颈-股动脉脉搏波传导速度与空腹血糖受损的相关性研究

目的分析本地区成年人颈一股动脉脉搏波速度（cf-PWV）与空腹血糖受损（IFG）风险的相关性,探讨年龄、体重指数（BMI）、体脂率、颈围、腰围及血脂对空腹血糖受损风险相关因素的影响。方法对5099例本地区来自社区的健康体检人群测量cf-PWV、BMI、体脂率、颈围、腰围、血压、空腹血糖、空腹胰岛素及血脂水平。分析影响空腹血糖受损的相关因素。结果对年龄、性别、血脂、血压等多因素进行校正后,通过升高分组变量cf-PWV水平,计算cf-PWV各五分位组的空腹血糖受损（impairedfastingglucose,IFG）风险,IFG风险的比值比及95％的可信区间（ORs,95％CI）分别为1．00,1．07（0．83-1．39）,1．20（1．08-1．34）,1．13（1．04-1．23）,1．14（1．05-1．25）（P〈0．01）。cf-PWV与年龄、颈围交互作用对IFG风险产生影响（P〈0．01）。结论cf-PWV与IFG密切相关,并独立于其他代谢危险因素,cf-PWV与年龄、颈围交互作用影响IFG风险。     

2型糖尿病患者运动试验时肺气体交换功能变化初探

目的　探讨糖尿病患者运动能力及其运动时肺的通气与气体交换功能的变化。方法无明显慢性并发症住院的 2型糖尿病患者 2 1名和健康非吸烟对照组 2 0名进行限时递增负荷运动试验 ,测其静息时和运动中肺的通气与气体交换量的变化。结果　糖尿病患者最大运动负荷量、运动末的最大每分耗氧量及每搏耗氧量均较对照组低 ,运动末的最大每分通气量、最大潮气量、最大呼吸频率、最大心率与对照组差异无显著性 ;而呼吸商在运动前后均显著高于对照组 (P <0 .0 1)。结论　无明显慢性并发症的糖尿病患者运动能力显著下降 (P <0 .0 1) ,但运动中肺的通气功能无异常改变 ,推测其运动能力的下降可能与肌肉组织氧的摄取与利用障碍有关     

TSH受体基因SNP与Graves病、桥本甲状腺炎和结节性甲状腺肿之间的相关性研究

目的　探讨TSH受体基因单核苷酸多态性 (SNP)与甲状腺疾病〔包括Graves病 (GD) ,结节性甲状腺肿 ,桥本甲状腺炎 (HT)〕有无相关性。方法　以 60例有甲状腺疾病家族史患者 (其中 3 0例GD、10例HT、2 0例结节性甲状腺肿患者 ) ,48例散发Graves病患者及 96名健康对照者作为研究对象 ,采用外周血白细胞抽提DNA ,设计引物 ,PCR扩增 ,对扩增产物纯化后测序。结果患者中共发现 8个多态位点 ,其中第8外显子上的多态位点 (E8A 40C)在SNP库中未见报道 ,为首次发现 ;将这些多态位点基因型变化与正常组比较 ,无明显统计学差异。结论　本研究提示汉族人TSH受体基因与这几种甲状腺疾病无相关性 ;该基因的多态位点在不同的人种间存在明显差异。     

汉族先天性房室间隔畸形患者GATA-4基因的突变分析

目的 探讨先天性房室间隔畸形患者GATA-4基因突变情况以及其基因型和表现型之间的关系.方法 选择50例汉族先天性房室间隔畸形患者和100名汉族健康者,用聚合酶链反应方法扩增GATA-4基因6个外显子编码区和邻近序列,聚合酶链反应产物纯化后以自动测序仪测序,然后与NCBI数据库中GATA-4基因的序列进行比较.结果 在汉族先天性房窜间隔畸形患者中发现GATA-4基因2个新的杂合子突变,分别位于第2号外显子的His28Tyr和位于第7号外显子的His436Tyr.结论 转录因子GATA-4基因突变可能与汉族先天性房室间隔畸形的发生有关.     

TSHR基因内含子1区域多态性与Graves病的关联研究

目的 探讨中国江苏徐州地区汉族人群促甲状腺素受体(TSHR)基因内含子1 上单核苷酸多态性位点(SNP)rs179247和rs12101261与Graves病的关系.方法应用TaqMan探针技术,在Fluidigm EP1平台上对1 066例Graves病患者和1 107名健康对照者进行基因分型;同时检测样本血清甲状腺激素和TSH受体抗体(TRAb)水平.结果 rs179247_A、rs12101261_T与Graves病易感性关联(分别为OR=1.35,95%CI 1.19～1.54,P=5.92×10-6;OR=1.32,95%CI 1.16～1.50,P=2.22×10-5);Logistic回归提示rs179247是独立的易感位点.在rs179247_GG、AG、AA 3种基因型之间相比,血清TRAb水平具有统计学差异(P=0.015);其他临床表现其差异均无统计学意义(P＞0.05).结论 TSHR基因内含子1区域rs179247、rs12101261与徐州地区汉族人群Graves病相关联,并且rs179247是一个独立易感位点;该多态性与血清TRAb水平有关,与血清甲状腺激素水平、发病年龄、甲状腺肿大程度、Graves病眼征分级、复发与否无明显关联.

Abstract：

Objective To investigate the association between polymorphisms of thyroid-stimulating hormone receptor(TSHR)gene intron 1(rs179247, rs12101261)and Graves′ disease(GD)in the China Han population from Xuzhou city, Jiangsu Province. Methods Total 1 066 GD patients and 1 107 control subjects were recruited for genotyping by Taqman probe technique on Fluidigm EP1 platform. Meanwhile, serum concentrations of thyroid hormone and TSH receptor antibodies(TRAb)were determined. Results The rs179247_A, rs12101261_T were significantly associated with GD risk(OR=1.35, 95%CI 1.19-1.54, P=5.92×10-6; OR=1.32, 95%CI 1.16-1.50, P=2.22×10-5). Logistic regression identified that rs179247 was an independent susceptibility locus of GD. Serum TRAb concentration showed a significant difference(P=0.015)among rs179247_AA, AG, and GG genotypes. Conclusion rs179247 and rs12101261 in TSHR intron 1 are both associated with GD, and rs179247 may contribute risk to GD independently. The polymorphism is associated with TRAb, but not with serum concentration of thyroid hormones, age of onset, diffused thyroid goiter, ophthalmic signs, and relapse.     

Clinical and molecular genetic analysis for 7 patients from 5 pedigrees with 17α-hydroxylase/17, 20 lyase deficiency

Objective To investigate the clinical and genetic characteristics of 7 patients from 5 families with 17α-hydroxylase/17, 20 lyase deficiency (17OHD) and the CYP17A1 mutation in Chinese. Methods Clinical features and laboratory data were collected from 5 families with 17OHD. PCR direct sequencing was performed to screen the mutation of CYP17A1 gene of the patients. Polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP) and sequencing were performed to screen the mutations of CYP17A1 gene in 288 healthy individuals from Shandong province. Results Seven patients (5 of them were 46, XX; 2 were 46, XY) had typical clinical presentation of sexual infantilism, hypertension and hypokalemia. Hormone profile indicated decreased plasma cotisol and sex hormones, and elevated blood adrenocorticotrophic hormone (ACTH). TAC329AA and H373L in exon 6 and D487_ F489del in exon 8 were identified from the patients. One heterozygote for D487_F489del was identified in 288 healthy controls. Conclusion The TAC329AA and D487_F489del of the CYP17A1 gene were the most frequent mutations in Chinese with 17OHD. There might be certain frequency of heterozygotes for D487_ F489del in Chinese population.     

脂肪分化相关蛋白的研究进展

脂肪分化相关蛋白(ADRP)是细胞内脂肪积聚的一个特异指标。它在未分化的脂肪细胞中含量很低,在分化过程中急剧增加。ADRP不仅参与巨噬细胞中脂质的代谢,刺激纤维母细胞中脂质的聚集和脂滴的形成,而且也参与肺泡Ⅱ型细胞与纤维母细胞间的脂质转移,促进脂肪酸的摄取。ADRP的调控与环氧化酶抑制物、长链脂肪酸及某些药物有关。     

多发性内分泌腺瘤病1型1例及其家系的研究

目的探讨多发性内分泌腺瘤病1型(multiple endocrine neoplasia type 1,MEN1)患者的临床特征及其家系MEN1基因突变的情况。方法回顾性分析1例MEN1患者及其7名家系成员的临床资料。抽取先证者(MEN1患者)及其大伯、父亲、大哥、妹妹、侄子、大女儿、小女儿的外周抗凝血5mL,采用标准的酚/氯仿抽提法提取人血白细胞基因组DNA,运用聚合酶链式反应(PCR)、DNA测序分析技术检测MEN1基因的9个外显子。结果先证者(MEN1患者)及其父亲、大哥均为MEN1患者,大女儿、侄子均为MEN1基因突变携带者,大伯、妹妹及小女儿MEN1基因检测均未见异常。基因序列测序结果显示,正常人的终止密码子为TGC,而MEN1患者位于第10号外显子上第1 227位的核苷酸发生了C>A的杂合突变,终止密码子TGA提前出现,menin蛋白截短,MEN1基因突变。结论 MEN1基因检测不仅对患者的诊断具有重要的意义,也为患者亲属的早期诊断和临床干预提供了可靠的依据。     

Clinical and molecular genetic analysis for 7 patients from 5 pedigrees with 17α-hydroxylase/17, 20 lyase deficiency

Objective To investigate the clinical and genetic characteristics of 7 patients from 5 families with 17α-hydroxylase/17, 20 lyase deficiency (17OHD) and the CYP17A1 mutation in Chinese. Methods Clinical features and laboratory data were collected from 5 families with 17OHD. PCR direct sequencing was performed to screen the mutation of CYP17A1 gene of the patients. Polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP) and sequencing were performed to screen the mutations of CYP17A1 gene in 288 healthy individuals from Shandong province. Results Seven patients (5 of them were 46, XX; 2 were 46, XY) had typical clinical presentation of sexual infantilism, hypertension and hypokalemia. Hormone profile indicated decreased plasma cotisol and sex hormones, and elevated blood adrenocorticotrophic hormone (ACTH). TAC329AA and H373L in exon 6 and D487_ F489del in exon 8 were identified from the patients. One heterozygote for D487_F489del was identified in 288 healthy controls. Conclusion The TAC329AA and D487_F489del of the CYP17A1 gene were the most frequent mutations in Chinese with 17OHD. There might be certain frequency of heterozygotes for D487_ F489del in Chinese population.