[Variation in the localization of NADPH-d positive neurons in the gray matter of the spinal cord in different species].
The presence of NADPH-diaphorase (NADPH-d) activity was investigated in the thoracic part of rat, rabbit and pheasant spinal cords. Histochemical method for visualization of NADPH-d was used in this study. The comparison between all spinal cord regions (laminae) in three experimental species revealed marked differences. Especially in the ventral horn, the presence of NADPH-d activity was different. While the pheasant ventral horn possessed number of scattered intensively stained neurons, the rat and rabbit showed no NADPH-d activity in this region. Pericentral area (lamina X), intermediate zone (lamina VII) and dorsal horn revealed the presence of NADPH-d positive neurons in all examinated species although they differed in the distribution of NADPH-d activity. In summary, it can be suggested that the observed differences in the presence and distribution of NADPH-d activity among species may reflect their different phylogenetic development. As a consequence, different NO function in spinal cord of various species can be presumed. (Fig. 10, Ref. 28.)
Kluchova
D
D
Dpt of Anatomy, LF UPJS, Srobarova 2, SK-040 01 Kosice, Slovakia. kluchova@hotmail.com
Pribula
J
J
Rybarova
S
S
Schmidtova
K
K
Miklosova
M
M
Lovasova
K
K
Dorko
F
F
D000818:Animals; D001717:Birds; D006651:Histocytochemistry; D009252:NADPH Dehydrogenase / Q000032:analysis*; D011817:Rabbits; D051381:Rats; D013045:Species Specificity; D013116:Spinal Cord / Q000166:cytology / Q000201:enzymology*
D009252:NADPH Dehydrogenase
Odlisnosti v lokalizácii NADPH-d pozitívnych neurónov v sivej hmote miechy jednotlivých druhov.