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https://www.readbyqxmd.com/read/28088409/genome-wide-association-analysis-and-pathways-enrichment-for-lactation-persistency-in-canadian-holstein-cattle
#1
D N Do, N Bissonnette, P Lacasse, F Miglior, M Sargolzaei, X Zhao, E M Ibeagha-Awemu
Lactation persistency (LP), defined as the rate of declining milk yield after milk peak, is an economically important trait for dairy cattle. Improving LP is considered a good alternative method for increasing overall milk production because it does not cause the negative energy balance and other health issues that cows experience during peak milk production. However, little is known about the biology of LP. A genome-wide association study (GWAS) and pathway enrichment were used to explore the genetic mechanisms underlying LP...
January 11, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28088385/flavonoid-derivative-fla-cn-inhibited-adipocyte-differentiation-via-activating-ampk-and-up-regulating-microrna-27-in-3t3-l1-cells
#2
Chun-Chun Gan, Tian-Wen Ni, Yang Yu, Nan Qin, Ying Chen, Mei-Na Jin, Hong-Quan Duan
Fla-CN (3-O-[(E)-4-(4-cyanophenyl)-2-oxobut-3-en-1-yl] kaempferol) is a semi-synthesized flavonoid derivative of tiliroside which exhibited anti-diabetic effect in vivo. Our previous study revealed the role of Fla-CN in anti-obesity and anti-diabetes in vivo, but the underlying mechanism remained to be addressed. The present study aimed to investigate the mechanism of anti-adipogenesis in vitro. Fla-CN markedly inhibited intracellular lipid accumulation in a dose-dependent manner, and the inhibitory effect was mainly limited to the early stage of adipocyte differentiation in vitro...
January 11, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28088358/the-peroxisome-proliferator-activated-receptor-alpha-agonist-fenofibrate-attenuates-alcohol-self-administration-in-rats
#3
Colin N Haile, Therese A Kosten
Fibrates are a class of medications used to treat hypercholesterolemia and dyslipidemia that target nuclear peroxisome proliferator-activated receptors (PPARs). Studies have shown the PPARα agonist fenofibrate decreases voluntary EtOH consumption however its impact on the reinforcing and motivational effects of EtOH is unknown. We evaluated the ability of fenofibrate (25, 50 and 100 mg/kg), to alter EtOH (10%, w/v) and sucrose (2%, w/v) operant self-administration in rats under a FR2 schedule of reinforcement over four days and under a progressive ratio (PR) schedule on day five of treatment...
January 11, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28088260/korean-chungtaejeon-tea-extract-attenuates-body-weight-gain-in-c57bl-6j-lep-ob-ob-mice-and-regulates-adipogenesis-and-lipolysis-in-3t3-l1-adipocytes
#4
Bhesh Raj Sharma, Dong Wook Kim, Dong Young Rhyu
OBJECTIVE: Traditional Korean Chungtaejeon (CTJ) tea is a type of fermented tea, which has received increasing attention in recent years because of its purported health benefits. The present study was designed to investigate the effect and mechanism of CTJ tea extract on body weight gain using C57BL/6J-Lep ob/ob mice and 3T3-L1 adipocytes, respectively. METHODS: The effects of CTJ on cell viability, lipid accumulation, and expression of protein and mRNA were measured in 3T3-L1 adipocytes by using 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide, oil red O staining, Western blotting, and reverse transcriptase-polymerase chain reaction analyses...
January 2017: Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28087694/iso-%C3%AE-acids-bitter-components-of-beer-prevent-inflammation-and-cognitive-decline-induced-in-a-mouse-model-of-alzheimer-s-disease
#5
Yasuhisa Ano, Atsushi Dhata, Yoshimasa Taniguchi, Ayaka Hoshi, Kazuyuki Uchida, Akihiko Takashima, Hiroyuki Nakayama
Alongside the rapid growth in aging populations worldwide, prevention and therapy for age-related memory decline and dementia are in great demand to maintain a long healthy life. Here we found that iso-α-acids, hop-derived bitter compounds in beer, enhance microglial phagocytosis and suppress inflammation via activation of the peroxisome proliferator-activated receptor (PPAR-γ). In normal mice, oral administration of iso-α-acids led to a significant increase both in CD11b and CD206 double-positive anti-inflammatory type microglia (P<0...
January 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28081360/pinus-densiflora-bark-extract-pinexol-decreased-adiposity-in-mice-by-down-regulation-of-hepatic-de-novo-lipogenesis-and-adipogenesis-in-white-adipose-tissue
#6
Hyemyoung Ahn, Gwang-Woong Go
PineXol, extracted from Korean red pine bark, has beneficial effects, such as antioxidant, anti3 inflammatory, and anti-lipogenic activities in vitro. We tested the hypothesis that PineXol supplementation could have anti-obesity effects on mice fed a high-fat diet (HFD). Four-week old male C57BL/6 mice were fed normal chow (18% kcal from fat) or HFD (60% kcal from fat). HFD-fed animals were also subjected to PineXol treatment at a dose of 10 or 50 mg/kg body weight (BW) (PX10 or PX50, respectively) body weight...
January 12, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28081181/aronia-melanocarpa-extract-ameliorates-hepatic-lipid-metabolism-through-ppar%C3%AE-2-downregulation
#7
Chung-Hwa Park, Jung-Hee Kim, Eun Byul Lee, Wonhee Hur, Oh-Joo Kwon, Hyoung-Jin Park, Seung Kew Yoon
Nonalcoholic fatty liver disease (NAFLD) is a hepatic manifestation of metabolic syndrome. Studies have demonstrated that anthocyanin-rich foods may improve hyperlipidemia and ameliorate hepatic steatosis. Here, effects of Aronia melanocarpa (AM), known to be rich of anthocyanins, on hepatic lipid metabolism and adipogenic genes were determined. AM was treated to C57BL/6N mice fed with high fat diet (HFD) or to FL83B cells treated with free fatty acid (FFA). Changes in levels of lipids, enzymes and hormones were observed, and expressions of adipogenic genes involved in hepatic lipid metabolism were detected by PCR, Western blotting and luciferase assay...
2017: PloS One
https://www.readbyqxmd.com/read/28079268/renoprotective-effect-of-hypericum-perforatum-against-diabetic-nephropathy-in-rats-insights-in-the-underlying-mechanisms
#8
Dalia M Abd El Motteleb, Dalia I Abd El Aleem
Oxidative stress and inflammation play a key role in the initiation and progression of diabetic nephropathy (DN). The present study aimed to investigate the possible protective effect of hypericum perforatum (HP) against DN. Rats were allocated into six groups; control: received normal saline, diabetic untreated (DM): received single dose of streptozotocin (STZ) after injection of nicotinamide (NA), gliclazide: received STZ,NA+ gliclazide (10mg/kg), DM+HP50, DM+HP100, DM+HP200:received STZ,NA and HP 50, 100, 200 mg/kg respectively...
January 12, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28078253/effects-of-eicosapentaenoic-acid-and-docosahexaenoic-acid-on-mitochondrial-dna-replication-and-pgc-1%C3%AE-gene-expression-in-c2c12-muscle-cells
#9
Mak-Soon Lee, Yoonjin Shin, Sohee Moon, Seunghae Kim, Yangha Kim
Mitochondrial biogenesis is a complex process requiring coordinated expression of nuclear and mitochondrial genomes. The peroxisome proliferator-activated receptor gamma co-activator 1-alpha (PGC-1α) is a key regulator of mitochondrial biogenesis, and it controls mitochondrial DNA (mtDNA) replication within diverse tissues, including muscle tissue. The aim of this study was to investigate the effects of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) on mtDNA copy number and PGC-1α promoter activity in C2C12 muscle cells...
December 2016: Preventive Nutrition and Food Science
https://www.readbyqxmd.com/read/28077576/specific-inhibition-of-acyl-coa-oxidase-1-by-an-acetylenic-acid-improves-hepatic-lipid-and-reactive-oxygen-species-ros-metabolism-in-rats-fed-a-high-fat-diet
#10
Jia Zeng, Senwen Deng, Yiping Wang, Ping Li, Lian Tang, Yefeng Pang
Chronic high-fat diet (HFD) results in hepatic mitochondrial dysfunction and induction of peroxisomal fatty acid oxidation (FAO), whether specific inhibition of peroxisomal FAO benefits mitochondrial FAO and reactive oxygen species (ROS) metabolism remains unclear. In this study, a specific inhibitor for the rate-limiting enzyme involved in peroxisomal FAO, acyl-CoA oxidase-1 (ACOX1) was developed and used for the investigation of peroxisomal FAO inhibition upon mitochondrial FAO and ROS metabolism. Specific inhibition of ACOX1 by 10,12 -tricosadiynoic acid increased hepatic mitochondrial FAO via activation of the SIRT1-AMPK pathway and PPARα and reduced hydrogen peroxide accumulation in high-fat diet fed rats, which significantly decreased hepatic lipid and ROS contents, reduced body weight gain and decreased serum triglyceride and insulin levels...
January 11, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28077274/the-role-and-regulation-of-the-peroxisome-proliferator-activated-receptor-alpha-in-human-liver
#11
REVIEW
Sander Kersten, Rinke Stienstra
The peroxisome proliferator-activated receptor α (PPARα) is a ligand-activated transcription factor that is abundantly expressed in liver. PPARα is activated by fatty acids and various other lipid species, as well as by a class of chemicals referred to as peroxisome proliferators. Studies in mice have shown that PPARα serves as the master regulator of hepatic lipid metabolism during fasting. In addition, PPARα suppresses inflammation and the acute phase response. Comparatively little is known about PPARα in human liver...
January 7, 2017: Biochimie
https://www.readbyqxmd.com/read/28076827/new-diphenylmethane-derivatives-as-peroxisome-proliferator-activated-receptor-alpha-gamma-dual-agonists-endowed-with-anti-proliferative-effects-and-mitochondrial-activity
#12
Luca Piemontese, Carmen Cerchia, Antonio Laghezza, Pamela Ziccardi, Sabina Sblano, Paolo Tortorella, Vito Iacobazzi, Vittoria Infantino, Paolo Convertini, Fabrizio Dal Piaz, Angelo Lupo, Vittorio Colantuoni, Antonio Lavecchia, Fulvio Loiodice
We screened a short series of new chiral diphenylmethane derivatives and identified potent dual PPARα/γ partial agonists. As both enantiomers of the most active compound 1 displayed an unexpected similar transactivation activity, we performed docking experiments to provide a molecular understanding of their similar partial agonism. We also evaluated the ability of both enantiomers of 1 and racemic 2 to inhibit colorectal cancer cells proliferation: (S)-1 displayed a more robust activity due, at least in part, to a partial inhibition of the Wnt/β-catenin signalling pathway that is upregulated in the majority of colorectal cancers...
December 24, 2016: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28074358/genotype-3-infection-the-last-stand-of-hepatitis-c-virus
#13
Austin Chan, Keyur Patel, Susanna Naggie
Hepatitis C virus (HCV) represents a significant global disease burden, with an estimated 130-150 million people worldwide living with chronic HCV infection. Within the six major clinical HCV genotypes, genotype 3 represents 22-30% of all infection and is described as a unique entity with higher rates of steatosis, faster progression to cirrhosis, and higher rates of hepatocellular carcinoma. Hepatic steatosis in the setting of hepatitis C genotype 3 (HCV-3) is driven by viral influence on three major pathways: microsomal triglyceride transfer protein, sterol regulatory element-binding protein-1c, and peroxisome proliferator-associated receptor-α...
January 10, 2017: Drugs
https://www.readbyqxmd.com/read/28073778/overexpression-of-pgc-1%C3%AE-increases-peroxisomal-and-mitochondrial-fatty-acid-oxidation-in-human-primary-myotubes
#14
Tai-Yu Huang, Donghai Zheng, Joseph A Houmard, Jeffrey J Brault, Robert C Hickner, Ronald N Cortright
Peroxisomes are indispensable organelles for lipid metabolism in humans and their biogenesis has been assumed to be under regulation by peroxisome proliferator-activated receptors (PPARs). However, recent studies in hepatocytes suggest that the mitochondrial proliferator PGC-1α (peroxisome proliferator-activated receptor gamma coactivator-1 alpha) also acts as an upstream transcriptional regulator for enhancing peroxisomal abundance and associated activity. It is unknown whether the regulatory mechanism(s) for enhancing peroxisomal function is through the same node as mitochondrial biogenesis in human skeletal muscle (HSkM) and whether fatty acid oxidation (FAO) is affected...
January 10, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28073413/-cellular-and-molecular-mechanisms-of-anti-inflammatory-effect-of-peroxisome-proliferator-activated-receptor-%C3%AE
#15
M J Jiao, L Zhou, F Ren, Y D Wang, C Shen, Z P Duan, C Y Zhao
Objective: To investigate the cellular and molecular mechanisms of the anti-inflammatory effect of peroxisome proliferator-activated receptor α (PPARα). Methods: Firstly, bone marrow-derived macrophages (BMDMs) were randomly divided into control group, LPS group, WY14643 10 μmol/L group, WY14643 25 μmol/L group, and WY14643 50 μmol/L group using a random number table. Secondly, BMDMs were randomly divided into LPS group, WY14643+LPS group, and 3-MA+WY14643+LPS group. Primary BMDMs were stimulated by LPS (20 ng/ml) to establish the cellular model of inflammation...
December 20, 2016: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28072703/screening-the-key-micrornas-and-transcription-factors-in-prostate-cancer-based-on-microrna-functional-synergistic-relationships
#16
Fan Feng, Jitao Wu, Zhenli Gao, Shengqiang Yu, Yuanshan Cui
Prostate cancer (PC) is a common neoplasm, and metastatic PC remains incurable. The study aims to screen key microRNAs (miRNAs) and transcription factors (TFs) involved in PC.The miRNA expression profile dataset (GSE45604) was downloaded from Gene Expression Omnibus database, including 50 PC and 10 normal specimens. Differentially expressed miRNAs (DEmiRNAs) were identified through limma package in R, and DEmiRNA-DEmiRNA co-regulation network was constructed based on the number of co-regulated target genes...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28070015/inhaled-resveratrol-treatments-slow-ageing-related-degenerative-changes-in-mouse-lung
#17
Barbara Driscoll, Sonia Navarro, Raghava Reddy, Jooeun Lee, David Warburton
BACKGROUND: Lung ageing, a significant risk factor for chronic human lung diseases such as COPD and emphysema, is characterised by airspace enlargement and decreasing lung function. Likewise, in prematurely ageing telomerase null (terc-/-) mice, p53 stabilisation within diminishing numbers of alveolar epithelial type 2 cells (AEC2) accompanies reduced lung function. Resveratrol (RSL) is a plant phytoalexin that has previously showed efficacy in enhancing invertebrate longevity and supporting mammalian muscle metabolism when delivered orally...
January 9, 2017: Thorax
https://www.readbyqxmd.com/read/28069597/chronic-binge-alcohol-induced-dysregulation-of-mitochondrial-related-genes-in-skeletal-muscle-of-simian-immunodeficiency-virus-infected-rhesus-macaques-at-end-stage-disease
#18
Anthony A Duplanty, Liz Simon, Patricia E Molina
AIMS: Alcohol use disorders are more prevalent in HIV patients than the general population. Both chronic alcohol consumption and HIV infection have been linked to mitochondrial dysregulation; and this is considered an important mechanism in the pathogenesis of muscle myopathy. This study investigated if chronic binge alcohol (CBA) administration impairs the expression of genes involved in mitochondrial homeostasis in SIV-infected macaques. METHODS: Male rhesus macaques were administered daily CBA (to achieve peak blood alcohol concentrations of 50-60 mM within 2 h after start of infusion) or sucrose (SUC) intragastrically 3 months prior to intravenous SIVmac251 inoculation and continued until macaques met criteria for end-stage disease...
January 8, 2017: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/28069019/ppars-modulate-cardiac-metabolism-and-mitochondrial-function-in-diabetes
#19
REVIEW
Ting-Wei Lee, Kuan-Jen Bai, Ting-I Lee, Tze-Fan Chao, Yu-Hsun Kao, Yi-Jen Chen
Diabetic cardiomyopathy is a major complication of diabetes mellitus (DM). Currently, effective treatments for diabetic cardiomyopathy are limited. The pathophysiology of diabetic cardiomyopathy is complex, whereas mitochondrial dysfunction plays a vital role in the genesis of diabetic cardiomyopathy. Metabolic regulation targeting mitochondrial dysfunction is expected to be a reasonable strategy for treating diabetic cardiomyopathy. Peroxisome proliferator-activated receptors (PPARs) are master executors in regulating glucose and lipid homeostasis and also modulate mitochondrial function...
January 10, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28067864/protective-effect-of-cactus-cladode-extracts-on-peroxisomal-functions-in-microglial-bv-2-cells-activated-by-different-lipopolysaccharides
#20
Fatima-Ezzahra Saih, Pierre Andreoletti, Stéphane Mandard, Norbert Latruffe, M'Hammed Saïd El Kebbaj, Gérard Lizard, Boubker Nasser, Mustapha Cherkaoui-Malki
In this study, we aimed to evaluate the antioxidant and anti-inflammatory properties of Opuntia ficus-indica cactus cladode extracts in microglia BV-2 cells. Inflammation associated with microglia activation in neuronal injury can be achieved by LPS exposure. Using four different structurally and biologically well-characterized LPS serotypes, we revealed a structure-related differential effect of LPS on fatty acid β-oxidation and antioxidant enzymes in peroxisomes: Escherichia coli-LPS decreased ACOX1 activity while Salmonella minnesota-LPS reduced only catalase activity...
January 7, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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