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Uddin MJ, Niitsu H, Coffey RJ, Marnett LJ. Development of Pluoronic nanoparticles of fluorocoxib A for endoscopic fluorescence imaging of colonic adenomas. J Biomed Opt 2023; 28:040501. [PMID: 37091910 PMCID: PMC10118138 DOI: 10.1117/1.jbo.28.4.040501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 03/30/2023] [Indexed: 05/03/2023]
Abstract
Significance Current white light colonoscopy suffers from many limitations that allow 22% to 32% of preneoplastic lesions to remain undetected. This high number of false negatives contributes to the appearance of interval malignancies, defined as neoplasms diagnosed between screening colonoscopies at a rate of 2% to 6%. Aim The shortcomings of today's white light-based colorectal cancer screening are addressed by colonoscopic fluorescence imaging of preneoplastic lesions using targeted fluorescent agents to enhance contrast between the lesion and the surrounding normal colonic epithelium. Approach We describe the development of Pluronic® nanoparticles of fluorocoxib A (FA), a fluorescent cyclooxygenase-2 (COX-2) inhibitor that enables targeted imaging of inflammation and cancer in numerous animal models, for endoscopic florescence imaging of colonic adenomas. Results We formulated FA, a fluorescent COX-2 inhibitor, or fluorocoxib negative control (FNC), a nontargeted fluorophore and a negative control for FA, in micellar nanoparticles of FDA approved Pluronic tri-block co-polymer using a bulk solvent evaporation method. This afforded FA-loaded micellar nanoparticles (FA-NPs) or FNC-loaded micellar nanoparticles (FNC-NPs) with the hydrodynamic diameters (D h ) of 45.7 ± 2.5 nm and 44.9 ± 3.8 nm and the zeta potentials ( ζ ) of - 1.47 ± 0.3 mV and - 1.64 ± 0.5 mV , respectively. We intravenously injected B6;129 mice bearing colonic adenomas induced by azoxymethane and dextran-sodium sulfate with FA-loaded Pluronic nanoparticles (FA-NPs). The diffusion-mediated local FA release and its binding to COX-2 enzyme allowed for clear detection of adenomas with high signal-to-noise ratios. The COX-2 targeted delivery and tumor retention were validated by negligible tumor fluorescence detected upon colonoscopic imaging of adenoma-bearing mice injected with Pluronic nanoparticles of FNC or of animals predosed with the COX-2 inhibitor, celecoxib, followed by intravenous dosing of FA-NPs. Conclusions These results demonstrate that the formulation of FA in Pluronic nanoparticles overcomes a significant hurdle to its clinical development for early detection of colorectal neoplasms by fluorescence endoscopy.
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Affiliation(s)
- Md. Jashim Uddin
- Vanderbilt University School of Medicine, Department of Biochemistry, Nashville, Tennessee, United States
| | - Hiroaki Niitsu
- Vanderbilt University Medical Center, Department of Medicine, Nashville, Tennessee, United States
| | - Robert J. Coffey
- Vanderbilt University Medical Center, Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, Nashville, Tennessee, United States
| | - Lawrence J. Marnett
- Vanderbilt University School of Medicine, Department of Biochemistry, Nashville, Tennessee, United States
- Vanderbilt University, Department of Chemistry, Nashville, Tennessee, United States
- Vanderbilt University School of Medicine, Department of Pharmacology, Nashville, Tennessee, United States
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Lee SE, Oh DJ, Nam JH, Cho H, Kim JH, Lee JK, Lim YJ, Koh MS, Kim SH. Taking Oral Sulfate Tablets with Simethicone for Bowel Preparation Leads to Higher Adenoma Detection Rate than Polyethylene Glycol: A Propensity Score Analysis. Dig Dis Sci 2023; 68:867-876. [PMID: 35781655 DOI: 10.1007/s10620-022-07611-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 06/27/2022] [Indexed: 12/09/2022]
Abstract
BACKGROUND Efficient bowel preparation is essential for preventing colorectal cancer by improving endoscopic adenoma detection. Tablet for bowel preparation containing sulfate salts, OSTs (oral sulfate tablets), has been developed and it is gaining more popularity. However, its efficacy compared to standard preparation agent, PEG-AA (polyethylene glycol), has not been well discovered. We assessed the efficacy of PEG and OSTs using a real-time clinical data warehouse (CDW) model. METHODS We performed a propensity score-matched (PSM) analysis of consecutive adult patients undergoing colonoscopy who received PEG-AA or OSTs prior to colonoscopy at a tertiary academic hospital. The endoscopic records of 992 adult patients were retrospectively analyzed. The clinical data warehouse collected data including bowel preparation, insertion time, observation time, and the detection of polyps and adenomas. Multivariate regression analysis was performed to reveal the factors associated with endoscopic outcomes. RESULTS Among 992 patients included in the study, 770 and 222 patients received PEG-AA and OSTs, respectively. Among the propensity score-matched population (n = 1897), OSTs resulted in better bowel cleansing quality (8.16 vs 7.84, p = 0.014) and a higher adenoma detection rate (38.6% vs 27.1%, p = 0.003). Using PEG-AA, older age, inadequate bowel preparation (BBPS score < 6) and endoscopy by fellows were found to be factors associated with poor adenoma detection. In the elderly over 65 years of age, a significant difference in cleansing quality between the two groups (7.21 vs 8.19, p < 0.001) was found, but its impact on ADR was not prominent (49.5% vs 45.4%, p = 0.653). CONCLUSIONS OSTs with simethicone achieved better endoscopic cleanliness, improving adenoma detection rate compared to the conventional PEG-AA protocol. The synergistic effect of both the convenience of taking tablets and the reduction of intraluminal bubble by adjunctive simethicone improves the clinical efficacy of colonoscopy.
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Affiliation(s)
- Seung Eun Lee
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Dong Jun Oh
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Ji Hyung Nam
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Hyeki Cho
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Jae Hak Kim
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Jun Kyu Lee
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Yun Jeong Lim
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Moon Soo Koh
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Sang Hoon Kim
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea.
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Senoh H, Kasai T, Hirai S, Furukawa Y, Misumi K, Goto Y, Takanobu K, Matsumoto M, Fukushima S, Aiso S. Multi-organ carcinogenicity by inhalation exposure to 2-Bromopropane in rats. J Occup Health 2023; 65:e12388. [PMID: 36756793 PMCID: PMC9909380 DOI: 10.1002/1348-9585.12388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/13/2023] [Accepted: 01/18/2023] [Indexed: 02/10/2023] Open
Abstract
OBJECTIVE The purpose of this study was to investigate the carcinogenicity of 2-bromopropane (2-BP) in rats. METHODS Male and female F344 rats were exposed by whole body inhalation to 2-BP vapor at concentrations of 0, 67, 200, and 600 ppm for 6 h/day, 5 days/week for 2 years. RESULTS All rats of both sexes exposed to 600 ppm died or became moribund within 85 weeks. Death/moribundity was caused by 2-BP induced tumors. In males, significantly increased tumors were malignant Zymbal's gland tumors; sebaceous adenoma and basal cell carcinoma of the skin/appendage; adenocarcinoma of the small/large intestine; follicular cell adenoma of the thyroid; fibroma of the subcutis, and malignant lymphoma of the lymph node. In addition, an increased trend in tumor incidence was found in the preputial gland, lung, forestomach, pancreas islet, brain, and spleen. In females, significantly increased tumors were adenocarcinoma and fibroadenoma of the mammary gland, squamous cell papilloma of the vagina, and large granular lymphocytic leukemia of the spleen. In addition, an increased trend in tumor incidence was found in Zymbal's gland, the clitoral gland, skin, large intestine, pancreas islet, uterus, and subcutis. Particularly, malignant Zymbal's gland tumors were induced even in males exposed to the lowest concentration, 67 ppm. CONCLUSION Two-year inhalation exposure to 2-BP resulted in multi-organ carcinogenicity in rats. Based on sufficient evidence of carcinogenicity in this study, 2-BP has the potential to be a human carcinogen.
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Affiliation(s)
- Hideki Senoh
- Japan Bioassay Research CenterJapan Organization of Occupational Health and SafetyHadanoJapan
| | - Tatsuya Kasai
- Japan Bioassay Research CenterJapan Organization of Occupational Health and SafetyHadanoJapan
| | - Shigeyuki Hirai
- Japan Bioassay Research CenterJapan Organization of Occupational Health and SafetyHadanoJapan
| | - Yusuke Furukawa
- Japan Bioassay Research CenterJapan Organization of Occupational Health and SafetyHadanoJapan
| | - Kyohei Misumi
- Japan Bioassay Research CenterJapan Organization of Occupational Health and SafetyHadanoJapan
| | - Yuko Goto
- Japan Bioassay Research CenterJapan Organization of Occupational Health and SafetyHadanoJapan
| | - Kenji Takanobu
- Japan Bioassay Research CenterJapan Organization of Occupational Health and SafetyHadanoJapan
| | - Michiharu Matsumoto
- Japan Bioassay Research CenterJapan Organization of Occupational Health and SafetyHadanoJapan
| | - Shoji Fukushima
- Japan Bioassay Research CenterJapan Organization of Occupational Health and SafetyHadanoJapan
| | - Shigetoshi Aiso
- Japan Bioassay Research CenterJapan Organization of Occupational Health and SafetyHadanoJapan
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刘 见, 沈 卫, 程 海, 范 旻, 肖 君, 徐 长, 谭 佳, 赖 岳, 余 成, 孙 东, 李 柳. [ Shenbai Jiedu Fang inhibits AOM/DSS-induced colorectal adenoma formation and carcinogenesis in mice via miRNA-22-mediated regulation of the PTEN/PI3K/AKT signaling pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:1452-1461. [PMID: 36329578 PMCID: PMC9637489 DOI: 10.12122/j.issn.1673-4254.2022.10.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To observe the inhibitory effect of Shenbai Jiedu Fang (SBJDF, a compound recipe of traditional Chinese herbal drugs) on chemically induced carcinogenesis of colorectal adenoma in mice and explore the role of PTEN/PI3K/AKT signaling pathway in mediating this effect. METHODS Four-week-old male C57BL/6 mice were randomly divided into control group (n=10), AOM/DSS model group (n=20), low-dose (14 g/kg) SBJDF group (n=10) and high-dose (42 g/kg) SBJDF group (n= 10). In the latter 3 groups, the mice were treated with azoxymethane (AOM) and dextran sodium sulphate (DSS) to induce carcinogenesis of colorectal adenoma. In the two SBJDF treatment groups, SBJDF was administered daily by gavage during the modeling. The survival rate, body weight, general condition of the mice, and intestinal adenoma formation and carcinogenesis were observed. The expressions of proteins associated with the PTEN/PI3K/AKT signaling pathway in the intestinal tissue were detected using immunohistochemistry. RESULTS Compared with those in the model group, the mice treated with SBJDF, especially at the high dose, showed a significantly lower incidence of intestinal carcinogenesis and had fewer intestinal tumors with smaller tumor volume. Pathological examination showed the occurrence of adenocarcinoma in the model group, while only low-grade and high-grade neoplasia were found in low-dose SBJDF group; the mice treated with high-dose SBJDF showed mainly normal mucosal tissues in the intestines with only a few lesions of low-grade neoplasia of adenoma. Compared with those in the control group, the mice in the model group had significantly elevated plasma miRNA-222 level (P < 0.05), which was obviously lowered in the two SBJDF groups (P < 0.01). The results of immunohistochemistry revealed that compared with the model group, the two SBJDF groups, especially the high-dose group, had significantly up-regulated expressions of PTEN, P-PTEN and GSK-3β and down-regulated expressions of p-GSK-3 β, PI3K, AKT, P-AKT, β-catenin, c-myc, cyclinD1 and survivin in the intestinal tissues. CONCLUSION SBJDF can significantly inhibit colorectal adenoma formation and carcino-genesis in mice possibly through regulating miRNA-222 and affecting PTEN/PI3K/AKT signaling pathway.
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Affiliation(s)
- 见荣 刘
- 南京中医药大学第一临床医学院,江苏 南京 210023First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, China
- 南京市中医院,江苏 南京 210022Nanjing Hospital of Chinese Medicine, Nanjing, 210000, China
| | - 卫星 沈
- 南京中医药大学第一临床医学院,江苏 南京 210023First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, China
- 江苏省中医药防治肿瘤协同创新中心,江苏 南京 210023Jiangsu Collaborative Innovation Center of TCM Prevention and Treatment of Tumor, Nanjing 210023, China
| | - 海波 程
- 南京中医药大学第一临床医学院,江苏 南京 210023First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, China
- 江苏省中医药防治肿瘤协同创新中心,江苏 南京 210023Jiangsu Collaborative Innovation Center of TCM Prevention and Treatment of Tumor, Nanjing 210023, China
| | - 旻旻 范
- 南京中医药大学第一临床医学院,江苏 南京 210023First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, China
- 江苏省中医药防治肿瘤协同创新中心,江苏 南京 210023Jiangsu Collaborative Innovation Center of TCM Prevention and Treatment of Tumor, Nanjing 210023, China
| | - 君 肖
- 江苏省中医院,江苏 南京 210004Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210004, China
| | - 长亮 徐
- 南京中医药大学第一临床医学院,江苏 南京 210023First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, China
- 江苏省中医药防治肿瘤协同创新中心,江苏 南京 210023Jiangsu Collaborative Innovation Center of TCM Prevention and Treatment of Tumor, Nanjing 210023, China
| | - 佳妮 谭
- 南京中医药大学第一临床医学院,江苏 南京 210023First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, China
- 江苏省中医药防治肿瘤协同创新中心,江苏 南京 210023Jiangsu Collaborative Innovation Center of TCM Prevention and Treatment of Tumor, Nanjing 210023, China
| | - 岳阳 赖
- 南京中医药大学第一临床医学院,江苏 南京 210023First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, China
- 江苏省中医药防治肿瘤协同创新中心,江苏 南京 210023Jiangsu Collaborative Innovation Center of TCM Prevention and Treatment of Tumor, Nanjing 210023, China
| | - 成涛 余
- 南京中医药大学第一临床医学院,江苏 南京 210023First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, China
- 江苏省中医药防治肿瘤协同创新中心,江苏 南京 210023Jiangsu Collaborative Innovation Center of TCM Prevention and Treatment of Tumor, Nanjing 210023, China
| | - 东东 孙
- 南京中医药大学第一临床医学院,江苏 南京 210023First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, China
- 江苏省中医药防治肿瘤协同创新中心,江苏 南京 210023Jiangsu Collaborative Innovation Center of TCM Prevention and Treatment of Tumor, Nanjing 210023, China
| | - 柳 李
- 南京中医药大学第一临床医学院,江苏 南京 210023First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, China
- 江苏省中医药防治肿瘤协同创新中心,江苏 南京 210023Jiangsu Collaborative Innovation Center of TCM Prevention and Treatment of Tumor, Nanjing 210023, China
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Donovan K, Manem N, Miller D, Yodice M, Kabbach G, Feustel P, Tadros M. The Impact of Patient Education Level on Split-Dose Colonoscopy Bowel Preparation for CRC Prevention. J Cancer Educ 2022; 37:1083-1088. [PMID: 33405208 PMCID: PMC7785930 DOI: 10.1007/s13187-020-01923-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 11/04/2020] [Indexed: 06/12/2023]
Abstract
INTRODUCTION AGA guidelines emphasize split-dose bowel preparation (BP) to ensure high-quality colonoscopy for the prevention of colorectal cancer (CRC). Split dose results in higher-quality preparation, but understanding instructions might be more difficult. Lower education levels may negatively influence BP quality. The confounding role of education level on BP quality was investigated. METHODS This was a cross-sectional study of 60 patients given split-dose BP. Patients consented and were asked three Likert scale questions based on BP instructions before the procedure. Compliance was self-reported. BP adequacy and the number of adenomas were recorded. BP was characterized as adequate (excellent, good) or inadequate (fair, poor). Data was analyzed with chi-square, odds ratio, Mann-Whitney, and regression analysis. RESULTS Thirty-one (52%) patients were high school graduates, 21 (38%) completed some college, and 6 (10%) were college graduates. College-educated patients had adequate BP (72%) more often than high school graduates (51%) (p = 0.02). Adenoma findings were not significantly different. The Likert scale mean ranks for patient understanding and reviewing of instructions were comparable between the two groups. Patient rating of scheduler explanations of the importance of following instructions was significantly better in the college group (mean ranks 2.59 and 1.83, respectively; p = 0.018). DISCUSSION Patient education level significantly affected the success of BP. Split BP can be more complex to comprehend, and instructions should consider patient education level. Specific intervention programs should be implemented to advise patients with less education that poor preparation may result in missed advanced neoplasias and subsequent procedures.
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Affiliation(s)
| | | | | | | | - Ghassan Kabbach
- Department of Internal Medicine, Albany Medical Center, Albany, NY 12208 USA
| | - Paul Feustel
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY USA
| | - Micheal Tadros
- Department of Gastroenterology, Albany Medical Center Hospital, Albany, NY 12208 USA
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Cote DJ, Kilgallon JL, Nawabi NLA, Dawood HY, Smith TR, Kaiser UB, Laws ER, Manson JE, Stampfer MJ. Oral Contraceptive and Menopausal Hormone Therapy Use and Risk of Pituitary Adenoma: Cohort and Case-Control Analyses. J Clin Endocrinol Metab 2022; 107:e1402-e1412. [PMID: 34865056 PMCID: PMC8947212 DOI: 10.1210/clinem/dgab868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT No prospective epidemiologic studies have examined associations between use of oral contraceptives (OCs) or menopausal hormone therapy (MHT) and risk of pituitary adenoma in women. OBJECTIVE Our aim was to determine the association between use of OC and MHT and risk of pituitary adenoma in two separate datasets. METHODS We evaluated the association of OC/MHT with risk of pituitary adenoma in the Nurses' Health Study and Nurses' Health Study II by computing multivariable-adjusted hazard ratios (MVHR) of pituitary adenoma by OC/MHT use using Cox proportional hazards models. Simultaneously, we carried out a matched case-control study using an institutional data repository to compute multivariable-adjusted odds ratios (MVOR) of pituitary adenoma by OC/MHT use. RESULTS In the cohort analysis, during 6 668 019 person-years, 331 participants reported a diagnosis of pituitary adenoma. Compared to never-users, neither past (MVHR = 1.05; 95% CI, 0.80-1.36) nor current OC use (MVHR = 0.72; 95% CI, 0.40-1.32) was associated with risk. For MHT, compared to never-users, both past (MVHR = 2.00; 95% CI, 1.50-2.68) and current use (MVHR = 1.80; 95% CI, 1.27-2.55) were associated with pituitary adenoma risk, as was longer duration (MVHR = 2.06; 95% CI, 1.42-2.99 comparing more than 5 years of use to never, P trend = .002). Results were similar in lagged analyses, when stratified by body mass index, and among those with recent health care use. In the case-control analysis, we included 5469 cases. Risk of pituitary adenoma was increased with ever use of MHT (MVOR = 1.57; 95% CI, 1.35-1.83) and OC (MVOR = 1.27; 95% CI, 1.14-1.42) compared to never. CONCLUSION Compared to never use, current and past MHT use and longer duration of MHT use were positively associated with higher risk of pituitary adenoma in 2 independent data sets. OC use was not associated with risk in the prospective cohort analysis and was associated with only mildly increased risk in the case-control analysis.
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Affiliation(s)
- David J Cote
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
- Pituitary/Neuroendocrine Center, Department of Neurosurgery, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
- Computational Neuroscience Outcomes Center, Department of Neurosurgery, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
- Correspondence: David J. Cote, MD, PhD, Channing Division of Network Medicine, Harvard T.H. Chan School of Public Health, Brigham and Women’s Hospital, 181 Longwood Ave, Boston, MA 02115, USA.
| | - John L Kilgallon
- Computational Neuroscience Outcomes Center, Department of Neurosurgery, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
| | - Noah L A Nawabi
- Computational Neuroscience Outcomes Center, Department of Neurosurgery, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
| | - Hassan Y Dawood
- Computational Neuroscience Outcomes Center, Department of Neurosurgery, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
| | - Timothy R Smith
- Pituitary/Neuroendocrine Center, Department of Neurosurgery, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
- Computational Neuroscience Outcomes Center, Department of Neurosurgery, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
| | - Ursula B Kaiser
- Pituitary/Neuroendocrine Center, Department of Neurosurgery, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
- Division of Endocrinology, Diabetes, and Hypertension, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
| | - Edward R Laws
- Pituitary/Neuroendocrine Center, Department of Neurosurgery, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
| | - JoAnn E Manson
- Division of Preventive Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA
| | - Meir J Stampfer
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA
- Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA
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Matsumoto M, Yamano S, Senoh H, Umeda Y, Hirai S, Saito A, Kasai T, Aiso S. Carcinogenicity and chronic toxicity of acrolein in rats and mice by two-year inhalation study. Regul Toxicol Pharmacol 2021; 121:104863. [PMID: 33465397 DOI: 10.1016/j.yrtph.2021.104863] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 01/03/2021] [Accepted: 01/05/2021] [Indexed: 10/22/2022]
Abstract
The carcinogenicity and chronic toxicity of acrolein was examined by whole body inhalation to groups of 50 F344/DuCrlCrlj rats and 50 B6D2F1/Crlj mice of both sexes for two years. The concentration of acrolein was 0, 0.1, 0.5 or 2 ppm (v/v) for male and female rats; and 0, 0.1, 0.4 or 1.6 ppm for male and female mice. Two-year administration of acrolein induced the squamous cell carcinomas in nasal cavity which is rare tumor in one male and two female rats. In females, rhabdomyoma in nasal cavity was observed in four rats exposed to 2 ppm. In mice, since the survival rate of male and female of mice control group were lowered than 25% in late of the administration periods due to renal lesion and/or amyloid deposition, the mice study was terminated at 93rd week in males, and was terminated at 99th week in females. The incidences of adenomas in nasal cavity were observed in 16 females and significantly increased only in female mice. Thus, acrolein is carcinogenic in two species, i.e. rats and mice. Additionally, non-neoplastic nasal cavity lesions in rats and mice were observed.
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Affiliation(s)
- Michiharu Matsumoto
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, Japan.
| | - Shotaro Yamano
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, Japan
| | - Hideki Senoh
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, Japan
| | - Yumi Umeda
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, Japan
| | - Shigeyuki Hirai
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, Japan
| | - Arata Saito
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, Japan
| | - Tatsuya Kasai
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, Japan
| | - Shigetoshi Aiso
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, Japan
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Hunt JE, Yassin M, Olsen J, Hartmann B, Holst JJ, Kissow H. Intestinal Growth in Glucagon Receptor Knockout Mice Is Not Associated With the Formation of AOM/DSS-Induced Tumors. Front Endocrinol (Lausanne) 2021; 12:695145. [PMID: 34108943 PMCID: PMC8181411 DOI: 10.3389/fendo.2021.695145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 05/03/2021] [Indexed: 12/22/2022] Open
Abstract
Treatment with exogenous GLP-2 has been shown to accelerate the growth of intestinal adenomas and adenocarcinomas in experimental models of colonic neoplasia, however, the role of endogenous GLP-2 in tumor promotion is less well known. Mice with a global deletion of the glucagon receptor (Gcgr-/-) display an increase in circulating GLP-1 and GLP-2. Due to the intestinotrophic nature of GLP-2, we hypothesized that Gcgr-/- mice would be more susceptible to colonic dysplasia in a model of inflammation-induced colonic carcinogenesis. Female Gcgr-/- mice were first characterized for GLP-2 secretion and in a subsequent study they were given a single injection with the carcinogen azoxymethane (7.5 mg/kg) and treated with dextran sodium sulfate (DSS) (3%) for six days (n=19 and 9). A cohort of animals (n=4) received a colonoscopy 12 days following DSS treatment and all animals were sacrificed after six weeks. Disruption of glucagon receptor signaling led to increased GLP-2 secretion (p<0.0001) and an increased concentration of GLP-2 in the pancreas of Gcgr-/- mice, coinciding with an increase in small intestinal (p<0.0001) and colonic (p<0.05) weight. Increased villus height was recorded in the duodenum (p<0.001) and crypt depth was increased in the duodenum and jejunum (p<0.05 and p<0.05). Disruption of glucagon receptor signaling did not affect body weight during AOM/DSS treatment, neither did it affect the inflammatory score assessed during colonoscopy or the number of large and small adenomas present at the end of the study period. In conclusion, despite the increased endogenous GLP-2 secretion Gcgr-/- mice were not more susceptible to AOM/DSS-induced tumors.
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Affiliation(s)
- Jenna Elizabeth Hunt
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Mohammad Yassin
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jørgen Olsen
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Bolette Hartmann
- Department of Biomedical Sciences and Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jens Juul Holst
- Department of Biomedical Sciences and Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Hannelouise Kissow
- Department of Biomedical Sciences and Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- *Correspondence: Hannelouise Kissow,
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Ozkaya HM, Sahin S, Korkmaz OP, Durcan E, Sahin HR, Celik E, Poyraz BC, Kadioglu P. Patients with acromegaly might not be at higher risk for dopamine agonist-induced impulse control disorders than those with prolactinomas. Growth Horm IGF Res 2020; 55:101356. [PMID: 33010581 DOI: 10.1016/j.ghir.2020.101356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 09/07/2020] [Accepted: 09/10/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To evaluate the prevalence of impulse control disorders (ICD) and psychiatric symptoms in patients with acromegaly receiving dopamine agonists (DA) in comparison with those with prolactinoma, nonfunctioning pituitary adenomas (NFA), and healthy controls (HC). DESIGN Forty patients with acromegaly, 40 with prolactinoma, 38 with NFA, and 32 HCs were included. All patients and controls were evaluated using the revised version of the Minnesota Impulsive Disorders Interview (MIDI-R), Symptom Check List (SCL-90-R) questionnaire, Barratt Impulsiveness Scale (BIS-11), Beck Depression Inventory (BDI), and Beck Anxiety Inventory (BAI). RESULTS We detected ICD associated with DAs in two patients with acromegaly (5%) and three patients (7.5%) with prolactinoma. All patients' symptoms resolved after discontinuation of the drug. While the mean DA dose was higher in patients with acromegaly than prolactinomas (p < 0.05), no difference was detected in terms of ICD prevalence between two groups (p > 0.05). SCL-90 depression and interpersonal sensitivity subscale positivity was higher in patients with NFA than HCs. Patients with prolactinoma had higher obsession and interpersonal sensitivity positivity and those with NFA had higher somatization, interpersonal sensitivity, and depression positivity as compared to patients with acromegaly (p < 0.05 for all). CONCLUSIONS Although DA dose was significantly higher in patients with acromegaly, there was no significant difference in the prevalence of DA-related ICD. The higher prevalence of positive screening in SCL-90 in patients with NFA in comparison to HCs supports the hypothesis that the presence of a pituitary adenoma per se might cause significant psychiatric symptoms.
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Affiliation(s)
- Hande Mefkure Ozkaya
- Division of Endocrinology, Metabolism and Diabetes, Department of Internal Medicine, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Serdar Sahin
- Division of Endocrinology, Metabolism and Diabetes, Department of Internal Medicine, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ozge Polat Korkmaz
- Division of Endocrinology, Metabolism and Diabetes, Department of Internal Medicine, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Emre Durcan
- Division of Endocrinology, Metabolism and Diabetes, Department of Internal Medicine, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Humeyra Rekali Sahin
- Department of Internal Medicine, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Emir Celik
- Division of Medical Oncology, Department of Internal Medicine, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Burc Cagri Poyraz
- Department of Psychiatry, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Pinar Kadioglu
- Division of Endocrinology, Metabolism and Diabetes, Department of Internal Medicine, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey.
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Stefaniak A, Domitrz J, Siewko K, Szelachowska M, Krętowski A, Stachura-Matyjewicz A. Pituitary adenoma and apoplexy during GnRH agonist treatment for IVF - case report. Gynecol Endocrinol 2020; 36:561-563. [PMID: 31868050 DOI: 10.1080/09513590.2019.1706086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
In vitro fertilization is commonly used for treating infertility. One stage of this process is controlled hyperstimulation of the ovaries, achieved by administering gonadotropins. There are several stimulation protocols utilized that increase the number of ovarian follicles during IVF. The most common protocol employs desensitization - the inhibition of follicle-stimulating hormone and luteinizing hormone secretion by the pituitary gland. This is achieved by administering a gonadotropin-releasing hormone (GnRH) analog that is agonistic for the GnRH receptor. However the use of a this drug during therapy carries a risk of complications. This case report deals with a rare case of a woman who underwent pituitary tumor growth as a result of the treatment of GnRH analog.
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Affiliation(s)
- Aneta Stefaniak
- Department of Reproduction and Gynecological Endocrinology, Medical University of Bialystok, Bialystok, Poland
| | - Jan Domitrz
- Department of Reproduction and Gynecological Endocrinology, Medical University of Bialystok, Bialystok, Poland
| | - Katarzyna Siewko
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok, Bialystok, Poland
| | - Małgorzata Szelachowska
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok, Bialystok, Poland
| | - Adam Krętowski
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok, Bialystok, Poland
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11
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Souris JS, Zhang HJ, Dougherty U, Chen NT, Waller JV, Lo LW, Hart J, Chen CT, Bissonnette M. A novel mouse model of sporadic colon cancer induced by combination of conditional Apc genes and chemical carcinogen in the absence of Cre recombinase. Carcinogenesis 2019; 40:1376-1386. [PMID: 30859181 PMCID: PMC6875902 DOI: 10.1093/carcin/bgz050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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] [Received: 08/31/2018] [Revised: 01/27/2019] [Accepted: 03/08/2019] [Indexed: 02/07/2023] Open
Abstract
Although valuable insights into colon cancer biology have been garnered from human colon cancer cell lines and primary colonic tissues, and animal studies using human colon cancer xenografts, immunocompetent mouse models of spontaneous or chemically induced colon cancer better phenocopy human disease. As most sporadic human colon tumors present adenomatous polyposis coli (APC) gene mutations, considerable effort has gone into developing mice that express mutant Apc alleles that mimic human colon cancer pathogenesis. A serious limitation of many of these Apc-mutant murine models, however, is that these mice develop numerous tumors in the small intestine but few, if any, in the colon. In this work, we examined three spontaneous mouse models of colon tumorigenesis based upon the widely used multiple intestinal neoplasia (Min) mouse: mice with either constitutive or conditional Apc mutations alone or in combination with caudal-related homeobox transcription factor CDX2P-Cre transgene - either with or without exposure to the potent colon carcinogen azoxymethane. Using the CDX2 promoter to drive Cre recombinase transgene expression effectively inactivated Apc in colonocytes, creating a model with earlier tumor onset and increased tumor incidence/burden, but without the Min mouse model's small intestine tumorigenesis and susceptibility to intestinal perforation/ulceration/hemorrhage. Most significantly, azoxymethane-treated mice with conditional Apc expression, but absent the Cre recombinase gene, demonstrated nearly 50% tumor incidence with two or more large colon tumors per mouse of human-like histology, but no small intestine tumors - unlike the azoxymethane-resistant C57BL/6J-background Min mouse model. As such this model provides a robust platform for chemoprevention studies.
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Affiliation(s)
- Jeffrey S Souris
- Department of Radiology, The University of Chicago, Chicago, IL, USA
| | - Hannah J Zhang
- Department of Radiology, The University of Chicago, Chicago, IL, USA
| | | | - Nai-Tzu Chen
- Institute of New Drug Development, China Medical University, Taichung, Taiwan
| | - Joseph V Waller
- Department of Radiology, The University of Chicago, Chicago, IL, USA
| | - Leu-Wei Lo
- Department of Radiology, The University of Chicago, Chicago, IL, USA
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan, Miaoli, Taiwan
| | - John Hart
- Department of Pathology, The University of Chicago, Chicago, IL, USA
| | - Chin-Tu Chen
- Department of Radiology, The University of Chicago, Chicago, IL, USA
| | - Marc Bissonnette
- Department of Medicine, The University of Chicago, Chicago, IL, USA
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Abstract
BACKGROUND H. pylori infection has been reported as a risk factor for colorectal adenoma (CRA); however, the clinical results were controversial. Therefore, we performed a meta-analysis to evaluate the association of H. pylori infection and CRA risk. METHODS A comprehensive literature search for relevant studies published up to November 2017 was performed using Medline and Embase, and the statistical analysis was conducted using Stata software. RESULTS A total of twenty-five studies including 8,675 cases and 15,275 controls were included in the analysis. The pooled analysis showed that H. pylori infection was associated with an increased risk of CRA (OR = 1.86, 95% CI = 1.55 - 2.23). Subgroup analyses according to the ethnicity, study type, and H. pylori detection method were further conducted. The results showed that H. pylori infection was associated with an increased risk of CRA both in Caucasian (OR = 2.23, 95% CI = 1.36 - 3.66) and Asian population (OR = 1.58, 95% CI = 1.36 - 1.82). Both the case-control studies and cross sectional studies suggested the H. pylori infection could promote the risk of CRA (case control: OR was 2.00, 95% CI = 1.22 - 3.28; cross-sectional: OR was 1.68, 95% CI = 1.43 - 1.99). For H. pylori infection detection methods, there is significant association between H. pylori infection and CRA risk using the serum IgG method and RUT, but not with the UBT and IHC method. CONCLUSIONS This analysis suggests that H. pylori infection may be a risk factor for CRA.
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Abstract
Administration of 0.1% isonicotinic acid hydrazide in drinking water to 9 week old ASW/Sn mice and to 5 week old MRC rats for the remainder of their lifetime resulted in an enhanced incidence of pulmonary tumors in the former species. It rose from 34 to 68% in the females as compared with the controls, while in the males, the treatment did not affect the development of these lesions nor did it increase the incidences of other types of tumors. In rats, the compound was also without any apparent carcinogenic effect. The possible role of this chemical in tumorigenesis is discussed in light of the obtained results.
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Casazza AM, Bellini O, Formelli F, Giuliani F, Lenaz L, Magrini U. Tumors and Dental and Ocular Abnormalities after Treatment of Infant Rats with Adriamycin. Tumori 2018; 63:331-8. [PMID: 929703 DOI: 10.1177/030089167706300404] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In rats repeatedly treated subcutaneously as infants with adriamycin in 2 cycles of 4 treatments each, the induction of ocular and dental abnormalities and tumors was studied. Cataracts appeared from 18 to 26 days in 80 % of CD rats treated with 1.15 mg/kg/day of adriamycin and from 28 to 104 days in 55 % of Wistar-Lewis rats given 0.75 mg/kg/day adriamycin. Abnormal growth of incisors was observed in 30 % of the CD rats and in 44 % of the Wistar-Lewis rats. At lower doses, no such abnormalities were found. At about 1 year after treatment, 100 % of the CD rats treated with 0.75 mg/kg/day adriamycin and about 60 % of the Wistar-Lewis rats treated with 0.75 and 0.5 mg/kg/day adriamycin developed tumors, which were histologically classified.
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Della Porta G, Capitano J, Parmi L, Colnaghi MI. Urethan Carcinogenesis in Newborn, Suckling, and Adult Mice of C57BL, C3H, BC3FJ, C3Hf, and SWR Strains. Tumori 2018; 53:81-102. [PMID: 6058356 DOI: 10.1177/030089166705300201] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Urethan was given to four inbred strains of mice and to one hybrid, either in the drinking water at 0.4 per cent for 15–20 days to 5-week old animals, or subcutaneously 3 mg once to newborns, or intraperitoneally 1 mg/g body weight, 5 times, once every second day, to 10-day old animals. The 5 treatments starting at 10 days of age induced a high percentage of rapidly developing thymic lymphosarcomas, while in the groups treated at birth or at 5 weeks, few tumors of this type were observed. The incidence of non-thymic malignant lymphomas or leukemias was not influenced by urethan, apart from a reduction of latent period. A small number of mammary adenocarcinomas occurred among the treated females of the C57BL and SWR strains but none in the control groups. In C3Hf and BC3F1 females there was a high incidence of mammary tumors when treatment was started at 5 weeks; treatment at birth or at 10 days did not modify the control incidence. On the contrary, hepatomas developed more rapidly and in higher percentage in the animals treated at birth or at 10 days. The incidence of pulmonary adenomas was increased by treatment in all strains parallel with the spontaneous occurrence. Tumors of harderian glands, skin, kidney, thyroid, adrenals and ovaries were also more frequent among treated animals.
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16
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Abstract
An infantile carcinogenesis assay was carried out with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) injections administered intraperitoneally at 0, 1, 30 and 60 μg/kg b.w. doses to (C57BL/6J × C3Hf)F1 (B6C3) and to (C57BL/6J × BALB/c)F1 (B6C) mice, starting from the 10th day of life, once weekly repeated 5 times. Animals were then observed until 78 weeks of age. The induction of thymic lymphomas was related to treatment at 60 μg/kg dose level in both sexes of both hybrids, and at 30 μg/kg dose level in both sexes of B6C mice and in male but not female B6C3 mice. The incidence of hepatocellular adenomas was increased by TCDD treatment at 60 μg/kg dose level in B6C3 of both sexes but not in B6C mice. Hepatocellular carcinomas were seen at increased incidence at 30 and 60 μg/kg doses in B6C3 males but not in B6C3 females or in B6C mice of both sexes. The incidence of other tumor types was not related to treatment in both hybrids. A long-term carcinogenesis bioassay with TCDD was carried out in B6C3 mice treated by gavage at 0, 2.5 and 5.0 μg/kg b.w. doses from 6 weeks of age, once weekly for 52 weeks. The animals were observed until 110 weeks of age. An increased incidence of hepatocellular adenomas and carcinomas was related to treatment, at both doses and in both sexes. The incidence of other tumor types was uniformly low in treated and control groups, without any association with treatment, in both sexes.
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Abstract
Five i.p. injections of 1 mg urethan/g body weight on alternate days administered to 10-day old SWR mice resulted in the development of thymic lymphosarcomas in 60 % and of lung adenomas in nearly 100 % of the animals, irrespective of sex. Concurrent treatment with isonicotinic acid hydrazide (INH), 0.1 mg/g body weight, administered five times on alternate days starting at 9 days of age, did not modify the carcinogenic effect of urethan. The treatment with INH alone did not induce a higher tumor incidence than in untreated controls.
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18
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Cao Y, Wu K, Mehta R, Drew DA, Song M, Lochhead P, Nguyen LH, Izard J, Fuchs CS, Garrett WS, Huttenhower C, Ogino S, Giovannucci EL, Chan AT. Long-term use of antibiotics and risk of colorectal adenoma. Gut 2018; 67:672-678. [PMID: 28377387 PMCID: PMC5628103 DOI: 10.1136/gutjnl-2016-313413] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 02/07/2017] [Accepted: 02/09/2017] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Recent evidence suggests that antibiotic use, which alters the gut microbiome, is associated with an increased risk of colorectal cancer. However, the association between antibiotic use and risk of colorectal adenoma, the precursor for the majority of colorectal cancers, has not been investigated. DESIGN We prospectively evaluated the association between antibiotic use at age 20-39 and 40-59 (assessed in 2004) and recent antibiotic use (assessed in 2008) with risk of subsequent colorectal adenoma among 16 642 women aged ≥60 enrolled in the Nurses' Health Study who underwent at least one colonoscopy through 2010. We used multivariate logistic regression to calculate ORs and 95% CIs. RESULTS We documented 1195 cases of adenoma. Increasing duration of antibiotic use at age 20-39 (ptrend=0.002) and 40-59 (ptrend=0.001) was significantly associated with an increased risk of colorectal adenoma. Compared with non-users, women who used antibiotics for ≥2 months between age 20 and 39 had a multivariable OR of 1.36 (95% CI 1.03 to 1.79). Women who used ≥2 months of antibiotics between age 40 and 59 had a multivariable OR of 1.69 (95% CI 1.24 to 2.31). The associations were similar for low-risk versus high-risk adenomas (size ≥1 cm, or with tubulovillous/villous histology, or ≥3 detected lesions), but appeared modestly stronger for proximal compared with distal adenomas. In contrast, recent antibiotic use within the past four years was not associated with risk of adenoma (ptrend=0.44). CONCLUSIONS Long-term antibiotic use in early-to-middle adulthood was associated with increased risk of colorectal adenoma.
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Affiliation(s)
- Yin Cao
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
- Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Kana Wu
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Raaj Mehta
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
- Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - David A. Drew
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
- Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Mingyang Song
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
- Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Paul Lochhead
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
- Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Long H. Nguyen
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
- Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Jacques Izard
- Food Science and Technology Department, University of Nebraska, Lincoln, NE
| | - Charles S. Fuchs
- Yale Cancer Center, New Haven, CT
- Department of Medicine, Yale School of Medicine, New Haven, CT
- Smilow Cancer Hospital, New Haven, CT
| | - Wendy S. Garrett
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
- Broad Institute of MIT and Harvard, Cambridge, MA
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Curtis Huttenhower
- Broad Institute of MIT and Harvard, Cambridge, MA
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Shuji Ogino
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA
- Division of MPE Molecular Pathological Epidemiology, Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Edward L. Giovannucci
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
- Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA
| | - Andrew T. Chan
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
- Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
- Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
- Broad Institute of MIT and Harvard, Cambridge, MA
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Zheng X, Jia B, Song X, Kong QY, Wu ML, Qiu ZW, Li H, Liu J. Preventive Potential of Resveratrol in Carcinogen-Induced Rat Thyroid Tumorigenesis. Nutrients 2018; 10:E279. [PMID: 29495605 PMCID: PMC5872697 DOI: 10.3390/nu10030279] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 02/18/2018] [Accepted: 02/25/2018] [Indexed: 12/20/2022] Open
Abstract
Thyroid cancer (TC) is the most common endocrine malignancy without reliable preventive agent. Resveratrol possesses in vitro anti-TC activities; while its effect(s) on thyroid tumorigenesis remains unknown. This study aims to address this issue using DEN/MNU/DHPN-induced rat carcinogenesis model. 50 male Sprague-Dawley rats were separated into four groups as Group-1 (5 rats); normally fed; Group-2 (15 rats); DEN/MNU/DHPN treatment only; Group-3 (15 rats) and -4 (15 rats); DEN/MNU/DHPN treatment; followed by resveratrol intragastric (IG) injection and intraperitoneal (IP) injection; respectively; in two-day intervals for 30 weeks. The results revealed that the average resveratrol concentration in thyroid tissues was 1.278 ± 0.419 nmol/g in IG group and 1.752 ± 0.398 nmol/g in IP group. The final body weights of Group-3 and Group-4 were lighter than that (p > 0.05) of Group-1; but heavier than Group-2 (p < 0.05). TC-related lesions (hyperplasia and adenomas) were found in 53.3% of Group-2; 33.3% Group-3 and 26.7% Group-4. Lower serum carcino-embryonic antigen (CEA) and thyroglobulin (Tg) levels; down-regulated expression of IL-6 and cyclooxygenase-2 (COX-2); reduction of NF-κB/p65 nuclear translocation; and elevated IkBα expression were found in the thyroid tissues of Group-3 and Group-4 in comparison with that of Group-2. These results demonstrate that IG and IP administered resveratrol efficiently reduces the frequency and severity of DEN/MNU/DHPN-caused TC-related lesions and would be of values in thyroid tumor prevention.
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Affiliation(s)
- Xu Zheng
- Liaoning Laboratory of Cancer Genetics and Epigenetics and Department of Cell Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China.
| | - Bin Jia
- Liaoning Laboratory of Cancer Genetics and Epigenetics and Department of Cell Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China.
| | - Xue Song
- Liaoning Laboratory of Cancer Genetics and Epigenetics and Department of Cell Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China.
| | - Qing-You Kong
- Liaoning Laboratory of Cancer Genetics and Epigenetics and Department of Cell Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China.
| | - Mo-Li Wu
- Liaoning Laboratory of Cancer Genetics and Epigenetics and Department of Cell Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China.
| | - Ze-Wen Qiu
- Laboratory Animal Center, Dalian Medical University, Dalian 116044, China.
| | - Hong Li
- Liaoning Laboratory of Cancer Genetics and Epigenetics and Department of Cell Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China.
| | - Jia Liu
- Liaoning Laboratory of Cancer Genetics and Epigenetics and Department of Cell Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China.
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Li H, Li X, Liu J, Jin L, Yang F, Wang J, Wang O, Gao Y. Correlation between serum lead and thyroid diseases: papillary thyroid carcinoma, nodular goiter, and thyroid adenoma. Int J Environ Health Res 2017; 27:409-419. [PMID: 28891673 DOI: 10.1080/09603123.2017.1373273] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 08/14/2017] [Indexed: 06/07/2023]
Abstract
Studies have showed that lead was associated with human health. However, the effects of lead on thyroid functions are inconsistent, and studies based on Chinese population are fragmentary. To evaluate the correlation between lead and thyroid functions of Chinese with different thyroid diseases, we conducted a hospital-based study. Ninety-six papillary thyroid carcinoma (PTC), 10 nodular goiter (NG), and 7 thyroid adenoma (TA) patients were recruited from the First Affiliated Hospital of Wenzhou Medical University, China. Serum triiodothyronine (T3), free triiodothyronine (FT3), free thyroxin (FT4), and thyroid stimulating hormone (TSH) were evaluated with chemiluminescent microparticle immunoassay. Serum lead was assessed with ICP-MASS. Partial correlation was used to explore the correlations of serum lead and thyroid diseases. Compared to PTC, the level of lead was significantly higher in TA, and lower in NG (p < 0.05). This difference remained significant in females when stratified by sex. Serum lead was negatively correlated with TSH (rs = - 0.27, p < 0.05) in PTC group. T3 was positively related to lead at quartile4 (rs = 0.61, p < 0.05) in PTC group. No significant correlations were observed between lead and FT3 or FT4 in any group. The results suggested that lead might have different etiological roles in these three thyroid diseases.
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Affiliation(s)
- Hui Li
- a Department of Nutrition and Food Hygiene, School of Public Health , Peking University , Beijing , China
- b CAS Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences , Chinese Academy of Sciences , Shanghai , China
- c Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety , Peking University , Beijing , China
| | - Xiang Li
- b CAS Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences , Chinese Academy of Sciences , Shanghai , China
- d School of Life Sciences , Shanghai University , Shanghai , China
| | - Jie Liu
- b CAS Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences , Chinese Academy of Sciences , Shanghai , China
| | - Langping Jin
- e Department of Surgical Oncology , The First Affiliated Hospital of Wenzhou Medical University , Wenzhou , China
| | - Fan Yang
- e Department of Surgical Oncology , The First Affiliated Hospital of Wenzhou Medical University , Wenzhou , China
| | - Junbo Wang
- a Department of Nutrition and Food Hygiene, School of Public Health , Peking University , Beijing , China
- c Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety , Peking University , Beijing , China
| | - Ouchen Wang
- e Department of Surgical Oncology , The First Affiliated Hospital of Wenzhou Medical University , Wenzhou , China
| | - Ying Gao
- b CAS Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences , Chinese Academy of Sciences , Shanghai , China
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Hard GC, Seely JC. Recommendations for the Interpretation of Renal Tubule Proliferative Lesions Occurring in Rat Kidneys with Advanced Chronic Progressive Nephropathy (CPN). Toxicol Pathol 2017; 33:641-9. [PMID: 16207638 DOI: 10.1080/01926230500299716] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
There is little guidance in the literature on the spectrum of proliferative tubule lesions in the kidneys of aging rats affected with spontaneously occurring, chronic progressive nephropathy (CPN), or their interpretation. Through accessing 2-year carcinogenicity studies in male F344 rats held in the Archives of the National Toxicology Program, NIEHS, a large number of cases of advanced CPN have been surveyed histopathologically for proliferative tubule lesions, and an attempt made to provide guidelines for discrimination of lesions common to the CPN process, from those representing precursors of neoplasia. Several proliferative lesions were identified as common in advanced CPN with no apparent evidence supporting a role in renal tubule carcinogenesis. It is recommended that these lesions be viewed generically as CPN tubule profiles, and not recorded separately from the diagnosis of CPN. Criteria were developed to distinguish these CPN-associated lesions from atypical tubule hyperplasia, a precursor of adenoma, both of which were also represented in this survey of advanced CPN.
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Affiliation(s)
- Gordon C Hard
- National Toxicology Program Archives, Research Triangle Park, North Carolina 27709, USA.
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22
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Rubio CA. Traditional serrated adenomas and serrated carcinomas in carcinogen-treated rats. J Clin Pathol 2016; 70:301-307. [PMID: 27566816 DOI: 10.1136/jclinpath-2016-204037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 08/01/2016] [Accepted: 08/03/2016] [Indexed: 01/23/2023]
Abstract
AIMS A recent review of archived sections from early experiments in rats showed neoplasias exhibiting serrated configurations. The aim was to assess the frequency of serrated neoplasias in the colon and small intestine of carcinogen-treated rats. METHODS While reviewing archival sections from early experiments in Sprague-Dawley (SD) and Fisher-344 (F-344) rats, we recently detected colonic and intestinal traditional serrated adenomas (displaying serrated or microtubular patterns) and serrated carcinomas. SD rats were injected 1,2-dimethylhydrazine (DMH) for 27 weeks whereas F-344 rats were fed with a pyrolysate (GLU-1) for 24 months. Filed sections from 358 colonic and small intestinal neoplasias were re-evaluated. RESULTS DMH-treated SD rats had 215 colonic neoplasias (1.4% were serrated adenomas, 7.9% microtubular adenomas, 2.8% serrated carcinomas and 2.8% microtubular carcinomas). GLU1-treated F-344 rats had 53 colonic neoplasias (1.9% were serrated adenomas and 20.8% microtubular adenomas), and 89 small intestinal neoplasias (1.1% were serrated adenomas, 42.7% microtubular adenomas and 6.7%, microtubular carcinomas). CONCLUSIONS DMH/SD-rats develop serrated and microtubular adenomas and carcinomas in the colon, whereas GLU1/F-344 rats develop microtubular adenomas in the colon and microtubular adenomas and carcinomas in the small intestine. The two rat-settings emerge as suitable models to study the molecular attributes of serrated and microtubular neoplasias under the standard conditions of the laboratory. This study is the first showing that a substantial number of serrated and particularly microtubular adenomas and carcinomas develop in the colon and small intestine of experimental rats. Importantly, serrated and microtubular neoplasias in rats recreate the histology of duodenal and colonic traditional serrated neoplasias in human beings.
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Abstract
The National Toxicology Program (NTP) Technical Reports online database was reviewed to find chemicals that were reported to show clear evidence of carcinogenicity in the NTP rodent studies and for which data on human exposure could be found. Six representative compounds were selected. Three volatile compounds: ethyl benzene, perchloroethylene, and methylene chloride; two drugs in current use: phenytoin and primidone; and one naturally occurring, widely used, flavor: allyl isothiocyanate, were selected. The carcinogenicity data from each of the NTP Technical Reports were plotted using the Rozman scale to determine the threshold for carcinogenicity from the rodent studies. The human exposures for each chemical were calculated and compared with that threshold. The thresholds for carcinogenicity of the three volatile compounds were several orders of magnitude above the levels present in ambient air in the USA. The Threshold Limit Value (TLV) of the American Conference of Governmental Industrial Hygienists (ACGIH) for these three compounds varied between several orders of magnitude below the carcinogenicity threshold to being at the threshold. The maximum recommended doses of both drugs were at the carcinogenicity threshold. The estimated mean daily human consumption of the natural flavor was less than 100 × below the carcinogenicity threshold. This method of comparison between human exposure and animal carcinogenicity studies is more objective and informative than those in current use.
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Affiliation(s)
- William J Waddell
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, Louisville, Kentucky, USA.
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Ozaki M, Ozaki K, Watanabe T, Uwagawa S, Okuno Y, Shirai T. Susceptibilities of p53 Knockout and rasH2 Transgenic Mice to Urethane-Induced Lung Carcinogenesis are Inherited from their Original Strains. Toxicol Pathol 2016; 33:267-71. [PMID: 15902970 DOI: 10.1080/01926230590908231] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In the present study, susceptibility of CB6F1 mice carrying the human prototype c-Ha- ras gene (rasH2 mice) and p53 gene knockout mice ( p53 (+/−) mice) to urethane-induced lung carcinogenesis was compared under the same experimental conditions. Both strains were administered 500 ppm urethane in their drinking water for 3 weeks. At week 26, lung adenocarcinomas and adenomas were observed in 53% and 100% of rasH2 mice, respectively, and lung adenomas were observed in 67% of rasH2 littermate (non-Tg) mice. However, lung tumors were not observed in either p53 (+/−) or p53 (+/+) mice. Peliosis hepatis and hepatic hemangiomas were observed in 27% and 67% of p53 (+/−) mice, but only in 6.7% and 6.7% of the rasH2 animals, respectively. Under the same experimental conditions, BALB/c mice, the strain of origin of the rasH2 mice, developed lung adenomas at an incidence of 93%, whereas none of the C57BL/6 original strain for p53 (+/−) mice developed lung tumors. Peliosis hepatis was observed in 40% of the C57BL/6 mice, but not in BALB/c mice; hepatic and splenic hemangiomas were not observed in these animals. These results indicate that organ susceptibility of rasH2 and p53 (+/−) mice is inherited from their strains of origin, the rasH2 and BALB/c lines being much more sensitive to the induction of pulmonary carcinogenesis.
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Affiliation(s)
- Masakazu Ozaki
- Department of Experimental Pathology and Tumor Biology, Nagoya City University, Graduate School of Medical Sciences, Mizuho-ku, Nagoya 467-8601, Japan.
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Hall WC, Elder B, Walker CL, Cai SL, Peters DG, Goodman DG, Ulland BM, Borzelleca JF. Spontaneous Renal Tubular Hyperplastic and Neoplastic Lesions in Three Sprague-Dawley Rats from a 90-Day Toxicity Study. Toxicol Pathol 2016; 35:233-41. [PMID: 17366317 DOI: 10.1080/01926230601156252] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 10/23/2022]
Abstract
Multiple renal tubular cell adenomas and atypical tubular hyperplasia were diagnosed in 2 high-dose and 1 mid-dose female Sprague–Dawley (Crl:CD®(SD)IGS BR) rats from a 90-day toxicity study of an amino acid found in green tea. The tumors were bilateral multicentric adenomas accompanied by atypical foci of renal tubular hyperplasia in both kidneys of the 3 animals. Toxic tubular changes that typically accompany renal carcinogenesis were not seen in any of the other animals of the study, suggesting rather, an underlying germline mutation of a tumor suppressor gene in these three rats. The histological appearance of these tumors and short latency was reminiscent of the spontaneous lesions reported to arise in Sprague–Dawley rats in the Nihon rat model. Nihon rats develop kidney tumors as a result of a spontaneous mutation in the rat homologue of the Birt-Hogg-Dubé gene ( Bhd). Frozen samples of liver from two tumor-bearing rats were assayed for germline alterations in the Bhd gene. The entire coding region (exons 3–13) of the Bhd gene was sequenced, and a guanine (nt106G) to adenine (nt106A) polymorphism was detected resulting in a glycine to arginine (G36R) substitution in both tumor-bearing animals. In the study animals, the frequency of the A-allele (adenine) was determined to be 27% (19/70). Interestingly, rats obtained from two other sources (n = 17) only carried the nt106G-allele, consistent with the published rat sequence for this gene. Genetic fingerprinting of microsatellite loci indicated that the rats had a shared genetic background. Laser capture microdissection (LCM) of the tumor cells demonstrated a loss of heterozygosity in the Bhd gene in neoplastic cells of one of the two animals. Taken together, these data suggest that the tumors observed in these animals arose spontaneously as a result of a shared genetic susceptibility leading to the development of renal tubular neoplasms.
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Abstract
Chemical carcinogens induce both benign and malignant mammary gland tumors in female Sprague-Dawley rats. To identify gene expression profiles associated with malignancy, cDNA microarray analysis was used to compare gene expression profiles in rat mammary gland carcinomas, adenomas, and normal mammary gland. Tumors were induced with various chemical carcinogens including 2-amino-1-methyl-6-phenylimidazo[4,5- b]pyridine (PhIP), 2-amino-3,8-dimethylimidazo[4,5- f]quinoxaline (MeIQx), 7-12-dimethylbenz[ a]anthracene (DMBA), N-nitrosomethylurea (NMU), and 4-aminobiphenyl. The global gene expression profiles in carcinomas and adenomas were distinguishable by hierarchical clustering and multi-dimensional scaling analyses. Permutation analysis revealed 110 clones statistically differentially expressed between benign and malignant tumors ( p < 0.0005). Carcinomas showed relatively high expression of several genes associated with mammary epithelial cell growth and proliferation (e.g., cyclin D1, PDGFα) and relatively low expression of differentiation marker genes (e.g., β-casein, whey acidic protein, transferrin). Other categories of genes showing differential expression between carcinomas and adenomas were associated with protein homeostasis, cytoskeleton, extracellular matrix, and cell metabolism (fatty acid metabolism, oxidative phosphorylation, and glycolysis). Major gene families implicated in malignancy by over-expression in carcinomas included the annexins (annexin A1 and A4) and Stat family of transcription factors (Stat3 and Stat5a). The elevated expression of the prolactin receptor in carcinomas concomitant with several components of the mitogenic prolactin signaling pathway implicated prolactin/prolactin receptor/Stat5a/cyclin D1 in rat mammary gland malignancy.
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Affiliation(s)
- Liang Shan
- Chemical Carcinogenesis Section, Laboratory of Experimental Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, 20892-4262, USA
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Mitchell J, Tinkey PT, Avritscher R, Van Pelt C, Eskandari G, George SK, Xiao L, Cressman E, Morris JS, Rashid A, Kaseb AO, Amin HM, Uthamanthil R. Validation of a Preclinical Model of Diethylnitrosamine-Induced Hepatic Neoplasia in Yucatan Miniature Pigs. Oncology 2016; 91:90-100. [PMID: 27305144 PMCID: PMC5432216 DOI: 10.1159/000446074] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 04/01/2016] [Indexed: 12/20/2022]
Abstract
OBJECTIVE The purpose of this study was to reduce the time to tumor onset in a diethylnitrosamine (DEN)-induced hepatocellular carcinoma (HCC) swine model via partial liver embolization (PLE) and to characterize the model for use in translational research. METHODS Eight Yucatan miniature pigs were injected intraperitoneally with either saline (n = 2) or DEN (n = 6) solution weekly for 12 weeks. Three of the DEN-treated pigs underwent PLE. The animals underwent periodic radiological evaluation, liver biopsy, and blood sampling, and full necropsy was performed at study termination (∼29 months). RESULTS All DEN-treated pigs developed hepatic adenoma and HCC. PLE accelerated the time to adenoma development but not to HCC development. Biomarker analysis results showed that IGF1 levels decreased in all DEN-treated pigs as functional liver capacity decreased with progression of HCC. VEGF and IL-6 levels were positively correlated with disease progression. Immunohistochemical probing of HCC tissues demonstrated the expression of several important survival-promoting proteins. CONCLUSION To our knowledge, we are the first to demonstrate an accelerated development of hepatic neoplasia in Yucatan miniature pigs. Our HCC swine model closely mimics the human condition (i.e., progressive disease stages and expression of relevant molecular markers) and is a viable translational model.
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Affiliation(s)
- Jennifer Mitchell
- Department of Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Peggy T. Tinkey
- Department of Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Rony Avritscher
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Carolyn Van Pelt
- Department of Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Ghazaleh Eskandari
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Suraj Konnath George
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Lianchun Xiao
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Erik Cressman
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Jeffrey S. Morris
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Asif Rashid
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Ahmed O. Kaseb
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Hesham M. Amin
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX
- The University of Texas Graduate School of Biomedical Sciences, Houston, TX
| | - Rajesh Uthamanthil
- Department of Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX
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Abstract
Anabolic androgenic steroids (AAS) have been abused for decades by both professional and amateur athletes in order to improve physical performance or muscle mass. AAS abuse can cause adverse effects, among which are hepatotoxic effects. These effects include cholestatic icterus and possibly peliosis hepatis and hepatocellular carcinoma or adenoma. In particular, 17α-alkylated AAS appear to be hepatotoxic, whereas nonalkylated AAS appear not to be. The 17α-alkyl substitution retards hepatic metabolism of the AAS rendering it orally bioavailable. The mechanism responsible for the hepatotoxicity induced by 17α-alkylated AAS remains poorly understood. However, oxidative stress has been repeatedly shown to be associated with it. In this manuscript we present a hypothesis which describes a potential mechanism responsible for AAS-induced hepatotoxicity, based on several observations from the literature which suggest oxidative stress being a causal factor.
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Affiliation(s)
- Peter Bond
- PeterBond.nl, Waterhoenlaan 25, 3704 GV Zeist, The Netherlands.
| | - William Llewellyn
- Molecular Nutrition, 5500 Military Trail, #22-308, Jupiter, FL 33458, USA.
| | - Peter Van Mol
- Muscle and Sports Science, Kairostraat 22, 8400 Oostende, Belgium.
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Shibata Y, Hara T, Nagano J, Nakamura N, Ohno T, Ninomiya S, Ito H, Tanaka T, Saito K, Seishima M, Shimizu M, Moriwaki H, Tsurumi H. The Role of Indoleamine 2,3-Dioxygenase in Diethylnitrosamine-Induced Liver Carcinogenesis. PLoS One 2016; 11:e0146279. [PMID: 26727596 PMCID: PMC4699706 DOI: 10.1371/journal.pone.0146279] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 12/15/2015] [Indexed: 12/16/2022] Open
Abstract
Indoleamine 2,3-dioxygenase (IDO), a tryptophan-catabolizing intracellular enzyme of the L-kynurenine pathway, causes preneoplastic cells and tumor cells to escape the immune system by inducing immune tolerance; this mechanism might be associated with the development and progression of human malignancies. In the present study, we investigated the role of IDO in diethylnitrosamine (DEN)-induced hepatocarcinogenesis by using IDO-knockout (KO) mice. To induce hepatocellular carcinoma (HCC), hepatic adenoma, and preneoplastic hepatocellular lesions termed foci of cellular alteration (FCA), male IDO-wild-type (WT) and IDO-KO mice with a C57BL/6J background received a single intraperitoneal injection of DEN at 2 weeks of age. The mice were sacrificed to evaluate the development of FCA and hepatocellular neoplasms. HCC overexpressed IDO and L-kynurenine compared to surrounding normal tissue in the DEN-treated IDO-WT mice. The number and cell proliferative activity of FCAs, and the incidence and multiplicity of HCC were significantly greater in the IDO-WT than in the IDO-KO mice. The expression levels of the IDO protein, of L-kynurenine, and of IFN-γ, COX-2, TNF-α, and Foxp3 mRNA were also significantly increased in the DEN-induced hepatic tumors that developed in the IDO-WT mice. The mRNA expression levels of CD8, perforin and granzyme B were markedly increased in hepatic tumors developed in IDO-KO mice. Moreover, Foxp3-positive inflammatory cells had infiltrated into the livers of DEN-treated IDO-WT mice, whereas fewer cells had infiltrated into the livers of IDO-KO mice. Induction of IDO and elevation of L-kynurenine might play a critical role in both the early and late phase of liver carcinogenesis. Our findings suggest that inhibition of IDO might offer a promising strategy for the prevention of liver cancer.
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MESH Headings
- Adenoma/chemically induced
- Adenoma/enzymology
- Adenoma/immunology
- Animals
- CD8 Antigens/biosynthesis
- CD8 Antigens/genetics
- Cyclooxygenase 2/biosynthesis
- Cyclooxygenase 2/genetics
- Diethylnitrosamine
- Disease Progression
- Forkhead Transcription Factors/biosynthesis
- Forkhead Transcription Factors/genetics
- Gene Expression Regulation, Neoplastic
- Granzymes/biosynthesis
- Granzymes/genetics
- Immune Tolerance
- Indoleamine-Pyrrole 2,3,-Dioxygenase/deficiency
- Indoleamine-Pyrrole 2,3,-Dioxygenase/genetics
- Indoleamine-Pyrrole 2,3,-Dioxygenase/physiology
- Interferon-gamma/biosynthesis
- Interferon-gamma/genetics
- Kynurenine/biosynthesis
- Kynurenine/physiology
- Liver Neoplasms, Experimental/chemically induced
- Liver Neoplasms, Experimental/enzymology
- Liver Neoplasms, Experimental/immunology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Neoplasm Proteins/genetics
- Neoplasm Proteins/physiology
- Pore Forming Cytotoxic Proteins/biosynthesis
- Pore Forming Cytotoxic Proteins/genetics
- Precancerous Conditions/chemically induced
- Precancerous Conditions/enzymology
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Regulatory/immunology
- Tumor Necrosis Factor-alpha/biosynthesis
- Tumor Necrosis Factor-alpha/genetics
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Affiliation(s)
- Yuhei Shibata
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takeshi Hara
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Junji Nagano
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Nobuhiko Nakamura
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Tomohiko Ohno
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Soranobu Ninomiya
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hiroyasu Ito
- Departments of Informative Clinical Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takuji Tanaka
- Departments of Tumor Pathology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kuniaki Saito
- Human Health Sciences, Graduate School of Medicine and Faculty of Medicine, Kyoto University, Kyoto, Japan
| | - Mitsuru Seishima
- Departments of Informative Clinical Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Masahito Shimizu
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hisataka Moriwaki
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hisashi Tsurumi
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
- * E-mail:
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Abstract
Nowadays, people pay more and more attention to the natural products based on their multiple targets in the antitumor treatment. In our previous research, Rhizoma paridis saponins (RPS) were regarded as potent anticancer agent that elicits programmed cell death and inhibits metastases in murine lung adenocarcinoma in vivo. In the present study, we set up a rat model of diethylnitrosamine (DEN) induced pulmonary adenoma to evaluate the antitumor effects of RPS again. After 20 weeks treatment, rats were sacrificed in order to perform histopathological examinations, blood biochemistry, immunohistochemistry, western blot, PCR and metabonomics. As a result, DEN induced pulmonary adenoma generation in the lungs and damaged hepatocytes and hepatoma formation in the livers. RPS effectively attenuated hepatotoxic and inhibited pulmonary adenoma through down-regulating expression of MMP-9 and up-regulating level of TIMP-2 in DEN-induced rats. Meanwhile, RPS remarkably decreased energy metabolism, and glycine, serine and threonine metabolism to block the tumor growth. In conclusion, RPS would be a potent anticancer agent used in the prospective application.
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Affiliation(s)
- Shuli Man
- Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China; Tianjin Key Laboratory of Industry Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Jing Li
- Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wei Fan
- Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Hongyan Chai
- Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Zhen Liu
- Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wenyuan Gao
- Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China; Tianjin Key Laboratory of Industry Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China; Tianjin Key Laboratory for Modern Drug Delivery and High Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
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Welge WA, Barton JK. Expanding Functionality of Commercial Optical Coherence Tomography Systems by Integrating a Custom Endoscope. PLoS One 2015; 10:e0139396. [PMID: 26418811 PMCID: PMC4587965 DOI: 10.1371/journal.pone.0139396] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 09/12/2015] [Indexed: 11/19/2022] Open
Abstract
Optical coherence tomography (OCT) is a useful imaging modality for detecting and monitoring diseases of the gastrointestinal tract and other tubular structures. The non-destructiveness of OCT enables time-serial studies in animal models. While turnkey commercial research OCT systems are plenty, researchers often require custom imaging probes. We describe the integration of a custom endoscope with a commercial swept-source OCT system and generalize this description to any imaging probe and OCT system. A numerical dispersion compensation method is also described. Example images demonstrate that OCT can visualize the mouse colon crypt structure and detect adenoma in vivo.
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Affiliation(s)
- Weston A. Welge
- College of Optical Sciences, The University of Arizona, Tucson, Arizona, United States of America
| | - Jennifer K. Barton
- College of Optical Sciences, The University of Arizona, Tucson, Arizona, United States of America
- Department of Biomedical Engineering, The University of Arizona, Tucson, Arizona, United States of America
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Child CJ, Conroy D, Zimmermann AG, Woodmansee WW, Erfurth EM, Robison LL. Incidence of primary cancers and intracranial tumour recurrences in GH-treated and untreated adult hypopituitary patients: analyses from the Hypopituitary Control and Complications Study. Eur J Endocrinol 2015; 172:779-90. [PMID: 25810462 DOI: 10.1530/eje-14-1123] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 03/25/2015] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Speculation remains that GH treatment is associated with increased neoplasia risk. Studies in GH-treated childhood cancer survivors suggested higher rates of second neoplasms, while cancer risk data for GH-treated and untreated hypopituitary adults have been variable. We present primary cancer risk data from the Hypopituitary Control and Complications Study (HypoCCS) with a focus on specific cancers, and assessment of recurrence rates for pituitary adenomas (PA) and craniopharyngiomas (CP). DESIGN Incident neoplasms during HypoCCS were evaluated in 8418 GH-treated vs 1268 untreated patients for primary malignancies, 3668 GH-treated vs 720 untreated patients with PA history, and 956 GH-treated vs 102 untreated patients with CP history. METHODS Using population cancer rates, standardised incidence ratios (SIRs) were calculated for all primary cancers, breast, prostate, and colorectal cancers. Neoplasm rates in GH-treated vs untreated patients were analysed after propensity score adjustment of baseline treatment group imbalances. RESULTS During mean follow-up of 4.8 years, 225 primary cancers were identified in GH-treated patients, with SIR of 0.82 (95% CI 0.71-0.93). SIRs (95% CI) for GH-treated patients were 0.59 (0.36-0.90) for breast, 0.80 (0.57-1.10) for prostate, and 0.62 (0.38-0.96) for colorectal cancers. Cancer risk was not statistically different between GH-treated and untreated patients (relative risk (RR)=1.00 (95% CI 0.70-1.41), P=0.98). Adjusted RR for recurrence was 0.91 (0.68-1.22), P=0.53 for PA and 1.32 (0.53-3.31), P=0.55 for CP. CONCLUSIONS There was no increased risk for all-site cancers: breast, prostate or colorectal primary cancers in GH-treated patients during HypoCCS. GH treatment did not increase the risk of PA and CP recurrences.
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Affiliation(s)
- Christopher J Child
- Lilly Research LaboratoriesErl Wood Manor, Windlesham, Surrey GU20 6PH, UKinVentiv Health ClinicalBurlington, Massachusetts 01803 USALilly Research LaboratoriesIndianapolis, Indiana 46285, USADivision of EndocrinologyDiabetes and Hypertension, Brigham and Women's Hospital/Harvard Medical School, Boston, Massachusetts 02115, USADepartment of EndocrinologySkånes University Hospital, Lund 221 85, SwedenDepartment of Epidemiology and Cancer ControlSt Jude Children's Research Hospital, Memphis, Tennessee 38105-3678, USA
| | - Daniel Conroy
- Lilly Research LaboratoriesErl Wood Manor, Windlesham, Surrey GU20 6PH, UKinVentiv Health ClinicalBurlington, Massachusetts 01803 USALilly Research LaboratoriesIndianapolis, Indiana 46285, USADivision of EndocrinologyDiabetes and Hypertension, Brigham and Women's Hospital/Harvard Medical School, Boston, Massachusetts 02115, USADepartment of EndocrinologySkånes University Hospital, Lund 221 85, SwedenDepartment of Epidemiology and Cancer ControlSt Jude Children's Research Hospital, Memphis, Tennessee 38105-3678, USA
| | - Alan G Zimmermann
- Lilly Research LaboratoriesErl Wood Manor, Windlesham, Surrey GU20 6PH, UKinVentiv Health ClinicalBurlington, Massachusetts 01803 USALilly Research LaboratoriesIndianapolis, Indiana 46285, USADivision of EndocrinologyDiabetes and Hypertension, Brigham and Women's Hospital/Harvard Medical School, Boston, Massachusetts 02115, USADepartment of EndocrinologySkånes University Hospital, Lund 221 85, SwedenDepartment of Epidemiology and Cancer ControlSt Jude Children's Research Hospital, Memphis, Tennessee 38105-3678, USA
| | - Whitney W Woodmansee
- Lilly Research LaboratoriesErl Wood Manor, Windlesham, Surrey GU20 6PH, UKinVentiv Health ClinicalBurlington, Massachusetts 01803 USALilly Research LaboratoriesIndianapolis, Indiana 46285, USADivision of EndocrinologyDiabetes and Hypertension, Brigham and Women's Hospital/Harvard Medical School, Boston, Massachusetts 02115, USADepartment of EndocrinologySkånes University Hospital, Lund 221 85, SwedenDepartment of Epidemiology and Cancer ControlSt Jude Children's Research Hospital, Memphis, Tennessee 38105-3678, USA
| | - Eva Marie Erfurth
- Lilly Research LaboratoriesErl Wood Manor, Windlesham, Surrey GU20 6PH, UKinVentiv Health ClinicalBurlington, Massachusetts 01803 USALilly Research LaboratoriesIndianapolis, Indiana 46285, USADivision of EndocrinologyDiabetes and Hypertension, Brigham and Women's Hospital/Harvard Medical School, Boston, Massachusetts 02115, USADepartment of EndocrinologySkånes University Hospital, Lund 221 85, SwedenDepartment of Epidemiology and Cancer ControlSt Jude Children's Research Hospital, Memphis, Tennessee 38105-3678, USA
| | - Leslie L Robison
- Lilly Research LaboratoriesErl Wood Manor, Windlesham, Surrey GU20 6PH, UKinVentiv Health ClinicalBurlington, Massachusetts 01803 USALilly Research LaboratoriesIndianapolis, Indiana 46285, USADivision of EndocrinologyDiabetes and Hypertension, Brigham and Women's Hospital/Harvard Medical School, Boston, Massachusetts 02115, USADepartment of EndocrinologySkånes University Hospital, Lund 221 85, SwedenDepartment of Epidemiology and Cancer ControlSt Jude Children's Research Hospital, Memphis, Tennessee 38105-3678, USA
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Hashizume O, Yamanashi H, Taketo MM, Nakada K, Hayashi JI. A specific nuclear DNA background is required for high frequency lymphoma development in transmitochondrial mice with G13997A mtDNA. PLoS One 2015; 10:e0118561. [PMID: 25738506 PMCID: PMC4349826 DOI: 10.1371/journal.pone.0118561] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 01/20/2015] [Indexed: 11/19/2022] Open
Abstract
We previously found that mouse mitochondrial DNA (mtDNA) with a G13997A mutation (G13997A mtDNA) controls not only the transformation of cultured lung carcinoma cells from poorly metastatic into highly metastatic cells, but also the transformation of lymphocytes into lymphomas in living C57BL/6 (B6) mice. Because the nuclear genetic background of the B6 strain makes the strain prone to develop lymphomas, here we examined whether G13997A mtDNA independently induces lymphoma development even in mice with the nuclear genetic background of the A/J strain, which is not prone to develop lymphomas. Our results showed that the B6 nuclear genetic background is required for frequent lymphoma development in mice with G13997A mtDNA. Moreover, G13997A mtDNA in mice did not enhance the malignant transformation of lung adenomas into adenocarcinomas or that of hepatocellular carcinomas from poorly metastatic into highly metastatic carcinomas. Therefore, G13997A mtDNA enhances the frequency of lymphoma development under the abnormalities in the B6 nuclear genome, and does not independently control tumor development and tumor progression.
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Affiliation(s)
- Osamu Hashizume
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - Haruka Yamanashi
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - Makoto M. Taketo
- Department of Pharmacology, Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyou-ku, Kyoto, Japan
| | - Kazuto Nakada
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - Jun-Ichi Hayashi
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
- TARA center, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
- * E-mail:
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Nakanishi M, Perret C, Meuillet EJ, Rosenberg DW. Non-cell autonomous effects of targeting inducible PGE2 synthesis during inflammation-associated colon carcinogenesis. Carcinogenesis 2015; 36:478-86. [PMID: 25634334 DOI: 10.1093/carcin/bgv004] [Citation(s) in RCA: 7] [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] [Received: 09/05/2014] [Accepted: 01/14/2015] [Indexed: 12/21/2022] Open
Abstract
Microsomal PGE2 synthase-1 (mPGES-1), the terminal enzyme in the formation of inducible PGE2, represents a potential target for cancer chemoprevention. We have previously shown that genetic abrogation of mPGES-1 significantly suppresses tumorigenesis in two preclinical models of intestinal cancer. In this study, we examined the role of mPGES-1 during colon tumorigenesis in the presence of dextran sulfate sodium (DSS)-induced inflammatory microenvironment. Using Apc (Δ14/+) in which the mPGES-1 gene is either wild-type (D14:WT) or deleted (D14:KO), we report that mPGES-1 deficiency enhances sensitivity to acute mucosal injury. As a result of the increased epithelial damage, protection against adenoma formation is unexpectedly compromised in the D14:KO mice. Examining the DSS-induced acute injury, cryptal structures are formed within inflamed areas of colonic mucosa of both genotypes that display the hallmarks of early neoplasia. When acute epithelial injury is balanced by titration of DSS exposures, however, these small cryptal lesions progress rapidly to adenomas in the D14:WT mice. Given that mPGES-1 is highly expressed within the intestinal stroma under the inflammatory conditions of DSS-induced ulceration, we propose a complex and dual role for inducible PGE2 synthesis within the colonic mucosa. Our data suggest that inducible PGE2 is critical for the maintenance of an intact colonic epithelial barrier, while promoting epithelial regeneration. This function is exploited during neoplastic transformation in Apc (Δ14/+) mice as PGE2 contributes to the growth and expansion of the early initiated cryptal structures. Taken together, inducible PGE2 plays a complex role in inflammation-associated cancers that requires further analysis. Inducible PGE2 production by mPGES-1 is critical for the colonic mucosal homeostasis. This function is exploited in the presence of the neoplastic transformation in Apc (Δ14/+) mice as PGE2 contributes to the growth and expansion of the early cryptal structures.
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Affiliation(s)
- Masako Nakanishi
- Center for Molecular Medicine, University of Connecticut Health Center, Farmington, CT, USA, Inserm, U1016, département endocrinologie métabolisme et cancer, Institut Cochin, Paris, France and The University of Arizona Cancer Center, Department of Molecular and Cell Biology, Department of Nutritional Sciences, University of Arizona, Tucson, AZ, USA. Tucson, AZ, USA
| | - Christine Perret
- Center for Molecular Medicine, University of Connecticut Health Center, Farmington, CT, USA, Inserm, U1016, département endocrinologie métabolisme et cancer, Institut Cochin, Paris, France and
| | - Emmanuelle J Meuillet
- The University of Arizona Cancer Center, Department of Molecular and Cell Biology, Department of Nutritional Sciences, University of Arizona, Tucson, AZ, USA. Tucson, AZ, USA
| | - Daniel W Rosenberg
- Center for Molecular Medicine, University of Connecticut Health Center, Farmington, CT, USA, Inserm, U1016, département endocrinologie métabolisme et cancer, Institut Cochin, Paris, France and The University of Arizona Cancer Center, Department of Molecular and Cell Biology, Department of Nutritional Sciences, University of Arizona, Tucson, AZ, USA. Tucson, AZ, USA
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Marrag I, Hajji K. Adénome à prolactine induit par les antipsychotiques. Pan Afr Med J 2015; 22:341. [PMID: 26977248 PMCID: PMC4773060 DOI: 10.11604/pamj.2015.22.341.8235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 11/12/2015] [Indexed: 11/29/2022] Open
Affiliation(s)
- Ilyes Marrag
- Service de Psychiatrie, CHU Taher Sfar, Mahdia, 5100 Mahdia, Tunisie
| | - Kilani Hajji
- Service de Psychiatrie, CHU Taher Sfar, Mahdia, 5100 Mahdia, Tunisie
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Keenan MR, Leung SJ, Rice PS, Wall RA, Barton JK. Dual optical modality endoscopic imaging of cancer development in the mouse colon. Lasers Surg Med 2015; 47:30-9. [PMID: 25449147 PMCID: PMC4304897 DOI: 10.1002/lsm.22307] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/16/2014] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND OBJECTIVE We utilize a miniature, dual-modality endoscope that combines fluorescence-based surface magnifying chromoendoscopy (SMC) and optical coherence tomography (OCT) to follow the anatomical changes that occur during adenoma development in the mouse colon. MATERIALS AND METHODS Twenty-five mice were treated with the carcinogen azoxymethane (AOM) to induce tumor development in the distal colon, or were treated with saline as control, and were imaged over six months. OCT detects adenoma number with high sensitivity and specificity and can measure lesion size. In methylene blue-lavaged colons, SMC detects changes in the colonic crypts. SMC images of control mouse colons exhibit reticulated patterns of crypts of equal size, forming either a dot or honeycomb pattern. RESULTS Images of AOM-treated colons show mild crypt irregularities even in grossly normal tissue. Images of small to medium adenoma exhibit larger crypts, more intense signal, and irregular spacing whereas those of large adenoma have heterogeneous, intense signal and loss of crypt structure. CONCLUSIONS The combination of OCT and SMC permits the detection of neoplastic events from the earliest stages of crypt irregularities before gross tissue changes are noted, through to measuring the growth of protruding adenoma.
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Affiliation(s)
- Molly R Keenan
- The University of Arizona, Department of Biomedical Engineering, 1657 E. Helen Street, 210240, Tucson, Arizona, 85721
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Pershing NLK, Lampson BL, Belsky JA, Kaltenbrun E, MacAlpine DM, Counter CM. Rare codons capacitate Kras-driven de novo tumorigenesis. J Clin Invest 2014; 125:222-33. [PMID: 25437878 DOI: 10.1172/jci77627] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 10/30/2014] [Indexed: 12/27/2022] Open
Abstract
The KRAS gene is commonly mutated in human cancers, rendering the encoded small GTPase constitutively active and oncogenic. This gene has the unusual feature of being enriched for rare codons, which limit protein expression. Here, to determine the effect of the rare codon bias of the KRAS gene on de novo tumorigenesis, we introduced synonymous mutations that converted rare codons into common codons in exon 3 of the Kras gene in mice. Compared with control animals, mice with at least 1 copy of this Kras(ex3op) allele had fewer tumors following carcinogen exposure, and this allele was mutated less often, with weaker oncogenic mutations in these tumors. This reduction in tumorigenesis was attributable to higher expression of the Kras(ex3op) allele, which induced growth arrest when oncogenic and exhibited tumor-suppressive activity when not mutated. Together, our data indicate that the inherent rare codon bias of KRAS plays an integral role in tumorigenesis.
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Balbo S, Johnson CS, Kovi RC, James-Yi SA, O'Sullivan MG, Wang M, Le CT, Khariwala SS, Upadhyaya P, Hecht SS. Carcinogenicity and DNA adduct formation of 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone and enantiomers of its metabolite 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol in F-344 rats. Carcinogenesis 2014; 35:2798-806. [PMID: 25269804 PMCID: PMC4247520 DOI: 10.1093/carcin/bgu204] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [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] [Received: 03/14/2014] [Revised: 08/19/2014] [Accepted: 08/28/2014] [Indexed: 12/28/2022] Open
Abstract
4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) is metabolized to enantiomers of 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL), found in the urine of virtually all people exposed to tobacco products. We assessed the carcinogenicity in male F-344 rats of (R)-NNAL (5 ppm in drinking water), (S)-NNAL (5 ppm), NNK (5 ppm) and racemic NNAL (10 ppm) and analyzed DNA adduct formation in lung and pancreas of these rats after 10, 30, 50 and 70 weeks of treatment. All test compounds induced a high incidence of lung tumors, both adenomas and carcinomas. NNK and racemic NNAL were most potent; (R)-NNAL and (S)-NNAL had equivalent activity. Metastasis was observed from primary pulmonary carcinomas to the pancreas, particularly in the racemic NNAL group. DNA adducts analyzed were O (2)-[4-(3-pyridyl)-4-oxobut-1-yl]thymidine (O (2)-POB-dThd), 7-[4-(3-pyridyl)-4-oxobut-1-yl]guanine(7-POB-Gua),O (6)-[4-(3-pyridyl)-4-oxobut-1-yl]deoxyguanosine(O (6)-POB-dGuo),the 4-(3-pyridyl)-4-hydroxybut-1-yl(PHB)adductsO (2)-PHB-dThd and 7-PHB-Gua, O (6)-methylguanine (O (6)-Me-Gua) and 4-hydroxy-1-(3-pyridyl)-1-butanone (HPB)-releasing adducts. Adduct levels significantly decreased with time in the lungs of rats treated with NNK. Pulmonary POB-DNA adducts and O (6)-Me-Gua were similar in rats treated with NNK and (S)-NNAL; both were significantly greater than in the (R)-NNAL rats. In contrast, pulmonary PHB-DNA adduct levels were greatest in the rats treated with (R)-NNAL. Total pulmonary DNA adduct levels were similar in (S)-NNAL and (R)-NNAL rats. Similar trends were observed for DNA adducts in the pancreas, but adduct levels were significantly lower than in the lung. The results of this study clearly demonstrate the potent pulmonary carcinogenicity of both enantiomers of NNAL in rats and provide important new information regarding DNA damage by these compounds in lung and pancreas.
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Affiliation(s)
- Silvia Balbo
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Charles S Johnson
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Ramesh C Kovi
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Sandra A James-Yi
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | | | - Mingyao Wang
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Chap T Le
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Samir S Khariwala
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Pramod Upadhyaya
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Stephen S Hecht
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
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Leitzman P, Narayanapillai SC, Balbo S, Zhou B, Upadhyaya P, Shaik AA, O'Sullivan MG, Hecht SS, Lu J, Xing C. Kava blocks 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone-induced lung tumorigenesis in association with reducing O6-methylguanine DNA adduct in A/J mice. Cancer Prev Res (Phila) 2014; 7:86-96. [PMID: 24403291 DOI: 10.1158/1940-6207.capr-13-0301] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [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: 01/10/2023]
Abstract
We previously reported the chemopreventive potential of kava against 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK)- and benzo(a)pyrene (BaP)-induced lung tumorigenesis in A/J mice during the initiation and postinitiation stages. In this study, we investigated the tumorigenesis-stage specificity of kava, the potential active compounds, and the underlying mechanisms in NNK-induced lung tumorigenesis in A/J mice. In the first experiment, NNK-treated mice were given diets containing kava at a dose of 5 mg/g of diet during different periods. Kava treatments covering the initiation stage reduced the multiplicity of lung adenomas by approximately 99%. A minimum effective dose is yet to be defined because kava at two lower dosages (2.5 and 1.25 mg/g of diet) were equally effective as 5 mg/g of diet in completely inhibiting lung adenoma formation. Daily gavage of kava (one before, during, and after NNK treatment) completely blocked lung adenoma formation as well. Kavalactone-enriched fraction B fully recapitulated kava's chemopreventive efficacy, whereas kavalactone-free fractions A and C were much less effective. Mechanistically, kava and fraction B reduced NNK-induced DNA damage in lung tissues with a unique and preferential reduction in O(6)-methylguanine (O(6)-mG), the highly tumorigenic DNA damage by NNK, correlating and predictive of efficacy on blocking lung adenoma formation. Taken together, these results demonstrate the outstanding efficacy of kava in preventing NNK-induced lung tumorigenesis in A/J mice with high selectivity for the initiation stage in association with the reduction of O(6)-mG adduct in DNA. They also establish the knowledge basis for the identification of the active compound(s) in kava.
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Affiliation(s)
- Pablo Leitzman
- University of Minnesota, Department of Medicinal Chemistry, College of Pharmacy, 8-101 WDH, 308 Harvard Street SE, Minneapolis, MN 55455.
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Sargent LM, Porter DW, Staska LM, Hubbs AF, Lowry DT, Battelli L, Siegrist KJ, Kashon ML, Mercer RR, Bauer AK, Chen BT, Salisbury JL, Frazer D, McKinney W, Andrew M, Tsuruoka S, Endo M, Fluharty KL, Castranova V, Reynolds SH. Promotion of lung adenocarcinoma following inhalation exposure to multi-walled carbon nanotubes. Part Fibre Toxicol 2014; 11:3. [PMID: 24405760 PMCID: PMC3895742 DOI: 10.1186/1743-8977-11-3] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 11/06/2013] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Engineered carbon nanotubes are currently used in many consumer and industrial products such as paints, sunscreens, cosmetics, toiletries, electronic processes and industrial lubricants. Carbon nanotubes are among the more widely used nanoparticles and come in two major commercial forms, single-walled carbon nanotubes (SWCNT) and the more rigid, multi-walled carbon nanotubes (MWCNT). The low density and small size of these particles makes respiratory exposures likely. Many of the potential health hazards have not been investigated, including their potential for carcinogenicity. We, therefore, utilized a two stage initiation/promotion protocol to determine whether inhaled MWCNT act as a complete carcinogen and/or promote the growth of cells with existing DNA damage. Six week old, male, B6C3F1 mice received a single intraperitoneal (ip) injection of either the initiator methylcholanthrene(MCA, 10 μg/g BW, i.p.), or vehicle (corn oil). One week after i.p. injections, mice were exposed by inhalation to MWCNT (5 mg/m³, 5 hours/day, 5 days/week) or filtered air (controls) for a total of 15 days. At 17 months post-exposure, mice were euthanized and examined for lung tumor formation. RESULTS Twenty-three percent of the filtered air controls, 26.5% of the MWCNT-exposed, and 51.9% of the MCA-exposed mice, had lung bronchiolo-alveolar adenomas and lung adenocarcinomas. The average number of tumors per mouse was 0.25, 0.81 and 0.38 respectively. By contrast, 90.5% of the mice which received MCA followed by MWCNT had bronchiolo-alveolar adenomas and adenocarcinomas with an average of 2.9 tumors per mouse 17 months after exposure. Indeed, 62% of the mice exposed to MCA followed by MWCNT had bronchiolo-alveolar adenocarcinomas compared to 13% of the mice that received filtered air, 22% of the MCA-exposed, or 14% of the MWCNT-exposed. Mice with early morbidity resulting in euthanasia had the highest rate of metastatic disease. Three mice exposed to both MCA and MWCNT that were euthanized early had lung adenocarcinoma with evidence of metastasis (5.5%). Five mice (9%) exposed to MCA and MWCNT and 1 (1.6%) exposed to MCA developed serosal tumors morphologically consistent with sarcomatous mesotheliomas, whereas mice administered MWCNT or air alone did not develop similar neoplasms. CONCLUSIONS These data demonstrate that some MWCNT exposures promote the growth and neoplastic progression of initiated lung cells in B6C3F1 mice. In this study, the mouse MWCNT lung burden of 31.2 μg/mouse approximates feasible human occupational exposures. Therefore, the results of this study indicate that caution should be used to limit human exposures to MWCNT.
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Affiliation(s)
- Linda M Sargent
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Dale W Porter
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | | | - Ann F Hubbs
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - David T Lowry
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Lori Battelli
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Katelyn J Siegrist
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Michael L Kashon
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Robert R Mercer
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | | | - Bean T Chen
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | | | - David Frazer
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Walter McKinney
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Michael Andrew
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | | | | | - Kara L Fluharty
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Vince Castranova
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Steven H Reynolds
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
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Müller MF, Florian S, Pommer S, Osterhoff M, Esworthy RS, Chu FF, Brigelius-Flohé R, Kipp AP. Deletion of glutathione peroxidase-2 inhibits azoxymethane-induced colon cancer development. PLoS One 2013; 8:e72055. [PMID: 23977205 PMCID: PMC3747154 DOI: 10.1371/journal.pone.0072055] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Accepted: 07/08/2013] [Indexed: 12/24/2022] Open
Abstract
The selenoprotein glutathione peroxidase-2 (GPx2) appears to have a dual role in carcinogenesis. While it protected mice from colon cancer in a model of inflammation-triggered carcinogenesis (azoxymethane and dextran sodium sulfate treatment), it promoted growth of xenografted tumor cells. Therefore, we analyzed the effect of GPx2 in a mouse model mimicking sporadic colorectal cancer (azoxymethane-treatment only). GPx2-knockout (KO) and wild-type (WT) mice were adjusted to an either marginally deficient (−Se), adequate (+Se), or supranutritional (++Se) selenium status and were treated six times with azoxymethane (AOM) to induce tumor development. In the −Se and ++Se groups, the number of tumors was significantly lower in GPx2-KO than in respective WT mice. On the +Se diet, the number of dysplastic crypts was reduced in GPx2-KO mice. This may be explained by more basal and AOM-induced apoptotic cell death in GPx2-KO mice that eliminates damaged or pre-malignant epithelial cells. In WT dysplastic crypts GPx2 was up-regulated in comparison to normal crypts which might be an attempt to suppress apoptosis. In contrast, in the +Se groups tumor numbers were similar in both genotypes but tumor size was larger in GPx2-KO mice. The latter was associated with an inflammatory and tumor-promoting environment as obvious from infiltrated inflammatory cells in the intestinal mucosa of GPx2-KO mice even without any treatment and characterized as low-grade inflammation. In WT mice the number of tumors tended to be lowest in +Se compared to −Se and ++Se feeding indicating that selenium might delay tumorigenesis only in the adequate status. In conclusion, the role of GPx2 and presumably also of selenium depends on the cancer stage and obviously on the involvement of inflammation.
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Affiliation(s)
- Mike F. Müller
- Department Biochemistry of Micronutrients, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Simone Florian
- Department Biochemistry of Micronutrients, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Stefanie Pommer
- Department Biochemistry of Micronutrients, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Martin Osterhoff
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - R. Steven Esworthy
- Department of Radiation Biology, Beckman Research Institute of City of Hope, Duarte, California, United States of America
| | - Fong-Fong Chu
- Department of Radiation Biology, Beckman Research Institute of City of Hope, Duarte, California, United States of America
| | - Regina Brigelius-Flohé
- Department Biochemistry of Micronutrients, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Anna P. Kipp
- Department Biochemistry of Micronutrients, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
- * E-mail:
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44
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Rehulka J. Testicular tumour in northern pike, Esox lucius L. J Fish Dis 2013; 36:669-673. [PMID: 23347227 DOI: 10.1111/jfd.12045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Accepted: 09/24/2012] [Indexed: 06/01/2023]
Affiliation(s)
- J Rehulka
- Department of Zoology, Silesian Museum, Opava, Czech Republic.
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Iwata KI, Yamada Y, Nakata A, Oghiso Y, Tani S, Doi K, Morioka T, Blyth BJ, Nishimura M, Kakinuma S, Shimada Y. Co-operative effects of thoracic X-ray irradiation and N-nitrosobis(2-hydroxypropyl) amine administration on lung tumorigenesis in neonatal, juvenile and adult Wistar rats. Toxicol Appl Pharmacol 2013; 267:266-75. [PMID: 23337358 DOI: 10.1016/j.taap.2012.12.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Revised: 12/27/2012] [Accepted: 12/30/2012] [Indexed: 11/19/2022]
Abstract
Assessment of risks associated with childhood exposure to ionizing radiation when combined with chemical carcinogens is of great importance. We studied the age-dependence of the effect of combined exposure to ionizing radiation (IR) and a chemical carcinogen on lung carcinogenesis. Female 1-, 5-, and 22-week-old Wistar rats were locally irradiated on the thorax with X-rays (3.18 Gy) and/or were injected intraperitoneally with N-nitrosobis(2-hydroxypropyl)amine (BHP) (1g/kg body weight) 1 week after X-ray exposure or at 23 weeks of age. Rats were terminated at 90 weeks of age. We found that: (i) the incidence of lung tumors (adenoma and adenocarcinoma) increased slightly as a function of age at X-ray exposure, although this was not statistically significant, while the incidence induced by BHP decreased with increasing age at administration; (ii) combined exposure to X-rays at 5 or 22 weeks with BHP 1 week later enhanced the tumor incidence, and the effect at early-life stage (5 weeks irradiation) was more effective than that at late-life stage (22 weeks irradiation); (iii) combined exposure preferentially enhanced malignant transformation; (iv) although a longer interval between the X-ray and BHP treatments reduced the combined effect, risks of early-life irradiation at 1 or 5 weeks of age lasted into adulthood; (v) adenomas and adenocarcinomas induced by X-ray and/or BHP originated from surfactant apoprotein A-positive alveolar type II cells; and (vi), extracellular signal-regulated kinase pathway activation was observed in half the adenocarcinomas, regardless of the exposure schedule. In conclusion, combined exposure may enhance lung tumorigenesis more synergistically at early-life stage (5 weeks of age) than later-life stage.
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Affiliation(s)
- Ken-ichi Iwata
- Radiobiology for Children's Health Program, Research Center for Radiation Protection, National Institute of Radiological Sciences, Anagawa 4-9-1, Inage-ku, Chiba 263-8555, Japan.
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Mutyal NN, Radosevich A, Tiwari AK, Stypula Y, Wali R, Kunte D, Roy HK, Backman V. Biological mechanisms underlying structural changes induced by colorectal field carcinogenesis measured with low-coherence enhanced backscattering (LEBS) spectroscopy. PLoS One 2013; 8:e57206. [PMID: 23431406 PMCID: PMC3576387 DOI: 10.1371/journal.pone.0057206] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2012] [Accepted: 01/22/2013] [Indexed: 12/26/2022] Open
Abstract
We previously reported the utility of Low-Coherence Enhanced Backscattering (LEBS) Spectroscopy in detecting optical changes in uninvolved rectal mucosa, changes that are indicative of the presence of advanced colorectal adenomas elsewhere in the colon (field carcinogenesis). We hypothesized that the alterations in optical signatures are due to structural changes in colonocytes. To elucidate those colonocyte changes, we used LEBS and an early time point in an animal model of colorectal field carcinogenesis – rats treated with azoxymethane (AOM). Changes in LEBS markers in intact mucosa from AOM-treated rats could be at least partially attributed to changes in colonocytes. To investigate the molecular mechanisms underlying the colonocyte abnormalities in premalignant colon, we took a candidate approach. We compared expression profiles of genes implicated directly or indirectly in cytoskeletal dysregulation in colorectal tissues from saline-treated versus AOM-treated rats. Our data suggest that a number of genes known to affect colon tumorigenesis are up-regulated in colonocytes, and genes previously reported to be tumor suppressors in metastatic cancer are down-regulated in colonocytes, despite the colonocytes being histologically normal. To further understand the role of the cytoskeleton in generating changes in optical markers of cells, we used pharmacological disruption (using colchicine) of the cytoskeleton. We found that differences in optical markers (between AOM- and control-treated rats) were negated by the disruption, suggesting cytoskeletal involvement in the optical changes. These studies provide significant insights into the micro-architectural alterations in early colon carcinogenesis, and may enable optimization of both bio-photonic and molecular risk stratification techniques to personalize colorectal cancer screening.
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Affiliation(s)
- Nikhil N. Mutyal
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois, United States of America
| | - Andrew Radosevich
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois, United States of America
| | - Ashish K. Tiwari
- Department of Internal Medicine, NorthShore University Healthsystems, Evanston, Illinois, United States of America
| | - Yolanda Stypula
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois, United States of America
| | - Ramesh Wali
- Department of Internal Medicine, NorthShore University Healthsystems, Evanston, Illinois, United States of America
| | - Dhananjay Kunte
- Department of Internal Medicine, NorthShore University Healthsystems, Evanston, Illinois, United States of America
| | - Hemant K. Roy
- Department of Internal Medicine, NorthShore University Healthsystems, Evanston, Illinois, United States of America
- * E-mail:
| | - Vadim Backman
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois, United States of America
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Schwitalla S, Ziegler PK, Horst D, Becker V, Kerle I, Begus-Nahrmann Y, Lechel A, Rudolph KL, Langer R, Slotta-Huspenina J, Bader FG, Prazeres da Costa O, Neurath MF, Meining A, Kirchner T, Greten FR. Loss of p53 in enterocytes generates an inflammatory microenvironment enabling invasion and lymph node metastasis of carcinogen-induced colorectal tumors. Cancer Cell 2013; 23:93-106. [PMID: 23273920 DOI: 10.1016/j.ccr.2012.11.014] [Citation(s) in RCA: 209] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 09/17/2012] [Accepted: 11/26/2012] [Indexed: 12/14/2022]
Abstract
Loss of p53 is considered to allow progression of colorectal tumors from the adenoma to the carcinoma stage. Using mice with an intestinal epithelial cell (IEC)-specific p53 deletion, we demonstrate that loss of p53 alone is insufficient to initiate intestinal tumorigenesis but markedly enhances carcinogen-induced tumor incidence and leads to invasive cancer and lymph node metastasis. Whereas p53 controls DNA damage and IEC survival during the initiation stage, loss of p53 during tumor progression is associated with increased intestinal permeability, causing formation of an NF-κB-dependent inflammatory microenvironment and the induction of epithelial-mesenchymal transition. Thus, we propose a p53-controlled tumor-suppressive function that is independent of its well-established role in cell-cycle regulation, apoptosis, and senescence.
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Affiliation(s)
- Sarah Schwitalla
- Institute of Molecular Immunology, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
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Wang XY, Jensen-Taubman SM, Keefe KM, Yang D, Linnoila RI. Achaete-scute complex homolog-1 promotes DNA repair in the lung carcinogenesis through matrix metalloproteinase-7 and O(6)-methylguanine-DNA methyltransferase. PLoS One 2012; 7:e52832. [PMID: 23300791 PMCID: PMC3530493 DOI: 10.1371/journal.pone.0052832] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 11/21/2012] [Indexed: 11/19/2022] Open
Abstract
Lung cancer is the leading cause of cancer-related deaths in the world. Achaete-scute complex homolog-1 (Ascl1) is a member of the basic helix-loop-helix (bHLH) transcription factor family that has multiple functions in the normal and neoplastic lung such as the regulation of neuroendocrine differentiation, prevention of apoptosis and promotion of tumor-initiating cells. We now show that Ascl1 directly regulates matrix metalloproteinase-7 (MMP-7) and O(6)-methylguanine-DNA methyltransferase (MGMT). Loss- and gain-of-function experiments in human bronchial epithelial and lung carcinoma cell lines revealed that Ascl1, MMP-7 and MGMT are able to protect cells from the tobacco-specific nitrosamine NNK-induced DNA damage and the alkylating agent cisplatin-induced apoptosis. We also examined the role of Ascl1 in NNK-induced lung tumorigenesis in vivo. Using transgenic mice which constitutively expressed human Ascl1 in airway lining cells, we found that there was a delay in lung tumorigenesis. We conclude that Ascl1 potentially enhances DNA repair through activation of MMP-7 and MGMT which may impact lung carcinogenesis and chemoresistance. The study has uncovered a novel and unexpected function of Ascl1 which will contribute to better understanding of lung carcinogenesis and the broad implications of transcription factors in tobacco-related carcinogenesis.
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Affiliation(s)
- Xiao-Yang Wang
- Cell and Cancer Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Sandra M. Jensen-Taubman
- Cell and Cancer Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Kathleen M. Keefe
- Cell and Cancer Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Danlei Yang
- Cell and Cancer Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - R. Ilona Linnoila
- Cell and Cancer Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
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Ueno T, Imaida K, Yoshimoto M, Hayakawa T, Takahashi M, Imai T, Yanaka A, Tsuta K, Komiya M, Wakabayashi K, Mutoh M. Non-invasive X-ray micro-computed tomographic evaluation of indomethacin on urethane-induced lung carcinogenesis in mice. Anticancer Res 2012; 32:4773-4780. [PMID: 23155242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND Lung cancer is the leading cause of cancer-related death worldwide. We previously reported that respiration-gated X-ray micro-computed tomography (micro-CT) is a useful tool for analyzing lung tumor development in animal models. MATERIALS AND METHODS Lung tumors were induced by a single intraperitoneal injection (250 mg/kg) of urethane in male A/J mice, followed by indomethacin treatment at 5 ppm in the diet. The mice were scanned by micro-CT every 4 weeks from 10 to 26 weeks after urethane administration. RESULTS Total incidence and multiplicity of lung tumors were not significantly reduced by indomethacin treatment, as compared with untreated mice. However, the incidence of adenocarcinoma tended to be reduced by indomethacin treatment. Moreover, the size of lung tumors, especially adenomas, was suppressed by indomethacin treatment. Micro-CT analysis revealed that indomethacin effectively suppressed tumor development after urethane treatment for 10 weeks. CONCLUSION These findings indicate that indomethacin suppresses lung carcinogenesis in mice and micro-CT is a useful non-invasive imaging approach for evaluating the characteristics and suppression of lung tumors in mice treated with cancer chemopreventive agents.
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Affiliation(s)
- Toshiya Ueno
- Division of Cancer Prevention Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
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Kissow H, Hartmann B, Holst JJ, Viby NE, Hansen LS, Rosenkilde MM, Hare KJ, Poulsen SS. Glucagon-like peptide-1 (GLP-1) receptor agonism or DPP-4 inhibition does not accelerate neoplasia in carcinogen treated mice. ACTA ACUST UNITED AC 2012; 179:91-100. [PMID: 22989472 DOI: 10.1016/j.regpep.2012.08.016] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Revised: 07/29/2012] [Accepted: 08/29/2012] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Glucagon-like peptide-1 (GLP-1) and glucagon-like peptide-2 (GLP-2) are secreted in parallel from the intestinal endocrine cells after nutrient intake. GLP-1 is an incretin hormone and analogues are available for the treatment of type 2 diabetes mellitus (T2DM). GLP-2 is an intestinal growth hormone and is shown to promote growth of colonic adenomas in carcinogen treated mice. Both peptides are degraded by dipeptidyl peptidase-4 (DPP-4) into inactive metabolites. DPP-4 inhibitors are therefore also in use for treatment of T2DM. It is possible that DPP-4 inhibition by enhancing the exposure of endogenous GLP-2 to the intestinal epithelia also might mediate growth and promote neoplasia. We investigated the intestinal growth effect of the GLP-1 receptor agonists (GLP-1 RAs) (liraglutide and exenatide) and DPP-4 inhibition (sitagliptin) in healthy mice. We also investigated the potential tumour promoting effect of liraglutide and sitaglitin in the colon of carcinogen treated mice. We used GLP-2 as a positive control. METHODS For the growth study we treated healthy CD1 mice with liraglutide (300 μg×2), exenatide (12.5 μg×2) or vehicle subcutaneously and sitagliptin (8mg×2) or water by oral gavage for 10 or 30 days. We measured intestinal weight, cross sectional area, villus height and crypt depth. For the tumour study we treated carcinogen treated mice (1,2 dimethylhydrazine 21 mg/kg/week for 12 weeks) with liraglutide (300 μg×2), Gly2-GLP-2 (25 μg×2) or vehicle subcutaneously and sitagliptin (8 mg×2) or water by oral gavage for 45 days. We counted aberrant crypt foci (ACF), mucin depleted foci (MDF) and adenomas in the colon. Using COS-7 cells transfected with a GLP-2 receptor, we tested if liraglutide or exenatide could activate the receptor. RESULTS In the 10 days experiment the relative small intestinal weight was increased with 56% in the liraglutide group (p<0.001) and 26% in the exenatide group (p<01) compared with vehicle treated mice. After 30 days of treatment, liraglutide did also increase the colonic weight (p<0.01). By morphometry the growth pattern mimicked that of GLP-2. Sitagliptin treatment had only a minor effect. In the carcinogen treated mice we found no increase of ACF in any of the groups, the numbers of MDF and adenomas after liraglutide and sitagliptin treatments were similar to their respective control groups. Neither liraglutide nor exenatide stimulated cAMP release from GLP-2 receptor transfected cells. CONCLUSION Both GLP-1 analogues were potent growth stimulators of the healthy mouse intestine. No agonism was found for GLP-1 RAs at the GLP-2 receptor. Despite of the growth effect, liraglutide did not promote dysplasia in the colon. Sitagliptin did not show any tumour promoting effects, and non considerable growth effects.
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MESH Headings
- 1,2-Dimethylhydrazine/administration & dosage
- 1,2-Dimethylhydrazine/adverse effects
- Aberrant Crypt Foci/pathology
- Adenoma/chemically induced
- Adenoma/metabolism
- Anatomy, Cross-Sectional
- Animals
- COS Cells
- Chlorocebus aethiops
- Colon/drug effects
- Colon/metabolism
- Colon/pathology
- Colonic Neoplasms/metabolism
- Colonic Neoplasms/pathology
- Cyclic AMP/metabolism
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Dipeptidyl Peptidase 4/blood
- Dipeptidyl-Peptidase IV Inhibitors/pharmacology
- Exenatide
- Female
- Glucagon-Like Peptide 1/analogs & derivatives
- Glucagon-Like Peptide 1/pharmacology
- Glucagon-Like Peptide-1 Receptor
- Glucagon-Like Peptide-2 Receptor
- Hypoglycemic Agents/pharmacology
- Intestinal Mucosa/drug effects
- Intestinal Mucosa/metabolism
- Intestinal Mucosa/pathology
- Intestine, Small/drug effects
- Intestine, Small/metabolism
- Intestine, Small/pathology
- Liraglutide
- Mice
- Mice, Inbred C57BL
- Organ Size
- Peptides/pharmacology
- Pyrazines/pharmacology
- Receptors, Glucagon/agonists
- Receptors, Glucagon/genetics
- Receptors, Glucagon/metabolism
- Sitagliptin Phosphate
- Transfection
- Triazoles/pharmacology
- Venoms/pharmacology
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Affiliation(s)
- Hannelouise Kissow
- Department of Biomedical Sciences, and The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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