Kitano K, Ichikawa N, Mahbub B, Ueno M, Ito T, Shimodaira S, Kodaira H, Ishida F, Kobayashi H, Saito H, Okubo Y, Enokihara H, Kiyosawa K
Second Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, Japan.
Br J Haematol. 1996 Feb;92(2):315-7. doi: 10.1046/j.1365-2141.1996.d01-1482.x.
We describe a patient with eosinophilia and an abnormal CD(3+)4-(8-) alpha beta+ T-cell population. Chromosomal analysis of sorted CD(3+)4-(8-) cells revealed abnormal karyotypes on chromosome 16. In the presence of IL-2 the production of IL-5 from CD(3+)4-(8-) cells was higher than that from CD(3+)4-(8-) cells. Eosinophil survival-enhancing activity in the patient serum was inhibited by a combination of anti-IL-5 and anti-GM-CSF monoclonal antibodies. These data suggest that increased production of IL-5 and GM-CSF from the abnormal CD(3+)4-(8-) cells might cause eosinophilia.