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Biomedical subjects

H H Gunson

Publications and source records attributed to H H Gunson.

50 records · Page 3Linked to original sources
PubMed1972

The adverse effect of bromelin in anti-D quantitation using the AutoAnalyzer.

With eight of 32 sera significantly higher estimations of anti-D concentration were obtained when test cells premodified with bromelin were used instead of bromelin as a reagent added to the reaction manifold. With one serum the difference in estimation, using the two techniques, revealed a ten-fold discrepancy. The consequences of these findings are discussed in relation to the use of the AutoAnalyzer for the quantitation of anti-D.

Autoanalysis↗
PubMed1970

Primary immunization of Rh-negative volunteers.

To determine the best method for the production of high-titre anti-D serum primary immunization was carried out in two groups of Rh-negative male volunteers with washed group O R(2)R(2) cells. The first group of six men were given 5 ml. of packed cells, and the second group of five men were given 0.5 ml. of packed cells, in each instance by intravenous injection. Only one individual in each group failed to develop anti-D following the primary inoculation, and it has been concluded that 0.5 ml. of packed R(2)R(2) cells is probably a satisfactory dose for this purpose.There was a delay of several weeks before anti-D could be shown to have developed. The initial antibodies which appeared in the serum comprised 7S gammaG immunoglobulins, with, in about half the cases, a minor 19S gammaM component.

Antibody Formation↗
PubMedDate not supplied

Methods of assessing factor VIII content of stored fresh frozen plasma intended for preparation of factor VIII concentrates.

Minimally destructive methods were sought to assess the factor VIII content of fresh frozen plasma intended for large-scale fractionation and stored in five-liter polyethylene packs after pooling approximately 23 plasma donations. Although factor VII distribution in the frozen pack was not perfectly homogenous, a central "core" through the frozen pack gave a representative sampel of the entire contents of the pack. Coring was compared with other methods of pack sampling before large-scale cryoprecipitation. The survival of factor VIII was studied in three grades of stored plasma which had been separated and frozen within 4 hours, 8 hours, and 18 hours of blood donation. Plasma frozen after overnight storage of blood is a satisfacory starting material for the preparation of factor VIII and factor IX concentrates.

Blood Banks↗