[Pathomorphology of adrenergic and cholinergic structures of sympathetic nerve ganglia in experimental burn injuries].

Changes in adreno- and cholinergic structures of sympathetic nerve ganglia (superior cervical, stellate, and splanchnic ganglia of the solar plexus) were studied in 15 male white rats aged 5-7 months, b. m. 200-250 g, 3, 7, and 11 days after burn injury (Stages IIIA, IIIB, involving 20-25% of body surface) and in 5 reference animals. The sections were treated in 2% glyoxylic acid solution and by the Karnovsky-Roots technique. Reduced catecholamine concentrations were revealed in sympathetic nerve ganglia neurons in the early periods after burn injury; the mediator reserves are recovered to a certain measure in later periods after thermal injury. The detected shifts in the sympathetic nerve ganglia neurons correlate with the detected shifts in the cardiovascular system.