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  • Title: [Somatosympathetic reflex in rats with various models of arterial hypertension].
    Author: Tsyrlin VA, Kuz'menko NV, Pliss MG, Shcherbin IuI.
    Journal: Ross Fiziol Zh Im I M Sechenova; 2011 May; 97(5):498-508. PubMed ID: 21874861.
    Abstract:
    Spontaneous and reflex activities of sympathetic nerve were compared in animals with arterial hypertension of different aetiology. Reflex discharges elicited by single-shock stimulation of afferent fibres were recorded. In acute experiences on anaesthetized rats with renovascular and spontaneous (SHR) model of arterial hypertension, electric basal and evoked activity (somatosympathetic reflex) in cervical sympathetic trunk were recorded. It is shown, that the spontaneous electric activity in sympathetic nerve of hypertensive rats is larger than spontaneous activity of normotensive control animals. The somatosympathetic reflex in hypertensive rats differs from that of control animals. In rats with renovascular model of hypertension, the reflex magnitude is reduced, and in the SHR the reflex is increased. Time characteristics of the reflex in hypertensive rats differed among them. It is suggested that functional activities of the brain stem in rats with different arterial hypertension model are unequal.
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