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  • Title: Role of histamine in motion sickness in Suncus murinus.
    Author: Kaji T, Saito H, Ueno S, Yasuhara T, Nakajima T, Matsuki N.
    Journal: Aviat Space Environ Med; 1991 Nov; 62(11):1054-8. PubMed ID: 1741719.
    Abstract:
    The levels of histamine (HA) and tele-methylhistamine (t-MH) were determined in five brain regions of Suncus murinus (suncus) and the effects of motion stimulus or drugs influencing the turnover of these amines were studied to elucidate the role of histamine in motion sickness. Shaking the animals for 2 min increased HA contents in telencephalon and diencephalon without significantly changing the t-MH levels. alpha-Fluoromethylhistidine (alpha-FMH), which is presumed to deplete the neuronal HA, tended to raise the HA levels. alpha-FMH slightly alleviated the vomiting response to motion stimulus and suppressed the HA increase in diencephalon caused by shaking. Compound 48/80, which releases HA from mast cells, did not alter the control HA levels, but effectively prevented the motion sickness and completely suppressed the motion-induced rises in HA levels. These results provide further evidence that brain HA plays an important role in the development of motion sickness.
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