PMID- 15213147 OWN - NLM STAT- MEDLINE DCOM- 20040806 LR - 20220129 IS - 0019-9567 (Print) IS - 1098-5522 (Electronic) IS - 0019-9567 (Linking) VI - 72 IP - 7 DP - 2004 Jul TI - Chemotherapy for schistosomiasis in Ugandan fishermen: treatment can cause a rapid increase in interleukin-5 levels in plasma but decreased levels of eosinophilia and worm-specific immunoglobulin E. PG - 4023-30 AB - Chemotherapy for blood-dwelling schistosomes kills the worms and exposes parasite antigen to the circulation. In many people from areas of endemicity, this treatment increases parasite-specific immunoglobulin E (IgE) and other Th2 responses in the months following therapy, responses that have been associated with subsequent resistance to reinfection. Here we investigate much earlier changes in immune reactions after praziquantel therapy in Schistosoma mansoni-infected fishermen working in an area of high transmission in Uganda. The subjects gave blood before treatment and at 1 and 21 days posttreatment. Blood cultures were incubated with schistosome soluble worm antigen (SWA) or soluble egg antigen (SEA). Interleukin-4 (IL-4), IL-5, IL-10, IL-13, gamma interferon, and transforming growth factor beta levels were measured in the cultures and in plasma. A marked transient increase in plasma IL-5 levels was observed in 75% of the subjects (n = 48) by 1 day posttreatment. This response was dependent on pretreatment intensity of infection and was accompanied by a transient decrease in eosinophil numbers. One day posttreatment, blood cultures from the 16 subjects with the greatest increase in plasma IL-5 level (>100 pg/ml) displayed reduced IL-5, IL-13, and IL-10 responses to SWA, and in contrast to the rest of the cohort, these high-IL-5 subjects displayed reduced levels of SWA-specific IgE in plasma 21 days posttreatment. Twenty months after treatment, the intensity of reinfection was positively correlated with the increase in plasma IL-5 level seen 1 day posttreatment. These studies describe the heterogeneity in early immune reactions to treatment, identifying subgroups who have different patterns of reaction and who may have different capacities to mount the responses that have been associated with resistance to reinfection. FAU - Fitzsimmons, Colin M AU - Fitzsimmons CM AD - Department of Pathology, University of Cambridge, Cambridge, United Kingdom. cmf1000@cam.ac.uk FAU - Joseph, Sarah AU - Joseph S FAU - Jones, Frances M AU - Jones FM FAU - Reimert, Claus M AU - Reimert CM FAU - Hoffmann, Karl F AU - Hoffmann KF FAU - Kazibwe, Francis AU - Kazibwe F FAU - Kimani, Gachuhi AU - Kimani G FAU - Mwatha, Joseph K AU - Mwatha JK FAU - Ouma, John H AU - Ouma JH FAU - Tukahebwa, Edridah M AU - Tukahebwa EM FAU - Kariuki, Henry C AU - Kariuki HC FAU - Vennervald, Birgitte J AU - Vennervald BJ FAU - Kabatereine, Narcis B AU - Kabatereine NB FAU - Dunne, David W AU - Dunne DW LA - eng GR - G7708609/MRC_/Medical Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Infect Immun JT - Infection and immunity JID - 0246127 RN - 0 (Anthelmintics) RN - 0 (Interleukin-5) RN - 37341-29-0 (Immunoglobulin E) RN - 6490C9U457 (Praziquantel) SB - IM MH - Adolescent MH - Adult MH - Animals MH - Anthelmintics/pharmacology MH - Eosinophils/*metabolism MH - Humans MH - Immunoglobulin E/*blood/immunology MH - Interleukin-5/*metabolism MH - Male MH - Middle Aged MH - Praziquantel/pharmacology MH - Schistosoma/*drug effects/immunology MH - Schistosomiasis/*drug therapy/immunology MH - Uganda PMC - PMC427444 EDAT- 2004/06/24 05:00 MHDA- 2004/08/07 05:00 PMCR- 2004/07/01 CRDT- 2004/06/24 05:00 PHST- 2004/06/24 05:00 [pubmed] PHST- 2004/08/07 05:00 [medline] PHST- 2004/06/24 05:00 [entrez] PHST- 2004/07/01 00:00 [pmc-release] AID - 72/7/4023 [pii] AID - 1600-03 [pii] AID - 10.1128/IAI.72.7.4023-4030.2004 [doi] PST - ppublish SO - Infect Immun. 2004 Jul;72(7):4023-30. doi: 10.1128/IAI.72.7.4023-4030.2004.