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Angiotensin

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https://www.readbyqxmd.com/read/29054855/h-ras-deletion-protects-against-angiotensin-ii-induced-arterial-hypertension-and-cardiac-remodeling-through-protein-kinase-g-i%C3%AE-pathway-activation
#1
Paloma Martín-Sánchez, Alicia Luengo, Mercedes Griera, María Jesús Orea, Marina López-Olañeta, Antonio Chiloeches, Enrique Lara-Pezzi, Sergio de Frutos, Manuel Rodríguez-Puyol, Laura Calleros, Diego Rodríguez-Puyol
Ras proteins regulate cell survival, growth, differentiation, blood pressure, and fibrosis in some organs. We have demonstrated that H-ras gene deletion produces mice hypotension via a soluble guanylate cyclase-protein kinase G (PKG)-dependent mechanism. In this study, we analyzed the consequences of H-ras deletion on cardiac remodeling induced by continuous angiotensin II (AngII) infusion and the molecular mechanisms implied. Left ventricular posterior wall thickness and mass and cardiomyocyte cross-sectional area were similar between AngII-treated H-Ras knockout (H-ras(-/-) ) and control wild-type (H-ras(+/+) ) mice, as were extracellular matrix protein expression...
October 20, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29054562/exercise-attenuates-dexamethasone-induced-hypertensionthrough-an-improvement-of-baroreflex-activity-independently-of-the-renin-angiotensin-system
#2
Paula B Constantino, Thiago J Dionísio, Francine Duchatsch, Naiara A Herrera, Josiane O Duarte, Carlos F Santos, Carlos C Crestani, Sandra L Amaral
Dexamethasone-induced hypertension may be caused by baroreflex alterations or renin-angiotensin system (RAS) exacerbation. Aerobic training has been recommended for hypertension treatment, but the mechanisms responsible for reduction of arterial pressure (AP) in dexamethasone (DEX) treated rats are still inconclusive.This study evaluated whether mechanisms responsible for training-induced attenuation of hypertension involve changes in autonomic nervous system and in RAS components. Rats underwent aerobic training protocol on treadmill or were kept sedentary for 8 weeks...
October 17, 2017: Steroids
https://www.readbyqxmd.com/read/29054274/seventeen-year-nationwide-trends-in-antihypertensive-drug-use-in-denmark
#3
Jens Sundbøll, Kasper Adelborg, Kathryn E Mansfield, Laurie A Tomlinson, Morten Schmidt
Recent trends in use of antihypertensive drugs are unknown. From Danish nationwide prescription data, we obtained information on primary care use of angiotensin-converting enzyme inhibitors, angiotensin II receptor blockers, beta blockers, diuretics, aldosterone receptor antagonists, and calcium channel blockers. During 1999 to 2015, the use of antihypertensive drugs per 1,000 inhabitants/day increased from 184 to 379 defined daily doses (DDD), corresponding to a rise in the prevalence proportion of users from ≈20% to ≈35%...
September 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29053707/high-glucose-augments-angiotensinogen-in-human-renal-proximal-tubular-cells-through-hepatocyte-nuclear-factor-5
#4
Juan Wang, Yuki Shibayama, Hiroyuki Kobori, Ya Liu, Hideki Kobara, Tsutomu Masaki, Zhiyu Wang, Akira Nishiyama
High glucose has been demonstrated to induce angiotensinogen (AGT) synthesis in the renal proximal tubular cells (RPTCs) of rats, which may further activate the intrarenal renin-angiotensin system (RAS) and contribute to diabetic nephropathy. This study aimed to investigate the effects of high glucose on AGT in the RPTCs of human origin and identify the glucose-responsive transcriptional factor(s) that bind(s) to the DNA sequences of AGT promoter in human RPTCs. Human kidney (HK)-2 cells were treated with normal glucose (5...
2017: PloS One
https://www.readbyqxmd.com/read/29052864/short-term-hypoxia-upregulated-mas-receptor-expression-to-repress-the-at1-r-signaling-pathway-and-attenuate-ang-ii-induced-cardiomyocyte-apoptosis
#5
Ruey-Lin Chang, Chih-Fen Chang, Da-Tong Ju, Tsung-Jung Ho, Tung-Ti Chang, Jing-Wei Lin, Jia-Chun Le, Shiu-Min Cheng, Cecilia-Hsuan Day, V Vijaya Padma, Chih-Yang Huang
Hypertension-stimulated cardiac hypertrophy and apoptosis play critical roles in the progression of heart failure. Our previous study suggested that hypertensive angiotensin II (Ang II) enhanced insulin-like growth factor receptor II (IGF-IIR) expression and cardiomyocyte apoptosis, which are involved JNK activation, sirtuin1 (SIRT1) degradation, and heat-shock transcription factor 1 (HSF1) acetylation. Moreover, previous studies have implied that short-term hypoxia (STH) might exert cardioprotective effects...
October 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29052263/ang-ii-ccr2-5-axis-dependent-monocyte-macrophage-recruitment-contributed-to-experimental-autoimmune-myocarditis-progression
#6
Hongxiang Lu, Gangjun Zong, Shanshan Zhou, Yuanyuan Jiang, Rong Chen, Zhaoliang Su, Yan Wu
Angiotensin II (ANG II) plays critical roles in modulation of circulatory homeostasis and activation of innate and adaptive immunity. Furthermore, ANG II has also been implicated in several mouse models of autoimmune disease. However, it remains incompletely clear how ANG II regulates macrophage and involves in experimental autoimmune myocarditis (EAM) development. Therefore, the present work was to address the above question and to explore the possible mechanism. The BALB/c mice were used to induce EAM model...
October 20, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/29051663/%C3%AE%C2%BA-casein-as-a-source-of-short-chain-bioactive-peptides-generated-by-lactobacillus-helveticus
#7
Katarzyna Skrzypczak, Waldemar Gustaw, Dominik Szwajgier, Emilia Fornal, Adam Waśko
This paper explores the ability of Lactobacillus helveticus strains to release sequences of short biologically active peptides (containing 2-10 amino acid residues) from casein. The proteolytic enzymes of the tested strains exhibit different patterns of cleavage of CN fractions. The modification of κ-casein (κ-CN) with pyrrolidone carboxylic acid inhibits the proteolytic activity of strains L. helveticus 141 and the reference strain (DSMZ 20075), while the modification with phosphothreonine inhibits enzymes of all the tested bacteria...
October 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29051307/effect-of-renal-denervation-on-urine-angiotensinogen-excretion-in-prenatally-programmed-rats
#8
Asifhusen Mansuri, Susan K Legan, Jyoti Jain, Issa Alhamoud, Jyothsna Gattineni, Michel Baum
Prenatal programming results in an increase in blood pressure in adult offspring. We have shown that compared to control adult offspring whose mothers were fed a 20% protein diet, programmed adults whose mothers were fed a 6% protein diet during the last half of pregnancy have an increase in renal sympathetic nerve activity and urinary angiotensinogen/creatinine levels. We hypothesized that the increase in urinary angiotensinogen was mediated by renal sympathetic nerve activity in programmed rats. In this study performed in 3 month old rats, renal denervation resulted in normalization of blood pressure in the 6% programmed group (150 ± 3 Hg in 6% sham vs...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29051045/angiotensin-ii-regulates-%C3%AE-enac-in-human-umbilical-vein-endothelial-cells
#9
Charles A Downs, Nicholle M Johnson, Camila Coca, My N Helms
The amiloride-sensitive epithelial sodium channel (ENaC) has been characterized in a variety of non-epithelial tissues. In the current study we sought to understand the effect of angiotensin II on δ ENaC function using human umbilical vein endothelial cells (HUVECs). The δ ENaC subunit is found in humans, but notably absent in rat and most mouse epithelial tissues. In this study we report the presence of δ ENaC in HUVECS with a half-life of ~80min and a change in δ ENaC abundance when HUVECs were treated with angiotensin II...
October 16, 2017: Microvascular Research
https://www.readbyqxmd.com/read/29050747/soluble-pro-renin-receptor-in-preeclampsia-and-diabetic-pregnancies
#10
Meryam Sugulle, Harald Heidecke, Ulrike Maschke, Florian Herse, A H Jan Danser, Dominik N Mueller, Anne Cathrine Staff, Ralf Dechend
Women with preexisting or gestational diabetes mellitus have an increased risk for developing preeclampsia. Diabetes and pregnancy are both characterized by very high prorenin levels and renin-angiotensin system activation. Prorenin bound to the (pro)renin receptor has enzymatic activity. We hypothesized that soluble (pro)renin receptor levels are elevated in high-risk pregnancies. Third trimester maternal blood samples from complicated pregnancies (n = 165), (preeclampsia [n = 76], diabetes mellitus [type I diabetes, n = 35; type II diabetes, n = 11; gestational diabetes mellitus, n = 43]), and healthy pregnancies (n = 49) were analyzed for prorenin, renin, and soluble (pro)renin receptor...
October 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/29050502/first-evidence-trap-induced-platelet-aggregation-is-reduced-in-patients-receiving-xabans
#11
Frantisek Nehaj, Juraj Sokol, Jela Ivankova, Michal Mokan, Frantisek Kovar, Jan Stasko, Marian Mokan
The availability of direct oral anticoagulants has caused a paradigm shift in the management of thrombosis. Rivaroxaban and apixaban are 2 direct oral anticoagulants whose target specificity is activated factor X (FXa). However, it is still not fully understood if and how xabans impact platelet function. This observational study aimed to assess the in vitro platelet function in patients with atrial fibrillation receiving xabans. This was a single-center study quantifying platelet aggregation in 41 patients treated with apixaban or rivaroxaban by light transmission aggregometry...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/29050316/pharmacokinetics-and-drug-drug-interaction-between-enalapril-enalaprilat-and-felodipine-extended-release-er-in-healthy-subjects
#12
Dai Li, Sumei Xu, Yulu Wang, Dan Li, Xiaomin Li, Jing Pan, Pingsheng Xu
Since angiotensin-converting enzyme (ACE) inhibitors and calcium antagonists have complimentary mechanisms of action, enalapril, an ACE inhibitor, is used in combination with felodipine, a vascular selective dihydropyridine calcium antagonist, for the treatment of hypertension. The present study was designed to investigate the possible drug-drug interaction between these two agents in Chinese healthy subjects. A randomized, open-label, multiple-dose, 3-treatment, 3-period, 6-sequence cross-over study enrolling 12 healthy subjects (six male and six female subjects) was performed...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29049981/angiotensin-receptor-blockade-improves-cardiac-mitochondrial-activity-in-response-to-an-acute-glucose-load-in-obese-insulin-resistant-rats
#13
Max Thorwald, Ruben Rodriguez, Andrew Lee, Bridget Martinez, Janos Peti-Peterdi, Daisuke Nakano, Akira Nishiyama, Rudy M Ortiz
Hyperglycemia increases the risk of oxidant overproduction in the heart through activation of a multitude of pathways. Oxidation of mitochondrial enzymes may impair their function resulting in accumulation of intermediates and reverse electron transfer, contributing to mitochondrial dysfunction. Furthermore, the renin-angiotensin system (RAS) becomes inappropriately activated during metabolic syndrome, increasing oxidant production. To combat excess oxidant production, the transcription factor, nuclear factor erythriod-2- related factor 2 (Nrf2), induces expression of many antioxidant genes...
October 7, 2017: Redox Biology
https://www.readbyqxmd.com/read/29049415/effect-of-diacerein-on-renal-function-and-inflammatory-cytokines-in-participants-with-type-2-diabetes-mellitus-and-chronic-kidney-disease-a-randomized-controlled-trial
#14
Fabiana Piovesan, Glaucia S Tres, Leila B Moreira, Michael E Andrades, Hugo K Lisboa, Sandra C Fuchs
Diacerein seems to improve metabolic control and reduce inflammatory marker levels in individuals with type 2 diabetes mellitus (Type 2 DM), but for participants with chronic kidney disease (CKD) its effect is unknown. This study aimed to evaluate the effect of diacerein vs. placebo on urinary albumin/creatinine ratio (ACR), glomerular filtration rate (GFR), and inflammatory cytokines in type 2 DM participants with CKD. Blood pressure (BP) and metabolic control were secondary outcomes. This randomized, placebo-controlled, parallel trial of adjuvant treatment of type 2 DM with diacerein enrolled seventy-two participants with CKD, aged 30-80 years, with glycated hemoglobin levels from 53-97 mmol/mol (7...
2017: PloS One
https://www.readbyqxmd.com/read/29049325/effect-of-therapeutic-interchange-on-medication-reconciliation-during-hospitalization-and-upon-discharge-in-a-geriatric-population
#15
Jessica S Wang, Robert L Fogerty, Leora I Horwitz
BACKGROUND: Therapeutic interchange of a same class medication for an outpatient medication is a widespread practice during hospitalization in response to limited hospital formularies. However, therapeutic interchange may increase risk of medication errors. The objective was to characterize the prevalence and safety of therapeutic interchange. METHODS AND FINDINGS: Secondary analysis of a transitions of care study. We included patients over age 64 admitted to a tertiary care hospital between 2009-2010 with heart failure, pneumonia, or acute coronary syndrome who were taking a medication in any of six commonly-interchanged classes on admission: proton pump inhibitors (PPIs), histamine H2-receptor antagonists (H2 blockers), hydroxymethylglutaryl CoA reductase inhibitors (statins), angiotensin-converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), and inhaled corticosteroids (ICS)...
2017: PloS One
https://www.readbyqxmd.com/read/29049227/association-of-central-blood-pressure-and-cardiovascular-diseases-in-diabetic-patients-with-hypertension
#16
Lei Yang, Bo Qin, Xiaojuan Zhang, Yanrong Chen, Jian Hou
To evaluate association of central blood pressure (BP) and cardiovascular disease (CVD) in diabetic patients with hypertension.This was a cross-section study and 360 participants were enrolled. Baseline characteristics were collected and indices of central BP including central systolic/diastolic BP (SBP/DBP), augmentation index adjusted for 75 beats per minute of heart rate (AIx@75) were measured. Participants were separated into with and without CVD groups and between-group differences were assessed. Linear regression analysis was used to evaluate potential risk factors for increased AIx@75...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29049116/basic-translational-development-of-forthcoming-opioid-and-nonopioid-targeted-pain-therapeutics
#17
Nebojsa Nick Knezevic, Ajay Yekkirala, Tony L Yaksh
Opioids represent an efficacious therapeutic modality for some, but not all pain states. Singular reliance on opioid therapy for pain management has limitations, and abuse potential has deleterious consequences for patient and society. Our understanding of pain biology has yielded insights and opportunities for alternatives to conventional opioid agonists. The aim is to have efficacious therapies, with acceptable side effect profiles and minimal abuse potential, which is to say an absence of reinforcing activity in the absence of a pain state...
November 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29049001/effects-of-melatonin-on-mechanisms-involved-in-hypertension-using-human-umbilical-vein-endothelial-cells
#18
Guangfang Shao, Suping Zhang, Jihua Nie, Jianxiang Li, Jian Tong
Changes in diurnal rhythmicity in blood pressure (BP) are associated with hypertension and consequent cardiovascular damage. The involvement of diurnal rhythmicity as a pathogenic factor in hypertension is not fully understood. Since the hormone melatonin (MLT) regulates circadian rhythm, it was also of interest to determine whether this hormone played a role in hypertension-related alterations in circadian rhythm. Thus the aim of this study was to examine the mechanisms underlying MLT-mediated antihypertension...
October 19, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/29048735/6-hydroxydopamine-induces-brain-vascular-endothelial-inflammation
#19
Qizhi Fu, Runluo Song, Zhongxi Yang, Qi Shan, Wenna Chen
Disruption of the blood-brain barrier associated with endothelial dysfunction is an important hallmark of Parkinson's disease (PD). 6-Hydroxydopamine (6-OHDA) is a synthetic dopamine derivate often used to model PD as it results in retrograde degeneration of striatal dopaminergic (DA) terminals. Presently, the effects of 6-OHDA on endothelial dysfunction remain unknown. Using a 6-OHDA rodent model of PD, we found that administration of 6-OHDA could increase the expression of endothelial adhesion molecules, such as intercellular adhesion molecule 1 (ICAM-1), vascular cell adhesion molecule 1 (VCAM-1), and E-selectin...
October 19, 2017: IUBMB Life
https://www.readbyqxmd.com/read/29048654/telmisartan-inhibits-hepatocellular-carcinoma-cell-proliferation-in-vitro-by-inducing-cell-cycle-arrest
#20
Kyoko Oura, Tomoko Tadokoro, Shintaro Fujihara, Asahiro Morishita, Taiga Chiyo, Eri Samukawa, Yoshimi Yamana, Koji Fujita, Teppei Sakamoto, Takako Nomura, Hirohito Yoneyama, Hideki Kobara, Hirohito Mori, Hisakazu Iwama, Keiichi Okano, Yasuyuki Suzuki, Tsutomu Masaki
Hepatocellular carcinoma (HCC) is the most common primary malignancy of the liver and the third leading cause of cancer-related death. Telmisartan, a widely used antihypertensive drug, is an angiotensin II type 1 (AT1) receptor blocker (ARB) that might inhibit cancer cell proliferation, but the mechanisms through which telmisartan affects various cancers remain unknown. The aim of the present study was to evaluate the effects of telmisartan on human HCC and to assess the expression of microRNAs (miRNAs). We studied the effects of telmisartan on HCC cells using the HLF, HLE, HepG2, HuH-7 and PLC/PRF/5 cell lines...
September 20, 2017: Oncology Reports
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