Morphological Characteristics of the Trigeminal Node of Rats When Cryopreserved Placenta Is Introduced

Abstract

Cryopreserved placenta preparations have a unique composition of biologically active substances, which determines their multifaceted effect. The aim of our study was to investigate the morphological features of the trigeminal node of rats when cryopreserved placenta was injected.
 The conducted experimental study showed that a single subcutaneous injection of cryopreserved placenta causes a reaction of the vessels of the microcirculatory bed of the trigeminal node of rats in the first two weeks of observation in the form of an expansion of the diameter of arterioles, capillaries and venules and an increase in blood filling, which indicates the stimulating effect of the components of the fetoplacental complex on the microcirculatory bed. The most pronounced phenomena were observed on the 7th day.
 After transplantation of the cryopreserved placenta, the neurocytes of the trigeminal node had a large, well-defined light nucleus, well-defined cytoplasm, with deep chromatophilic substance, there were dark, smaller cells with dispersed Nissl substance, satellite cells, and nerve fibers remained intact during all observation periods.
 The obtained data confirm the trophic effect of drugs of the fetoplacental complex. Our experimental study showed that a single subcutaneous injection of cryopreserved placenta causes a reaction of the vessels of the microcirculatory bed of the trigeminal node of rats in the first two weeks of observation in the form of an expansion of the diameter of arterioles, capillaries and venules and an increase in blood filling. The most pronounced phenomena were observed on the 7th day. The obtained data indicate the stimulating effect of the components of the fetoplacental complex on the microcirculatory channel.
 After transplantation of the cryopreserved placenta, neurocytes, satellite cells, and nerve fibers remained intact during all observation periods.