Persistent c-fos expression and NADPH-d reactivity in the medulla and the lumbar spinal cord in rat with short-term peripheral anosmia.
Here we examine hypothesis that short-term peripheral ZnSO(4)-induced anosmia can produce effects on c-fos expression within spinal cord and caudal medulla in male Wistar rats (n=4). Fos-like-immunoreactive cells revealed by avidin-biotin-peroxidase method show a significant bilateral increase in the nucleus proprius (layers 3 and 4) and medial part of layers 5 and 6. In substantia gelatinosa (layer 2(i)) and area 10 Fos-positive neurons were intermixed together with nicotin-amide adenine dineucleotide phosphate-diaphorase (NADPH-d)-reactive cells. Short-term anosmia enhanced c-fos expression in ventral horn (layers 7 and 8), ventrolateral segment and dorsal part of the spinal trigeminal nuclei. In anosmic rats varicose fibres and numerous NADPH-d-stained neurons were present in the gelatinous layer of the spinal trigeminal nucleus caudalis, and a separate population of Fos-positive cells was detected within this layer. Nucleus tractus solitaris also contained a few NADPH-d-reactive, medium sized neurons intermixed with Fos-immunoreactive cells.
Centre for Physiology and Biochemical Research, Cheshskaya Street 6-5, 01042, Kiev, Ukraine. centre@tsua.net
A V
AV
Kalueff
V A
VA
Maisky
A I
AI
Pilyavskii
N E
NE
Makarchuk
D000818:Animals; D000870:Anterior Horn Cells / Q000737:chemistry / Q000201:enzymology*; D001007:Anxiety / Q000378:metabolism; D006120:Grooming / Q000502:physiology; D008159:Lumbar Vertebrae; D008297:Male; D008526:Medulla Oblongata / Q000737:chemistry / Q000201:enzymology*; D009252:NADPH Dehydrogenase / Q000032:analysis / Q000378:metabolism*; D000857:Olfaction Disorders / Q000378:metabolism*; D020671:Posterior Horn Cells / Q000737:chemistry / Q000201:enzymology; D016760:Proto-Oncogene Proteins c-fos / Q000032:analysis / Q000096:biosynthesis* / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D012903:Smell / Q000502:physiology
D016760:Proto-Oncogene Proteins c-fos; D009252:NADPH Dehydrogenase