Rh Blood Grouping of the Individuals Born of Rh Negative Mother and Rh Positive Biological Father.

Unlike ABO antigens, Rh antigens are present only on Red Blood Cells (RBC), RhO(D) antigen is clinically the most important in the Rh system because it is highly antigenic. In India, as reported, 95% population is Rh positive whereas 05% is Rh Negative(approximately). Rh antibodies are the major cause3 of haemolytic disease of newborn (HDN) and lead to destruction of transfused Rh Positive red cells. A total number of 799 pregnant mothers having RhD Negative Blood Group (and also their husband possessing RhD Positive Blood Group) were surveyed. Out of the 799 babies born, 662 possessed RhD Positive and 137 possessed RhD Negative Blood Group. Besides this, twin babies born of RhD Negative mother and RhD Positive Biological Father were computed separately (Total No.of such mothers being 12). In case of twin delivery, the twins babies all possessed RhD Positive Blood Group. Calculation shows that about 17% of babies were RhD Negative and 83% were RhD Positive.

Digital dermatoglyphis in ABO, Rh blood groups.

Dermatoglyphics, the study of fingerprints are constant and individualistic. The ridge pattern depends upon cornified layer of epidermis as well as dermal papillae. This study was conducted to correlate between digital dermatoglyphics patterns in ABO, Rh blood groups and evaluates their significance. A total of 200 first year MBBS students with known blood groups from 2004 and 2005 batch of IGGMC, Nagpur were included in the study. Fingerprints were obtained by printing method. Parameters studied were arches, whorls, loops. It was concluded that, whorls were highest in B blood group and the difference was significant with O blood group. Loops were highest in O blood group and were significant with A, B, AB blood groups. Arches were highest in AB blood group and were statistically significant with B and O blood groups. Arches were higher in Rh negative blood group differing statistically with Rh positive blood group.

Risk estimation of ABO and Rho(D) incompatibility in persons with mono- and polyphyletic surnames in Monterrey, Mexico: comparison with other Mexican population

ABO and Rho(D) blood groups were determined in 3813 males and females affiliated with the Instituto Mexicano del Seguro Social (IMSS) who are residents of the Monterrey Metropolitan Area (MMA) in northeastern Mexico. They were selected by their monophyletic or polyphyletic surnames. The ABO and Rho(D) blood group phenotypes and gene frequencies were determined and based upon these, the risk of incompatibilities was estimated for both marriages (MI) and maternal-fetal incompatibility (MFI). These were compared with those estimated for other populations of residents in the MMA, and in other locations in Mexico, as well as with the two most important ancestral populations, Spanish and Tlaxcaltecan Mexican Indians, with the hypothesis that the percent of risk ABO and Rho(D) MI and MFI are greater in the population with monophyletic surnames than those with polyphyletic surnames. It was found that for persons with nomophyletic and polyphyletic surnames, as well as for the other populations in the MMA and other places in Mexico, their ABO and Rho(D) MI and MFI percent of risk are intermediate to the ones estimated for their ancestry. The percentages of MI and MFI are higher for the persons with monophyletic than for the ones with polyphyletic surnames, other populations from the MMA and those from other locations in Mexico. The risks are higher when the similarity with Spanish increases and are lower when their similarities with the mexican Indians increase

Inferencia de parametros estadisticos de los grupos sanguineos O A B y el factor Rh en el departamento de Cochabamba / Statistical parameters of blood groups O, A, B and factor Rh in Cochabamba

Se determinaron los grupos sanguineos O, A, B y el FactorRh en 20.611 personas del departamento de Cochabamba. Se tomaron muestras dirigidas de diversas areas geograficas habitadas por grupos poblacionales de distinta influencia racial y de areas autoctonas. Se hicieron comparaciones e inferencias de los datos obtenidos entre la poblacion de la ciudad de Cochabamba,las provincias, las poblaciones autoctonas (tribus de los Yuracares) y los datos proporcionados por el Autor A. Guyton en el libro Fisiologia Medica y el autor B., Houssay en el libro Fisiologia Humana. La distribucion de los datos finales es: Grupos sanguineos ( por ciento ): O:74.6; A:19.3; B:5,2; AB:0,9. Factor Rh: Positivo 98,9; Negativos: 1,1

Grupos sanguineos y el factor Rh en el Departamento de Cochabamba / Blood groups and the Rh factor in the Departament of Cochabamba

Se denominan los grupos sanguineos y factor Rh en 9.817 personas del Departamento de Cochabamba. El estudio que se constituye en la primera parte de uno mas amplio, tomo en cuenta diversas areas geograficas y de distinta influencia racial dentro del mencionado departamento. Los datos obtenidos senalan la siguiente distribucion para los grupos sanguineos 72,6// el O, 20,6// para el A, 5,8// para el B y 1// para el AB. En cuanto al factor RH positivo 98,3// y negativo 1,7//. Los resultados muestran significativas diferencias con la informacion referida a paises europeos y del norte del Continente Americano.