞真皮基质,能完全去除表皮和真皮中的细胞成分,不改变真皮中胶原纤维和弹力纤维结构,其制备工艺操作性强,是一种简单有效的制备方法。