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排序方式: 共有6134条查询结果,搜索用时 10 毫秒
91.
Lin Liu Jitao Feng Gong Zhang Xiaodan Yuan Fan Li Tingting Yang 《Current medical research and opinion》2018,34(1):123-129
Aims: To investigate the value of visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) in a cohort of a community’s residents who were diagnosed as pre-diabetes, and to evaluate the association of VAT and SAT with insulin resistance.Methods: This study was based on cross-sectional analysis of data from 107 adults. VAT and SAT were assessed by computed tomography. Insulin resistance was defined by homeostasis model assessment of insulin resistance >2.69. The relationship of VAT and SAT with insulin resistance were examined by linear regression. Logistic regression was used to analyze the association of VAT and SAT with insulin resistance.Results: A total of 87 subjects had VAT ≥100?cm2. Thirty-six out of 107 (33.6%) subjects were detected to have insulin resistance, 71 were normal (66.4%), and all had insulin resistance with VAT ≥100?cm2. VAT (r?=?0.378, p?.001) and SAT (r?=?0.357, p?.001) were significantly and positively correlated with insulin resistance. In multiple regression analysis when VAT and SAT were simultaneously included after adjustment for age, gender, BMI, and WC, the association between VAT and insulin resistance was still maintained (p?=?.003), but that of SAT was lost.Conclusion: Pre-diabetic subjects with insulin resistance had elevated levels of VAT. VAT was more strongly associated with insulin resistance than SAT in Chinese subjects with pre-diabetes. 相似文献
92.
This work aimed to achieve long-lasting delivery of radix ophiopogonis polysaccharide (ROP) by sucrose acetate isobutyrate (SAIB)-based in situ forming systems (ISFSs) alone or combined with mono-PEGylation of ROP. When the ‘90%SAIB/10% solvent’ system was used, the mean residence time (MRT) of ROP was prolonged by 4.3 5?~?7.00 times and the initial release rate was reduced significantly. However, this system was only suitable for days-long sustained release of ROP in short-term therapy. As to the ‘SAIB/additives/solvent’ system containing mono-PEGylated ROP, the results indicated that SAIB/poly(d,l-lactide-co-glycolide) (PLGA)/N-methyl-2-pyrrolidone (NMP) was superior to SAIB/polylactic acid (PLA)/NMP and SAIB/PLA/ethanol in controlled release. Moreover, weeks- to months-long (16–60 d) smooth release of ROP could be achieved by varying the concentration (10–30%) and molecular weight (MW) of PLGA (10–50?kDa) or by employing a moderate MW of PEGylated ROP (~20 or ~30?kDa). With further increasing the conjugate MW to ~40?kDa, the contribution of drug elimination to its plasma retention seemed to surpass that of the SAIB-based system, resulting in that the system no longer had an obvious influence on the in vivo behavior of the conjugate. Besides, the results of host response confirmed that with less solvent being used, the SAIB-based systems showed a higher biocompatibility than the PLGA-based systems, suggesting that they could be freely chosen in the prevention and/or cure of chronic diseases. 相似文献
93.
颅脑损伤大鼠下丘脑前部、延髓内脏带突触膨体素和突触蛋白Ⅰ的表达变化 总被引:1,自引:0,他引:1
目的探讨颅脑损伤大鼠伤后不同时间下丘脑前部和延髓内脏带脑组织突触膨体素(SYN)和突触蛋白I(SYN-I)表达的变化,以及致应激性胃溃疡的变化。方法将40只成年SD大鼠按随机数字表法随机分为四组:对照组(C组,n=10)、颅脑损伤后1 h组(T1组,n=10)、颅脑损伤后6 h组(T1组,n=10)、颅脑损伤后12 h组(T1组,n=10)。利用液压装置以1.8个标准大气压的压力打击致大鼠颅脑损伤。应用胃溃疡指数评估应激性胃溃疡,利用免疫印迹法观察各组下丘脑前部和延髓内脏带脑组织SYN和SYN-I的表达变化。结果 C组、T1组、T6组、T12组胃溃疡指数分别为0、7.2±0.6、13.8±1.4、29.1±3.0,两两比较均有统计学差异(P〈0.05)。与C组相比,下丘脑前部脑组织SYN和SYN-Ia伤后6 h内无明显变化(P〉0.05),伤后12 h SYN和SYN-Ia明显升高(P〈0.05);SYN-Ib伤后1 h即明显升高(P〈0.05)。与C组相比,延髓内脏带脑组织SYN伤后1 h即明显升高(P〈0.05),而SYN-Ⅰb明显降低(P〈0.05);SYN-Ⅰa伤后1 h显著增高(P〈0.05),伤后6 h达高峰,伤后12 h逐渐降低,但仍显著高于C组(P〈0.05)。结论颅脑损伤导致的应激性胃溃疡随时间延长逐渐加重;还可导致下丘脑前部和延髓内脏中枢发生突触可塑性的改变,其引起的突触传递效率的改变可能与应激性胃溃疡有关。 相似文献
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96.
Keiko Matsuoka Itaru Yanagihara Yukiko Kawazu Maho Sato Masahiro Nakayama Yukiko Nakura Nao Kanagawa Yukihiro Akeda Futoshi Fujiwara Kazutoshi Itoh Hiroaki Kawata Makoto Takeuchi 《Journal of infection and chemotherapy》2019,25(3):192-196
We report the first case of a teenage patient with chromosome 22q11.2 deletion syndrome who died of overwhelming postsplenectomy infection (OPSI) by Streptococcus pneumoniae despite appropriate prevention by pneumococcal vaccine. He had congenital heart disease and underwent several surgeries. Immunodeficiency had not been noticed clinically. Two years prior to death, splenectomy was performed for a drug-resistant idiopathic thrombocytopenic purpura and he was immunized with 23-valent pneumococcal polysaccharide vaccine (PPV23) 4 months after splenectomy. He died suddenly after a mild flu-like symptom. Autopsy was performed and OPSI was diagnosed. Blood culture was positive for S. pneumoniae. This isolated S. pneumoniae strain was serotypically un-typable by polyvalent serum agglutination test. On the contrary, multilocus sequence typing followed by DNA sequencing indicated the molecular serotype as 10A. Additional testing using monovalent and factor-specific sera confirmed the strain as serotype 10A. Ultrastructural observation of this S. pneumoniae strain showed that the polysaccharide capsule was thin and sparse. We speculate that the abnormal morphology of the capsule may have accounted for the polyvalent serum agglutination failure and may possibly be associated with severity of OPSI observed in this case. Chromosome 22q11.2 deletion syndrome is associated with certain immunodeficiency, especially susceptible to S. pneumoniae infections; however, fatal OPSI has not been reported. In addition to vaccination, prophylactic antibiotics may be necessary for these patients who are at risk of immunodeficiency. 相似文献
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99.
目的 探讨内脏脂肪指数(visceral adiposity index,VAI)与冠状动脉慢血流现象(coronary slowflow phenomenon,CSFP)的相关性,分析CSFP的病理生理特征。方法 选取2021年1月至2022年12月在东营市人民医院行冠状动脉造影显示心外膜冠状动脉无明显病变的慢血流患者75例,为CSFP组;另选取同期因心脏症状行冠状动脉造影显示冠状动脉正常的患者65例,为正常组。测量两组患者身高、体质量、腰围(WC)等一般资料,并采集血液,检测总胆固醇、低密度脂蛋白胆固醇、高密度脂蛋白胆固醇(HDL-C)、三酰甘油、空腹血糖等指标。结果 CSFP组和正常组体质量指数[(27.65±2.90) kg/m2 vs (23.99±2.3) kg/m2,P<0.001]、WC[(94.25±11.65)cm vs (83.20±5.7)cm,P<0.001]、高血压病(66.7%vs 41.5%,P=0.003)、吸烟(38.7%vs 12.3%,P<0.001)、三酰甘油[(2.49±1.04)... 相似文献
100.