Search results for "Vascular system"
showing 10 items of 4322 documents
Effects of empagliflozin on CA125 trajectory in patients with chronic congestive heart failure
2021
INTRODUCTION: We aimed to evaluate the trajectory of two surrogates of fluid overload -antigen carbohydrate 125 (CA125) and amino-terminal pro-brain natriuretic peptide (NT-proBNP)- after the addition of oral empagliflozin to usual care in a cohort of patients with chronic heart failure (CHF) and type 2 diabetes (T2D). METHODS AND RESULTS: From October 2015 to February 2019, 60 ambulatory patients with CHF and T2D were retrospectively included. The primary endpoint was to assess the longitudinal trajectory of plasma levels of CA125 and NT-proBNP after empagliflozin initiation. Changes in quantitative variables were evaluated using linear mixed regression. Median CA125 and NT-proBNP at basel…
Carbohydrate Antigen-125–Guided Therapy in Acute Heart Failure
2016
Abstract Objectives This study sought to evaluate the prognostic effect of carbohydrate antigen-125 (CA125)–guided therapy (CA125 strategy) versus standard of care (SOC) after a hospitalization for acute heart failure (AHF). Background CA125 has emerged as a surrogate of fluid overload and inflammatory status in AHF. After an episode of AHF admission, elevated values of this marker at baseline as well as its longitudinal profile relate to adverse outcomes, making it a potential tool for treatment guiding. Methods In a prospective multicenter randomized trial, 380 patients discharged for AHF and high CA125 were randomly assigned to the CA125 strategy (n = 187) or SOC (n = 193). The aim in th…
Increased Connexin 43 Expression as a Potential Mediator of the Neuroprotective Activity of the Corticotropin-Releasing Hormone
2009
CRH is a major central stress mediator, but also a potent neuroprotective effector. The mechanisms by which CRH mediates its neuroprotective actions are largely unknown. Here, we describe that the gap junction molecule connexin43 (Cx43) mediates neuroprotective effects of CRH toward experimentally induced oxidative stress. An enhanced gap junction communication has been reported to contribute to neuroprotection after neurotoxic insults. We show that CRH treatment up-regulates Cx43 expression and gap junctional communication in a CRH receptor-dependent manner in IMR32 neuroblastoma cells, primary astrocytes, and organotypic hippocampal slice cultures. MAPKs and protein kinase A-cAMP response…
Atrial natriuretic peptide secretion during development of the rat supraoptic nucleus
2009
Since a relationship between atrial natriuretic peptide and oxytocin was recently demonstrated in the heart (Gutkowska et al., 1997), the aim of this study was to determine whether a relationship between the two peptides is present also in the rat hypothalamus. For this purpose, we measured ANP-ontogeny in the rat hypothalamus immunohistochemically and compared it with oxytocin-ontogeny which we previously studied. The results showed that the ANP-peptide and mRNA-ANP start at the 18th day of the fetal life. Our earlier data for oxytocin in the rat hypothalamus showed that only mRNA-oxytocin appeared the 18th day of foetal life (Farina Lipari et al., 2001); thus, at the 18th day of foetal li…
No Effects of Acute Psychosocial Stress on Working Memory in Older People With Type 2 Diabetes
2021
Type 2 diabetes (T2D) has been considered a public health threat due to its growing prevalence, particularly in the older population. It is important to know the effects of psychosocial stress and its potential consequences for some basic cognitive processes that are important in daily life. Currently, there is very little information about how people with T2D face acute psychosocial stressors, and even less about how their response affects working memory (WM), which is essential for their functionality and independence. Our aim was to characterize the response to an acute laboratory psychosocial stressor and its effects on WM in older people with T2D. Fifty participants with T2D from 52 to…
Endothelial Bmx tyrosine kinase activity is essential for myocardial hypertrophy and remodeling
2015
Cardiac hypertrophy accompanies many forms of heart disease, including ischemic disease, hypertension, heart failure, and valvular disease, and it is a strong predictor of increased cardiovascular morbidity and mortality. Deletion of bone marrow kinase in chromosome X (Bmx), an arterial nonreceptor tyrosine kinase, has been shown to inhibit cardiac hypertrophy in mice. This finding raised the possibility of therapeutic use of Bmx tyrosine kinase inhibitors, which we have addressed here by analyzing cardiac hypertrophy in gene-targeted mice deficient in Bmx tyrosine kinase activity. We found that angiotensin II (Ang II)-induced cardiac hypertrophy is significantly reduced in mice deficient i…
Myogenic effects enhance norepinephrine constriction: Inhibition by nitric oxide and felodipine
1998
Myogenic effects enhance norepinephrine constriction: Inhibition by nitric oxide and felodipine. Myogenic, pressure-induced vasoconstriction may amplify the effects of circulating vasoconstrictors. Through intravital microscopy in cremaster arterioles (31 to 115 μm diameter), the relative contribution of myogenic responses (MR) to norepinephrine (NE)-induced constriction and the inhibitor potency of nitric oxide (NO) or a Ca2+ entry blocker (CEB), felodipine (F), were examined. In 24 anesthetized hamsters, a vessel occluder was placed around the aorta to control cremaster vessel inflow pressure (IP). NE infusion increased blood pressure (by 50 ± 2mm Hg) and induced significant constriction …
Endovascular mechanical thrombectomy of the inferior vena cava and iliac veins with the use of Aspirex®S device in a paediatric patient
2017
Phlegmasia cerulea dolens, which is the most severe clinical presentation of deep venous thrombosis and results from an almost complete occlusion of the major and collateral venous outflow routes from the extremity, is very rarely seen in children. Here we describe the treatment of an 11-year-old boy with Down syndrome who presented with thrombotic occlusion of the inferior vena cava and both iliac veins. We present a step-by-step technique of endovascular mechanical thrombectomy of these veins with the use of the Aspirex®S thrombectomy device. Endovascular treatment was followed by local intravenous thrombolysis. Because of recurrent thrombosis, which occurred 4 days later, endovascular th…
Experiences of family physicians after a CME ultrasound course
2017
Background. Ultrasonography is an inexpensive, safe, noninvasive tool for obtaining diagnoses without performing further imaging tests, and for the timely referral of patients to further diagnosis or specialist care. Objectives . To determine which ultrasound tests are most often performed by family physicians, and what factors contribute to their use of ultrasound imaging. Material and methods . This survey-based study using the authors’ questionnaire was conducted in March 2016 among 81 primary care physicians who had completed weekend courses on ultrasound abdominal cavity imaging. Results . Family physicians most often took ultrasounds of the abdominal cavity (35/50; 70%) and thyroid gl…
Viridans streptococcal infective endocarditis associated with fixed orthodontic appliance managed surgically by mitral valve plasty
2018
Abstract Rationale: Streptococcus viridans, a heterogeneous group of alpha-hemolytic streptococci, is part of the normal flora of the mouth, usually responsible for dental caries (Streptococcus mutans, Streptococcus sanguinis), and pericoronitis, as well as for subacute infective endocarditis. They are responsible for 40-60% of the endocarditis cases occurring on the normal valves, especially in male patients and over 45 years of age. A change in the bacterial flora of the oral cavity is taking part after orthodontic fixed appliances are introduced into the oral cavity, change that is associated with an increased concentration of the acidogenic bacteria. Bacteraemia is the consequence of or…