狼疮性肾炎患者血脂和血清脂蛋白的检测及其临床意义     

黄志清  许勇芝  唐德燊 《湛江医学院学报》2005,23(2):125-127

目的:观察狼疮性肾炎(L N)患者血脂及血清脂蛋白(а) [L p(а) ]水平的变化。方法:检测狼疮性肾炎组(L N组,n=4 9)、正常对照组(正常组,n=30 )、原发性肾病综合征组(PNS组,n=30 )的血脂及L p(а)水平,同时对L N组不同病理类型及不同临床分型的血脂及L p(а)水平进行比较。结果:L N组血脂及L p(а)水平显著高于正常组(P<0 .0 1) ,但血脂及L p(a)增高的水平低于PNS组(P<0 .0 1)。L N组不同病理类型间血脂及L p(a)水平的比较差异无显著性(P>0 .0 5 )。肾病综合征型的L N与其它类型的L N相比,胆固醇(TC)水平差异有显著性(P<0 .0 5 ) ,其它指标差异无显著性(P>0 .0 5 )。结论:L N患者血脂及L p(а)水平升高的程度虽低于PNS,但其危险性应予充分认识。  相似文献   

2型糖尿病中医六经辨证与临床生化指标的关系          下载免费PDF全文

汤丽婷  吴浩祥 《勤云标准版测试》2019,39(3):362-366

目的 探讨2型糖尿病六经辨证分型与临床相关生化指标之间的关系。方法 收集2型糖尿病患者184例,非糖尿病住院患者30例作为对照组。记录患者六经辨证分型、年龄、病程、体质量指数（BMI）、空腹血糖（FPG）、糖化血红蛋白（HbA1c）、甘油三酯（TG）、胆固醇（TC）、低密度脂蛋白胆固醇（LDL-C）、高密度脂蛋白胆固醇（HDL-C）、空腹胰岛素（FINS）、空腹C肽（C-P）,并分析不同证型之间指标的关系。结果 2型糖尿病分型以少阴证最多见（52.17%）,且年龄最大,与其他证型比较差异具有统计学意义（P<0.05）;少阴证病程较长,与阳明证相比差异具有统计学意义（P<0.05）;少阴证、少阳证、阳明证HDL-C均低于对照组,LDL-C均高于对照组,所有证型组TG均高于对照组,其中少阴证、少阳证HDL-C高于阳明证,少阴证TG高于少阳证,差异均具有统计学意义（P<0.05）。结论 2型糖尿病患者尤其是年长及病程较久患者,治疗上应注重温阳散寒;不同证型的HDL-C、TG水平不同,对糖尿病六经辨证治疗具有一定参考价值;少阴证、少阳证、阳明证型患者在治疗上应注重调脂治疗。  相似文献   

产蛋鸡卵母细胞卵黄生成受体(OVR)的研究进展     

崔学平  陈代文  张克英 《饲料工业》2007,28(9):17-20

OVR介导大量的血浆蛋白被产蛋鸡吸收到生长的卵母细胞中,是卵黄前体进入卵母细胞的瓶颈。到目前为止发现它不仅与最丰富、最重要的卵黄前体极低密度脂蛋白(VLDL)、卵黄蛋白原(VTG)结合,还结合丛生蛋白、α2-巨球蛋白(α2-M)、受体相关蛋白(RAP)、乳铁蛋白、核黄素结合蛋白(ribBP)等,这些成分占蛋黄干物质的绝大部分。OVR发生突变的蛋鸡,不能繁殖,并且具有严重的高脂血症。它所内吞的VLDL的数量是蛋黄胆固醇含量的决定因素,因此期望通过调控OVR来控制蛋黄胆固醇的含量。  相似文献   

Lipoprotein cholesterol and triglyceride concentrations associated with dog body condition score; effect of recommended fasting duration on sample concentrations in Japanese private clinics     

Shiho USUI  Hidemi YASUDA  Yuzo KOKETSU 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2015,77(9):1063-1069

The objectives of this study were to survey clinics’ guidance about recommended fasting duration (FD) prior to lipoprotein analysis, and to characterize lipoprotein cholesterol and triglyceride concentrations in obese and overweight dogs categorized on the basis of the 5-point body condition score (BCS) scale. A dataset was created from lipoprotein analysis medical records of 1,538 dogs from 75 breeds in 354 clinics from 2012 to 2013. A phone survey was conducted to obtain the clinics’ FD. Two-level linear mixed-effects models were applied to the data. Over 50% of the clinics said they recommended fasting for 12 hr or more. Dogs in clinics with FD 12 hr or more had lower chylomicron triglyceride concentrations than those in clinics with FD less than 8 hr (P=0.05). Mean (± SEM) BCS at sampling was 3.7 ± 0.02. Obese and overweight dogs had higher very low density lipoprotein (VLDL) and high density lipoprotein (HDL) cholesterol and triglyceride concentrations than ideal dogs (P<0.05), but no such difference was found for low density lipoprotein cholesterol and triglyceride concentrations (P≥0.07). Across all BCS, as dog age rose from 0 to 8 years old, HDL cholesterol concentrations decreased by 13.5 mg/dl, whereas VLDL triglyceride concentrations increased by 81.7 mg/dl (P<0.05). In conclusion, FD of 8 hr or less may affect lipoprotein lipid concentrations. Obese and overweight dogs were characterized as having high VLDL and HDL cholesterol and triglyceride concentrations.  相似文献   

Relationship between HDL subclass distribution and plasma glucose and lipid levels in patients with metabolic syndrome     

QIU Meng-xia  LONG Shi-yin  CHEN Zhi-jun  CHEN Hao  CHEN Wu-zhe  ZHU Yan  MA Yan-ni  ZHANG Cai-ping  TIAN Ying 《园艺学报》2015,31(2):319-324

AIM: To investigate high-density lipoprotein(HDL) subclass distribution and to analyze the relationship between HDL subclasses with plasma glucose and lipids in metabolic syndrome(MS). METHODS: Apolipoprotein A-I(apoA-I) contents of plasma HDL subclasses were determined by two-dimensional gel electrophoresis associated with immunodetection. The concentrations of lipids and apolipoproteins in the plasma were measured by an automated biochemical analyzer. RESULTS: Compared with the controls, the levels of fasting plasma glucose(FPG), total cholesterol(TC), triglyceride(TG), low-density lipoprotein cholesterol(LDL-C), LDL-C/high-density lipoprotein cholesterol(HDL-C), apolipoprotein B₁₀₀(apoB₁₀₀), apoB₁₀₀/apoA-I, systolic blood pressure(SBP), body mass index(BMI) and HDL_3b were increased in the MS patients(P<0.05). Meanwhile, HDL-C, apoA-I and preβ₂-HDL, HDL_2a and HDL_2b were decreased in the MS patients(P<0.01). With the increase in the plasma glucose level, the contents of HDL_2a and HDL_2b were decreased in the MS patients(P<0.05), while preβ₁-HDL was increased(P<0.05). With the decrease in the HDL-C level, the content of HDL_2b was decreased in the MS patients(P<0.01), while preβ₁-HDL was increased(P<0.01). With the increase in the TG level and the decrease in the HDL-C level, the content of HDL_2b had a decreasing trend and the content of small-particle preβ₁-HDL had an increasing trend, indicating that HDL maturation metabolism was disrupted. The correlation analysis showed that FPG was negatively correlated with the levels of HDL_2a and HDL_2b, HDL-C was negatively correlated with the level of preβ₁-HDL and positively correlated with the level of HDL_2b, and TG was positively correlated with the levels of preβ₁-HDL and HDL_3b. CONCLUSION: With the increases in the plasma glucose and TG, and the decrease in HDL-C in the MS patients, HDL particles have minifying tendency, and the maturation metabolism of HDL particles is disrupted.  相似文献   

Apolipoprotein A-I mimetic peptide D4F protects macrophages from oxidized low-density lipoprotein-induced apoptosis by inhibiting caspase-12     

TIAN Hua  LI Yan-yan  DING Ming-de  YANG Na-na  JIAO Peng  SANG Hui  FANG Yong-qi  YAO Shu-tong  QIN Shu-cun 《园艺学报》2015,31(10):1750-1755

AIM: To investigate the effect of D4F, an apolipoprotein A-I mimetic peptide, on oxidized low-density lipoprotein (ox-LDL)-induced macrophage apoptosis and activation of caspase-12, a key molecule in endoplasmic reticulum stress (ERS)-associated apoptotic pathway, and to elucidate the underlying molecular mechanisms. METHODS: RAW264.7 macrophages were pretreated with D4F (12.5, 25 and 50 mg/L), 4-phenylbutyric acid (PBA, 5 mmol/L) or diphenyleneiodonium (DPI, 5 μmol/L) for 1 h and then treated with ox-LDL (100 mg/L) or tunicamycin (TM, 4 mg/L) for 24 h. The cell viability and apoptosis were determined by MTT assay and TUNEL detection, respectively. The levels of malondialdehyde (MDA) and reactive oxygen species (ROS) in the cells and the activities of superoxide dismutase (SOD) and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase were determined. The protein level of caspase-12 was examined by Western blot analysis. RESULTS: Similar to the ERS inhibitor PBA, D4F protected RAW264.7 macrophages from ox-LDL or TM (an ERS inducer)-induced decrease in the viability and increase in apoptotic rate in a dose-dependent manner. Like DPI (an oxidative stress inhibitor), D4F significantly inhibited ox-LDL-induced oxidative stress, as expressed by the decreased generation of ROS and MDA (P <0.01), the increased activity of SOD and the decreased activity of NADPH oxidase (P <0.05). Moreover, similar to PBA and DPI, D4F significantly suppressed ox-LDL-induced activation of caspase-12 in a concentration-dependent manner (P <0.05). Furthermore, D4F also inhibited the caspase-12 activation induced by TM (P <0.05). CONCLUSION: D4F inhibits macrophage apoptosis induced by ox-LDL, and the mechanism is at least partially by reducing oxidative stress and inhibiting the activation of caspase-12.  相似文献   

Oxidized low-density lipoprotein induces autophagy in macrophages via CD36-mediated oxidative stress     

YAO Shu-tong  LI Yan-yan  LIU Qing-hua  YUE Feng  TIAN Hua  SANG Hui  YANG Na-na  QIN Shu-cun 《园艺学报》2015,31(6):1002-1007

AIM: To investigate the effect of oxidized low-density lipoprotein (ox-LDL) on autophagy in macrophages and the underlying molecular mechanisms. METHODS: RAW264.7 macrophages were pretreated with 2 mg/L anti-CD36 monoclonal antibody (anti-CD36 mAb), 5 μmol/L diphenyleneiodonium (DPI), 3 mmol/L 3-methyladenine (3-MA) or 1 μmol/L rapamycin for 1 h and then treated with ox-LDL (100 mg/L) for 12 h. The viability of the cells was measured by MTT assay. The activities of lactic dehydrogenase (LDH) in the medium and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase, superoxide dismutase (SOD) in the cells as well as the levels of intracellular reactive oxygen species (ROS) and malondialdehyde (MDA) were determined to characterize the membrane integrity and the oxidative stress, respectively. The protein levels of beclin-1 and microtubule-associated protein 1 light chain 3-II (LC3-II), 2 important molecular markers of autophagy, were examined by Western blotting. RESULTS: ox-LDL induced autophagy in RAW264.7 macrophages as assessed by upregulation of beclin-1 and LC3-II. Similar to 3-MA, an autophagy inhibitor, anti-CD36 mAb significantly inhibited the ox-LDL-induced upregulation of beclin-1 and LC3-II. Anti-CD36 mAb suppressed the ox-LDL-induced oxidative stress as revealed by decreased NADPH oxidase activation, ROS and MDA generation as well as increased SOD activity. Similar results were observed in the cells pretreated with DPI, a NADPH oxidase inhibitor. Moreover, DPI significantly inhibited the ox-LDL-induced upregulation of beclin-1 and LC3-II. Inaddition, the decrease in the cell viability and increase in LDH release induced by ox-LDL were promoted by 3-MA and blocked by rapamycin (an autophagy inducer). CONCLUSION: ox-LDL induces autophagy in RAW264.7 macrophages, which may be involved in CD36-mediated ox-LDL uptake and subsequent activation of oxidative stress, and moderate activation of autophagy may protect macrophages from ox-LDL-induced injury.  相似文献   

Autophagy protects macrophages from oxidized low-density lipoprotein-induced apoptosis by inhibiting C/EBP homologous protein expression     

TIAN Hua  MA Shou-yuan  KANG Pan-pan  HAO Qi  JIAO Peng  SHAO Xia-yan  XU Xiao-yan  QIN Shu-cun  YAO Shu-tong 《园艺学报》2016,32(12):2192-2198

AIM: To investigate the protective effect of autophagy on oxidized low density lipoprotein (ox-LDL)-induced macrophage apoptosis and the underlying molecular mechanisms. METHODS: The RAW264.7 macrophages were pretreated with 3 mmol/L 3-methyladenine (3-MA), 1 μmol/L rapamycin (Rap) or 4 mmol/L 4-phenylbutyric acid (PBA) respectively for 1 h and then treated with ox-LDL (100 mg/L) for 12 h. The cell viability and apoptosis were determined by MTT assay and flow cytometry with Annexin V-FITC/PI staining, respectively. The activities of lactate dehydrogenase (LDH) in the medium and caspase-3 in the cells were determined by detection kits. The protein levels of beclin-1 (a molecular marker of autophagy), glucose-regulated protein 78 (GRP78, an endoplasmic reticulum stress marker) and C/EBP homologous protein (CHOP, a key-signaling component of endoplasmic reticulum stress-induced apoptosis) were examined by Western blot. Microtubule-associated protein 1 light chain 3 (LC3, another molecular marker of autophagy) was observed under laser scanning confocal microscope.RESULTS: Treatment of the RAW264.7 macrophages with ox-LDL at 100 mg/L for 12 h resulted in significant decrease in cell viability, and dramatic elevation in LDH leakage, cell apoptosis and caspase-3 activity, which were promoted by 3-MA (an autophagy inhibitor) and inhibited by Rap (an autophagy inducer). ox-LDL induced autophagy in the macrophages as assessed by beclin-1 upregulation and frequent granulation of LC3, which were inhibited by 3-MA and promoted by Rap. Interestingly, 3-MA enhanced, while Rap blocked, the CHOP upregulation induced by ox-LDL. Moreover, PBA (endoplasmic reticulum stress inhibitor) significantly inhibited ox-LDL-induced GRP78 upregulation and autophagy as determined by the attenuation of beclin-1 upregulation and frequent granulation of LC3. CONCLUSION: Endoplasmic reticulum stress mediates ox-LDL-induced autophagy in macrophages, and moderates activation of autophagy may protect macrophages from ox-LDL-induced apoptosis by inhibiting CHOP expression.  相似文献   

Impact of hyperlipidaemia on intermediary metabolism,faecal microbial metabolites and urinary characteristics of lipoprotein lipase deficient vs. normal cats          下载免费PDF全文

N. Paßlack  J. Zentek  J. A. Larsen  J. L. Westropp  A. J. Fascetti 《Journal of animal physiology and animal nutrition》2018,102(1):e139-e146

Findings in humans and rats indicate that hyperlipidaemia may be associated with enhanced endogenous oxalate (Ox) synthesis, which may be relevant for calcium oxalate (CaOx) urolith formation. Moreover, changes in lipid metabolism are proposed to negatively affect gut microbiota. This study aimed to investigate those potential interactions in hyperlipidaemic cats. Therefore, 10 normal control cats and seven lipoprotein lipase (LPL)‐deficient cats were fed a low‐fat diet for seven weeks. During the last week of the study, cats were housed in metabolic cages to collect urine and faeces. Blood was taken on the last day of the study. The LPL‐deficient cats had significantly higher serum triglyceride concentrations than normal cats, while lactate dehydrogenase (LDH) activity was not different. Urinary relative supersaturation with CaOx, urinary Ox, calcium, and citrate excretions, and urine pH did not differ between groups. Lower faecal acetic, propionic and total short‐chain fatty acid concentrations were observed in the LPL‐deficient cats. In conclusion, hyperlipidaemia does not appear to be a specific risk factor for CaOx urolith formation in cats. In contrast to results in rats, hyperlipidaemia was not accompanied by elevated serum LDH activity. As LDH can synthesise Ox from glycolate or other precursors, this might be one possible explanation for the similar urinary parameters in the LPL‐deficient and normal cats. Non‐diet‐induced hyperlipidaemia was not associated with marked changes in faecal microbial metabolites, suggesting no differences in the composition of the intestinal microbiota.  相似文献   

性早熟前后中华绒螯蟹血淋巴中总蛋白和高密度脂蛋白水平的比较     

陈再忠  成永旭王武 《上海海洋大学学报》2005,14(4):460-463

研究发现,在进入卵巢快速发育期后,斑节对虾(Penaeus monodon)卵巢中甘油三脂(TG)、磷脂酰乙醇胺(PE)和磷脂酰胆碱(PC)含量都有所升高,而与此同时,肝胰腺中的脂类(主要是TG及PC)含量却下降[1]。这说明,在卵母细胞发育期间,肝胰腺中有一部分脂类转运到了卵巢。由于脂类不溶于水,  相似文献