PMID: 6980824Aug 1, 1982Paper

Murine B-lymphocyte colony formation: the effects of cyclophosphamide and azathioprine

Immunology
A Winkelstein

Abstract

The present studies assessed the relationship between murine splenic B-lymphocyte colony-forming cells and the number of mature B lymphocytes in the spleen following administration of either cyclophosphamide or azathioprine. Cyclophosphamide (200 mg/kg) reduced the number of splenic B lymphocytes by a mean of 77%. However, a greater reduction in colony-forming cells was noted. Five days after cyclophosphamide administration, the number of colonies per spleen was reduced by more than 90%. Furthermore, the recovery of colony-forming activity was delayed in comparison with restoration of the B-cell system. The number of B lymphocytes returned to normal by day 10; colony formation was still reduced on day 28. Azathioprine, administered for 5 consecutive days, caused only a minimal reduction in B-cell clonal growth. These findings suggest that colony-forming cells may not be progenitor cells which are required for recovery from drug-induced lymphocyte destruction. Rather, this activity may be a property of mature B cells. The majority of potential colony-forming cells appear to be non-proliferating, as the phase-specific drug azathioprine caused only minimal reduction in colony-forming activity.

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.