No full text
Article (Scientific journals)
Phosphorylated Thiamine Derivatives and Cortical Activity in the Baboon Papio Papio: Effect of Intermittent Light Stimulation
Bettendorff, Lucien; Schoffeniels, Ernest; Naquet, R. et al.
1989In Journal of Neurochemistry, 53 (1), p. 80-87
Peer Reviewed verified by ORBi
 

Files


Full Text
No document available.

Send to



Details



Abstract :
[en] The effect of intermittent light stimulation (ILS) on the distribution of thiamine derivatives in three brain areas (occipital, motor, and premotor) was compared in photosensitive and nonphotosensitive baboons. ILS induces paroxysmal discharges in the motor and premotor areas of photosensitive animals only. In baboons submitted to ILS, thiamine triphosphate (TTP) decreases in both photosensitive and nonphotosensitive animals; thiamine monophosphate (TMP) increases in photosensitive animals, which present ILS-induced paroxysmal discharges, whereas it is unaffected in nonphotosensitive animals. The variations are the most significant in the occipital (visual) cortex. A consumption of TTP may result from electrical activity induced by light stimulation in the occipital area. No correlation between ILS-induced paroxysmal activity and a decrease in TTP contents was found. However, photosensitive animals are affected differently from nonphotosensitive animals, as their content of TMP in the cerebral cortex increases on stimulation. However, as long as the exact role of thiamine compounds in relation to membrane excitability in the nervous system remains unknown, it is impossible to conclude whether the differences observed in the metabolism of thiamine compounds are the cause or the consequence of the photosensitivity in the baboon Papio papio.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Bettendorff, Lucien  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie humaine et pathologique
Schoffeniels, Ernest
Naquet, R.
Silva-Barrat, C.
Riche, D.
Menini, C.
Language :
English
Title :
Phosphorylated Thiamine Derivatives and Cortical Activity in the Baboon Papio Papio: Effect of Intermittent Light Stimulation
Publication date :
1989
Journal title :
Journal of Neurochemistry
ISSN :
0022-3042
eISSN :
1471-4159
Publisher :
Blackwell, Oxford, United Kingdom
Volume :
53
Issue :
1
Pages :
80-87
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 January 2009

Statistics


Number of views
34 (7 by ULiège)
Number of downloads
0 (0 by ULiège)

Scopus citations®
 
19
Scopus citations®
without self-citations
5
OpenCitations
 
19

Bibliography


Similar publications



Contact ORBi