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9 March 2016 The morphological changes in lymphoid organs and peripheral blood indicators in rats after peroral administration of gold nanoparticles
A. B. Bucharskaya, S. S. Pakhomy, O. V. Zlobina, G. N. Maslyakova, O. V. Matveeva, I. O. Bugaeva, N. A. Navolokin, B. N. Khlebtsov, V. A. Bogatyrev, N. G. Khlebtsov, V. V. Tuchin
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Proceedings Volume 9709, Biophotonics and Immune Responses XI; 97090V (2016) https://doi.org/10.1117/12.2216045
Event: SPIE BiOS, 2016, San Francisco, California, United States
Abstract
The wide application of nanotechnologies in medicine requires the careful study of various aspects of their potential safety. The effects of prolonged peroral administration of gold nanoparticles on morphological changes in lymphoid organs and indicators of peripheral blood of laboratory animals were investigated in experiment. The gold nanospheres functionalized with thiolated polyethylene glycol sizes 2, 15 and 50 nm were administered orally for 15 days to outbred white rats at a dosage of 190 μg/kg of animal body weight. The standard histological and hematological staining were used for morphological study of lymphoid organs and bone marrow smears. The size-dependent decrease of the number of neutrophils and lymphocytes was noted in the study of peripheral blood, especially pronounced after administration of gold nanoparticles with size of 50 nm. The stimulation of myelocytic germ of hematopoiesis was recorded at morphological study of the bone marrow. The signs of strengthening of the processes of differentiation and maturation of cellular elements were found in lymph nodes, which were showed as the increasing number of immunoblasts and large lymphocytes. The quantitative changes of cellular component morphology of lymphoid organs due to activation of migration, proliferation and differentiation of immune cells indicate the presence of immunostimulation effect of gold nanoparticles.
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A. B. Bucharskaya, S. S. Pakhomy, O. V. Zlobina, G. N. Maslyakova, O. V. Matveeva, I. O. Bugaeva, N. A. Navolokin, B. N. Khlebtsov, V. A. Bogatyrev, N. G. Khlebtsov, and V. V. Tuchin "The morphological changes in lymphoid organs and peripheral blood indicators in rats after peroral administration of gold nanoparticles", Proc. SPIE 9709, Biophotonics and Immune Responses XI, 97090V (9 March 2016); https://doi.org/10.1117/12.2216045
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KEYWORDS
Lymphatic system
Blood
Gold
Nanoparticles
Bone
Spleen
Particles
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