AZF deletion in patients with azoospermia and Oligozoospermia

AZF deletion in patients with azoospermia and Oligozoospermia     

Laparoscopic hepatic left lateral Iobectomy combined with fiber choledochoscopic exploration of the common bile duct and traditional open operation

AIM:To investigate the possibilities and advantages of laparoscopic hepatic left lateral Iobectomy combined with fiber choledochoscopic exploration of the common bile duct compaired with traditional open operation.METHODS:Laparoscopic hepatic left lateral Iobectomy combined with fiber choledochoscopic exploration of the common bile duct and traditional open operation were performed in two groups of patients who had gallstones in the left lobe of liver and in the common bile duct.The hospitalization time,hospitalization costs,operation time,operative complications and post-operative liver functions of the two groups of patients were studied.RESULTS:The operation time and post-operative liver functions of the two groups of patients had no significant differences,while the hospitalization time,hospitalization costs and operative complications of the laparoscopic hepatic left lateral Iobectomy combined with fiber choledochoscopic exploration in the common bile duct group were significantly lower than those in the traditional open operation group.CONCLUSION:For patients with gallstones in the left lobe of liver and in the common bile duct,laparoscopic hepatic left lateral Iobectomy combined with fiber choledochoscopic exploration of the common bile duct can significantly shorten the hospitalization time,reduce the hospitalization costs and the post-operative complications,without prolonging the operation time and bringing about more liver function damages compared with traditional open operation.This kind of operation has more advantages than traditional open operation.     

2018年江西省慢性丝虫病患者现况调查

目的 掌握江西省现存慢性丝虫病患者情况,为今后加强患者关怀照料工作提供依据.方法 2018年对江西省原丝虫病流行区的在册慢性丝虫病患者进行个案随访调查,并通过线索调查搜索遗漏患者,对各流行区慢性丝虫病患者关怀照料工作进行调查.结果 2018年,江西省尚存慢性丝虫病患者802例,分布在56个县(市、区).患者男女性别比为...     

多光子激光扫描成像技术对活细胞内淀粉样前体蛋白裂解和β-淀粉样蛋白生成的观察(英文)

目的在活细胞内探究淀粉样前体蛋白(amyloid precursor protein,APP)的裂解和p一淀粉样蛋白(amyloid beta,Aβ)的生成机制。方法利用PCR扩增CFP(编码蓝色荧光蛋白),YFP(编码黄色荧光蛋白)和C99(编码APP最后99个氨基酸)三片段。含有54个碱基(编码APP中间18个氨基酸)的片段54bp由生物公司合成。CFP,YFP,54bp和C99四个片段连入载体质粒pcDNA3.0得到重组质粒pcDNA3.0-CFP-54bp-YFP和pcDNA3.0-CFP-54bp-YFP- C99。将这两个重组质粒分别瞬时转染SH-SY5Y细胞。利用多光子激光扫描显微镜观察融合基因的表达,荧光共振能量转移(fluorescence resonance energy transfer,FRET)检测APP的β裂解。免疫细胞化学和多光了激光扫描显微镜观察Aβ的生成。MTT检测转染细胞活性。结果(1)限制性内切酶双酶切消化和测序分析鉴定重组质粒序列完全正确。(2)转染细胞内可以观察剑蓝色平和黄色荧光。(3)在pcDNA3.0-CFP-54bp-YFP转染细胞中存在FRET现象;在pcDNA3.0-CFP-54bp-YFP-C99转染细胞中观察不到FRET现象。(4)免疫细胞化学和多光子激光扫描显微镜观察到在pcDNA3.0-CFP-54bp-YFP-C99转染的细胞中有Aβ的牛成。(5)Aβ的沉积广泛分布于细胞内。(6)随着Aβ在细胞内的产生和聚集,细胞的活性逐步下降。结论C99对于APP的β裂解非常重要。早期Aβ首先在细胞内生成并在细胞内形成广泛沉秋。细咆内聚集的Aβ会影响细胞活性,带来不利结果。     

Altered expression and distribution of zinc transporters in APP/PS1 transgenic mouse brain

Pathological accumulation of beta-amyloid peptide (Abeta) is an early and common feature of Alzheimer's disease (AD). An increased zinc concentration can initiate the deposition of Abeta. The present study aimed to study the expression and distribution patterns of six members of the zinc transporter (ZnT) family, ZnT1, ZnT3, ZnT4, ZnT5, ZnT6, and ZnT7, in the APPswe/PS1dE9 transgenic mouse brain. Our results demonstrated a statistically significant (P<0.05) increase of ZnT1, ZnT3, ZnT4, ZnT6, and ZnT7 in both hippocampus and neo-cortex using Western blot method and an abundant distribution of zinc ions in the plaques and amyloid angiopathic vessels using immersion autometallography. Furthermore, all ZnT immunoreactions were detected in most amyloid plaques and amyloid angiopathic vessels. ZnT1 and ZnT4 were extensively expressed in all parts of the plaques. ZnT3, ZnT5, and ZnT6 were expressed most prominently in the degenerating neurites in the peripheral part of the plaques, while ZnT7 was present in the core of the plaques. The amyloid angiopathic vessels showed a strong ZnT3 immunoreactivity. These results might suggest multiple roles of ZnTs in the deposition and organization of the Abeta composition.     

延胡索中季铵生物碱的高分辨基质辅助激光解吸电离质谱研究

目的：研究中药中季铵生物碱的基质辅助激光解吸电离质谱行为。方法：以延胡索为例，采用2，5-二羟基苯甲酸为基质，以样品和基质混合均匀点样，直接分析中药生物碱提取物；利用高分辨质谱数据确定生物碱化合物的元素组成。结果：从延胡索中检出并鉴定了去氢紫堇碱等5种季铵生物碱。结论：基质辅助激光解吸电离质谱为中药中季铵生物碱提供了一种快速分析方法。     

HSP70-肿瘤肽复合物的纯化及其对肝癌细胞株HepG-2增殖的作用

目的:应用快速蛋白液相色谱(FPLC)系统从肝癌组织中分离和纯4EHSP70-肽复合物,并研究其对肝癌细胞系HepG-2增殖的影响．方法:将组织进行匀浆、高速离心提取总蛋白后依次进行ConA-Sepharose亲和层析和 DEAE-Sephacel子交换层析分离纯化,所得蛋白经SDS-聚丙烯酰胺凝胶电泳和Western blot进行蛋白分子质量及性质鉴定,Bradford 法测定蛋白浓度;利用MTT方法检测HSP70- 肽复合物对HepG-2细胞增长的情况．结果:分离、纯化得到的蛋白经SDS-聚丙烯酰胺凝胶电泳、考马斯量蓝鉴定为单一带, 分子质量为70 kDa;Western blot结果证实为 HSP70,每10 g组织最终获得1．5 mg的HSP70; HSP70刺激组12,48,72 h与对照组的A值之间有显著差异(0．1 mg／L:t=-0．2500,P=0．00; t=-0．1777,P=0．001:t=-0．3094,P=0．001; 0．5 mg／L:t=-0．2878,P=0．00;t=-0．2044,P= 0．00;t=-0．3285,P=0．00;1 mg／L:t=-0．3118, P=0．00;t=-0．2592,P=0．00;t=-0．1994, P=0．025;5 mg／L:t=-0．4007,P=0．00;t= -0．1302,P=0．016;t=-0．2537,P=0．005),细胞存活率明显高于对照组(P<0．01)．结论:使用本分离纯化方法可获得高纯度 HSP70肽复合物;HSP70肽复合物可以促进 HepG-2细胞的生长．     

种痘水疱病样皮肤T细胞淋巴瘤1例报道及文献复习

目的：探讨种痘水疱病样皮肤T细胞淋巴瘤的诊断与治疗,提高对该病的认识。方法：对1例种痘水疱病样皮肤T细胞淋巴瘤患儿的临床表现、辅助检查、诊疗过程进行分析,并复习相关文献。结果：该患儿主要表现为皮疹、发热、淋巴结肿大。皮疹呈多形性,表现为水肿性红斑、水疱、结痂、坏死及凹陷瘢痕,冬轻夏重,主要累及面部和四肢。EB（Epstein-Barr）病毒IgM抗体阳性。组织病理示皮肤真皮脂膜组织局灶性淋巴细胞浸润,以血管周围为主,免疫组化CD3 (+)、 CD43 (+)、 CD20 (-)、pax-5 (-)、TIA (+)、CD5 (+)、 CD8 (+)、 Granmye (+)、 CD4 (-)。激素治疗后病情缓解。结论：种痘水疱病样皮肤T细胞淋巴瘤的临床表现独特,确诊主要靠病损部位组织病理活检及免疫组化,部分病例对激素治疗反应良好,发病可能与EB病毒感染有关,预后有待于进一步观察。［中国当代儿科杂志,2009,11（7）：596-598］     

肝细胞癌肿瘤抑制基因的杂合性缺失和微卫星不稳定性研究

目的　了解肿瘤抑制基因(TSG)杂合性缺失(LOH)与微卫星不稳定性(MSI)在肝细胞癌发生机制中的作用,并探讨其临床病理学意义。方法　采用显微组织切割基础上的DNA直接测序法,从92例手术切除肝细胞癌中筛选出36例信息性肝细胞癌进行6种TSG(APC、DCC、MCC、OGG1、p53和RB1)的LOH检测,对其中15例肝细胞癌进行13个多态性微卫星位点的LOH和MSI检测,并与临床病理学参数的相关性进行统计学分析。结果　TSG的LOH总发生率为41 .7% (15 /36),仅MCC基因未出现LOH。15例肝细胞癌中有9例(60% )发生微卫星LOH,占检测微卫星的46 .2% (6 /13),但无1例肝细胞癌出现MSI。若将APC、OGG1和DCC基因LOH作为Ⅰ型(n=7 ),将p53和RB1基因LOH作为Ⅱ型(n=8)进行统计学处理,则两组肝细胞癌的平均瘤体直径分别为( 2. 9 ±1 .7)cm和(7 .2 ±3 .4)cm (P<0 .01),两组患者术后平均生存期分别为( 72. 0 ±38 6 )个月和(51 .0±30. 4)个月(P<0 .05 )。肝细胞癌基因变异型与患者的年龄、性别、血清甲胎蛋白水平、HBsAg阳性率、合并肝炎/肝硬化、肝细胞癌分化程度和组织学类型之间无明显相关性。结论　在肝细胞癌发生的多阶段演进与多基因变异过程中,LOH路径所起的作用要比MSI路径更大。Ⅰ型基因变异(APC、OGG1和DCC)主要在肝细胞癌早期阶段起作     

过量维生素A酸对金黄地鼠胚胎神经管维生素A酸受体α、β基因表达的影响

目的：探讨过量维生素A酸(RA)对金黄地鼠胚胎神经管RA受体α和RA受体β基因表达的影响。方法：采用RT-PCR方法,半定量分析金黄地鼠神经管正常发生及RA致神经管畸形过程中RA受体α和RA受体βmRNA表达水平的变化。结果：过量RA可使RA受体α和RA受体βmRNA在金黄地鼠神经管中的表达水平呈现短时下降,而后又大幅上升的变化。结论：过量RA引起的RA受体α和RA受体βmRNA表达水平的变化与RA致金黄地鼠神经管畸形相关。