慢性胆囊炎患者血清瘦素及可溶性瘦素受体与血脂水平的变化及关系

目的:探讨慢性胆囊炎患者血清瘦素(Lep)、可溶性瘦素受体(s LR)与血脂水平的变化及其相互关系。方法:选择103例慢性胆囊炎患者,以91例健康体检者为对照,测定所有受试者空腹血清Lep、s LR、总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白(LDL)、高密度脂蛋白(HDL),分析慢性胆囊炎患者血清Lep、s LR水平与血脂水平的关系。结果:与对照组比较,慢性胆囊炎组患者血清TC、LDL和Lep水平均明显升高,而s LR水平明显降低(均P0.05)。单因素分析显示,Lep水平与TC、TG和HDL水平呈明显正相关(均P0.05),而s LR水平与各血脂指标无明显相关性(均P0.05);多元回归分析显示,Lep水平与TC水平呈明显正相关(P0.05)。结论:慢性胆囊炎患者血清Lep明显升高、s LR水平降低以及血脂代谢紊乱,其中,Lep升高所致胆固醇代谢障碍可能是主要原因。     

高脂血症性胰腺炎大鼠瘦素、瘦素受体表达的动态变化

目的:探讨瘦素及瘦素受体在大鼠高脂血症性胰腺炎(HLAP)中的动态变化.方法:将60只SD雄性大鼠随机分为3组:正常对照组(NC组),高脂血症组(HL组),高脂血症性胰腺炎组(HLAP组).采用高脂饲料喂养3周后经腹腔注射L-精氨酸500 mg/100 9体重制作大鼠高脂血症性胰腺炎模型.各组分别于造模后24 h、36...     

胃转流术对2型糖尿病大鼠胰岛细胞胰岛素受体及胰岛素受体底物2表达的影响

目的：探讨胃转流术对2型糖尿病大鼠胰岛细胞中胰岛素受体（IRc）及胰岛素受体底物2（IRS-2）表达的影响。 方法：高糖高脂饮食联合腹腔注射小剂量链脲佐菌素建立2型糖尿病大鼠模型,将造模成功的大鼠分为模型组和胃转流组,另取正常大鼠作为正常对照组,胃转流组大鼠行胃空肠吻合术加空肠侧侧吻合,模型组与正常对照组大鼠均行假手术。检测术前及术后8周大鼠空腹血糖、血清胰岛素,计算胰岛素敏感指数（ISI）,用免疫组化法检测胰腺组织IRc及IRS-2的表达。 结果：与正常对照组比较,模型组与胃转流组术前空腹血糖均明显升高,ISI均明显降低,但术后胃转流组两项指标均较模型组明显改善（均P<0.05）;各组胰岛素水平手术前后均无统计学差异（均P>0.05）。术后8周,胃转流组胰岛细胞IRc和IRS-2表达量均明显高于模型组（均P<0.05）,其中IRc表达量仍低于正常对照组（P<0.05）,但IRS-2表达量与正常对照组接近（P>0.05）。 结论：2型糖尿病大鼠胰岛细胞中IRc及IRS-2表达下调,而胃转流术能够使其表达显著增加,这可能是该手术产生对2型糖尿病产生疗效的机制之一。     

糖尿病肾脏疾病患者血清三叶因子水平变化的临床意义

目的 探讨糖尿病肾脏疾病（diabetic kidney disease,DKD）患者血清三叶因子（trefoil factor 3,TFF3）水平的变化及其临床意义.方法 依据24 h尿白蛋白排泄率（urine albumin excretion rate,UAER）将123例2型糖尿病（type 2 diabetes mellitus,T2DM）患者分为3组：单纯糖尿病组（SDM组,UAER＜30 mg/24 h）42例;早期糖尿病肾脏疾病组（EDKD组,UAER 30～300 mg/24 h）46例;临床糖尿病肾脏疾病组（CDKD 组,UAER＞300 mg/24 h）35例.另选择健康体检者20名为对照组.用酶联免疫吸附测定（enzyme linked immunosorbent assay,ELISA）检测所有研究对象血清TFF3表达水平,并对相关临床资料进行统计学分析.结果 CDKD组的血清TFF3水平[（71.33±9.48）ng/ml]明显高于其他3组,EDKD组患者血清TFF3水平[（49.31±8.93）ng/ml]显著高于SDM组[（32.65±7.27）ng/ml],而对照组血清TFF3水平最低[（17.65±6.27）ng/ml],各组间比较有统计学差异（P＜0.01）.Pearson相关分析显示,T2DM患者血清TFF3水平与UAER呈正相关（r＝0.897,P＜0.05）.结论 血清TFF3表达水平与DKD的发生、发展呈正相关,可作为预测及判断DKD严重程度的重要指标之一.     

瘦素和瘦素受体在食管癌中的表达及其意义

目的 探讨瘦素及其受体与食管癌发生发展的关系.方法 采用免疫组织化学染色方法检测52例食管癌和49例正常食管组织中瘦素及受体的表达,并分析其与临床病理组织学各参数之间的关系.结果 52例食管癌组织中瘦素与受体的表达率分别为78.8%(41/52)、82.7%(43/52).49例正常的食管组织两者的表达率分别为58.3%(28/49)、59.2%(29/49).瘦素及其受体在食管癌与正常食管组织中的表达差异均有统计学意义(P＜0.05),瘦素及其受体的表达与部位、肿瘤大小、组织学、淋巴结的转移及TNM分期明显相关(P均＜0.05).结论 瘦素及其受体的双重表达在食管癌的发生发展过程中起一定的促进作用.

Abstract：

Objective To investigate the role of leptin and leptin receptor in carcinogensis and development of esophageal carcinoma. Methods The expression of leptin and leptin receptor was detected in 52 cases of esophageal carcinoma tissues and 49 cases of normal esophageal tissues by immunohistochemistry. The correlation between their expression and clinicopathological parameters was also analysized. Results The expression rate of leptin and leptin receptor in esophageal carcinoma was 78. 8% (41/52) and 82.7% (43/52) respectively, and the rate in normal esophagus was 58.3% (28/49) and 59.2% (29/49) respectively. The expression rate of leptin and leptin receptor both had statistically significantly differences between esophageal carcinoma and normal esophagus tissues (P ＜ 0. 05). The expression rate of leptin was associated with position, tumor size, differentiation, lymphatic metastasis and TNM stage (P ＜ 0. 05 ). Conclusion Leptin and leptin receptor were dually expressed in esophageal carcinoma.They played important roles in the process of carcinogensis and development of esophageal carcinoma.     

Roux-en-Y胃转流术对2型糖尿病大鼠血清vaspin表达的影响

目的研究Roux-en-Y胃转流术(RYGB)对2型糖尿病(T2DM)大鼠的治疗作用,并探讨内脏脂肪组织产生的丝氨酸蛋白酶抑制剂(vaspin)在RYGB治疗T2DM机制中的可能作用。方法取造模成功的T2DM大鼠20只和周龄、性别相匹配的正常SD大鼠20只,用随机数字表法将其随机分为T2DM-RYGB组、T2DM-假手术组及RYGB组、假手术组,每组10只。分别于术前及术后第4和8周检测各组大鼠的空腹血糖(FPG)、血清胰岛素(INS)、血清vaspin水平及胰岛素抵抗指数(HOMA-IR),并分析血清vaspin水平与FPG、INS及HOMA-IR的相关性。结果手术前,T2DM-RYGB组与T2DM-假手术组比较以及RYGB组与假手术组比较,FPG水平、INS水平、vaspin水平及HOMA-IR差异均无统计学意义(P>0.05);而T2DM-RYGB组及T2DM-假手术组的FPG水平、INS水平、vaspin水平及HOMA-IR均分别明显高于RYGB组(P<0.05)及假手术组(P<0.05)。术后第4周,T2DM-RYGB组FPG水平、INS水平、vaspin水平及HOMA-IR较术前下降,除FPG水平(P<0.05)外,其余指标与术前比较差异均无统计学意义(P>0.05);术后第8周,FPG水平、INS水平、vaspin水平及HOMA-IR进一步下降,与术前比较差异均有统计学意义(P<0.05)。T2DM-假手术组、RYGB组及假手术组组内术前及术后第4周、第8周FPG水平、INS水平、vaspin水平及HOMA-IR比较,差异均无统计学意义(P>0.05)。手术前及手术后第4周、第8周T2DM-RYGB组与T2DM-假手术组血清vaspin水平与其对应血清INS水平、HOMA-IR均呈正相关(P<0.05)。结论 RYGB对T2DM大鼠具有一定的治疗作用,RYGB后vaspin表达水平降低,胰岛素敏感性改善,这可能是RYGB治疗T2DM的机制之一。     

瘦素和瘦素受体在食管癌中的表达及其意义

Objective To investigate the role of leptin and leptin receptor in carcinogensis and development of esophageal carcinoma. Methods The expression of leptin and leptin receptor was detected in 52 cases of esophageal carcinoma tissues and 49 cases of normal esophageal tissues by immunohistochemistry. The correlation between their expression and clinicopathological parameters was also analysized. Results The expression rate of leptin and leptin receptor in esophageal carcinoma was 78. 8% (41/52) and 82.7% (43/52) respectively, and the rate in normal esophagus was 58.3% (28/49) and 59.2% (29/49) respectively. The expression rate of leptin and leptin receptor both had statistically significantly differences between esophageal carcinoma and normal esophagus tissues (P ＜ 0. 05). The expression rate of leptin was associated with position, tumor size, differentiation, lymphatic metastasis and TNM stage (P ＜ 0. 05 ). Conclusion Leptin and leptin receptor were dually expressed in esophageal carcinoma.They played important roles in the process of carcinogensis and development of esophageal carcinoma.     

瘦素和瘦素受体在食管癌中的表达及其意义

Objective To investigate the role of leptin and leptin receptor in carcinogensis and development of esophageal carcinoma. Methods The expression of leptin and leptin receptor was detected in 52 cases of esophageal carcinoma tissues and 49 cases of normal esophageal tissues by immunohistochemistry. The correlation between their expression and clinicopathological parameters was also analysized. Results The expression rate of leptin and leptin receptor in esophageal carcinoma was 78. 8% (41/52) and 82.7% (43/52) respectively, and the rate in normal esophagus was 58.3% (28/49) and 59.2% (29/49) respectively. The expression rate of leptin and leptin receptor both had statistically significantly differences between esophageal carcinoma and normal esophagus tissues (P ＜ 0. 05). The expression rate of leptin was associated with position, tumor size, differentiation, lymphatic metastasis and TNM stage (P ＜ 0. 05 ). Conclusion Leptin and leptin receptor were dually expressed in esophageal carcinoma.They played important roles in the process of carcinogensis and development of esophageal carcinoma.     

正常月经周期子宫内膜瘦素和瘦素受体的表达

目的　探讨瘦素和瘦素受体系统在正常月经周期子宫内膜表达特点及其意义。　方法　应用免疫组织化学方法检测 60例正常月经周期子宫内膜瘦素和瘦素长受体蛋白的表达。原位杂交技术测定 2 5例子宫内膜瘦素和瘦素长受体mRNA。　结果　瘦素蛋白在子宫内膜腺体和间质呈阳性或强阳性表达 ,月经周期各期间无显著差异 ;瘦素长受体蛋白在子宫内膜间质中呈弱阳性或阴性表达 ,月经周期各期间无显著差异 ;瘦素长受体蛋白在子宫内膜腺体的表达分泌期显著高于增殖期 (P <0 .0 0 1 )。瘦素和瘦素长受体mRNA在增殖期和分泌期子宫内膜的腺体和间质中均呈阳性表达。　结论　瘦素长受体蛋白在分泌期子宫内膜腺体表达增强 ,有可能在孕卵着床过程中发挥作用     

2型糖尿病周围神经病变患者血清Hcy水平与糖尿病肾病的相关性研究

目的 探讨2型糖尿病周围神经病变(DPN)患者血清同型半胱氨酸(Hcy)水平与糖尿病肾病的相关性,阐明Hcy在DPN发病中的作用机制.方法 38例DPN患者(DPN组),35例非2型糖尿病周围神经病变患者(NDPN组),同时选择32例正常人作为对照组(NC组),采用循环酶法测定血清Hcy水平并比较,同时分析血清Hcy与胱抑素C(Cys-c)、尿微量白蛋白/肌酐(ACR)、肾小球滤过率(GFR)、振动觉阈值(VPT)、血糖、血脂、血压等指标的关系.结果 DPN组和NDPN组血清Hcy水平均明显高于NC组(15.13 ±1.56 vs.10.77±3.59 vs.7.19±1.95 μmol/L,P＜0.05或P＜0.01)),而DPN组血清Hcy水平明显高于NDPN组(15.13±1.56 vs.10.77±3.59tmol/L,P＜0.05).DPN患者血清Hcy水平与GFR成负相关,与VPT、Scr、Cys-c和ACR成正相关(P＜0.05或P＜0.01).Cys-c和VPT是影响DPN组患者血清Hcy水平的独立相关因素.结论 T2DM患者尤其是伴有DPN患者血清Hcy水平明显增高,与糖尿病肾病早期肾损害密切相关,可能在2型糖尿病周围神经病变的发生发展中具有重要作用.     

白芍总苷对糖尿病大鼠肾组织巨噬细胞TLR2与TLR4表达调节的研究

目的探讨白芍总苷对糖尿病大鼠肾组织巨噬细胞Toll样受体2与4表达的影响。方法建立链脲佐菌素诱导的大鼠糖尿病模型,将大鼠随机分对照组、模型组、白芍总苷给药组（50,100,200mg／kg／d灌胃）。8周后选用免疫组化单染及双染方法检验大鼠。肾组织巨噬细胞Toll样受体2、Toll样受体4以及核因子-kB-p-p65的表达。结果白芍总苷给药组（50,100,200mg／kg）鼠肾重／体质量以及尿蛋白水平明显低于模型组。白芍总苷给药组（50mg／kg）大鼠肾小球平均容量明显低于模型组,白芍总苷给药组（100与200mg／kg）平均容量与肾小管-间质损伤指数均明显低于模型组。模型组肾组织ED-1’细胞数明显高于对照组,白芍总苷给药组（50,100,200mg／kg）ED-1’细胞数较模型组明显下降,模型组。肾组织ED-1’Toll样受体2’、ED-1’Toll样受体4’以及核因子-kB-p-p65’细胞表达明显高于对照组,白芍总苷给药组（50,100,200mg／kg）肾组织中ED-1’Toll样受体2’、ED-I’Toll样受体4‘以及核因子-kBp-p65’细胞明显低于模型组。结论白芍总苷对于减少糖尿病大鼠早期肾脏损害有明显作用,其中与抑制糖尿病大鼠肾组织巨噬细胞Toll样受体2与4表达可能部分相关。     

Cholesterol Efflux Capacity In Vitro Predicts the Severity and Extent of Coronary Artery Disease in Patients with and without Type 2 Diabetes

Objective - To investigate the relation between severity and extent of coronary artery disease (CAD) and in vitro cholesterol efflux capacity. Design - This study consisted of 46 type 2 diabetic, and 42 nondiabetic men undergoing coronary angiography. Quantitative coronary angiography was used to estimate the severity, extent, and overall "atheroma burden" of CAD. The capacity of patient plasma to induce cholesterol efflux from cultured Fu5AH rat hepatoma cells was measured in vitro. Results - In the combined study population (n = 88), there was a significant inverse correlation between efflux and global atheroma burden (r = -0.23, p &lt; 0.05). In the diabetic group, the global atheroma burden index was independently associated both with cholesterol efflux and with LpA-I levels. However, in the nondiabetic CAD group this association was lost when efflux and LpA-I levels were included in the same model. Conclusion - The present study demonstrated that efflux capacity was inversely associated with the severity and extent of CAD. In the diabetic group this association was independent of LpA-I levels, suggesting impaired antiatherogenic potential of these particles in type 2 diabetic patients.     

老年男性骨质疏松症与血清痩素水平关系的研究

目的 探讨瘦素和老年男性骨质疏松的关系.方法 选择86例老年男性原发骨质疏松患者和50例正常对照者,采用放免法检测血清瘦素(Lep)浓度,骨钙素(BGP)、I型胶原前胶原氨基端前肽(PINP),采用双能X线吸收法测定腰椎及髋部骨密度,同时计算体重指数(body mass index, BMI),并分析瘦素与其他各项指标的关系.结果 老年男性骨质疏松组血清瘦素水平(4.137±2.439 μg/L)明显低于正常对照组(5.142±2.869 μg/L),两组有显著性差异,P<0.05.血清瘦素水平与BMI显著正相关(Pearsons 相关系数r=0.470, P<0.001),亦与L_(1-2), L_4的BMD 及BGP正相关(r分别为0.356,0.315,0.307,0.241, P<0.05),但在校正BMI后,瘦素与L_2的BMD及BGP的正相关关系消失,与L_1(r=0.193,P<0.05)和L_4(r=0.212, P<0.05)BMD的正相关关系亦有所减弱.结论 老年男性骨质疏松患者血清瘦素水平下降,推测瘦素可能通过外周局部作用影响骨代谢.     

他克莫司对糖尿病大鼠肾组织巨噬细胞浸润、增殖及活化的影响

目的探讨他克莫司对糖尿病大鼠肾脏保护作用的机制与肾脏内巨噬细胞浸润、增殖及活化的关系。方法应用链脲佐菌素建立大鼠糖尿病模型,随机分为对照组、模型组、他克莫司0．5及1．0mg-1·kg-1·d-1给药组（模型组＋他克莫司0．5、1．0）,4周后观察大鼠相对。肾质量、尿白蛋白排泄率,应用免疫组化方法,检测肾组织巨噬细胞表面标志、增殖细胞核抗原及诱生性一氧化氮合酶的表达。结果模型组＋他克莫司0．5、1．0组大鼠尿白蛋白排泄率水平明显低于模型组。免疫组化显示模型组大鼠肾组织巨噬细胞表面标志阳性、巨噬细胞表面标志阳性增殖细胞核抗原阳性及巨噬细胞表面标志阳性诱生性一氧化氮合酶细胞数阳性明显高于对照组,模型组＋他克莫司0．5、1．0组巨噬细胞表面标志阳性细胞数与模型组比较无明显差异,巨噬细胞表面标志阳性增殖细胞核抗原阳性及巨噬细胞表面标志阳性诱生性一氧化氮合酶细胞数明显低于模型组。结论他克莫司肾脏保护作用的机制可能部分与抑制肾组织中巨噬细胞增殖及活化有关。