AI Article Synopsis

  • A study involving 68 multiple sclerosis patients treated with alemtuzumab tracked the production of T and B lymphocytes over a 48-month period.
  • Initially, new T lymphocyte levels dropped significantly three months after treatment, but by 36 months, they peaked, indicating a strong recovery of thymic function.
  • B cell production also increased, exceeding baseline levels as soon as three months after starting the treatment, with variations in cellular recovery patterns unrelated to factors like age, sex, previous treatments, or disease outcomes.

Article Abstract

Thymic and bone marrow outputs were evaluated in 13 sequential samples of 68 multiple sclerosis patients who initiated alemtuzumab and were clinically followed for 48 months. Three months after alemtuzumab infusions, the levels of new T lymphocytes were significantly reduced, but progressively increased reaching the highest values at 36 months, indicating the remarkable capacity of thymic function recovery. Newly produced B cells exceeded baseline levels as early as 3 months after alemtuzumab initiation. Heterogeneous patterns of new T- and B-cell recovery were identified, but without associations with age, sex, previous therapies, development of secondary autoimmunity or infections, and disease re-emergence. Trial registration version 2.0-27/01/2016.

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http://dx.doi.org/10.1016/j.jneuroim.2023.578170DOI Listing

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