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Incidence of the Eight RH Types Among 179 White Puerto Ricans

1945; SAGE Publishing; Volume: 60; Issue: 2 Linguagem: Inglês

10.3181/00379727-60-15139

1535-3702

Mercedes Vda. de Torregrosa,

Diabetes and associated disorders

In the early work on the Rh factor, it was noticed that some bloods might be classified as Rh positive or Rh negative depending upon the human anti-Rh serum employed. It has been shown that human anti-Rh sera vary in their specificity, because they contain antibodies resulting from immunization to different Rh antigens. The anti-Rh sera that have thus far been found contain the following antibodies: anti-Rh0, anti-Rh′, anti-Rh″, anti-Rh′0 and anti-Rh″0. The anti-Rh0 sera correspond in specificity with anti-Rh sera obtained by immunizing animals with Macacus rhesus blood. The anti-Rh′0 contain two antibodies, anti-Rh0 and anti-Rhr′; this holds true for anti-Rh″0 containing antibody anti-Rh0 and anti-Rh″. Anti-Rh sera containing other antibody combinations have been found by British authors. Employing the 3 different varieties of human anti-Rh sera containing only one antibody, 8 Rh types have been defined by Wiener, Rh0, Rh1, Rh2, Rh1Rh2, Rh′, Rh″, Rh'Rh″, and Rh negative. Type Rh1 may also be designated as Rh′0, Type Rh0 as Rh″0, Type Rh1Rh2 as Rh′0Rh″0 to indicate the antibodies with which they react. (See Table I.) There are some bloods giving weak reactions with some of these three varieties of anti-Rh sera; they have been classified as intermediate Rh types Rh1(″), Rh2(′), Rh0(″), and Rh0(′) (Wiener). (Table II.) Murray, Race, and Taylor have also described a rare agglutinogen, Rhz. The distribution of the various Rh blood types among white individuals in New York City and among Negroes can be seen in Table III. With the data here presented, a study has been undertaken to determine the incidence of the Rh types among the white Puerto Rican population. Table III also shows the results of a study to determine the Rh types of 179 white individuals; the bloods have been obtained from blood donors and hospital employees coming from different parts of the island.