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Obesity and breast cancer

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https://www.readbyqxmd.com/read/29052171/statin-use-and-breast-cancer-prognosis-in-black-and-white-women
#1
Amanda Leiter, Nina A Bickell, Derek LeRoith, Anupma Nayak, Sheldon M Feldman, Neil B Friedman, Alison Estabrook, Tari A King, Kezhen Fei, Rebeca Franco, Emily J Gallagher
Studies show decreased risk of breast cancer recurrence and improved survival with statin use, but data on racial disparities regarding breast cancer prognosis and statin use are lacking. Our objective was to investigate if racial disparities in breast cancer prognosis can be partially explained by differences in pre-diagnosis statin use. Patients were identified from a prospective, multicenter study examining the effects of metabolic factors on breast cancer prognosis in Black and White women. Statin use, prognosis (as measured by Nottingham Prognostic Index), anthropometric, tumor, and socio-demographic characteristics were examined...
October 19, 2017: Hormones & Cancer
https://www.readbyqxmd.com/read/29050221/pdgfra-hsd17b4-and-hmgb2-are-potential-therapeutic-targets-in-polycystic-ovarian-syndrome-and-breast-cancer
#2
Huiyu Xu, Yong Han, Jiaying Lou, Hongxian Zhang, Yue Zhao, Balázs Győrffy, Rong Li
To explore the key genes associated with both PCOS and breast cancer, we overlapped the synchronously differently expressed genes in two obese insulin-resistant GEO datasets in muscle tissue and genes exert essential roles in breast cancer prognosis together base on the following reasons: (1) Androgens excess is believed to contribute to the onset of both PCOS and breast cancer. (2) PCOS is usually complicated with metabolic symptoms, such as obesity and insulin-resistance. (3) Muscle is the main place where energy metabolism and material metabolism take place...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29048637/leptin-induces-ros-via-nox5-in-healthy-and-neoplastic-mammary-epithelial-cells
#3
Sinda Mahbouli, Audrey Der Vartanian, Sophie Ortega, Stéphanie Rougé, Marie-Paule Vasson, Adrien Rossary
NADPH oxidase (NOX) complexes (a family of seven isoforms) drive cellular ROS production in patho-logical processes such as cancer. NOX-driven ROS production is involved in cell mechanisms from signalling to oxidative stress. Leptin, an adipokine overexpressed in obese patients, has been investigated in studies on breast carcinogenesis, but its effects on oxidative stress remain largely unexplored, especially in breast cancer. The study used three human mammary epithelial cell models presenting different neoplastic status (healthy primary HMECs, neoplastic MCF-7 cells and neoplastic MDA-MB-231 cells) to determine the effects of leptin on short-term ROS production and to characterize the enzymes involved...
September 27, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29045658/exendin-4-a-glucagon-like-peptide-1-receptor-agonist-attenuates-breast-cancer-growth-by-inhibiting-nf-%C3%AE%C2%BAb-activation
#4
Chikayo Iwaya, Takashi Nomiyama, Shiho Komatsu, Takako Kawanami, Yoko Tsutsumi, Yuriko Hamaguchi, Tsuyoshi Horikawa, Yasuteru Yoshinaga, Shinichi Yamashita, Tomoko Tanaka, Yuichi Terawaki, Makito Tanabe, Kazuki Nabeshima, Akinori Iwasaki, Toshihiko Yanase
Incretin therapies have received significant attention because of their tissue-protective effects, which extend beyond those associated with glycemic control. Cancer is a primary cause of death in patients with diabetes mellitus. We previously reported anti-prostate cancer effects of the glucagon-like peptide-1 (GLP-1) receptor (GLP-1R) agonist exendin-4 (Ex-4). Breast cancer is one of the most common cancers in female patients with type 2 diabetes mellitus and obesity. Thus, we examined whether GLP-1 action could attenuate breast cancer...
October 13, 2017: Endocrinology
https://www.readbyqxmd.com/read/29044475/the-site-of-care-matters-an-examination-of-the-relationship-between-high-medicaid-burden-hospitals-and-the-use-cost-and-complications-of-immediate-breast-reconstruction-after-mastectomy
#5
Anaeze C Offodile, L Daniel Muldoon, Faiz Gani, Joseph K Canner, Lisa K Jacobs
BACKGROUND: Diminished use and worse outcomes after immediate breast reconstruction (IBR) have been documented for Medicaid beneficiaries. However, to the authors' knowledge, the contribution of patient clustering at hospitals with a high percentage of Medicaid patients to these inequalities in IBR delivery is unknown. METHODS: A cross-sectional analysis of patients undergoing IBR after mastectomy using the 2007 to 2011 Nationwide Inpatient Sample database was performed...
October 17, 2017: Cancer
https://www.readbyqxmd.com/read/29043480/body-mass-index-bmi-postoperative-appearance-satisfaction-and-sexual-function-in-breast-cancer-survivorship
#6
K E Rojas, N Matthews, C Raker, M A Clark, M Onstad, A Stuckey, J Gass
PURPOSE: We sought to explore the correlation between BMI and postoperative sexual function, body image, and breast-specific sensuality before and after breast cancer surgery. METHODS: A cross-sectional survey of patients at least 1 year from surgery employed the Female Sexual Function Index (FSFI) and investigator-generated questions. Patients who underwent lumpectomy (L), mastectomy (M), and mastectomy with reconstruction (MR) were compared across three BMI groups: normal weight, overweight, and obese...
October 17, 2017: Journal of Cancer Survivorship: Research and Practice
https://www.readbyqxmd.com/read/29042292/obesity-enhances-carcinogen-7-12-dimethylbenz-a-anthracene-induced-tumorigenesis-in-vitro-and-in-vivo
#7
Chia-Chien Hsieh, Shih-Han Peng, Mei-Jia Chou
Growing body of evidence shows that extra adiposity influences on the progression of multiple cancers, including breast cancer. The aim of this study is to investigate whether obesity correlates with mammary tumor development in vitro and in vivo. We found that obesity-related mediators, 3T3-L1 adipocyte conditioned medium, enhanced formation of cancerous foci induced by the carcinogen 7,12-Dimethylbenz[a]anthracene (DMBA) in NIH/3T3 fibroblasts, in vitro. Additionally, we tested the effect of obesity in mouse model of DMBA-induced breast cancer...
October 14, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29038151/obesity-and-cancer-evidence-impact-and-future-directions
#8
REVIEW
Graham A Colditz, Lindsay L Peterson
BACKGROUND: Mounting evidence, particularly from prospective epidemiologic studies but with additional support from animal models and mechanistic studies, supported conclusions in 2016 by the International Agency for Research on Cancer (IARC)(3) in their review of the preventive effects of weight control on cancer risk. CONTENT: The workgroup concluded that obesity is causally related to cancer at 13 anatomic sites (esophagus: adenocarcinoma; gastric cardia; colon and rectum; liver; gallbladder; pancreas; breast: postmenopausal; uterine endometrial; ovary; kidney: renal cell; meningioma; thyroid; and multiple myeloma)...
October 16, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/29031720/brown-adipocytes-can-display-a-mammary-basal-myoepithelial-cell-phenotype-in%C3%A2-vivo
#9
Li Li, Baoguo Li, Min Li, Chaoqun Niu, Guanlin Wang, Ting Li, Elżbieta Król, Wanzhu Jin, John R Speakman
OBJECTIVE: Previous work has suggested that white adipocytes may also show a mammary luminal secretory cell phenotype during lactation. The capacity of brown and beige/brite adipocytes to display a mammary cell phenotype and the levels at which they demonstrate such phenotypes in vivo is currently unknown. METHODS: To investigate the putative adipocyte origin of mammary gland cells, we performed genetic lineage-labeling experiments in BAT and the mammary glands...
October 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29031505/-histological-and-molecular-classification-of-endometrial-carcinoma-and-therapeutical-implications
#10
REVIEW
Catherine Genestie, Alexandra Leary, Mojgan Devassoux-Shisheboran, Aurélie Auguste
Endometrial cancer is the fourth cause of cancer in women in France and is the second most common cancer of the gynecologic cancer after breast cancer with 7275 new cases in 2012. The incidence of this neoplasm tends to increase with population aging, diabetes and obesity's augmentation. In rare cases, a hereditary factor has been described: Lynch's syndrome. The therapeutic management of the patient depends on the endometrial biopsy which specifies the histological type and the histo-prognostic grade as well as the MRI which allow the tumor staging...
October 11, 2017: Bulletin du Cancer
https://www.readbyqxmd.com/read/29024822/pubertally-initiated-high-fat-diet-promotes-mammary-tumorigenesis-in-obesity-prone-fvb-mice-similarly-to-obesity-resistant-balb-c-mice
#11
Yirong Zhu, Mark D Aupperlee, Sandra Z Haslam, Richard C Schwartz
Premenopausal breast cancer is associated with increased animal fat consumption among normal-weight but not overweight women. Our previous findings in obesity-resistant BALB/c mice showed that a diet high in saturated animal fat (HFD) promotes mammary tumorigenesis in both DMBA carcinogenesis and Trp53-null transplant models. Having made these observations in BALB/c mice, which have very modest HFD weight gain, we determined the effects of HFD in FVB mice, which gain significant weight on HFD. Three-week-old FVB mice fed a low-fat diet or HFD were subjected to 7,12-dimethylbenz[a]anthracene-induced carcinogenesis...
October 9, 2017: Translational Oncology
https://www.readbyqxmd.com/read/29024537/association-between-weight-gain-during-adjuvant-chemotherapy-for-early-stage-breast-cancer-and-survival-outcomes
#12
Gustavo Schvartsman, Angelica M Gutierrez-Barrera, Juhee Song, Naoto T Ueno, Susan K Peterson, Banu Arun
Obese and overweight women have an increased risk of breast cancer and worse outcomes at the time of diagnosis. Women tend to gain weight after breast cancer diagnosis and during chemotherapy for early-stage disease, which may in turn increase risk for worse outcomes. We examined if weight gained during adjuvant chemotherapy was associated with worse survival outcomes. We queried our database for data on patients who received adjuvant third-generation chemotherapy for early-stage breast cancer. Univariate and multivariate analyses by Cox regression were performed for survival outcomes across three categories according to BMI variation from start to end of chemotherapy: >0...
October 10, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/29021522/the-cholesterol-metabolite-27-hydroxycholesterol-facilitates-breast-cancer-metastasis-through-its-actions-on-immune-cells
#13
Amy E Baek, Yen-Rei A Yu, Sisi He, Suzanne E Wardell, Ching-Yi Chang, Sanghoon Kwon, Ruchita V Pillai, Hannah B McDowell, J Will Thompson, Laura G Dubois, Patrick M Sullivan, Jongsook K Kemper, Michael D Gunn, Donald P McDonnell, Erik R Nelson
Obesity and elevated circulating cholesterol are risk factors for breast cancer recurrence, while the use of statins, cholesterol biosynthesis inhibitors widely used for treating hypercholesterolemia, is associated with improved disease-free survival. Here, we show that cholesterol mediates the metastatic effects of a high-fat diet via its oxysterol metabolite, 27-hydroxycholesterol. Ablation or inhibition of CYP27A1, the enzyme responsible for the rate-limiting step in 27-hydroxycholesterol biosynthesis, significantly reduces metastasis in relevant animal models of cancer...
October 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/29017754/health-behavior-and-quality-of-life-outcome-in-breast-cancer-survivors-prevalence-rates-and-predictors
#14
Anne Oberguggenberger, Verena Meraner, Monika Sztankay, Anja Hilbert, Michael Hubalek, Bernhard Holzner, Eva Gamper, Georg Kemmler, Teresa Baumgartner, Isabelle Lackinger, Barbara Sperner-Unterweger, Barbara Mangweth-Matzek
PURPOSE: Health behavior (HB) has been identified as contributing to breast cancer (BC) disease outcome. The present study was subjected to gain more in-depth insight into breast cancer survivors' (BCS) HB and its associations with patient quality of life (QOL) outcome. We investigated HB focusing on eating disturbances comparing the latter with a reference population sample (PS). MATERIALS AND METHODS: The research cohort included 303 BCS completing a comprehensive patient-reported-outcome assessment on HB (eating disturbances, exercise, substance use) and QOL...
September 18, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28993797/the-linkage-between-breast-cancer-hypoxia-and-adipose-tissue
#15
REVIEW
Linda K Rausch, Nikolaus C Netzer, Josef Hoegel, Stephan Pramsohler
OBJECTIVE: The development of breast cancer cells is linked to hypoxia. The hypoxia-induced factor HIF-1α influences metastasis through neovascularization. Hypoxia seems to decrease the responsiveness to hormonal treatment due to loss of estrogen receptors (ERs). Obesity is discussed to increase hypoxia in adipocytes, which promotes a favorable environment for tumor cells in mammary fat tissue, whereas, tumor cells profit from good oxygen supply and are influenced by its deprivation as target regions within tumors show...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28992556/incidence-and-risk-factors-of-lymphedema-after-breast-cancer-treatment-10-years-of-follow-up
#16
Ana Carolina Padula Ribeiro Pereira, Rosalina Jorge Koifman, Anke Bergmann
PURPOSE: To evaluate the incidence and risk factors of lymphedema 10 years after surgical treatment for breast cancer. METHODS: Prospective observational hospital-based cohort of women undergoing axillary lymph node dissection. Lymphedema was assessed by indirect volume, measured by circumference, and diagnosed if there was a difference of 200 mL between the arms or if the patient was treated for it. Independent variables were patient, tumour and treatment characteristics...
October 6, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28991224/resistin-facilitates-breast-cancer-progression-via-tlr4-mediated-induction-of-mesenchymal-phenotypes-and-stemness-properties
#17
C-H Wang, P-J Wang, Y-C Hsieh, S Lo, Y-C Lee, Y-C Chen, C-H Tsai, W-C Chiu, S Chu-Sung Hu, C-W Lu, Y-F Yang, C-C Chiu, F Ou-Yang, Y-M Wang, M-F Hou, S-Sf Yuan
Growing evidence indicates that resistin-an obesity-related cytokine-is upregulated in breast cancer patients, yet its impact on breast cancer behavior remains to be ascertained. Similarly, Toll-like receptor 4 (TLR4) has been implicated in breast cancer progression, however, its clinically relevant endogenous ligand remains elusive. In this study, we observed that high serum resistin levels in breast cancer patients positively correlated with tumor stage, size and lymph node metastasis. These findings were replicated in animal models of breast cancer tumorigenesis and metastasis...
October 9, 2017: Oncogene
https://www.readbyqxmd.com/read/28987334/cost-effectiveness-and-return-on-investment-of-a-scalable-community-weight-loss-intervention
#18
Tzeyu L Michaud, Wen You, Kathryn E Wilson, Dejun Su, Todd J McGuire, Fabio A Almeida, Amy L Bayer, Paul A Estabrooks
This study assessed the lifetime health and economic consequences of an efficacious scalable community weight loss program for overweight and obese adults. We applied a state-transition Markov model to project lifetime economic outcome (US dollar) and the degree of disease averted as a result of a weight loss intervention, compared with no intervention, from a payer perspective. Effect sizes of the intervention on weight loss, by sex, race and ethnicity, and body mass index (BMI) of participants, were derived from a 12-month community program...
October 5, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/28985927/association-between-targeted-her-2-therapy-and-breast-reconstruction-outcomes-a%C3%A2-propensity-score-matched-analysis
#19
Ronnie L Shammas, Eugenia H Cho, Adam D Glener, Luke P Poveromo, Lily R Mundy, Rachel A Greenup, Kimberly L Blackwell, Scott T Hollenbeck
BACKGROUND: Current treatment for HER-2+ breast cancer includes chemotherapy and targeted HER-2 therapy with trastuzumab and/or pertuzumab. Evidence is lacking on the safety of breast reconstructive operations in these patients. We hypothesized that targeted HER-2 therapy was not associated with post-mastectomy reconstructive outcomes. STUDY DESIGN: Women receiving chemotherapy and post-mastectomy reconstruction at Duke University Medical Center from 2006 to 2016 were retrospectively identified...
September 26, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28981482/vital-signs-trends-in-incidence-of-cancers-associated-with-overweight-and-obesity-united-states-2005-2014
#20
C Brooke Steele, Cheryll C Thomas, S Jane Henley, Greta M Massetti, Deborah A Galuska, Tanya Agurs-Collins, Mary Puckett, Lisa C Richardson
BACKGROUND: Overweight and obesity are associated with increased risk of at least 13 different types of cancer. METHODS: Data from the United States Cancer Statistics for 2014 were used to assess incidence rates, and data from 2005 to 2014 were used to assess trends for cancers associated with overweight and obesity (adenocarcinoma of the esophagus; cancers of the breast [in postmenopausal women], colon and rectum, endometrium, gallbladder, gastric cardia, kidney, liver, ovary, pancreas, and thyroid; meningioma; and multiple myeloma) by sex, age, race/ethnicity, state, geographic region, and cancer site...
October 3, 2017: MMWR. Morbidity and Mortality Weekly Report
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