OBJECTIVE: To evaluate the effects of allogeneic hematopoietic stem cell transplantation (allo-HSCT) on the brains of persons with and without multiple sclerosis (MS) by means of postmortem histopathological examination. DESIGN: Postmortem histopathology, case studies, and case-control studies. Patients Four patients with MS who died at a median of 4.5 months (range, 3-9 months) after allo-HSCT for a concomitant hematologic malignant neoplasm; 5 patients without MS who died at a median of 10.0 months (1-29 months) after allo-HSCT; and 5 control subjects without MS who did not undergo allo-HSCT. SETTING: Referral centers. Intervention Allogeneic hematopoietic stem cell transplantation. MAIN OUTCOME MEASURES: Morphological features and immunohistochemical features, including the quantitative measures of chronic inflammatory cells. RESULTS: Demyelinating and inflammatory activities of MS persisted after allo-HSCT in all of the patients with MS. Active and chronic active MS lesions exhibited significantly higher numbers of CD3+ T cells and CD8+ cytotoxic T cells and significantly higher scores of CD68+ microglia/macrophages than did chronic inactive lesions or normal-appearing white matter. The normal-appearing brains of allo-HSCT recipients who did not have MS were found to have significantly higher numbers of CD3+ T cells and CD8+ cytotoxic T cells and higher scores of CD68+ microglia/macrophages compared with the controls; however, no demyelination was identified in these non-MS samples. CONCLUSION: Allo-HSCT fails to halt the demyelination and inflammation of MS.
OBJECTIVE: To evaluate the effects of allogeneic hematopoietic stem cell transplantation (allo-HSCT) on the brains of persons with and without multiple sclerosis (MS) by means of postmortem histopathological examination. DESIGN: Postmortem histopathology, case studies, and case-control studies. Patients Four patients with MS who died at a median of 4.5 months (range, 3-9 months) after allo-HSCT for a concomitant hematologic malignant neoplasm; 5 patients without MS who died at a median of 10.0 months (1-29 months) after allo-HSCT; and 5 control subjects without MS who did not undergo allo-HSCT. SETTING: Referral centers. Intervention Allogeneic hematopoietic stem cell transplantation. MAIN OUTCOME MEASURES: Morphological features and immunohistochemical features, including the quantitative measures of chronic inflammatory cells. RESULTS: Demyelinating and inflammatory activities of MS persisted after allo-HSCT in all of the patients with MS. Active and chronic active MS lesions exhibited significantly higher numbers of CD3+ T cells and CD8+ cytotoxic T cells and significantly higher scores of CD68+ microglia/macrophages than did chronic inactive lesions or normal-appearing white matter. The normal-appearing brains of allo-HSCT recipients who did not have MS were found to have significantly higher numbers of CD3+ T cells and CD8+ cytotoxic T cells and higher scores of CD68+ microglia/macrophages compared with the controls; however, no demyelination was identified in these non-MS samples. CONCLUSION: Allo-HSCT fails to halt the demyelination and inflammation of MS.
Authors: Jayden A Smith; Alexandra M Nicaise; Rosana-Bristena Ionescu; Regan Hamel; Luca Peruzzotti-Jametti; Stefano Pluchino Journal: Front Cell Dev Biol Date: 2021-07-09
Authors: Robert P Weinberg; Vera V Koledova; Kirsten Schneider; T G Sambandan; Adlai Grayson; Gal Zeidman; Anastasia Artamonova; Ravigadevi Sambanthamurthi; Syed Fairus; Anthony J Sinskey; ChoKyun Rha Journal: Sci Rep Date: 2018-11-06 Impact factor: 4.379