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Treatment of Diabetic Mice with a Combination of Ketogenic Diet and Aerobic Exercise via Modulations of PPARs Gene Programs. 通过调节PPARs基因程序,结合生酮饮食和有氧运动治疗糖尿病小鼠。
IF 2.9 3区 医学
PPAR Research Pub Date : 2018-03-20 eCollection Date: 2018-01-01 DOI: 10.1155/2018/4827643
Qiang Zhang, Lingyan Xu, Jie Xia, Dongmei Wang, Min Qian, Shuzhe Ding
{"title":"Treatment of Diabetic Mice with a Combination of Ketogenic Diet and Aerobic Exercise via Modulations of PPARs Gene Programs.","authors":"Qiang Zhang, Lingyan Xu, Jie Xia, Dongmei Wang, Min Qian, Shuzhe Ding","doi":"10.1155/2018/4827643","DOIUrl":"10.1155/2018/4827643","url":null,"abstract":"<p><p>Type 2 diabetes is a prevalent chronic disease arising as a serious public health problem worldwide. Diet intervention is considered to be a critical strategy in glycemic control of diabetic patients. Recently, the low-carbohydrate ketogenic diet is shown to be effective in glycemic control and weight loss. However, hepatic lipid accumulation could be observed in mice treated with ketogenic diet. On the other hand, exercise is a well-known approach for treating nonalcoholic fatty liver disease. We thus hypothesize that the combination of ketogenic diet and exercise could improve insulin sensitivity, while minimizing adverse effect of hepatic steatosis. In order to test this hypothesis, we established diabetic mice model with streptozotocin (STZ) and divided them into control group, ketogenic diet group, and ketogenic diet with aerobic exercise group. We found that after six weeks of intervention, mice treated with ketogenic diet and ketogenic diet combined with exercise both have lower body weights, HbAlc level, HOMA index, and improvements in insulin sensitivity, compared with diabetes group. In addition, mice in ketogenic diet intervention exhibited hepatic steatosis shown by serum and hepatic parameters, as well as histochemistry staining in the liver, which could be largely relieved by exercise. Furthermore, gene analysis revealed that ketogenic diet in combination with exercise reduced PPAR<i>γ</i> and lipid synthetic genes, as well as enhancing PPAR<i>α</i> and lipid <i>β</i>-oxidation gene program in the liver compared to those in ketogenic diet without exercise. Overall, the present study demonstrated that the combination of ketogenic diet and a moderate-intensity aerobic exercise intervention improved insulin sensitivity in diabetic mice, while avoiding hepatic steatosis, which provided a novel strategy in the combat of diabetes.</p>","PeriodicalId":20439,"journal":{"name":"PPAR Research","volume":"2018 ","pages":"4827643"},"PeriodicalIF":2.9,"publicationDate":"2018-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2018/4827643","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36083798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 27
High Glucose Induces Autophagy through PPARγ-Dependent Pathway in Human Nucleus Pulposus Cells. 高糖通过ppar γ依赖途径诱导人髓核细胞自噬。
IF 2.9 3区 医学
PPAR Research Pub Date : 2018-03-01 eCollection Date: 2018-01-01 DOI: 10.1155/2018/8512745
Chang Jiang, Shuhao Liu, Yuanwu Cao, Hongping Shan
{"title":"High Glucose Induces Autophagy through PPAR<i>γ</i>-Dependent Pathway in Human Nucleus Pulposus Cells.","authors":"Chang Jiang,&nbsp;Shuhao Liu,&nbsp;Yuanwu Cao,&nbsp;Hongping Shan","doi":"10.1155/2018/8512745","DOIUrl":"https://doi.org/10.1155/2018/8512745","url":null,"abstract":"<p><p>Diabetes mellitus is a multiorgan disorder affecting many types of connective tissues, including bone and cartilage. High glucose could accelerate the autophagy in nucleus pulposus (NP) cells. In our present study, we investigated whether peroxisome proliferator-activated receptor <i>γ</i> (PPAR-<i>γ</i>) pathway is involved into autophagy regulation in NP cells under high glucose condition. After NP cells were treated with different high glucose concentrations for 72 hours, the rate of autophagy increased. Moreover, the levels of PPAR<i>γ</i>, Beclin-1, and LC3II were significantly increased and p62 was significantly decreased compared to control group. Then, NP cells were treated with high glucose plus PPAR<i>γ</i> agonist or PPAR<i>γ</i> antagonist, respectively. The rate of autophagy and the levels of Beclin-1 and LC3II increased, but p62 decreased when PPAR<i>γ</i> agonist was used. On the contrary, the rate of autophagy and the levels of Beclin-1 and LC3II decreased, while p62 increased when PPAR<i>γ</i> antagonist was added. These results suggested that autophagy induced by high glucose in NP cells was through PPAR<i>γ</i>-dependent pathway.</p>","PeriodicalId":20439,"journal":{"name":"PPAR Research","volume":"2018 ","pages":"8512745"},"PeriodicalIF":2.9,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2018/8512745","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36036571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
PPARγ Antagonizes Hypoxia-Induced Activation of Hepatic Stellate Cell through Cross Mediating PI3K/AKT and cGMP/PKG Signaling. PPARγ通过交叉介导PI3K/AKT和cGMP/PKG信号通路拮抗缺氧诱导的肝星状细胞活化。
IF 2.9 3区 医学
PPAR Research Pub Date : 2018-03-01 eCollection Date: 2018-01-01 DOI: 10.1155/2018/6970407
Qinghui Zhang, Shihao Xiang, Qingqian Liu, Tao Gu, Yongliang Yao, Xiaojie Lu
{"title":"PPAR<i>γ</i> Antagonizes Hypoxia-Induced Activation of Hepatic Stellate Cell through Cross Mediating PI3K/AKT and cGMP/PKG Signaling.","authors":"Qinghui Zhang,&nbsp;Shihao Xiang,&nbsp;Qingqian Liu,&nbsp;Tao Gu,&nbsp;Yongliang Yao,&nbsp;Xiaojie Lu","doi":"10.1155/2018/6970407","DOIUrl":"https://doi.org/10.1155/2018/6970407","url":null,"abstract":"<p><strong>Background and aims: </strong>Accumulating evidence reveals that PPAR<i>γ</i> plays a unique role in the regulation of hepatic fibrosis and hepatic stellate cells (HSCs) activation. This study was aimed at investigating the role of PPAR<i>γ</i> in hypoxia-induced hepatic fibrogenesis and its possible mechanism.</p><p><strong>Methods: </strong>Rats used for CCl4-induced hepatic fibrosis model were exposed to hypoxia for 8 hours each day. Rats exposed to hypoxia were treated with or without the PPAR<i>γ</i> agonist rosiglitazone. Liver sections were stained with HE and Sirius red staining 8 weeks later. HSCs were exposed to hypoxic environment in the presence or absence of rosiglitazone, and expression of PPAR<i>γ</i> and two fibrosis markers, <i>α</i>-SMA and desmin, were measured using western blot and immunofluorescence staining. Next, levels of PPAR<i>γ</i>, <i>α</i>-SMA, and desmin as well as PKG and cGMP activity were detected using PI3K/AKT and a cGMP activator or inhibitor.</p><p><strong>Results: </strong>Hypoxia promoted the induction and progress of hepatic fibrosis and HSCs activation. Meanwhile, rosiglitazone significantly antagonized the effects induced by hypoxia. Signaling by sGC/cGMP/PKG promoted the inhibitory effect of PPAR<i>γ</i> on hypoxia-induced activation of HSCs. Moreover, PI3K/AKT signaling or PDE5 blocked the above response of PPAR<i>γ</i>.</p><p><strong>Conclusion: </strong>sGC/cGMP/PKG and PI3K/AKT signals act on PPAR<i>γ</i> synergistically to attenuate hypoxia-induced HSC activation.</p>","PeriodicalId":20439,"journal":{"name":"PPAR Research","volume":"2018 ","pages":"6970407"},"PeriodicalIF":2.9,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2018/6970407","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36036570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 20
Research Advances in the Correlation between Peroxisome Proliferator-Activated Receptor-γ and Digestive Cancers. 过氧化物酶体增殖物激活受体-γ与消化道肿瘤相关性研究进展。
IF 2.9 3区 医学
PPAR Research Pub Date : 2018-02-01 eCollection Date: 2018-01-01 DOI: 10.1155/2018/5289859
Shuqi Xu, Xuanfu Xu
{"title":"Research Advances in the Correlation between Peroxisome Proliferator-Activated Receptor-<i>γ</i> and Digestive Cancers.","authors":"Shuqi Xu,&nbsp;Xuanfu Xu","doi":"10.1155/2018/5289859","DOIUrl":"https://doi.org/10.1155/2018/5289859","url":null,"abstract":"<p><p>Peroxisome proliferator-activated receptor-<i>γ</i> (PPAR<i>γ</i>) is a class of ligand-activated nuclear transcription factors, which is a member of type II nuclear receptor superfamily. Previous studies demonstrate that PPAR<i>γ</i> is expressed in a variety of tumor tissues and is closely associated with the proliferation and prognosis of digestive system tumors by its roles in mediation of cell differentiation, induction of cell apoptosis, and inhibition of cell proliferation.</p>","PeriodicalId":20439,"journal":{"name":"PPAR Research","volume":"2018 ","pages":"5289859"},"PeriodicalIF":2.9,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2018/5289859","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35864431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Portulaca Extract Attenuates Development of Dextran Sulfate Sodium Induced Colitis in Mice through Activation of PPARγ. 马齿苋提取物通过激活PPARγ减轻硫酸葡聚糖钠诱导小鼠结肠炎的发展。
IF 2.9 3区 医学
PPAR Research Pub Date : 2018-02-01 eCollection Date: 2018-01-01 DOI: 10.1155/2018/6079101
Rui Kong, Hui Luo, Nan Wang, Jingjing Li, Shizan Xu, Kan Chen, Jiao Feng, Liwei Wu, Sainan Li, Tong Liu, Xiya Lu, Yujing Xia, Yanhong Shi, Yingqun Zhou, Weigang He, Qi Dai, Yuejuan Zheng, Jie Lu
{"title":"<i>Portulaca</i> Extract Attenuates Development of Dextran Sulfate Sodium Induced Colitis in Mice through Activation of PPAR<i>γ</i>.","authors":"Rui Kong,&nbsp;Hui Luo,&nbsp;Nan Wang,&nbsp;Jingjing Li,&nbsp;Shizan Xu,&nbsp;Kan Chen,&nbsp;Jiao Feng,&nbsp;Liwei Wu,&nbsp;Sainan Li,&nbsp;Tong Liu,&nbsp;Xiya Lu,&nbsp;Yujing Xia,&nbsp;Yanhong Shi,&nbsp;Yingqun Zhou,&nbsp;Weigang He,&nbsp;Qi Dai,&nbsp;Yuejuan Zheng,&nbsp;Jie Lu","doi":"10.1155/2018/6079101","DOIUrl":"https://doi.org/10.1155/2018/6079101","url":null,"abstract":"<p><p><i>Portulaca oleracea</i> L. is a traditional Chinese medicine, which has been used as adjuvant therapy for inflammatory bowel disease (IBD). However, the mechanism of its activity in IBD still remains unclear. Since previous studies have documented the anti-inflammatory effect of peroxisome proliferator activated receptors-<i>γ</i> (PPAR-<i>γ</i>), <i>Portulaca</i> regulation of PPAR-<i>γ</i> in inflammation was examined in current study. Ulcerative colitis (UC) was generated by 5% dextran sulfate sodium (DSS) in mice and four groups were established as normal control, DSS alone, DSS plus mesalamine, and DSS plus <i>Portulaca</i>. Severity of UC was evaluated by body weight, stool blood form, and length of colorectum. Inflammation was examined by determination of inflammatory cytokines (TNF-a, IL-6, and IL-1a). <i>Portulaca</i> extract was able to attenuate development of UC in DSS model similar to the treatment of mesalazine. Moreover, <i>Portulaca</i> extract inhibited proinflammatory cytokines release and reduced the level of DSS-induced NF-<i>κ</i>B phosphorylation. Furthermore, <i>Portulaca</i> extract restored PPAR-<i>γ</i> level, which was reduced by DSS. In addition, <i>Portulaca</i> extract protected DSS induced apoptosis in mice. In conclusion, <i>Portulaca</i> extract can alleviate colitis in mice through regulation of inflammatory reaction, apoptosis, and PPAR-<i>γ</i> level; therefore, <i>Portulaca</i> extract can be a potential candidate for the treatment of IBD.</p>","PeriodicalId":20439,"journal":{"name":"PPAR Research","volume":"2018 ","pages":"6079101"},"PeriodicalIF":2.9,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2018/6079101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35864432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 26
Peroxisome Proliferator-Activated Receptor γ and PGC-1α in Cancer: Dual Actions as Tumor Promoter and Suppressor. 过氧化物酶体增殖物激活受体γ和PGC-1α在癌症中的双重作用:肿瘤启动子和抑制子。
IF 2.9 3区 医学
PPAR Research Pub Date : 2018-01-21 eCollection Date: 2018-01-01 DOI: 10.1155/2018/6727421
Seong-Hoon Yun, Sang-Heum Han, Joo-In Park
{"title":"Peroxisome Proliferator-Activated Receptor <i>γ</i> and PGC-1<i>α</i> in Cancer: Dual Actions as Tumor Promoter and Suppressor.","authors":"Seong-Hoon Yun,&nbsp;Sang-Heum Han,&nbsp;Joo-In Park","doi":"10.1155/2018/6727421","DOIUrl":"https://doi.org/10.1155/2018/6727421","url":null,"abstract":"<p><p>Peroxisome proliferator-activated receptor <i>γ</i> (PPAR<i>γ</i>) is part of a nuclear receptor superfamily that regulates gene expression involved in cell differentiation, proliferation, immune/inflammation response, and lipid metabolism. PPAR<i>γ</i> coactivator-1<i>α</i> (PGC-1<i>α</i>), initially identified as a PPAR<i>γ</i>-interacting protein, is an important regulator of diverse metabolic pathways, such as oxidative metabolism and energy homeostasis. The role of PGC-1<i>α</i> in diabetes, neurodegeneration, and cardiovascular disease is particularly well known. PGC-1<i>α</i> is also now known to play important roles in cancer, independent of the role of PPAR<i>γ</i> in cancer. Though many researchers have studied the expression and clinical implications of PPAR<i>γ</i> and PGC-1<i>α</i> in cancer, there are still many controversies about the role of PPAR<i>γ</i> and PGC-1<i>α</i> in cancer. This review examines and summarizes some recent data on the role and action mechanisms of PPAR<i>γ</i> and PGC-1<i>α</i> in cancer, respectively, particularly the recent progress in understanding the role of PPAR<i>γ</i> in several cancers since our review was published in 2012.</p>","PeriodicalId":20439,"journal":{"name":"PPAR Research","volume":"2018 ","pages":"6727421"},"PeriodicalIF":2.9,"publicationDate":"2018-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2018/6727421","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35961728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 41
Vascular Remodeling, Oxidative Stress, and Disrupted PPARγ Expression in Rats of Long-Term Hyperhomocysteinemia with Metabolic Disturbance. 长期高同型半胱氨酸血症伴代谢紊乱大鼠的血管重塑、氧化应激和 PPARγ 表达紊乱
IF 3.5 3区 医学
PPAR Research Pub Date : 2018-01-15 eCollection Date: 2018-01-01 DOI: 10.1155/2018/6738703
Yajing Huo, Xuqing Wu, Jing Ding, Yang Geng, Weiwei Qiao, Anyan Ge, Cen Guo, Jianing Lv, Haifeng Bao, Wei Fan
{"title":"Vascular Remodeling, Oxidative Stress, and Disrupted PPAR<i>γ</i> Expression in Rats of Long-Term Hyperhomocysteinemia with Metabolic Disturbance.","authors":"Yajing Huo, Xuqing Wu, Jing Ding, Yang Geng, Weiwei Qiao, Anyan Ge, Cen Guo, Jianing Lv, Haifeng Bao, Wei Fan","doi":"10.1155/2018/6738703","DOIUrl":"10.1155/2018/6738703","url":null,"abstract":"<p><p>Hyperhomocysteinemia, a risk factor for vascular disease, is associated with metabolic syndrome. Our study was aimed at exploring the effect of long-term hyperhomocysteinemia with metabolic disturbances on vascular remodeling. We also studied oxidative stress and expression of PPAR<i>γ</i> in the coronary arteriole as a possible mechanism underlying vascular remodeling. Rats were treated with standard rodent chow (Control) or diet enriched in methionine (Met) for 48 weeks. Plasma homocysteine, blood glucose, serum lipids, malondialdehyde (MDA), superoxide dismutase (SOD), and nitric oxide (NO) levels were measured. Coronary arteriolar and carotid arterial remodeling was assessed by histomorphometric techniques and the expression of PPAR<i>γ</i> in vessel wall was investigated. In Met group, an increase in the level of fasting blood glucose, serum triglyceride, total cholesterol, MDA, and NO, a decline in the serum SOD level, and increased collagen deposition in coronary and carotid arteries were found. Moreover, we detected decreased expression of PPAR<i>γ</i> in the coronary arterioles in Met group. In summary, our study revealed metabolic disturbances in this model of long-term hyperhomocysteinemia together with vascular remodeling and suggested that impaired oxidative stress, endothelium dysfunction, and decreased PPAR<i>γ</i> expression in the vessel wall could be underlying mechanisms.</p>","PeriodicalId":20439,"journal":{"name":"PPAR Research","volume":"2018 ","pages":"6738703"},"PeriodicalIF":3.5,"publicationDate":"2018-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5820553/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35924883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quercetin and Quercetin-Rich Red Onion Extract Alter Pgc-1α Promoter Methylation and Splice Variant Expression 槲皮素和富含槲皮素的红洋葱提取物改变Pgc-1α启动子甲基化和剪接变异表达
IF 2.9 3区 医学
PPAR Research Pub Date : 2017-01-16 DOI: 10.1155/2017/3235693
Prasad P. Devarshi, Aarin D Jones, E. Taylor, B. Stefańska, T. Henagan
{"title":"Quercetin and Quercetin-Rich Red Onion Extract Alter Pgc-1α Promoter Methylation and Splice Variant Expression","authors":"Prasad P. Devarshi, Aarin D Jones, E. Taylor, B. Stefańska, T. Henagan","doi":"10.1155/2017/3235693","DOIUrl":"https://doi.org/10.1155/2017/3235693","url":null,"abstract":"Pgc-1α and its various isoforms may play a role in determining skeletal muscle mitochondrial adaptations in response to diet. 8 wks of dietary supplementation with the flavonoid quercetin (Q) or red onion extract (ROE) in a high fat diet (HFD) ameliorates HFD-induced obesity and insulin resistance in C57BL/J mice while upregulating Pgc-1α and increasing skeletal muscle mitochondrial number and function. Here, mice were fed a low fat (LF), high fat (HF), high fat plus quercetin (HF + Q), or high fat plus red onion extract (HF + RO) diet for 9 wks and skeletal muscle Pgc-1α isoform expression and DNA methylation were determined. Quantification of various Pgc-1α isoforms, including isoforms Pgc-1α-a, Pgc-1α-b, Pgc-1α-c, Pgc-1α4, total NT-Pgc-1α, and FL-Pgc-1α, showed that only total NT-Pgc-1α expression was increased in LF, HF + Q, and HF + RO compared to HF. Furthermore, Q supplementation decreased Pgc-1α-a expression compared to LF and HF, and ROE decreased Pgc-1α-a expression compared to LF. FL-Pgc-1α was decreased in HF + Q and HF + RO compared to LF and HF. HF exhibited hypermethylation at the −260 nucleotide (nt) in the Pgc-1α promoter. Q and ROE prevented HFD-induced hypermethylation. −260 nt methylation levels were associated with NT-Pgc-1α expression only. Pgc-1α isoform expression may be epigenetically regulated by Q and ROE through DNA methylation.","PeriodicalId":20439,"journal":{"name":"PPAR Research","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2017-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2017/3235693","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48293405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
MicroRNAs-Dependent Regulation of PPARs in Metabolic Diseases and Cancers 代谢疾病和癌症中PPARs的microrna依赖性调控
IF 2.9 3区 医学
PPAR Research Pub Date : 2017-01-12 DOI: 10.1155/2017/7058424
Dorothea Portius, Cyril Sobolewski, Michelangelo Foti
{"title":"MicroRNAs-Dependent Regulation of PPARs in Metabolic Diseases and Cancers","authors":"Dorothea Portius, Cyril Sobolewski, Michelangelo Foti","doi":"10.1155/2017/7058424","DOIUrl":"https://doi.org/10.1155/2017/7058424","url":null,"abstract":"Peroxisome proliferator-activated receptors (PPARs) are a family of ligand-dependent nuclear receptors, which control the transcription of genes involved in energy homeostasis and inflammation and cell proliferation/differentiation. Alterations of PPARs' expression and/or activity are commonly associated with metabolic disorders occurring with obesity, type 2 diabetes, and fatty liver disease, as well as with inflammation and cancer. Emerging evidence now indicates that microRNAs (miRNAs), a family of small noncoding RNAs, which fine-tune gene expression, play a significant role in the pathophysiological mechanisms regulating the expression and activity of PPARs. Herein, the regulation of PPARs by miRNAs is reviewed in the context of metabolic disorders, inflammation, and cancer. The reciprocal control of miRNAs expression by PPARs, as well as the therapeutic potential of modulating PPAR expression/activity by pharmacological compounds targeting miRNA, is also discussed.","PeriodicalId":20439,"journal":{"name":"PPAR Research","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2017-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2017/7058424","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46389599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 56
Bezafibrate Attenuates Pressure Overload-Induced Cardiac Hypertrophy and Fibrosis 贝扎菲特减轻压力超载引起的心脏肥大和纤维化
IF 2.9 3区 医学
PPAR Research Pub Date : 2017-01-03 DOI: 10.1155/2017/5789714
Si-Chi Xu, Zhen-Guo Ma, Wen-ying Wei, Yu-Pei Yuan, Q. Tang
{"title":"Bezafibrate Attenuates Pressure Overload-Induced Cardiac Hypertrophy and Fibrosis","authors":"Si-Chi Xu, Zhen-Guo Ma, Wen-ying Wei, Yu-Pei Yuan, Q. Tang","doi":"10.1155/2017/5789714","DOIUrl":"https://doi.org/10.1155/2017/5789714","url":null,"abstract":"Background. Peroxisome proliferator-activated receptor-α (PPAR-α) is closely associated with the development of cardiac hypertrophy. Previous studies have indicated that bezafibrate (BZA), a PPAR-α agonist, could attenuate insulin resistance and obesity. This study was designed to determine whether BZA could protect against pressure overload-induced cardiac hypertrophy. Methods. Mice were orally given BZA (100 mg/kg) for 7 weeks beginning 1 week after aortic banding (AB) surgery. Cardiac hypertrophy was assessed based on echocardiographic, histological, and molecular aspects. Moreover, neonatal rat ventricular cardiomyocytes (NRVMs) were used to investigate the effects of BZA on the cardiomyocyte hypertrophic response in vitro. Results. Our study demonstrated that BZA could alleviate cardiac hypertrophy and fibrosis in mice subjected to AB surgery. BZA treatment also reduced the phosphorylation of protein kinase B (AKT)/glycogen synthase kinase-3β (GSK3β) and mitogen-activated protein kinases (MAPKs). BZA suppressed phenylephrine- (PE-) induced hypertrophy of cardiomyocyte in vitro. The protective effects of BZA were abolished by the treatment of the PPAR-α antagonist in vitro. Conclusions. BZA could attenuate pressure overload-induced cardiac hypertrophy and fibrosis.","PeriodicalId":20439,"journal":{"name":"PPAR Research","volume":"2017 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2017-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2017/5789714","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64688948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 19
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