SOME REACTIONS OF THE REGIONAL LYMPH NODES OF RATS AFTER IMPLANTATION OF MULTIPOTENT STROMAL CELLS ADSORBED ON POLYHYDROXYALKANOATE INTO A BONE TISSUE DEFECT

I. V. Maiborodin; V. A Matveyeva; R. V. Maslov; N. V. Onopriyenko; I. V. Kuznetsova; G. A. Chastikin; A. A Anikeyev

doi:10.17816/morph.397632

Morphology ›› 2016, Vol. 149 ›› Issue (2) : 21 -26. DOI: 10.17816/morph.397632

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SOME REACTIONS OF THE REGIONAL LYMPH NODES OF RATS AFTER IMPLANTATION OF MULTIPOTENT STROMAL CELLS ADSORBED ON POLYHYDROXYALKANOATE INTO A BONE TISSUE DEFECT

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Abstract

The reactions of the regional lymph nodes, caused by implantation of the autologous multipotent stromal cells of bone marrow origin (AMSCBMO) to accelerate the healing of mandibular bone defect were studied by fluorescent microscopy in inbred male Wag rats aged 6 months (n=62). After the introduction of polyhydroxyalkanoate transplant containing adsorbed AMSCBMO with a transfected Green Fluorescent Protein (GFP) gene into a damaged bone area, the lymphoid nodules in submandibular lymph nodes demonstrated the appearance of numerous large macrophages containing multiple oval fluorescent inclusions in the cytoplasm. The number of these macrophages increased within 2 weeks after surgery and then began to decline. Apparently, AMSCBMO introduced in this way, were partially absorbed by macrophages. After destruction of the structures formed from AMSCBMO, the debris was also phagocytized by macrophages. In either case, these macrophages appeared in the germinal centers of lymphoid nodules in lymph nodes, where the induction of immune responses against DNA and GFP protein was probable.

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bone tissue / multipotent stromal cells of bone marrow origin / lymph nodes / macrophages

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I. V. Maiborodin, V. A Matveyeva, R. V. Maslov, N. V. Onopriyenko, I. V. Kuznetsova, G. A. Chastikin, A. A Anikeyev. SOME REACTIONS OF THE REGIONAL LYMPH NODES OF RATS AFTER IMPLANTATION OF MULTIPOTENT STROMAL CELLS ADSORBED ON POLYHYDROXYALKANOATE INTO A BONE TISSUE DEFECT. Morphology, 2016, 149(2): 21-26 DOI:10.17816/morph.397632

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