TY - JOUR
T1 - Lack of temperature-induced polypnea in histamine H1 receptor-deficient mice
AU - Izumizaki, Masahiko
AU - Iwase, Michiko
AU - Kimura, Hiroshi
AU - Yanai, Kazuhiko
AU - Watanabe, Takehiko
AU - Watanabe, Takeshi
AU - Homma, Ikuo
PY - 2000/4/28
Y1 - 2000/4/28
N2 - Breathing patterns are influenced by body temperature. However, the central mechanism for changes of breathing patterns is unknown. We previously showed that central histamine contributed to temperature-induced polypnea in mice (Izumizaki, M., Iwase, M., Homma, I., Yanai, K., Watanabe, T. and Watanabe, T., Central histamine contributed to the temperature-induced polypnea in mice, Neurosci. Res., 23 (1999) S282). In this study we examined the role of central histamine H1 receptors in temperature-induced polypnea using wild and mutant mice lacking histamine H1 receptors. Breathing patterns were characterized at two different body temperatures during hypercapnia under conscious conditions. In wild mice a raised body temperature increased respiratory frequency mainly due to a reduction in expiratory time, whereas in mutant mice respiratory frequency did not increase even though the body temperature was elevated. These results indicate that central histamine contributes to an increase in respiratory frequency due to a reduction in expiratory time through histamine H1 receptors when body temperature is raised. Copyright (C) 2000 Elsevier Science Ireland Ltd.
AB - Breathing patterns are influenced by body temperature. However, the central mechanism for changes of breathing patterns is unknown. We previously showed that central histamine contributed to temperature-induced polypnea in mice (Izumizaki, M., Iwase, M., Homma, I., Yanai, K., Watanabe, T. and Watanabe, T., Central histamine contributed to the temperature-induced polypnea in mice, Neurosci. Res., 23 (1999) S282). In this study we examined the role of central histamine H1 receptors in temperature-induced polypnea using wild and mutant mice lacking histamine H1 receptors. Breathing patterns were characterized at two different body temperatures during hypercapnia under conscious conditions. In wild mice a raised body temperature increased respiratory frequency mainly due to a reduction in expiratory time, whereas in mutant mice respiratory frequency did not increase even though the body temperature was elevated. These results indicate that central histamine contributes to an increase in respiratory frequency due to a reduction in expiratory time through histamine H1 receptors when body temperature is raised. Copyright (C) 2000 Elsevier Science Ireland Ltd.
KW - Body temperature
KW - Breathing pattern
KW - Carbon dioxide
KW - Expiratory time
KW - Heat loss
KW - Histamine H1 receptors
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U2 - 10.1016/S0304-3940(00)01000-4
DO - 10.1016/S0304-3940(00)01000-4
M3 - Article
C2 - 10773418
AN - SCOPUS:0034724798
VL - 284
SP - 139
EP - 142
JO - Neuroscience Letters
JF - Neuroscience Letters
SN - 0304-3940
IS - 3
ER -