The majority of de novo donor specific HLA antibodies (DSAs) in transplant patients are directed to HLA-DQ antigens, which consist of a heterodimer of alpha and beta chains. Although a heterodimer can theoretically be cis- or trans-encoded, the sensitizing forms generally appear to be forms. DSA to DQ trans-heterodimer has never been reported. We reviewed 360 post-kidney transplant recipients (transplant: 2002-2013; follow-up: 5.6±3.3years). DQ DSA was detected in 46 of 57 patients who developed DSA. DSA specificity was consistent with donor mismatched DQ trans-heterodimers in three patients: DQ2.5 (DQB1*02, DQA1*05), DQ2.3 (DQB1*02, DQA1*03), and DQ4.3 (DQB1*04, DQA1*03). Two of them eventually lost grafts (2 and 5years later) with allograft nephropathy. In conclusion, post-transplant patients may develop DSA to donor DQ trans-heterodimers. Further studies are warranted to determine the clinical significance of such DSAs.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.humimm.2015.09.004 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Association analysis of T and B-cell epitopes with humoral alloimmunisation in kidney transplantation: A Tunisian cohort study.
Hum Immunol
January 2025
Immunology department, Hedi Chaker Hospital, University of Sfax, Sfax, Tunisia.
Introduction: HLA matching is critical for successful kidney transplantation. This study aimed to investigate the impact of eplet mismatches and Predicted Indirectly Recognizable HLA Epitopes (PIRCHE-II) scores on the development of de novo donor-specific antibodies (dnDSA) and graft survival in a Tunisian cohort, characterized by a high prevalence of living donors and significant genetic diversity in HLA profiles.
Methods: This retrospective study included 112 adult kidney transplant recipients who underwent transplantation between 2012 and 2018.
Safety and efficacy of staged coiling followed by flow diverter in the treatment of ruptured intracranial aneurysms.
Neurosurg Rev
January 2025
Department of Neurointervention, The First Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, Henan, China.
To evaluate the safety and efficacy of staged coiling followed by flow diverter (FD) in the treatment of ruptured intracranial aneurysms(RIAs). A retrospective analysis was conducted on 20 patients with RIAs treated with staged coiling followed by FD at a single center, between April 2015 and September 2024. Patient demographics, aneurysm characteristics, clinical and imaging outcomes were reviewed.
View Article and Find Full Text PDFRenal Clear Cell Carcinoma Masquerading As Brain Arteriovenous Malformation: A Case Report and Review of the Literature.
Cureus
December 2024
Neurosurgery, Southmead Hospital, North Bristol NHS, Bristol, GBR.
Cerebral arteriovenous malformations (AVMs) are tangles of abnormal vessels with early arteriovenous (AV) shunting that can lead to intracerebral hemorrhage, seizures, neurologic deficit, or headache. To date, only a few cases of carcinomas metastasizing to pre-existing cerebral AVMs have been reported in the literature. However, renal clear cell carcinoma (RCC) brain metastases that exhibit early AV shunting, where AVM pathology is not present, are extremely rare.
View Article and Find Full Text PDFDeep Learning Models for Automatic Classification of Anatomic Location in Abdominopelvic Digital Subtraction Angiography.
J Imaging Inform Med
January 2025
Department of Radiology, UC Davis School of Medicine, University of California, Davis, 4860 Y Street, Suite 3100, Sacramento, CA, 95817-2307, USA.
Purpose: To explore the information in routine digital subtraction angiography (DSA) and evaluate deep learning algorithms for automated identification of anatomic location in DSA sequences.
Methods: DSA of the abdominal aorta, celiac, superior mesenteric, inferior mesenteric, and bilateral external iliac arteries was labeled with the anatomic location from retrospectively collected endovascular procedures performed between 2010 and 2020 at a tertiary care medical center. "Key" images within each sequence demonstrating the parent vessel and the first bifurcation were additionally labeled.
Children's executive functioning and health behaviors across pediatric life stages and ecological contexts.
J Behav Med
January 2025
Department of Counseling Psychology and Human Services, Prevention Science Institute, University of Oregon, Eugene, OR, USA.
Executive functioning (EF) has been linked to chronic disease risk in children. Health behaviors are thought to partially explain this association. The current cross-sectional study evaluated specific domains of EF and varied health behaviors in three pediatric life stages.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!