Population-based case-control study of CYP11A gene polymorphism and breast cancer risk.

The CYP11A gene encodes the cholesterol side-chain cleavage enzyme (P450scc) that catalyzes the first and rate-limiting step for the biosynthesis of sex hormones. A pentanucleotide repeat [(TAAAA)n] polymorphism in the 5' of the CYP11A gene has been reported to be related to the risk of polycystic ovary syndrome, an inherited endocrine disorder characterized by hyperandrogenemia. We investigated the association of this polymorphism with breast cancer risk in a population-based case-control study conducted among Chinese women in Shanghai. Genotype assays were completed for 1015 incident breast cancer cases and 1082 community controls. Three common alleles with 4, 6, or 8 TAAAA repeats were identified in the study population. The frequency of the 8 repeat allele was more common in cases (12.6%) than controls (8.5%) (odds ratio = 1.6, 95% confidence interval = 1.3-1.9; P < 0.0001). Compared to subjects who did not carry this allele, adjusted odds ratios were 1.5 (95% confidence interval = 1.2-1.9) and 2.9 (1.3-6.7) (P for trend, <0.001), respectively, for those who carried one and two copies of this allele. This positive association was observed in both pre- and postmenopausal women and all strata defined by major breast cancer risk factors, including years of menstruation, body mass index, and waist-to-hip ratio. The results from this study indicate that the TAAAA repeat polymorphism near the promoter region of the CYP11A gene may be an important susceptibility factor for breast cancer risk.     

孕妇下生殖道解脲脲原体感染与妊娠结局关系的探讨

应用聚合酶链反应技术，对２１６例妊娠１２－３７周孕妇的宫颈阴道分泌物和其中１０９例有孕妇分娩时的羊水进行解脲脲原体ＤＮＡ检测，同时临床观察２１６例孕妇的妊娠结局。结果：宫颈阴道分泌物ＵＵ ＤＮＡ阳性率为４３．０６％，宫颈阴道ＵＵ ＤＮＡ阳性组对应的羊水ＵＵ检出率明显高于阴性组，两组平均孕周，平均出生体重，平均Ａｐｇａｒ评分以及胎儿窘迫，早产，剖宫产，低出生体重儿，低Ａｐｇａｒ评分和瘭生儿畸形的发五     

镫骨全切除和吸引噪声对豚鼠耳蜗功能与超微结构的影响

本实验应用耳蜗电图和扫描、透射电镜等技术观察了6组(44只)豚鼠镫骨全切除后,前庭窗开放时间的长短和听泡内使用吸引器对耳蜗功能和超微结构的影响程度.结果如下:①随前庭窗开放时间的延长、复合蜗神经动作电位(compound action potential.CAP)反应阈进行性提高,开放180min可导致底回部分外毛细胞变性或破坏;②镫骨全切除后,听泡内较长时间地(60min)应用吸引器可引起CAP明显阈移和耳蜗底回部分外毛细胞的不可逆病变;③镫骨未切除时,听泡内吸引60min,仅引起CAP阈移,但外毛细胞未见损伤.结果提示:术中长时间开放前庭窗和鼓室内应用吸引器可能是引起镫骨全切除术后感音神经性聋的因素之一,但鼓室成形术中鼓室内吸引噪声可能因其强度不够大,不足以引起术后感音神经性聋.     

Focal cerebral ischemia alters the spatio-temporal properties, but not the amount of locomotor activity in mice

Cerebral ischemia induces hyperlocomotion in gerbils, and sensorimotor and cognition dysfunctions in rodents ; however little is known about the spatio-temporal organization of locomotor activity after ischemia. In this study, we continuously （22 h） assessed the spatio-temporal organization of locomotor activity in focal cerebral ischemic mice in an open field with feeding and drinking supplies. To observe the spatio-temporal changes,     

金属支架联合立体定向适形放疗治疗肝门部胆管癌

目的评价金属支架联合立体定向适形放疗肝门部胆管癌的疗效。方法31例肝门部胆管癌患者行金属支架置入联合立体定向适形放疗,并与23例行单纯支架治疗者进行对比研究。结果联合治疗组生存时间平均为11.1个月;对照组为5.1个月,差异有显著性意义(P<0.01)。结论胆道金属支架置入联合立体定向适形放疗是不能手术肝门部胆管癌的一种有效治疗方法。     

补骨方治疗膝骨性关节炎的疗效观察

目的　探讨应用补骨方治疗膝骨关节炎的疗效。方法　临床应用补骨方和芬必得治疗老年性膝骨性关节炎 6 0例 4周 ,并比较随访疗效。结果　治疗后两组患者症状平均分值、日常活动功能障碍平均分值和总评分平均分值较治疗后显著升高 ,膝关节临床症状明显减轻 ,关节功能显著改善 ,比较具有显著性差别 (P <0 0 1)。经统计学处理 ,两组膝关节日常生活活动评分治疗前后。两组临床资料没有显著差异 (P >0 0 5 ) ,具可比性。结论　补骨方能明显改善膝骨关节炎患者的临床症状和关节功能。     

螺旋CT三维重建在鼻骨骨折中的临床应用价值

目的：探讨螺旋CT三维成像对鼻骨骨折的诊断价值。方法：应用GE Lightspeed Plus多排螺旋机扫描仪，对46例鼻外伤患者进行鼻骨横断面扫描和三维重建成像，并对检查结果进行分析。结果：46例鼻外伤患者中，9例普通X线侧位平片未发现骨折(19．6％)；CT图像均能清晰显示骨折线，其中单纯鼻骨骨折32例(69.6％)，并发上颌骨额突骨折11例(23．9%)，上颌窦骨折1例，筛窦纸样板骨折3例，鼻中隔断裂1例。结论：螺旋CT三维成像对于诊断鼻骨骨折具有重要的诊断价值。     

Is obesity a risk factor for psychopathology among adolescents?

BACKGROUND: Although several studies have documented the existence of psychopathology in obese adolescents, disagreement remains regarding the extent and nature of this psychopathology. The aim of the present study was to explore the type and frequency of psychopathology in a clinical as well as a non-clinical sample of obese adolescents, and in a normal weight control group. METHODS: The study sample consisted of a clinical study group of 30 obese adolescents, a non-clinical obese group of 30 obese adolescents, and a control group of 30 normal weight adolescents. Psychological assessment was performed using a non-structured psychiatric interview, the Child Behavior Checklist (CBCL), Children Depression Inventory (CDI), Rosenberg Self-esteem scale (SES) and the Eating Attitude Test (EAT). RESULTS: More than half of the clinical obese adolescents (16/30) had a DSM-IV diagnosis, often involving major depressive disorder (n = 10). The mean scores of anxiety-depression, social problems, social withdrawal and total problem in the CBCL scale of the clinical obese group were significantly higher than the non-clinical obese group and the normal weight control group. The mean total scores of the SES and the CDI of the clinical obese group were higher than the normal weight control group. The mean total score of EAT of the clinical obese group was significantly higher than the normal weight control group, and the mean score of EAT of the non-clinical obese group was significantly higher than the normal weight control group. CONCLUSIONS: The results support previously published reports which show a higher ratio of psychopathology (depression, behavioral problems, low-esteem) among clinical obese adolescents than among non-clinical obese adolescents. Findings provided evidence for a psychosocial at-risk population in a subgroup of obese adolescents.     

彝族儿童幽门螺杆菌感染HLA-DQA1免疫遗传学特征分析

目的研究人类白细胞抗原(HLA)DQA1基因位点上是否存在H.pylori感染的易感基因或抵抗基因，探讨免疫遗传因素在H.pylori感染中的作用。方法用聚合酶链反应-序列特异性引物(PCR-SSP)技术对用血清学试验及^13C尿素呼气实验确诊的31例H．pylori感染的彝族儿童及39例无感染儿童进行HLA．DQA1基因分型。结果感染组HLA-DQA1*0102等位基因频率明显高于对照组(14．52％vs3．85％，P=0．025，Pc=0．35)，OR=4．245(95％CI：1．097～16．428)；感染组HLA-DQA1*0302等位基因频率低于对照组(0 vs12．82％，P=0．003，Pc=0．042)，OR=1．147(95％CI：1．053-1．249)。结论在HLA-DQA1位点上，H．pflori感染的彝族儿童与对照组儿童存在免疫遗传学差异，HLA-DQA1*0102基因可能是彝族H．pylori感染的易感基因，而HLA-DQA1*0302基因则可能是抵抗基因和具有免疫抵抗作用。