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Ketamine may enhance some cognitive processes in humans

100%

Jakubow P., Braszko J. J.

Acta Neurobiologiae Experimentalis

2001

tom 61

nr 3

Propofol protects rat astroglial cells against tert-butyl hydroperoxide-induced cytotoxicity; the effect on histone and cAMP-response-element-binding protein (CREB) signalling

51%

Holownia A., Mroz R. M., Wielgat P., Skiepko A., Sitko E., Jakubow P., Kolodziejczyk A., Braszko J. J.

Journal of Physiology and Pharmacology

2009

tom 60

nr 4

63-69

Propofol can be potentially beneficial in oxidative stress related malignancies as neurodegenerative diseases and traumatic brain injury but its signalling pathways are poorly understood. In this study effect of propofol on astroglial signalling in oxidative stress was evaluated. Ten days old cultures of rat astroglial cells were treated for 1 hour with t-butyl hydroperoxide (tBHP) to induce oxidative stress following by 1 hour propofol. We measured cytotoxicity, changes in cell growth and apoptosis as well as alterations in expression and acetylation of chromatin core H3 and H4 histone proteins and changes in native and phosphorylated cAMP-response-element-binding protein (CREB). tBHP induced limited cytotoxicity, increased apoptosis, decreased glutamine synthetase and enolase activities, decreased nuclear CREB, CREB-P and histone proteins but unchanged cytosolic CREB and histone acetyltransferase (HDAC) expression. Propofol clearly protected the cells against tBPH-induced toxicity, normalized alterations in cell growth, restored to some extent glial enzyme activities and reduced apoptotic cell numbers. Also, propofol restored H3 but not H4 expression/activation, but was without effect on decreased nuclear CREB expression/activation. These data show that oxidative stress in cultured astroglia significantly affects nuclear CREB and histone proteins and point to the protective role of propofol.

Ograniczanie wyników

1 Acta Neurobiologiae Experimentalis

1 Journal of Physiology and Pharmacology

2 Braszko J. J.

2 Jakubow P.

1 Holownia A.

1 Kolodziejczyk A.

1 Mroz R. M.

1 Sitko E.

1 Skiepko A.

1 Wielgat P.

1 2009

1 2001

Wyniki wyszukiwania

Ketamine may enhance some cognitive processes in humans

Propofol protects rat astroglial cells against tert-butyl hydroperoxide-induced cytotoxicity; the effect on histone and cAMP-response-element-binding protein (CREB) signalling