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Drader J, Saint-Louis G, Muller J, Charbonnel MC, Guilbaud P, Berthon L, Roscioli-Johnson KM, Zarzana CA, Rae C, Groenewold GS, Mincher BJ, Mezyk S, McCann K, Boyes SG, Braley J. Radiation chemistry of the branched-chain monoamide di-2-ethylhexyl-isobutyramide. Solvent Extraction and Ion Exchange 2017. [DOI: 10.1080/07366299.2017.1379713] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J Drader
- CEA, Nuclear Energy Division, Research department on Mining and Fuel Reprocessing Processes, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - G Saint-Louis
- CEA, Nuclear Energy Division, Research department on Mining and Fuel Reprocessing Processes, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - J.M Muller
- CEA, Nuclear Energy Division, Research department on Mining and Fuel Reprocessing Processes, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - M-C Charbonnel
- CEA, Nuclear Energy Division, Research department on Mining and Fuel Reprocessing Processes, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - P Guilbaud
- CEA, Nuclear Energy Division, Research department on Mining and Fuel Reprocessing Processes, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - L Berthon
- CEA, Nuclear Energy Division, Research department on Mining and Fuel Reprocessing Processes, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - K. M Roscioli-Johnson
- Idaho National Laboratory, Aqueous Separations and Radiochemistry Department, Idaho Falls, USA
| | - C. A Zarzana
- Idaho National Laboratory, Aqueous Separations and Radiochemistry Department, Idaho Falls, USA
| | - C Rae
- Idaho National Laboratory, Aqueous Separations and Radiochemistry Department, Idaho Falls, USA
| | - G. S Groenewold
- Idaho National Laboratory, Aqueous Separations and Radiochemistry Department, Idaho Falls, USA
| | - B. J Mincher
- Idaho National Laboratory, Aqueous Separations and Radiochemistry Department, Idaho Falls, USA
| | - S.P Mezyk
- California State University, Long Beach, Department of Chemistry and Biochemistry, CA, USA
| | - K McCann
- Colorado School of Mines, Department of Chemistry, 1500 Illinois Street, Golden, CO, USA
| | - S. G Boyes
- Colorado School of Mines, Department of Chemistry, 1500 Illinois Street, Golden, CO, USA
| | - J Braley
- Colorado School of Mines, Department of Chemistry, 1500 Illinois Street, Golden, CO, USA
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Yeung DT, Moulton DJ, Heatley SL, Nievergall E, Dang P, Braley J, Branford S, Moore S, Mullighan CG, Hughes TP, White DL. Relapse of BCR-ABL1-like ALL mediated by the ABL1 kinase domain mutation T315I following initial response to dasatinib treatment. Leukemia 2014; 29:230-2. [PMID: 25179732 DOI: 10.1038/leu.2014.256] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- D T Yeung
- 1] Discipline of Medicine, School of Medicine, University of Adelaide, Adelaide, South Australia, Australia [2] Department of Genetics & Pathology & Centre for Cancer Biology, Adelaide, South Australia, Australia [3] Department of Haematology, SA Pathology, Adelaide, South Australia, Australia
| | - D J Moulton
- 1] Discipline of Medicine, School of Medicine, University of Adelaide, Adelaide, South Australia, Australia [2] Department of Haematology, SA Pathology, Adelaide, South Australia, Australia [3] South Australia Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - S L Heatley
- South Australia Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - E Nievergall
- South Australia Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - P Dang
- South Australia Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - J Braley
- Department of Genetics & Pathology & Centre for Cancer Biology, Adelaide, South Australia, Australia
| | - S Branford
- Department of Genetics & Pathology & Centre for Cancer Biology, Adelaide, South Australia, Australia
| | - S Moore
- Department of Genetics & Pathology & Centre for Cancer Biology, Adelaide, South Australia, Australia
| | - C G Mullighan
- 1] Discipline of Medicine, School of Medicine, University of Adelaide, Adelaide, South Australia, Australia [2] South Australia Health and Medical Research Institute, Adelaide, South Australia, Australia [3] St Jude Children's Research Hospital, Memphis, TN, USA
| | - T P Hughes
- 1] Discipline of Medicine, School of Medicine, University of Adelaide, Adelaide, South Australia, Australia [2] Department of Haematology, SA Pathology, Adelaide, South Australia, Australia [3] South Australia Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - D L White
- 1] Discipline of Medicine, School of Medicine, University of Adelaide, Adelaide, South Australia, Australia [2] South Australia Health and Medical Research Institute, Adelaide, South Australia, Australia [3] Discipline of Paediatrics, School of Medicine, University of Adelaide, Adelaide, South Australia, Australia
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Abstract
Two sets of experiments on the role of tea in azoxymethane (AOM) induced colon cancer were performed. The first test involved male F344 rats given 1.25% solutions of black tea beginning at 5 weeks of age and ending at 51 days of age. At 6 and 7 weeks of age, they received 15 mg/kg AOM and were held for 50 weeks. Another group received the AOM dosage at 6 and 7 weeks and were placed on the tea solutions 2 days after the last AOM dosage, at 51 days of age, and held for the 50-week period. The end point was the occurrence and multiplicity of colon cancer, classified as in situ, exophytic, invasive and Peyer's patch carcinomas. Tea failed to affect the incidence and multiplicity of colon cancers when given during or after the AOM administration, but tea after AOM increased the multiplicity of exophytic carcinomas. In a second series of tests, solutions of 0.6, 1.25, 1.75 or 2.5% tea were given, beginning 1 week prior to the two AOM doses and extending for 42 weeks. Also, one group received 1.25% tea and 1.85% whole milk. The incidence of exophytic or invasive colon cancer and tumor multiplicity were similar in all treatment groups, although the incidence of exophytic neoplasms was higher with 2.5% tea. Thus, chronic administration failed to significantly change the incidence and multiplicity of the AOM-induced colon cancers. These findings are accounted for by the underlying mechanism, namely the fact that tea solutions do not alter the amount of cytochrome P-4502E1 required for the metabolic activation of AOM.
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Affiliation(s)
- J H Weisburger
- Naylor Dana Institute, American Health Foundation, Valhalla, New York 10595-1599, USA.
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Weisburger JH, Braley J, Reinhardt J, Aliaga C, Rivenson A, Hard GC, Zhang XM, Takahashi M, Esumi H, Sugimura T. The role of fat and calcium in the production of foci of aberrant crypts in the colon of rats fed 2-amino-1-methyl-6-phenylimidazo[4,5-b]-pyridine. Environ Health Perspect 1994; 102 Suppl 6:53-55. [PMID: 7889859 PMCID: PMC1566841 DOI: 10.1289/ehp.94102s653] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The modulation by dietary fat levels of intestine carcinogenesis is well documented. New developments suggest that calcium ions may also play a role. A rapid bioassay, the induction of foci of aberrant crypts in the colon, was used to explore the interaction between dietary fat and calcium. Male F344 rats 6 weeks of age were placed on diets containing 5 or 20% corn oil, and 0.04 or 0.32% calcium ion, as calcium lactate. Each dietary group was fed 400 ppm 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhlP), and negative controls received the diets alone. A positive control group was given 2 mg N-nitrosomethylurea (NMU) intrarectally four times in a 2-week period. All rats were killed after 9 weeks. The intestinal tract was rinsed with Krebs-Ringer buffer. After staining a 6-cm segment of the descending colon and rectum with 0.2% methylene blue, foci of aberrant crypts were evaluated microscopically. With PhlP as a carcinogen, the rats on a high-fat, low-calcium level had more foci of aberrant crypts than animals on a low-fat level. With the higher calcium level, there were fewer foci and aberrant crypts, but the effect of fat was still significant. With NMU and a low-calcium level, the effect of fat level was evident. However, with the higher calcium intake, there were considerably more foci of aberrant crypts than on the low-calcium level, and the effect of the dietary fat level was not obvious.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- J H Weisburger
- American Health Foundation, Valhalla, New York 10595-1599
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Weisburger JH, Rivenson A, Reinhardt J, Aliaga C, Braley J, Dolan LM, Williams GM, Zang E, Kingston DG, Bashir M. Genotoxicity and carcinogenicity in rats and mice of 2-amino-3,6-dihydro-3-methyl-7H-imidazolo[4,5-f]quinolin-7- one: an intestinal bacterial metabolite of 2-amino-3-methyl-3H-imidazo[4,5-f]quinoline. J Natl Cancer Inst 1994; 86:25-30. [PMID: 8271278 DOI: 10.1093/jnci/86.1.25] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND Compounds formed on the surface of fried or grilled meat and fish may be associated with increased risk of colon cancer. Normal intestinal bacteria can convert one of these compounds, 2-amino-3-methyl-3H-imidazo[4,5-f]quinoline (IQ), to the 7-hydroxy metabolite, 2-amino-3,6-dihydro-3-methyl-7H-imidazolo[4,5-f]quinolin-7-o ne (7-OHIQ), a direct-acting mutagen. PURPOSE We studied the genotoxicity and carcinogenicity of 7-OHIQ to determine if it is responsible for the colon-specific activity of IQ. METHODS The effects of pure, synthetic 7-OHIQ on DNA were evaluated in the Ames Salmonella typhimurium TA98 test, with and without an induced rat liver S9 fraction, and in the Williams DNA repair test using freshly explanted rat hepatocytes. 7-OHIQ was also subjected to an in vivo bioassay for 21 months by long-term intrarectal infusion in male F344 rats, using IQ and N-nitrosomethylurea (NMU) given intrarectally as positive tumor-producing controls. The standard NIH-07 rodent diet was supplemented with 15% corn oil to maximize any effect of the infused materials on the colon. A parallel bioassay involved intraperitoneal injection of 7-OHIQ in newborn mice, followed by dietary administration from week 11 to week 67. Again, IQ and NMU were used as positive controls. RESULTS We confirmed that 7-OHIQ is a direct-acting mutagen in the Ames test, with added S9 liver fraction giving higher mutagenicity. 7-OHIQ was negative in the Williams test, whereas IQ was positive. 7-OHIQ did not induce colon cancer in rats, and in the newborn mouse test it produced only a low incidence of liver neoplasms. CONCLUSIONS 7-OHIQ is not genotoxic, for to be so classified it must be definitely positive in both the Ames and Williams tests; moreover, it is not carcinogenic, in marked contrast to IQ and NMU.
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Abstract
We determined the tumorigenicity in newborn mice of racemic anti-1,2-diol-3,4-epoxides of chrysene, 5-methylchrysene, 5-ethylchrysene and 5-propylchrysene. Among the four diol epoxides, only anti-5-methylchrysene-1,2-diol-3,4-epoxide was highly tumorigenic. It was 15-30 times more potent in induction of pulmonary tumors than the other compounds. The results demonstrate that molecular shape is critical in determining the tumorigenic activity of alkylchrysene diol epoxides. A methyl group in the same bay region as the epoxide ring leads to exceptional activity. This may be a consequence of DNA adduct conformation.
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Affiliation(s)
- S Amin
- Division of Chemical Carcinogenesis, American Health Foundation, Valhalla, New York
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Melikian AA, Jordan KG, Braley J, Rigotty J, Meschter CL, Hecht SS, Hoffmann D. Effects of catechol on the induction of tumors in mouse skin by 7,8-dihydroxy-7,8-dihydrobenzo[a]pyrenes. Carcinogenesis 1989; 10:1897-900. [PMID: 2507190 DOI: 10.1093/carcin/10.10.1897] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Catechol (1,2-dihydroxybenzene) is a major phenolic compound present in the co-carcinogenic fraction of cigarette tar. It has been shown to be a potent co-carcinogen with benzo[a]pyrene (BaP) in mouse skin. In this study we have examined the co-carcinogenic and co-initiating activities of catechol with racemic and enantiomeric 7,8-dihydroxy-7,8-dihydrobenzo[a]pyrenes (BaP-7,8-diols) in mouse skin. Similar to enhancement of BaP carcinogenesis, repeated concurrent applications of catechol and (+/-)-BaP-7,8-diol to mouse skin strongly enhanced (+/-)-BaP-7,8-diol tumor multiplicity and tumor incidence, and decreased latency. Co-application of catechol with the racemic or either of the enantiomers of BaP-7,8-diol in a two-stage initiation--promotion protocol increased the tumor initiating activity of racemic BaP-7,8-diol, similar to that of BaP, by approximately 50%, but had no statistically significant effect on the tumor initiating activity of the (+)- or (-)-enantiomers in mouse skin. Thus, catechol is as potent a co-carcinogen with (+/-)-BaP-7,8-diol as it is with BaP. However, as tested here catechol is a weak co-initiator when applied with (+/-)-BaP-7,8-diol or BaP.
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Affiliation(s)
- A A Melikian
- American Health Foundation, Naylor Dana Institute, Valhalla, NY 10595
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Abstract
The effect of dietary beta-carotene (BC) was investigated in models of gastric and colonic carcinogenesis. Male Wistar rats were fed a diet with 0.4% BC during weaning, then 0.2% BC throughout. Cancer in the stomach and small intestine was induced by giving 80 mg/l N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) in drinking water for 52 wk, but BC failed to affect carcinogenesis under these conditions, although the incidence of gastric adenocarcinoma was reduced slightly. Neoplastic and nonneoplastic lesions in the liver, skin, and pancreas were also present to a similar extent with BC feeding and without BC. Colorectal cancer was induced by six 2 mg intrarectal infusions of MNNG per rat over a 3-wk period, with the rats held another 22 wk without an inhibitory effect by BC. Thus, 0.2% dietary BC failed to influence significantly the development of neoplasia induced by a direct-acting carcinogen in the gastrointestinal tract.
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Affiliation(s)
- R C Jones
- American Health Foundation, Valhalla, NY 10595
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Rice JE, Rivenson A, Braley J, LaVoie EJ. Methylated derivatives of pyrene and fluorene: evaluation of genotoxicity in the hepatocyte/DNA repair test and tumorigenic activity in newborn mice. J Toxicol Environ Health 1987; 21:525-32. [PMID: 3599094 DOI: 10.1080/15287398709531040] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The genotoxicity of 1-methylpyrene, 1,6-dimethylpyrene, 1-methylfluorene, 9-methylfluorene, and 1,9-dimethylfluorene was evaluated in the hepatocyte primary culture/DNA repair test, and the tumorigenic potency of these compounds was tested by bioassay in newborn mice. With the exception of 1-methylfluorene, all of these methylated polycyclic aromatic hydrocarbons are known mutagens in Salmonella typhimurium. Both 1-methylpyrene and 1,6-dimethylpyrene induced unscheduled DNA synthesis in rat hepatocytes. However, only 1-methylpyrene was tumorigenic when administered to newborn male mice. None of the methylated fluorenes assayed in the hepatocyte primary culture/DNA repair test induced unscheduled DNA synthesis. While 1,9-dimethylfluorene exhibited weak tumorigenic activity when administered by subcutaneous injection to newborn mice, 1-methylfluorene and 9-methylfluorene were inactive.
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Abstract
The tumorigenic activity of benzo[b]fluoranthene, benzo[j]fluoranthene, benzo[k]fluoranthene, and indeno-[1,2,3-cd]pyrene was evaluated in newborn CD-1 mice. The total doses of these non-alternant polycyclic aromatic hydrocarbons employed in this study ranged from 0.5 to 2.1 mumol per mouse. The results of this assay indicate that both benzo[b]fluoranthene and benzo[j]fluoranthene exhibit significant tumorigenic activity. In contrast to these results, neither benzo[k]fluoranthene nor indeno[1,2,3-cd]pyrene were tumorigenic under these assay conditions.
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Hecht SS, Rivenson A, Braley J, DiBello J, Adams JD, Hoffmann D. Induction of oral cavity tumors in F344 rats by tobacco-specific nitrosamines and snuff. Cancer Res 1986; 46:4162-6. [PMID: 3731083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The tumorigenic activities toward the oral cavity of snuff, its extracts, and two of its major nitrosamines, N'-nitrosonornicotine (NNN) and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) were evaluated in male F344 rats. In one protocol, groups of 21-30 rats were treated beginning at age 10 weeks by chronic application to the oral cavity for 131 weeks of either H2O, an H2O extract of snuff, an H2O extract of snuff enriched with ten times its indigenous concentration of NNN and NNK, or with NNN and NNK in H2O. The incidence of oral cavity tumors in the rats treated with NNN and NNK was 8 of 30, compared to 0 of 30 in controls (P less than 0.05). These results demonstrate that NNN and NNK can induce tumors locally in the oral cavity of F344 rats. Oral cavity tumors were also observed in 3 of 30 rats treated with snuff extract enriched with NNN and NNK, but not in the rats treated with snuff extract alone. In a second protocol, a test canal was surgically created in the lower lip of groups of 21-32 rats, and either snuff, H2O-extracted snuff, or snuff enriched with its own H2O extract was inserted in the test canal 5 times weekly for 116 weeks. A group of 10 control rats had surgery only. Among the 32 rats treated with snuff, 3 had oral cavity tumors; one was a squamous cell carcinoma originating in the test canal and invading the gingiva, one was a papilloma of the test canal, and one was a papilloma of the hard palate. Oral cavity tumors were also observed in 2 of 21 rats treated with H2O-extracted snuff and 1 of 32 rats treated with snuff enriched with its H2O extract. Oral tumors were not observed in control rats. The results of this study indicate that snuff and individual nitrosamines present in snuff can induce oral cavity tumors in F344 rats and support the epidemiological observations which indicate that snuff dipping causes oral cancer in man.
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