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A Genetic Variant of miR-34a Contributes to Susceptibility of Ischemic Stroke Among Chinese Population
This study was supported by National Natural Science Foundation of China (Nos. 81560552, 81260234), Natural Science Foundation of Guangxi Zhuang Autonomous Region (CN) (2017JJA180826), Innovation Project of Guangxi Graduate Education (CN) (201601009) and Key Laboratory Open Project Fund of Guangxi Zhuang Autonomous Region (CN) (kfkt20160064). Conflict of Interest Statement The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. Supplementary Material The Supplementary Material for this article can be fou...
Source: Frontiers in Physiology - April 23, 2019 Category: Physiology Source Type: research

The lncRNA MALAT1 rs619586 G Variant Confers Decreased Susceptibility to Recurrent Miscarriage
In conclusion, our study suggests that the rs619586 G variant may have potential protective effects conferring a decreased risk of recurrent miscarriage in the southern Chinese population. Introduction Recurrent miscarriage is defined as the loss of two or more consecutive pregnancies before 20 weeks of gestation (Jaslow et al., 2010; Diejomaoh, 2015). The occurrence of recurrent miscarriage is associated with many factors, including genetic factors, immunological dysfunction, endocrine disorders, unhealthy lifestyles and defects of the reproductive organs (Saravelos and Regan, 2014; Sen et al., 2014; Garrido-Gimen...
Source: Frontiers in Physiology - April 8, 2019 Category: Physiology Source Type: research

Voltage-Gated Proton Channels: Molecular Biology, Physiology, and Pathophysiology of the HV Family
Voltage-gated proton channels (HV) are unique, in part because the ion they conduct is unique. HV channels are perfectly selective for protons and have a very small unitary conductance, both arguably manifestations of the extremely low H+ concentration in physiological solutions. They open with membrane depolarization, but their voltage dependence is strongly regulated by the pH gradient across the membrane (pH), with the result that in most species they normally conduct only outward current. The HV channel protein is strikingly similar to the voltage-sensing domain (VSD, the first four membrane-spanning segments) of volta...
Source: Physiological Reviews - April 15, 2013 Category: Physiology Authors: DeCoursey, T. E. Tags: Articles Source Type: research

Voltage-Gated Proton Channels: Molecular Biology, Physiology, and Pathophysiology of the HV Family.
Abstract Voltage-gated proton channels (HV) are unique, in part because the ion they conduct is unique. HV channels are perfectly selective for protons and have a very small unitary conductance, both arguably manifestations of the extremely low H(+) concentration in physiological solutions. They open with membrane depolarization, but their voltage dependence is strongly regulated by the pH gradient across the membrane (ΔpH), with the result that in most species they normally conduct only outward current. The HV channel protein is strikingly similar to the voltage-sensing domain (VSD, the first four membrane-spann...
Source: Physiological Reviews - April 1, 2013 Category: Physiology Authors: Decoursey TE Tags: Physiol Rev Source Type: research

Voltage-gated proton channels: molecular biology, physiology, and pathophysiology of the H(V) family.
Abstract Voltage-gated proton channels (H(V)) are unique, in part because the ion they conduct is unique. H(V) channels are perfectly selective for protons and have a very small unitary conductance, both arguably manifestations of the extremely low H(+) concentration in physiological solutions. They open with membrane depolarization, but their voltage dependence is strongly regulated by the pH gradient across the membrane (ΔpH), with the result that in most species they normally conduct only outward current. The H(V) channel protein is strikingly similar to the voltage-sensing domain (VSD, the first four membrane...
Source: Physiological Reviews - April 1, 2013 Category: Physiology Authors: DeCoursey TE Tags: Physiol Rev Source Type: research

Experimental Cardiac Radiation Exposure Induces Ventricular Diastolic Dysfunction with Preserved Ejection Fraction.
CONCLUSION: Experimental cardiac radiation exposure resulted in diastolic dysfunction without reduced EF. These data provide insight into the association between cardiac radiation exposure and HFpEF risk and lend further support for the importance of inflammation related coronary microvascular compromise in HFpEF. PMID: 28550173 [PubMed - as supplied by publisher]
Source: American Journal of Physiology. Heart and Circulatory Physiology - May 26, 2017 Category: Physiology Authors: Saiki H, Moulay G, Guenzel AJ, Liu W, Decklever T, Classic K, Pham L, Chen HH, Burnett JC, Russell SJ, Redfield MM Tags: Am J Physiol Heart Circ Physiol Source Type: research

Determinants of exercise intolerance in breast cancer patients prior to anthracycline chemotherapy
We sought to interrogate previous reports that fitness in breast cancer patients was less than expected for community norms. As compared with healthy control subjects, we observed reduced oxygen consumption capacity in recently diagnosed breast cancer patients prior to treatment. This reduced capacity was associated with smaller heart size and reduced peak exercise cardiac output. This may suggest that reduced exercise conditioning is associated with breast cancer risk. AbstractWomen with early ‐stage breast cancer have reduced peak exercise oxygen uptake (peakVO2). The purpose of this study was to evaluate peakVO2 and r...
Source: Physiological Reports - January 10, 2019 Category: Physiology Authors: Rhys I. Beaudry, Erin J. Howden, Steve Foulkes, Ashley Bigaran, Piet Claus, Mark J. Haykowsky, Andre La Gerche Tags: Original Research Source Type: research

Comparison of impedance cardiography and cardiac magnetic resonance imaging for the evaluation of cardiac function in early-stage breast cancer patients
Objective. Breast cancer treatment can negatively impact cardiac function in some breast cancer patients. Current methods (MUGA, echocardiography) used in clinical practice to detect abnormal cardiac changes as a result of treatment suffer from important limitations. Use of alternative techniques that would offer safe, inexpensive and non-invasive cardiac function assessment in this population would be highly advantageous. The aim of this study was to examine the agreement between impedance cardiography (ICG) and cardiac magnetic resonance imaging (CMR) in quantifying stroke volume (SV), cardiac output (CO) and end-d...
Source: Physiological Measurement - November 3, 2021 Category: Physiology Authors: Erifyli Piastopoulou, Parvaiz Ali, Gianfilippo Bertelli, Martyn Heatley, Maung Moe, Chandramohan Murugesan, Gareth Stratton and Michael Lewis Source Type: research

Molecular and pharmacological aspects of piperine as a potential molecule for disease prevention and management: evidence from clinical trials
CONCLUSION: Based on the current evidence, piperine can be the potential molecule for treatment of disease, and its significance of this molecule in the clinic is discussed.PMID:35127957 | PMC:PMC8796742 | DOI:10.1186/s43088-022-00196-1
Source: Appl Human Sci - February 7, 2022 Category: Physiology Authors: Amit Kumar Tripathi Anup Kumar Ray Sunil Kumar Mishra Source Type: research

Breast cancer survivors with preserved or rescued cardiorespiratory fitness have similar cardiac, pulmonary and muscle function compared to controls
AbstractBreast cancer survivors (BCS) have a high prevalence of cardiovascular disease and low cardiorespiratory fitness (CRF). CRF is an important predictor of survival in BCS. However, the physiological factors that contribute to low CRF in BCS have not been completely elucidated. To assess differences in physiological factors (cardiac, pulmonary, muscle function) related to CRF between BCS and controls. Twenty-three BCS and 23 age-body mass index (BMI) matched controls underwent a peak cycling exercise test to determine CRF, with physiological factors measured at resting and at peak exercise. Cardiac hemodynamics (strok...
Source: European Journal of Applied Physiology - July 7, 2022 Category: Physiology Source Type: research