The correlation between TNF-α, IL-6 in cervical mucous during follicular development and ovulation stimulation in different protocols

Objective To investigate the correlation between TNF-α and IL-6 levels in cervical mucous during follicular development and ovulation stimulation in different protocols.Methods 36 infertile women were set up as experimental groups,divided into CC, HMG, IVF-ET group,each group consisted of 12 infertile women and 15 women with normal menstrual cycles were choiced as control group.Cervical mucous during follicular phase, luteal phase and ovulation phase were collected.TNF-α, IL-6 levels in cervical mucous were measured by radioimmunology assay (RIA).Follicular development were monitored by transvaginal ultrasonagraphy.Results (1) TNF-α levels in cervical mucous of experimental groups and control group were periodically various among the reproductive cycle.It increased during follicular phase, reached to peak during ovulation phase, and decreased during luteal phase (P＜0.05).IL-6 levels had no obvious periodical changes.(2) Compared with CC and control group, levels of TNF-α,IL-6 in HMG and IVF-ET group were significantly higher (P＜0.05).(3) Levels of TNF-α and IL-6 in cervical mucous were positively correlated with the dominant follicle diameter (r=0.261, r=0.192 respectively,P＜0.05).(4) TNF-α and IL-6 showed positive correlation in the reproductive cycle (r=0.782,P＜0.05).Conclusions (1) TNF-α level shows a cyclic change in the reproductive cycle and peaks during ovulation,whereas IL-6 level does not.(2) TNF-α and IL-6 may play a certain role in the process of follicular development and ovulation.(3)The levels of TNF-α and IL-6 are up-regulated by gonadotrophic hormone.(4) TNF-α and IL-6 may have coordination properties and participate in the same biological effects.     

Identification of a recurrent t(4;6) chromosomal translocation in prostate cancer

PURPOSE: We developed and describe a practical method by which primary prostate cancer specimens can be screened for recurrent chromosomal translocations, which is a potential source of fusion genes, as well as a process by which identified translocations can be mapped to define the genes involved. MATERIALS AND METHODS: A series of 7 prostate cancer cell lines and 25 transiently established primary cell cultures, which were sourced from tissue harvested at 16 radical prostatectomies and 9 channel transurethral prostate resections, were screened for chromosomal translocations using multiplex-fluorescence in situ hybridization technology. A series of fluorescence in situ hybridization based breakpoint mapping experiments were performed to identify candidate genes involved in regions associated with recurrent translocation. RESULTS: Our analysis identified the repetition of 2 translocations in prostate cancer lines, that is t(1;15) and t(4;6), at a frequency of 28% and 57%, respectively. More significantly 4 of the 25 subsequently established primary cultures (16%) also revealed a t(4;6) translocation. Using the LNCaP cell line the breakpoints involved were mapped to the t(4;6)(q22;q15) region and a number of candidate genes were identified. CONCLUSIONS: We found that the t(4;6) translocation is also a repeat event in primary cell cultures from malignant prostate cancer. Breakpoint mapping showed that the gene UNC5C loses its promoter and first exon as a direct result of the translocation in the 4q22 region. As such, we identified it as a possible contributor to a putative fusion gene in prostate cancer.     

Tacrolimus monotherapy in membranous nephropathy: a randomized controlled trial

Membranous nephropathy is a common cause of nephrotic syndrome in adults. Although some patients with membranous nephropathy achieve a spontaneous remission, renal function continues to deteriorate in others. We conducted a prospective randomized trial evaluating monotherapy with tacrolimus to achieve complete or partial remission in patients with biopsy-proven membranous nephropathy. Twenty-five patients received tacrolimus (0.05 mg/kg/day) over 12 months with a 6-month taper, whereas 23 patients were in the control group. The probability of remission in the treatment group was 58, 82, and 94% after 6, 12, and 18 months but only 10, 24, and 35%, respectively in the control group. The decrease in proteinuria was significantly greater in the treatment group. Notably, six patients in the control group and only one in the treatment group reached the secondary end point of a 50% increase in their serum creatinine. No patient in the tacrolimus group showed a relapse during the taper period. Nephrotic syndrome reappeared in almost half of the patients who were in remission by the 18th month after tacrolimus withdrawal. We conclude that tacrolimus is a very useful therapeutic option for patients with membranous nephropathy and preserved renal function. The majority of patients experienced remission with a significant reduction in the risk for deteriorating renal function.     

CFTR stabilizes ENaC at the plasma membrane

CFTR was reported to regulate ENaC channel opening, decreasing ENaC activity in airways and increasing it in sweat ducts. We generated MDCK-I cell lines stably expressing tagged alphabetagammaENaC+CFTR or ENaC alone, and developed an assay to quantify cell-surface half-life of ENaC. Surprisingly, we found that co-expressed CFTR stabilizes ENaC at the plasma membrane, suggesting that CFTR regulates ENaC stability, not just opening.     

皮层躯体感觉诱发电位在监测腰神经根损伤中作用的研究

目的：利用大鼠髓核突出动物模型。探索皮层躯体感觉诱发电位（CSEP）的波幅和潜伏期变化是否与神经根性疼痛有关系。方法：取大鼠自体尾部的髓核无压迫下放置在L4和L5神经根上，制成髓核突出动物模型。分别在术后3d,1,2及4周观察大鼠术侧肢体机械刺激敏感性和热刺激敏感性和热刺激敏感性的变化，并引出大鼠后肢CSEP，观察术侧肢体CSEP的变化。结果：在无明显机械压迫的情况下，大鼠腰神经根上植入自体髓核可产生痛觉过敏，CSEP波幅增高。结论：髓核自身是引起腰腿痛的重要原因，CSEP波幅的增高与神经根性疼痛有一定相关性。     

良性前列腺增生细胞因子变化的研究

目的　探讨与细胞增生有关的细胞因子与BPH发生的相关性。方法　人前列腺分对照组 (正常前列腺 )和实验组 (良性前列腺增生 )。常规组织学染色观察组织形态的变化 ,免疫组织化学方法观察bFGF ,VEGF和EGFR在BPH中的改变。结果　BPH的病理变化呈多类型化。BPH的组织中bFGF和VEGF在间质中明显增加 ;EGFR在腺上皮和间质细胞中都增加明显。结论　在BPH的组织异常增殖中 ,间质的增殖可能与bFGF和VEGF的分泌增多关系密切 ,而EGFR与间质和腺上皮的异常增殖均有关。     

贲门失驰缓症术式探讨

目的：探讨治疗贲门失弛缓症的理论手术。方法：回顾性分析66例贲门失驰缓症病人的治疗效果，评估手术方式与其疗效的关系。结果：单纯Heller肌层切开术15例，Heller 手术附加Belsey Mark IV胃底折叠术17例，自行设计的改良Heller手术附加胃底折叠术34例，全组随访3年以上，失访3例按无效计算，疗效优，良占91．2％（60／66），单纯Heller手术病例术后复发3例（3／15，20．0％），发生反流性食管炎4例（4／15，26．7％），Heller手术附加Belsey MarkIV胃底折叠术发生反流性食管炎2例（2／17，11．8％），膈裂孔疝1例（1／17，5．9％），而改良Heller手术附加胃底折叠术无复发及反流，全组无手术死亡及其它并发症。结论：改良Heller手术附加胃底折叠术是治疗贲门失驰缓症的较理想术式。     

AO C3型桡骨远端骨折固定方法研究的生物力学模型

目的设计一个C3型桡骨远端骨折尸骨模型并评估其有效性。方法设计并制作一个C3型桡骨远端骨折尸骨模型,并用其评估背侧钢板固定桡骨远端骨折的生物力学特性。结果在完整标本上100N纵向负荷仅使桡骨产生1～2mm弹性变,其中桡骨传递83.82%的负荷。在7具标本上成功制作C3型桡骨远端骨折模型,用背侧钢板固定骨折后,发现桡骨传递75.64%的负荷。结论本研究成功制作可重复性好的C3型桡骨远端骨折尸骨模型,生物力学测试提示在100N纵向负荷下,背侧钢板固定不能完全重建桡骨远端骨折的力学性能。     

电视腹腔镜在妇科疾病诊治中的应用

目的 :探讨腹腔镜在妇科疾病诊治中的临床价值。方法 :选取 2 0 0 0年 10月至 2 0 0 1年 12月妇科良性疾病行电视腹腔镜妇科手术 75例 ,其中腹部既往手术史 11例。结果 :74例镜下成功完成 ,1例因宫角腺肌瘤镜下手术困难中转开腹。手术时间 30～ 16 0min ,术中出血 1～ 15 0ml ,其中 2 1例出血不足 1ml;肛门排气最短 6小时 ,最长 30小时 ;30小时内均能下床活动。术后 8例应用镇痛药 ,除个别患者低热外 ,术后一般无发热。术中无并发症 ,术后并发症为肩痛 ,肋下痛 ,皮下气肿。结论 :腹腔镜在妇科疾病诊治中的应用具有广阔前景     

经内镜胆管引流对恶性胆管梗阻术前肝功能恢复的疗效观察

目的　比较经内镜胆管引流术对梗阻性黄疸术前肝功能恢复的疗效。方法　腹壶周围癌、胰头癌共 76例 ,引流组 3 6例 ,其中行内置管引流 2 9例 ,鼻胆管引流 7例 ;对照组 40例 ,未做任何方式的胆管减压引流。结果　入院后第 14 d丙氨酸氨基转移酶 (ALT)、凝血酶原时间 (PT)和血清总胆红素 (TBIL)水平下降幅度分别为 :引流组 71.46± 11.81% ,2 3 .0 9±9.5 6% ,81.5 8± 7.5 0 % ;对照组 48.87± 19.3 2 % ,18.3 7± 9.3 1% ,5 .88± 3 .65 %。结论　经内镜胆管引流术能迅速改善梗阻性黄疸病的肝功能 ,为后续治疗创造良好的条件