Publications by authors named "Rosa Chiriboga-Ponce"
Introduction: Identification of hepatitis B virus carriers in blood donors is imperative in order to avoid transmission of the disease via blood transfusion.
Objective: To determine if blood donors with positive results for serological markers HBsAg and anti-HBc were hepatitis B virus DNA carriers.
Methods: 12,745 samples were collected from six Ecuadorian blood banks and analyzed for HBsAg, anti-HBc and anti-HBs infectious markers by automated ELISA.
Introduction: The Diego blood group is an irregular blood system which has been involved in cases of hemolytic disease of the newborn and post transfusion reactions, in this system have been identified 22 erythrocyte antigens, among which the pair Di/Di is the most important because those have the most immunogenic potential.
Objective: This research aims to determine the frequency of antigen Dia and their respective alloantibody in the Ecuadorian population. Methods: It was performed a simple random sampling in the donor population, being later tested tube agglutination by the presence or absence of the antigen and its alloantibody Di applying gel agglutination technique.
Introduction: The presence of weak variants of blood type A represents a challenge in the practice of immunohematology for discrepancies in the time of the classification. It is common in blood banks to perform a forward and reverse typing for the purpose of confirming the blood type, but not all the people with a subgroup A2 have developed anti-A1 antibodies.
Objective: We present a descriptive, observational and transversal study that establishes the proportion of subgroups of A antigen with the analysis of manual tube technique and monoclonal antibodies like anti-A, anti-A1 (Dolichus biflorus lectins extract) and anti-H.