Clinical implications from studies of alpha1 adrenergic receptor knockout mice.
alpha1-Adrenergic receptors (alpha1-ARs) modulate a large number of physiological functions in cardiovascular and noncardiovascular tissues. Because individual members of the alpha1-AR family (alpha1A-, alpha1B-, and alpha1D-ARs) have overlapping expression profiles in most tissues, elucidation of the precise physiological roles of individual alpha1-AR subtypes remains a challenging task. To alleviate this constraint, a gene targeting approach has been employed to generate mutant mice lacking one or two alpha1-AR genes. Recent studies on these mutant mouse strains are discussed in this article, with an emphasis on the role of alpha1-AR in the central nervous system and lower urinary tracts. These are two major tissues of particular interest for the development of new therapeutic strategies targeted to the alpha1-ARs. By combining gene targeting techniques with pharmacological tools, the specific roles of alpha1-AR subtypes could be delineated.
Koshimizu
Taka-aki
TA
Department of Genomic Drug Discovery Science, Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan.
Tanoue
Akito
A
Tsujimoto
Gozoh
G
D000818:Animals; D030801:Animals, Genetically Modified; D001522:Behavior, Animal / Q000502:physiology*; D002490:Central Nervous System / Q000378:metabolism / Q000502:physiology*; D051379:Mice; D018345:Mice, Knockout; D018340:Receptors, Adrenergic, alpha-1 / Q000235:genetics / Q000378:metabolism / Q000502:physiology*; D014551:Urinary Tract / Q000378:metabolism
D018340:Receptors, Adrenergic, alpha-1