三氧化二砷对肝癌细胞系HepG2生长及核基质蛋白的影响

目的 探讨三氧化二砷对人肝癌细胞系ＨｅｐＧ２的生长及核基质蛋白的影响。方法 应用生长指数分析和高分辨ＳＤＳ－聚丙烯酰胺交双向电泳比较用Ａｓ２Ｏ３处理后的ＨｅｐＧ２细胞主核基质蛋白的改变。结果 Ａｓ２Ｏ３抑制ＨｅｐＧ２的生长,双向电泳显示经Ａｓ２Ｏ３处理后ＨｅｐＧ２细胞内出现新的核基质蛋白,并且该蛋白是细胞特异性的。结论 核基质蛋白是某些抗癌药物的作用靶子,Ａｓ２Ｏ３抑帛 癌细胞的生长可望有用于临床     

High Expression of Insulin-like Growth Factor Ⅱ (IGF-Ⅱ) Using Bac-to-Bac Expression System

Ｈｕｍａｎｉｎｓｕｌｉｎ ｌｉｋｅｇｒｏｗｔｈｆａｃｔｏｒ Ⅱ (ＩＧＦ Ⅱ )ｉｓａ 6 7ａｍｉｎｏａｃｉｄｓｉｎｇｌｅ ｃｈａｉｎｐｅｐｔｉｄｅ ,ｗｈｉｃｈｉｓｉｎｖｏｌｖｅｄｉｎｆｅｔａｌｇｒｏｗｔｈａｎｄｄｅｖｅｌｏｐ ｍｅｎｔ[1] .Ｔｈｅｇｒｏｗｔｈ ｐｒｏｍｏｔｉｎｇｐｒｏｐｅｒｔｉｅｓｏｆＩＧＦ Ⅱ ,ａｓｗｅｌｌａｓｔｈｅｉｒｓｔｒｕｃｔｕｒａｌｈｏｍｏｌｏｇｙｔｏｐｒｏｉｎｓｕｌｉｎａｎｄＩＧＦ Ⅰａｒｅｒｅｆｌｅｃｔｅｄｉｎｔｈｅｎａｍｅｏｆｔｈｅｐｅｐｔｉｄｅｓ .Ｉｔｉｓａｌｓｏｈｅｌｐｆ…     

改良的Black法功能性修复双侧唇裂18例分析

推广双侧唇裂的功能性修复。方法：应用改良的Ｂｌａｃｋ法。结果：１８例双侧唇裂患儿经６－１８个月的术后随访,均后获得满意的动态及静态效果。结论无论完全性或不完全性双侧唇裂,只有功能性修复,才可获得良好的前唇部肌肉及功能。     

急性坏死型胰腺炎的B超与CT诊断比较(附38例分析)

目的 评价超声及ＣＴ诊断急性坏死型胰腺炎（ＡＮＰ）的价值。方法 将３８例急性胰腺炎患者手术前的超声及ＣＴ诊断资料与手术病理诊断进行对照,分析超声及ＣＴ诊断ＡＮＰ的敏感性、特异性、预测精确性。结果 ３８例患者,按手术病理诊断,３０例为ＡＮＰ,７例为急性水肿型胰腺炎,１例化脓性胆囊炎胰腺未见异常。ＣＴ诊断ＡＮＰ的敏感性９５．８％,特异性８０．０％,阳性预测值９５．８％,阴笥预测值８０．０％,预测精确性     

GNAS gene mutations affecting XLαs and bone health: A long neglected relationship

The GNAS locus is an imprinted site. The α-subunit of the stimulatory G protein (Gsα) and extralarge variant (XLαs) are the two important products of the GNAS locus. The abnormal expression of Gsα is associated with pseudohypoparathyroidism (PHP) and related disorders, including Albright hereditary osteodystrophy (AHO), pseudopseudohypoparathyroidism (PPHP), and progressive osseous heteroplasia (POH). XLαs protein can mimic the catalytic intracellular synthesis of cyclic adenosine monophosphate (cAMP) by Gsα in response to parathyroid hormone (PTH) stimulation, which may be involved in the pathogenesis of PPHP and POH in patients with paternal GNAS defects. A paternally inherited nonsense variant in the first exon of XLαs in an adult patient may be associated with fractures and osteopetrosis. The relationship between the XLαs product of the GNAS locus and bone remodeling may have been overlooked. Here, we summarize the phenotypes of genetic mouse models and clinical cases of XLαs variations and suggest that the abnormal paternal expression of XLαs may be associated with the development of POH and affect osteoblast and osteoclast differentiation.     

Decreased frequency of a novel T-lymphocyte subset,CD3+CD4−CD7+CD57− T cells,in hepatitis B virus-related end-stage liver disease might contribute to disease progression

CD7 and CD57 are related to the differentiation and functional stages of CD8⁺ T cells. However, the role of their combined presence in CD8⁺ T cells in patients with chronic hepatitis B virus (HBV) infection, especially those with end-stage liver disease, remains unclear. Blood samples from healthy volunteers and patients with chronic hepatitis B were analyzed via Luminex assay and ELISA to measure plasma cytokine levels. Further, recombinant IL-22 was used to stimulate peripheral blood mononuclear cells from healthy volunteers, and the frequency of CD3⁺CD4⁻CD7⁺CD57⁻ T cells and apoptosis rates were investigated via flow cytometry. Patients with end-stage liver disease, particularly those with acute to chronic liver failure, showed decreased CD3⁺CD4⁻CD7⁺CD57⁻ T cell frequency. Furthermore, the prevalence of CD3⁺CD4⁻CD7⁺CD57⁻ T cells was negatively correlated with disease severity, prognosis, and complications (ascites). We also observed that IL-22 promoted apoptosis and brought about a decrease in the number of CD3⁺CD4⁻CD7⁺CD57⁻ T cells in a dose-dependent manner. CD3⁺CD4⁻CD7⁺CD57⁻ T cells displayed a B and T lymphocyte attenuator (BTLA)^highCD25^highCD127^high immunosuppressive phenotype and showed low interferon-γ, tumor necrosis factor-α, granzyme A, and perforin expression levels. The present findings will elucidate the pathogenesis of HBV-related end-stage liver disease and aid the identification of novel drug targets.     

贲门部浸润性癌预后的探讨

探讨贲门部浸润性癌的预后;与幽门部浸润性癌进行对比分析。方法贲门部癌５０例,对照组幽门部部５０例,采用临床病理学资料和免疫组织化学方法进行对比分析。结果①临床病理学,Ｃ．Ｃａｓ和Ｐ．Ｃａｓ之间除淋巴结转移（Ｐ〈０．０５）有显著差异外,其它无显著性差异。②生存曲线分析,Ｃ．Ｃａｓ和Ｐ．Ｃａｓ之间,在淋巴结转移（Ｐ〈０．０１）和淋巴管侵入（Ｐ〈０．０５）方面有显著差异;在１００例进行性胃癌当中癌的浸润     

定向克隆构建RAB5A基因真核细胞表达载体

目的 探讨ＲＡＢ５Ａ作为蛋白质人胞信号传导调控者在肿瘤转移中的作用及影响。方法 采用双酶切、定向克隆技术建立了人ＲＡＢ５Ａ基因真核细胞表达载体ｐｃＤＮＡ３．１（－）０ＲＡＢ５Ａ。结果 测定分析证实了ＲＡＢ５Ａ基因正向插入ｐｃＤＮＡ３．１（－表达载体,免疫组化分析表明转染了ｐｃＤＮＡ３．１（－）－ＲＡＢ５Ａ表达载体的ＡＧＺＹ８３－ａ细胞系细胞内的荧光亮度明显强于转染前,蛋白电泳显示近２３ＫＤ的蛋白质     

董酒珍酒对小鼠血清睾酮皮质醇等的影响

目的　研究贵州产名酒董酒、珍酒的保健作用。方法　采用氢化可的松 (以下简称氢可 )肌注 (每日 1次 ,连续 3d)复制小鼠阳虚症模型 ,用放免法测血清睾酮、皮质醇水平及心、肝、肾、睾丸组织形态学的变化 ,并比较董酒、珍酒对其的影响。结果　肌注氢可的各组血清皮质醇浓度明显增加 ,与正常组比较 ,差异具显著性 (P <0 .0 5 ) ;单纯阳虚组血清睾酮浓度虽不降低 ,但睾丸组织中生精状况差 ;而在阳虚 饮酒组 (董酒或珍酒组 ) ,血清睾酮浓度明显降低 (P <0 .0 5或P <0 .0 1) ,但睾丸组织中生精活跃 ,可见较多的精母细胞、精子细胞等精子发育良好。结论　董酒、珍酒可降低阳虚小鼠血清睾酮水平 ,但对其睾丸生精功能似有一定促进作用 ,其机制有待阐明。     

硬化性上皮样纤维肉瘤组织病理学特征及临床诊断

目的 分析硬化性上皮样纤维肉瘤的组织病理学特征及临床诊断。方法 组织病理观察。免疫组织化学及电镜观察。结果 硬化上皮样纤维肉瘤主要以上皮样细胞伴大量胶原纤维为特征,肿瘤细胞呈ｖｉｍｅｎｔｉｎ阳性反应,电镜可见胶原分泌颗粒。结论 硬化性上皮样纤维肉瘤是一种较为少见的软组织肿瘤,须正确把握其诊断与鉴别诊断。