PMID- 3382643 OWN - NLM STAT- MEDLINE DCOM- 19880803 LR - 20190609 IS - 0006-3002 (Print) IS - 0006-3002 (Linking) VI - 941 IP - 2 DP - 1988 Jun 22 TI - Fluidity of intact erythrocyte membranes. Correction for fluorescence energy transfer from diphenylhexatriene to hemoglobin. PG - 119-22 AB - Membranes of intact erythrocytes were labeled by the fluorescent probe 1,6-diphenyl-1,3,5-hexatriene (DPH) using an improved labeling procedure described previously (Plasek, J. and Jarolim, P. (1987) Gen. Physiol. Biophys. 6, 425-437). The relationship between the steady-state DPH fluorescence anisotropy r and the mean corpuscular hemoglobin concentration (MCHC) was studied. Fluorescence anisotropy increased with increasing MCHC. A linear dependence of r = 0.0026 (MCHC) + 0.113 was obtained which enabled us to measure the fluidity of intact red cell membranes. Without this correction for fluorescence quenching by hemoglobin, incorrect conclusions about membrane fluidity could be made. This fact is demonstrated in a group of pyruvate kinase deficient patients compared with a group of healthy blood donors. FAU - Plasek, J AU - Plasek J AD - Institute of Physics of the Charles University, Prague, Czechoslovakia. FAU - Cermakova, D AU - Cermakova D FAU - Jarolim, P AU - Jarolim P LA - eng PT - Journal Article PL - Netherlands TA - Biochim Biophys Acta JT - Biochimica et biophysica acta JID - 0217513 RN - 0 (Hemoglobins) RN - 0 (Polyenes) RN - 1720-32-7 (Diphenylhexatriene) RN - EC 2.7.1.40 (Pyruvate Kinase) SB - IM MH - Diphenylhexatriene/*blood MH - Energy Transfer MH - Erythrocyte Indices MH - Erythrocyte Membrane/*physiology MH - Fluorescence Polarization MH - Hemoglobins/*metabolism MH - Humans MH - *Membrane Fluidity MH - Polyenes/*blood MH - Pyruvate Kinase/deficiency OID - NASA: 88252097 EDAT- 1988/06/22 00:00 MHDA- 1988/06/22 00:01 CRDT- 1988/06/22 00:00 PHST- 1988/06/22 00:00 [pubmed] PHST- 1988/06/22 00:01 [medline] PHST- 1988/06/22 00:00 [entrez] AID - 0005-2736(88)90171-X [pii] AID - 10.1016/0005-2736(88)90171-x [doi] PST - ppublish SO - Biochim Biophys Acta. 1988 Jun 22;941(2):119-22. doi: 10.1016/0005-2736(88)90171-x.