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https://www.readbyqxmd.com/read/29793213/end-stage-renal-disease-models-in-the-americas-optimizing-resources-to-achieve-better-health-outcomes
#1
Ramiro E Gilardino, Eduardo González-Pier, Claudia Brabata
End-stage renal disease, the last and most severe stage of chronic kidney disease, represents a major and rising concern for countries in Latin America, driven in large part by aging populations and the near-epidemic rises in diabetes, obesity, and hypertension. This places a great clinical, economic, and social burden on the region's health systems. During the ISPOR 6th Latin America Conference held in Sao Paulo, Brazil, in September 2017, an educational forum debated on value-based decision making in the treatment of end-stage renal disease in Latin America...
May 21, 2018: Value in Health Regional Issues
https://www.readbyqxmd.com/read/29791650/metabolic-syndrome-components-are-associated-with-oxidative-stress-in-overweight-and-obese-patients
#2
Nayara Rampazzo Morelli, Bruna Miglioranza Scavuzzi, Lucia Helena da Silva Miglioranza, Marcell Alysson Batisti Lozovoy, Andréa Name Colado Simão, Isaias Dichi
OBJECTIVE: The aim of this study is to evaluate the influence of the body mass index (BMI) and the metabolic syndrome (MetS) parameters on oxidative and nitrosative stress in overweight and obese subjects. SUBJECTS AND METHODS: Individuals were divided into three groups: the control group (G1, n = 131) with a BMI between 20 and 24.9 kg/m2, the overweight group (G2, n = 120) with a BMI between 25 and 29.9 kg/m2 and the obese group (G3, n = 79) with a BMI ≥ 30 kg/m2...
May 17, 2018: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29789795/clinical-and-experimental-evidences-of-hydrogen-sulfide-involvement-in-lead-induced-hypertension
#3
José Sérgio Possomato-Vieira, Victor Hugo Gonçalves-Rizzi, Regina Aparecida do Nascimento, Rodrigo Roldão Wandekin, Mayara Caldeira-Dias, Jessica Sabbatine Chimini, Maria Luiza Santos da Silva, Carlos A Dias-Junior
Lead- (Pb-) induced hypertension has been shown in humans and experimental animals and cardiovascular effects of hydrogen sulfide (H2 S) have been reported previously. However, no studies examined involvement of H2 S in Pb-induced hypertension. We found increases in diastolic blood pressure and mean blood pressure in Pb-intoxicated humans followed by diminished H2 S plasmatic levels. In order to expand our findings, male Wistar rats were divided into four groups: Saline, Pb, NaHS, and Pb + NaHS. Pb-intoxicated animals received intraperitoneally (i...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29788051/proximal-pulmonary-vascular-stiffness-as-a-prognostic-factor-in-children-with-pulmonary-arterial-hypertension
#4
Richard M Friesen, Michal Schäfer, D Dunbar Ivy, Steven H Abman, Kurt Stenmark, Lorna P Browne, Alex J Barker, Kendall S Hunter, Uyen Truong
Aims: Main pulmonary artery (MPA) stiffness and abnormal flow haemodynamics in pulmonary arterial hypertension (PAH) are strongly associated with elevated right ventricular (RV) afterload and associated with disease severity and poor clinical outcomes in adults with PAH. However, the long-term effects of MPA stiffness on RV function in children with PAH remain poorly understood. This study is the first comprehensive evaluation of MPA stiffness in children with PAH, delineating the mechanistic relationship between flow haemodynamics and MPA stiffness as well as the prognostic ability of these measures regarding clinical outcomes...
May 16, 2018: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29787846/chemical-study-antioxidant-anti-hypertensive-and-cytotoxic-cytoprotective-activities-of-centaurea-cyanus-l-petals-aqueous-extract
#5
Graziela Bragueto Escher, Jânio Sousa Santos, Neiva Deliberali Rosso, Mariza Boscacci Marques, Luciana Azevedo, Mariana Araújo Vieira do Carmo, Heitor Daguer, Luciano Molognoni, Leonardo do Prado-Silva, Anderson Souza Sant'Ana, Marcia Cristina da Silva, Daniel Granato
This study aimed to optimise the experimental conditions of extraction of the phytochemical compounds and functional properties of Centaurea cyanus petals. The following parameters were determined: the chemical composition (LC-ESI-MS/MS), the effects of pH on the stability and antioxidant activity of anthocyanins, the inhibition of lipid peroxidation, antioxidant activity, anti-hemolytic activity, antimicrobial, anti-hypertensive, and cytotoxic/cytoprotective effect, and the measurements of intracellular reactive oxygen species...
May 19, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29786774/computational-fluid-dynamics-modeling-of-the-human-pulmonary-arteries-with-experimental-validation
#6
Alifer D Bordones, Matthew Leroux, Vitaly O Kheyfets, Yu-An Wu, Chia-Yuan Chen, Ender A Finol
Pulmonary hypertension (PH) is a chronic progressive disease characterized by elevated pulmonary arterial pressure, caused by an increase in pulmonary arterial impedance. Computational fluid dynamics (CFD) can be used to identify metrics representative of the stage of PH disease. However, experimental validation of CFD models is often not pursued due to the geometric complexity of the model or uncertainties in the reproduction of the required flow conditions. The goal of this work is to validate experimentally a CFD model of a pulmonary artery phantom using a particle image velocimetry (PIV) technique...
May 21, 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29781735/protein-kinase-d-was-involved-in-vascular-remodeling-in-spontaneously-hypertensive-rats
#7
Jing Geng, Zhuo Zhao, Le Yang, Mingwei Zhang, Xiangjuan Liu
The present study was designed to determine the role of PKD in vascular remodeling (VR) in Spontaneously hypertensive rats (SHRs). Increased SBP, VR and PKD activation were prominent in SHRs. The SBP has a positive correlation with the activation of PKD in SHRs. The ratio of media to lumen (MT/LD), volume fraction of collagen (VFC), hydroxyproline, IL-6, TNF-α and nitrotyrosine content were significantly related to the activated PKD. It may be concluded that PKD plays a central role in VR, and the mechanism may be related to its regulation of hypertrophy, fibrosis, inflammation and oxidative stress...
May 21, 2018: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29781683/tuberculosis-non-communicable-disease-comorbidity-and-multimorbidity-in-public-primary-care-patients-in-south-africa
#8
Karl Peltzer
BACKGROUND:  Little is known about the prevalence of non-communicable disease (NCD) multimorbidity among tuberculosis (TB) patients in Africa.Aim and setting: The aim of this study was to assess the prevalence of NCD multimorbidity, its pattern and impact on adverse health outcomes among patients with TB in public primary care in three selected districts of South Africa. METHODS:  In a cross-sectional survey, new TB and TB retreatment patients were interviewed, and medical records assessed in consecutive sampling within 1 month of anti-TB treatment...
April 11, 2018: African Journal of Primary Health Care & Family Medicine
https://www.readbyqxmd.com/read/29777715/association-between-plasma-ceramides-and-inducible-myocardial-ischemia-in-patients-with-established-or-suspected-coronary-artery-disease-undergoing-myocardial-perfusion-scintigraphy
#9
Alessandro Mantovani, Stefano Bonapace, Gianluigi Lunardi, Matteo Salgarello, Clementina Dugo, Guido Canali, Christopher D Byrne, Stefania Gori, Enrico Barbieri, Giovanni Targher
BACKGROUND: Recent studies have suggested that specific plasma ceramides are independently associated with major adverse cardiovascular events in patients with coronary artery disease (CAD), but it is currently unknown whether plasma ceramide levels are associated with stress-induced reversible myocardial ischemia. METHODS: We measured six previously identified high-risk plasma ceramide molecules [Cer(d18:1/16:0), Cer(d18:1/18:0), Cer(d18:1/20:0), Cer(d18:1/22:0), Cer(d18:1/24:0), and Cer(d18:1/24:1)] in 167 consecutive patients with established or suspected CAD who underwent either exercise or dypiridamole myocardial perfusion scintigraphy (MPS) for various clinical indications...
May 16, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29775962/preterm-birth-and-oxidative-stress-effects-of-acute-physical-exercise-and-hypoxia-physiological-responses
#10
Agnès Martin, Camille Faes, Tadej Debevec, Chantal Rytz, Grégoire Millet, Vincent Pialoux
Preterm birth is a global health issue that can induce lifelong medical sequela. Presently, at least one in ten newborns are born prematurely. At birth, preterm newborns exhibit higher levels of oxidative stress (OS) due to the inability to face the oxygen rich environment in which they are born into. Moreover, their immature respiratory, digestive, immune and antioxidant defense systems, as well as the potential numerous medical interventions following a preterm birth, such as oxygen resuscitation, nutrition, phototherapy and blood transfusion further contribute to high levels of OS...
May 1, 2018: Redox Biology
https://www.readbyqxmd.com/read/29775122/nitration-of-mnsod-in-the-carotid-body-and-adrenal-gland-induced-by-chronic-intermittent-hypoxia
#11
Esteban A Moya, Paulina Arias, Rodrigo Iturriaga
Chronic intermittent hypoxia (CIH), main feature of obstructive sleep apnea, produces nitro-oxidative stress, which contributes to potentiate carotid body (CB) chemosensory discharges and sympathetic-adrenal-axis activity, leading to hypertension. The MnSOD enzymatic activity, a key enzyme on oxidative stress control, is reduced by superoxide-induced nitration. However, the effects of CIH-induced nitration on MnSOD enzymatic activity in the CB and adrenal gland are not known. We studied the effects of CIH on MnSOD protein and immunoreactive (MnSOD-ir) levels in the CB, adrenal gland and superior cervical ganglion (SCG), and on 3-nitrotyrosine (3-NT-ir), CuZnSOD (CuZnSOD-ir), MnSOD nitration, and its enzymatic activity in the CB and adrenal gland from male Sprague-Dawley rats exposed to CIH for 7 days...
May 1, 2018: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/29773606/optimising-experimental-research-in-respiratory-diseases-an-ers-statement
#12
Philippe Bonniaud, Aurélie Fabre, Nelly Frossard, Christophe Guignabert, Mark Inman, Wolfgang M Kuebler, Tania Maes, Wei Shi, Martin Stampfli, Stefan Uhlig, Eric White, Martin Witzenrath, Pierre-Simon Bellaye, Bruno Crestani, Oliver Eickelberg, Heinz Fehrenbach, Andreas Guenther, Gisli Jenkins, Guy Joos, Antoine Magnan, Bernard Maitre, Ulrich A Maus, Petra Reinhold, Juanita H J Vernooy, Luca Richeldi, Martin Kolb
Experimental models are critical for the understanding of lung health and disease and are indispensable for drug development. However, the pathogenetic and clinical relevance of the models is often unclear. Further, the use of animals in biomedical research is controversial from an ethical perspective.The objective of this task force was to issue a statement with research recommendations about lung disease models by facilitating in-depth discussions between respiratory scientists, and to provide an overview of the literature on the available models...
May 2018: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29773412/athlete-s-heart-is-the-morganroth-hypothesis-obsolete
#13
Mark J Haykowsky, T Jake Samuel, Michael D Nelson, Andre La Gerche
In 1975, Morganroth and colleagues reported that the increased left ventricular (LV) mass in highly trained endurance athletes versus nonathletes was primarily due to increased end-diastolic volume while the increased LV mass in resistance trained athletes was solely due to an increased LV wall thickness. Based on the divergent remodelling patterns observed, Morganroth and colleagues hypothesised that the increased "volume" load during endurance exercise may be similar to that which occurs in patients with mitral or aortic regurgitation while the "pressure" load associated with performing a Valsalva manoeuvre (VM) during resistance exercise may mimic the stress imposed on the heart by systemic hypertension or aortic stenosis...
May 1, 2018: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29772777/oxidative-stress-in-preeclampsia-and-placental-diseases
#14
REVIEW
Rajaa Aouache, Louise Biquard, Daniel Vaiman, Francisco Miralles
Preeclampsia is a persistent hypertensive gestational disease characterized by high blood pressure and proteinuria, which presents from the second trimester of pregnancy. At the cellular level, preeclampsia has largely been associated with the release of free radicals by the placenta. Placenta-borne oxidative and nitrosative stresses are even sometimes considered as the major molecular determinants of the maternal disease. In this review, we present the recent literature evaluating free radical production in both normal and pathological placentas (including preeclampsia and other major pregnancy diseases), in humans and animal models...
May 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29770164/aquaporin-membrane-channels-in-oxidative-stress-cell-signaling-and-aging-recent-advances-and-research-trends
#15
REVIEW
Grazia Tamma, Giovanna Valenti, Elena Grossini, Sandra Donnini, Angela Marino, Raul A Marinelli, Giuseppe Calamita
Reactive oxygen species (ROS) are produced as a result of aerobic metabolism and as by-products through numerous physiological and biochemical processes. While ROS-dependent modifications are fundamental in transducing intracellular signals controlling pleiotropic functions, imbalanced ROS can cause oxidative damage, eventually leading to many chronic diseases. Moreover, increased ROS and reduced nitric oxide (NO) bioavailability are main key factors in dysfunctions underlying aging, frailty, hypertension, and atherosclerosis...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29767671/significance-of-an-increase-in-diastolic-blood-pressure-during-a-stress-test-in-terms-of-comorbidities-and-long-term-total-and-cv-mortality
#16
Nóra Sydó, Tibor Sydó, Karina A Gonzalez Carta, Nasir Hussain, Béla Merkely, Joseph G Murphy, Ray W Squires, Francisco Lopez-Jimenez, Thomas G Allison
Background: A decrease in diastolic blood pressure (DBP) with exercise is considered normal, but the significance of an increase in DBP has not been validated. Our aim was to determine the relationship of DBP increasing on a stress test regarding comorbidities and mortality. Methods: Our database was reviewed from 1993-2010 using the first stress test of a patient. Non-Minnesota residence, baseline CV disease, rest DBP <60 or >100 mmHg, and age <30 or ≥80 were exclusion criteria...
May 15, 2018: American Journal of Hypertension
https://www.readbyqxmd.com/read/29764601/adolescent-habitual-caffeine-consumption-and-hemodynamic-reactivity-during-rest-psychosocial-stress-and-recovery
#17
Jack E James, Birna Baldursdottir, Kamilla R Johannsdottir, Heiddis B Valdimarsdottir, Inga Dora Sigfusdottir
OBJECTIVE: Most adolescents regularly consume caffeine. Whereas observational studies have suggested that coffee may be cardio-protective, pharmacological experimentation with adults shows that caffeine at dietary doses increases blood pressure, thereby implicating regular caffeine consumption as a potential source of harm for cardiovascular health. The present study was in response to the dearth of caffeine research among younger consumers. It was hypothesised that compared to the consumption of little or no caffeine, adolescents who habitually consume caffeine have overall higher blood pressure and increased vascular resistance...
July 2018: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/29761247/beneficial-effects-of-fenofibrate-in-pulmonary-hypertension-in-rats
#18
Palak Galhotra, Pankaj Prabhakar, Himanshu Meghwani, Soheb A Mohammed, Sanjay Kumar Banerjee, Sandeep Seth, Milind P Hote, K H Reeta, Ruma Ray, Subir Kumar Maulik
Pulmonary hypertension (PH) is a morbid complication of cardiopulmonary as well as several systemic diseases in humans. It is rapidly progressive and fatal if left untreated. In the present study, we investigated the effect of PPARα agonist fenofibrate (FF) on monocrotaline (MCT)-induced PH in rats. FF, because of its pleiotropic property, could be helpful in reducing inflammation, oxidative stress, and reactive oxygen species. On day 1, MCT (50 mg/kg, s.c.) was given to all the rats in MCT, sildenafil, and FF group except normal control rats...
May 14, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29757573/low-serum-melatonin-levels-are-associated-with-erectile-dysfunction
#19
Aliseydi Bozkurt, Mehmet Karabakan, Binhan Kagan Aktas, Murat Gunay, Ercüment Keskin, Erkan Hirik
OBJECTIVE: Melatonin is a hormone secreted from the pineal gland and has anti-oxidative and anti-inflammatory effects. Oxidative stress is considered as an important factor in the etiology of erectile dysfunction (ED), and in many experimental models, positive results have been obtained with melatonin treatment. This study aimed to measure serum melatonin levels in ED patients and to investigate the possible relationship between ED and melatonin levels. MATERIALS AND METHODS: Sixty-two patients diagnosed with mild, moderate or severe ED according to the five-item International Erectile Function Index (IIEF-5) and 22 healthy individuals were included in the study...
April 30, 2018: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29755221/effect-of-6-months-of-meditation-on-blood-sugar-glycosylated-hemoglobin-and-insulin-levels-in-patients-of-coronary-artery-disease
#20
Shashank Shekhar Sinha, Ajay Kumar Jain, Sanjay Tyagi, S K Gupta, Aarti Sood Mahajan
Background and Objectives: Coronary artery disease (CAD) is the leading cause of morbidity and mortality worldwide. It has been recognized that stress, diabetes, and hypertension are important in etiology and progression of CAD. This study is to evaluate the role of meditation in improving biochemical parameters such as blood glucose, glycosylated hemoglobin, and serum insulin levels in known CAD patients. Material and Methods: Sixty CAD patients are divided into two groups of which one group did meditation and other did not...
May 2018: International Journal of Yoga
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