APPEARANCE OF STELLATE SMOOTH MUSCLE CELLS IN THE RAT BRAIN AFTER TRANSITORY FOCAL ISCHEMIA



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详细

One of the poorly studied problems of the pathogenesis of the brain ischemic damage is the early reorganization of blood vessels in the zone of the transitory ischemia. The aim of the present study was to investigate the structural organization and cytochemical characteristics of smooth muscle cells (SMC) in the wall of the intracerebral blood vessels in 16 Wistar rats during the early postischemic period (48 hrs after a 30 minute-long ischemia). Examination of the lesioned hemisphere revealed the stellate cells, demonstrating positive reaction to alpha-smooth muscle actin, which seem to be a special population of structurally modified SMC, uncharacteristic to the intact brain of control animals (n=5). The functional role of these cells remains to be elucidated.

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作者简介

D. Korzhevskiy

RAMS North-Western Branch Institute of Experimental Medicine

Email: DEK2@yandex.ru

O. Kirik

RAMS North-Western Branch Institute of Experimental Medicine

Email: iemmorphol@yandex.ru

T. Vlasov

I. P. Pavlov State Medical University

Email: tvlasov@yandex.ru

参考

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  2. Коржевский Д. Э. Сосудистое сплетение головного мозга человека: гистогенез и тканевая организация: Автореф. дис. … д-ра мед. наук. СПб., 2001.
  3. Коржевский Д. Э., Отеллин В. А., Неокесарийский А. А. и др. Организация и цитохимические особенности барьерных структур плаценты человека. Морфология, 2006, т. 129, вып. 3, с. 63–64.
  4. Korzhevskii D. E., Kirik O. V., Baisa A. E. and Vlasov T. D. Simulation of unilateral ischemic injury to the striatal neurons inflicted by short-term occlusion of the middle cerebral artery. Bull. Exp. Biol. Med., 2009, v. 147, № 2, p. 255–256.
  5. Otellin V. A., Korzhevskii D. E., Kostkin V. B. et al. The neuroprotective effect of creatin in rats with cerebral ischemia. Dokl. Biol. Sci., 2003, v. 390, p. 197–199.
  6. Sharma V., Ling T. W., Rewell S. S. et al. A novel population of α-smooth muscle actin-positive cells activated in rat model of stroke: an analysis of the spatio-temporal distribution in response to ischemia. J. Cereb. Blood Flow Metab., 2012., v. 32, № 11, p. 2055–2065.

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