间硝苯地平对血管紧张素Ⅱ促进血管平滑肌细胞增殖和蛋白质合成的影响

以培养血管平滑肌细胞(vascularsmcothmusclecell,VSMC)为模型,观察了间硝苯地平(m-nifedipine,m-Nif)对血管紧张素Ⅱ(angiotensinⅡ,ANGⅡ)促进VSMC增殖和蛋白质合成的影响。结果表明,m-Nif抑制ANGⅡ(100nmol·L^-1)引起VSMC[³H]thymidine和[³H]leucine参入,并呈剂量依赖性。m-Nif(2×10^-6mol·L^-1)可抑制ANGⅡ对VSMC的刺激、DNA及蛋白质合成速率,分别降低了46%,58%,53%。提示m-Nif可抑制ANGⅡ对VSMC增殖和蛋白合成的促进作用。     

Hemolytic-uremic syndrome: intrarenal arterial Doppler patterns as a useful guide to therapy

Seventeen children with acute renal failure due to the hemolytic-uremic syndrome were examined with duplex Doppler ultrasound. Serial measurements of intrarenal arterial pulsatility were obtained by means of the Pourcelot index. These were compared with daily urine volume, both during the phase of renal failure (during which most of the children were undergoing peritoneal dialysis) and during recovery of renal function. During oliguria or anuria there was either no intrarenal arterial flow (ie, absent Doppler shifts), or absent, reversed, or markedly reduced diastolic flow. Within 24-48 hours after diastolic Doppler shifts returned to normal, diuresis occurred. The Doppler examination enabled prediction of recovery and allowed dialysis treatment to be abbreviated or, in some cases, canceled.     

肾移植前后严重焦虑对肾功能衰竭患者病情的影响：1例报告

目的:观察焦虑情绪对肾功能衰竭患者肾移植前后病情转归的影响,并探讨其治疗对策。方法:患者为36岁男性,2005-11入华中科技大学同济医学院附属同济医院肾内科,入院诊断为慢性肾小球肾炎,慢性肾功能不全,失代偿期,患者知情同意。因严重焦虑引起肾功能迅速恶化,在1个多月内从代偿期迅速进展到尿毒症期,并经肾活检证实病情不可逆转,接受血液透析治疗,并行肾移植。观察其接受血液透析前后和肾移植前后的焦虑状态评分及肾功能。汉密顿焦虑量表包括14个项目,总评分超过29分,可能为严重焦虑;小于6分,患者没有焦虑症状。结果:①焦虑状态的评估结果:血液透析前患者的焦虑状态评分为31分,属于严重焦虑。血液透析后和肾移植前后多次评分,患者焦虑状态均完全解除。②随访结果:肾移植术后1个月,患者重新工作,随访至今,复查各项指标基本正常。结论:严重焦虑可使慢性肾小球肾炎患者肾功能在短期内迅速恶化,对病情的发展和转归有明显影响。在治疗过程中除了积极治疗原发疾病外,还应重视心理干预治疗。     

Gene expression of circulating tumour cells and its correlation with tumour stage in breast cancer patients

Background

Breast cancer (BC) represents one of the leading causes of cancer related deaths worldwide. New tools for diagnostic staging and therapeutic monitoring are needed to improve individualized therapies and improve clinical outcome. The analyses of circulating tumour cells may provide important prognostic information in the clinical setting.

Materials and methods

Circulating tumour cells (CTC) of 63 BC patients were isolated from peripheral blood (PB) through immunomagnetic separation. Subsequently, RT-PCR or mPCR for the genes ga733.2, muc-1, c-erbB2, mgb-1, spdef and c-erbB2 were performed. Subsequently, expression data were correlated with the tumour stages. Fourteen healthy individuals served as controls.

Results

Significant correlations with tumour stages were found in single gene analyses of ga733.2, muc-1 and in multi-gene analyses of ga733.2/muc-1/mgb1/spdef. Furthermore, a significant correlation of Ca 15-3 and all studied genes was also observed.

Conclusion

Herein, we demonstrated a positive correlation of a gene signature consisting of ga733.2, muc-1, mgb1 and spdef and advanced stages of BC. Moreover, all studied genes and gene patterns revealed a significant correlation with Ca 15-3 positive cases.     

Contraceptive potential of a mifepristone-nomegestrol acetate sequential regimen in women

The effectiveness of a sequential regimen consisting of mifepristone, 10 mg/day for 15 days, followed by nomegestrol acetate (NOMA), 5 mg/day for the next 13 days, for inhibiting ovulation and maintaining regular bleeding cycles was assessed in 10 surgically sterilized volunteers who were followed for one pretreatment and three treated cycles. Hormonal determinations in blood and urine, ovarian ultrasonography, bleeding records in all cycles and an endometrial biopsy taken on day 22-25 of the third treatment cycle were used to monitor the effects of treatment. During treatment, 24 monophasic (no sustained progesterone rise above 12 nmol/l) and six biphasic cycles were recorded. Nine follicular ruptures were detected echographically in these 30 treated cycles, five of which occurred in monophasic cycles. All follicular ruptures occurred on days 1-7 of NOMA treatment. Echographic and endocrine features of ovulatory cycles were both present in only four treated cycles (13.3%). Development of a secretory endometrium was achieved in all cases, but it was always irregular. Regular withdrawal bleeding occurred in all subjects and no adverse reactions were recorded. The ovarian and endometrial effects of this regimen justify testing its contraceptive effectiveness in phase 2 clinical trials.      

诊断性ERCP研究进展

内镜下逆行胰胆管造影术(ERCP)仍是目前诊断胰胆疾病的金标准.但ERCP术后胰腺炎不可避免.自从出现磁共振胰胆管造影(MRCP)以来,MRCP已被广泛应用于临床,具有代替诊断性ERCP的潜在可能性.但目前MRCP设备尚不普及.和ERCP相比,MRCP图象不十分理想.随着技术进步,诊断性ERCP应用有可能逐渐减少,成为取得组织学、细胞学标本和功能研究的方法.     

心房颤动的电生理重构

心房颤动 (atrial fibrillation,AF)是临床上最常见的一种持续性心律失常 ,其发病率随年龄而增加 ,40岁以下人群发病率约为 0 .2 %～ 0 .3% ,6 0～ 90岁年龄组发病率增至5 %～ 9% [1 ] 。新近 Framingham的研究表明 AF可以成为一种独立的因素使患者病死率增加 [2 ] 。 AF的发病机制尚未完全清楚 ,可能为非单一机制 ,普遍认为持续性 AF是由于心房内的多子波折返 ,每 1个折返环本身都在不停地改变其大小及传导方向。近年来 ,在 AF的基础及临床研究中 ,两个方面的进展具有十分重要的意义 :一是发现部分 AF起源于心房内某些部位如肺静脉口…