title: Tomato sauce supplementation and prostate cancer: lycopene accumulation and modulation of biomarkers of carcinogenesis.
abstract: As part of a randomized placebo-controlled study to evaluate the effect of lycopene supplementation on DNA damage in men with prostate cancer, a nonrandomized 5th arm using tomato sauce was included and reported here. Thirty-two patients with localized prostate adenocarcinoma consumed tomato sauce-based pasta dishes for 3 weeks (30 mg of lycopene/day) before their scheduled radical prostatectomy. Prostate tissue was obtained as biopsies at baseline and as resected tissue at the time of the prostatectomy. Serum and prostate lycopene, serum prostate specific antigen (PSA) concentrations, and leukocyte DNA 8-OH-deoxyguanosine/deoxyguanosine (8OHdG) were measured at baseline and at the end of the intervention. Cancer cells in paraffin sections of prostate biopsies and postintervention resected tissue were compared for 8OHdG staining and for apoptosis. Adherence to the daily consumption of tomato-based entrees was 81.6% of the intended dose, and serum and prostate lycopene concentrations increased 1.97- and 2.92-fold (P < 0.001), respectively. Mean serum PSA concentrations decreased by 17.5% (P < 0.002) and leukocyte 8OHdG decreased by 21.3% (P < 0.005) after tomato sauce consumption. Resected tissues from tomato sauce-supplemented patients had 28.3% lower prostate 8OHdG compared with the nonstudy control group (P < 0.03). Cancer cell 8OHdG staining of Gleason Score-matched resected prostate sections was reduced by 40.5% in mean nuclear density (P < 0.005) and by 36.4% in mean area (P < 0.018) compared with the presupplementation biopsy. Apoptotic index was higher in hyperplastic and neoplastic cells in the resected tissue after supplementation. These data taken as a whole indicate significant uptake of lycopene into prostate tissue and a reduction in DNA damage in both leukocyte and prostate tissue. Whether reduction in DNA damage to prostate cancer cells is beneficial awaits further research, although reduction in serum PSA concentrations is promising.
authors.affiliation: Department of Human Nutrition and Dietetics, m/c 517, University of Illinois, 1919 West Taylor Street, Chicago, IL 60612, USA. pbowen@uic.edu
authors.forename: Phyllis
authors.initials: P
authors.lastname: Bowen
authors.forename: Longwen
authors.initials: L
authors.lastname: Chen
authors.forename: Maria
authors.initials: M
authors.lastname: Stacewicz-Sapuntzakis
authors.forename: Claudine
authors.initials: C
authors.lastname: Duncan
authors.forename: Roohollah
authors.initials: R
authors.lastname: Sharifi
authors.forename: Luna
authors.initials: L
authors.lastname: Ghosh
authors.forename: Hyung-Sook
authors.initials: HS
authors.lastname: Kim
authors.forename: Konstantin
authors.initials: K
authors.lastname: Christov-Tzelkov
authors.forename: Richard
authors.initials: R
authors.lastname: van Breemen
mesh_terms: D000080242:8-Hydroxy-2'-Deoxyguanosine; D000230:Adenocarcinoma / Q000178:diet therapy / Q000378:metabolism / Q000473:pathology; D016588:Anticarcinogenic Agents / Q000008:administration & dosage / Q000378:metabolism; D000975:Antioxidants / Q000008:administration & dosage / Q000378:metabolism; D017209:Apoptosis; D002338:Carotenoids / Q000008:administration & dosage / Q000378:metabolism*; D003849:Deoxyguanosine / Q000031:analogs & derivatives* / Q000378:metabolism; D006801:Humans; D000077276:Lycopene; D018551:Solanum lycopersicum; D008297:Male; D017430:Prostate-Specific Antigen / Q000097:blood; D011471:Prostatic Neoplasms / Q000178:diet therapy* / Q000378:metabolism* / Q000473:pathology / Q000628:therapy; D016032:Randomized Controlled Trials as Topic
chemical_list: D016588:Anticarcinogenic Agents; D000975:Antioxidants; D002338:Carotenoids; D000080242:8-Hydroxy-2'-Deoxyguanosine; D017430:Prostate-Specific Antigen; D003849:Deoxyguanosine; D000077276:Lycopene