title: Detection of melanoma by monitoring the intracellular fluorescein fluorescence polarization changes in lymphocytes.
abstract: The effectiveness of detecting melanoma by measuring the intracellular fluorescein fluorescent polarization (IFFP) of patients' SCM (structuredness of the cytoplasmic matrix)-responding lymphocytes was examined. SCM-responding lymphocytes from 46 melanoma patients and 32 healthy volunteers were labeled with fluorescein diacetate and challenged with different stimuli, and the resulting polarization was determined. The polarizations (P) obtained upon stimulation with nothing (P-0), encephalitogenic factor (P-EF), phytohaemagglutinin (P-PHA), or melanoma antigen (P-MEL), and the ratios RR(ef) (P-EF/P-PHA) and RR(mel) (P-MEL/P-PHA) were lower for SCM-responding lymphocytes from the patients as a group than for those of the controls. The specificity and sensitivity of the IFFP tests (using cutoff values) to detect melanoma were 90.6 and 73.9%, respectively. The IFFP tests may facilitate the discrimination between melanoma patients and healthy subjects, and may be used in follow-up of patients with melanoma.
authors.affiliation: Department of Oncology, Tel Aviv Sourasky Medical Center, Israel.
authors.forename: O
authors.initials: O
authors.lastname: Merimsky
authors.forename: B
authors.initials: B
authors.lastname: Kaplan
authors.forename: M
authors.initials: M
authors.lastname: Deutsch
authors.forename: R
authors.initials: R
authors.lastname: Tirosh
authors.forename: A
authors.initials: A
authors.lastname: Weinreb
authors.forename: S
authors.initials: S
authors.lastname: Chaitchik
mesh_terms: D000465:Algorithms; D000951:Antigens, Neoplasm / Q000276:immunology; D005134:Eye Neoplasms / Q000556:secondary; D005260:Female; D019793:Fluorescein; D005452:Fluoresceins; D005454:Fluorescence Polarization; D006801:Humans; D008213:Lymphocyte Activation; D008214:Lymphocytes / Q000276:immunology / Q000473:pathology*; D008297:Male; D008545:Melanoma / Q000175:diagnosis* / Q000276:immunology / Q000473:pathology / Q000556:secondary; D018365:Neoplasm, Residual; D010835:Phytohemagglutinins / Q000276:immunology; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology
chemical_list: D000951:Antigens, Neoplasm; D005452:Fluoresceins; D010835:Phytohemagglutinins; D019793:Fluorescein