Download or read book Interactions Among Epithelial Cells and Macrophages to Promote Obesity associated Breast Cancer written by Tamara Chamberlin-Safrit and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Obesity is associated with an increased risk for breast cancer in postmenopausal women and for triple negative and inflammatory breast cancer subtypes in premenopausal women. Obesity is also linked to a poor clinical prognosis. The rise of obesity worldwide signifies the need to better understand these links of obesity to breast cancer. To study how obesity impacts breast cancer risk, we examined mammary glands from mice fed a high fat diet (HFD) and reduction mammoplasty tissue from women with known BMI to identify how obesity alters normal mammary tissue. Within the mammary epithelium, we observed increased stem/progenitor activity with enhanced numbers of cells expressing estrogen receptor alpha (ER[small alpha]), as well as, loss of basal/myoepithelial cell populations. We also observed increased macrophage infiltration surrounding mammary ducts. Using macrophage depletion strategies, we identified macrophage-secreted decorin as a regulator of TGF[capital beta] activity specific to obesity. Many of these changes in obese mammary tissue appeared to be reversible with weight loss. To study carcinogenesis in obesity, we utilized a well-characterized trp53-/- transplant model of mouse mammary tumorigenesis. Mice fed the HFD had increased tumor incidence compared to controls. Eight weeks after transplant, preneoplastic hyperplastic mammary ducts were significantly increased in obese mice with luminal epithelial cell expansion, loss of basal cells, and enhanced stem/progenitor activity. Similar to non-tumor bearing mice, we observed an increased recruitment of macrophages to the preneoplastic lesions in obese mammary tissue compared to controls. To understand how macrophage-driven inflammation due to obesity promoted tumor formation, mice were treated with IgG or anti-F4/80 antibodies to deplete macrophages following the transplant of p53-/- mammary epithelial cells. Obese mice treated with anti-F4/80 antibodies demonstrated enhanced mammary epithelial stem/progenitor activity, elevated expression of ER[small alpha], and increased numbers of cells expressing [capital gamma]H2AX, a marker for DNA damage. Depletion of macrophages in the HFD-fed mice lead to tumor formation at 8 weeks post-transplant. Cumulatively, these results suggest macrophages decrease the presence of DNA damaged cells in obesity, which may decrease tumor formation or prolong tumor latency. Together our studies show altered breast cancer risk through influences on mammary microenvironment and stem and progenitor cells under obesity.
Download or read book Weight Control and Physical Activity written by Harri Vainio and published by IARC. This book was released on 2002 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Avoiding overweight and obesity is the best-established diet-related risk factor for cancer. The proportion of people who are overweight/obese is increasing, and the amount of physical activity is decreasing in most populations, including urban populations in many developing countries. The increasing prevalence of overweight/obesity is presumably due to the increasing availability of highly palatable, high-energy foods, and an increasing sedentary lifestyle due to mechanisation of both workplace and leisure activities. Overweight/obesity and reduced physical activity increases the risk of cancers in various organs. Maintaining a healthy body weight and regular physical activity is the second most important way to prevent cancer, after tobacco control. The suggestions of possible public health actions to tackle these risk factors include the promotion of balanced diets, which are not excessive in energy, and broad education and planning to enable and encourage physical activity during work and leisure. Recommendations and a full discussion of these topics are included in the sixth volume in this series of Handbooks.
Download or read book Epithelial Mesenchymal Plasticity in Cancer Metastasis written by Mohit Kumar Jolly and published by MDPI. This book was released on 2020-12-29 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies have highlighted that epithelial-mesenchymal transition (EMT) is not only about cell migration and invasion, but it can also govern many other important elements such as immunosuppression, metabolic reprogramming, senescence-associated secretory phenotype (SASP), stem cell properties, therapy resistance, and tumor microenvironment interactions. With the on-going debate about the requirement of EMT for cancer metastasis, an emerging focus on intermediate states of EMT and its reverse process mesenchymal-epithelial transition (MET) offer new ideas for metastatic requirements and the dynamics of EMT/MET during the entire metastatic cascade. Therefore, we would like to initiate discussions on viewing EMT and its downstream signaling networks as a fulcrum of cellular plasticity, and a facilitator of the adaptive responses of cancer cells to distant organ microenvironments and various therapeutic assaults. We hereby invite scientists who have prominently contributed to this field, and whose valuable insights have led to the appreciation of epithelial-mesenchymal plasticity as a more comprehensive mediator of the adaptive response of cancer cells, with huge implications in metastasis, drug resistance, tumor relapse, and patient survival.
Download or read book Breast Cancer written by Mehmet Gunduz and published by BoD – Books on Demand. This book was released on 2011-11-30 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cancer is the leading cause of death in most countries and its consequences result in huge economic, social and psychological burden. Breast cancer is the most frequently diagnosed cancer type and the leading cause of cancer death among females. In this book, we discussed various aspects of breast cancer carcinogenesis from clinics to its hormone-based as well as genetic-based etiologies for this deadly cancer. We hope that this book will contribute to the development of novel diagnostic as well as therapeutic approaches.
Download or read book Metabolic Abnormalities and Breast Cancer Challenges From Bench to Bedside written by Xiaosong Chen and published by Frontiers Media SA. This book was released on 2022-08-01 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inflammation and Cancer written by Bharat B. Aggarwal and published by Springer. This book was released on 2014-05-12 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume examines in detail the role of chronic inflammatory processes in the development of several types of cancer. Leading experts describe the latest results of molecular and cellular research on infection, cancer-related inflammation and tumorigenesis. Further, the clinical significance of these findings in preventing cancer progression and approaches to treating the diseases are discussed. Individual chapters cover cancer of the lung, colon, breast, brain, head and neck, pancreas, prostate, bladder, kidney, liver, cervix and skin as well as gastric cancer, sarcoma, lymphoma, leukemia and multiple myeloma.
Download or read book Obesity and Lipotoxicity written by Ayse Basak Engin and published by Springer. This book was released on 2017-06-05 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the resultant health consequences and considerable increase in prevalence, obesity has become a major worldwide health problem. “Obesity and Lipotoxicity” is a comprehensive review of the recent researches to provide a better understanding of the lipotoxicity-related mechanisms of obesity and the potential for the development of new treatment strategies. This book overviews the biochemical pathways leading to obesity-related metabolic disorders that occur subsequent to lipotoxicity. Chapters examine the deleterious effects of nutrient excess at molecular level including the cellular and molecular aspects of breast cancer, resistance to leptin, insulin, adiponectin, and interconnection between the circadian clock and metabolic pathways during high-fat feeding. “Lipotoxicity and Obesity” will be a useful resource for clinicians and basic science researchers, such as biochemists, toxicologists, immunologists, nutritionists, adult and pediatric endocrinologists, cardiologists, as well as students who are thought in this field.
Download or read book Nutrition and Cancer written by Vera C. Mazurak and published by MDPI. This book was released on 2018-06-22 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Nutrition and Cancer" that was published in Nutrients
Download or read book Biomarkers of the Tumor Microenvironment written by Lars A. Akslen and published by Springer Nature. This book was released on 2022-07-12 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews different aspects of the cancer microenvironment, and its regulation and importance for tumor progression. Methodological advancements and practical applications, in terms of how biomarkers are studied and increasingly included in clinical trials and therapy protocols, are described and discussed. Biomarkers of the Tumor Microenvironment is an educational resource for students and members of the cancer research community as a whole, especially for those using morphology analysis techniques and models focusing on the cross-talk between different cell types in tumors. The textbook provides a comprehensive overview of the microenvironment in various contexts from the perspectives of experienced and accomplished cancer researchers and clinicians.
Download or read book Breast Cancer written by Umberto Veronesi and published by Springer. This book was released on 2017-11-03 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the reader with up-to-date information on important advances in the understanding of breast cancer and innovative approaches to its management. Current and emerging perspectives on genetics, biology, and prevention are first discussed in depth, and individual sections are then devoted to pathology, imaging, oncological surgery, plastic and reconstructive surgery, medical oncology, and radiotherapy. In each case the focus is on the most recent progress and/or state of the art therapies and techniques. Further topics to receive detailed consideration include particular conditions requiring multidisciplinary approaches, the investigation of new drugs and immunological agents, lifestyle and psychological aspects, and biostatistics and informatics. The book will be an excellent reference for practitioners, interns and residents in medical oncology, oncologic surgery, radiotherapy, pathology, and human genetics, researchers, and advanced medical students.
Download or read book The regulation of angiogenesis by tissue cell macrophage interactions written by Michal Amit Rahat and published by Frontiers E-books. This book was released on 2014-11-03 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Angiogenesis is the physiological process where new blood vessels grow from existing ones, in order to replenish tissues suffering from inadequate blood supply. Perhaps the most studied angiogenic process occurs in solid tumors whose growing mass and expanding cells create a constant demand for additional supply of oxygen and nutrients for survival. However, other physiological and clinical conditions, such as wound healing, ischemic events, autoimmune and age-related diseases also involve angiogenesis. Angiogenesis is a well-structured process that begins when oxygen and nutrients are depleted, leading to the release of chemokines and growth factors that attract immune cells, particularly macrophages and endothelial cells to the site. Macrophages that are recruited to the site, as well as tissue cells and endothelial cells, secrete pro-angiogenic mediators that affect endothelial cells and promote angiogenesis. These mediators include growth factors such as vascular endothelial cell growth factor (VEGF), matrix metalloproteinases (MMPs), as well as low levels of mediators that are usually seen as pro-inflammatory but are pro-angiogenic when secreted in low levels (e.g. nitric oxide (NO) and TNFa). Thus, macrophages play a major role in angiogenesis. Macrophages exhibit high plasticity and are capable of shifting between different activation modes and functions according to their changing microenvironment. Small differences in the composition of activating factors (e.g. TLR ligands such as LPS, anti-inflammatory cytokines, ECM molecules) in the microenvironment may differently activate macrophages to yield classically activated macrophages (or M1 macrophages) that can kill pathogen and tumor cells, alternatively activated macrophages (or M2 macrophages) that secrete antiinflammatory cytokines, resolution macrophages (rM?) that are involved in the resolution of inflammation, or regulatory macrophages (e.g. Myeloid-Derived Suppressor Cells - MDSCs) that control the function of other immune cells. In fact, macrophages may be activated in a spectrum of subsets that may differently contribute to angiogenesis, and in particular non-classically activated macrophages such as tumor-associated macrophages (TAMs) and Tie2-expressing monocytes (TEMs) can secrete high amounts of pro-angiogenic factors (e.g. VEGF, MMPs) or low levels of pro-inflammatory mediators (e.g. NO or TNFa) resulting in pro-angiogenic effects. Although the importance of macrophages as major contributors and regulators of the angiogenic process is well documented, less is known about the interactions between macrophages and other cell types (e.g. tumor cells, normal epithelial cells, endothelial cells) that regulate angiogenesis. We still have only limited understanding which proteins or complexes mediate these interactions and whether they require cell-cell contact (e.g. through integrins) or soluble factors (e.g. the EGF-CSF-1 loop), which signaling pathways are triggered in each of the two corresponding cell types, and how this leads to secretion of pro- or antiangiogenic factors in the microenvironment. The regulation of such interactions and through them of angiogenesis, whether through post-translational modifications of proteins or via the involvement of microRNA, is still unclear. The goal of this Research Topic is to highlight these interactions and their regulation in the context of both physiological and pathological conditions.
Download or read book Environmental Health Perspectives written by and published by . This book was released on 2009-12 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tumor Microenvironment Molecular Mechanisms and Signaling Pathways Involved in Metastatic Progression written by Antonella Zannetti and published by Frontiers Media SA. This book was released on 2021-09-30 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Approaches to Understanding Breast Cancer written by and published by Academic Press. This book was released on 2017-10-19 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approaches to Understanding Breast Cancer, Volume 151, the latest volume in the Progress in Molecular Biology and Translational Science series focuses on breast cancer, with new chapters that include information on Breast Cancer Epidemiology, Prevention, and Screening, DCIS: Current Principles of Management, Pregnancy and Hormonal Prevention of Breast Cancer, Chemokines: Key Players in Pathobiology of Breast Cancer, Mircrobiota and Breast Cancer, Experimental Therapeutic Use of Estrogen Receptor Beta Agonists in Prevention and Treatment of Endocrine Therapy Resistant Breast Cancers: Observations from Pre-Clinical Models, Targeting Breast Cancer Stem Cells: Key for Anti-Metastatic Therapy, and Experimental Therapy of Advanced Breast Cancer: Target NFAT1-MDM2-p53 Pathway. Accessible to students and researchers alike Written by leading authorities in the field
Download or read book Perspectives in Primary Prevention Research for Breast Cancer A Focus on Gene Environment Interactions written by Sophie A. Lelièvre and published by Frontiers Media SA. This book was released on 2021-04-16 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Public Health Effects of Food Deserts written by National Research Council and published by National Academies Press. This book was released on 2009-07-02 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the United States, people living in low-income neighborhoods frequently do not have access to affordable healthy food venues, such as supermarkets. Instead, those living in "food deserts" must rely on convenience stores and small neighborhood stores that offer few, if any, healthy food choices, such as fruits and vegetables. The Institute of Medicine (IOM) and National Research Council (NRC) convened a two-day workshop on January 26-27, 2009, to provide input into a Congressionally-mandated food deserts study by the U.S. Department of Agriculture's Economic Research Service. The workshop, summarized in this volume, provided a forum in which to discuss the public health effects of food deserts.
Download or read book Breast Cancer in Australia written by and published by AIHW. This book was released on 2012 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes separate statistics based on Aboriginal and Torres Strait Islander status.
