动物细胞培养过程中pH和溶氧的关联控制

本文通过对动物细胞培养过程中pH值和溶氧(DO)水平控制要求的分析,设计了用空气、氧气、氮气和二氮化碳四组气体关联控制pH值和DO水平的控制系统。该系统根据对瞬时pH值和DO值参数的检测,通过微处理机进行一系列的逻辑判断和具有PI调节规律的DDC增量词节计算,再经四气体关联互补计算和多重时序控制环节,综合调节四组气体电磁阀的相互开闭时间,实现对培养过程中pH值和DO水平的控制,满足动物细胞生长的需要。     

Measurement of degraded fecal hemoglobin-heme to estimate gastrointestinal site of occult bleeding appraisal of its clinical utility

Hemoglobin-heme is variably converted to porphyrin during enterocolic transit. This intestinal converted fraction, as measured by HemoQuant, was elevated as a predictor of the occult bleeding site in 152 patients with discrete lesions. The intestinal converted fraction, expressed as the percentage of total fecal hemoglobin, was similar with upper gastrointestinal and proximal colon lesions. Within the colon, values trended downward with more distal location: means ± standard deviations were 18±14 proximal colon, 16 ±15 sigmoid, and 10±10 rectum. The amount of fecal blood also affected the intestinal converted fraction; correcting for hemoglobin concentration improved separation by site. Corrected intestinal converted fraction values were significantly lower with rectal (P< 0.0005) and sigmoid (P<0.02) lesions than with proximal colon lesions. Unfortunately, large within-site variation caused considerable overlap between sites. We conclude that the intestinal converted fraction is influenced by the site and amount of bleeding. However, its clinical utility is compromised by substantial individual differences in luminal hemoglobin metabolism.Presented in part at the Annual meeting of the American Gastroenterological Association in San Francisco in May of 1986 (Gastroenterology 90:1431, 1986).Supported by the Mayo Foundation.     

汽车安全气囊所致的眼外伤

目的：报告了因汽车安全气囊造成的眼外伤及化学性烧伤。希望引起眼科同仁的高度重视．方法：４例病人均是进口高档小卧车，在发生碰撞时因汽车安全气囊高速膨胀打开及气囊破裂所致的眼损伤及化学烧伤．分析了汽车型号及种类，事故发生时的速度，眼损伤的类型和视力情况．结果：第一例病人为碱性化学性角膜炎伴虹膜根部离断及瞳孔括约肌破裂而造成瞳孔扩大；第二例病人为近视镜片致角巩膜板层撕裂伤；第三例病人为广泛角膜擦伤伴前房出血；第四例病人为视网膜水肿出血伴后极部脉络膜裂伤．结论：安全气囊能保护生命降低致伤率，但因气囊的冲击力量引起的机械损伤和气囊中强碱性气体导致的化学烧伤更要引起国内眼科医生的注意．     

结肠造口结肠癌原位移植模型的建立

Objective To establish a colorectal cancer colostomy orthotopic transplantation mice model. Methods A colostomy was preformed in BALB/C nu-nu nude mice. After two weeks, when the stoma healed, tumor tissues developed from Lovo cells were implanted into the submucosa of the stoma. When tumor grew up to 5 nun, fluorouracil(5-FU, 20 mg/kg) was administrated by intraperitoneal injection. Tumor developed at the colostomy was observed and its biological characteristics and behaviour were evaluated. Results Colostomy was performed in 10 mice and stoma healed at two weeks. Ten colostomies developed detectable tumor in two to three weeks. Three to five weeks later, the tumors grew up to 5 mm. Survival time of mice injected with 5-FU was (15.2±3.7) weeks (ranged: 11-21 weeks), and the survival time of the no-treantment group was (12.3±2.8)weeks (ranged:9-19 weeks). The difference was statistically significant (P=0.001). The rate of mesenteric metastasis was 1/5 and 2/5 in the treatment and no-treatment group respectively. Conclusion Colostomy orthotopic transplantation mice model is an ideal mice model with the advantages of having high success rate, visualization of implanted tumor in living animal, long survival time and significant tumor response to common chemotherapeutic agent.     

上消化道出血798例分析

目的　探讨上消化道出血的病因和相关因素。方法　回顾性分析我院 8年来 798例上消化道出血病人的临床资料。结果　男性并发上消化道出血占 80 .2 0 %、女性占 19.80 % ,男性明显高于女性 (χ2 =6 .5 6 ,P <0 .0 5 ) ;青年人、中年人及老年人各占 2 7.82 %、5 7.6 1%和 14 .5 7% (P <0 .0 1) ,老年人合并重度上消化道出血多见 ;不同性别、年龄者出血的原因不尽相同。结论　上消化道出血的病人以消化性溃疡、胃癌、急性胃粘膜损害、食道胃底静脉曲张为最常见的病因 ,性别、年龄等均为上消化道出血的相关因素     

温州市艾滋病流行特征及流行趋势分析

目的 分析温州市1985～2000年HIV／AIDS流行现状及影响因素，为采取有效控制措施提供依据。方法 分析全市的艾滋病监测及实验室资料。结果 1985年发现首例HIV抗体阳性，至2000年底累计发现感染者124例，发病27例，死亡16例。感染者以青壮年为主，男女比例为3．28：1，静脉推注吸毒和性接触是主要传播途径。结论 预计今后几年温州市高危人群中HIV感染者将大幅度增长，必须采取有效措施预防和控制艾滋病。     

海洛因依赖者的个性心理特征及其对复吸的影响分析

目的了解自愿戒毒的海洛因依赖者的个性心理特征及其对脱毒后复吸的影响。方法使用MMPI对30例自愿戒毒的海洛因依赖者和30例未对任何药物成瘾的正常人的个性心理特征进行对照分析，明确海洛因依赖者个性心理特征，在此基础上找出个性心理特征与复吸原因的联系。结果海洛因依赖者在MMPI各量表中诈病(F)，精神病态(Pd)，疑病症(Hs)，偏执狂(Pa)，精神分裂(Sc)等量袁与对照组有明显的差异，且这些差异与脱毒者复吸原因有着直接的关系。结论海洛因依赖者的个性心理特征为明显的反社会行为和社会适应障碍，对自己健康过分关注，缺乏对社会环境的归属感，易将自己的问题合理化而归因于剐人，并由这种心理特征增加了复吸率。     

强迫症患者的防御机制、父母教养方式及个性特征的调查分析

目的　探讨强迫症患者的防御机制、父母教养方式及其个性特征。方法　采用防御方式问卷 (DSQ)、父母养育方式评价量表 (EMBU)及艾森克个性问卷 (EPQ)对 36例强迫症患者进行了问卷调查 ,并与 36例正常受试者加以比较。结果　①强迫症组中间型和不成熟防御机制因子分均明显高于正常对照组 (P <0 0 1) ,而成熟防御机制因子分则明显低于正常对照组 (P <0 0 5 ) ;②强迫症组父母的情感温暖因子分低 ,而父母的惩罚、拒绝因子分和母亲的偏爱被试因子分高 ,同正常对照组比较 ,差别均具有显著性或非常显著性意义 (P <0 0 1或P <0 0 5 ) ;③强迫症组EPQ的N因子分明显高于正常对照组 ,而E因子分则明显低于正常对照组 (P <0 0 1)。结论　强迫症患者的防御机制、父母教养方式及个性特征与正常人有着明显的不同 ,它为今后开展分析性心理治疗 ,实施心理干预措施提供了依据。     

A retrospective study on estrogen or contraceptives in the treatment of dysfunctional uterine bleeding in adolescent patients

Objective: To investigate the clinical efficacy of estrogen or contraceptives in the treatment of acute bleeding of dysfunctional uterine bleeding (DUB) in adolescent patients and the optimal starting dosage of drugs.Methods: The clinical records of 106 girls who with DUB and moderate or severe anemia from February 1990 to July 2005 were analyzed retrospectively.Results: All 106 patients received hormonal therapy. 56 patients were treated with estradiol benzoate(E2), 30 patients with conjugated equine estrogen(CEE) and 20 patients with combined oral contraceptives (COCs). The rates for rapidly controlling bleeding and for rapidly stopping bleeding in E2 group were higher than those in CEE group ,but similar to those in COCs group. The days for controlling and completely stopping bleeding were not significantly different between the starting dosages (≤8 mg/d and >8 mg/d) of E2 groups, and also there were no statistical difference between the starting dosages (<7.5 mg/d and ≥7.5 mg/d) of CEE groups, but during the treatment the rate of increasing the dosage in <7.5 mg/d group was higher than that of ≥7.5 mg/d group(40% vs. 5%),while there were no statistical difference between the starting dosages (≤3 pills/d and >3 pills/d) of COCs groups. Conclusions: The clinical efficiency of E2 treatment on DUB in adolescent patients is similar to that of COCs. And the efficacies of treatment of DUB with E2, CEE and COCs in the different dosages are similar.     

部分创面外用抗菌药物与成纤维细胞生长因子2、表皮生长因子、重组人生长激素对成纤维细胞生物学特性影响的实验研究

目的观察部分创面外用抗菌药物与成纤维细胞生长因子(FGF)2、表皮生长因子 (EGF)、重组人生长激素(rhGH)对成纤维细胞生物学特性的影响。方法体外培养成纤维细胞, 按所加药物不同分为对照组(常规培养)、丁胺卡那霉素(0．021、0．210、2．100 mg/L)组、庆大霉素(5、 50、500 mg/L)组、氯霉素(0．01、0．10、1．00 mg/L)组、磺胺米隆(5、10 g/L)组、FGF2(2 400 U/ml)组、 EGF(2 000 U/ml)组及rhGH(0．016、0．160、1．600 g/L)组。用噻唑蓝(MTT)法测定各组成纤维细胞增殖活性[吸光度(A)值],用流式细胞仪检测细胞周期,并于显微镜下观察细胞形态的变化。结果 (1)MTT法检测:与对照组A值0．455 3±0．021 7比较,各种剂量丁胺卡那霉素组、庆大霉素组、氯霉素组、磺胺米隆组成纤维细胞A值均明显降低(P<0．05或0．01),其中磺胺米隆(5、10 g/L)组降低最明显,分别为0．101 3±0．001 1、0．095 0±0．004 1(P<0．01)。FGF2组及0．016 g/L rhGH 组细胞A值明显高于对照组(P<0．05),而EGF组及0.160、1．600 g/L rhGH组A值与对照组接近 (P>0．05)。(2)细胞周期检测:对照组细胞增殖指数(PI)为(9．63±0．45)％,与之比较,0．210 mg/L丁胺卡那霉素组细胞PI值无明显变化(P>0．05),FGF2组、EGF组及0．016 g/L rhGH组PI值均明显升高,分别为(46．76±2．33)％、(42．30±1．41)％、(13．29±0．47)％(P<0．05或0．01)。 (3)形态学观察:对照组、EGF组及0．160、1．600 g/L rhGH组成纤维细胞数目较多,呈长条形或梭形, 轮廓不清,透明度高;丁胺卡那霉素组、庆大霉素组、氯霉素组、磺胺米隆组细胞数目较少,形态不规则,轮廓清晰,透明度低,细胞内多有颗粒样物质及空泡;FGF2组、0．016 g/L rhGH组细胞分布均匀、密集,呈长条形或梭形,核分裂相多见,轮廓不清,透明度高。结论不同创面外用药物对成纤维细胞生物学特性的影响各异,在创面修复过程中应选择合适的创面外用药物,以促进愈合并抑制瘢痕增生。