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https://www.readbyqxmd.com/read/28922660/mitochondrial-dysfunction-and-altered-renal-metabolism-in-dahl-salt-sensitive-rats
#1
Zhengjun Wang, Qiong Sun, Na Sun, Mingyu Liang, Zhongmin Tian
BACKGROUND/AIMS: The kidney plays a critical role in the control of blood pressure and its elevation in salt-induced hypertension. Mitochondrial dysfunction, especially in energy metabolism, has been associated with hypertension. Here, we aimed to investigate mitochondrial function and metabolic features in renal mitochondria of Dahl salt-sensitive (SS) rats to gain further insight into the relationship between mitochondrial metabolism and predisposition to hypertension. METHODS: In this study, SS rats fed low-salt (LS) or high-salt (HS) diets were used to investigate mitochondrial function and metabolism including mitochondrial enzyme activities, pyridine nucleotides, metabolites, and oxidative stress by biochemical analysis and gas chromatography-mass spectrometer (GC-MS)...
September 19, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/28920709/comparison-of-oxidative-stress-biomarkers-in-hypertensive-patients-with-or-without-hyperhomocysteinemia
#2
Gang Guo, Wenjiang Sun, Guanghui Liu, Huan Zheng, Jiasheng Zhao
Hyperhomocysteinemia is an independent risk factor for cardiovascular impairment in hypertension. Oxidative stress is important in the molecular mechanisms associated with hypertension, but there are few studies focusing on the comparison of oxidative stress biomarkers in hypertensive patients with or without hyperhomocysteinemia. The study included 50 newly diagnosed hypertensive patients with hyperhomocysteinemia, 50 newly diagnosed hypertensive patients without hyperhomocysteinemia, and 50 age-matched healthy controls...
September 18, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28919912/the-isfahan-comprehensive-elderly-study-objectives-research-design-methodology-and-preliminary-results
#3
Zahra Heidari, Awat Feizi
BACKGROUND: This paper presents the objectives, research design, methodology, and primary findings of the Isfahan Comprehensive Elderly Study (ICES). MATERIALS AND METHODS: In this cross-sectional study, 603 elderly persons (aged 60 and over) were selected by multistage cluster sampling method from Isfahan, Iran, in 2016 comprehensive questionnaires along with a detailed interview were used to collect information on personal, family, socioeconomic, health and social services characteristics, life styles, physical illnesses and chronic diseases, mental, emotional and cognition disorders, quality of life, disabilities, sleep quality, social supports, life satisfaction, self-efficacy, and of participants...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/28915536/protective-effect-of-the-standardized-extract-of-ginkgo-biloba-egb761-against-hypertension-with-hypercholesterolemia-induced-renal-injury-in-rats-insights-in-the-underlying-mechanisms
#4
Ahmed O Abdel-Zaher, Hanan S M Farghaly, Abeer E M El-Refaiy, Ahmed M Abd-Eldayem
The potential protective role of the standardized leaf extract of ginkgo biloba (EGb761) on hypertension with hypercholesterolemia-induced renal injury was investigated in rats. Hypertension was induced by L-N(G)-nitroarginine methyl ester (L-NAME) and hypercholesterolemia was induced by feeding rats with a diet containing 1% cholesterol. In these animals repeated treatment with EGb761 produced a progressive reduction in the systolic, diastolic and mean arterial blood pressure (BP). EGb761 increased the progressive reduction in the systolic, diastolic and mean arterial BP induced by repeated administration of losartan with simvastatin...
September 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28914782/the-future-challenge-of-reactive-oxygen-species-ros-in-hypertension-from-bench-to-bed-side
#5
REVIEW
Gabriele Togliatto, Giusy Lombardo, Maria Felice Brizzi
Reactive oxygen species (ROS) act as signaling molecules that control physiological processes, including cell adaptation to stress. Redox signaling via ROS has quite recently become the focus of much attention in numerous pathological contexts, including neurodegenerative diseases, kidney and cardiovascular disease. Imbalance in ROS formation and degradation has also been implicated in essential hypertension. Essential hypertension is characterized by multiple genetic and environmental factors which do not completely explain its associated risk factors...
September 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28914194/diabetic-retinopathy-recent-updates-on-different-biomarkers-and-some-therapeutic-agents
#6
Amjad Ali Khan, Arshad Husain Rahmani, Yousef Homood Aldebasi
BACKGROUND: Diabetic Retinopathy is a leading cause of sight-threatening complication, which occurs due to a number of physiological and metabolic abnormalities during later stages of diabetes. Many of these abnormal changes are consistent with altered oxidative stress, inflammation, genetic set up, advanced glycation end products, and hematological changes. So the altered levels of different biomolecules related to these changes serve as important biomarkers to assess better evaluation and early treatment of this disease...
September 15, 2017: Current Diabetes Reviews
https://www.readbyqxmd.com/read/28914109/stem-cell-therapy-for-the-systemic-right-ventricle
#7
Ming-Sing Si, Richard G Ohye
In specific forms of congenital heart defects and pulmonary hypertension, the right ventricle (RV) is exposed to systemic levels of pressure overload. The RV is prone to failure in these patients because of its vulnerability to chronic pressure overload. As patients with a systemic RV reach adulthood, an emerging epidemic of RV failure has become evident. Medical therapies proven for LV failure are ineffective in treating RV failure. Areas covered: In this review, the pathophysiology of the failing RV under pressure overload is discussed, with specific emphasis on the pivotal roles of angiogenesis and oxidative stress...
September 15, 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/28913687/non-atherosclerotic-vascular-disease-in-women
#8
REVIEW
Lee Joseph, Esther S H Kim
Takayasu arteritis, fibromuscular dysplasia (FMD), spontaneous arterial dissection, Raynaud's phenomenon, and chilblains are vascular conditions that are associated with an increased predisposition in women and are often underdiagnosed. Takayasu arteritis has an incidence rate of 2.6 cases per million individuals per year in the USA and predominantly affects women of childbearing age. HLA-B5 genetic locus is linked with Takayasu arteritis susceptibility. Methods to determine active disease are limiting; currently utilized clinical and imaging findings and laboratory tests are of limited value for this purpose...
September 14, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28913683/an-evidence-map-of-the-women-veterans-health-research-literature-2008-2015
#9
Elisheva R Danan, Erin E Krebs, Kristine Ensrud, Eva Koeller, Roderick MacDonald, Tina Velasquez, Nancy Greer, Timothy J Wilt
BACKGROUND: Women comprise a growing proportion of Veterans seeking care at Veterans Affairs (VA) healthcare facilities. VA initiatives have accelerated changes in services for female Veterans, yet the corresponding literature has not been systematically reviewed since 2008. In 2015, VA Women's Health Services and the VA Women's Health Research Network requested an updated literature review to facilitate policy and research planning. METHODS: The Minneapolis VA Evidence-based Synthesis Program performed a systematic search of research related to female Veterans' health published from 2008 through 2015...
September 14, 2017: Journal of General Internal Medicine
https://www.readbyqxmd.com/read/28912362/sympathetic-function-during-whole-body-cooling-is-altered-in-hypertensive-adults
#10
Jody L Greaney, W Larry Kenney, Lacy M Alexander
During moderate cold exposure, cardiovascular-related morbidity and mortality increase disproportionately in hypertensive adults (HTN); however, the mechanisms underlying this association are not well defined. We hypothesized that whole-body cold stress would evoke exaggerated increases in blood pressure (BP) and muscle sympathetic nerve activity (MSNA) in HTN compared to normotensive adults (NTN) and that sympathetic baroreflex function would be altered during cooling in HTN. MSNA (peroneal microneurography) and beat-to-beat BP (Finometer) were measured continuously in 10 NTN (6M/4W; age 53±3 yrs; resting BP 125±3/79±1 mmHg) and 13 HTN (7M/6W; age 58±2 yrs; resting BP 146±5/88±2 mmHg) during whole-body cooling-induced reductions in mean skin temperature (Tsk; water-perfused suit) from 34...
September 14, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28911936/exercise-training-in-patients-with-pulmonary-and-systemic-hypertension-a-unique-therapy-for-two-different-diseases
#11
REVIEW
Massimo Leggio, Augusto Fusco, Giorgio Limongelli, Luca Sgorbini
Pulmonary hypertension is a potentially life-threatening condition. Given its evolving definition, the incidence and prevalence of the disease is difficult to define, but registries suggest an increased global awareness. The management of patients with pulmonary arterial hypertension is highly specialised and requires multi-disciplinary input from a range of healthcare professionals, including cardiologists, respiratory physicians, rheumatologists, rehabilitation physicians and cardio-pulmonary physiotherapists...
September 11, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28911613/proteomic-changes-associated-with-metabolic-syndrome-in-a-fructose-fed-rat-model
#12
Cheng-Chu Hsieh, Chen-Chung Liao, Yi-Chun Liao, Lucy Sun Hwang, Liang-Yi Wu, Shu-Chen Hsieh
Metabolic syndrome (MetS), characterized by a constellation of disorders such as hyperglycemia, insulin resistance, and hypertension, is becoming a major global public health problem. Fructose consumption has increased dramatically over the past several decades and with it the incidence of MetS. However, its molecular mechanisms remain to be explored. In this study, we used male Sprague-Dawley (SD) rats to study the pathological mechanism of fructose induced MetS. The SD rats were fed a 60% high-fructose diet for 16 weeks to induce MetS...
October 2016: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28910144/ask1-inhibition-halts-disease-progression-in-preclinical-models-of-pulmonary-arterial-hypertension
#13
Grant R Budas, Mario Boehm, Baktybek Kojonazarov, Gayathri Viswanathan, Xia Tian, Swathi Veeroju, Tatyana Novoyatleva, Friedrich Grimminger, Ford Hinojosa-Kirschenbaum, Hossein A Ghofrani, Norbert Weissmann, Werner Seeger, John T Liles, Ralph T Schermuly
RATIONALE Progression of pulmonary arterial hypertension (PAH) is associated with pathologic remodeling of the pulmonary vasculature and the right ventricle (RV). Oxidative stress drives the remodeling process through activation of mitogenactivated protein kinases (MAPKs) which stimulate apoptosis, inflammation and fibrosis. OBJECTIVES We investigated whether pharmacological inhibition of the redoxsensitive apical MAPK Apoptosis Signal-Regulating Kinase 1 (ASK1) can halt the progression of pulmonary vascular and RV remodeling...
September 14, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28906388/retrospective-cause-analysis-of-troponin-i-elevation-in-non-cad-patients-special-emphasis-on-sepsis
#14
Chien-Wen Yang, Huijun Li, Lisa Thomas, Manuel Ramos, Po-Hong Liu, Thomas Roe, Ravinder Valadri, Michael C Kiel, Vincent Yi-Fong Su, Qi Shi
BACKGROUND: Troponin I is one of the most commonly tested biochemical markers in the emergency room (ER) and in the hospital setting. Besides coronary artery disease (CAD), demand ischemia with underlying tachycardia, anemia, hypertensive emergency, congestive heart failure, kidney disease, sepsis, and pulmonary embolism have also been reported to cause troponin I elevations. Few reports have excluded patients with CAD, and no study has summarized the proportion of these factors relative to an increased troponin I level...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28904075/association-between-living-in-food-deserts-and-cardiovascular-risk
#15
Heval M Kelli, Muhammad Hammadah, Hina Ahmed, Yi-An Ko, Matthew Topel, Ayman Samman-Tahhan, Mossab Awad, Keyur Patel, Kareem Mohammed, Laurence S Sperling, Priscilla Pemu, Viola Vaccarino, Tene Lewis, Herman Taylor, Greg Martin, Gary H Gibbons, Arshed A Quyyumi
BACKGROUND: Food deserts (FD), neighborhoods defined as low-income areas with low access to healthy food, are a public health concern. We evaluated the impact of living in FD on cardiovascular risk factors and subclinical cardiovascular disease (CVD) with the hypothesis that people living in FD will have an unfavorable CVD risk profile. We further assessed whether the impact of FD on these measures is driven by area income, individual household income, or area access to healthy food. METHODS AND RESULTS: We studied 1421 subjects residing in the Atlanta metropolitan area who participated in the META-Health study (Morehouse and Emory Team up to Eliminate Health Disparities; n=712) and the Predictive Health study (n=709)...
September 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28902900/possible-clinical-effects-of-molecular-hydrogen-h2-delivery-during-hemodialysis-in-chronic-dialysis-patients-interim-analysis-in-a-12-month-observation
#16
Masaaki Nakayama, Noritomo Itami, Hodaka Suzuki, Hiromi Hamada, Naoyuki Osaka, Ryo Yamamoto, Kazumasa Tsunoda, Hirofumi Nakano, Kimio Watanabe, Wan-Jun Zhu, Yukio Maruyama, Hiroyuki Terawaki, Shigeru Kabayama, Ryoichi Nakazawa, Mariko Miyazaki, Sadayoshi Ito
BACKGROUND AND AIM: It is supposed that enhanced oxidative stress and inflammation are involved with the poor clinical outcomes in patients on chronic dialysis treatment. Recent studies have shown that molecular hydrogen (H2) is biologically active as an anti-inflammatory agent. Thus, we developed a novel hemodialysis (E-HD) system which delivers H2 (30 to 80 ppb)-enriched dialysis solution, to conduct a prospective observational study (UMIN000004857) in order to compare the long-term outcomes between E-HD and conventional-HD (C-HD) in Japan...
2017: PloS One
https://www.readbyqxmd.com/read/28902380/-organ-interactions-heart-and-kidney
#17
Daniel Salleck, Stefan John
The interactions between heart and kidney are various and of clinical relevance. Worsening of one organ often influences the function of the other. With NYHA and KDIGO we have classification systems for heart and kidney failure and those should be used for cardiorenal systems as well. Furthermore there is a useful classification system for cardiorenal syndromes itself. Cardiorenal syndrome is a complex illness which should be treated by interdisciplinary medical teams. A key roll in pathophysiology is the renin-angiotensin-aldosteron-system (RAAS)...
September 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28899895/biomechanical-and-hemodynamic-measures-of-right-ventricular-diastolic-function-translating-tissue-biomechanics-to-clinical-relevance
#18
Sae Jang, Rebecca R Vanderpool, Reza Avazmohammadi, Eugene Lapshin, Timothy N Bachman, Michael Sacks, Marc A Simon
BACKGROUND: Right ventricular (RV) diastolic function has been associated with outcomes for patients with pulmonary hypertension; however, the relationship between biomechanics and hemodynamics in the right ventricle has not been studied. METHODS AND RESULTS: Rat models of RV pressure overload were obtained via pulmonary artery banding (PAB; control, n=7; PAB, n=5). At 3 weeks after banding, RV hemodynamics were measured using a conductance catheter. Biaxial mechanical properties of the RV free wall myocardium were obtained to extrapolate longitudinal and circumferential elastic modulus in low and high strain regions (E1 and E2, respectively)...
September 12, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28895507/functional-impact-of-exercise-pulmonary-hypertension-in-patients-with-borderline-resting-pulmonary-arterial-pressure
#19
Rudolf K F Oliveira, Mariana Faria-Urbina, Bradley A Maron, Mario Santos, Aaron B Waxman, David M Systrom
Borderline resting mean pulmonary arterial pressure (mPAP) is associated with adverse outcomes and affects the exercise pulmonary vascular response. However, the pathophysiological mechanisms underlying exertional intolerance in borderline mPAP remain incompletely characterized. In the current study, we sought to evaluate the prevalence and functional impact of exercise pulmonary hypertension (ePH) across a spectrum of resting mPAP's in consecutive patients with contemporary resting right heart catheterization (RHC) and invasive cardiopulmonary exercise testing...
July 2017: Pulmonary Circulation
https://www.readbyqxmd.com/read/28893092/salvianolic-acid-a-a-component-of-salvia-miltiorrhiza-attenuates-endothelial-mesenchymal-transition-of-hpaecs-induced-by-hypoxia
#20
Tianyi Yuan, Yucai Chen, Huifang Zhang, Lianhua Fang, Guanhua Du
Salvianolic acid A (SAA), a polyphenols acid, is a bioactive ingredient from a traditional Chinese medicine called Dan shen (Salvia Miltiorrhiza Bunge). According to previous studies, it was shown to have various effects such as anti-oxidative stress, antidiabetic complications and antipulmonary hypertension. This study aimed to investigate the effect of SAA on pulmonary arterial endothelial-mesenchymal transition (EndoMT) induced by hypoxia and the underlying mechanisms. Primary cultured human pulmonary arterial endothelial cells (HPAECs) were exposed to 1% O2 for 48[Formula: see text]h with or without SAA treatment...
2017: American Journal of Chinese Medicine
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