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Allogeneic haematopoietic stem-cell transplantation for children with refractory systemic juvenile idiopathic arthritis and associated lung disease: outcomes from an international, retrospective cohort study.

Lancet Rheumatol

December 2024

Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Pharming Healthcare, Warren, NJ, USA. Electronic address:

Background: Systemic juvenile idiopathic arthritis-related lung disease (sJIA-LD) is a severe complication in patients with treatment-refractory systemic juvenile idiopathic arthritis (sJIA). The objective of this study was to evaluate the effect of allogeneic haematopoietic stem-cell transplantation (HSCT) in a cohort of children with sJIA-LD.

Methods: This international, retrospective cohort study was performed in nine hospitals across the USA and Europe in children with sJIA-LD who had received allogeneic HSCT.

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Clinical relevance of feto-maternal microchimerism in (hematopoietic stem cell) transplantation.

Semin Immunopathol

December 2024

Division of Pediatric Stem Cell Transplantation and Immunology, Clinic of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany.

Toleration of a semi-allogeneic fetus in the mother's uterus as well as tolerance after allogeneic hematopoietic stem cell transplantation (HSCT) appear to share some immunologic concepts. The existence of microchimeric cells, and the original idea of a bidirectional cell trafficking between mother and child during pregnancy have been known for decades. Today, origins and mechanisms of persistence of microchimeric cells are intensively being elucidated.

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Background: To overcome organ shortage during transplantation, interspecies organ generation via blastocyst complementation has been proposed, although not yet in evolutionarily distant species. To establish high levels of chimerism, low chimerism is required early in development, followed by high chimerism, to effectively complement the organ niche. Very few human cells are expected to contribute to chimerism in heterologous animals.

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Egg donation and gestational surrogacy: Pregnancy is riskier with an unrelated embryo.

Early Hum Dev

September 2024

Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02136, United States of America. Electronic address:

Modern medicine has revolutionized family planning. Remarkably, women can carry to term embryos with whom they share no genetic connection, a feat made possible through egg donation and/or gestational surrogacy. Our reproductive systems evolved to accommodate embryos that are 50% related to the carrier, not 0% related.

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The α-emitter At deposits a high amount of energy within a few cell diameters, resulting in irreparable DNA double-strand breaks while minimizing off-target toxicity. We investigated the use of the At-labeled anti-CD45 monoclonal antibody (mAb) At-CD45-B10 as a nonmyeloablative conditioning regimen for dog-leukocyte-antigen-haploidentical hematopoietic cell transplantation. Seventeen healthy dogs were injected with either a 0.

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