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Acquired Aplastic Anemia - Europe PMC

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Last Updated: 28 March 2022

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Leptin-mediated proinflammatory bone marrow environment in acquired aplastic anemia.

In a fatty marrow of AA, the enhanced adipogenesis of bone marrow-derived mesenchymal stem cell lines showed a dramatic adipogenesis. Myelodysplastic syndrome (BM) and hysterae -BM were among the higher leptin concentrations in AA-BM and healthy donors who were healthier donors. During the process of adipogenesis, AA-MSC could produce significant amounts of leptin. Wen, however, AA-MSC could produce significant amounts of leptin. The leptin receptor was also highly expressed on T cells in AA-BM in comparison to HD. In addition, leptin significantly accelerated the proliferation and activation of T cells in AA-BM. However, leptin effectively delayed the conversion of CD4 + CD25 T cells into CD4+ Foxp3+ T cells, which was surprising. tetin is the product of cell signaling pathway in T cells from AA patients, and we discovered that leptin could stimulate the STAT3 pathway. In summary, our results showed the high incidence of adipokine leptin in AA-BM, which created a proinflammatory environment for T cells in AA-BM by activating the JAK2/STAT3 pathway.

Source link: https://europepmc.org/article/MED/35217430


Comparison of porcine ALG and rabbit ATG on outcomes of HLA-haploidentical hematopoietic stem cell transplantation for patients with acquired aplastic anemia.

The aim of this review was to determine the effectiveness and safety of P-ALG and R-ATG in the conditioning regimen for patients with inherited aplastic anemia who underwent HLA-matched stem cell transplantation. Methods The retrospective examination of 91 patients with acquired aplastic anemia and haplo-HSCT at our center between January 2014 and December 2020 was retrospectively reviewed. P-ALG patients were in the P-ALG group, while sixty-three patients were in the R-ATG group. In the P-ALG and R-ATG groups, respectively, the median time was 11 versus 13 days for myeloid engraftment and 12. 5 versus 15 days for platelet engraftment. However, in the P-ALG group, the prevalence of cytomegalovirus infection and Epstein-Barr virus infection was significantly lower. Conclusion The P-ALG's efficacy and safety were similar to R-ATG in the context of haplo-HSCT for patients with acquired aplastic anemia.

Source link: https://europepmc.org/article/MED/35189891


Comparison of Hematopoietic Stem Cell Transplantation Outcomes Using Matched Sibling Donors, Haploidentical Donors, and Immunosuppressive Therapy for Patients With Acquired Aplastic Anemia.

We retrospectively reviewed the results of 387 consecutive patients with acquired aplastic anemia who underwent hematopoietic stem cell transplantation at our hospital with a fludarabine-based conditioning program from matched sibling donors or haploidentical donors and immunosuppressive therapy from 2014 to 2020. MSD-HSCT had a reduced risk of graft failure, grade II-IV acute graft versus host disease, and mild to moderate chronic GvHD, but there were also a high incidence of grade III-IV aGvHD and moderate to severe cGvHD in comparison with HID-HSCT. The OS rate in patients aged 40 years was still highly favorable for MSD-HSCT receipients compared to HID-HSCT receipients, although HID-HSCT recipients had similar OS but better FFS when following-up was longer than 14. 5 months compared to IST. MSD-HSCT was the frontline choice for patients with severe AA age 40 years, for patients with severe AA, 40 years, in conclusion, while HID-HSCT was as effective as an IST for patients without an MSD.

Source link: https://europepmc.org/article/MED/35178053


Diagnosis and Management of Acquired Aplastic Anemia: Consensus Statement of Indian Academy of Pediatrics.

Justification In India, there is a lack of consistency in treatment protocols for aplastic anemia, and many children are treated exclusively with supportive care due to the inability of hematopoietic stem cell transplantation, which is largely due to a lack of availability. Process Eminent national faculty members were invited to participate in the process of establishing a consensus statement in Hyderabad in July, 2016. One should wait for 3 to six months for the response survey and review of next-line therapy.

Source link: https://europepmc.org/article/MED/35105820


HLA-G-ILT2 interaction contributes to suppression of bone marrow B cell proliferation in acquired aplastic anemia.

I antigen G, a non-classic human leukocyte class I, interacts with several cell subsets, such as T cells and B cells. Soluble HLA-G values in bone marrow supernatants from AA patients were higher than controls, according to Soluble HLA-G measurements. B cells in bone marrow B cells were reduced, and the number of ILT2-expressing cells in CD19+ cells was increased in AA patients. In addition, the number of mature B cells in marrow B cells in AA patients was increased, while the number of pro-B+ pre-B cells was reduced. ILT2 in AA patients and pro-B plus pre-B cells was greater than in controls, but mature B cells expressing ILT2 did not differ significantly. The HLA-G-ILT2 molecule's therapeutic blockade may help to normalize bone marrow B cell proliferation.

Source link: https://europepmc.org/article/MED/35041051

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions