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https://www.readbyqxmd.com/read/28927250/gut-microbiota-and-the-liver
#1
Alessandro Federico, Marcello Dallio, Giuseppe G Caprio, Vittorio M Ormando, Carmela Loguercio
Nowadays liver diseases represent one of major healthy problems in the world in terms of morbidity and mortality. The high prevalence of liver pathologies represents the key point to understand the necessity to identify the pathogenetic mechanisms that support these disorders in order to nurse them. Alterations of intestinal microbiota seem to play an important role in induction and promotion of liver damage progression, in addition to direct injury resulting from different causal agents. Gut microbiota is considered both as a promoting factor and as a potential therapeutic target of a large number of liver pathologies due to the connection between intestine and liver: the gut-liver axis...
December 2017: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/28925934/can-diet-help-non-obese-individuals-with-non-alcoholic-fatty-liver-disease-nafld
#2
Hamid A Merchant
Subjects diagnosed with non-alcoholic fatty liver disease (NAFLD) or hepatic steatosis are usually obese or overweight. NAFLD has also been reported in many non-obese healthy subjects as an incidental finding during imaging. Subjects with early-stage NAFLD who are otherwise healthy are often left unmanaged in current clinical practice; it is not clear if an early intervention in those individuals would be of any benefit in preventing NAFLD progression to more serious conditions. Since many of these subjects are non-alcoholic and have a normal body mass index (BMI), an intensive lifestyle change program is not usually recommended...
September 19, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28924552/schisandra-sphenanthera-extract-wuzhi-tablet-protects-against-chronic-binge-and-acute-alcohol-induced-liver-injury-by-regulating-the-nrf2-are-pathway-in-mice
#3
Xuezhen Zeng, Xi Li, Chenshu Xu, Fulin Jiang, Yufei Mo, Xiaomei Fan, Yaoting Li, Yiming Jiang, Dongshun Li, Min Huang, Huichang Bi
Alcohol abuse leads to alcoholic liver disease and no effective therapy is currently available. Wuzhi Tablet (WZ), a preparation of extract from Schisandra sphenanthera that is a traditional hepato-protective herb, exerted a significant protective effect against acetaminophen-induced liver injury in our recent studies, but whether WZ can alleviate alcohol-induced toxicity remains unclear. This study aimed to investigate the contribution of WZ to alcohol-induced liver injury by using chronic-binge and acute models of alcohol feeding...
September 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/28924123/the-improvement-of-the-hepatic-histological-findings-in-a-patient-with-non-alcoholic-steatohepatitis-with-type-2-diabetes-after-the-administration-of-the-sodium-glucose-cotransporter-2-inhibitor-ipragliflozin
#4
Akihiko Takeda, Aya Irahara, Atsuko Nakano, Emi Takata, Yuko Koketsu, Kunie Kimata, Eri Senda, Hajime Yamada, Kazuhito Ichikawa, Takahiro Fujimori, Yoshio Sumida
The patient was a 67-year-old woman with type 2 diabetes and non-alcoholic steatohepatitis (NASH). The administration of the sodium-glucose cotransporter 2 (SGLT2) inhibitor, ipragliflozin improved her liver dysfunction clinically and histologically. The serum alanine aminotransferase (ALT) and ferritin levels decreased to normal limits after treatment for four months. Type IV collagen and hyaluronic acid, both of which were serum fibrotic markers, decreased after treatment. Ultrasonography and computed tomography showed a decrease in the fat deposits in her liver...
September 15, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28923496/deficiency-of-the-mitochondrial-nad-kinase-causes-stress-induced-hepatic-steatosis-in-mice
#5
Kezhong Zhang, Hyunbae Kim, Zhiyao Fu, Yining Qiu, Zhao Yang, Jiemei Wang, Deqiang Zhang, Xin Tong, Lei Yin, Jing Li, Jianmei Wu, Nathan R Qi, Sander M Houten, Ren Zhang
BACKGROUND & AIMS: The mitochondrial nicotinamide adenine dinucleotide (NAD) kinase (NADK2, also called MNADK) catalyzes phosphorylation of NAD to yield NADP. Little is known about the functions of mitochondrial NADP and MNADK in liver physiology and pathology. We investigated the effects of reduced mitochondrial NADP by deleting MNADK in mice. METHODS: We generated MNADK-knockout (KO) mice on a C57BL/6NTac background; mice with a wild-type Mnadk gene were used as controls...
September 15, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28923247/effects-of-plant-and-animal-based-high-fat-diets-on-lipid-storage-and-distribution-in-environmental-bacteria-colonized-gnotobiotic-mice
#6
Yi-Hsun Chen, Chien-Chao Chiu, Shao-Wen Hung, Ju-Yun Liu, Yu-Chih Wang, Qiang Lv, Cheng-Chih Hsu, Yi-Wen Huang, Wen-Ching Huang, Hsiao-Li Chuang, Ter-Hsin Chen
Different edible oils such as lard and soybean oil have been reported to interact with the gut microbiota, affecting host lipid metabolism. However, whether bacteria derived from the environment influence host lipid metabolism remains unclear. This study aimed to clarify the roles of environmental bacteria in host lipid storage and distribution with various edible oils. Gnotobiotic C57BL/6JNarl mice were inoculated with Lysinibacillus xylanilyticus and Paenibacillus azoreducens and then fed either a normal diet (LabDiet 5010, control group) or a diet containing 60% lard (L-group) or soybean oil (S-group) for 18 months...
September 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28923202/dietary-linoleic-acid-and-its-oxidized-metabolites-exacerbate-liver-injury-caused-by-ethanol-via-induction-of-hepatic-proinflammatory-response-in-mice
#7
Dennis R Warner, Huilin Liu, Matthew E Miller, Christopher E Ramsden, Bin Gao, Ariel E Feldstein, Susanne Schuster, Craig J McClain, Irina A Kirpich
Alcoholic liver disease is a major human health problem leading to significant morbidity and mortality in the United States and worldwide. Dietary fat plays an important role in alcoholic liver disease pathogenesis. Herein, we tested the hypothesis that a combination of ethanol and a diet rich in linoleic acid (LA) leads to the increased production of oxidized LA metabolites (OXLAMs), specifically 9- and 13-hydroxyoctadecadienoic acids (HODEs), which contribute to a hepatic proinflammatory response exacerbating liver injury...
October 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28922680/pivotal-role-of-tnf-%C3%AE-in-the-development-and-progression-of-nonalcoholic-fatty-liver-disease-in-a-murine-model
#8
Satomi Kakino, Tsuyoshi Ohki, Hitomi Nakayama, Xiahong Yuan, Shuichi Otabe, Toshihiko Hashinaga, Nobuhiko Wada, Yayoi Kurita, Kayo Tanaka, Kento Hara, Eri Soejima, Yuji Tajiri, Kentaro Yamada
Previously, we have shown that the adipocyte-specific nuclear form of sterol regulatory element-binding protein-1c (nSREBP-1c) transgenic mice spontaneously developed hepatic lesions that are similar to those of human nonalcoholic steatohepatitis (NASH) with a concomitant elevation of plasma TNF-α. In this study, we analyzed the role of TNF-α in the progression of nonalcoholic fatty liver disease (NAFLD). We established a Tnf knockout nSREBP-1c transgenic mouse line. Glucose tolerance and liver histology were examined at the age of 20 weeks...
September 18, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28922188/new-insights-into-the-role-of-glycosylation-in-lipoprotein-metabolism
#9
Marjolein A W van den Boogert, Daniel J Rader, Adriaan G Holleboom
PURPOSE OF REVIEW: Human genetics has provided new insights into the role of protein glycosylation in regulating lipoprotein metabolism. Here we review these new developments and discuss the biological insights they provide. RECENT FINDINGS: Case descriptions of patients with congenital defects in N-glycosylation (CDG-I) frequently describe a distinct hypocholesterolemia in these rare multisystem clinical syndromes. Two novel CDGs with disturbed Golgi homeostasis and trafficking defects result in mixed glycosylation disorders, hepatic steatosis and hypercholesterolemia...
September 15, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28921708/scopoletin-supplementation-ameliorates-steatosis-and-inflammation-in-diabetic-mice
#10
Ra-Yeong Choi, Ju Ri Ham, Hae-In Lee, Hyun Wook Cho, Myung-Sook Choi, Seok-Kyu Park, Jin Lee, Myung-Joo Kim, Kwon-Il Seo, Mi-Kyung Lee
Scopoletin is a bioactive component in many edible plants and fruits. This study investigated the effects of scopoletin on hepatic steatosis and inflammation in a high-fat diet fed type 1 diabetic mice by comparison with metformin. Scopoletin (0.01%, w/w) or metformin (0.5%, w/w) was provided with a high-fat diet to streptozotocin-induced diabetic mice for 11 weeks. Both scopoletin and metformin lowered blood glucose and HbA1c , serum ALT, TNF-α and IL-6 levels, glucose intolerance, and hepatic lipid accumulation compared with the diabetic control group...
September 18, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28920922/g%C3%AE-13-ablation-reprograms-myofibers-to-oxidative-phenotype-and-enhances-whole-body-metabolism
#11
Ja Hyun Koo, Tae Hyun Kim, Shi-Young Park, Min Sung Joo, Chang Yeob Han, Cheol Soo Choi, Sang Geon Kim
Skeletal muscle is a key organ in energy homeostasis owing to its high requirement for nutrients. Heterotrimeric G proteins converge signals from cell-surface receptors to potentiate or blunt responses against environmental changes. Here, we show that muscle-specific ablation of Gα13 in mice promotes reprogramming of myofibers to the oxidative type, with resultant increases in mitochondrial biogenesis and cellular respiration. Mechanistically, Gα13 and its downstream effector RhoA suppressed nuclear factor of activated T cells 1 (NFATc1), a chief regulator of myofiber conversion, by increasing Rho-associated kinase 2-mediated (Rock2-mediated) phosphorylation at Ser243...
September 18, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28919979/reversal-of-fibrosis-in-patients-with-nonalcoholic-steatohepatosis-after-gastric-bypass-surgery
#12
Brian M Parker, Jiang Wu, Jing You, David S Barnes, Lisa Yerian, John P Kirwan, Philip R Schauer, Daniel I Sessler
BACKGROUND: Roux-en-Y gastric bypass (RYGB) improves the pathophysiology that contributes to obesity-related nonalcoholic steatohepatitis (NASH). Whether obesity-related fibrosis improves is unclear. We hypothesized that RYGB reverses NASH and fibrosis, and indocyanine green (ICG) clearance provides a sensitive measure for detecting asymptomatic fatty liver disease. METHODS: One hundred six obese adults scheduled for RYGB had preoperative liver function assessed using standard tests and ICG clearance and core liver biopsies obtained during RYGB...
2017: BMC Obesity
https://www.readbyqxmd.com/read/28918936/intermittent-fasting-promotes-white-adipose-browning-and-decreases-obesity-by-shaping-the-gut%C3%A2-microbiota
#13
Guolin Li, Cen Xie, Siyu Lu, Robert G Nichols, Yuan Tian, Licen Li, Daxeshkumar Patel, Yinyan Ma, Chad N Brocker, Tingting Yan, Kristopher W Krausz, Rong Xiang, Oksana Gavrilova, Andrew D Patterson, Frank J Gonzalez
While activation of beige thermogenesis is a promising approach for treatment of obesity-associated diseases, there are currently no known pharmacological means of inducing beiging in humans. Intermittent fasting is an effective and natural strategy for weight control, but the mechanism for its efficacy is poorly understood. Here, we show that an every-other-day fasting (EODF) regimen selectively stimulates beige fat development within white adipose tissue and dramatically ameliorates obesity, insulin resistance, and hepatic steatosis...
September 13, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28915103/mr-spectroscopy-derived-proton-density-fat-fraction-is-superior-to-controlled-attenuation-parameter-for-detecting-and-grading-hepatic-steatosis
#14
Jurgen Henk Runge, Loek Pieter Smits, Joanne Verheij, Annekatrien Depla, Sjoerd Douwe Kuiken, Bert Cornelis Baak, Aart Johannes Nederveen, Ulrich Beuers, Jaap Stoker
Purpose To prospectively compare the diagnostic accuracy of controlled attenuation parameter (CAP) obtained with transient elastography and proton density fat fraction (PDFF) obtained with proton magnetic resonance (MR) spectroscopy with results of liver biopsy in a cohort of adult patients suspected of having nonalcoholic fatty liver disease (NAFLD). Materials and Methods The institutional review board approved this study. Informed consent was obtained from all patients. The authors evaluated 55 patients suspected of having NAFLD (40 men, 15 women)...
September 15, 2017: Radiology
https://www.readbyqxmd.com/read/28914407/association-of-fetuin-b-with-markers-of-liver-fibrosis-in-nonalcoholic-fatty-liver-disease
#15
Thomas Ebert, Nicolas Linder, Alexander Schaudinn, Harald Busse, Joachim Berger, Ralf Lichtinghagen, Volker Keim, Johannes Wiegand, Thomas Karlas
OBJECTIVE: The liver-derived plasma protein fetuin B is associated with nonalcoholic fatty liver disease (NAFLD) and impaired glucose homeostasis in mice. However, its association with non-invasive ultrasound- and magnetic resonance (MR)-based markers of liver fibrosis and steatosis, the enhanced liver fibrosis (ELF) score, liver biopsy, as well as rs738409 in PNPLA3, has not been elucidated in NAFLD, so far. DESIGN AND METHODS: The association of circulating fetuin B and transient elastography (TE), controlled attenuation parameter (CAP), (1)H-MR-spectroscopy, the ELF score, liver biopsy, as well as risk alleles in rs738409 in PNPLA3, was studied in 101 NAFLD patients as compared to 15 healthy controls...
September 15, 2017: Endocrine
https://www.readbyqxmd.com/read/28911249/transcriptome-analysis-reveals-the-molecular-mechanism-of-hepatic-fat-metabolism-disorder-caused-by-muscovy-duck-reovirus-infection
#16
Quanxi Wang, Mengxi Liu, Lihui Xu, Yijian Wu, Yifan Huang
The aim of this work was to clarify the molecular mechanism underlying the fatty degeneration of livers infected with Muscovy duck reovirus (MDRV), which produces obvious white necrotic foci in the liver. Transcriptome data for MDRV-infected Muscovy duck livers and control livers were sequenced, assembled, and annotated with Illumina® HiSeq 2000. The differentially expressed genes were screened and their functions analysed. We also determined and confirmed the molecular mechanism of the hepatic fat metabolism disorder caused by MDRV infection...
September 15, 2017: Avian Pathology: Journal of the W.V.P.A
https://www.readbyqxmd.com/read/28906444/short-term-intake-of-a-fructose-fat-and-cholesterol-rich-diet-causes-hepatic-steatosis-in-mice-effect-of-antibiotic-treatment
#17
Annette Brandt, Cheng Jun Jin, Katja Nolte, Cathrin Sellmann, Anna Janina Engstler, Ina Bergheim
Intestinal microbiota and barrier functions seem to play an important role in the development of non-alcoholic fatty liver disease (NAFLD). However, whether these changes are an early event in the development of NAFLD or are primarily associated with later stages of the disease, has not yet been clarified. Using a pair-feeding model, we determined the effects of a short-term intake of a fat-, fructose- and cholesterol-rich diet (FFC) on the development of early hepatic steatosis and markers of intestinal barrier function in mice treated with and without non-resorbable antibiotics (AB)...
September 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28906010/serial-changes-in-liver-stiffness-and-controlled-attenuation-parameter-following-direct-acting-antiviral-therapy-against-hepatitis-c-virus-genotype-1b
#18
Nobuhiko Ogasawara, Masahiro Kobayashi, Norio Akuta, Yoko Kominami, Shunichiro Fujiyama, Yusuke Kawamura, Hitomi Sezaki, Tetsuya Hosaka, Fumitaka Suzuki, Satoshi Saitoh, Yoshiyuki Suzuki, Yasuji Arase, Kenji Ikeda, Mariko Kobayashi, Hiromitsu Kumada
Little information is available on the impact of direct-acting antiviral (DAA) therapy on changes in liver fibrosis and steatosis. Liver stiffness (LS) and controlled attenuation parameter (CAP) values were evaluated using transient elastography. The study subjects were 214 elderly patients infected with HCV genotype 1b who received 24-week daclatasvir and asunaprevir dual therapy. All patients of this retrospective study had no hepatocellular carcinoma before and during DAA therapy. LS and CAP were assessed before treatment (baseline), at end of treatment (EOT), and at 24, 48, 72 weeks (W) after EOT...
September 14, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28905319/pi3k-inhibition-protects-mice-from-nafld-by-down-regulating-cmklr1-and-nlrp3-in-kupffer-cells
#19
Wenfeng Zhang, Yan Liu, Mingbing Wu, Xiwen Zhu, Tao Wang, Kun He, Peizhi Li, Xiaoling Wu
Inflammation induced by high-fat diet (HFD) is of critical importance in the development of hepatic steatosis. The role of chemerin in the progress of nonalcoholic fatty liver disease (NAFLD) remains controversial. Here, we have evaluated the effects and mechanism of chemerin on insulin sensitivity and inflammation. An inhibitor (wortmannin) and agonist (insulin-like growth factor 1 (IGF-1) of phosphatidyl inositol 3-kinase (PI3K) were applied to Kupffer cells (KCs) after treatment with a concentration gradient of chemerin in vitro...
September 13, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28904866/imm-h007-a-new-therapeutic-candidate-for-nonalcoholic-fatty-liver-disease-improves-hepatic-steatosis-in-hamsters-fed-a-high-fat-diet
#20
Huijie Shi, Qingchun Wang, Liu Yang, Shouxia Xie, Haibo Zhu
Nonalcoholic fatty liver disease (NAFLD), the most common chronic liver disease in humans, is characterized by the accumulation of triacylglycerols (TGs) in hepatocytes. We tested whether 2',3',5'-tri-acetyl-N6-(3-hydroxylaniline) adenosine (IMM-H007) can eliminate hepatic steatosis in hamsters fed a high-fat diet (HFD), as a model of NAFLD. Compared with HFD-only controls, IMM-H007 treatment significantly lowered serum levels of TG, total cholesterol, and free fatty acids (FFAs) in hamsters fed the HFD, with a prominent decrease in levels of serum transaminases and fasting insulin, without affecting fasting glucose levels...
September 2017: FEBS Open Bio
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