Lysophospholipids Are Potential Biomarkers of Ovarian Cancer

Cancer Epidemiology Biomarkers and Prevention - Tập 13 Số 7 - Trang 1185-1191 - 2004
Rebecca Sutphen1, Yan Xu2, George D. Wilbanks3, James V. Fiorica1,3, Edward C. Grendys1,3, James P. LaPolla4, Hector Arango5, Mitchell Hoffman6, Martin A Martino3, Katie Wakeley3,7, David Ray Griffin6, Rafael W. Blanco8, Alan Cantor1, Yijin Xiao2, Jeffrey P. Krischer1
11Interdisciplinary Oncology, Departments of
24Cleveland Clinic Foundation, Cleveland, Ohio;
32Obstetrics and Gynecology, and
45Department of Gynecologic Oncology, Bayfront Medical Center, St. Petersburg, Florida;
56Morton Plant Hospital, Clearwater, Florida;
63Gynecologic Oncology, College of Medicine and H. Lee Moffitt Cancer Center and Research Institute, University of South Florida, Tampa, Florida;
77New England Medical Center, Tufts University, Boston, Massachusetts; and
88Bay Area Oncology, Tampa, Florida

Tóm tắt

Abstract Objective: To determine whether lysophosphatidic acid (LPA) and other lysophospholipids (LPL) are useful markers for diagnosis and/or prognosis of ovarian cancer in a controlled setting. Method: Plasma samples were collected from ovarian cancer patients and healthy control women in Hillsborough and Pinellas counties, Florida, and processed at the University of South Florida H. Lee Moffitt Cancer Center and Research Institute (Moffitt). Case patients with epithelial ovarian cancer (n = 117) and healthy control subjects (n = 27) participated in the study. Blinded LPL analysis, including 23 individual LPL species, was performed at the Cleveland Clinic Foundation using an electrospray ionization mass spectrometry–based method. LPL levels were transmitted to Moffitt, where clinical data were reviewed and statistical analyses were performed. Results: There were statistically significant differences between preoperative case samples (n = 45) and control samples (n = 27) in the mean levels of total LPA, total lysophosphatidylinositol (LPI), sphingosine-1-phosphate (S1P), and individual LPA species as well as the combination of several LPL species. The combination of 16:0-LPA and 20:4-LPA yielded the best discrimination between preoperative case samples and control samples, with 93.1% correct classification, 91.1% sensitivity, and 96.3% specificity. In 22 cases with both preoperative and postoperative samples, the postoperative levels of several LPL, including S1P, total LPA, and lysophosphatidylcholine (LPC) levels and some individual species of LPA and LPC, were significantly different from preoperative levels. Conclusion: LPA, LPI, LPC, and S1P appear useful as diagnostic and prognostic biomarkers of ovarian cancer.

Từ khóa


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