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© 1994 Oxford University Press

research-article

Gender-Specific Effects of Prenatal Chlordane Exposure on Myeloid Cell Development1

GABRIELLA BLYLER*,{dagger},2, KENNETH S. LANDRETH*,{dagger} and JOHN B. BARNETT*

*Department of Microbiology and Immunology, West Virginia University School of Medicine, Health Sciences Center Morgantown West Virginia 26506-9177 {dagger}Mary Bobb Randolph Cancer Center West Virginia University School of Medicine, Health Sciences Center Morgantown West Virginia 26506-9177

Received April 9, 1993; accepted March 3, 1994

Work previously reported by this laboratory indicated that prenatal chlordane exposure affected macrophage function in young adult mice. Because these macrophage effects were due to exposure during the development of the immune system, the possibility of a persistent effect on the development of myeloid stem and progenitor cells was considered. Female mice were treated with either 0 or 8 mg of chlordane per kilogram body weight daily for 18 days during pregnancy. Myeloid hemopoietic activity of bone marrow cells from 6-week-old offspring was evaluated for in vitro colony-forming units-in-culture in response to exogeneously added recombinant forms of the cytokines granulocyte/macrophage-colony stimulating factor, macrophage- CSF, and interleukin 3 (IL-3). There was a significant depression of the numbers of bone marrow colony forming units-granulocyte/macrophage (CFU-GM), CFU-IL-3, and CFU-macrophage (CFU-M) in only the female offspring. Male offspring consistently demonstrated no difference in the CFU-GM, CFU-IL-3, or CFU-M. Prenatal treatment with chlordane did not significantly affect the number of recoverable viable bone marrow cells in either male or female mice.


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