A methylxanthine naturally occurring in some beverages and also used as a pharmacological agent. Caffeine's most notable pharmacological effect is as a central nervous system stimulant, increasing alertness and producing agitation. It also relaxes SMOOTH MUSCLE, stimulates CARDIAC MUSCLE, stimulates DIURESIS, and appears to be useful in the treatment of some types of headache. Several cellular actions of caffeine have been observed, but it is not entirely clear how each contributes to its pharmacological profile. Among the most important are inhibition of cyclic nucleotide PHOSPHODIESTERASES, antagonism of ADENOSINE RECEPTORS, and modulation of intracellular calcium handling
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QuickPlace. : Deploying QuickPlace / David Morrison ... [and others]
2002
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QuickQuant. : Quantitative methods for business decisions, with cases / Lawrence L. Lapin
Larsen, Nella. Quicksand. : Novels for students. Volume 48 : presenting analysis, context, and criticism on commonly studied novels / Sara Constantakis, project editor ; foreword by Anne Devereaux Jordan
Quiet Interesting (Television program) : The book of general ignorance / John Lloyd and John Mitchinson; [foreword by Stephen Fry & four words by Alan Davies]
Quigless, Helen Gordon : Contemporary Black biography. Volume 49 : profiles from the international Black community / Sara Pendergast and Tom Pendergast, editors
2005
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Quigley, Fannie, 1871-1944 : Searching for Fannie Quigley a wilderness life in the shadow of Mount McKinley / Jane G. Haigh
Quigley, Rob Wellington -- Themes, motives. : Rob Wellington Quigley : buildings ₊ projects / introduction by Magali Sarfatti Larson ; essays by Michael Benedikt, Aaron Betsky, Ann Jarmusch