Category: Bone Marrow

SARS-CoV-2 infection modifies the transcriptome of the megakaryocytes in the bone marrow

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Isabelle Allaeys, Guillaume Lemaire, Mickaël Leclercq, et. al. Blood Adv (2024) 8 (11): 2777–2789. Megakaryocytes (MKs), integral to platelet production, predominantly reside in the bone marrow (BM) and undergo regulated fragmentation within sinusoid vessels to release platelets into the bloodstream. Inflammatory states and infections influence MK transcription, potentially affecting platelet functionality. Notably, COVID-19 has been associated […]

New study reveals insights into COVID-19 antibody response durability

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University of Maryland School of Medicine, 2024 Researchers at the Institute of Human Virology (IHV) at the University of Maryland School of Medicine have published a new study in the Journal of Infectious Diseases investigating the antibody response following SARS-CoV-2 infection. Long-lived plasma cells are responsible for durable antibody responses that persist for decades after immunization or infection. For example, infection […]

Unraveling long COVID: Here’s what scientists who study the illness want to find out

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September 9, 2023, By Will Stone NPR Newsletter Researchers looking for root causes of long COVID work in the autopsy suite inside the Clinical Center at the National Institute of Health in Bethesda, Maryland. Valerie Plesch/Bloomberg via Getty Images For people suffering from long COVID’s often disabling symptoms, including intense fatigue, breathing troubles, cognitive issues and heart […]

Bone Marrow Suppression Secondary to the COVID-19 Booster Vaccine: A Case Report

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TAuthors: oral Shastri 1, Navkiran Randhawa 2, Ragia Aly 3, Masood Ghouse 3 PMID: 35210894PMCID: PMC8863340DOI: 10.2147/JBM.S350290 J Blood Med.  2022; 13: 69–74.Published online 2022 Feb 18. doi: 10.2147/JBM.S350290 Abstract As of September 2021, SARS-CoV-2 booster shots became widely available in the US to ensure continued protection against the virus. A temporal relationship has been previously reported between the first or second dose of the COVID-19 vaccine […]

Severe aplastic anemia after COVID-19 mRNA vaccination: Causality or coincidence?

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Authors: Shotaro Tabata 1, Hiroki Hosoi 2, Shogo Murata 1, Satomi Takeda 1, Toshiki Mushino 1, Takashi Sonoki 1PMID: 34920343 PMCID: PMC8668346I: 10.1016/j.jaut.2021.102782 J Autoimmun. 2022 Jan; 126: 102782.Published online 2021 Dec 14. doi: 10.1016/j.jaut.2021.102782 Abstract The development of various autoimmune diseases has been reported after COVID-19 infections or vaccinations. However, no method for assessing the relationships between vaccines and the development of autoimmune diseases has been established. Aplastic anemia (AA) is […]

Bone Marrow Suppression Secondary to the COVID-19 Booster Vaccine: A Case Report

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Authors: Toral Shastri 1, Navkiran Randhawa 2, Ragia Aly 3, Masood Ghouse 3 PMID: 35210894 PMCID: PMC8863340DOI: 10.2147/JBM.S350290 Abstract As of September 2021, SARS-CoV-2 booster shots became widely available in the US to ensure continued protection against the virus. A temporal relationship has been previously reported between the first or second dose of the COVID-19 vaccine and the development of thrombocytopenia. However, adverse events related […]

SARS-CoV-2 infection induces long-lived bone marrow plasma cells in humans

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Authors: Jackson S. Turner, Wooseob Kim, Elizaveta Kalaidina, Charles W. Goss, Adriana M. Rauseo, Aaron J. Schmitz, Lena Hansen, Alem Haile, Michael K. Klebert, Iskra Pusic, Jane A. O’Halloran, Rachel M. Presti & Ali H. Ellebedy  Nature volume 595, pages421–425 (2021) Abstract Long-lived bone marrow plasma cells (BMPCs) are a persistent and essential source of protective antibodies1,2,3,4,5,6,7. Individuals who have recovered from COVID-19 have a substantially lower risk of reinfection with […]

Trained Innate Immunity, Epigenetics, and Covid-19

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Authors: Alberto Mantovani, M.D., and Mihai G. Netea, M.D. Innate immunity is mediated by different cell types and cell-associated or fluid-phase pattern-recognition molecules and plays a key role in tissue repair and resistance against pathogens.1 Exposure to selected vaccines, such as bacille Calmette–Guérin (BCG) or microbial components, can increase the baseline tone of innate immunity and trigger […]

Multi-layered transcriptomic analyses reveal an immunological overlap between COVID-19 and hemophagocytic lymphohistiocytosis associated with disease severity

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Authors: Lena F. Schimkea,5, Alexandre H.C. Marquesa, Gabriela Crispim Baiocchia, Caroline Aliane de Souza Pradob Dennyson Leandro M. Fonsecab , Paula Paccielli Freirea , Desirée Rodrigues Plaçab , Igor Salerno Filgueirasa ,Ranieri Coelho Salgadoa, Gabriel Jansen-Marquesc, Antonio Edson Rocha liveirab, Jean PierreSchatzmann Perona, José Alexandre Marzagão Barbutoa,d, Niels Olsen Saraiva Camaraa, Vera Lúcia Garcia Calicha […]

Good news: Mild COVID-19 induces lasting antibody protection

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People who have had mild illness develop antibody–producing cells that can last lifetime Authors: by Tamara Bhandari•May 24, 2021 Months after recovering from mild cases of COVID-19, people still have immune cells in their body pumping out antibodies against the virus that causes COVID-19, according to a study from researchers at Washington University School of Medicine […]