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Participation of G Proteins in Natriuretic Peptide Hormone Secretion from Heart Atria [PDF]

Endocrinology, 2004
The involvement of G proteins in the mechanism underlying the increased atrial natriuretic factor (ANF) secretion observed after atrial muscle stretch (stretch-secretion coupling) was assessed using a combined pharmacological, immunocytochemical, and tissue fractionation approach.
Michael, Bensimon, Astra I, Chang, Mercedes L Kuroski, de Bold, Amalia, Ponce, Daniel, Carreras, Adolfo J, De Bold   +5 more
semanticscholar   +4 more sources

The influence of epidural anesthesia on the electrical activity of heart atria. [PDF]

Kardiochir Torakochirurgia Pol, 2014
High thoracic epidural anesthesia (TEA) causes blockade of sympathetic fibers involved in innervation of the heart (segments T1-T4), which results in changes of cardiac electrophysiology. The anti-arrhythmic effects of TEA on supraventricular arrhythmias, mainly atrial fibrillation, are controversial.The aim of the study was to assess the influence of ...
Twardowski P, Owczuk R, Wujtewicz MA, Wojciechowski J, Marjanski T, Marciniak A, Wujtewicz M.   +6 more
europepmc   +5 more sources

Electrolyte Content of Rat Heart Atria and Ventricles [PDF]

Circulation Research, 1960
Extracellular tissue spaces are compared using inulin, sucrose, chloride and sodium in hearts perfused with Ringer-Locke solution by Langendorff's method. Also chloride and sodium spaces are given for unperfused, fresh hearts. From the inulin spaces the intracellular chloride, sodium, potassium and water concentrations in both perfused and unperfused ...
J. A. BARCLAY, E. J. HAMLEY, HELGA HOUGHTON   +2 more
openaire   +3 more sources

Trandolapril Attenuates Pro-Arrhythmic Downregulation of Cx43 and Cx40 in Atria of Volume Overloaded Hypertensive and Normotensive Rats [PDF]

Biomolecules
Pressure overload in non-treated or resistant hypertension (HTN) increases the risk of heart failure (HF) as well as the occurrence of fatal ventricular arrhythmias and stroke-provoking atrial fibrillation (AF), while perturbed connexin-43 (Cx43) and ...
Matúš Sýkora, Katarína Ondreják Andelová, Alexandra Mrvová, Barbara Szeiffová Bačová, Narcis Tribulová   +4 more
doaj   +2 more sources

Twin heart with a fused atria and separate ventricles in conjoined twins

Annals of Pediatric Cardiology, 2010
One of the most interesting congenital malformations is that of conjoined twins. We report echocardiographic features of twin heart in dicephalus, tribrachius, dispinous, thoracoomphalopagus twin. It showed two hearts fused at atrial level.
Ambar Sameer, Halkati Prabhu, Patted Suresh, Yavagal S   +3 more
doaj   +4 more sources

Heart Atria Granularity Effects of Changes in Water-Electrolyte Balance

Experimental Biology and Medicine, 1979
SummaryAtrial granularity was measured using a new morphometric method in rats subjected to procedures known to alter water-electrolyte balance. It was found that water deprivation and sodium deficiency lead to atrial hypergranulation, whereas, the combined administration of desoxycorticosterone (2.5 mg/100 g body wt/day) and 2% NaCl in the drinking ...
A. J. Bold
semanticscholar   +4 more sources

Univentricular heart with common atria. First historical cases

International Journal of Cardiology Congenital Heart Disease, 2021
We report the first well described case of single ventricle and common atria in 1887 in Nantes.
Emmanuel Drouin, Sylvestre Maréchaux, Patrick Hautecoeur   +2 more
doaj   +2 more sources

Transgenic mice overexpressing Pitx2 in the atria develop tachycardia-bradycardia syndrome. [PDF]

PLoS ONE
Sinoatrial node (SAN) dysfunction often accompanies supraventricular tachyarrhythmias such as atrial fibrillation (AF), which is referred to as tachycardia-bradycardia syndrome (TBS). Although there have been many studies on electrical remodeling in TBS,
Shunsuke Baba, Satoko Shinjo, Daiki Seya, Hiroki Bochimoto, Toru Akaike, Atsushi Nakano, Susumu Minamisawa   +6 more
doaj   +2 more sources

Electrical Remodeling of the Atria in Congestive Heart Failure [PDF]

Circulation, 2003
Background— Atrial fibrillation (AF) frequently complicates congestive heart failure (CHF). However, the electrophysiological substrate for AF in humans with CHF remains unknown. We evaluated the electrophysiological and electroanatomic characteristics of the atria in patients with CHF.
Sanders, P., Morton, J., Davidson, N., Spence, S., Vohra, J., Sparks, P., Kalman, J.   +6 more
openaire   +4 more sources

Hugely Dilated Atria Distorting Normal Heart Anatomy

Journal of the College of Physicians and Surgeons Pakistan, 2023
Null.
Wardah, Saleem, Furqan, Raheel, Fayaz, Iqbal   +2 more
openaire   +2 more sources