Hereditary elliptocytosis with protein band 4.1 deficiency in the dog.
نویسندگان
چکیده
A dog with persistent elliptocytosis was studied. The dog had membrane protein band 4.1 deficiency, microcytosis, shortened erythrocyte lifespan, increased osmotic sensitivity, and a mild glutathione deficiency. Erythrocyte deformability and membrane stability were adversely effected. The dog's parents had decreased band 4.1, decreased stability, and some elliptocytosis. This disorder in dogs closely resembles human patients with band 4.1 deficiency and should provide a valuable animal model to study the erythrocyte membrane cytoskeleton.
منابع مشابه
A molecular study of heterozygous protein 4.1 deficiency in hereditary elliptocytosis.
Genomic DNA from five kindreds and two individuals with hereditary elliptocytosis [HE(4.1+)] and a partial deficiency of protein 4.1 [HE(4.1+)] was extracted and probed with a cDNA for protein 4.1. When using a fragment of the cDNA that encompassed the coding region of the gene, two restriction fragment length polymorphisms segregating with protein 4.1 deficiency were found in one kindred when ...
متن کاملA variant of erythrocyte membrane skeletal protein band 4.1 associated with hereditary elliptocytosis.
A family comprising three patients (a mother and two children) with mild hereditary elliptocytosis was studied. Each patient had prominent elliptocytosis, reduced red cell deformability, and normal erythrocyte thermal sensitivity. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) of the erythrocyte membranes in each patient showed decreased levels of band 4.1 (approximately h...
متن کاملAn isoform-specific mutation in the protein 4.1 gene results in hereditary elliptocytosis and complete deficiency of protein 4.1 in erythrocytes but not in nonerythroid cells.
Multiple protein 4.1 isoforms are expressed in a variety of tissues through complex alternative pre-mRNA splicing events, one function of which is to regulate use of two alternative translation initiation signals. Late erythroid cells express mainly the downstream initiation site for synthesis of prototypical 80-kD isoforms; nonerythroid cells in addition use an upstream site to encode higher m...
متن کاملDistinct variants of erythrocyte protein 4.1 inherited in linkage with elliptocytosis and Rh type in three white families.
Hereditary elliptocytosis is a heterogeneous disorder resulting from defects in the erythrocyte membrane skeleton. Although some cases of elliptocytosis result from defects in spectrin, the specific structural abnormality has yet to be identified in the majority of cases. Protein 4.1 plays an essential role in erythrocyte membrane physiology, and deficiencies have been implicated in only a few ...
متن کاملA shortened variant of red cell membrane protein 4.1.
In a healthy 32-yr-old woman with normal red cell morphology, a shortened variant of cytoskeletal membrane protein 4.1 is described at the heterozygous state. One haploid set of protein 4.1 migrates below protein 4.2 and displays a reduction in mass of approximately 8500 with regard to the normal haploid set. The shortening corresponds to a deletion of about 75 amino acids and concerns both sub...
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ورودعنوان ژورنال:
- Blood
دوره 61 2 شماره
صفحات -
تاریخ انتشار 1983