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Vascular pharmacology

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https://www.readbyqxmd.com/read/28805967/prognostic-value-of-exercise-capacity-among-men-undergoing-pharmacologic-treatment-for-erectile-dysfunction-the-fit-project
#1
Robert V Same, Mahmoud Al Rifai, David I Feldman, Kevin L Billups, Clinton A Brawner, Zeina A Dardari, Jonathan K Ehrman, Steven J Keteyian, Mouaz H Al-Mallah, Michael J Blaha
BACKGROUND: Vascular erectile dysfunction (ED) has been identified as a potentially useful risk factor for predicting future cardiovascular events, particularly in younger men. Because these men typically score more favorably on traditional cardiovascular disease risk assessment tools, there exists a gap in knowledge for how to most appropriately identify those men who would benefit from more aggressive treatments. To date, no studies have examined the impact of fitness on cardiovascular outcomes in men with ED...
August 14, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28803422/salidroside-improved-cerebrovascular-vasodilation-in-streptozotocin-induced-diabetic-rats-through-restoring-the-function-of-bkca-channel-in-smooth-muscle-cells
#2
Yu-Guang Ma, Jun-Wei Wang, Yin-Bin Zhang, Bao-Feng Wang, Zhi-Jun Dai, Man-Jiang Xie, Hua-Feng Kang
Vessel disease is a kind of severe complication in diabetic patients. However, few pharmacologic agents can directly recover diabetic vascular function. Salidroside (SAL), a major ingredient from Rhodiola rosea, has been found to have an obvious hypoglycemic effect and a beneficial protection on vascular function in diabetes. However, whether SAL is a suitable treatment for diabetes has not so far been evaluated and the underlying mechanisms remain unknown. The present work aims to (1) investigate the potential effects of SAL on cerebrovascular relaxation in streptozotocin-induced diabetic rats or when exposed to acute hyperglycemia condition and (2) examine whether function of the BKCa channel is involved in SAL treatment for diabetic vascular relaxation...
August 12, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28799895/arginine-and-aerobic-training-prevent-endothelial-and-metabolic-alterations-in-rats-at-high-risk-for-the-development-of-the-metabolic-syndrome
#3
Renata F Medeiros, Thaiane G Gaique, Thais Bento-Bernardes, Raquel Kindlovits, Tamiris M B Gomes, Nadia Alice V Motta, Fernanda Carla Brito, Caroline Fernandes-Santos, Karen J Oliveira, Antonio Claudio L Nóbrega
Endothelial function is a key mechanism in the development of CVD. Arginine and exercise are important non-pharmacological strategies for mitigating the impact of metabolic changes in the metabolic syndrome, but the effect of their combined administration is unknown. Thus, the aim of this study was to investigate the isolated and combined effects of aerobic training and arginine supplementation on metabolic variables and vascular reactivity in rats at high risk for developing the metabolic syndrome. Wistar rats were divided into two groups: control and fructose (F - water with 10 % fructose)...
July 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28799763/iminothioethers-as-hydrogen-sulfide-donors-from-the-gasotransmitter-release-to-the-vascular-effects
#4
Elisabetta Barresi, Giulia Nesi, Valentina Citi, Eugenia Piragine, Ilaria Piano, Sabrina Taliani, Federico Da Settimo, Simona Rapposelli, Lara Testai, Maria Cristina Breschi, Claudia Gargini, Vincenzo Calderone, Alma Martelli
The gasotransmitter hydrogen sulfide (H2S) is an important tuner of the cardiovascular homeostasis and its deficiency is etiologically associated with a number of cardiovascular diseases. Therefore, the research of original moieties able to release H2S represents a timely issue for drug discovery. In this work, we developed a collection of iminothioethers (ITEs), exhibiting H2S-releasing properties and producing vasorelaxing effects on rat aortic rings. Derivatives 4 and 11, selected as representative of slow and fast rate H2S-donors respectively, produced a complete recovery of the basal coronary flow, reverting the AngII-induced effects in isolated rat hearts...
August 11, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28798681/dl-3-n-butylphthalide-treatment-enhances-hemodynamics-and-ameliorates-memory-deficits-in-rats-with-chronic-cerebral-hypoperfusion
#5
Zhilin Xiong, Weibiao Lu, Lihui Zhu, Ling Zeng, Changzheng Shi, Zhen Jing, Yonghui Xiang, Wenxian Li, Chi Kwan Tsang, Yiwen Ruan, Li'an Huang
Our previous study has revealed that chronic cerebral hypoperfusion (CCH) activates a compensatory vascular mechanism attempting to maintain an optimal cerebral blood flow (CBF). However, this compensation fails to prevent neuronal death and cognitive impairment because neurons die prior to the restoration of normal CBF. Therefore, pharmacological invention may be critical to enhance the CBF for reducing neurodegeneration and memory deficit. Dl-3-n-butylphthalide (NBP) is a compound isolated from the seeds of Chinese celery and has been proven to be able to prevent neuronal loss, reduce inflammation and ameliorate memory deficits in acute ischemic animal models and stroke patients...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28798145/tnf-induces-neutrophil-adhesion-via-formin-dependent-cytoskeletal-reorganization-and-activation-of-%C3%AE-integrin-function
#6
Angélica Aparecida Antoniellis Silveira, Venina Marcela Dominical, Camila Bononi Almeida, Hanan Chweih, Wilson Alves Ferreira, Cristina Pontes Vicente, Fabio Trindade Maranhão Costa, Claudio C Werneck, Fernando Ferreira Costa, Nicola Conran
Although essential for inflammatory responses, leukocyte recruitment to blood vessel walls in response to inflammatory stimuli, such as TNF-α, can contribute to vascular occlusion in inflammatory diseases, including atherosclerosis. We aimed to further characterize the mechanisms by which TNF stimulates adhesive and morphologic alterations in neutrophils. Microfluidic and intravital assays confirmed the potent effect that TNF has on human and murine neutrophil adhesion and recruitment in vitro and in vivo, respectively...
August 10, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28794065/vasa-recta-pericyte-density-is-negatively-associated-with-vascular-congestion-in-the-renal-medulla-following-ischemia-reperfusion-in-rats
#7
G Ryan Crislip, Paul M O'Connor, Qingqing Wei, Jennifer C Sullivan
Recent evidence suggests that a greater density of pericytes in renal cadaveric allografts is associated with better recovery following transplant. The physiological mechanism(s) through which pericyte density may be beneficial is not well understood. The goal of this study was to test the hypothesis that lower medullary pericyte density is associated with greater renal injury following ischemia reperfusion (IR) in a rat model, providing a basis for future studies to better understand pericytes in a pathological environment...
August 9, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28792164/survey-of-assessment-and-management-of-coronary-heart-disease-patients-smart-in-india
#8
Amit Singh, Vikram Singh, Rupesh Ranjan
OBJECTIVE: Survey of Assessment and MAnagement of CoRonary Heart Disease PaTients was undertaken to describe profile and management pattern of adult Acute Coronary Syndrome (ACS) patients from presentation till discharge, in private tertiary care Indian hospitals. MATERIALS AND METHODS: This was an observational, prospective study. Based on standard criteria, patients were diagnosed to have ST-segment elevation myocardial infarction (STEMI), non-ST-segment elevation myocardial infarction (NSTEMI) or unstable angina (UA)...
July 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28791287/bidirectional-mast-cell-eosinophil-interactions-in-inflammatory-disorders-and-cancer
#9
REVIEW
Maria Rosaria Galdiero, Gilda Varricchi, Mansour Seaf, Giancarlo Marone, Francesca Levi-Schaffer, Gianni Marone
Human mast cells (MCs) and eosinophils were first described and named by Paul Ehrlich. These cells have distinct myeloid progenitors and differ morphologically, ultrastructurally, immunologically, biochemically, and pharmacologically. However, MCs and eosinophils play a pivotal role in several allergic disorders. In addition, these cells are involved in autoimmune disorders, cardiovascular diseases, and cancer. MCs are distributed throughout all normal human tissues, whereas eosinophils are present only in gastrointestinal tract, secondary lymphoid tissues, and adipose tissue, thymus, mammary gland, and uterus...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28782217/predicting-drug-interactions-in-addiction-treatment
#10
Catherine J Lucas, Joanne Patel, Jennifer H Martin
It is not uncommon to be treating people with addiction who also have significant other health problems, including heart, renal or liver failure, diabetes and vascular disease. These conditions require regular medications to be taken. This can be a problem for people living with addiction and difficult social circumstances affecting compliance, among other issues. Our perspective provides a summary of general pharmacological factors affecting medicine taking in people with addiction problems, to provide a guide for hospital doctors in this setting...
August 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28776278/expression-of-thyroid-stimulating-hormone-receptors-and-thyroglobulin-in-limbic-regions-in-the-adult-human-brain
#11
Meleshni Naicker, Strinivasen Naidoo
Expression of the human thyroid-specific proteins, thyroid-stimulating hormone receptor (TSH-R) and thyroglobulin (TG) in non-thyroid tissue is well-documented. TSH-R has been identified in the heart, kidney, bone, pituitary, adipose tissue, skin and astrocyte cultures. TG has been identified in the skin, thymus and kidney. However, none of those previous studies had identified TSH-R or TG in specific human brain regions. Previously, a pilot study conducted by our group on normal adult human brain demonstrated TSH-R and TG in cortical neurons and cerebral vasculature, respectively, within various brain areas...
August 3, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28775329/transient-ingrowth-of-lymphatic-vessels-into-the-physiologically-avascular-cornea-regulates-corneal-edema-and-transparency
#12
Deniz Hos, Anne Bukowiecki, Jens Horstmann, Felix Bock, Franziska Bucher, Ludwig M Heindl, Sebastian Siebelmann, Philipp Steven, Reza Dana, Sabine A Eming, Claus Cursiefen
Lymphangiogenesis is essential for fluid homeostasis in vascularized tissues. In the normally avascular cornea, however, pathological lymphangiogenesis mediates diseases like corneal transplant rejection, dry eye disease, and allergy. So far, a physiological role for lymphangiogenesis in a primarily avascular site such as the cornea has not been described. Using a mouse model of perforating corneal injury that causes acute and severe fluid accumulation in the cornea, we show that lymphatics transiently and selectively invade the cornea and regulate the resolution of corneal edema...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28775294/anti-allergic-activity-of-glycyrrhizic-acid-on-ige-mediated-allergic-reaction-by-regulation-of-allergy-related-immune-cells
#13
Shiwen Han, Lu Sun, Feng He, Huilian Che
Glycyrrhizic acid (GA), the major bioactive triterpene glycoside of glycyrrhiza, has been shown to possess a wide range of pharmacological properties, including anti-inflammatory and anti-viral properties. However, few studies have examined the anti-allergic activity and exact mechanism of action of GA. In the present work, the anti-allergic activity and possible mechanisms of action of GA on an immunoglobulin (Ig) E-mediated allergic reaction has been studied using three models of allergic reaction in vivo and in vitro...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28771625/inhibition-of-dipeptidyl-peptidase-4-ameliorates-cardiac-ischemia-and-systolic-dysfunction-by-up-regulating-the-fgf-2-egr-1-pathway
#14
Masayoshi Suda, Ippei Shimizu, Yohko Yoshida, Yuka Hayashi, Ryutaro Ikegami, Goro Katsuumi, Takayuki Wakasugi, Yutaka Yoshida, Shujiro Okuda, Tomoyoshi Soga, Tohru Minamino
Dipeptidyl peptidase 4 inhibitors are used worldwide in the management of diabetes, but their role in the prevention or treatment of cardiovascular disorders has yet to be defined. We found that linagliptin, a DPP-4 inhibitor, suppressed capillary rarefaction in the hearts of mice with dietary obesity. Metabolomic analysis performed with capillary electrophoresis/mass spectrometry (LC-MS/MS) showed that linagliptin promoted favorable metabolic remodeling in cardiac tissue, which was characterized by high levels of citrulline and creatine...
2017: PloS One
https://www.readbyqxmd.com/read/28769973/nitric-oxide-and-hydrogen-peroxide-mediate-wounding-induced-freezing-tolerance-through-modifications-in-photosystem-and-antioxidant-system-in-wheat
#15
Tong Si, Xiao Wang, Lin Wu, Chunzhao Zhao, Lini Zhang, Mei Huang, Jian Cai, Qin Zhou, Tingbo Dai, Jian-Kang Zhu, Dong Jiang
Mechanical wounding is a common stress caused by herbivores or manual and natural manipulations, whereas its roles in acclimation response to a wide spectrum of abiotic stresses remain unclear. The present work showed that local mechanical wounding enhanced freezing tolerance in untreated systemic leaves of wheat plants (Triticum aestivum L.), and meanwhile the signal molecules hydrogen peroxide (H2O2) and nitric oxide (NO) were accumulated systemically. Pharmacological study showed that wounding-induced NO synthesis was substantially arrested by pretreatment with scavengers of reactive oxygen species and an inhibitor of NADPH oxidase (respiratory burst oxidase homolog, RBOH)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28769073/compensatory-vasodilator-mechanisms-in-the-ophthalmic-artery-of-endothelial-nitric-oxide-synthase-gene-knockout-mice
#16
Caroline Manicam, Natalja Ginter, Huige Li, Ning Xia, Evgeny Goloborodko, Jenia Kouchek Zadeh, Aytan Musayeva, Norbert Pfeiffer, Adrian Gericke
Nitric oxide (NO) generated by endothelial nitric oxide synthase (eNOS) plays an important role in the maintenance of ocular vascular homeostasis. Therefore, perturbations in vascular NO synthesis have been implicated in the pathogenesis of several ocular diseases. We recently reported that eNOS contributes significantly to vasodilation of the mouse ophthalmic artery. Interestingly, dilatory responses were also retained in eNOS gene-deficient mice (eNOS-/-), indicating inherent endothelial adaptive mechanism(s) that act as back-up systems in chronic absence of eNOS to preserve vasorelaxation...
August 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28761800/pancreatic-kaposiform-hemangioendothelioma-not-responding-to-sirolimus
#17
Paloma Junco Triana, Mariela Dore, Vanesa Cerezo Nuñez, Javier Gomez Jimenez, Miriam Ferrero Miguel, Mercedes González Díaz, Joan Novo Ricardo, Ane Andres, Manuel Lopez Santamaria, Juan Carlos Lopez-Gutierrez
Background  Kaposiform hemangioendothelioma (KHE) is a vascular tumor frequently associated with Kasabach-Merritt phenomenon (KMP), characterized by severe thrombocytopenia and consumptive coagulopathy. Visceral involvement in KHE is rare. In our recent experience, sirolimus has shown to be an effective treatment in cutaneous KHE, becoming indeed the treatment of choice in KMP. We report a case of pancreatic KHE associated with KMP and refractory to sirolimus. Case Report  A 4-month-old infant is referred for obstructive jaundice (10 mg/dL conjugated bilirubin) secondary to vascular pancreatic tumor...
January 2017: European Journal of Pediatric Surgery Reports
https://www.readbyqxmd.com/read/28760220/weight-and-type-2-diabetes-new-recommendations
#18
Ricardo Gómez Huelgas
Most patients with type 2 diabetes have excess adiposity. There is wide consensus that adequate treatment of type 2 diabetes requires a simultaneous approach to overweight/obesity and the remaining cardiovascular risk factors. Non-pharmacological interventions (diet, exercise) represent the cornerstone of the treatment of patients with type 2 diabetes. Weight loss through lifestyle modification has shown clear benefits in these patients, requiring an individualised and multidisciplinary approach with structured programmes endowed with specific resources...
November 2016: Medicina Clínica
https://www.readbyqxmd.com/read/28758988/beneficial-effects-of-galectin-3-blockade-in-vascular-and-aortic-valve-alterations-in-an-experimental-pressure-overload-model
#19
Jaime Ibarrola, Ernesto Martínez-Martínez, J Rafael Sádaba, Vanessa Arrieta, Amaia García-Peña, Virginia Álvarez, Amaya Fernández-Celis, Alicia Gainza, Patrick Rossignol, Victoria Cachofeiro Ramos, Natalia López-Andrés
Galectin-3 (Gal-3) is involved in cardiovascular fibrosis and aortic valve (AV) calcification. We hypothesized that Gal-3 pharmacological inhibition with modified citrus pectin (MCP) could reduce aortic and AV remodeling in normotensive rats with pressure overload (PO). Six weeks after aortic constriction, vascular Gal-3 expression was up-regulated in male Wistar rats. Gal-3 overexpression was accompanied by an increase in the aortic media layer thickness, enhanced total collagen, and augmented expression of fibrotic mediators...
July 31, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28757154/the-central-serotonin2b-receptor-as-a-new-pharmacological-target-for-the-treatment-of-dopamine-related-neuropsychiatric-disorders-rationale-and-current-status-of-research
#20
REVIEW
Céline Devroye, Adeline Cathala, Pier Vincenzo Piazza, Umberto Spampinato
The serotonin2B receptor (5-HT2BR), which was first cloned and characterized in the rat stomach fundus, is the most recent addition to the 5-HT2R family. While its involvement in the regulation of gastrointestinal, vascular, pulmonary and cardiac physiology has been widely investigated, its functional role within the central nervous system (CNS) has received much less attention. Nevertheless, when considering the data available in the literature with regards to the regulatory control exerted by the central 5-HT2BR on dopamine (DA) and serotonin (5-HT) neuron activity, a very interesting picture emerges and highlights the key role of these receptors for future therapeutic strategies of DA-related neuropsychiatric disorders...
July 27, 2017: Pharmacology & Therapeutics
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