Local Control of Microvascular Perfusion (Colloquium Series on Integrated Systems Physiology) - Tapa blanda

Sinopsis

Local control of microvascular perfusion refers to the ability of individual tissues to maintain a relative constancy of hemodynamics in the face of changing perfusion pressure while meeting metabolic demands appropriately. The regulation of local blood flow, or autoregulation, and its underlying mechanisms have been a subject of considerable interest for over 100 years. Particular focus has been placed on the acute interaction of myogenic (pressure-induced) and metabolic (local production of vasodilator metabolites) parameters and how they interact with flow (shear stress)-dependent and conduction-based mechanisms to produce integrated local vascular network responses (for example, as seen during reactive and functional hyperemia). This monograph discusses each of these vasoregulatory phenomena while also considering evidence for their underlying cellular mechanisms. Further, an attempt is made to integrate the information into complex in vivo situations and consider their relevance to pathophysiological situations. Table of Contents: Abbreviations / Acknowledgments / Introduction / Historical Perspectives / Microcirculatory Elements Affecting Blood Flow Control / Autoregulation / Myogenic Vasoconstriction and Dilation / Metabolic Control of Blood Flow / Endothelial-Mediated Mechanisms of Local Blood Flow Regulation / Interactions Between Local Control Mechanisms / Interactions with Extrinsic Control Mechanisms / Vascular Heterogeneity / Alterations in Microvascular Blood Flow Control in Pathophysiology / Long-Term Regulation of Blood Flow / Summary / References / Author Biographies

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