首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   44篇
  免费   1篇
妇产科学   10篇
基础医学   2篇
内科学   1篇
外科学   3篇
综合类   14篇
预防医学   13篇
药学   1篇
中国医学   1篇
  2022年   1篇
  2017年   2篇
  2015年   1篇
  2014年   2篇
  2013年   4篇
  2012年   3篇
  2011年   12篇
  2010年   4篇
  2008年   3篇
  2007年   3篇
  2004年   2篇
  2003年   3篇
  2002年   2篇
  2001年   1篇
  2000年   2篇
排序方式: 共有45条查询结果,搜索用时 218 毫秒
1.
目的介绍1例行体外受精-胚胎移植(in vitro fertilization and embryo transfer,IVF-ET)、出现宫角妊娠合并宫腔粘连并成功活产的病例。方法对本院1例重度宫腔粘连分解术后行IVF-ET病例发生宫角妊娠合并宫腔粘连的临床资料进行分析,并对相关文献进行系统性回顾。结果该病例于孕36+3周行子宫下段剖宫产术,成功活产一男婴。结论宫角妊娠是可能危及生命的妇产科急症,但对于妊娠困难的患者,严密监测及期待治疗可获得良好的妊娠结局。  相似文献   
2.
目的探讨人胎盘滋养层细胞(以下简称滋养细胞)感染人巨细胞病毒(HCMV)后生物学特性改变及意义。方法采用复合酶消化法及Pereoll密度梯度离心法分离纯化、培养人滋养细胞;采用HCMV AD169病毒感染滋养细胞,检测不同时间点病毒复制情况和细胞凋亡率。结果HCMV感染滋养细胞后快速复制,24—72h复制速度减慢;感染HCMV的滋养细胞凋亡率(34.68%±3.14%)明显高于未感染HCMV者(15.32%±2.34%),P〈0.05.结论HCMV感染滋养细胞具有早期快速复制的特点,可导致滋养层细胞在感染早期加速凋亡。  相似文献   
3.
ADAMTS-1在排卵过程中的作用与调控   总被引:1,自引:0,他引:1  
ADAMTS-1是一个新发现的金属蛋白酶ADAMTS(adisintegrin and metalloprotease with thrombospondin type 1 motif)家族的一员。排卵时ADAMTS-1在卵巢颗粒细胞层的转录活性明显增强,并且其转录活性的增强依赖于黄体生成素(1uteinizing hormone,LH)峰值的出现和孕激素受体(progesterone receptor,PR)的表达,孕激素受体基因敲除小鼠(PRKO小鼠)卵巢局部ADAMTS-1表达显著下降,有明显的排卵障碍,提示:ADAMTS-1是PR的直接下游靶基因,可能是LH和P(PR)作用下诱导排卵的关键蛋白水解酶。  相似文献   
4.
The debate exists whether or not gonadotropin-releasing hormone(GnRH) analogs used in controlled ovarian hyperstimulation(COH) impair endometrial receptivity.Homeobox A11(Hoxa11),Meis homeobox 1(Meis1),cadherin 1(Cdh1),and catenin beta 1(Ctnnb1) are well known to be involved in successful implantation.In this study,the endometrial expression of Hoxa11,Meis1,Cdh1,and Ctnnb1 during the peri-implantation period was investigated in an in vitro fertilization(IVF) mouse model by real-time RT-PCR and Western blot to evaluate the relationship between Hoxa11,Meis1,Cdh1,and Ctnnb1 expression and the impact of the COH on endometrial receptivity.The mimic COH protocols included GnRH agonist plus human menopausal gonadotropin(HMG)(GnRH agonist group),GnRH antagonist plus HMG(GnRH antagonist group),and HMG alone(HMG group).The expression levels of Hoxa11,Meis1,Cdh1,and Ctnnb1 mRNA and protein were decreased in all of the COH groups.The expression levels of Hoxa11 and Ctnnb1 were the lowest in the GnRH agonist group,and those of Meis1 and Cdh1 were lower in the GnRH analog groups than the HMG group.There were positive correlations between the expression of Hoxa11 and Ctnnb1,as well as the expression of Meis1 and Cdh1 among all the groups.In conclusion,the COH protocols,particularly with GnRH analogs,suppressed Hoxa11,Meis1,Ctnnb1 and Cdh1 expression,in mouse endometrium during the peri-implantation period.Our data reveal a novel molecular mechanism by which the COH protocols might impair endometrial receptivity.  相似文献   
5.
足月妊娠伴自发性卵巢过度刺激综合征1例   总被引:1,自引:1,他引:0  
目的:报道1例自然妊娠合并自发性卵巢过度刺激综合征(sOHSS)病例。方法:回顾性分析我院1例自然妊娠合并sOHSS患者的临床资料,并复习相关文献。结果:该患者于孕39周行子宫下段剖宫产术,同时行双侧卵巢楔形切除术+双侧卵巢打孔术。术中快速病理检查及术后常规病理检查结果示双侧卵巢黄素化囊肿。术后患者双侧卵巢迅速恢复正常。最终诊断为妊娠合并sOHSS。结论:妇产科医生需对sOHSS有充分的认识,需与卵巢肿瘤性疾病进行鉴别,以免因误诊而采取不适当的治疗。  相似文献   
6.
目的探讨输卵管积水以及因输卵管积水不孕腹腔镜下处理输卵管对体外授精-胚胎移植(in votro fertilization and embryo transfer,IVF-ET)结局的影响。方法 2006年3月至2009年3月于华中科技大学同济医学院附属同济医院生殖中心,选择双侧输卵管切除或离断术后行IVF-ET77例为积水处理组,同期年龄匹配的双侧输卵管积水未处理直接行IVF-ET78例为积水组,双侧输卵管近端梗阻且无积水,直接行IVF-ET80例为近端梗阻组。结果 (1)三组患者的年龄、不孕年限等一般临床指标比较差异均无统计学意义(P>0.05)。(2)积水组的新鲜妊娠率和活产分娩率明显比积水处理组以及近端梗阻组低(P<0.05),异位妊娠率却大大增高(P<0.05)。(3)积水处理组内处理输卵管前后行IVF-ET,各相关指标比较差异均无统计学意义(P>0.05),但积水处理后妊娠率明显提高。结论输卵管积水降低了IVF-ET的新鲜妊娠率和活产分娩率,并且增加了异位妊娠的发生,而IVF-ET前处理输卵管积水并未影响卵巢功能,同时可能提高妊娠率、减少不良妊娠结局。  相似文献   
7.
The prevalence of human papilloma virus (HPV)-16 in patients with cervical cancer,the physical status of HPV-16 in patients with cervical lesions,and the role of HPV-16 integration in cervi-cal carcinogenesis were investigated.HPV genotyping was performed by using PCR approach with the primer GP5+/GP6+ and type-specific primer on biopsy specimens taken operatively from 198 women.Multiple PCR was done to detect physical status of HPV-16 in a series of cervical liquid-based cytology samples and biopsy specimens obtained from different cervical lesions with HPV-16 infection,includ-ing 112 specimens with cervical cancer,151 specimens with CINⅠ,246 specimens with CINⅡ and 120 specimens with CINⅢ.The results showed that there were 112 cervical cancer samples (56.57% of total cervical cancer patients) with HPV-16 infection.The frequency of HPV-16 pure integration was 65.18% (73/112),56.57% (47/120),23.58% (58/246) and 7.95% (12/151) in cervical cancer,CINⅢ,CINⅡand CINⅠ patients respectively.In situ hybridization was performed on some paraffin-embedded sections of CINⅡ,CINⅢ and cervical cancer to verify the physical status of HPV-16 infection.Sig-nificant difference was observed between cervical cancer and CINⅠ,CINⅡ,CINⅢ in the frequency of HPV-16 integration (P<0.01).It is suggested that HPV-16 is the most prevalent type and is associated with cervical cancer.In the case of HPV-16 infection there are close associations between the severity of cervical lesions and the frequency of HPV-16 integration.The application of testing HPV genotyping and physical status based on detection of HC-Ⅱ HPV DNA would be in favor of predicting the progno-sis of cervical precancerosis and enhancing the screening accuracy of cervical cancer.  相似文献   
8.
多囊卵巢综合征(polycystic ovary syndrome, PCOS)是最常见的导致排卵障碍性不孕症的原因。对于PCOS患者,助孕方法有很多种,主要包括:改变生活方式、胰岛素增敏剂、选择性雌激素受体拮抗剂、芳香化酶抑制剂、促性腺激素、腹腔镜卵巢打孔以及辅助生殖技术等。这些方法的作用机制、适用范围各不相同,各有优缺点。该文就多囊卵巢综合征不孕妇女助孕时机与助孕方式选择做一阐述。  相似文献   
9.
目的 探讨非嵌合型克氏综合征患者生育遗传学意义后代的可行性.方法 1例就诊于华中科技大学同济医学院附属同济医院的男性患者,年龄29岁,多次精液分析提示无精子,查体双侧睾丸体积小,质硬,约2 ml.性激素水平:卵泡刺激素37.34 IU/L,黄体生成素15.69 IU/L,明显升高;睾酮2.13 ng/ml,稍微偏低.查染色体核型为47,XXY,Y染色体微缺失正常,确诊为非嵌合型克氏综合征.行显微睾丸取精术,同时配合女方取卵后行卵细胞胞质内单精子注射(intracytoplasmic sperm injection, ICSI),随访1个月,观察患者术后并发症及其配偶妊娠情况.结果 显微睾丸取精术中找到少量活动精子,次日女方取卵后行ICSI,3 d后移植2枚新鲜胚胎.术后患者未出现阴囊血肿、感染等并发症,术后随访1个月患者睾酮水平较术前偏低,但性功能未受到影响.女方移植后2周查血HCG,为801 mIU/ml;移植后4周超声提示宫内早孕,单胎,胚胎存活.结论 非嵌合型克氏综合征患者可通过显微睾丸取精术获取精子,同时配合ICSI技术,生育自己遗传学意义的后代.  相似文献   
10.
To study the effects of mouse cytomegalovirus (MCMV) on the in vitro maturation, fertilization, cleavage and blastula formation of mouse oocytes, the immature oocytes were infected in vitro by MCMVs of different dosages (100 TCID50, 10 TCID50 and 1 TCID50). The oocytes were then observed for in vitro maturation, fertilization, cleavage and blastula formation and the ultrastructural changes after the culture with the viruses. Our results showed that no significant differences were found in IVM, IVF, cleavage and blastula formation among the groups treated with of virus of various dosages. And ultrastructural abnormality was observed in the oocytes treated by 100 TCID50 of viruses. It is concluded that MCMV did not have any conspicuous effects on IVM, IVF, cleavage and blastula formation of murine immature oocytes.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号