Advanced Research in Spherocytosis

A special issue of Biomedicines (ISSN 2227-9059). This special issue belongs to the section "Molecular and Translational Medicine".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 1368

Special Issue Editors


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Guest Editor
Research and Development Centre, Regional Specialist Hospital, Kamienskiego 73a, 51-154 Wrocław, Poland
Interests: biomembrane biochemistry; biophysics and molecular biology; lateral organization of biological membrane and its role in cellular processes; membrane skeleton structure and function; liposomal technology; liposomes in targeted drug delivery
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Guest Editor
Department of Biotechnology, Faculty of Biological Sciences, University of Zielona Góra, Szafrana 1, 65-516 Zielona Góra, Poland
Interests: hereditary hemolytic anemias; erythrocyte membrane protein; erythropoiesis; biomembrane biochemistry; molecular biology; membrane skeleton structure and function; cell signaling

Special Issue Information

Dear Colleagues,

Hereditary spherocytosis (HS) is one of the most frequently inherited congenital hemolytic anemias in people of central or northern Europe. This erythrocyte membranopathy is a clinically, biochemically, and genetically heterogeneous disorder in which the presenting phenotype is anemia (which can range from fully compensated to transfusion-dependent), jaundice, reticulocytosis, splenomegaly, gallstones, several spherocytes in a peripheral blood smear, and decreased erythrocyte osmotic resistance. Advanced research on spherocytosis is providing valuable insights into its genetic basis, pathophysiology, and developing new diagnostic methods and treatments. The description of the pathophysiology is mainly concerned with the effects of abnormal erythrocyte membrane proteins on the mechanical properties and osmotic resistance of the cells, which is crucial for their functionality and lifespan. Particularly important is the development of advanced diagnostic tools that help distinguish spherocytosis from other forms of anemia and determine the severity of the disease. Molecular diagnosis of spherocytosis requires searching the nucleotide sequence of a few genes encoding red blood cell membrane proteins to identify mutations. The uniqueness of the genetic defects related to this condition significantly impedes diagnosis. The development of high-efficiency genome sequencing methods, particularly whole genome sequencing, enabled researchers to identify new variants and understand their impact on the HS. Although splenectomy remains the primary treatment of spherocytosis, alternative therapies are being sought to avoid performing spleen removal. Pharmacological strategies and, in the longer term, the potential of gene therapy to correct the genetic defects underlying HS appear promising. This special collection of review and experimental  articles should enrich our knowledge of recent advances in this particular field.

Prof. Dr. Aleksander F. Sikorski
Dr. Dżamila M. Bogusławska
Guest Editors

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Keywords

  • hereditary spherocytosis (HS)
  • hemolytic anemia
  • erythrocyte membrane skeleton structure and function
  • erythropoiesis
  • clinical phenotype
  • splenectomy
  • genetic diagnosis
  • NGS technologies
  • genotype-phenotype correlation

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Published Papers (1 paper)

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13 pages, 2078 KiB  
Article
Flow Cytometry as a New Accessible Method to Evaluate Diagnostic Osmotic Changes in Patients with Red Blood Cell Membrane Defects
by Asunción Beltrán, María Sánchez-Villalobos, Eduardo Salido, Carmen Algueró, Eulalia Campos, Ana Belén Pérez-Oliva, Miguel Blanquer and José M. Moraleda
Biomedicines 2024, 12(7), 1607; https://doi.org/10.3390/biomedicines12071607 - 19 Jul 2024
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Abstract
Hereditary spherocytosis (HS) is a membranopathy that impacts the vertical junctions between the cytoskeleton and the plasma membrane of erythrocytes. The gold standard method for diagnosing it is osmotic gradient ektacytometry (OGE). However, access to this technique is scarce. We have devised a [...] Read more.
Hereditary spherocytosis (HS) is a membranopathy that impacts the vertical junctions between the cytoskeleton and the plasma membrane of erythrocytes. The gold standard method for diagnosing it is osmotic gradient ektacytometry (OGE). However, access to this technique is scarce. We have devised a straightforward approach utilizing flow cytometry to quantify variations in an osmotic gradient, relying on FSC-H/SSC-H patterns. We studied 14 patients (9 pediatric, 5 adults) and 54 healthy controls (16 pediatric, 38 adults). After assessing the behavior of the samples in several osmolar gradients we selected for the study the 176, 308, and 458 mOsm/kg levels as hypo-osmolar, iso-osmolar, and hyper-osmolar references. We then selected the iso-osmolar point for assessment to determine its efficacy in discriminating between patient and control groups using a receiver operating characteristic curve. In the pediatric group, the area under the curve (AUC) was 1.0, indicating 100% sensitivity and 93.3% specificity. Conversely, in the adult group, the AUC was 0.98, with 80% sensitivity and 90.9% specificity. We introduce a method that is easily replicable and demonstrates high sensitivity and specificity. This technique could prove valuable in the diagnosis of spherocytosis. Full article
(This article belongs to the Special Issue Advanced Research in Spherocytosis)
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