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Microvascular disease of the heart

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https://www.readbyqxmd.com/read/28088910/sodium-glucose-cotransporter-2-inhibitors-sglt2i-their-role-in-cardiometabolic-risk-management
#1
Niki Katsiki, Dimitri P Mikhailidis, Michael J Theodorakis
BACKGROUND: Sodium-glucose cotransporter 2 inhibitors (SGLT2i) are a novel category of oral antidiabetic drugs that inhibit renal glucose reabsorption and increase renal glucose excretion, thus lowering plasma glucose levels. This unique mechanism of SGLT2i action is insulin independent, thus improving glycemic control without promoting hypoglycemia in the absence of exogenously administered insulin. METHODS: The present narrative review addresses the putative associations between SGLT2i and several cardiovascular (CV) and microvascular risk factors, as well as their effects on cardiac and renal function...
January 13, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28024133/ranolazine-in-treatment-of-stable-angina-in-woman-with-atrial-fibrillation-and-intermittent-left-bundle-branch-block-a-case-report
#2
Natalia Yuriivna Osovska, Natalia Vitaliivna Kuzminova
Stable angina is the most frequent manifestation of ischemic heart disease (IHD) in women as compared to men (65% versus 37%). IHD in women has more favorable clinical course because myocardial infarction develops twice as rare as in men. Coronary angiography of angina patients demonstrates normal coronary arteries more frequently in women than in men. Microvascular angina (MVA) is found to be a rather common form of stable IHD as that particular diagnosis is made later in 20-30% of patients who previously underwent coronary angiography...
December 22, 2016: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/27956408/microvascular-function-contributes-to-the-relation-between-aortic-stiffness-and-cardiovascular-events-the-framingham-heart-study
#3
Leroy L Cooper, Joseph N Palmisano, Emelia J Benjamin, Martin G Larson, Ramachandran S Vasan, Gary F Mitchell, Naomi M Hamburg
BACKGROUND: Arterial dysfunction contributes to cardiovascular disease (CVD) progression and clinical events. Inter-relations of aortic stiffness and vasodilator function with incident CVD remain incompletely studied. METHODS AND RESULTS: We used proportional hazards models to relate individual measures of vascular function to incident CVD in 4547 participants (mean age, 51±11 years; 54% women) in 2 generations of Framingham Heart Study participants. During follow-up (0...
December 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27940390/impact-of-nonadherence-on-complication-risks-and-healthcare-costs-in-patients-newly-diagnosed-with-diabetes
#4
Haruhisa Fukuda, Miki Mizobe
AIMS: To investigate the association between nonadherence to diabetes treatment and the occurrence of diabetes complications. METHODS: Our study retrospectively identified adherence and nonadherence to diabetes treatment in patients during the first year of observation after new diagnoses of type 2 diabetes enrolled in commercial database from 52 health insurers in Japan. Participants were insurance enrollees with type 2 diabetes who received healthcare between 2005 and 2013, and who could be tracked for more than 12months from the initiation of diabetes treatment...
November 19, 2016: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/27932153/a-heartbreaking-renal-transplantation-is-norepinephrine-the-culprit-to-blame
#5
M G Vailas, S Vernadakis, K Kakavia, I Paizis, J Bokos, J Boletis, G Zavos
INTRODUCTION: Takotsubo cardiomyopathy (TCM), also known as "broken heart syndrome," "apical ballooning syndrome," and "stress-induced cardiomyopathy," was first described in Japanese patients in 1990 by Sato et al. TCM is an increasingly recognized syndrome characterized by transient and reversible systolic dysfunction of the apical and middle segments of the left ventricle. This syndrome resembles acute myocardial infarction in the absence of evident coronary artery occlusion. Herein, we present a case of a 51-year-old male who underwent his second deceased-donor renal transplantation for end-stage-renal-disease due to a work-related accident...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27926994/microvessels-of-the-heart-formation-regeneration-and-dysfunction
#6
Ioakim Spyridopoulos, Helen M Arthur
This issue of Microcirculation focusses on the special topic of "microvessels of the heart" and contains five state-of-the-art reviews and one expert article that reflect current efforts to address the major gaps in our understanding of these key microvessels. In the adult heart, most attention until recently (especially among the clinical cardiology community) has been given to the main coronary arteries, which are the culprit vessels in patients with coronary artery disease, including its most serious manifestation, acute myocardial infarction (MI)...
December 7, 2016: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/27921419/-metabolic-syndrome-in-patients-with-diabetes-mellitus-type-1-prevalence-impact-on-morbidity-and-mortality
#7
Jitka Brožová, Daniela Čechurová, Silvie Lacigová
: Aim of this retrospective observational study was to determine the prevalence of metabolic syndrome (MS) in patients with diabetes mellitus type 1 (DM1Z) at baseline (in 2003) and find the parameters that determine the difference between group with (MS+) and without MS (MS-). Did the presence of MS affect morbidity and mortality in the subsequent 10 years? METHODS: 278 patients were enrolled to the study with age average 39 ± 13 years with medical history of diabetes 15...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27908971/13n-ammonia-pet-ct-detection-of-myocardial-perfusion-abnormalities-in-beagle-dogs-after-local-heart-irradiation
#8
Jianbo Song, Rui Yan, Zhifang Wu, Jianguo Li, Min Yan, Xinzhong Hao, Jianzhong Liu, Sijin Li
: To determine the potential value of (13)N-ammonia positron emission tomography (PET)/computed tomography (CT) myocardial perfusion imaging (MPI) for detection of myocardial perfusion changes at early stage induced by radiation damage. METHODS: Thirty-six Beagle dogs were randomly divided into the control (n = 18) or the irradiation groups (n = 18). The irradiation group underwent local irradiation to the left ventricular anterior cardiac wall with a single dose of 20 Gy, whereas the control group received sham irradiation...
December 1, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27855624/the-women-s-heart-insights-into-new-potential-targeted-therapy
#9
Daniele Gianfrilli, Ricardo Pofi, Tiziana Feola, Andrea Lenzi, Elisa Giannetta
Cardiovascular disease represents an increasing cause of death in women. The analysis of cardiovascular risk factors in women has not reached a consensus with respect to a specific and personalized treatment designed in pre-menopausal and post-menopausal phases. Clinically significant cardioprotective and antiremodeling effects were detected in animal and human study exploring chronic inhibition of Phosphodiesterase type 5 (PDE5). The relationship between heart, estrogens and PDE5 inhibitors (PDE5i) remains unclear...
November 18, 2016: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/27837397/from-arb-to-arni-in-cardiovascular-control
#10
REVIEW
Estrellita Uijl, Lodi C W Roksnoer, Ewout J Hoorn, A H Jan Danser
Coexistence of hypertension, diabetes mellitus and chronic kidney disease synergistically aggravates the risk of cardiovascular and renal morbidity and mortality. These high-risk, multi-morbid patient populations benefit less from currently available anti-hypertensive treatment. Simultaneous angiotensin II type 1 receptor blockade and neprilysin inhibition ('ARNI') with valsartan/sacubitril (LCZ696) might potentiate the beneficial effects of renin-angiotensin-aldosterone inhibition by reinforcing its endogenous counterbalance, the natriuretic peptide system...
December 2016: Current Hypertension Reports
https://www.readbyqxmd.com/read/27817854/functional-impairment-of-precerebral-arteries-in-huntington-disease
#11
Jan Kobal, Ksenija Cankar, Janja Pretnar, Marjan Zaletel, Lucijan Kobal, Natasa Teran, Ziva Melik
BACKGROUND: Cardiovascular pathology of Huntington disease (HD) appears to be complex; while microvascular dysfunction seems to appear early, deaths from cardiomyopathy and stroke might occur in the late phase of HD. METHODS: Our study evaluated global risk factors for coronary heart disease (CHD), structure and function of precerebral arteries in 41 HD subjects and 41 matched controls. HD subjects were divided into groups by the United Huntington disease rating scale (presymptomatic-PHD, early-EHD, midstage-MHD and late-LHD)...
January 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/27812962/implications-of-the-empa-reg-trial-for-clinical-care-and-research
#12
REVIEW
Angeliki M Stamatouli, Silvio E Inzucchi
EMPA-REG OUTCOME was a multicenter, randomized placebo-controlled trial that examined the effect of empagliflozin, a sodium-glucose cotransporter 2 (SGLT2) inhibitor in addition to standard of care in patients with type 2 diabetes and established cardiovascular (CV) disease. The primary goal was to assess CV safety, as mandated by the US Food and Drug Administration since 2008 for all new glucose-lowering agents. Secondary goals were to examine the effects of empagliflozin on microvascular outcomes and, in particular, kidney disease...
December 2016: Current Diabetes Reports
https://www.readbyqxmd.com/read/27809867/coronary-microvascular-function-and-myocardial-fibrosis-in-women-with-angina-pectoris-and-no-obstructive-coronary-artery-disease-the-ipower-study
#13
Naja Dam Mygind, Marie Mide Michelsen, Adam Pena, Abbas Ali Qayyum, Daria Frestad, Thomas Emil Christensen, Adam Ali Ghotbi, Nynne Dose, Rebekka Faber, Niels Vejlstrup, Philip Hasbak, Andreas Kjaer, Eva Prescott, Jens Kastrup
BACKGROUND: Even in absence of obstructive coronary artery disease women with angina pectoris have a poor prognosis possibly due to coronary microvascular disease. Coronary microvascular disease can be assessed by transthoracic Doppler echocardiography measuring coronary flow velocity reserve (CFVR) and by positron emission tomography measuring myocardial blood flow reserve (MBFR). Diffuse myocardial fibrosis can be assessed by cardiovascular magnetic resonance (CMR) T1 mapping. We hypothesized that coronary microvascular disease is associated with diffuse myocardial fibrosis...
November 4, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27803933/endothelial-microparticles-act-as-novel-diagnostic-and-therapeutic-biomarkers-of-diabetes-and-its-complications-a-literature-review
#14
REVIEW
Fan Deng, Shuang Wang, Liangqing Zhang
Diabetes mellitus- (DM-) related vascular diseases attract increased attention due to their high morbidity and mortality. The incidence of obesity, atherosclerosis, coronary heart disease, hypertension, and dyslipidemia is significantly higher in DM patients, with an earlier onset and faster progression compared with non-DM patients. DM-related vascular diseases including macrovascular and microvascular complications are characterized by endothelial dysfunction. Therefore, a better understanding of the etiology and mechanisms of endothelial dysfunction is important for the diagnosis and treatment of DM...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27793103/the-sphinx-s-riddle-cardiovascular-involvement-in-autoimmune-rheumatic-disease
#15
REVIEW
Sophie Mavrogeni, George Markousis-Mavrogenis, Genovefa Kolovou
Factors leading to Cardiovascular Disease (CVD) in Autoimmune Rheumatic Diseases (ARD) include: a) atherosclerosis and macro-microvascular coronary artery disease b) pericardial, myocardial and vascular inflammation c) heart valve disease d) heart failure and e) pulmonary hypertension.Cardiology utilizes various non-invasive imaging modalities, such as rest/stress Electrocardiogram (ECG), echocardiography, nuclear imaging and more recently Cardiovascular Magnetic Resonance (CMR) to detect ischemic or inflammatory disease in ARD...
October 28, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27789769/effect-of-sodium-nitrite-on-local-control-of-contracting-skeletal-muscle-microvascular-oxygen-pressure-in-healthy-rats
#16
Trenton D Colburn, Scott K Ferguson, Clark T Holdsworth, Jesse C Craig, Timothy I Musch, David C Poole
: Exercise intolerance characteristic of diseases such as chronic heart failure (CHF) and diabetes is associated with reduced nitric oxide (NO) bioavailability from nitric oxide synthase (NOS), resulting in an impaired microvascular O2 driving pressure (Po2mv; O2 delivery/O2 utilization) and metabolic control. Infusions of the potent NO donor sodium nitroprusside augment NO bioavailability yet decrease mean arterial pressure (MAP) thereby reducing its potential efficacy for patient populations...
January 1, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27767984/the-optimum-hematocrit
#17
Walter H Reinhart
The hematocrit (Hct) determines the oxygen carrying capacity of blood, but also increases blood viscosity and thus flow resistance. From this dual role the concept of an optimum Hct for tissue oxygenation has been derived. Viscometric studies using the ratio Hct/blood viscosity at high shear rate showed an optimum Hct of 50-60% for red blood cell (RBC) suspensions in plasma. For the perfusion of an artificial microvascular network with 5-70μm channels the optimum Hct was 60-70% for high driving pressures. With lower shear rates or driving pressures the optimum Hct shifted towards lower values...
October 21, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27754865/central-hemodynamics-and-arterial-stiffness-in-systemic-sclerosis
#18
Elena Bartoloni, Giacomo Pucci, Francesca Cannarile, Francesca Battista, Alessia Alunno, Marco Giuliani, Giacomo Cafaro, Roberto Gerli, Giuseppe Schillaci
Although microvascular disease is a hallmark of systemic sclerosis (SSc), a higher prevalence of macrovascular disease and a poorer related prognosis have been reported in SSc than in the general population. The simultaneous assessment of prognostically relevant functional properties of larger and smaller arteries, and their effects on central hemodynamics, has never been performed in SSc using the state-of-the-art techniques. Thirty-four women with SSc (aged 61±15 years, disease duration 17±12 years, and blood pressure 123/70±18/11 mm Hg) and 34 healthy women individually matched by age and mean arterial pressure underwent the determination of carotid-femoral (aortic) and carotid-radial (upper limb) pulse wave velocity (a direct measure of arterial stiffness), aortic augmentation (a measure of the contribution of reflected wave to central pulse pressure), and aortobrachial pulse pressure amplification (brachial/aortic pulse pressure) through applanation tonometry (SphygmoCor)...
December 2016: Hypertension
https://www.readbyqxmd.com/read/27753852/ed-04-4-retinal-arteriolar-structure-as-a-maker-of-vascular-health
#19
Tien Wong
The vasculature in the retina can be viewed directly and non-invasively in vivo, offers a unique perspective of the human microvasculature, and therefore the ability to understand early changes, processes, pathways and consequences of hypertension. In the past 15 years, advances in high resolution digital retinal photography and automated or semi-automated computer image software have been applied to measure and quantify a variety of retinal microvascular parameter, including retinal arteriolar and venular caliber, tortuosity, branching patterns and fractal dimensions...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27751310/a-rare-malady-with-a-rarer-complication
#20
Arun Gopi, Placid Sebastian, C D Ramakrishna
Isolated ventricular noncompaction (IVNC) is an unclassified cardiomyopathy characterized by prominent intraventricular trabeculations separated by deep intertrabecular recesses. Although microvascular dysfunction is known, myocardial infarction is rare and usually seen as a consequence of coincidental coronary artery disease. We report the case of a 19-year-old male patient who presented to us with symptoms and signs of heart failure. Echocardiography revealed IVNC with severe left ventricular dysfunction...
September 2016: Indian Heart Journal
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