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Morfologiia. 2011;139(1):43-8.

[Changes of the tissues and of regional lymph nodes in rats with chronic inflammatory process treated with interleukin-2].

[Article in Russian]


The structure of Wistar rat subcutaneous adipose tissue and axillary (regional) lymph nodes (LN) was studied by the methods of light microscopy after the subcutaneous implantation of the fragments of silicone mammary implant in the area of right scapula in animals treated with interleukin-2 (IL-2). Subcutaneous implantation of sterile silicone plates to rats was found to induce chronic granulomatous inflammatory process with the formation of connective tissue capsule. Implants placement to rats treated with IL-2 resulted in the formation of a thicker capsule with the signs of sclerosis, fibrosis and hyialinosis; all the capsular structures were heavily infiltrated with macrophages, which contained phagocytozed silicone fragments. After the introduction of silicone implants, the volume of the capsule and connective tissue in the regional LN progressively increased, while after IL-2 treatment the intensity of sclerotic processes was significantly decreased. The relative area of lymphoid nodules without the germinal centers in LN sections was increased 1 month following the induction of chronic inflammatory process in rats treated with IL-2, but by 6 months the proportion of nodules both with or without germinal centers become less, as compared to the initial data.

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