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https://www.readbyqxmd.com/read/28087333/nicotinamide-nucleotide-transhydrogenase-activity-impacts-mitochondrial-redox-balance-and-the-development-of-hypertension-in-mice
#1
Igor Leskov, Amber Neville, Xinggui Shen, Sibile Pardue, Christopher G Kevil, D Neil Granger, David M Krzywanski
Oxidant stress contributes to the initiation and progression of hypertension (HTN) by enhancing endothelial dysfunction and/or causing perturbations in nitric oxide homeostasis. Differences in mitochondrial function may augment this process and provide insight into why age of onset and clinical outcomes differ among individuals from distinct ethnic groups. We have previously demonstrated that variation in normal mitochondrial function and oxidant production exists in endothelial cells from individuals of Caucasian and African-American ethnicity and that this variation contributes to endothelial dysfunction...
December 16, 2016: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28077855/the-nox2-derived-reactive-oxygen-species-damaged-endothelial-nitric-oxide-system-via-suppressed-bkca-skca-in-preeclampsia
#2
Jie Chen, Qinqin Gao, Lin Jiang, Xueqin Feng, Xiaolin Zhu, Xiaorong Fan, Caiping Mao, Zhice Xu
The endothelial nitric oxide (NO) system may be damaged in preeclampsia; however, the involved mechanisms are unclear. In this study, we used primary human umbilical vein endothelial cells (HUVECs) to evaluate the endothelial NO system in preeclampsia and to determine the underlying mechanisms that are involved. We isolated and cultured HUVECs from normal and preeclamptic pregnancies and evaluated endothelial NO synthase enzyme (eNOS) expression and NO production. Whole-cell K(+) currents and oxidative stress were also determined in normal and preeclamptic HUVECs...
January 12, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28056166/nitric-oxide-for-respiratory-failure-in-infants-born-at-or-near-term
#3
REVIEW
Keith J Barrington, Neil Finer, Thomas Pennaforte, Gabriel Altit
BACKGROUND: Nitric oxide (NO) is a major endogenous regulator of vascular tone. Inhaled nitric oxide (iNO) gas has been investigated as treatment for persistent pulmonary hypertension of the newborn. OBJECTIVES: To determine whether treatment of hypoxaemic term and near-term newborn infants with iNO improves oxygenation and reduces rate of death and use of extracorporeal membrane oxygenation (ECMO), or affects long-term neurodevelopmental outcomes. SEARCH METHODS: We used the standard search strategy of the Cochrane Neonatal Review Group to search the Cochrane Central Register of Controlled Trials (CENTRAL; 2016, Issue 1), MEDLINE via PubMed (1966 to January 2016), Embase (1980 to January 2016) and the Cumulative Index to Nursing and Allied Health Literature (CINAHL; 1982 to January 2016)...
January 5, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28031017/nitric-oxide-signaling-and-the-cross-talk-with-prostanoids-pathways-in-vascular-system
#4
Bruno R Silva, Tiago D Paula, Michele Paulo, Lusiane M Bendhack
BACKGROUND: This review provides an overview of the cellular signaling of nitric oxide (NO) and prostanoids in vascular cells and the possible cross talk between their pathways, mainly in hypertension, since the imbalance of these two systems has been attributed to development of some cardiovascular diseases. It also deals with the modulation of vasodilation induced by NO donors. NO is a well-known second messenger involved in many cellular functions. CONCLUSION: In the vascular system, the NO produced by endothelial NO-synthase (eNOS) or released by NO donors acts in vascular smooth muscle cells, the binding of NO to Fe2+-heme of soluble guanylyl-cyclase (sGC) activates sGC and the production of cyclic guanosine-3-5-monophosphate (cGMP)...
December 28, 2016: Medicinal Chemistry
https://www.readbyqxmd.com/read/28029743/statins-ameliorate-pulmonary-hypertension-secondary-to-left-ventricular-dysfunction-through-the-rho-kinase-pathway-and-nadph-oxidase
#5
I-Chen Chen, Mian-Shin Tan, Bin-Nan Wu, Chee-Yin Chai, Jwu-Lai Yeh, Shah-Hwa Chou, Ing-Jun Chen, Zen-Kong Dai
BACKGROUND: Pulmonary hypertension (PH) is a devastating disorder, for which no therapy is curative. It has been reported that pulmonary vascular remodeling, associated with increasing mean pulmonary arterial pressure and upregulated expression of endothelial nitric oxide synthase (eNOS), endothelin-1 (ET-1), RhoA/RhoH-kinase results in the development of PH. Oxidative stress and the RhoA/Rho-kinase pathway are also thought to be involved in the pathophysiology of PH. Statins are 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (HMG-CoA reductase inhibitors) with pleiotropic effects and are potential agents for the treatment of PH...
December 28, 2016: Pediatric Pulmonology
https://www.readbyqxmd.com/read/27994597/aging-male-spontaneously-hypertensive-rat-as-an-animal-model-for-the-evaluation-of-the-interplay-between-contrast-induced-acute-kidney-injury-and-cardiorenal-syndrome-in-humans
#6
REVIEW
Jun Zhang, Mohammad Kazem Fallahzadeh, Peter A McCullough
BACKGROUND: Although there are some animal models for biomarkers of contrast-induced acute kidney injury (CI-AKI), for cardiorenal syndrome (CRS) and for acute renal failure, the interplay between CI-AKI and CRS has yet to be evaluated. Insight into the pathogenesis of CRS is urgently needed from animal models in order to foster the discovery and implementation of novel biomarkers for this disease. Specially designed animal models for type 1 and 3 CRS, particularly CI-AKI, have not yet emerged...
November 2016: Cardiorenal Medicine
https://www.readbyqxmd.com/read/27988384/the-opposing-roles-of-no-and-oxidative-stress-in-cardiovascular-disease
#7
Rebecca H Ritchie, Grant R Drummond, Christopher G Sobey, T Michael De Silva, Barbara K Kemp-Harper
Nitric oxide (NO) plays a pivotal role in the maintenance of cardiovascular homeostasis. A reduction in the bioavailability of endogenous NO, manifest as a decrease in the production and/or impaired signaling, is associated with many cardiovascular diseases including hypertension, atherosclerosis, stroke and heart failure. There is substantial evidence that reactive oxygen species (ROS), generated predominantly from NADPH oxidases (Nox), are responsible for the reduced NO bioavailability in vascular and cardiac pathologies...
December 15, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27918455/targeting-on-asymmetric-dimethylarginine-related-nitric-oxide-reactive-oxygen-species-imbalance-to-reprogram-the-development-of-hypertension
#8
REVIEW
You-Lin Tain, Chien-Ning Hsu
Adult-onset diseases, including hypertension, can originate from early life, known as the developmental origins of health and disease (DOHaD). Because the developing kidney is vulnerable to early-life insults, renal programming is considered key in the developmental programming of hypertension. Asymmetric dimethylarginine (ADMA), an endogenous nitric oxide (NO) synthase inhibitor, can regulate the NO-reactive oxygen species (ROS) balance, and is involved in the development of hypertension. Reprogramming interventions aimed at NO-ROS balance can be protective in both genetic and developmentally programmed hypertension...
December 2, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27889958/ace2-and-the-homolog-collectrin-in-the-modulation-of-nitric-oxide-and-oxidative-stress-in-blood-pressure-homeostasis-and-vascular-injury
#9
Guang Yang, Pei-Lun Chu, Lars C Rump, Thu H Le, Johannes Stegbauer
SIGNIFICANCE: Hypertension is the leading risk factor causing mortality and morbidity worldwide. Angiotensin (Ang) II, the most active metabolite of the renin-angiotensin system, plays an outstanding role in the pathogenesis of hypertension and vascular injury. Activation of angiotensin converting enzyme 2 (ACE2) has shown to attenuate devastating effects of Ang II in the cardiovascular system by reducing Ang II degradation and increasing Ang-(1-7) generation leading to Mas receptor activation...
January 12, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/27889956/red-blood-cell-function-and-dysfunction-redox-regulation-nitric-oxide-metabolism-anemia
#10
Viktoria Kuhn, Lukas Diederich, T C Stevenson Keller Iv, Christian M Kramer, Wiebke Lückstädt, Christina Panknin, Tatsiana Suvorava, Brant Isakson, Malte Kelm, Miriam Margherita Cortese-Krott
SIGNIFICANCE: Recent clinical evidence identified anemia to be correlated with severe complications of cardiovascular disease such as bleeding, thromboembolic events, stroke, hypertension, arrhythmias, as well as inflammation, particularly in elderly patients. The underlying mechanisms of these complications are largely unidentified. Recent Advances: Previously, red blood cells (RBCs) were considered exclusively as transporters of oxygen and nutrients to the tissues. More recent experimental evidence indicates that RBCs are important inter-organ communication systems with additional functions, including participation in control of systemic NO metabolism, redox regulation, blood rheology and viscosity...
November 27, 2016: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/27888262/search-for-an-animal-model-to-investigate-selective-pulmonary-vasodilation
#11
Bodil Petersen, Thilo Busch, Katharina Noreikat, Lorenz Homeister, Ralf Regenthal, Udo X Kaisers
Pulmonary arterial hypertension is a life-threatening disease with a poor prognosis. Oral treatment with vasodilators is often limited by systemic hypotension. Inhalation of vasodilators offers the opportunity for selective pulmonary vasodilation. Testing selective pulmonary vasodilation by inhaled nitric oxide or alternative substances in animal models requires an increased pulmonary vascular tone. The aim of this study was to identify animal models that are suitable for investigating selective pulmonary vasodilation...
November 25, 2016: Laboratory Animals
https://www.readbyqxmd.com/read/27874934/effect-of-nitric-oxide-inhalation-for-the-treatment-of-neonatal-pulmonary-hypertension
#12
H-W Wu, Z-G Li, G Liu, G-Z Lu, H-Y Liang
OBJECTIVE: To investigate the effect of nitric oxide (NO) inhalation for the treatment of neonatal pulmonary hypertension. PATIENTS AND METHODS: Eighty-six patients with neonatal pulmonary hypertension who were treated for the first time Xuzhou Children's Hospital from January 2013 to January 2016 were selected and randomly divided into the observation group and control group, with 43 cases each. Patients in the control group were treated with high-frequency oscillatory ventilation, while those in the observation group were treated with high-frequency oscillatory ventilation combined with inhalational NO therapy...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27822383/neuronal-nitric-oxide-synthase-in-hypertension-an-update
#13
REVIEW
Yin Hua Zhang
Hypertension is a prevalent condition worldwide and is the key risk factor for fatal cardiovascular complications, such as stroke, sudden cardiac death and heart failure. Reduced bioavailability of nitric oxide (NO) in the endothelium is an important precursor for impaired vasodilation and hypertension. In the heart, NO deficiency deteriorates the adverse consequences of pressure-overload and causes cardiac hypertrophy, fibrosis and myocardial infarction which lead to fatal heart failure and sudden cardiac death...
2016: Clinical Hypertension
https://www.readbyqxmd.com/read/27803669/the-role-of-hydrogen-sulfide-in-renal-system
#14
REVIEW
Xu Cao, Jin-Song Bian
Hydrogen sulfide has gained recognition as the third gaseous signaling molecule after nitric oxide and carbon monoxide. This review surveys the emerging role of H2S in mammalian renal system, with emphasis on both renal physiology and diseases. H2S is produced redundantly by four pathways in kidney, indicating the abundance of this gaseous molecule in the organ. In physiological conditions, H2S was found to regulate the excretory function of the kidney possibly by the inhibitory effect on sodium transporters on renal tubular cells...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27802422/different-impact-of-essential-hypertension-on-structural-and-functional-age-related-vascular-changes
#15
Rosa Maria Bruno, Emiliano Duranti, Chiara Ippolito, Cristina Segnani, Nunzia Bernardini, Giulio Di Candio, Massimo Chiarugi, Stefano Taddei, Agostino Virdis
We evaluated whether vascular remodeling is present in physiological aging and whether hypertension accelerates the aging process for vascular function and structure. Small arteries from 42 essential hypertensive patients (HT) and 41 normotensive individuals (NT) were dissected after subcutaneous biopsy. Endothelium-dependent vasodilation (pressurized myograph) was assessed by acetylcholine, repeated under the nitric oxide synthase inhibitor N-nitro-l-arginine methylester or the antioxidant tempol. Structure was evaluated by media-lumen ratio (M/L)...
January 2017: Hypertension
https://www.readbyqxmd.com/read/27802421/modulating-vascular-hemodynamics-with-an-alpha-globin-mimetic-peptide-hb%C3%AE-x
#16
T C Stevenson Keller, Joshua T Butcher, Gilson Brás Broseghini-Filho, Corina Marziano, Leon J DeLalio, Stephen Rogers, Bo Ning, Jennifer N Martin, Sylvia Chechova, Maya Cabot, Xiahong Shu, Angela K Best, Miranda E Good, Alessandra Simão Padilha, Michael Purdy, Mark Yeager, Shayn M Peirce, Song Hu, Allan Doctor, Eugene Barrett, Thu H Le, Linda Columbus, Brant E Isakson
The ability of hemoglobin to scavenge the potent vasodilator nitric oxide (NO) in the blood has been well established as a mechanism of vascular tone homeostasis. In endothelial cells, the alpha chain of hemoglobin (hereafter, alpha globin) and endothelial NO synthase form a macromolecular complex, providing a sink for NO directly adjacent to the production source. We have developed an alpha globin mimetic peptide (named HbαX) that displaces endogenous alpha globin and increases bioavailable NO for vasodilation...
December 2016: Hypertension
https://www.readbyqxmd.com/read/27797281/acute-kidney-function-and-morphology-following-topload-administration-of-recombinant-hemoglobin-solution
#17
Alexandre Fabricio Martucci, Ana Carolina Carvalho Ferreira Abreu Martucci, Pedro Cabrales, Paulo do Nascimento, Marcos Intaglietta, Amy G Tsai, Yara Marcondes Machado Castiglia
There is a 0.138% incidence of adverse reactions related to blood transfusion. Transfusion-related acute lung injury, immunosuppression, fever, pathogen transmission, and hemolytic transfusion reactions are the most common ones. Synthetic oxygen carriers have been developed to deal with blood shortages and for use in the field where stored blood was not available. They were also designed to be pathogen free, including unknown viruses. In this study, we used Male Golden Syrian Hamsters implemented with a dorsal window chamber to determine how infusion of three different, genetically crosslinked recombinant acellular hemoglobin (rHb) solutions with different oxygen affinities and nitric oxide kinetics affect mean arterial pressure (MAP), heart rate (HR), kidney function, and kidney structure...
February 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/27783213/a-prospective-randomized-study-of-inhaled-prostacyclin-versus-nitric-oxide-in-patients-with-residual-pulmonary-hypertension-after-pulmonary-endarterectomy
#18
Shinichiro Abe, Keiichi Ishida, Masahisa Masuda, Hideki Ueda, Hiroki Kohno, Kaoru Matsuura, Yusaku Tamura, Michiko Watanabe, Goro Matsumiya
OBJECTIVES: Pulmonary endarterectomy (PEA) is an effective treatment for chronic thromboembolic pulmonary hypertension (CTEPH), but postoperative residual hypertension leads to in-hospital mortality. Inhaled epoprostenol sodium (PGI2) and NO are administered for pulmonary hypertension after cardiothoracic surgery. This prospective study provides the first comparative evaluation of the effects of inhaled PGI2 and NO on pulmonary hemodynamics, systemic hemodynamics, and gas exchange in patients developing residual pulmonary hypertension after PEA...
October 25, 2016: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27753904/os-02-04-astragaloside-iv-improves-left-ventricular-diastolic-dysfunction-in-hypertensive-mice-by-increasing-the-phosphorylation-of-endothelial-nitric-oxide-synthase
#19
Qiongying Wang, Jeong Euy-Myoung, Hong Liu, Lianzhi Gu, Samuel C Dudley, Jing Yu
OBJECTIVE: The saponin Astragaloside IV (ASI) reportedly enhances endothelial NOS (eNOS) activity by increasing the scavenging of reactive oxygen species (ROS) and NO production. We hypothesized that oxidative stress may decrease eNOS phosphorylation and result in diastolic dysfunction in DOCA-salt mice, which could be reversed by ASI treatment. DESIGN AND METHOD: We used the deoxycorticosterone acetate (DOCA)-salt mouse model. The mice were divided into four groups; SHAM and DOCA control mice received sterile water, SHAM+ASI and DOCA+ASI received ASI treatment via an intraperitoneal injection of 0...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27749691/influence-of-l-citrulline-and-watermelon-supplementation-on-vascular-function-and-exercise-performance
#20
Arturo Figueroa, Alexei Wong, Salvador J Jaime, Joaquin U Gonzales
PURPOSE OF REVIEW: L-Citrulline, either synthetic or in watermelon, may improve vascular function through increased L-arginine bioavailability and nitric oxide synthesis. This article analyses potential vascular benefits of L-citrulline and watermelon supplementation at rest and during exercise. RECENT FINDINGS: There is clear evidence that acute L-citrulline ingestion increases plasma L-arginine, the substrate for endothelial nitric oxide synthesis. However, the subsequent acute improvement in nitric oxide production and mediated vasodilation is inconsistent, which likely explains the inability of acute L-citrulline or watermelon to improve exercise tolerance...
January 2017: Current Opinion in Clinical Nutrition and Metabolic Care
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