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1PTEN encoding product:a marker for tumorigenesis and progression of gastric carcinoma显示文摘AIM: To detect the expression of PTEN encoding productin normal mucosa, intestinal metaplasia (IM), dysplasia andcarcinoma of the stomach, and to investigate its clinicalimplication in tumorigenesis and progression of gastriccarcinoma.METHODS: Formalin-fixed paraffin embedded specimens from184 cases of gastric carcinoma, their adjacent normal mucosa,IM and dysplasia were evaluated for PTEN protein expressionby SABC immunohistochemistry. PTEN expression wascompared with tumor stage, lymph node metastasis, Lauren'sand WHO's histological classification of gastric carcinoma.Expression of VEGF was also detected in 60 cases of gastriccarcinoma and its correlation with PTEN was concerned.RESULTS: The positive rates of PTEN protein were 100 %(102/102), 98.5 %(65/66), 66.7 % (4/6) and 47.8 %(88/184)in normal mucosa, IM, dysplasia and carcinoma of the stomach,respectively. The positive rates in dysplasia and carcinomawere lower than in normal mucosa and IM (P<0.01).Advanced gastric cancers expressed less frequent PTEN thanearly gastric cancer (42.9 % v567.6 %, P<0.01). The positiverate of PTEN protein was lower in gastric cancer with thanwithout lymph node metastasis (40.3 % v563.3 %, P<0.01).PTEN was less expressed in diffuse-type than in intestinal-type gastric cancer (41.5 % v557.8 %,P<0.05). Signet ringcell carcinoma showed the expression of PTEN at the lowestlevel (25.0 %, 7/28); less than well and moderatelydifferentiated ones (P<0.01). Expression of PTEN was notcorrelated with expression of VEGF (P>0.05).CONCLUSION: Loss or reduced expression of PTEN proteinoccures commonly in tumorigenesis and progression of gastriccarcinoma. It is suggested that PTEN can be an objective markerfor pathologically biological behaviors of gastric carcinoma.Lin Yang Li-Ge Kuang Hua-Chuan Zheng Jin-Yi Li Dong-Ying Wu Su-Min Zhang Yan Xin No.4 Lab,Cancer Institute,The First Affiliated Hospital,China Medical University,Shenyang 110001,China Ying Chen Shen Yang Gynecology & Obstetrics Hospital,Shenyang 110014,China 2003World Journal of Gastroenterology2003,9,1:127
2Deficit of mitochondria-derived ATP during oxidative stress impairs mouse MII oocyte spindles显示文摘尽管在母亲的老化和不孕的氧化应力的角色被建议了,内在的机制充分没被理解。现在的学习被设计在氧化应力下面在中期 II (MII ) 卵母细胞决定在 mitochondrial 功能和锭子稳定性之间的关系。MII 老鼠卵母细胞当面与 H2O2 被对待或渗透转变毛孔(PTP ) 的缺席块 ers cyclosporin A (CsA ) 。另外,抗氧化剂 N-acetylcysteine (NAC ) , F0/F1 synthase 禁止者 oligomycin A,线粒体 uncoupler 羰基氰化物 4-trifluoro-methoxyphenylhydrazone (FCCP ) 或加 2.5 公里 Ca2+(Th+2.5 公里 Ca2+) 的 thapsigargin 在机械学的研究被使用。卵母细胞锭子和染色体的词法分析被执行并且 mitochondrial 膜潜力(DeltaPsim ) ,细胞质的免费的钙集中([Ca2+] c ) 并且在卵母细胞以内的细胞质的 ATP 内容也是 assayed。在一时间 -- 并且 H2O2 剂量依赖者举止,锭子在卵母细胞以后被发现的 meiotic 的混乱与 H2O2 被对待,它被预告的处理与 NAC 阻止。H2O2 的管理导致了 DeltaPsim 的驱散,的增加[Ca2+] 在细胞质的 ATP 的 c 和减少铺平。到 H2O2 处理的卵母细胞的这些有害回答能被孵化前与 CsA 堵住。类似于驱散的 H2O2,两 oligomycin A 和 FCCP DeltaPsim,减少的细胞质的 ATP 内容和拆卸的 MII 卵母细胞锭子,当时高[Ca2+] c 独自没在锭子形态学上有效果。在结论,在导出线粒体的 ATP 的减少可以在氧化应力期间引起老鼠 MII 卵母细胞锭子的拆卸,大概由于 mitochondrial PTP 的开始。Xiao Zhang~(1,2,*) Xue Qing Wu~(1,3,*) Shuang Lu~(4,5,6) Ying Lu Guo~1 Xu Ma~(4,5,6) ~1Peking University First Hospital,Institute of Urology of Peking University,Beijing 100034,China ~2Reproductive and Genetic Center of Peking University First Hospital,Beijing 100034,China ~3Department of Obstetrics and Gynecology,Shanxi Medical University Second Hospital,Taiyuan 030000,China ~4Reproductive and Genetic Center of National Research Institute for Family Planning,Beijing 100038,China ~5Department of Genetics, Peking Union Medical College, Beijing 100038. China ~6 WHO Collaborative Center for Research in Human Reproduction,Beijing 100038,China 2006Cell Research2006,16,10:24
3外用人α1型基因工程干扰素治疗慢性宫颈炎673例疗效观察显示文摘1988年8月至1989年1月,本协作组使用长春生研所研制成功的二种不同剂量外用人α1型基因工程干扰素1×10~5IU/ml及1×10~6IU/ml治疗慢性宫颈炎673例,在一疗程后总有效率达84.3%及86.6%,较对照组卡那霉素及妇炎灵的66.3%及62.9%为高(P<0.005)。停药6个月后,干扰素治疗组总有效率上升至90.1%及95.7%,疗效仍高于卡那霉素组的69.5%(P<0.05)。对宫颈糜烂病例宫颈局部作拭子标本197份进行HPV—16DNA分子杂交,阳性率达41.6%,其中经干扰素治疗166例,其治疗前后的阳性率分别为41.6%及17.5%,说明干扰素对HPV—16有一定的抑制作用。推测它有可能是一种阻断宫颈癌发生的方法。Wang Dawan, et al Beijing Obstetrics and Genecology Hospital, Beijing 1990中国免疫学杂志1990,6,1:17
4Protective effects of Ligustrazine,Kakonein and Panax Notoginsenoside on the small intestine and immune organs of rats with severe acute pancreatitis显示文摘BACKGROUND:Severe acute pancreatitis (SAP) is characterized by fatal pathogenic conditions and a high mortality.It is important to study SAP complicated with multiple organ injury.In this study we compared the protective effects of three traditional Chinese medicines (Ligustrazine,Kakonein and Panax Notoginsenoside) on the small intestine and immune organs (thymus,spleen and lymph nodes) of rats with SAP and explored their mechanism of action.METHODS:One hundred forty-four rats with SAP were randomly divided into model control,Ligustrazine-treated,Kakonein-treated,and Panax Notoginsenoside-treated groups (n=36 per group).Another 36 normal rats comprised the sham-operated group.According to the different time points after operation,the experimental rats in each group were subdivided into 3-,6-and 12-hour subgroups (n=12).At various time points after operation,the mortality rate of rats and pathological changes in the small intestine and immune organs were recorded and the serum amylase levels were measured.RESULTS:Compared to the model control groups,the mortality rates in all treated groups declined and the pathological changes in the small intestine and immune tissues were relieved to different degrees.The serum amylase levels in the three treated groups were significantly lower than those in the model control group at 12 hours.The pathological severity scores for the small intestinal mucosa,thymus and spleen (at 3 and 12 hours) in the Ligustrazine-treated group,for the thymus (at 3 and 12 hours) and spleen (at 3 and 6 hours) in the Kakonein-treated group,and for the thymus (at 3 hours)and spleen (at 3 hours) in the Panax Notoginsenoside-treated group were significantly lower than those in the model control group.The pathological severity scores of the small intestinal mucosa (at 6 and 12 hours) and thymus (at 6 hours) in the Ligustrazine-treated group were significantly lower than those in the Kakonein-and Panax Notoginsenoside-treated groups.CONCLUSIONS:All the three traditional Chinese drugs significantly alleviated the pathological changes in the small intestine and immune organs of SAP rats.Ligustrazine was the most effective one among them.Xi-Ping Zhang,Jun Jiang,Qi-Hui Cheng,Qian Ye,Wei-Juan Li,Hua Zhu and Jun-Ya Shen Department of General Surgery,Department of Gynecology and Obstetrics and Central Laboratory Department,Hangzhou First People’s Hospital,Hangzhou 310006,China Zhejiang Chinese Medical University,Hangzhou 310053,China 2011Hepatobiliary & Pancreatic Diseases International2011,10,6:11
5Regulation of apoptotic signal transduction pathways by the heat shock proteins显示文摘The study about apoptotic signal transductions has become a project to reveal the molecular mechanisms of apoptosis. Heat shock proteins (hsps), which play an important role in cell growth and apoptosis, have attracted great attentions. A lot of researches have showed there is a hsps superfamily including hsp90, hsp70, hsp60 and hsp27, etc., which regulates the bio-logical behaviors of cells, particularly apoptotic signal transduction in Fas pathway, JNK/SAPK pathway and caspases pathway at different levels, partly by the function of molecular chaperone.LI Zhengyu1, ZHAO Xia1 & WEI Yuquan2 1. Department of Gynecology and Obstetrics, West China Second Hospital of Sichuan University, Chengdu 610041, China 2. Key Laboratory of Biotherapy of Human Diseases of Ministry of Education, West China Hospital of Sichuan university, Chengdu 610041, China 2004Science China(Life Sciences)2004,47,2:8
6Cyclooxygenase-2 polymorphisms and susceptibility to gastric carcinoma: A meta-analysis显示文摘AIM: To investigate the association of the cyclooxygenases-2 (COX-2) polymorphisms and susceptibility to gastric cancer (GC) by means of meta-analysis. METHODS: Publications addressing the association between polymorphisms of COX-2 and susceptibility to GC were selected from the MEDLINE, EMBASE and CBMdisc databases. Data was extracted from the studies by 2 independent reviewers. The meta-analyses were performed by RevMan 5.0.23. From these data, odds ratio (OR) with 95% confidence interval (CI) was calculated.RESULTS: Ten studies were retrieved reporting a total of 11 COX-2 polymorphisms. Carriers of -765C, -1195A, -1290G, *2430T alleles and *429TT genotype revealed increased risk for GC (OR = 1.71, 95% CI: 1.01-2.90, P = 0.05; OR = 1.58, 95% CI: 1.05-2.38, P = 0.03; OR = 1.55, 95% CI: 1.01-2.39, P = 0.05; OR = 2.62, 95% CI: 1.20-5.73, P = 0.02 and OR = 0.74, 95% CI: 0.59-0.95, P = 0.02, respectively). CONCLUSION: The -765C, -1195A, -1290G, *2430T alleles and *429TT genotype of COX-2 polymorphisms were determined a significant association with susceptibility to GC.Jia-Li Liu, Zhen-Ning Wang, Department of Surgical Oncology and General Surgery, the First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China Yuan Liang, Department of Oncology, the Shengjing Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China Xin Zhou, Department of Obstetrics and Gynecology, the Shengjing Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China Li-Li Xing, Department of Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang 110032, Liaoning Province, China 2010World Journal of Gastroenterology2010,16,43:5
7Practice bulletin #33: diagnosis and management of preeclampsia and eclampsia显示文摘ACOG Committee on Obstetric Practice 2002Obstetrics & Gynecology2002,,1:3
8Effect of IL-1βand TNF-αon the Expression of MonocyteChem otactic Protein-1 in Endom etriotic Cells显示文摘To investigate the clinical significance of monocyte chemotactic protein 1 (MCP 1) produced by endometriotic tissues, the endometriotic tissues were taken from 15 patients with endometriosis. MCP 1 mRNA and MCP 1 protein were determined by dot blot analysis and enzyme linked immunosorbent assay (ELISA) in endometriotic cells cultured with or without interleukin 1β (IL 1β, 2 μg/L), tumor necrosis factor α (TNF α, 20 g/L). After exposure to IL 1β or TNF α, the expression of MCP 1 mRNA in the endometriotic cells (8.635± 0.826, 7.031±0.970, respectively) were significantly higher than that in the control group (4.482±0.435, P <0.05); The expression of MCP 1 protein in IL 1β and TNF α group was 4.52±0.09 μg/L,2.87±0.27 μg/L, respectively, which were significantly higher than 1.74±0.16 μg/L in control ( P <0.01). The results suggested that IL 1β and TNF α could up regulate the expression of MCP 1 in endometriotic cells, which might be related to the development of endometriosis.GAO Ying LUO Lilan HE Fuxian Department of Obstetrics and Gynecology, Xiehe Hospital, Tongji Medical University, Wuhan 430022 1999Journal of Huazhong University of Science and Technology(Medical Sciences)1999,19,3:3
9CSOG MFM Committee Guideline: Management of Hepatitis B During Pregnancy and Prevention of Mother-to-Child Transmission of Hepatitis B Virus (2020)显示文摘Mother-to-child transmission (MTCT) of hepatitis B virus (HBV) is the main cause of chronic hepatitis B. The prevention of MTCT plays a critical role in control chronic hepatitis B. The main purpose of the present clinical guidelines is to aid healthcare providers in managing pregnant women with positive HBsAg and in preventing MTCT of HBV. We recommend: (1) all pregnant women require prenatal screen for hepatitis B serological markers;(2) newborn infants of mothers with negative hepatitis B surface (HBsAg) require administration of hepatitis B vaccine on a 0, 1, and 6 month-schedule;(3) newborn infants of mothers with positive HBsAg need hepatitis B immunoglobulin (HBIG) and birth dose vaccine within 12 hours (the sooner the better) after birth, followed by injection of the second and third dose of hepatitis B vaccine at the age of one and six months respectively;(4) in preterm neonates or neonates with poor health conditions born to HBsAg-positive mothers, the immunoprophylaxis measures should be appropriately taken;(5) to further reduce MTCT of HBV, pregnant women with HBV DNA levels >2×105 IU/mL or positive hepatitis B e antigen may receive oral antivirals, starting from 28 to 32 weeks of gestation and discontinuing the drug on the delivery day;(6) cesarean section is not recommended to reduce MTCT of HBV;(7) breastfeeding is recommended in infants of HBsAg-positive mothers, regardless of maternally positive hepatitis B e antigen, maternal nipple injury or bleeding, oral mucosal injury in neonates or infants;(8) breastfeeding is recommended in infants born to HBsAg-positive mothers who require continuation of antiviral therapy after delivery, and the infants should be followed up to observe whether adverse effects develop;and (9) the infants born to HBsAg-positive mothers should be tested for hepatitis B serological markers at the age of 7-12 months, and those who are negative for HBsAg and anti-HBs should receive three doses of hepatitis B vaccine on the 0, 1, and 6 month-schedule as soon as possible.Maternal-Fetal Medicine Committee,Chinese Society of Obstetrics and Gynecology,Chinese Medical Association Chinese Society of Perinatal Medicine,Chinese Medical Association Chinese Academy of Maternal-Fetal Medicine Yi-Hua Zhou Yali Hu Xinghui Liu Huixia Yang 2021Maternal-Fetal Medicine2021,3,1:3
10Proteomics profile changes in cisplatin-treated human ovarian cancer cell strain显示文摘To compare the alterations in proteomes between cisplatin-treated and -untreated human ovarian cancer SKOV3 cells, and to explore the feasibility of proteomics in research about antitumor mechanisms of agents, SKOV3 cells were exposed to cisplatin (6 μg/mL) for 6 h. Then, the cells were collected and solubilized and global proteins were extracted by lysis buffer; two-dimensional electrophoresis was conducted with the IPG readystrips as carriers; the gels were stained with Coomassie blue and alterations between gels were compared by PDQuest. Eventually, 11 spots with significant differences were selected and excised and the proteins were identified by PMF and MS/MS analysis. The results revealed that exposure to cisplatin could notably increase expressions of some proteins, such as tropomyosin family, actin family, trio-sephosphate isomerase family, and HSP60, etc.; while expressions of some other proteins de-creased, such as enolase family, etc. Those proteins were involved in cellular energy metabolism, transformation, apoptosis and morphologic maintenance, which suggested that alterations of those physiological processes might be involved in anti-tumor mechanism of cisplatin.LI Zhengyu1, ZHAO Xia1, YANG Jinliang2 & WEI Yuquan2 1. Department of Gynecology and Obstetrics, West China Second Hospital of Sichuan University, Chengdu 610041, China 2. National Key Laboratory of Biotherapy of Human Diseases, West China Hospital of Sichuan University, Chengdu 610041, China 2005Science China(Life Sciences)2005,48,6:3
11Derivation and characterization of human embryonic stem cell lines from poor quality embryos显示文摘Poor quality embryos discarded from in vitro fertilization (IVF) laboratories are good sources for deriving human embryonic stem cell (hESC) lines. In this study, 166 poor quality embryos donated from IVF centers on day 3 were cultured in a blastocyst medium for 2 days, and 32 early blastocysts were further cultured in a blastocyst optimum culture medium for additional 2 days so that the inner cell masses (ICMs) could be identified and isolated easily. The ICMs of 17 blastocysts were isolated by a mechanical method, while those of the other 15 blastocysts were isolated by immunosurgery. All isolated ICMs were inoculated onto a feeder layer for subcultivation. The rates of ICM at- tachment, primary ICM colony formation and the efficiency of hESC derivation were similar between the ICMs isolated by the two methods (P>0.05). As a result, four new hESC lines were established. Three cell lines had normal karyotypes and one had an unbalanced Robertsonian translocation. All cell lines showed normal hESC characteristics and had the differentiation ability. In conclusion, we established a stable and effective method for hESC isolation and culture, and it was confirmed that the mechanical isolation was an effective method to isolate ICMs from poor embryos. These results further indicate that hESC lines can be derived from poor quality embryos discarded by IVF laboratories.Weiqiang Liu, Yifei Yin, Xiaolin Long, Yumei Luo, Yonghua Jiang, Wenhong Zhang, Hongzi Du, Shaoying Li, Yuhong Zheng, Qing Li, Xinjie Chen, Baoping Liao, Guohong Xiao, Weihua Wang, Xiaofang Sun Guangzhou Key Laboratory of Reproductive and Genetics Institute of Gynecology and Obstetrics, The Third Affiliated Hospital of Guangzhou Medical College, Guangzhou 510150, China 2009Journal of Genetics and Genomics2009,36,4:3
12A Summary of Chinese Expert Consensus on Fetal Growth Restriction (An Update on the 2019 Version)显示文摘Fetal growth restriction(FGR)is a common complication of pregnancy associated with higher rates of perinatal mortality and morbidity,as well as a variety of long-term adverse outcomes.To standardize the clinical practice for the management of FGR in China,Fetal Medicine Subgroup,Chinese Society of Perinatal Medicine,Chinese Medical Association and Maternal-Fetal Medicine Committee,Chinese Society of Obstetrics and Gynecology,Chinese Medical Association organized an expert committee to provide official consensus-based recommendations on FGR.We evaluated the evidence provided by relevant high-quality literature,performed a three-round Delphi study and organized face-to-face meetings with experts from multidisciplinary backgrounds.The consensus includes the definition,prenatal screening,prevention,diagnosis,monitoring and management of FGR.Fetal Medicine Subgroup,Chinese Society of Perinatal Medicine,Chinese Medical Association Maternal-Fetal Medicine Committee,Chinese Society of Obstetrics and Gynecology,Chinese Medical Association Luming Sun Yali Hu Hongbo Qi 2022Maternal-Fetal Medicine2022,4,3:2
13Antisense Oligodeoxynucleotide Inhibits Expression of Re-com binantPorcine Follicle-Stim ulating Horm one Receptor显示文摘To assess the role of follicle stimulating hormone receptor(FSHR) gene expression in regulating expression of FSHR protein in the plasma membrane, the effects of a porcine FSHR cDNA antisense oligodeoxynucleotide (ODN) on FSHR mRNA levels and 125 I FSH binding were determined in Chinese hamster ovary cells expression recombinant porcine FSHR (pFSHR CHO cells). An 18 mer phosphorothioate endcapped antisense ODN that corresponded to the region surrounding the translation initiation codon of the porcine FSHR cDNA was synthesized. An 18 mer nonsense sequence of identical nucleotide composition, which had little homology to known DNA sequences, was synthesized for use as a control. pFSHR CHO cells were cultured in 24 well plates (10 5 cells/well) in the absence or presence of 1 20 μmol/L antisense or nonsense ODN for 24 h and then assayed for porcine FSHR mRNA, using quantitative reverse transcription and competitive polymerase chain reaction, and for 125 I FSH binding activity. Treatment with 10 μmol/L antisense ODN caused a paradoxical increase in porcine FSHR mRNA from 0.89±0.06 to 1.64±0.08 ng/mg total RNA ( P <0.05). Transfection with lipofectamine and 0.33 μmol/L antisense ODN caused an increase in porcine mRNA from 0.95±0.08 to 1.53±0.07 ng/mg total RAN. This was probably due to upregulation of mRNA synthesis resulting from inhibition of porcine FSHR protein translation. The nonsense ODN had no effect on porcine FSHR mRNA. Antisense, but not nonsense, ODN (10 μmol/L) inhibited membrane binding of 125 I FSH by 13.6± 0.8 % ( P <0.05) in 24 h. Treatment of cells with antisense ODN (10 μmol/L) for 48 h resulted in a 76±1.5 % ( P <0.05) inhibition of 125 I FSH binding. In contrast, transfection with lipofectamine and 0.33 μmol/L antisense ODN at 0 h caused a 76.1±1.3 % ( P <0.05) reduction in binding within 24 h. Binding had returned to 52.3±2.3 % ( P < 0.05) of normal by 48 h. These results indicate that an antisense ODN corresponding to the region of the translation start site of the porcine FSHR cDNA is an effective specific inhibitor of porcine FSHR synthesis and that inhibition of receptor synthesis causes a decrease in functional membrane bound FSHR.ZHU Changhong 1, Mark D. Nixon 2, WANG Yifang 1, Andrew R. LaBarbera 3 1 Center of Reproductive Medicine, Tongji Hospital, Tongji Medical University, Wuhan 430030 2 Department of Obstetrics and Gynecology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267 0526 3 Department of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267 0526 1999Journal of Huazhong University of Science and Technology(Medical Sciences)1999,19,3:2
14Phylogeographic analysis of human papillomavirus 58显示文摘Human papillomavirus 58 (HPV58) is one type of HPV with high risk of causing cervical cancer. Unusually high prevalence of HPV58 has been reported in Asia, Africa and some other areas. However, due to the scattered distribution of global data, in addition to the lack of data of some HPV58 high-incidence nations and regions, like China's Mainland, a comprehensive analysis of the global geographical distribution of HPV58 remains blank so far. In this study, HPV58 from the human cervical cancer tissue was detected in China's Mainland, and 14 new HPV58-E6/L1 gene sequences were obtained. Moreover, phylogeographic analysis has been conducted combining the HPV58 sequences that have been deposited in GenBank since 1985. The study result shows that the sequences detected from the Shanghai, Jiangsu and Sichuan areas are homologous with those found in the past from Hong Kong and Xi'an, China, as well as Japan and other Southeast Asian areas. Furthermore, Western Africa is considered to be the 'root' source of the HPV58 variant, while China's Mainland and Southeast Asia are 'transit points' and the new sources of HPV58 after receiving the isolates from the 'root' source; like HPV16 and HPV18, the HPV58 might also be one of the major HPV types associated with the development and spread of cervical cancer.LI YanYun1, LI ZuoFeng2, HE YiFeng1, KANG Yu1, ZHANG XiaoYan1, CHENG MingJun1, ZHONG Yang2, 3· & XU CongJian1· 1 Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China 2 Shanghai Bioinformation Research Center, Shanghai 200235, China 3 School of Life Sciences, Fudan University, Shanghai 200433, China 2009Science China(Life Sciences)2009,52,12:2
15Neural precursors derived from human embryonic stem cells显示文摘Human embryonic stem (hES) cells provide a promising supply of specific cell types for transplantation therapy. We presented here the method to induce differentiation of purified neural precursors from hES cells. hES cells (Line PKU-1 and Line PKU-2) were cultured in sus- pension in bacteriological Petri dishes, which differentiated into cystic embryoid bodies (EBs). The EBs were then cultured in N2 medium containing bFGF in poly-L-lysine-coated tissue culture dishes for two weeks. The central, small cells with 2―3 short processes of the spreading out- growth were isolated mechanically and replated. The resulting neurospheres were cultured in suspension for 10 days, then dissociated into single cell suspension with a Pasteur pipette and plated. Cells grew vigorously in an attached way and were passed every 4―5 days. Almost all the cells were proved nestin positive by immunostaining. Following withdrawal of bFGF, they differentiated into neurons expressing β-tubulin isotypeIII, GABA, serotonin and synaptophysin. Through induction of PDGF-AA, they differentiated into astrocytes expressing GFAP and oli- godendrocytes expressing O4. The results showed that hES cells can differentiate into typical neural precursors expressing the specific marker nestin and capable of generating all three cell types of the central nervous system (CNS) in vitro.Peng Hongmei 1,2 & Chen Gui’an 1 1. Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100083, China 2. Department of Obstetrics and Gynecology, General Hospital of PLA, Beijing 100853, China 2005Science China(Life Sciences)2005,48,3:2
16Expression of the human fast-twitch skeletal muscle troponin I cDNA in a human ovarian carcinoma suppresses tumor growth显示文摘To explore the efficiency and mechanism of ovarian carcinoma gene therapy with the human fast-twitch skeletal muscle troponin I gene (TnI-fast), TnI-fast cDNA was transferred into human ovarian adeno-carcinoma cell-line SK-OV-3. In vitro, the cell growth and cell cycle of TnI-fast-, vector-, and mock-transfected cells were determined by MTT and flow cytometry assay, respectively. The condi-tioned media of TnI-fast-, vector-, and mock-transfected SK-OV-3 cells were collected, and the cell pro-liferation inhibiting rates of human umbilical cord venous endothelial cells (HUVECs) by the three conditioned media were assayed. All the three cell lines were implanted into node mice, and the tumor growth, cell apoptosis, angiogenesis, and expression of TnI-fast were observed or analyzed, respec-tively. In vitro, expression of TnI-fast protein had no inhibiting effect on the growth of the dominant and stable transfectant cells, but endothelium, when compared with vector-transfected cells and nontrans-fected parental SK-OV-3 cells. Implantation of stable clone expressing TnI-fast in the female BALB/c nude mice inhibits primary tumor growth by an average of 73%. The nude mice grafts expressing TnI-fast exhibit a significant decrease of microvascular density, a higher rate of tumor cells apoptosis and a comparable proliferation rate as control. Our study, to our knowledge, shows the slowed down growth of the primary ovarian carcinoma, suggested that grafts were self-inhibitory by halting angio-genesis. Our data might also provide a novel useful strategy for cancer therapy by antiangiogenic gene therapy with a specific angiogenesis inhibitor TnI-fast.XIONG GuangWu1,3, YANG Li2, WEI YuQuan2, WANG ShiLang1, TIAN Ling2, LEI Song2, KAN Bing2 & MAO YongQiu2 1 Department of Obstetrics and Gynecology, Second Huaxi Hospital, Sichuan University, Chengdu 610041, China 2 State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China 3 Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100083, China 2007Science China(Life Sciences)2007,50,1:2
17指南儿童及青少年抑郁的诊断和管理:NICE指南更新概要显示文摘本文是英国医学杂志(TheBMJ)最新指南系列文章之一,新指南基于现有的最佳证据编写;着重解读对临床实践重要的建议,特别是存在不确定和争议的部分。Kathryn Hopkins technical analyst Paul Crosland health economist Nicole Elliott associate director Susan Bewley committee chair and professor in complex obstetrics 崔轶 2015英国医学杂志中文版2015,0,8:2
18The number and cytotoxicity and the expression of cytotoxicity-related molecules in peripheral natural killer(NK)cells do not predict the repeated implantation failure(RIF)for the in vitro fertilization patients显示文摘Natural killer(NK)cells are thought to play a key role in the successful establishment of a pregnancy by facilitating immunological adaptation of the semi-allogeneic developing embryo.The aim of this study was to explore the cell number,immunophenotypic characteristics,and activities of peripheral blood NK cells in women with repeated implantation failure(RIF).Peripheral blood was obtained from 27 women with RIF and 11 healthy,fertile controls during the middle luteal phase of the menstrual cycle.CD3^-CD56^+NK cells were quantified and analyzed by flow cytometry for the expression of cytolytic molecules(granzyme B,granulysin,and perforin)as well as cell surface receptors responsible for NK cell activation or inhibition(NKG2D,NKp30,NKp46,CD158a,CD158b).NK cytotoxicity was measured at three effector-to-target cell ratios.Women with RIF and fertile controls did not differ significantly in the percentage of circulating CD3CD56t NK cells,or in the proportions of these cells that expressed granzyme B,granulysin,or perforin.The two groups also did not differ significantly in the proportions of NK cells expressing the receptors NKG2D,NKp30,NKp46,CD158a or CD158b.General linear model analysis showed that NK cytotoxicity increased with effector-to-target cell ratio.However,NK cytotoxicity did not differ significantly between patients with RIF and fertile controls.These results suggest that RIF is not associated with significant alterations in the number or function of peripheral blood NK cells.Hongzhan Zhang Chunyu Huang Xian Chen Longfei Li Su Liu Yuye Li Yongnu Zhang Yong Zeng Lina HuDepartment of Obstetrics and Gynecology The Second Affiliated Hospital of Chongqing Medical 2020Genes & Diseases2020,7,2:2
19Changes of Serum Follicular Stimulating Hormone,Luteinizing Hormone and Follicular Sizes during Electroacupuncture for Induction of显示文摘ChangesofSerumFollicularStimulatingHormone,LuteinizingHormoneandFollicularSizesduringElectroacupunctureforInductionofOvulatio...Yu Jin (俞瑾) Zheng Huai-mei (郑怀美) and Bing Sheng-min (邴圣民)(Obstetrical and Gynecological Hospital, Shanghai Medical UniversityShanghai) (200011) 1995Chinese Journal of Integrative Medicine1995,1,2:2
20379:Management of delivery of a newborn with meconium-stained amniotic fluid显示文摘Committee on Obstetric Practice American College of Opinion No 2007Obstet Gynecol2007,110,3:1
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