PMID- 8335975 OWN - NLM STAT- MEDLINE DCOM- 19930824 LR - 20190512 IS - 0022-1899 (Print) IS - 0022-1899 (Linking) VI - 168 IP - 2 DP - 1993 Aug TI - Proton magnetic resonance spectroscopy of polymorphonuclear leukocytes from patients with serious bacterial infections. PG - 386-92 AB - Triacylglycerols in human neutrophils exposed to proinflammatory stimuli generate a high-resolution proton magnetic resonance (1H MR) spectrum. Lipid cross-peak F volumes in neutrophils from patients with inflammatory conditions were measured. Values in patients hospitalized with localized infections (14.4 +/- 9.0; mean +/- SD) or bacteremia (19.3 +/- 9.7) were significantly higher than in patients with noninflammatory conditions (6.2 +/- 5.3) and healthy controls (2.0 +/- 3.0; P < .001). The positive predictive value of F volumes > 10 was 93% for all infection; the negative predictive value of volumes < or = 10 was 68% for all infection and 92% for bacteremia. Plasma lipopolysaccharide (LPS) concentrations were highest in bacteremic patients but did not correlate with levels of tumor necrosis factor-alpha (TNF alpha) or interleukin-6. In vitro, LPS increased F volumes of control neutrophils from 2.0 +/- 3.0 to 37.2 +/- 6.7 (P < .001); TNF alpha had no effect. F volumes in 1H MR spectra may be useful clinically to discriminate between serious bacterial infection and other inflammatory conditions. TNF alpha is not the stimulus for generation of lipid spectra in vivo. FAU - May, G L AU - May GL AD - Centre for Infectious Diseases and Microbiology, University of Sydney, Westmead Hospital, Australia. FAU - Sztelma, K AU - Sztelma K FAU - Paul, M L AU - Paul ML FAU - Sorrell, T C AU - Sorrell TC LA - eng PT - Journal Article PL - United States TA - J Infect Dis JT - The Journal of infectious diseases JID - 0413675 RN - 0 (Interleukin-6) RN - 0 (Lipopolysaccharides) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Bacterial Infections/*blood MH - Humans MH - Interleukin-6/blood MH - Lipopolysaccharides/blood/pharmacology MH - Magnetic Resonance Imaging MH - Neutrophils/*chemistry MH - Tumor Necrosis Factor-alpha/analysis/pharmacology EDAT- 1993/08/01 00:00 MHDA- 1993/08/01 00:01 CRDT- 1993/08/01 00:00 PHST- 1993/08/01 00:00 [pubmed] PHST- 1993/08/01 00:01 [medline] PHST- 1993/08/01 00:00 [entrez] AID - 10.1093/infdis/168.2.386 [doi] PST - ppublish SO - J Infect Dis. 1993 Aug;168(2):386-92. doi: 10.1093/infdis/168.2.386.