PMID- 11948609 OWN - NLM STAT- MEDLINE DCOM- 20020705 LR - 20191025 IS - 0197-8462 (Print) IS - 0197-8462 (Linking) VI - 23 IP - 4 DP - 2002 May TI - 50 Hz magnetic fields of varying flux intensity affect cell shape changes in invertebrate immunocytes: the role of potassium ion channels. PG - 292-7 AB - The effect induced by exposure to 50 Hz magnetic fields (MFs) in immunocytes from the mussel Mytilus galloprovincialis is evaluated. The whole animal was exposed for 15 and 30 min to MF intensities ranging from 200 to 1,000 microT. The changes in the cellular shape of immunocytes, expressed as shape factor (SF), were studied at different times after addition of the chemotacting substance N-formyl-Meth-Leu-Phe (fMLP). Results show that MFs provoke differing delays in fMLP-induced cellular shape changes: 200 microT are ineffective, while levels from 300 microT upwards cause a significant increase in immunocyte SF values compared to controls. Reactivation of the cells is possible up to an intensity of 600 microT. The use of PCO 400, an opener of ATP-sensitive K+ channels, shows that potassium channels are involved in the effect of MFs on M. galloprovincialis immunocytes. CI - Copyright 2002 Wiley-Liss, Inc. FAU - Ottaviani, Enzo AU - Ottaviani E AD - Department of Animal Biology, University of Modena and Reggio Emilia, Italy. ottaviani.enzo@unimo.it FAU - Malagoli, Davide AU - Malagoli D FAU - Ferrari, Alex AU - Ferrari A FAU - Tagliazucchi, Davide AU - Tagliazucchi D FAU - Conte, Angela AU - Conte A FAU - Gobba, Fabriziomaria AU - Gobba F LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Bioelectromagnetics JT - Bioelectromagnetics JID - 8008281 RN - 0 (Potassium Channels) RN - 59880-97-6 (N-Formylmethionine Leucyl-Phenylalanine) SB - IM MH - Analysis of Variance MH - Animals MH - Bivalvia/*radiation effects MH - Cell Size/*radiation effects MH - *Electromagnetic Fields MH - Lymphocytes/physiology/*radiation effects MH - N-Formylmethionine Leucyl-Phenylalanine/pharmacology MH - Potassium Channels/drug effects/*physiology/radiation effects EDAT- 2002/04/12 10:00 MHDA- 2002/07/06 10:01 CRDT- 2002/04/12 10:00 PHST- 2002/04/12 10:00 [pubmed] PHST- 2002/07/06 10:01 [medline] PHST- 2002/04/12 10:00 [entrez] AID - 10.1002/bem.10021 [pii] AID - 10.1002/bem.10021 [doi] PST - ppublish SO - Bioelectromagnetics. 2002 May;23(4):292-7. doi: 10.1002/bem.10021.