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Effect of noise stress on rat brain histopathology, ultrastructure and neurotransmitter activity
Journal of the Medical Research Institute-Alexandria University. 1997; 18 (1): 64-73
em Inglês | IMEMR | ID: emr-170668
Biblioteca responsável: EMRO
ABSTRACT
Exposure to noise can elicit generalized stress disturbances in the body by way of neuroendocrine mediation. The effect of exposure of a group of albino rats to noise produced by a full range loud speaker installed 50 cm directly above the animal cage producing a sine wave noise of 135 dB at 500 HZ for 3 hours daily for 7 days, was studied. Histopathological and electron microscopic [EM] examination of rat's cerebral cortex [temporal lobe], medulla oblongata and cerebellum and monoamineoxidase [MAO] and a cetyicholinesterase [AChE] enzyme activity changes in the same brain parts were recorded. The results revealed non specific degenerative reactions to stress caused by noise in exposed rats and decreased enzyme activity of AChE and MAO in the medulla oblongata and temporal lobe respectively. These changes may explain the mental, neurobehavioural changes caused by noise stress
Assuntos
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Base de dados: IMEMR Assunto principal: Acetilcolinesterase / Ratos / Encéfalo / Microscopia Eletrônica / Neurotransmissores / Histologia / Monoaminoxidase Limite: Animais Idioma: Inglês Revista: J. Med. Res. Inst.-Alex. Univ. Ano de publicação: 1997
Buscar no Google
Base de dados: IMEMR Assunto principal: Acetilcolinesterase / Ratos / Encéfalo / Microscopia Eletrônica / Neurotransmissores / Histologia / Monoaminoxidase Limite: Animais Idioma: Inglês Revista: J. Med. Res. Inst.-Alex. Univ. Ano de publicação: 1997
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