Microchimerism in female renal transplant recipients from male donors
| Autor: | Hiromi Hirai, Yoshiteru Fujimura, K Arai, Atsushi Aikawa, Akira Hasegawa, Nobuaki Hirayama, Toshihiko Goto, Takehiro Ohara, Toshihiko Kaneshige, M Yamashita |
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| Rok vydání: | 2014 |
| Předmět: |
Graft Rejection
Male Blood transfusion Urology medicine.medical_treatment Human leukocyte antigen Chimerism Polymerase Chain Reaction Sex Factors medicine Immune Tolerance Humans Kidney transplantation In Situ Hybridization Fluorescence B-Lymphocytes Transplantation Chimera Chromosomes Human Y medicine.diagnostic_test business.industry Microchimerism Immunosuppression medicine.disease Kidney Transplantation Tissue Donors Transplantation Immunology Acute Disease Chronic Disease Female business CD8 Fluorescence in situ hybridization |
| Zdroj: | International journal of urology : official journal of the Japanese Urological Association. 3 |
| ISSN: | 1442-2042 |
| Popis: | Microchimerism in 23 female renal transplant recipients from male donors was studied using nested polymerase chain reaction (nPCR) and fluorescence in situ hybridization (FISH) to detect Y-chromosome. nPCR was a sensitive and specific assay enabling a detection rate of 1/10(6) male/female cells, compared with a sensitivity of 1/10(2) by standard PCR (sPCR). None of the 23 patients with a male allograft demonstrated Y-chromosome using sPCR. In contrast, 1 3 (56.5%) patients demonstrated Y-chromosome with nPCR. Of 9 patients proven to have microchimerism by nPCR, only 3 also demonstrated Y-chromosome using FISH. The existence of B cells and CD8 cells in donor chimeric cells were proved by separation with Dynabeads class I and class II. Dynamic changes of microchimerism occurred in 4 of 5 patients. Four patients were proven to have microchimerism within a year of transplantation and the microchimerism later disappeared in 3, although the sequential change was variable in individual patients. There was no correlation between microchimerism and patients'clinical factors such as donor-specific blood transfusion, HLA matching, immunosuppression, past history of acute rejection and chronic rejection. The degree of microchimerism in renal transplant recipients was relatively low, and its existence did not seem to be compatible with long-term graft acceptance. However, further studies are required to elucidate the immunological mechanism of microchimerism, and it might be an important clue to immunological tolerance. |
| Databáze: | OpenAIRE |
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