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1.
BP浓度与BMI、腰围、腰臀比、收缩压、舒张压、HOMA-IR、FINS、2hPG、尿酸、总胆同醇、TG、LDL-C呈直线相关,随着代谢综合征组分数目的 增加A-FABP水平进行性增加.结论 血清A-FABP表达升高与青少年腹型肥胖、糖脂代谢紊乱密切相关,是青少年不良肥胖及代谢综合征发生发展的重要标志物.  相似文献
2.
目的:探讨心肌型脂肪酸结合蛋白(H-FABP)在急性心肌梗死(AMI)早期诊断中的应用价值.方法:选择110例因急性胸痛住院的患者,按胸痛发作时间到就诊时间先后分为<3 h、3~6 h和>6 h三组,检测各组H-FABP、肌酸激酶同工酶(CK-MB)、肌钙蛋白I(cTnI)水平变化,比较3种心肌标志物诊断早期AMI的敏感性、特异性、阳性预测值、阴性预测值,同时比较胸痛发作≤6h时不同心肌标志物联合诊断AMI的敏感性、特异性、阳性预测值、阴性预测值.结果:入选病例最终确诊为AMI 62例,非AMI 48例(其中不稳定型心绞痛20例,稳定型心绞痛18例,非心源性胸痛10例).<3 h组H-FABP、CK-MB、cTnI水平诊断AMI的敏感性分别为87.5%、9.1%、45.8%;特异性分别为83.3%、91.6%、91.6%;3~6 h组H-FABP、CK-MB、cTnI水平诊断AMI的敏感性分别为98.1%、54.5%、63.6%;特异性分别为94.4%、88.9%、93.7%;>6 h组H-FABP、CK-MB、cTnI水平诊断AMI的敏感性分别为81.3%、93.7%、75.0%;特异性分别为83.3%、94.4%、100%;3种检测指标的特异性、阴性预测值、阳性预测值差异无统计学意义(P>0.05);胸痛发作≤6h时H-FABP与cTnI联合检测诊断AMI的敏感性为93.5%、特异性为85.4%,cTnI与CK-MB联合检测诊断AMI的敏感性为74.1%、特异性为87.5%.结论:H-FABP水平检测对于早期诊断AMI有较高的敏感性,优于传统指标CK-MB、cTnI,但特异性、阳性预测值、阴性预测值与CK-MB、cTnI相当.胸痛发作≤6h时H-FABP与cTnI联合检测可进一步提高AMI早期诊断的敏感度,优于传统的cTnI与CK-MB联合检测.  相似文献
3.
目的 研究血清脂肪细胞型脂肪酸结合蛋白水平与冠心痛及其危险因素之间的相关性.探讨其对冠心病及血管病变程度的预测价值.方法 经冠状动脉造影选取340名患者,用病变血管支数和Gensini积分表示冠状动脉病变程度,酶联免疫吸附法测定血清脂肪细胞型脂肪酸结合蛋白水平.结果 血清脂肪细胞型脂肪酸结合蛋白水平在三支病变组[18.6(13.8~24.0)μg/L]高于非冠心病组[16.4(13.5~20.4)μg/L,P<0.05]及单支病变组[17.5(13.5~20.3)μg/L,P<0.05];女性[20.0(16.9~23.9)μg/L]明显高于男性[15.4(12.5~20.3)μg/L,P=0.000];总体冠心痛组血清脂肪细胞型脂肪酸结合蛋白水平[18.3(13.2~22.8)μg/L]较非冠心病组[16.4(13.5~20.4)μg/L]升高,但差异无统计学意义(P=0.088).女性冠心病组血清脂肪细胞型脂肪酸结合蛋白[22.8(18.6~25.7)μg/L]明显高于非冠心病组[18.1(15.6~21.8)μg/L,P<0.01].血清脂肪细胞型脂肪酸结合蛋白与Gensini积分呈正相关(男性r=0.105,P<0.05;女性r=0.405,P<0.01),多元回归分析发现血清脂肪细胞型脂肪酸结合蛋白与女性Gensini积分有独立相关性(P=0.018).血清脂肪细胞型脂肪酸结合蛋白与甘油三酯(r=0.187,P<0.01)、空腹血糖(r=0.115,P<0.01)、高敏C反应蛋白(r=0.135,P<0.05)等心血管危险因素呈明显正相关,与高密度脂蛋白胆固醇(r=-0.168,P<0.01)及载脂蛋白A1(r=-0.126,P<0.05)呈明显负相关.结论 血清脂肪细胞型脂肪酸结合蛋白可能成为预测人类冠心病及血管病变程度的有用指标,它是女性冠心病的独立危险因素,可能对糖代谢及脂代谢有一定影响.  相似文献
4.
目的:联合测定心型脂肪酸结合蛋白(h-FABP)、肌钙蛋白T(cTnT)对早期诊断急性心肌损伤的意义.方法:对76例急性冠脉综合征(ACS)患者,自胸痛发生后1 h开始每小时连续监测心型脂肪酸结合蛋白、肌钙蛋白T至胸痛发生后6 h,共6次.结果:在早期急性心肌损伤中,h-FABP阳性结果出现的时间早于cTnT,二者对比有统计学意义(P<0.05).在cTnT升高患者中,h-FABP升高率为98.7%,二者对比无统计学差异(P>0.05).结论:在诊断早期急性心肌损伤时,h-FABP出现阳性结果时间早于cTnT,而联合测定h-FABP、cTnT对提高ACS患者早期确诊率,指导临床急救具有重要的价值.  相似文献
5.
The effects of increased free fatty acid (FFA) levels on ventricular arrhythmias remain controversial. Using ventricular fibrillation threshold (VFT), we examined the relationship between FFA levels and ventricular arrhythmias. Isolated rat hearts were perfused with palmitate bound to either albumin or fatty acid binding protein (FABP) by Langendorf's method. The VFT was determined by electrical stimulation. Perfusion with 0.12 mM albumin alone, 0.12 mM palmitate bound to 0.12 mM albumin, and 0.36 mM palmitate bound to 0.12 mM albumin did not lower the VFT significantly. However, 0.60 mM palmitate bound to 0.12 mM albumin lowered VFT from 2.19 +/- 0.20 mA to 1.56 +/- 0.13 mA. The perfusion of 0.36 mM palmitate bound to 0.12 mM FABP lowered the VFT from 2.05 +/- to 0.19 mA to 1.47 +/- 0.23 mA, but 0.12 mM FABP alone did not affect the VFT. Perfusion with 0.36 mM palmitate bound to 0.12 mM FABP caused the VFT to fall more than perfusion with 0.36 mM palmitate bound to 0.12 mM albumin. Then the effects of verapamil perfusion or a low concentration of perfusate Ca2+ on VFT were examined. VFT was determined by electrical stimulation. Palmitate (0.6 mM) bound to 0.12 mM albumin lowered VFT. Verapamil 10(-7) M perfusion and a low concentration of Ca2+ (Ca2+ 1.67 mM) suppressed the FFA-induced fall of VFT. These results suggested that the arrhythmogenic action of FFA was related to Ca2+ overload in myocardial cells.  相似文献
6.
Summary Fatty-acid binding protein (FABP) is thought to play an important role as a carrier protein of fatty acids in cells. It may leak from damaged cells, because its molecular weight is low (mol wt 14000) and it accounts for several percent of soluble protein. In this experiment we attempted to use FABP as a marker of cell injury under hypoxia in cultured myocytes. Newborn-rat myocytes were incubated under hypoxic treatment for 6 hours, and then the releases of FABP and CPK were measured. The cell-death ratio during hypoxygenation increased from 4 hours and rose to 80% at 6 hours, but it was only 8% under aerobic conditions. FABP in medium was detected at 1 hour, and rapidly increased and reached a plateau at 4 hours. On the other hand, CPK in medium was negligible during the 3 hours, then slightly increased. Ca antagonists and a 1 blocking agent inhibited the release of FABP and prevented cell death. But the 1-adrenergic blocking agent had little effect on preventing FABP leakage and cell death. These results show that FABP is of use as a marker of myocardial cell injury and revealed that the Ca antagonist and 1 blocking agent are useful drugs for the protection of myocardial cell injury in hypoxia.  相似文献
7.
Summary Alanine to threonine substitution at codon 54 of the fatty acid-binding protein 2 (FABP2) gene was recently shown to be associated with insulin resistance in Pima Indians. It has been hypothesized that the mutation may result in enhanced intestinal uptake of fatty acids, and thereby an impairment of insulin action. We analysed the association of the Ala54Thr substitution with insulin sensitivity and abdominal fat thickness in 395 Japanese men aged 50.5 ± 8.8 years (mean ± SD) with a body mass index of 24.4 ± 3.0 kg/m2. The frequency of the Thr54 allele was 0.34. Although the polymorphism was not significantly associated with diabetes or impaired glucose tolerance, subjects homozygous for the Thr54 allele had higher basal insulin levels. Analysis by homeostasis model assessment showed an association between the amino acid substitution and greater insulin resistance, and slightly higher beta-cell function. Oral glucose tolerance tests performed in 392 subjects without fasting hyperglycaemia showed higher 2-h insulin concentrations in individuals homozygous for the Thr54 allele when compared with heterozygotes or homozygotes for the Ala54 allele. No significant association was obtained between the polymorphism of the FABP2 gene and body mass index. However, ultrasound measurements of abdominal fat thickness revealed a greater accumulation of intra-abdominal fat in subjects homozygous for the Thr54 allele, whereas subcutaneous fat thickness was not associated with the polymorphism. These observations suggest that the Ala54Thr substitution in the FABP2 gene is associated with insulin resistance in Japanese men, and that visceral fat accumulation might be involved in the impaired insulin action associated with the substitution. [Diabetologia (1997) 40: 706–710] Received: 30 December 1996 and in revised form: 10 March 1997  相似文献
8.
在231例中国人中观察小肠脂酸结合蛋白基因(FABP2)54号密码子变异与NIDDM及其病理生理以及肥胖的关系。结果:FABP2-Thr54(+)基因型个体呈糖耐量减退时的空腹C肽、糖负荷后2小时C肽、负荷后3小时内C肽总值及面积均显著低于Thr54(-)基因型个体(P分别为0.04、0.03、0.01及0.01)。胰岛素有同样变化趋向。结果表明:中国人中的FABP2-Thr54(+)个体胰岛β细胞的葡萄糖刺激胰岛素分泌功能储备不及Thr54(-)者。FABP2-54号密码子变异可能参与糖尿病发病中胰岛素分泌不足的机制。  相似文献
9.
Aims/hypothesis: There is increasing evidence that intracellular fatty acid binding proteins (FABPc's; 15 kD) function as vehicles of cytosolic fatty acid transport. We studied skeletal muscle cytosolic FABPc, and enzymes reflecting β-oxidation and oxidative capacity (3-hydroxyacyl-CoA dehydrogenase, HAD, and citrate synthase, CS) in relation to weight loss and changes in substrate utilisation in a group of 35 obese women and obese men with Type II (non-insulin-dependent) diabetes mellitus (women = 27, men = 8). Methods: Muscle biopsies (vastus lateralis), and measurements of body composition, resting energy expenditure and respiratory exchange ratio were taken before and after dietary intervention (by means of a very low calorie diet). Results: Muscle FABPc tended to increase after diet (178 ± 13 vs 204 ± 12 mg.gww–1, p = 0.06), whereas there were no changes in CS (10.5 ± 0.7 vs 11.1 ± 0.6 U.gww–1) and HAD (11.2 ± 0.7 vs 11.7 ± 0.6 U.gww–1). There was a positive relation between the increase in FABPc as result of diet and the amount of weight lost (p < 0.01; adjusted R2, 15.4 %), even when adjusted for mean body weight, and changes in CS and in HAD by partial regression analysis. Interestingly, the increase in FABPc was positively related to increases in resting fat oxidation (adjusted R2, 24 %), even when adjusted for mean resting fat oxidation, and changes in CS and in HAD. Conclusion/interpretation: In conclusion, the ability to increase muscle FABPc could be directly related to weight loss and to changes in fat oxidation following dietary intervention in obesity and Type II (non-insulin-dependent) diabetes mellitus. [Diabetologia (2001) 44: 2013–2017] Received: 4 May 2001 and in revised form: 17 July 2001  相似文献
10.
BACKGROUND & AIMS: There is a subtle distinction between sporadic colorectal adenomas and cancers (SAC) and inflammatory bowel disease (IBD)-associated dysplasias and cancers. However, this distinction is clinically important because sporadic adenomas are usually managed by polypectomy alone, whereas IBD-related high-grade dysplasias mandate subtotal colectomy. The current study evaluated the ability of artificial neural networks (ANNs) based on complementary DNA (cDNA) microarray data to discriminate between these 2 types of colorectal lesions. METHODS: We hybridized cDNA microarrays, each containing 8064 cDNA clones, to RNAs derived from 39 colorectal neoplastic specimens. Hierarchical clustering was performed, and an ANN was constructed and trained on a set of 5 IBD-related dysplasia or cancer (IBDNs) and 22 SACs. RESULTS: Hierarchical clustering based on all 8064 clones failed to correctly categorize the SACs and IBDNs. However, the ANN correctly diagnosed 12 of 12 blinded samples in a test set (3 IBDNs and 9 SACs). Furthermore, using an iterative process based on the computer programs GeneFinder, Cluster, and MATLAB, we reduced the number of clones used for diagnosis from 8064 to 97. Even with this reduced clone set, the ANN retained its capacity for correct diagnosis. Moreover, cluster analysis performed with these 97 clones now separated the 2 types of lesions. CONCLUSIONS: Our results suggest that ANNs have the potential to discriminate among subtly different clinical entities, such as IBDNs and SACs, as well as to identify gene subsets having the power to make these diagnostic distinctions.  相似文献
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