{"title":"Membrane damage produced by parvovirus B19 tags erythrocytes as senescent and is an aggravating cause of virus-triggered anemias","authors":"Josefina Valadez-García , Iris Ashanty Soto-Valerio , Maximiliano Cueva-Berea , Guadalupe Trinidad Zavala-Padilla , Ismael Bustos-Jaimes","doi":"10.1016/j.mehy.2024.111524","DOIUrl":null,"url":null,"abstract":"<div><div>Parvovirus B19 (B19V) is the causative agent of <em>erythema infectiosum</em> and other diseases, including aplastic anemia in individuals with underlying hemolytic disorders such as sickle cell disease, spherocytosis or thalassemia. It has been well-established that B19V affects the development of red blood cells (RBC) by infecting erythroid progenitor cells (EPC) in the bone marrow. The first step in B19V infection is the binding of the virion to the glycosphingolipid (GSL) globoside (Gb4) on the EPC surface and temporarily stopping erythropoiesis. Although this infection is tolerated well by healthy patients, it can lead to severe aplastic crises in anemia patients. Gb4 is also the most abundant neutral glycolipid in the erythrocyte membrane. It has been documented that B19V and its virus-like particles (VLP) produce hemagglutination of RBCs. We hypothesized that B19V binding to the RBC membrane must induce changes impairing its function and reducing the cell’s half-life, being an aggravating cause of anemias produced by B19V. Here, we present optic and electronic microscopy evidence of morphological changes on the surface of the RBC produced by the presence of B19V VLP, supporting this hypothesis.</div></div>","PeriodicalId":18425,"journal":{"name":"Medical hypotheses","volume":"194 ","pages":"Article 111524"},"PeriodicalIF":2.1000,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Medical hypotheses","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0306987724002676","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MEDICINE, RESEARCH & EXPERIMENTAL","Score":null,"Total":0}
引用次数: 0
Abstract
Parvovirus B19 (B19V) is the causative agent of erythema infectiosum and other diseases, including aplastic anemia in individuals with underlying hemolytic disorders such as sickle cell disease, spherocytosis or thalassemia. It has been well-established that B19V affects the development of red blood cells (RBC) by infecting erythroid progenitor cells (EPC) in the bone marrow. The first step in B19V infection is the binding of the virion to the glycosphingolipid (GSL) globoside (Gb4) on the EPC surface and temporarily stopping erythropoiesis. Although this infection is tolerated well by healthy patients, it can lead to severe aplastic crises in anemia patients. Gb4 is also the most abundant neutral glycolipid in the erythrocyte membrane. It has been documented that B19V and its virus-like particles (VLP) produce hemagglutination of RBCs. We hypothesized that B19V binding to the RBC membrane must induce changes impairing its function and reducing the cell’s half-life, being an aggravating cause of anemias produced by B19V. Here, we present optic and electronic microscopy evidence of morphological changes on the surface of the RBC produced by the presence of B19V VLP, supporting this hypothesis.
期刊介绍:
Medical Hypotheses is a forum for ideas in medicine and related biomedical sciences. It will publish interesting and important theoretical papers that foster the diversity and debate upon which the scientific process thrives. The Aims and Scope of Medical Hypotheses are no different now from what was proposed by the founder of the journal, the late Dr David Horrobin. In his introduction to the first issue of the Journal, he asks ''what sorts of papers will be published in Medical Hypotheses? and goes on to answer ''Medical Hypotheses will publish papers which describe theories, ideas which have a great deal of observational support and some hypotheses where experimental support is yet fragmentary''. (Horrobin DF, 1975 Ideas in Biomedical Science: Reasons for the foundation of Medical Hypotheses. Medical Hypotheses Volume 1, Issue 1, January-February 1975, Pages 1-2.). Medical Hypotheses was therefore launched, and still exists today, to give novel, radical new ideas and speculations in medicine open-minded consideration, opening the field to radical hypotheses which would be rejected by most conventional journals. Papers in Medical Hypotheses take a standard scientific form in terms of style, structure and referencing. The journal therefore constitutes a bridge between cutting-edge theory and the mainstream of medical and scientific communication, which ideas must eventually enter if they are to be critiqued and tested against observations.