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Hepatic angiotensin

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https://www.readbyqxmd.com/read/29348256/flavonoids-dairy-foods-and-cardiovascular-and-metabolic-health-a-review-of-emerging-biologic-pathways
#1
REVIEW
Dariush Mozaffarian, Jason H Y Wu
A growing body of nutritional science highlights the complex mechanisms and pleiotropic pathways of cardiometabolic effects of different foods. Among these, some of the most exciting advances are occurring in the area of flavonoids, bioactive phytochemicals found in plant foods; and in the area of dairy, including milk, yogurt, and cheese. Many of the relevant ingredients and mechanistic pathways are now being clarified, shedding new light on both the ingredients and the pathways for how diet influences health and well-being...
January 19, 2018: Circulation Research
https://www.readbyqxmd.com/read/29340118/apelin-apj-system-a-key-therapeutic-target-for-liver-disease
#2
REVIEW
Shuang-Yu Lv, Binbin Cui, Wei-Dong Chen, Yan-Dong Wang
Apelin, a new bioactive peptide, was identified as an endogenous ligand for APJ (Angiotensin II receptor-like 1). Apelin and its receptor have an abundant distribution in central nervous system and peripheral tissues, including liver. Apelin/APJ has diverse physiological and pathological effects, including regulation of cardiovascular function, angiogenesis, fluid homeostasis and so on. Apelin/APJ system may act as a novel potential therapeutic target for liver disease. In this article, we review the role of apelin/APJ system in liver fibrosis, hepatitis, hepatic cirrhosis, liver injury and metabolic liver disease...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29335866/balancing-effect-of-biejiajian-oral-liquid-on-ace-ang-ii-at1r-axis-and-ace2-ang-1-7-mas-axis-in-rats-with-ccl4-induced-hepatic-fibrosis
#3
Xiao-Ya Li, Yan Peng, Xia-Wei Bu, Jia Yao, Li Yao
OBJECTIVE: To explore the effect of Biejiajian Oral Liquid (, BOL) on CCl4-induced hepatic fibrosis in rats by detecting the changes in the levels of angiotensin II (Ang II), angiotensin-(1-7) [Ang-(1-7)], angiotensin-converting enzyme (ACE), ACE2, angiotensin II type 1 receptor (AT1R), Mas, etc. METHODS: A total of 180 Wistar rats were randomly divided into two groups by random digital table method: prevention experiment and treatment experiment. Each group was further subdivided into the following 6 subgroups: normal control group, model group, vitamin E [100 mg/(kg•d), VE] group, enalapril [10 mg/(kg•g), Ena] group, high-dosage [20 g/(kg•d)] BOL group, and low-dosage [10 g/(kg•d)] BOL group...
January 15, 2018: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29311502/a-novel-hamster-nonalcoholic-steatohepatitis-model-induced-by-a-high-fat-and-high-cholesterol-diet
#4
Yuta Miyaoka, Denan Jin, Keitaro Tashiro, Shinsuke Masubuchi, Maiko Ozeki, Fumitoshi Hirokawa, Michihiro Hayashi, Shinji Takai, Kazuhisa Uchiyama
Nonalcoholic steatohepatitis (NASH), in which there is steatosis and fibrosis in the liver, is linked to metabolic syndrome and progresses to hepatic cirrhosis. In this study, a novel hamster NASH model derived from metabolic syndrome was made using hamsters. Hamsters were fed a normal or a high-fat and high-cholesterol (HFC) diet for 12 weeks. Body weight and the ratio of liver weight to body weight were significantly greater in HFC diet-fed hamsters than in normal diet-fed hamsters. Triglyceride, low-density lipoprotein cholesterol, and glucose levels in blood were significantly increased in HFC diet-fed hamsters, and blood pressure also tended to be high, suggesting that the HFC diet-fed hamsters developed metabolic syndrome...
January 1, 2018: Experimental Animals
https://www.readbyqxmd.com/read/29301853/-pro-renin-receptor-inhibition-reprograms-hepatic-lipid-metabolism-and-protects-mice-from-diet-induced-obesity-and-hepatosteatosis
#5
Liwei Ren, Yuan Sun, Hong Lu, Dien Ye, Lijuan Han, Na Wang, Alan Daugherty, Furong Li, Miaomiao Wang, Fengting Su, Wenjun Tao, Jie Sun, Noam Zelcer, Adam E Mullick, Ah J Danser, Yizhou Jiang, Yongcheng He, Xiongzhong Ruan, Xifeng Lu
Rationale: An elevated level of plasma low-density lipoprotein (LDL) is an established risk factor for cardiovascular disease. Recently, we reported that the (pro)renin receptor ([P]RR) regulates LDL metabolism in vitro via the LDL receptor (LDLR) and SORT1, independently of the renin-angiotensin system. Objective: To investigate the physiological role of [P]RR in lipid metabolism in vivo. Methods and Results: We used N-Acetylgalactosamine (GalNAc) modified antisense oligonucleotides (ASO) to specifically inhibit hepatic [P]RR expression in C57BL/6J mice, and studied the consequences this has on lipid metabolism...
January 4, 2018: Circulation Research
https://www.readbyqxmd.com/read/29136335/sii-ang-ii-potentiates-insulin-receptor-signalling-and-glycogen-synthesis-in-hepatocytes
#6
Samra Joke Sanni, Christina Lyngsø, Steen Gammeltoft, Jakob Lerche Hansen
The angiotensin II type I receptor (AT1R) is involved in the regulation of cardiovascular function. Excessive activation of AT1R by angiotensin II (Ang II) leads to cardiovascular disease and may be involved in the development of insulin resistance and diabetes. Functionally selective Ang II analogues, such as the [Sar1, Ile4, Ile8]-angiotensin II (SII Ang II) analogue that only activates a subset of signalling networks have been demonstrated to have beneficial effects on cardiovascular function in certain settings, including lowering blood pressure and increasing cardiac performance...
November 14, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29046730/aliskiren-effect-on-non-alcoholic-steatohepatitis-in-metabolic-syndrome
#7
F N Ramalho, S C Sanches, M C Foss, M J Augusto, D M Silva, A M Oliveira, L N Ramalho
BACKGROUND: Non-alcoholic steatohepatitis (NASH) is highly associated with metabolic syndrome, a major cause of morbidity in the globalized society. The renin-angiotensin system (RAS) influences hepatic fatty acid metabolism, inflammation and fibrosis. Thus, in the present study, we aimed to evaluate the effect of aliskiren, a direct renin inhibitor, on metabolic syndrome-related NASH. METHODS: C57BL/6 male mice (n = 45) were divided into three groups: controls; animals inoculated with streptozotocin (STZ) (40 mg/kg/day) for 5 days and fed with high fat diet (HFD) for 8 weeks; and animals inoculated with STZ for 5 days, fed with HFD for 8 weeks and treated with aliskiren (100 mg/kg/day) for the final 2 weeks...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/29029395/rasal1-is-a-potent-regulator-of-hepatic-stellate-cell-activity-and-liver-fibrosis
#8
Akemi Takata, Motoyuki Otsuka, Takahiro Kishikawa, Mari Yamagami, Rei Ishibashi, Kazuma Sekiba, Tatsunori Suzuki, Motoko Ohno, Yui Yamashita, Takaya Abe, Ryota Masuzaki, Tsuneo Ikenoue, Kazuhiko Koike
Liver fibrosis, leading to cirrhosis and liver failure, can occur after chronic liver injury. The transition of hepatic stellate cells (HSCs) from quiescent cells into proliferative and fibrogenic cells is a central event in liver fibrosis. Here, we show that RAS protein activator like-1 (RASAL1), a RAS-GTPase-activating protein, which switches off RAS activity, is significantly decreased during HSC activation, and that HSC activation can be antagonized by forced expression of the RASAL1 protein. We demonstrate that RASAL1 suppresses HSC proliferation by regulating the Ras-MAPK pathway, and that RASAL1 suppresses HSC fibrogenic activity by regulating the PKA-LKB1-AMPK-SRF pathway by interacting with angiotensin II receptor, type 1...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28953991/candesartan-rather-than-losartan-improves-motor-dysfunction-in-thioacetamide-induced-chronic-liver-failure-in-rats
#9
H A Murad, Z J Gazzaz, S S Ali, M S Ibraheem
Minimal hepatic encephalopathy is more common than the acute syndrome. Losartan, the first angiotensin-II receptor blocker (ARB), and candesartan, another widely-used ARB, have protected against developing fibrogenesis, but there is no clear data about their curative antifibrotic effects. The current study was designed to examine their effects in an already-established model of hepatic fibrosis and also their effects on the associated motor dysfunction. Low-grade chronic liver failure (CLF) was induced in 3-month old Sprague-Dawley male rats using thioacetamide (TAA, 50 mg·kg-1·day-1) intraperitoneally for 2 weeks...
September 21, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28886996/a-prodrug-design-for-improved-oral-absorption-and-reduced-hepatic-interaction
#10
Gulzar Ahmed, Walter Elger, Frederick Meece, Hareesh B Nair, Birgitt Schneider, Ralf Wyrwa, Klaus Nickisch
A series of estradiol-17-β esters of N-(p-sulfomylbenzamide)-amino acids were prepared and evaluated for systemic and hepatic estrogenic activity after oral administration in ovariectomized rats. The alkyl substitution at nitrogen of amino acids such as proline or N-methyl-alanine produced compounds that exhibit potent oral activity. The proline analog (EC508) was further evaluated along with 17β-estradiol (E2) and ethinyl-estradiol (EE) and compared their effects on the uterus, angiotensin and HDL-cholesterol after oral administration to ovariectomized female rats...
October 15, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28845018/loss-of-angiotensin-converting-enzyme-ii-ace2-accelerates-the-development-of-liver-injury-induced-by-thioacetamide
#11
Hsi-Tien Wu, Ya-Wen Chuang, Cheng-Pu Huang, Ming-Huang Chang
Angiotensin converting enzyme II (ACE2), an angiotensin converting enzyme (ACE) homologue that displays antagonist effects on ACE/angiotensin II (Ang II) axis in renin-angiotensin system (RAS), could play a protective role against liver damages. The purpose of this study is to investigate whether inflammation-mediated liver injury could be affected by ACE2 derived pathways in the RAS. Eight-weeks-old wild-type (WT; C57BL/6) and Ace2 KO (hemizygous Ace2(-/y)) male mice were used to induce liver fibrosis by thioacetamide (TAA) administration (0, 100, and 200 mg/kg BW)...
August 25, 2017: Experimental Animals
https://www.readbyqxmd.com/read/28841231/noncholestatic-acute-hepatocellular-injury-following-candesartan-administration
#12
Jan Antonio Lammel-Lindemann, Eduardo Flores-Villalba, Alexandro Jose Martagón, Eduardo DeObeso-Gonzalez, Francisco Puente-Gallegos
Arterial hypertension is a highly manageable disorder due to a variety of drugs available for its treatment. Since the late 1990s, angiotensin II receptor blockers have been widely prescribed, achieving appropriate control in patients' blood pressure. Few cases of serious adverse effects have been reported to date. Here, we present a case of acute hepatocellular injury secondary to candesartan administration. Further studies should be performed in patients who present with this adverse effect, in order to prevent more serious outcomes...
August 25, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28822808/bml-111-equilibrated-ace-angii-at1r-and-ace2-ang-1-7-mas-axis-to-protect-hepatic-fibrosis-in-rats
#13
Quandong Hu, Zhenzhen Hu, Qiongfeng Chen, Yonghong Huang, Zi Mao, Fangyun Xu, Xiaoyan Zhou
BACKGROUND: It was recently reported Lipoxins (LXs) had protective effects on fibrous diseases, and renin-angiotensin-aldosterone system (RAAS) had played vital and bidirectional roles in hepatic fibrosis. In this paper, a hepatic fibrosis model, induced by carbon tetrachloride (CCL4) in rats, was used to observe the relations between RAAS and LXs, as well as to further explore the alternative anti-fibrosis mechanisms of LXs. METHODS: The model was evaluated by morphological observations and biochemical assays...
August 16, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28811860/the-apelin-receptor-apj-in-hematopoietic-stem-cells-progenitor-cells-in-the-early-stage-of-non-alcoholic-steatohepatitis
#14
Wataru Ando, Hiroaki Yokomori, Katsuya Otori, Masaya Oda
BACKGROUND: Non-alcoholic steatohepatitis (NASH) is characterized by hepatic steatosis and inflammation with or without fibrosis. The apelin receptor (APJ) is related to angiotensin-like-receptor 1 (AGTRL1). The present study aimed to evaluate APJ as an indicator of the pathophysiology of early-stage NASH. METHODS: APJ expression was evaluated in six tissue samples with histologically proven early-stage NASH using immunohistochemistry (IHC) and immunoelectron microscopy (IEM)...
September 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28798388/angiotensin-ii-induces-connective-tissue-growth-factor-expression-in-human-hepatic-stellate-cells-by-a-transforming-growth-factor-%C3%AE-independent-mechanism
#15
Ao Li, Jingyao Zhang, Xiaoxun Zhang, Jun Wang, Songsong Wang, Xiao Xiao, Rui Wang, Peng Li, Yitao Wang
Angiotensin II (Ang II) promotes hepatic fibrosis by increasing extracellular matrix (ECM) synthesis. Connective tissue growth factor (CTGF) plays a crucial role in the pathogenesis of hepatic fibrosis and emerges as downstream of the profibrogenic cytokine transforming growth factor-β (TGF-β). We aimed to investigate the molecular events that lead from the Ang II receptor to CTGF upregulation in human hepatic stellate cells, a principal fibrogenic cell type. Ang II produced an early, AT1 receptor-dependent stimulation of CTGF expression and induced a rapid activation of PKC and its downstream p38 MAPK, thereby activating a nuclear factor-κB (NF-κB) and Smad2/3 cross-talk pathway...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28792970/targeting-hepatic-heparin-binding-egf-like-growth-factor-hb-egf-induces-anti-hyperlipidemia-leading-to-reduction-of-angiotensin-ii-induced-aneurysm-development
#16
Seonwook Kim, Lihua Yang, Seongu Kim, Richard G Lee, Mark J Graham, Judith A Berliner, Aldons J Lusis, Lei Cai, Ryan E Temel, Debra L Rateri, Sangderk Lee
OBJECTIVE: The upregulated expression of heparin binding EGF-like growth factor (HB-EGF) in the vessel and circulation is associated with risk of cardiovascular disease. In this study, we tested the effects of HB-EGF targeting using HB-EGF-specific antisense oligonucleotide (ASO) on the development of aortic aneurysm in a mouse aneurysm model. APPROACH AND RESULTS: Low-density lipoprotein receptor (LDLR) deficient mice (male, 16 weeks of age) were injected with control and HB-EGF ASOs for 10 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28761237/membranoproliferative-glomerulonephritis-associated-with-a-human-immunodeficiency-virus-infection
#17
H Rafik, M El Amrani, D El Kabbaj
Type 1 membranoproliferative glomerulonephritis (MPGN) is an uncommon manifestation of human immunodeficiency virus (HIV)-associated renal disease in patients coinfected with hepatitis C virus. We report a case of MPGN characterized by nephrotic syndrome associated with HIV without hepatitis C coinfection. The patient had a favorable response to highly active antiretroviral therapy and angiotensin-converting enzyme inhibitors. Recognition of the MPGN lesion in HIV infection devoid of hepatitis C coinfection must be considered...
July 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28750149/single-center-evaluation-of-the-pharmacokinetics-and-safety-of-the-angiotensin-ii-receptor-antagonist-azilsartan-medoxomil-in-mild-to-moderate-hepatic-impairment
#18
Caroline Dudkowski, Aziz Karim, Zhen Zhao, Alberto B Alonso, Dyal Garg, Richard A Preston
Azilsartan medoxomil (AZL-M) is a potent angiotensin II receptor blocker that decreases blood pressure in a dose-dependent manner. It is a prodrug that is not detected in blood after its oral administration because of its rapid hydrolysis to the active moiety, azilsartan (AZL). AZL undergoes further metabolism to the major metabolite, M-II, and minor metabolites. The objective of this study was to determine the effect of mild to moderate hepatic impairment on the pharmacokinetics of AZL and its major metabolite...
July 27, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28740597/is-hepatic-steatosis-associated-with-left-ventricular-mass-index-increase-in-the-general-population
#19
Katharina Piontek, Carsten O Schmidt, Sebastian E Baumeister, Markus M Lerch, Julia Mayerle, Marcus Dörr, Stephan B Felix, Henry Völzke
AIM: To investigate the association between hepatic steatosis and change in left ventricular mass index (LVMI) over five years, and examine whether systolic and diastolic blood pressures are mediators of the association between hepatic steatosis and LVMI using a general population sample. METHODS: We analyzed data from the Study of Health in Pomerania. The study population comprised 1298 individuals aged 45 to 81 years. Hepatic steatosis was defined as the presence of a hyperechogenic pattern of the liver together with elevated serum alanine transferase levels...
July 8, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28691216/statins-and-ace-inhibitors-are-associated-with-reduced-mortality-and-morbidity-in-chronic-liver-disease
#20
Knut Stokkeland, Christine Takami Lageborn, Anders Ekbom, Jonas Höijer, Matteo Bottai, Per Stål, Karin Söderberg-Löfdal
Liver fibrosis is a common response to many chronic liver diseases. The aim of our study was to explore whether pharmacotherapy for concurrent diseases affects overall mortality, liver-related mortality and liver-related morbidity in patients with chronic liver disease. We performed a register-based cohort study of all patients with a first-time diagnosis of chronic liver disease between 2005 and 2012 in Sweden (n=70 546). Data from the Patient Register, the Prescribed Drug Register and the Death Certificate Register were linked...
July 10, 2017: Basic & Clinical Pharmacology & Toxicology
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