DMSO对PCR扩增反应的影响

为解决扩增δ－受体基因屡次失败的问题,观察了在PCR体系加入不同浓度DMSO时对DNA扩增反应的影响。结果表明：一定浓度在DMSO可显著提高PCR扩增的特异性和扩增效率。     

膳食炎症指数与慢性肾脏病发病之间的研究进展

目的 对膳食炎症指数(DII)与慢性肾脏病发病之间的研究进行综述,探究两者之间的关系。方法 以“膳食炎症指数”、“促炎饮食”和“慢性肾脏病”、“肾小球滤过率”为检索词,在PubMed, Web of Science和EMBASE等数据库进行检索,查询并严格筛选合格文献,进一步综述膳食炎症指数与慢性肾病的流行病学关系,并从炎症因子方面解释阐述了膳食炎症指数与慢性肾病之间可能的相关机制。结果 促炎饮食会造成慢性肾脏病的发病风险升高,相反,抗炎饮食可以有效降低慢性肾脏病的发病风险,特定的炎症因子标志物对慢性肾脏病的发病有特定作用。结论 膳食炎症指数对慢性肾脏病的发生有一定的影响,未来可能作为慢性肾病发病的预防控制策略之一,并可能给肾脏疾病的防治提供重要的科学依据。     

Diagnosis and surgical treatment of multiple endocrine neoplasia

Background Multiple endocrine neoplasia (MEN) is relatively rare. But more patients could be found by detailed examination. We discuss the diagnosis and surgical treatment of MEN. Methods The clinical data of 95 MEN cases were retrospectively analyzed. There were 30 cases of MEN1 including 19 cases from 6 families. The MEN1 gene mutation was detected in 81.48% of cases admitted after 1997. There were 22 cases of primary hyperparathyroidism (PHPT), 10 cases of enteropanceatic tumor including 9 cases of insulinoma, 15 cases of pituitary adenoma, 9 cases of adrenal adenoma, 2 cases of thymic carcinoid. Two patients had 4 glands involved, 3 patients had 3 glands involved, 16 patients had 2 glands involved, and 6 patients had only one gland involved. Three patients had neither clinical symptoms nor biochemical changes, and was diagnosed by MEN1 gene mutation. Six patients presented with nephrolithasis and 6 patients had impaired pancreatic endocrine function. There were 60 cases of MEN2a and 5 cases of MEN2b. 58 cases of MEN2a belongs to 19 kindreds. All MEN2a patients but one presented RET gene mutation in codon 634, and all MEN2b cases had mutation in codon 918. 48 cases of MEN2a had thyroid masses with elevated calcitonin levels. 27 patients had pheochromocytoma including 12 cases of multiple loci and 5 malignancy. 13 patients presented with hyperparathyroidism. 5 MEN2b patients had medullary thyroid carcinoma and mucosal ganglioneuromatosis with Marfanoid. Among them, 3 patients had bilateral pheochromocytoma. Results In MEN1, subtotal parathyroidectomy was performed in 12 patients with PHPT and one patient received parathyroid adenoma enucleation. Insulinomas were enucleated in 4 patients. Two patients underwent thymus tumor extirpation. Total thyroidectomy with bilateral dissection of regional lymph nodes was performed in 16 patients with MEN2a and nodule enucleation was performed in 9 patients. Twenty two MEN2a patients underwent pheochromocytoma enucleation including bilateral adrenal resection in 10 cases. 5 MEN2b patients underwent total thyroidectomy with bilateral lymph node dissection. Among them, 3 cases underwent bilateral adrenal operations. Conclusions MEN varies in symptoms. Germline mutation test is helpful in establishing a diagnosis. Surgical management should be aimed at the improvement of life quality in MEN1 and prevention of the fetal tumors in MEN2.     

第一趾蹼皮瓣修复虎口挛缩

目的：探讨吻合血管的第一趾蹼皮瓣修复虎口挛缩的方法和疗效。方法：供区为第一趾蹼皮瓣,将皮瓣所携带的第一跖背动脉、大隐静及犀利腓深神经分别与受区桡动脉腕背支,头静脉及桡神经浅支吻合。结果：本组32例皮瓣全部成活,经1.0-3.5年随访,第一趾蹼游离皮瓣能满足保留虎口深度、展开度、良好感觉和美观外形的要求,临床效果较好。结论：第一趾蹼皮瓣与虎口皮肤组织结构伯厚薄及功用方面相似,是再造虎口的理想组织皮瓣。     

妊娠肝内胆汁淤积症孕妇血及脐血中一氧化氮水平与胎儿脐血流的关系

目的　了解妊娠肝内胆汁淤积症 (ICP)时 ,孕妇血及脐血中一氧化氮 (NO)水平与胎儿脐动脉血流的关系 ,以进一步探讨ICP时胎盘循环阻力增高的原因。方法　对 35例ICP孕妇 (ICP)组 )及 32例正常孕妇 (对照组 ) ,用镉还原显色法测定母血及脐血NO水平 ;超声多普勒测定胎儿脐血流S/D值。结果　ICP组母血、脐血NO水平均明显低于对照组 (P <0 .0 1,P <0 .0 1) ;两组母血、脐血NO水平均有相关关系 (r =0 .5 481,r =0 .82 0 6 ,P<0 .0 1,P <0 .0 1) ,ICP组脐动脉血流S/D值明显高于对照组 (P <0 .0 1) ,母血、脐血NO水平与S/D值呈负相关(r =- 0 .34 15 ,r=- 0 .42 6 1,P <0 .0 5 ,P <0 .0 1。结论　ICP时母血、脐血NO水平降低对胎儿—胎盘循坏阻力增加有重要的作用     

对叔丁基苯甲酸的合成

以对叔丁基甲苯（ＰＴＢＴ）为原料,氧气为氧化剂,冰醋酸为溶剂,醋酸钴为催化剂,考察了合成对叔丁基苯甲苯甲酸（ＰＴＢＡ）的影响因素,确定了该氧化过程的最佳工艺条件：反应温度９０～９５℃,原料与溶剂配比１：４（ｍ：ｍ）,催化剂质量浓度ｗ＝０．１～０．２,ＰＴＢＴ的化率可达１００％,收率为８７％。     

常年性变应性鼻炎sIL-2R的表达

目的探讨常年性变应性鼻炎(PAR)患者中可溶性白介素-2受体(sIL-2R)的表达水平.方法选择确诊为PAR者47例为PAR组,正常体检者36例为对照组.应用单抗、多抗双抗体夹心法检测sIL-2R的表达水平.结果PAR组患者的血清sIL-2R水平呈高表达,较正常人群组显著性升高(P＜0.001),且无男女性W别差异.结论血清sIL-2R在PAR的免疫病理过程中有重要的作用.     

微矩阵基因芯片筛选喉鳞癌相关基因的研究

目的：应用基因微矩阵方法筛选喉鳞癌相关基因。方法：按一步法抽提喉鳞癌和对照喉正常组织的总ＤＮＡ并纯化ｍＲＮＡ;将４０９６种人类基因ＰＣＲ产物用ＣａｒｔｅｓｉａｎＰｉｘｓｙｓ７５００点样仪按微矩阵排列点样于化学涂层的载玻片上,制成基因芯片;将等量的对照组织和喉鳞癌组织ｍＲＮＡ分别逆转录合成荧光分子掺入的ｃＮＤＡ－链做探针,混合后杂交上述基因芯片,经严格洗片后用ＳｃａｎＡｒｒａｙ３０００扫描仪扫描芯片     

基因芯片对PMA激活的血管内皮细胞早期反应基因的研究

目的 :用基因芯片研究 PMA激活的血管内皮细胞的早期反应基因 (imm ediate early response gene,ERG)。方法 :以包含 40 96条人类基因的 DNA芯片检测血管内皮细胞受代谢增强剂 PMA(phorbol myristate acetate)激活后早期的基因表达谱 ,并从中筛查出 ERG。结果 :血管内皮细胞受 PMA作用 6 h后 ,17条基因上调 ,11条下调。数据处理聚类分析表明 17条上调基因中多数 (13/ 17)属蛋白质磷酸酶和转录调控因子基因 ,而下调基因中多数 (9/ 11)为细胞分裂相关基因。结论 :证明PMA激活的人血管内皮细胞早期反应基因主要是转录调控因子和蛋白质磷酸酶基因。     

ITP患者骨髓及血液检测指标与疗效关系的探讨

目的：为观察血小板表面相关抗体Ｇ（ＰａＩｇＧ）、外周血血小板计数（ＢＰＣ）、平均血小板容积（ＭＰＶ）、骨髓巨核细胞计数（ＭＫ）与产板型巨核细胞比例（ＰＰＭＫ）对特发性血小板减少性紫癜（ｉｄｉｏｐａｔｈｉｃ ｔｈｒｏｍｂｏｃｙｔｏｐｅｎｉｃｐｕｒｐｕｒａ,ＩＴＰ）患者疗效的预计价值。方法：采用Ｃｏｕｌｔｅｒ全自动血球分析仪及双抗体夹心ＥＬＩＳＡ法等,对７３例ＩＴＰ患者治疗前和治疗后的ＢＰＣ、ＭＰＶ、