Objective To observe the eotaxin expression of rat airway smooth muscle cells ( ASMCs) induced by serum from asthmatic rats, and explore the possible mechanism. Methods ASMCs isolated fromrat tracheas were cultured in vivo. Then they were treated with serum from asthmatic rats, or treated with serum and dexamethasone simultaneously. The level of eotaxin protein in supernatant and eotaxin mRNA in ASMCs were measured by ELISA and reverse transcription-polymerase chain reaction. The expression of cAMP in ASMCs was examined by radioimmunoassay. Results After the treatment with sensitized serum, the eotaxin level in supernatant and mRNA expression in ASMCs were significantly higher [ ( 107. 09 ±7. 12) ng/L vs. ( 0. 63 ±0. 56) ng/L, P lt; 0. 05; 1. 39 ±0. 04 vs. 0. 05 ±0. 01, P lt;0. 05] , and the level of cAMP in ASMCs was significantly lower compared with the control group [ ( 17. 58 ±3. 62) ng/L vs. ( 32. 39 ±3. 36) ng/L, P lt; 0. 05] . After intervened by the sensitized serum and dexamethasone simultaneously, the protein and mRNA expressions of eotaxin were lower compared with those intervened by sensitized serumalone [ ( 64. 18 ±4. 04) ng/L and 0. 77 ±0. 19] . The level of eotaxin in supernatant was negatively correlated with cAMP level in ASMCs ( r = - 0. 788, P lt; 0. 01) . Conclusions There is anautocrine function in ASMCs as inflammatory cells after stimulation with sensitized serum. Eotaxin may play an important roll in the pathogenesis of asthma via a cAMP-dependent pathway.
目的 观察茵陈柴平汤治疗重度慢性乙型肝炎的疗效及不良反应。 方法 2009年3月－2010年3月，选择采用茵陈柴平汤联合常规保肝药物治疗50例重度慢性乙型肝炎患者（治疗组），并与50例仅用常规保肝药物治疗的重度慢性乙型肝炎患者（对照组）进行比较，观察治疗2、4周时的临床症状、肝功能及凝血酶原活动度等指标的变化。 结果 治疗2、4周时，治疗组在肝功能及凝血酶原活动度等指标均有显著改善，无严重不良反应；4周时，治疗组的症状缓解率（84%）明显高于对照组（66%）；其总有效率（96%）亦高于对照组（80%）。 结论 茵陈柴平汤治疗重度慢性乙型肝炎具有较好的临床疗效，且无严重不良反应。
目的 探讨后路手术中360°植骨融合术治疗腰椎滑脱症的近期疗效。 方法 2008年1月－2011年2月收治39例腰椎滑脱症患者，男21例，女18例；年龄35～75岁，平均51岁。病程12～50个月，平均31个月。滑脱部位：腰3 1例，腰4 11例，腰5 24例，腰4、5 3例。腰椎退变性滑脱27例，峡部裂性滑脱12例。按Meyerding分度：Ⅰ度21例，Ⅱ度13例，Ⅲ度5例。患者均有腰腿痛症状，保守治疗无效后行后路减压、复位及椎弓根钉棒系统内固定，术中以360°行椎间及后外侧三维立体植骨融合，在椎体前中柱采用植骨加椎间融合器的融合方式。术后定期随访，摄X线片检测融合情况，使用视觉模拟疼痛（VAS）评分评估症状缓解情况，Greenough-Fraser综合评分评价腰腿痛治疗结果。 结果 有36例患者获随访，随访时间12～36个月，平均24个月。植骨愈合率100%，愈合时间10～18个月，平均14个月。无内固定松动、断裂、外露及脱落等并发症发生。术前下肢神经根痛VAS评分为（7.52 ± 1.23）分，末次随访时为（1.67 ± 1.18）分；下腰痛术前（6.83 ± 1.51）分，末次随访时为（1.11 ±0.76）分；手术前后比较差异均有统计学意义（P＜0.05）。Greenough-Fraser综合评分术前为（24 ± 7）分，末次随访时为（55 ± 4）分，差异有统计学意义（P＜0.05）。 结论 360°植骨融合术治疗腰椎滑脱症是一种确实有效的融合方法，利于提高相应区域的植骨融合率及恢复椎间隙高度，使融合更稳定。
ObjectiveTo explore the pathogenesis of acute pancreatitis during pregnancy, differential diagnosis, and standardized treatment. MethodsThe related literatures at home and abroad in recent years were reviewed, and the progress of pathogenesis and treatment of acute pancreatitis during pregnancy were summarized. ResultsThe common cause of acute pancreatitis during pregnancy include biliary system diseases, hyperlipidemia, hyperparathyroidism, the direct effect of pregnancy on the pancreas, etc. According to the different pathogenic factors of acute pancreatitis during pregnancy, the laparoscopic cholecystectomy (LC), endoscopic retrograde cholangiopancreatography (ERCP), low-fat diet combined with Omega-3 fatty acids, parathyroid adenoma resection, or terminal pregnancy could be use. ConclusionAcute pancreatitis during pregnancy is dangerous, the cause, general condition of patients, and the growth of fetus should be give full consideration, and the diagnosis and treatment are standardized.
Objective To observe the effects of cryopreservation and resuscitation on the biological characteristics of mesenchymal stem cells (MSCs) derived f rom human umbilical cord blood. Methods MSCs were isolated and cultured f rom human umbilical cord blood in vitro. The cells were passaged , and the third generation of MSCs were cryopreserved in－196 ℃ liquid nitrogen for 4 weeks with cryopreservation medium , which contained 10 % dimethyl sulfoxide (DMSO) and 90 % fetal calf serum ( FCS) . The morphology , proliferation and differentiation of MSCs were investigated and compared with those of MSCs before cryopreservation. Results There was no significant difference of morphology between pre-cryopreserved MSCs and the ones af ter resuscitation. It was observed that all MSCs were spindle-shaped and showed adherence growth characteristic before and af ter cryopreservation. The cell growth curves of MSCs were also similar before and af ter cryopreservation. Even though the curve of resuscitated MSCs descended a little as compared with that of pre-cryopreserved MSCs , there was no significant difference ( Pgt; 0. 05) . After 2-week adipocytic differentiation induction , fat drops could be found in the kytoplasm of MSCs and they were red when stained with oil-red O staining , which suggested that MSCs could be induced and differentiated into adipocytes. Af ter 4-week osteoblastic differentiation induction , MSCs could be induced and differentiated into osteoblasts , and calcium node showed black when stained with Von Kossa staining. There were no significant changes of the differentiating ability of MSCs into adipocyte and osteoblast before and after cryopreservation. Conclusion MSCs derived from human umbilical cord blood maintains their biological characteristics af ter cryopreservation and resuscitation.
Objective To investigate the strategy of treatment and prevention of hemorrhage after radical resection of hilar cholangiocarcinoma. Method Reviewing the related literatures at home and abroad in recent years, to summarize the progress of treatment and prevention of hemorrhage after radical resection of hilar cholangiocarcinoma. Results We should clear the postoperative bleeding time, extent, cause, and location, to help the clinician to choose the appropriate timing of intervention and treatment. The patients with early hemorrhage and mild degree hemorrhage could be treated conservatively. If patients with severe hemorrhage and hemodynamic disorders, surgical intervention must be decisive. Patients with late hemorrhage would have serious consequences, and these patients should receive interventional or surgical treatment as early as possible. Conclusions For patients with hilar cholangiocarcinoma after radical resection, doctors need to do accurate preoperative evaluation, meticulous operation, and intensive management after operation, to reduce the incidence of hemorrhage after radical resection of hilar cholangiocarcinoma. If the postoperative hemorrhage occurs, the cause, location, time, and degree of hemorrhage should be clearly defined to facilitate clinicians to make rapid clinical decisions and to develop treatment programs.