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Contractility describes the relative ability of the heart to eject a stroke volume (SV) at a given prevailing afterload (arterial pressure) and preload (end-diastolic volume; EDV). Various measures of contractility are related to the fraction as the SV/EDV or the ejection fraction, and the dynamics of ejection as determined from maximum pressure rise in the ventricles or arteries or from aortic flow velocities determined by echocardiography. At the cellular level, the ultimate determinant of contractility is the relative tension generation and shortening capability of the molecular motors (myosin cross-bridges) of the sarcomeres as determined by the rates and extent of Ca activation, the tur...
Continuing to explore the relationship between the chemistry of metals and life processes, this volume in the Metal Ions in Biological Systems series examines the degradation of environmental pollutants by micro-organisms. It covers the action of micro-organisms and metalloenzymes on lignin, tannins, hemicelluloses, cellulose and aromatic compounds, as well as on halogenated aromatics and aliphatics; analyzes mechanistic aspects; considers the role of metalloproteases in biotechnology and wastewater sludge treatment; and describes the metal-dependent conversion of inorganic nitrogen and sulfur compounds.
It is a pleasure to introduce Volume 5 in the Methods in Pharmacology series. In 1971, Volume 1 of this series was published while I was Head of the Division of Myocardial Biology in the Department of Pharmacology at Baylor College of Medicine in Houston, Texas. I dedicated that first volume to Sir Henry Hallet Dale, who died on July 23, 1968. In the Preface I pointed out that many of the pharmacological advancements that occurred during the last century were direct descendants from the classic paper published in 1910 by Professor Dale and his colleague, Dr. Barger. In this paper, the concept of "specific receptor sites" was introduced by the statement that "the relationship of the recepted ...
Subjects in the monograph “Biophysics of the Failing Heart” include state of the art chapters considering major biophysical mechanisms for why hearts responding to acquired or inherited stressors enter into maladaptive processes eventually leading to an inability of the heart to respond efficiently to hemodynamic loads especially during exercise. The chapters describe biophysical techniques that have been applied to determine the triggers for the heart failure process as well as the mechanisms for sustaining the disorders. These techniques include measurements of active and passive mechanical properties and hemodynamics at levels of organization ranging from molecules to hearts beating i...
This title reviews current knowledge of the mechanisms contributing to heart failure. Editor Richard Walsh and an internationally renowned team of contributors discuss key advances in molecular and cell biology, biochemistry, and pharmacology, focusing on advances that have a direct bearing on current clinical studies. It highlights developments across a broad range of disciplines, with in-depth coverage of each topic providing background and perspective on current literature. By setting new advances in a broader context, this text allows readers to compare different ideas and evaluate their importance in their own areas of research or clinical practice.
This special issue of Molecular and Cellular Biochemistry good source of information in this regard. contains original research papers as well as invited reviews We wish to thank all of the contributors for their help and dedicated, on the occasion of the 40th anniversary of the in cooperation. We also wish to thank Mrs. Verona Kuhle for auguration of the Heart Research Group in Beriin-Buch that her secretarial help. We are grateful to Dr. Naranjan S. Dhalla, today forms a part there ofthe Max Delbriick Center for Mo Editor-in-Chief of Molecular and Cellular Biochemistry for his lecular Medicine, to Professor Albert Wollenberger, founder interest and encouragement, and for agreeing to publis...