neuronal rat brain damage caused by endogenous and exogenous hyperthermia

Clicks: 299
ID: 234354
2012
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Abstract
OBJECTIVE: Hyperthermia may induce pathologic alterations within body systems and organs including brain. In this study, neuronal effects of endogenous and exogenous hyperthermia (41°C) were studied in rats. METHODS: The endogenous hyperthermia (41°C) was induced by lipopolysaccharide and the exogenous by an (electric) heater. Possible neuronal damage was evaluated by examining healthy, apoptotic and necrotic cells, and heat shock proteins (HSP 27, HSP 70) in the cerebral cortex, cerebellum and hypothalamus RESULTS: At cellular level, when all neuronal tissues are taken into account; (i) a significant increase in the necrotic cells was observed in the both groups (p<0.05), (ii) while exogenous hyperthermia did not affect apoptotic process significantly, endogenous hyperthermia led to a significant increase in apoptosis (p<0.05), whereas (iii) HSP 70 levels increased in neuronal tissues (p<0.05) in the endogenous hyperthermia group, but they decreased in the exogenous hyperthermia group (p<0.05). No statistically significant change was observed in HSP 27 levels in both of the groups (p>0.05). CONCLUSION: The neural tissue of brain can show different degree of response to hyperthermia. But we can conclude that endogenous hyperthermia is more harmful to central nervous system than exogenous hyperthermia
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Authors ;Mustafa Aydın;Fatih Mehmet Kışlal;Mustafa Demirol;Feyza İnceköy Girgin;Nimet Kabakuş;Mesut Koçak
Journal primates; journal of primatology
Year 2012
DOI
10.4274/Tnd.53244
URL
http://www.tjn.org.tr/jvi.aspx?pdir=tjn&plng=eng&un=TJN-53244&look4=
Keywords
rat hyperthermia diseases of the nervous system brain damagemedicineneurology

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