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https://www.readbyqxmd.com/read/29784903/exercise-ameliorates-endoplasmic-reticulum-stress-mediated-vascular-dysfunction-in-mesenteric-arteries-in-atherosclerosis
#1
Junyoung Hong, Kwangchan Kim, Eunkyung Park, Jonghae Lee, Melissa M Markofski, Sean P Marrelli, Yoonjung Park
Endoplasmic reticulum (ER) stress is closely associated with atherosclerosis, but the effects of exercise on ER stress-mediated endothelial dysfunction in atherosclerosis is not yet fully understood. We assessed endothelium-dependent vasodilation in isolated mesenteric arteries from wild type (WT), WT with exercise (WT-EX), ApoE knockout (ApoE KO), and ApoE KO mice with exercise (ApoE KO-EX). Vasodilation to acetylcholine (ACh) was elicited in the presence of inhibitors of ER stress, eNOS, caspase-1, and UCP-2 (Tudca, L-NAME, AC-YVARD-cmk, and Genipin, respectively) and the ER stress inducer (Tunicamycin)...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29783016/systematic-investigation-of-the-erigeron-breviscapus-mechanism-for-treating-cerebrovascular-disease
#2
Jiangmei Wang, Yangyang Chen, Baoshi Liu, Qian Wang, Lulu Zhang, Zhenzhong Wang, Jun Zhou, Wei Xiao, Chunli Zheng, Yonghua Wang
ETHNOPHARMACOLOGICAL RELEVANCE: Cerebrovascular diseases (CBVDs), characterized by striking morbidity and mortality, have become the most common life-threatening diseases. The existing drugs of CBVDs target one or a few of pathogenic factors, the efficacy of which is limited because of the complexity of CBVDs. Traditional Chinese medicine (TCM), featured by multi-component and multi-target endows the great effectiveness in CBVDs treatment. For instance, Erigeron breviscapus (vant.) Hand...
May 18, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29782857/quaternary-ammonium-salt-of-u50-488h-elicits-protective-effects-against-hypoxic-pulmonary-hypertension
#3
Yaguang Zhou, Xin Tian, Xueying Wang, Yuanbo Wang, Rong Fan, Yuemin Wang, Na Feng, Shumiao Zhang, Haitao Guo, Xiaoming Gu, Min Jia, Wen Yin, Zuoxu Hou, Juan Li, Jianming Pei
The present study aimed to investigate the role of quaternary ammonium salt of U50,488H (Q-U50,488H) in hypoxic pulmonary hypertension (HPH) and underlying mechanisms involved. A HPH animal model was established in rats under hypoxia and the mean pulmonary arterial pressure (mPAP) and right ventricular pressure (RVP) were measured. Relaxation of the pulmonary artery in response to Q-U50,488H was determined. In addition, expression and activity of endothelial nitric oxide (NO) synthase (eNOS) and inducible NO synthase (iNOS) with NO content, Akt expression, total antioxidant capacity (T-AOC), and gp91phox were evaluated...
May 18, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29782277/-association-of-polymorphism-4a-4b-and-4b-4b-in-endothelial-nitric-oxide-synthase-gene-and-markers-of-endothelial-dysfunction-in-patients-with-chronic-heart-failure
#4
E A Polunina, L P Voronina, I V Sevostyanova, O S Polunina, D S Tarasochkina
AIM: To examine the association of polymorphism 4a/4b and 4b/4b in endothelial nitric oxide synthase gene (eNOS) with levels of natriuretic peptide type-C, endothelin-1 and vasoregulative endothelial function in patients with chronic heart failure (CHF) depending on the ejection fraction of the left ventricle. MATERIALS AND METHODS: The study has included 280 patients with CHF of ischemic etiology and 60 somatically healthy individuals. A comprehensive assessment of the markers of the vascular endothelium function was carried out for all patients (endothelial function coefficient, natriuretic peptide type-C, endothelin-1) in association of polymorphism 4a/4b and 4b/4b gene of eNOS...
2018: Kardiologiia
https://www.readbyqxmd.com/read/29780000/the-effects-of-proton-pump-inhibitor-on-hepatic-vascular-responsiveness-and-hemodynamics-in-cirrhotic-rats
#5
I-Fang Hsin, Shao-Jung Hsu, Chiao-Lin Chuang, Teh-Ia Huo, Hui-Chun Huang, Fa-Yauh Lee, Hsin-Ling Ho, Shu-Yu Chang, Shou-Dong Lee
BACKGROUND: Liver cirrhosis is associated with increased intrahepatic resistance due to hepatic fibrosis and exaggerated vasoconstriction. Recent studies have indicated that proton pump inhibitors (PPIs), in addition to acid suppression, modulate vasoactive substances and vasoresponsiveness. PPIs are frequently prescribed in patients with cirrhosis due to a higher prevalence of peptic ulcers, however other impacts are unknown. METHODS: Liver cirrhosis was induced in Sprague-Dawley rats with common bile duct ligation (BDL)...
May 17, 2018: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29779708/imaging-mass-spectrometry-reveals-direct-albumin-fragmentation-within-the-diabetic-kidney
#6
Kerri J Grove, Nichole M Lareau, Paul A Voziyan, Fenghua Zeng, Raymond C Harris, Billy G Hudson, Richard M Caprioli
Albumin degradation in the renal tubules is impaired in diabetic nephropathy such that levels of the resulting albumin fragments increase with the degree of renal injury. However, the mechanism of albumin degradation is unknown. In particular, fragmentation of the endogenous native albumin has not been demonstrated in the kidney and the enzymes that may contribute to fragmentation have not been identified. To explore this we utilized matrix-assisted laser desorption/ionization imaging mass spectrometry for molecular profiling of specific renal regions without disturbing distinct tissue morphology...
May 17, 2018: Kidney International
https://www.readbyqxmd.com/read/29778909/n-acetylcysteine-protects-against-diabetic-nephropathy-through-control-of-oxidative-and-nitrosative-stress-by-recovery-of-nitric-oxide-in-rats
#7
Guilherme B Nogueira, Giovana R Punaro, Clemerson S Oliveira, Fabiane R Maciel, Thamires O Fernandes, Deyse Y Lima, Adelson M Rodrigues, Margaret G Mouro, Sergio R R Araujo, Elisa M S Higa
The diabetes mellitus (DM) induces several changes, with substantial increase of reactive oxygen species (ROS). The ROS cause damage to systemic and renal microvasculature, which could be one of the mechanisms involved in the development of diabetic nephropathy (DN). The ROS modulate other substances like the nitric oxide (NO), a vasodilator with important role in the renal function. N-acetylcysteine (NAC) is an antioxidant that acts replenishing intracellular cysteine levels, which is essential for glutathione formation...
May 17, 2018: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29777791/ticagrelor-protects-against-angii-induced-endothelial-dysfunction-by-alleviating-endoplasmic-reticulum-stress
#8
Xiaoyu Wang, Xuejie Han, Minghui Li, Yu Han, Yun Zhang, Shiqi Zhao, Yue Li
Ticagrelor has been reported to decrease cardiovascular mortality compared with clopidogrel. This benefit cannot be fully explained by the more efficient platelet inhibition. Many studies demonstrated that ticagrelor improved endothelial function, leaving the mechanism elusive though. The present study aims to investigate whether ticagrelor protects against endothelial dysfunction induced by angiotensinII (AngII) through alleviating endoplasmic reticulum (ER) stress. Male Sprague Dawley rats were infused with AngII or vehicle and administrated with ticagrelor or vehicle for 14 days...
May 16, 2018: Microvascular Research
https://www.readbyqxmd.com/read/29775414/venoarterial-communication-mediates-arterial-wall-shear-stress-induced-maternal-uterine-vascular-remodeling-during-pregnancy
#9
Nga Ling Ko, Liam John, Aaron Gelinne, Maurizio Mandala, George Osol
Although expansive remodeling of the maternal uterine circulation during pregnancy is essential for maintaining uteroplacental perfusion and normal fetal growth, the underlying physiological mechanisms are not well understood. Using a rat model, surgical approaches were used to alter uterine hemodynamics and wall shear stress (WSS) in order to evaluate the effects of WSS and venoarterial communication (e.g. transfer of placentally derived growth signals from post-placental veins to pre-placental arteries) on gestational uterine vascular remodeling...
May 18, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29771821/the-effects-of-exercise-aspirin-and-celecoxib-in-an-atherogenic-environment
#10
Heather Grimm, Jan Kretzschmar, Marc D Cook, Michael D Brown
INTRODUCTION: Optimal vascular function is a hallmark of cardiovascular health. Specifically, the balance of vasoconstricting and vasodilating substances is recognized as a marker of vascular health. One of the greatest challenges to vascular health and vasodilatory balance is tumor necrosis factor alpha (TNFα) mediated inflammation. Uncovering effective strategies that maintain a vascular environment that is more vasodilatory and anti-thrombotic in the face of an inflammatory challenge is favorable...
April 30, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29771623/effects-of-an-ethanolic-extract-of-mulberry-fruit-on-blood-pressure-and-vascular-remodeling-in-spontaneous-hypertensive-rats
#11
Sang Woong Park, Kyung Chul Shin, Soon-Kyu Yoou, Hyun Ji Park, Seo Hyeon Eun, Young Min Bae, Hyang Mi Lee, Han-Jung Chae, Soo-Wan Chae, Bok Hee Choi
Mulberry (Morus alba) has been used in traditional oriental medicine since ages. Recently, it has been reported that mulberry produces hypotensive effects through the eNOS signaling pathway. However, the mechanism underlying the hypotensive effects of mulberry is not entirely clear. Moreover, the effects of mulberry on vascular remodeling events such as hyperplasia, an important etiology in the pathogenesis of hypertension and arteriosclerosis, are also ambiguous. Here, we hypothesized that an ethanolic extract of mulberry fruit (EMF) has beneficial effects on vascular remodeling and produces hypotensive effects...
May 17, 2018: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29771429/the-relationship-between-number-and-function-of-epcs-and-concentration-of-vegf165-and-sdf-1-in-coronary-artery-spasm
#12
Z-Q Sheng, Y-F Li, K-L Zheng, H-H Lu, J Xie, H Wu, B Xu
OBJECTIVE: We aimed at investigating the functions of endothelial progenitor cells (EPCs) in the pathophysiology of coronary artery spasm (CAS) and coronary artery disease (CAD), as well as to evaluate the correlation of these diseases with the number and function of EPCs, the plasma concentration of vascular endothelial growth factor 165 (VEGF165) and stromal cell-derived factor 1 (SDF-1). PATIENTS AND METHODS: Participants were recruited into three groups, CAS, CAD and the control...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29770336/epigallocatechin-3-gallate-reduces-neuronal-apoptosis-in-rats-after-middle-cerebral-artery-occlusion-injury-via-pi3k-akt-enos-signaling-pathway
#13
Wang Nan, Xu Zhonghang, Chen Keyan, Liu Tongtong, Guo Wanshu, Xu Zhongxin
Background/Aims: Epigallocatechin-3-gallate (EGCG) has neuroprotective effects and the ability to resist amyloidosis. This study observed the protective effect of EGCG against neuronal injury in rat models of middle cerebral artery occlusion (MCAO) and investigated the mechanism of action of PI3K/AKT/eNOS signaling pathway. Methods: Rat models of permanent MCAO were established using the suture method. Rat behavior was measured using neurological deficit score. Pathology and apoptosis were measured using HE staining and TUNEL...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29769708/maternal-supraphysiological-hypercholesterolemia-associates-with-endothelial-dysfunction-of-the-placental-microvasculature
#14
Bárbara Fuenzalida, Bastián Sobrevia, Claudette Cantin, Lorena Carvajal, Rocío Salsoso, Jaime Gutiérrez, Susana Contreras-Duarte, Luis Sobrevia, Andrea Leiva
Maternal physiological or supraphysiological hypercholesterolemia (MPH, MSPH) occurs during pregnancy. MSPH is associated with foetal endothelial dysfunction and atherosclerosis. However, the potential effects of MSPH on placental microvasculature are unknown. The aim of this study was to determine whether MSPH alters endothelial function in the placental microvasculature both ex vivo in venules and arterioles from the placental villi and in vitro in primary cultures of placental microvascular endothelial cells (hPMEC)...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769449/fatty-acid-receptor-modulator-pbi-4050-inhibits-kidney-fibrosis-and-improves-glycemic-control
#15
Yan Li, Sungjin Chung, Zhilian Li, Jessica M Overstreet, Lyne Gagnon, Brigitte Grouix, Martin Leduc, Pierre Laurin, Ming-Zhi Zhang, Raymond C Harris
Extensive kidney fibrosis occurs in several types of chronic kidney diseases. PBI-4050, a potentially novel first-in-class orally active low-molecular weight compound, has antifibrotic and antiinflammatory properties. We examined whether PBI-4050 affected the progression of diabetic nephropathy (DN) in a mouse model of accelerated type 2 diabetes and in a model of selective tubulointerstitial fibrosis. eNOS-/- db/db mice were treated with PBI-4050 from 8-20 weeks of age (early treatment) or from 16-24 weeks of age (late treatment)...
May 17, 2018: JCI Insight
https://www.readbyqxmd.com/read/29766980/ripasudil-attenuates-lipopolysaccharide-lps-mediated-apoptosis-and-inflammation-in-pulmonary-microvascular-endothelial-cells-via-rock2-enos-signaling
#16
Jianxin Yang, Feng Ruan, Zhongjun Zheng
BACKGROUND Microvascular endothelial inflammation and apoptosis are responsible for septic acute lung injury (ALI). Ripasudil is a novel Rho/Rho kinase (ROCK) inhibitor which shows therapeutic effects on several vascular diseases. The aim of this study was to investigate the protective effects and correlated molecular mechanisms of ripasudil on lipopolysaccharide- induced inflammation and apoptosis of pulmonary microvascular endothelial cells (PMVECs). MATERIAL AND METHODS Cultured PMVECs were exposed to lipopolysaccharide (LPS)...
May 16, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29765488/-morinda-citrifolia-l-leaf-extract-protects-against-cerebral-ischemia-and-osteoporosis-in-an-in-vivo-experimental-model-of-menopause
#17
Jintanaporn Wattanathorn, Cholathip Thipkaew, Wipawee Thukham-Mee, Supaporn Muchimapura, Panakaporn Wannanon, Terdthai Tong-Un
We aimed to determine the protective effects against cerebral ischemia and osteoporosis of Morinda citrifolia extract in experimental menopause. The neuroprotective effect was assessed by giving M. citrifolia leaf extract at doses of 2, 10, and 50 mg/kg BW to the bilateral ovariectomized (OVX) rats for 7 days. Then, they were occluded in the right middle cerebral artery (MCAO) for 90 minutes. The neurological score, brain infarction volume, oxidative stress status, and ERK1/2 and eNOS activities were assessed 24 hours later...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29765229/the-genetic-association-between-inos-and-enos-polymorphisms-and-gastric-cancer-risk-a-meta-analysis
#18
Yi Zhu, Honggang Jiang, Zhiheng Chen, Bohao Lu, Jin Li, Yuping Peng, Xuning Shen
Objective: There are a number of susceptible factors for an increased risk of gastric cancer. Nitric oxide (NO) is considered to be associated with the development of a range of cancers. In particular, inducible nitric oxide synthase (iNOS) and endothelial nitric oxide synthase (eNOS) are known to play a central role in the production of NO. Published studies relating to the association between eNOS rs1799983, rs2070744, and iNOS rs2297518 polymorphisms and the risk of gastric cancer risk are conflicting and inconclusive and require further analysis...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29760722/microrna-126-priming-enhances-functions-of-endothelial-progenitor-cells-under-physiological-and-hypoxic-conditions-and-their-therapeutic-efficacy-in-cerebral-ischemic-damage
#19
Qunwen Pan, Jieyi Zheng, Donghui Du, Xiaorong Liao, Chunlian Ma, Yi Yang, Yanyu Chen, Wangtao Zhong, Xiaotang Ma
Endothelial progenitor cells (EPCs) have shown the potential for treating ischemic stroke (IS), while microRNA-126 (miR-126) is reported to have beneficial effects on endothelial function and angiogenesis. In this study, we investigated the effects of miR-126 overexpression on EPCs and explore the efficacy of miR-126-primed EPCs (EPCmiR-126 ) in treating IS. The effects of miR-126 overexpression on EPC proliferation, migratory, tube formation capacity, reactive oxygen species (ROS) production, and nitric oxide (NO) generation were determined...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29760379/autophagic-degradation-of-caveolin-1-promotes-liver-sinusoidal-endothelial-cells-defenestration
#20
Xiaoying Luo, Dan Wang, Xintao Zhu, Guozhen Wang, Yuehua You, Zuowei Ning, Yang Li, Siyi Jin, Yun Huang, Ye Hu, Tingting Chen, Ying Meng, Xu Li
Autophagy, interacting with actin cytoskeleton and the NO-dependent pathway, may affect the phenotype and function of endothelial cells. Moreover, caveolin-1 (Cav-1), as a structure protein in liver sinusoidal endothelial cells (LSECs), is closely related to autophagy. Hence, we aim to explore the role of autophagic degradation of Cav-1 in LSECs defenestration. In vivo, we found the increase of autophagy in liver sinusoidal endothelium in human fibrotic liver. Furthermore, autophagy, degradation of Cav-1, and actin filament (F-actin) remodeling were triggered during the process of CCl4-induced LSECs defenestration; in contrast, autophagy inhibitor 3MA diminished the degradation of Cav-1 to maintain fenestrae and relieve CCl4-induced fibrosis...
May 14, 2018: Cell Death & Disease
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