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Immunological profile of patients with multiple sclerosis
Šubjak, David ; Fišerová, Anna (advisor) ; Růžičková, Šárka (referee)
Immunological profile of multiple sclerosis patients Abstrakt Multiple sclerosis is an autoimmune neurodegenerative disease affecting predominantly the white matter of the CNS and the spinal cord. The mechanism of disease progression is not yet fully understood. In this study we focused on a comparison of selected immunological markers between patients with multiple sclerosis who were naïve newly diagnosed, subsequently treated with Avonex (IFNβ1a) and healthy donors. The T cells (particulary cytotoxic CD8+ T cells) are the major population involved in pathogenesis of MS causing the demyelization of axons. Subpopulation of CD161+ Th cells has a potential to be very important in this process. We focused on the role of NK cells phenotype and function in autoimmune response of patients and their changes during the therapeutic intervention. Using flow cytometry we analyzed the distribution of NK, NKT, T cells and monocytes with special regard to the expression of CD161 and NKG2D molecules on their surface. We observed increase counts of CD161+ cells in subpopulations NK CD56bright , NK CD56dim , Th, Tc CD8bright , Tc CD8dim and decrease counts of NKG2D+ cells in subpopulations NK CD56bright , NK CD56dim , NKT, Th, Tc CD8bright , Tc CD8dim and monocytes. The decreased cytotoxic activity of NK cells in naïve MS...
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Immunological profile of patients with multiple sclerosis
Šubjak, David ; Fišerová, Anna (advisor) ; Růžičková, Šárka (referee)
Immunological profile of multiple sclerosis patients Abstrakt Multiple sclerosis is an autoimmune neurodegenerative disease affecting predominantly the white matter of the CNS and the spinal cord. The mechanism of disease progression is not yet fully understood. In this study we focused on a comparison of selected immunological markers between patients with multiple sclerosis who were naïve newly diagnosed, subsequently treated with Avonex (IFNβ1a) and healthy donors. The T cells (particulary cytotoxic CD8+ T cells) are the major population involved in pathogenesis of MS causing the demyelization of axons. Subpopulation of CD161+ Th cells has a potential to be very important in this process. We focused on the role of NK cells phenotype and function in autoimmune response of patients and their changes during the therapeutic intervention. Using flow cytometry we analyzed the distribution of NK, NKT, T cells and monocytes with special regard to the expression of CD161 and NKG2D molecules on their surface. We observed increase counts of CD161+ cells in subpopulations NK CD56bright , NK CD56dim , Th, Tc CD8bright , Tc CD8dim and decrease counts of NKG2D+ cells in subpopulations NK CD56bright , NK CD56dim , NKT, Th, Tc CD8bright , Tc CD8dim and monocytes. The decreased cytotoxic activity of NK cells in naïve MS...
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Morfocytometric investigation of haemocytes in comparative hematology
ŠUBJAK, David
Standard haematological procedures in preclinical toxicity studies are mostly carried out on mammals, more recent haematotoxicological models represent invertebrates because they can be used in the screening of myelotoxicity. In the present study, we examined haemocytes of Culex pipiens as a new potential alternative haematological in vivo model. Preparations for microscopic analysis were made from the hemolymph stained by Pappenheim's method for overstriking morphology and by toluidin blue and AgNOR for overstriking nucleoles. Microscopic photos were processed by image analysis and size of cells, nuclei and nucleoli were evaluated. Six types of haemocytes were found: granulocytes, prohemocytes, spherulocytes, plasmatocytes, adipohemocytes and oenocytes. Thanks to image analysis we made a morfometric profile of each type of haemocytes and set the nucleolar coefficient. We described significant differences among prohemocytes, plasmocytes and oenocytes size. On the grounds of nucleoles size we divided haemocytes to next two significant groups. Image analysis seems to be very helpful for distinction among various haemocyte lines but we cant use it for generally separation without personal control thanks to presence of statistically significant findings for only some comparisons cell types.
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