The imperfections of early technologies for assessment of human leukocyte antigen (HLA) antibody specificity have been resolved by solid phase micro bead assays, but this has revealed new uncertainties. The relationship between presence of antibody specific for a donor HLA molecule to graft damage and outcomes has had to be re-evaluated. Studies of protocol biopsies have identified a correlation between donor specific antibody and electron microscopy (EM) changes at three months, which do not predict chronic antibody mediated rejection, but that are predicted by EM changes seen on 12-month protocol biopsies. These intriguing results point to the plasticity of the renal endothelium in the earlier post-transplant months, as well as to the reality that the immune system interaction with the endothelium changes with time.
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PLoS Pathog
January 2025
Graduate Program in Immunology, Ann Arbor, Michigan, United States of America.
Neutrophils play key protective roles in influenza infections, yet excessive neutrophilic inflammation is a hallmark of acute lung injury during severe infections. Phenotypic heterogeneity is increasingly recognized in neutrophil populations; however, how functional variation in neutrophils between individuals determine the diverse outcomes of influenza remains unclear. To examine immunologic responses that may drive varying outcomes in influenza, we infected C57BL/6 (B6) and A/J mice with mouse-adapted influenza A virus A/PR/8/34 H1N1.
View Article and Find Full Text PDFAsian J Transfus Sci
September 2022
Department of Pharmaceutics, School of Pharmaceutical Sciences and Technology, Sardar Bhagwan Singh University, Dehradun, Uttarakhand, India.
Blood is a life saver in many emergencies like accidents or for the patients suffering from deadly diseases such as cancer and thalassemia. Conventionally, blood collection is done in five steps, i.e.
View Article and Find Full Text PDFAsian J Transfus Sci
November 2023
Department of Transfusion Medicine, Apollo Multispeciality Hospitals, Kolkata, West Bengal, India.
Background: Examples of group B red cells that react weakly or not at all with anti-B have been described. Subgroups of B such as B, B, B, and B are rare and are less frequently reported. We studied the frequency of subgroups of B in our healthy blood donor population and serologically characterized and differentiated these subgroups.
View Article and Find Full Text PDFAsian J Transfus Sci
August 2024
Department of Transfusion Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
Introduction: Hemoglobin (Hb) estimation in blood donors is conducted using capillary samples on portable hemoglobinometers, representing measurement methods in practice. The reference standard is conducted using a venous sample on a hematology analyzer, representing the mentor measurement method or the true value. The correction involves the calculation of the secondary adjustment factor (SAF) to mitigate the difference between the two values.
View Article and Find Full Text PDFAsian J Transfus Sci
September 2022
Department of Transfusion Medicine and Immunohaematology, St. John's Medical College, Bengaluru, Karnataka, India.
Background: Although ABO and RhD are the clinically significant blood group antigens that are routinely tested for, other blood group antigens may become important in multiply transfused patients due to risk of alloimmunization. Knowledge of antigen prevalence in a population is important in the context of alloimmunization and antigen matching. This study aims to do the same in a population of voluntary blood donors of a center in South India.
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