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Anticancer and Immunomodulatory Effects of Lactobacillus plantarum LS/07, Inulin and Melatonin in NMU-induced Rat Model of Breast Cancer

M. Kassayová, N. Bobrov, L. Strojný, P. Orendáš, V. Demečková, R. Jendželovský, P. Kubatka, T. Kisková, P. Kružliak, M. Adamkov, A. Bomba, P. Fedoročko,

. 2016 ; 36 (6) : 2719-28.

Language English Country Greece

Document type Journal Article

Persistent link   https://www.medvik.cz/link/bmc17013793

BACKGROUND/AIM: Chemopreventive activity of a new probiotic strain Lactobacillus plantarum LS/07 (PRO) and prebiotic oligofructose-enriched inulin (PRE) in rat mammary carcinogenesis induced by procarcinogen 7,12-dimethylbenz[a]anthracene has been reported before. This study evaluated the anticancer and immunomodulatory efficacy of PRO, PRE, PRO+PRE (PRO/PRE) and combination with melatonin (PRO+PRE+MEL) in a rat model, when breast cancer was induced by a direct-acting carcinogen N-nitroso-N-methylurea (NMU). MATERIALS AND METHODS: Daily administration of PRO (at a dose of 8.4×10(8) colony-forming units (c.f.u.)/rat), PRE (in the diet, 20 g/kg) and MEL (in tap water, 20 mg/l) started 14 days before the first NMU dose and lasted for 16 weeks. RESULTS: Although tumor growth was not altered, a marked decrease in the ratio of high-/low-grade carcinomas and in tumoral Ki-67 expression was found after PRO+PRE treatment; melatonin augmented these effects. PRO+PRE+MEL combination enhanced CD4(+) and CD8(+) T-cell tumor infiltration induced by PRO/PRE and increased CD25(+)FoxP3(+) regulatory T-cells in tumors. CONCLUSION: In mammary carcinogenesis, Lactobacillus plantarum LS/07 and inulin exert prodifferentiating, antiproliferative and immunomodulatory activities, which are significantly amplified by melatonin co-administration.

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$a BACKGROUND/AIM: Chemopreventive activity of a new probiotic strain Lactobacillus plantarum LS/07 (PRO) and prebiotic oligofructose-enriched inulin (PRE) in rat mammary carcinogenesis induced by procarcinogen 7,12-dimethylbenz[a]anthracene has been reported before. This study evaluated the anticancer and immunomodulatory efficacy of PRO, PRE, PRO+PRE (PRO/PRE) and combination with melatonin (PRO+PRE+MEL) in a rat model, when breast cancer was induced by a direct-acting carcinogen N-nitroso-N-methylurea (NMU). MATERIALS AND METHODS: Daily administration of PRO (at a dose of 8.4×10(8) colony-forming units (c.f.u.)/rat), PRE (in the diet, 20 g/kg) and MEL (in tap water, 20 mg/l) started 14 days before the first NMU dose and lasted for 16 weeks. RESULTS: Although tumor growth was not altered, a marked decrease in the ratio of high-/low-grade carcinomas and in tumoral Ki-67 expression was found after PRO+PRE treatment; melatonin augmented these effects. PRO+PRE+MEL combination enhanced CD4(+) and CD8(+) T-cell tumor infiltration induced by PRO/PRE and increased CD25(+)FoxP3(+) regulatory T-cells in tumors. CONCLUSION: In mammary carcinogenesis, Lactobacillus plantarum LS/07 and inulin exert prodifferentiating, antiproliferative and immunomodulatory activities, which are significantly amplified by melatonin co-administration.
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$a Bobrov, Nikita $u Department of Forensic Medicine, Faculty of Medicine, P.J. Šafárik University, Košice, Slovak Republic.
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$a Strojný, Ladislav $u Department of Experimental Medicine, Faculty of Medicine, P.J. Šafárik University, Košice, Slovak Republic.
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$a Orendáš, Peter $u Institute of Biology and Ecology, Faculty of Science, P.J. Šafárik University, Košice, Slovak Republic.
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$a Jendželovský, Rastislav $u Institute of Biology and Ecology, Faculty of Science, P.J. Šafárik University, Košice, Slovak Republic.
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$a Kubatka, Peter $u Department of Medical Biology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Martin, Slovak Republic.
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$a Kisková, Terézia $u Institute of Biology and Ecology, Faculty of Science, P.J. Šafárik University, Košice, Slovak Republic.
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$a Kružliak, Peter $u Laboratory of Structural Biology and Proteomics, Central Laboratories, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic monika.kassayova@upjs.sk kruzliakpeter@gmail.com.
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$a Adamkov, Marián $u Department of Histology and Embryology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Martin, Slovak Republic. $7 gn_A_00001422
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$a Bomba, Alojz $u Department of Experimental Medicine, Faculty of Medicine, P.J. Šafárik University, Košice, Slovak Republic.
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