Characteristics of behavioral abnormalities in α1d- adrenoceptors deficient mice

Kenichi Mishima, Akito Tanoue, Masakazu Tsuda, Nobuyoshi Hasebe, Yoshihiko Fukue, Nobuaki Egashira, Yukio Takano, Hiro O. Kamiya, Gozoh Tsujimoto, Katsunori Iwasaki, Michihiro Fujiwara

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

To investigate the functional role of α1d-adrenergic receptor (α1d-AR) in the CNS, we have generated mutant mice lacking the α1d-AR using a gene targeting approach and examined in detail the effects of α1d-AR knockout mice on motor function, sensory function, and learning and memory. α1d-AR knockout mice showed better motor coordination at the highest rotating speed of the rotarod performance and stronger muscle tone using the traction meter, but their locomotor activity and swimming ability in the water maze were not affected. In the water maze requiring reference memory, α1d-AR knockout mice showed normal spatial learning. In the Y-maze task requiring working memory or attention, α1d-AR knockout mice displayed an impaired spontaneous alternation performance. The α1d-AR knockout mice tended to display lower levels of acoustic startle responses than the wild-type group at lower pulse intensities, although the acoustic prepulse inhibition was not impaired in the α1d-AR knockout mice. Furthermore, the NMDA receptor antagonist, MK-801-induced deficits of acoustic prepulse inhibition were not observed in the α1d-AR knockout mice. These results clearly demonstrate that the α1d-AR receptor plays an important role in the process of auditory sensory function, attention or working memory rather than reference memory, and the sensorimotor gating deficits induced by the NMDA receptor antagonist.

Original languageEnglish
Pages (from-to)365-373
Number of pages9
JournalBehavioural Brain Research
Volume152
Issue number2
DOIs
Publication statusPublished - Jul 9 2004
Externally publishedYes

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Adrenergic Receptors
Knockout Mice
Acoustics
N-Methyl-D-Aspartate Receptors
Short-Term Memory
Startle Reflex
Sensory Gating
Aptitude
Dizocilpine Maleate
Gene Targeting
Water
Traction
Locomotion
Learning
Muscles

All Science Journal Classification (ASJC) codes

  • Behavioral Neuroscience

Cite this

Characteristics of behavioral abnormalities in α1d- adrenoceptors deficient mice. / Mishima, Kenichi; Tanoue, Akito; Tsuda, Masakazu; Hasebe, Nobuyoshi; Fukue, Yoshihiko; Egashira, Nobuaki; Takano, Yukio; Kamiya, Hiro O.; Tsujimoto, Gozoh; Iwasaki, Katsunori; Fujiwara, Michihiro.

In: Behavioural Brain Research, Vol. 152, No. 2, 09.07.2004, p. 365-373.

Research output: Contribution to journalArticle

Mishima, K, Tanoue, A, Tsuda, M, Hasebe, N, Fukue, Y, Egashira, N, Takano, Y, Kamiya, HO, Tsujimoto, G, Iwasaki, K & Fujiwara, M 2004, 'Characteristics of behavioral abnormalities in α1d- adrenoceptors deficient mice', Behavioural Brain Research, vol. 152, no. 2, pp. 365-373. https://doi.org/10.1016/j.bbr.2003.10.038
Mishima, Kenichi ; Tanoue, Akito ; Tsuda, Masakazu ; Hasebe, Nobuyoshi ; Fukue, Yoshihiko ; Egashira, Nobuaki ; Takano, Yukio ; Kamiya, Hiro O. ; Tsujimoto, Gozoh ; Iwasaki, Katsunori ; Fujiwara, Michihiro. / Characteristics of behavioral abnormalities in α1d- adrenoceptors deficient mice. In: Behavioural Brain Research. 2004 ; Vol. 152, No. 2. pp. 365-373.
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