title: Assessment of clinical significance of anti-Ge in an untransfused man.
abstract: A 19-year-old, untransfused Melanesian man from Papua New Guinea was admitted to the hospital for repair of an atrial septal defect. His serum contained an alloantibody that reacted strongly on the indirect antiglobulin test and was identified as anti-Ge. Gerbich-negative blood was transfused following urgent surgery. A 51Cr red cell survival study performed 2 weeks after surgery yielded zero survival of Gerbich-positive cells after 24 hours. A monocyte-driven, antibody-dependent, cell-mediated cytotoxicity assay performed on both pretransfusion and posttransfusion serum samples and on concentrated serum showed less than 1 percent specific lysis of Gerbich-positive cells. This did not correlate with the indication of clinical significance predicted by the 51Cr study. Red cell adherence and phagocytosis, not evident in a monocyte monolayer assay using native serum, were demonstrable in 16 percent of monocytes by the use of concentrated serum.
authors.affiliation: Immunohematology Reference Laboratory, New South Wales Red Cross Blood Transfusion Service, Sydney, Australia.
authors.forename: H A
authors.initials: HA
authors.lastname: Pearson
authors.forename: V L
authors.initials: VL
authors.lastname: Richards
authors.forename: B R
authors.initials: BR
authors.lastname: Wylie
authors.forename: D
authors.initials: D
authors.lastname: Bruce
authors.forename: J M
authors.initials: JM
authors.lastname: Watt
authors.forename: D
authors.initials: D
authors.lastname: Wilkie
authors.forename: H
authors.initials: H
authors.lastname: Kronenberg
mesh_terms: D000328:Adult; D000920:Antibody-Dependent Cell Cytotoxicity; D001789:Blood Group Antigens / Q000276:immunology*; D002860:Chromium Radioisotopes; D004905:Erythrocyte Aging; D006801:Humans; D007518:Isoantibodies / Q000032:analysis*; D008297:Male; D009512:New Guinea
chemical_list: D001789:Blood Group Antigens; D002860:Chromium Radioisotopes; D007518:Isoantibodies