title: [Five cases of hereditary high red cell membrane phosphatidylcholine hemolytic anemia in three families].
abstract: Five cases of hereditary high red cell membrane phosphatidylcholine hemolytic anemia in three families were described. All cases were clinically manifested by jaundice and splenomegaly. Hemolysis was evident from indirect hyperbilrubinemia, reticulocytosis and decrement of serum haptoglobin. Red blood cells showed morphological abnormalities such as poikylocytosis, anisocytosis and target cells on blood smears. Both direct and indirect Coombs' tests were negative. Ham test, sugar water test and hemoglobin electrophoresis showed no abnormalities. Osmotic fragility test showed decreased membrane fragility. Lipid analysis of red cell membrane showed increment of phosphatidylcholine content and decrement of sphingomyelin content, although plasma lipids were essentially normal. Influx and efflux of sodium through the red cell membrane were both increased. Splenectomy was performed without effect on one patient and the mother of other patients.
authors.affiliation: Department of Medicine, Fujita Health University School of Medicine. Aichi, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Wakita
authors.forename: T
authors.initials: T
authors.lastname: Matsui
authors.forename: M
authors.initials: M
authors.lastname: Tsuzuki
authors.forename: T
authors.initials: T
authors.lastname: Nomura
authors.forename: H
authors.initials: H
authors.lastname: Miyazaki
authors.forename: H
authors.initials: H
authors.lastname: Kojima
authors.forename: F
authors.initials: F
authors.lastname: Maruyama
authors.forename: M
authors.initials: M
authors.lastname: Okamoto
authors.forename: T
authors.initials: T
authors.lastname: Ino
authors.forename: K
authors.initials: K
authors.lastname: Ezaki
authors.forename: T
authors.initials: T
authors.lastname: Sugihara
authors.forename: A
authors.initials: A
authors.lastname: Kanzaki
authors.forename: Y
authors.initials: Y
authors.lastname: Yawata
authors.forename: M
authors.initials: M
authors.lastname: Hirano
mesh_terms: D000328:Adult; D000745:Anemia, Hemolytic, Congenital / Q000097:blood / Q000235:genetics*; D004910:Erythrocyte Membrane / Q000378:metabolism*; D005192:Family Health; D006801:Humans; D008297:Male; D008875:Middle Aged; D010713:Phosphatidylcholines / Q000097:blood*; D012964:Sodium / Q000378:metabolism; D013156:Splenectomy
chemical_list: D010713:Phosphatidylcholines; D012964:Sodium