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vasomotor function

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https://www.readbyqxmd.com/read/28640160/vasomotor-symptoms-in-women-in-asia-appear-comparable-with-women-in-western-countries-a-systematic-review
#1
Rakibul M Islam, Robin J Bell, Farwa Rizvi, Susan R Davis
OBJECTIVE: There is a belief that menopausal symptoms, particularly vasomotor symptoms (VMS), are a Western phenomena and less likely to be experienced in women in Asian countries. This systematic review of the literature was undertaken to evaluate the prevalence of VMS in Asian countries. METHODS: MEDLINE, EMBASE, PsycINFO, CINAHL, SCOPUS, and Google scholar were searched systematically for relevant population-based prevalence studies published between 1981 and 2016...
June 19, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28635124/regular-aerobic-exercise-reduces-endothelin-1-mediated-vasoconstrictor-tone-in-overweight-and-obese-adults
#2
Caitlin A Dow, Brian L Stauffer, Danielle L Brunjes, Jared J Greiner, Christopher A DeSouza
Endothelin (ET)-1-mediated vasoconstrictor tone is elevated in overweight and obese adults, contributing to vasomotor dysfunction and increased cardiovascular disease risk. While the effects of habitual aerobic exercise on endothelium-dependent vasodilation in overweight/obese adults has been studied, little is known regarding ET-1 vasoconstriction. Accordingly, the aims of the present study were to determine: (1) if regular aerobic exercise training reduces ET-1-mediated vasoconstrictor tone in overweight and obese adults; and, if so (2) whether the reduction in ET-1 vasoconstriction contributes to exercise-induced improvement in endothelium-dependent vasodilation in this population...
June 20, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28612516/autonomic-nervous-system-function-in-adolescent-migraineurs
#3
Seiji Yoshida, Hidetaka Tanaka, Midori Mizutani, Ryota Nakao, Naoyuki Okamoto, Mitsugu Kajiura, Yukiko Kanbara, Hiroshi Tamai
BACKGROUND: Migraine is a common and disabling neurological disorder. Studies attempting to determine a relationship between migraine and the autonomic nervous system (ANS) have been inconclusive. Moreover, pediatric studies are extremely limited. Therefore, the present study investigated interictal ANS function in adolescent migraineurs. METHODS: We studied 21 patients with migraine and 26 healthy controls. Beat-to-beat blood pressure (BP) and heart rate (HR) were noninvasively and continuously measured in the supine and standing positions...
June 14, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28602647/state-marker-properties-of-niacin-skin-sensitivity-in-ultra-high-risk-groups-for-psychosis-an-optical-reflection-spectroscopy-study
#4
Kerstin Langbein, Ulrike Schmidt, Stephan Schack, Natalie J Biesel, Maria Rudzok, G Paul Amminger, Maximus Berger, Heinrich Sauer, Stefan Smesny
Impaired niacin sensitivity (NS) is one of the most replicated findings in untreated schizophrenia, and reflects a disturbance of prostaglandin-mediated pathways in association with deregulated arachidonic acid metabolism, pro-inflammatory activation, and vasomotor function. In ultra-high risk individuals (UHR) increased NS was reported recently, pointing towards dynamic alterations of the underlying pathomechanisms in the period preceding psychosis. However, these characteristics are still unresolved in the diverse UHR groups...
June 8, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28602010/closed-loop-regulation-of-arterial-pressure-after-acute-brain-death
#5
Kristian Soltesz, Trygve Sjöberg, Tomas Jansson, Rolf Johansson, Anders Robertsson, Audrius Paskevicius, Quiming Liao, Guangqi Qin, Stig Steen
The purpose of this concept study was to investigate the possibility of automatic mean arterial pressure (MAP) regulation in a porcine heart-beating brain death (BD) model. Hemodynamic stability of BD donors is necessary for maintaining acceptable quality of donated organs for transplantation. Manual stabilization is challenging, due to the lack of vasomotor function in BD donors. Closed-loop stabilization therefore has the potential of increasing availability of acceptable donor organs, and serves to indicate feasibility within less demanding patient groups...
June 10, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28601397/pten-a-negative-regulator-of-pi3k-akt-signaling-sustains-brain-stem%C3%A2-cardiovascular-regulation-during-mevinphos-intoxication
#6
Ching-Yi Tsai, Jacqueline C C Wu, Chi Fang, Alice Y W Chang
Activation of PI3K/Akt signaling, leading to upregulation of nitric oxide synthase II (NOS II)/peroxynitrite cascade in the rostral ventrolateral medulla (RVLM), the brain stem site that maintains blood pressure and sympathetic vasomotor tone, underpins cardiovascular depression induced by the organophosphate pesticide mevinphos. By exhibiting dual-specificity protein- and lipid-phosphatase activity, phosphatase and tensin homolog (PTEN) directly antagonizes the PI3K/Akt signaling by dephosphorylation of phosphatidylinositol-3,4,5-trisphosphate, the lipid product of PI3K...
June 7, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28575410/enhanced-endothelin-1-rho-kinase-signaling-and-coronary-microvascular-dysfunction-in-hypertensive-myocardial-hypertrophy
#7
Shu-Huai Tsai, Guangrong Lu, Xin Xu, Yi Ren, Travis W Hein, Lih Kuo
Aims: Hypertensive cardiac hypertrophy is associated with reduced coronary flow reserve, but its impact on coronary flow regulation and vasomotor function remains incompletely understood and requires further investigation. Methods and results: Left ventricular hypertrophy was induced in mice by transverse aortic coarctation (TAC) for 4 weeks. The left coronary artery blood velocity (LCABV) and myocardium lactate level were measured following the metabolic activation by isoproterenol...
May 29, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28566303/sustained-increases-in-skin-blood-flow-are-not-a-pre-requisite-to-initiate-sweating-during-passive-heat-exposure
#8
Nicholas Ravanelli, Ollie Jay, Daniel Gagnon
Some studies have observed a functional relationship between sweating and skin blood flow. However, the implications of this relationship during physiologically-relevant conditions remain unclear. We manipulated sudomotor activity through changes in sweating efficiency to determine if parallel changes in vasomotor activity are observed. Eight young males completed two trials at 36°C and two trials at 42°C. During these trials, air temperature remained constant while ambient vapor pressure increased from 1...
May 31, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28553684/predictors-of-distress-in-female-breast-cancer-survivors-a-systematic-review
#9
REVIEW
Ania Syrowatka, Aude Motulsky, Siyana Kurteva, James A Hanley, William G Dixon, Ari N Meguerditchian, Robyn Tamblyn
PURPOSE: Unmanaged distress has been shown to adversely affect survival and quality of life in breast cancer survivors. Fortunately, distress can be managed and even prevented with appropriate evidence-based interventions. Therefore, the objective of this systematic review was to synthesize the published literature around predictors of distress in female breast cancer survivors to help guide targeted intervention to prevent distress. METHODS: Relevant studies were located by searching MEDLINE, Embase, PsycINFO, and CINAHL databases...
May 28, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28540569/altered-purinergic-signaling-in-uridine-adenosine-tetraphosphate-induced-coronary-relaxation-in-swine-with-metabolic-derangement
#10
Zhichao Zhou, Oana Sorop, Vincent J de Beer, Ilkka Heinonen, Caroline Cheng, A H Jan Danser, Dirk J Duncker, Daphne Merkus
We previously demonstrated that uridine adenosine tetraphosphate (Up4A) induces potent and partially endothelium-dependent relaxation in the healthy porcine coronary microvasculature. We subsequently showed that Up4A-induced porcine coronary relaxation was impaired via downregulation of P1 receptors after myocardial infarction. In view of the deleterious effect of metabolic derangement on vascular function, we hypothesized that the coronary vasodilator response to Up4A is impaired in metabolic derangement, and that the involvement of purinergic receptor subtypes and endothelium-derived vasoactive factors (EDVFs) is altered...
May 24, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/28538599/cardiac-autonomic-function-and-vasomotor-symptoms-too-much-break-and-not-enough-accelerator
#11
Puja K Mehta, Chrisandra L Shufelt, Cathleen Noel Bairey Merz
No abstract text is available yet for this article.
May 22, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28527876/short-term-exposure-of-erythropoietin-impairs-endothelial-function-through-inhibition-of-nitric-oxide-production-and-enos-mrna-expression-in-the-rat-pulmonary-artery
#12
Faheem Sultan, Thakur Uttam Singh, Tarun Kumar, Soya Rungsung, Dipankar Jyoti Rabha, Anamika Vishwakarma, Susanth V Sukumaran, Arunvikram Kandasamy, Subhashree Parida
BACKGROUND: Administration of recombinant erythropoietin (rEPO) is often associated with systemic and pulmonary arterial hypertension in animals and human. The present study was conducted to determine whether one-week rEPO-treatment can produce any effect on pulmonary vasomotor function. METHODS: Male Wistar rats were injected with rEPO (400IU/kg sc) or saline every other day for one week. Tension, biochemical and Real-Time PCR experiments were conducted on left and right branches of pulmonary artery and main pulmonary artery isolated from the rats...
February 4, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28501910/targeting-the-dominant-mechanism-of-coronary-microvascular-dysfunction-with-intracoronary-physiology-tests
#13
REVIEW
Hernán Mejía-Rentería, Nina van der Hoeven, Tim P van de Hoef, Julius Heemelaar, Nicola Ryan, Amir Lerman, Niels van Royen, Javier Escaned
The coronary microcirculation plays a key role in modulating blood supply to the myocardium. Several factors like myocardial oxygen demands, endothelial and neurogenic conditions determine its function. Although there is available evidence supporting microvascular dysfunction as an important cause of myocardial ischaemia, with both prognostic and symptomatic implications, its diagnosis and management in clinical practice is still relegated to a second plane. Both diagnostic and therapeutic approaches are hampered by the broadness of the concept of microvascular dysfunction, which fails addressing the plurality of mechanisms leading to dysfunction...
May 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28499520/prevalence-and-predictors-of-low-sexual-desire-sexually-related-personal-distress-and-hypoactive-sexual-desire-dysfunction-in-a-community-based-sample-of-midlife-women
#14
Roisin Worsley, Robin J Bell, Pragya Gartoulla, Susan R Davis
BACKGROUND: Low desire is the most common sexual problem in women at midlife. Prevalence data are limited by lack of validated instruments or exclusion of un-partnered or sexually inactive women. AIM: To document the prevalence of and factors associated with low desire, sexually related personal distress, and hypoactive sexual desire dysfunction (HSDD) using validated instruments. METHODS: Cross-sectional, nationally representative, community-based sample of 2,020 Australian women 40 to 65 years old...
May 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28490016/backup-mechanisms-maintain-pacap-vip-induced-arterial-relaxations-in-pituitary-adenylate-cyclase-activating-polypeptide-deficient-mice
#15
Ivan Ivic, Balazs D Fulop, Tamas Juhasz, Dora Reglodi, Gabor Toth, Hitoshi Hashimoto, Andrea Tamas, Akos Koller
BACKGROUND: Pituitary adenylate cyclase-activating polypeptide (PACAP) is a multifunctional neuropeptide in the VIP/secretin/glucagon peptide superfamily. Two active forms, PACAP1-38 and PACAP1-27, act through G protein-coupled receptors, the PAC1 and VPAC1/2 receptors. Effects of PACAP include potent vasomotor activity. Vasomotor activity and organ-specific vasomotor effects of PACAP-deficient mice have not yet been investigated; thus, the assessment of its physiological importance in vasomotor functions is still missing...
2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/28487152/effects-of-ticagrelor-on-neointimal-hyperplasia-and-endothelial-function-compared-with-clopidogrel-and-prasugrel-in-a-porcine-coronary-stent-restenosis-model
#16
Hyun Kuk Kim, Myung Ho Jeong, Kyung Seob Lim, Jung Ha Kim, Han Chul Lim, Min Chul Kim, Young Joon Hong, Sung Soo Kim, Keun-Ho Park, Kyoung-Sig Chang
BACKGROUND: Several investigations have been conducted to evaluate the off-target effects of ticagrelor. The aim of the present study was to evaluate the off-target effects of ticagrelor such as neointimal formation and endothelial function after drug-eluting stent implantation in a porcine restenosis model. METHODS: A total of 30 pigs were randomly allocated based on the following P2Y12 inhibitor: (1) clopidogrel 300mg loading plus 75mg maintenance (n=10); (2) prasugrel 60mg loading plus 10mg maintenance (n=10); (3) ticagrelor 180mg loading plus 180mg maintenance (n=10)...
May 3, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28451451/abnormal-haemodynamic-postural-response-in-patients-with-chronic-heart-failure
#17
Anne-Sophie G T Bronzwaer, Lysander W J Bogert, Berend E Westerhof, Jan J Piek, Mat J A P Daemen, Johannes J van Lieshout
AIM: The objective was to evaluate in treated heart failure (HF) patients whether multidrug therapy interferes with the cardiovascular autonomic response to postural stress. METHODS AND RESULTS: Blood pressure (BP; Finapres), heart rate (HR), stroke volume, and total peripheral resistance (TPR) responses to standing up were measured in 33 HF patients and 10 healthy age-matched controls. Ten hypertensive (HT) patients treated with a similar combination of drugs but without heart failure served as reference subjects to account for use of medication...
May 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28448188/effects-of-indomethacin-on-prostanoid-synthesis-and-vasomotor-responsiveness-in-endothelium-denuded-abdominal-and-thoracic-aortas-of-wistar-rats
#18
Ruth M López, Janette E López, Jorge S López, María C Castillo, Gustavo Guevara, José A Morales, Oscar A López, Jair Lozano, Enrique F Castillo
In endothelium-denuded abdominal (but not thoracic) aortas of rats, the nonselective cyclooxygenase (COX) inhibitor, indomethacin, suppressed contractions evoked by α-adrenergic agonists hypothetically mediated by prostanoids. We aimed to identify these non-endothelial-derived contractile prostanoids released by α-adrenergic receptors activation. Endothelium-denuded abdominal and thoracic aortas of Wistar rats were used for biochemical and functional analyses. Western blot analysis showed that COX-1 and COX-2 protein levels were respectively equivalent in endothelium-denuded abdominal and thoracic aortas...
2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28439028/bgp-15-prevents-the-death-of-neurons-in-a-mouse-model-of-familial-dysautonomia
#19
Sarah B Ohlen, Magdalena L Russell, Michael J Brownstein, Frances Lefcort
Hereditary sensory and autonomic neuropathy type III, or familial dysautonomia [FD; Online Mendelian Inheritance in Man (OMIM) 223900], affects the development and long-term viability of neurons in the peripheral nervous system (PNS) and retina. FD is caused by a point mutation in the gene IKBKAP/ELP1 that results in a tissue-specific reduction of the IKAP/ELP1 protein, a subunit of the Elongator complex. Hallmarks of the disease include vasomotor and cardiovascular instability and diminished pain and temperature sensation caused by reductions in sensory and autonomic neurons...
May 9, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28434187/ultrasound-guided-intra-articular-injection-of-the-radio-ulnar-and-radio-humeral-joints-and-ultrasound-guided-dry-needling-of-the-affected-limb-muscles-to-relieve-fixed-pronation-deformity-and-myofascial-issues-around-the-shoulder-in-a-case-of-complex-regional
#20
Renuka S Pai, Lakshmi Vas
BACKGROUND: Complex regional pain syndrome (CRPS) occurs due to different pathophysiological mechanisms. Presently there is no description of definitive treatment that can resolve the especially recalcitrant motor issues of disability in CRPS type 1 (CRPS-1). CASE REPORT: We have herein described the successful management of motor disability with a multimodal approach in a patient with CRPS-1 that occurred as a result of a fracture sustained in the lower end of the radius...
April 23, 2017: Pain Practice: the Official Journal of World Institute of Pain
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