We present two distinct truncated variants of ankyrin associated with mild to moderate hereditary spherocytosis. Ankyrin Saint-Etienne 1 was manifested by an additional band located between bands 2.1 and 2.2. It was associated with a nonsense mutation in exon 39: TGG-->TGA; W1721X. Ankyrin Saint-Etienne 2 appeared as two faint bands underlining bands 2.1 and 2.2. It was associated with a nonsense mutation in exon 41: CGA-->TGA; R1833X. Overall ankyrin was diminished in splenectomized patients. Messenger RNAs Saint-Etienne 1 and 2 amounted to 20 and 37% of the total ankyrin mRNA, respectively. Ankyrin molecules truncated in their C-terminal region retain some ability to bind to the membrane whereas the bulk of nonsense mutations, located in more upstream regions, result in the mere disappearance of one haploid set of ankyrin. In the present cases, it was not possible to apportion the roles of ankyrin reduction and truncation in the pathogenesis of hereditary spherocytosis.
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http://dx.doi.org/10.1002/(sici)1096-8652(199805)58:1<36::aid-ajh7>3.0.co;2-1 | DOI Listing |
Minerva Anestesiol
January 2025
Department of Anesthesiology, Prof. Dr. Cemil Taşçıoğlu City Hospital, Istanbul, Türkiye.
Background: Clinical Hereditary Hemolytic Anemia (HAA) particularly Hereditary Spherocytosis (HS) encompasses diverse genetic disorders causing premature red blood cell destruction and intrinsic RBC defects. There's a pressing need for standardized diagnostic protocols tailored to the Asian population, particularly in Saudi Arabia, underscoring the significance of thorough blood biochemistry analysis.
Materials And Methods: A case-control prospective study was conducted at King Abdulaziz University, samples were obtained from King Fahad, hospital Jeddah, Saudi Arabia, serving a significant population, and blood samples from 27 patients meeting ethical criteria for HHA and HS.
Hematol Rep
January 2025
Children's Haematology and Cancer Centre, Mount Elizabeth Hospital, Singapore 228510, Singapore.
Background: Peripheral erythrophagocytosis appears to be a unique sign of acquired immune-mediated hemolytic anemia. It is said to be rare but its prevalence among patients with autoimmune hemolytic anemia has not been studied.
Methods: In this retrospective study from July 2014 to June 2024, the clinical and laboratory features, treatment and outcomes of children diagnosed with autoimmune hemolytic anemia were described.
Langmuir
January 2025
Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States.
In this work, we show how shape matters for the ordering of red blood cells (RBCs) at a water-air interface for both artificially rigidified and sphered cells as a model system for hereditary spherocytosis. We report enhanced long-range order for spherical RBCs over disk-shaped RBCs arising from the increased local ordering of spheres relative to disks. We show that rigidity has a greater effect on the radial distribution of spherical vs disk-shaped RBCs by slightly increasing the average distance between cells.
View Article and Find Full Text PDFTurk J Haematol
January 2025
Marmara University Faculty of Medicine, Department of Medical Genetics, İstanbul, Türkiye.
Objective: This study aims to determine the genotypic characteristics of Hereditary Spherocytosis (HS) patients in Turkiye and to examine the correlation between genotype and phenotype.
Materials And Methods: Herein we had 18 patients who were admitted to pediatric hematology outpatient clinic with hemolytic anemia, jaundice, cholelithiasis, and splenomegaly. According to the Eber's classification, the patients' clinical presentations were categorized as mild, moderate, and severe.
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