摘要：
Isolation rearing induces profound behavioral and neurochemical abnormalities in rodents. However there have been many controversies with its anxiogenic-like effects using models like elevated-plus maze. In the current study we aimed to address this by using one novelty-based anxiety paradigm that has been largely overlooked in previous isolation rearing studies. We found that eight-week isolation rearing produced potent anxiogenic-like effects in novelty-induced hypophagia test in mice. We also demonstrated PSD-95 levels were elevated in the hippocampus and amygdala and reduced in the frontal cortex after social isolation. This study provides further behavioral and neurochemical evidence to support that isolation rearing can produce anxiogenic-like effects in rodents. (C) 2012 Elsevier Ireland Ltd. All rights reserved.
作者机构：
Institute of Cardiovascular Research,Key Laboratory for Atherosclerology of Hunan Province,Life Science Research Center,University of South China
摘要：
目的:研究乙型肝炎病毒(hepatitis B virus,HBV)重组腺病毒对HepG2细胞的IL-17R和接头蛋白Actl表达的影响,以及HBV对IL-17诱导NF-kB活化的影响.方法:采用实时荧光定量PCR(real-time PCR)检测HepG2细胞的IL-17、IL-17R和Actl的mRNA表达;蛋白免疫印迹法(Westem blot)检测IL-17R和Actl的蛋白表达；免疫荧光检测NF-kB核移位；ELISA检测上清的IL-17含量.结果:各组HepG2细胞培养上清液中均未检测到1L-17且亦未检测HepG2细胞有IL-17的mRNA表达；HBV重组腺病毒组的IL-17RmRNA和蛋白的表达明显低于相应浓度对照组(0.68±0.02 vs 0.89±0.03,0.33±0.06 vs0.81±0.01,0.12±0.01 vs 0.86±0.05,P＜0.05;蛋白:0.84±0.12 vs l.01±0.13,0.56±0.09vs l.01±0.08,0,24±0.08 vs 0.98±0.05),且呈剂量和时间依赖性.但HBV重组腺病毒组与对照组比较,对HepG2细胞接头蛋白Actl的mRNA和蛋白表达水平无明显影响；同时HBV重组腺病毒能抑制IL-17R诱导HepG2细胞的NF-kB活化,但HBV重组腺病毒与对照组比较,对接头蛋白Acti在mRNA和蛋白表达水平上影响无明显变化；同时HBV重组腺病毒能抑制IL- 17 R诱-导HepG2细胞的NF-kB活化,结论:HBV重组腺病毒可降低HepG2细胞的IL- 17R mRNA和蛋白的表达,抑制IL-17R诱导HepG2细胞的NF-kB活化,对HepG2细胞的IL-17R信号通路发挥抑制作用.
期刊：
BioMed Research International,2012年2012(3):510418-510429 ISSN：2314-6133
通讯作者：
Li Cui
作者机构：
[Li Cui; Chen Zhu-Chu; Xiao Zhi-Qiang; Xu Yan; Peng Fang; Duan Chao-Jun; Tang Can-E] Cent S Univ, Xiangya Hosp, Chinese Minist Hlth, Key Lab Canc Prote, Changsha 410008, Hunan, Peoples R China.;[Xu Yan] Judicial Police Gen Hosp, Changsha 410004, Hunan, Peoples R China.;[Cao Lan-Qin] Cent S Univ, Xiangya Hosp, Dept Gynecol & Obstet, Changsha 410008, Hunan, Peoples R China.;[Jin Long-Yu] Cent S Univ, Xiangya Hosp 3, Dept Cardiothorac Surg, Changsha 410013, Hunan, Peoples R China.;[Zeng Gu-Qing] Univ S China, Sch Med, Dept Gen Intro Surg, Hengyang 421001, Peoples R China.
通讯机构：
[Li Cui] C;Cent S Univ, Xiangya Hosp, Chinese Minist Hlth, Key Lab Canc Prote, Changsha 410008, Hunan, Peoples R China.
摘要：
Objective. To investigate the differential protein profile of human lung squamous carcinoma (HLSC) and normal bronchial epithelium (NBE) and provide preliminary results for further study to explore the carcinogenic mechanism of HLSC. Methods. Laser capture microdissection (LCM) was used to purify the target cells from 10 pairs of HLSC tissues and their matched NHBE, respectively. A stable-isotope labeled strategy using iTRAQ, followed by 2D-LC/Q-STAR mass spectrometry, was performed to separate and identify the differential expression proteins. Results. A total of 96 differential expression proteins in the LCM-purified HLSC and NBE were identified. Compared with NBE, 49 proteins were upregulated and 47 proteins were downregulated in HLSC. Furthermore, the expression levels of the differential proteins including HSPB1, CKB, SCCA1, S100A8, as well as S100A9 were confirmed by western blot and tissue microarray and were consistent with the results of quantitative proteomics. Conclusion. The different expression proteins in HLSC will provide scientific foundation for further study to explore the carcinogenic mechanism of HLSC.
摘要：
Background Macrophage migration inhibitory factor (MIF) is an upstream regulator in immune and inflammatory responses. However, its role in viral myocarditis remains unknown. In this study, we investigated the role of the MIF in coxsackievirus B3 (CVB3)-induced myocarditis. Methods Mice were randomized into two groups receiving either Eagle’s minimal essential medium (EMEM, control group) or virus solution (infected group). Subsets of mice in the infected group were sacrificed on days 3, 7, 14 and 28 after inoculation. Expression of MIF was detected using an enzyme-linked immunosorbent assay (ELISA), reverse transcription polymerase chain reaction and immunohistochemistry. A neutralizing antibody (Ab) to MIF was injected intraperitoneally from day 0 to 7 after inoculation. Disease severity was estimated by histopathology of the heart and by the heart weight to body weight ratio, and the interleukin-1β (IL-1β) and tumor necrosis factor α (TNF-α) in the myocardium were measured by ELISA on day 14. Results The serum MIF concentration and expression levels of myocardial MIF mRNA and protein were significantly elevated in mice on days 7 and 14 post-infection. The survival rate was markedly higher and disease severity was obviously less in mice treated with anti-MIF Ab. Furthermore, MIF blockade significantly decreased the IL-1β and TNF-α in the myocarditic heart. Conclusion These results demonstrate that MIF is an important naturally occurring inflammatory cytokine in CVB3-induced myocarditis, and anti-MIF Ab may lessen the inflammatory response.
摘要：
Ruminants harbour a complicate ecosystem consisting mostly of microorganisms which have the ability to digest the fibrous cell walls of plant materials from host's food. To discover the novel enzyme from ruminant's digestive tract for exploration of the new biofuel plant-Miscanthus sinensis, we comparatively analyzed the distribution of microbiome in the large intestine of two groups of local cattle fed with either M. sinensis [M. sinensis (+) group] or mixed forage [ M. sinensis (-) group]. Two libraries of 16S rRNA gene from intestinal microbiome of two groups of local cattle were constructed respectively, and subjected to restriction fragment length polymorphism (RFLP) and sequence analysis. After analyzing the sequences of 16S rRNA genes, our results indicated that the intestinal bacteria of M. sinensis (+) group were composed of Firmicutes (48.89%), Bacteroidetes (6.67%), rumen bacteria (10%) and uncultured bacteria (34.44%), and the intestinal bacteria of M. sinensis (-) group were composed of Firmicutes (52.87%), Bacteroidetes (1.27%), rumen bacteria (9.55%), uncultured rumen bacteria (4.46%) and uncultured bacteria (31.21%). As expected, we found that five species of potential cellulolytic becteria can only be detected in the library of M. sinensis (+). Besides, through phylogenetic tree analysis, we found that the ratio of uncultured genus which were lack of recognized sequences in M. sinensis (+) library and M. sinensis (-) library were 55.96 and 51.56%, respectively, indicating that the cattle fed on M. sinensis will produce more novel uncultured genus which probably have specific metabolic effect on decomposition of M. sinensis.
摘要：
Sphingosine-1-phosphate (S1P), which is generated from the sphingosine kinase-catalyzed phosphorylation of sphingosine, is now recognized as a critical regulator of many kinds of physiological and pathological processes, including cancer, cardiovascular function, and diabetes. It can also trigger a wide variety of biological effect, such as cell movement, differentiation, survival, inflammation, immunity, calcium homeostasis, and angiogenesis. As we know, a number of the biological effects of S1P are mediated by its binding to five specific G protein-coupled receptors located on the cell surface or intracellular targets. However, the synthesis and the secretion of S1P are regulated by various endogenetic or ectogenous stimuli and involve many kinds of enzymes and transporters. In this review, we discuss the regulation of S1P synthesis by many kinds of enzymes and mainly introduce the process of ceramide to S1P. Moreover, S1P deterioration is important balance in physiologic adjustment. We also describe the role of verified or potential transporters in S1P release in detail.
期刊：
Lipids in Health and Disease,2012年11(1):1-9 ISSN：1476-511X
通讯作者：
Fu, Mingde
作者机构：
[Tian, Li; Long, Shiyin; Liu, Yinghui; Fu, Mingde] Sichuan Univ, W China Hosp, Lab Endocrinol & Metab, Chengdu 610041, Sichuan, Peoples R China.;[Tian, Li; Liu, Yinghui; Fu, Mingde] Sichuan Univ, State Key Lab Biotherapy, Chengdu 610041, Sichuan, Peoples R China.;[Long, Shiyin] Univ S China, Dept Biochem & Mol Biol, Hengyang, Hunan, Peoples R China.;[Zeng, Zhi; Chen, Yucheng; Li, Chuanwei] Sichuan Univ, W China Hosp, Cardiovasc Dept, Chengdu 610041, Sichuan, Peoples R China.
通讯机构：
[Fu, Mingde] S;Sichuan Univ, W China Hosp, Lab Endocrinol & Metab, Chengdu 610041, Sichuan, Peoples R China.
关键词：
Coronary heart disease;High density lipoprotein subclasses;Diabetic mellitus;Fasting plasma glucose
摘要：
A higher prevalence of coronary heart disease (CHD) in people with diabetes. We investigated the high-density lipoprotein (HDL) subclass profiles and alterations of particle size in CHD patients with diabetes or without diabetes. Plasma HDL subclasses were quantified in CHD by 1-dimensional gel electrophoresis coupled with immunodetection. Although the particle size of HDL tend to small, the mean levels of low density lipoprotein cholesterol(LDL-C) and total cholesterol (TC) have achieved normal or desirable for CHD patients with or without diabetes who administered statins therapy. Fasting plasma glucose (FPG), triglyceride (TG), TC, LDL-C concentrations, and HDL3 (HDL3b and 3a) contents along with Gensini Score were significantly higher; but those of HDL-C, HDL2b+preβ2, and HDL2a were significantly lower in CHD patients with diabetes versus CHD patients without diabetes; The preβ1-HDL contents did not differ significantly between these groups. Multivariate regression analysis revealed that Gensini Score was significantly and independently predicted by HDL2a, and HDL2b+preβ2. The abnormality of HDL subpopulations distribution and particle size may contribute to CHD risk in diabetes patients. The HDL subclasses distribution may help in severity of coronary artery and risk stratification, especially in CHD patients with therapeutic LDL, TG and HDL levels.
