PMID- 6301465 OWN - NLM STAT- MEDLINE DCOM- 19830527 LR - 20190612 IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 110 IP - 3 DP - 1983 Feb 10 TI - A reevaluation of the chemotactic potency of leukotriene B4 (LTB4). PG - 842-50 AB - The chemotactic potency of leukotriene B4 (LTB4) was reevaluated based on an improved purification procedure which combines reversed phase and straight phase high pressure liquid chromatography (RP-HPLC and SP-HPLC). Socalled LTB4 isomer III prepared by RP-HPLC contains two double oxygenated 5,12-dihydroxy acids in addition to LTB4. On a molar basis, the chemotactic activity of LTB4 repurified by SP-HPLC was far greater than that of the other two 5,12-dihydroxy acids and comparable to that of formyl-methionyl-leucyl-phenylalanine (fMLP). The chemotactic activity of LTB4 isomer III is dependent upon the relative concentrations of the double oxygenated 5,12-dihydroxy acids and LTB4. Further purification of peak III by SP-HPLC is required before assessing the biologic activity of LTB4. FAU - Jubiz, W AU - Jubiz W LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Oligopeptides) RN - 1HGW4DR56D (Leukotriene B4) RN - 4289-98-9 (N-Formylmethionine) RN - 59880-97-6 (N-Formylmethionine Leucyl-Phenylalanine) SB - IM MH - Chemotaxis, Leukocyte/*drug effects MH - Chromatography, High Pressure Liquid MH - Gas Chromatography-Mass Spectrometry MH - Humans MH - Isomerism MH - Leukotriene B4/isolation & purification/*pharmacology MH - N-Formylmethionine/analogs & derivatives/pharmacology MH - N-Formylmethionine Leucyl-Phenylalanine MH - Neutrophils/drug effects/*physiology MH - Oligopeptides/pharmacology MH - Spectrophotometry, Ultraviolet MH - Structure-Activity Relationship EDAT- 1983/02/10 00:00 MHDA- 1983/02/10 00:01 CRDT- 1983/02/10 00:00 PHST- 1983/02/10 00:00 [pubmed] PHST- 1983/02/10 00:01 [medline] PHST- 1983/02/10 00:00 [entrez] AID - 0006-291X(83)91038-0 [pii] AID - 10.1016/0006-291x(83)91038-0 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 1983 Feb 10;110(3):842-50. doi: 10.1016/0006-291x(83)91038-0.