NADPH-DIAPHORASE REACTIVITY IN THE VENTRAL HORN OF THE FELINE SPINAL CORD DURING ACUTE MUSCLE INFLAMMATION
Ye.P. Man’kovskaya1, A.V. Maznychenko1, N.O. Pil’kevych1, V.O. Maisky1, O.V. Vlasenko2, O.V. Dovgan’2
- O.O. Bogomoletz Institute of Physiology, NAS of Ukraine,
Kyiv;
- Pirogov National Medical University, MPH of Ukraine,
Vinnitsa
DOI: https://doi.org/10.15407/fz61.06.046
Abstract
The aim of this research was to reveal the changes in the
NADPH-d reactivity in the lumbal spinal cord (L6/L7) of
cats with unilateral acute myositis of the mm. gastrocnemiussoleusafter
intramuscular injections of carrageenan. The effect
of unilateral muscle inflammation was expressed in a significant
increase in the number of NADPH-d-reactive neurons in
ipsilateral and contralateral intermediate (lamina VII; 17,62 ±
2,7 and 20,67 ± 3,3) and medial (lamina VIII; 7,3 ± 1,9 and 6,0
± 2,1 respectively)zones of the ventral horns. However, a clear
decline of the reactive cells was recorded on the ipsilateral side
within the area around the central canal (lamina X). An increase
in the NADPH-d reactivity within the ventral horns on both
sides on the spinal cord and the induction of such reactivity
(contralaterally) in large multipolar neurons localized in the
dorsal part of the intermediate zone were revealed in cats with
unilateral acute muscle inflammation. It is hypothesized, that
during acute myositis, plastic changes in different layers of the
dorsaland ventral horns activate the processes of disinhibition
due to an increase in the number of NOS-containing/NADPHd-reactive
neurons in the spinal gray matter.
Keywords:
spinal cord; NADPH-d-reactive neurons; muscle inflammation; carrageenan; cats.
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