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Nano-Delivery Revolution: Harnessing Mesenchymal Stem Cell-Derived Exosomes' Potential for Wound Healing.
Biomedicines
December 2024
BioExIn, Delhi 110032, India.
Stem cell transplantation has proven effective in treating acute and chronic wounds, but its limitations, such as low cellular viability and the need for specialized transportation, highlight the necessity for alternative approaches. This review explores the potential of engineered exosomes, containing identified miRNAs/peptides, as a more stable and efficient cell-free therapy for regenerative medicine, particularly in wound healing. The discussion emphasizes the benefits of exosomes, including their stability, reduced damage, and consistent biological activity, paving the way for innovative applications like lyophilized exosomes, mist spray delivery, and exosome-based scaffolds.
View Article and Find Full Text PDFAcanthamoeba Infection in a Hematopoietic Cell Transplant Recipient: Challenges in Diagnosis, Management, and Source Identification.
Transpl Infect Dis
December 2024
Transplant Infectious Diseases, Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research, NIAID, NIH, Bethesda, Maryland, USA.
We report a case of Acanthamoeba infection in an HCT recipient with steroid-refractory GVHD. We highlight the multiple challenges that free-living ameba infections present to the clinician, the clinical laboratory, transplant infectious disease for review, hospital epidemiology if nosocomial transmission is considered, and public health officials, as exposure source identification can be a significant challenge. Transplant physicians should include Acanthamoeba infections in their differential diagnosis of a patient with skin, sinus, lung, and/or brain involvement.
View Article and Find Full Text PDFIMPACT OF REPEAT HLA MISMATCHES ON KIDNEY GRAFT SURVIVAL: A CONTEMPORARY COLLABORATIVE TRANSPLANT STUDY (CTS) ANALYSIS.
Am J Transplant
December 2024
Institute of Immunology, Heidelberg University Hospital, Heidelberg, Germany.
Repeat HLA mismatches (RMM) have been historically associated with an increased risk of graft loss after repeat kidney transplantation, in particular HLA-DR RMM in sensitized recipients. As routine use of sensitive assays can at present prevent the transplantation of RMM in hosts with donor-specific antibodies, we hypothesized that RMM would no longer be associated with graft loss. We performed a registry analysis of the Collaborative Transplant Study database including 6711 patients who received a second kidney transplant (2 KT) between 2010 and 2021, with at least one HLA-A, -B or -DR mismatch.
View Article and Find Full Text PDFNovel Aspects of Immunogenetics and Post-Transplant Events in Kidney Transplantation.
Transpl Int
December 2024
Finnish Red Cross Blood Service, Helsinki, Finland.
HLA typing and matching have been crucial in kidney transplantation, but methods for assessing tissue histocompatibility have advanced significantly. While serological-level HLA typing remains common, it captures only a small fraction of true HLA variation, and molecular matching is already replacing traditional HLA matching. Recent studies have expanded our understanding of genetic tissue compatibility beyond HLA loci.
View Article and Find Full Text PDFTransduction of Human Fetal Liver Hematopoietic CD34+ Stem and Progenitor Cells into a Cell Line by Enhancing Telomerase Activity.
Int J Hematol Oncol Stem Cell Res
October 2024
Sri Sri Institute for Advanced Research (SSIAR), Ved Vignan Maha Vidhya Peeth (VVMVP), Bangalore, India.
: Human fetal liver hematopoietic stem cells have proven potential as therapeutics but lack extensive research due to their limited supply. Even expanded fetal liver hematopoietic stem cells enter senescence or lose their self-renewal capacity after a few days in culture. The present study aimed to obtain a homogeneous and persistent supply of hematopoietic stem cells from the fetal liver by establishing a cell line through immortalization of cells by enhancing telomerase activity.
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