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Cancer metabolism

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https://www.readbyqxmd.com/read/27933370/doxorubicin-induced-chronic-dilated-cardiomyopathy-the-apoptosis-hypothesis-revisited
#1
REVIEW
Cynthia Kankeu, Kylie Clarke, Egle Passante, Heinrich J Huber
The chemotherapeutic agent doxorubicin (DOX) has significantly increased survival rates of pediatric and adult cancer patients. However, 10% of pediatric cancer survivors will 10-20 years later develop severe dilated cardiomyopathy (DCM), whereby the exact molecular mechanisms of disease progression after this long latency time remain puzzling. We here revisit the hypothesis that elevated apoptosis signaling or its increased likelihood after DOX exposure can lead to an impairment of cardiac function and cause a cardiac dilation...
December 8, 2016: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/27933296/modeling-diet-induced-obesity-with-obesity-prone-rats-implications-for-studies-in-females
#2
REVIEW
Erin D Giles, Matthew R Jackman, Paul S MacLean
Obesity is a worldwide epidemic, and the comorbidities associated with obesity are numerous. Over the last two decades, we and others have employed an outbred rat model to study the development and persistence of obesity, as well as the metabolic complications that accompany excess weight. In this review, we summarize the strengths and limitations of this model and how it has been applied to further our understanding of human physiology in the context of weight loss and weight regain. We also discuss how the approach has been adapted over time for studies in females and female-specific physiological conditions, such as menopause and breast cancer...
2016: Frontiers in Nutrition
https://www.readbyqxmd.com/read/27932791/migration-and-invasion-of-drug-resistant-lung-adenocarcinoma-cells-are-dependent-on-mitochondrial-activity
#3
Ji Hoon Jeon, Dong Keon Kim, Youngmi Shin, Hee Yeon Kim, Bomin Song, Eun Young Lee, Jong Kwang Kim, Hye Jin You, Heesun Cheong, Dong Hoon Shin, Seong-Tae Kim, Jae-Ho Cheong, Soo Youl Kim, Hyonchol Jang
A small proportion of cancer cells have stem-cell-like properties, are resistant to standard therapy and are associated with a poor prognosis. The metabolism of such drug-resistant cells differs from that of nearby non-resistant cells. In this study, the metabolism of drug-resistant lung adenocarcinoma cells was investigated. The expression of genes associated with oxidative phosphorylation in the mitochondrial membrane was negatively correlated with the prognosis of lung adenocarcinoma. Because the mitochondrial membrane potential (MMP) reflects the functional status of mitochondria and metastasis is the principal cause of death due to cancer, the relationship between MMP and metastasis was evaluated...
December 9, 2016: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/27932592/the-role-of-adipose-tissue-in-cancer-associated-cachexia
#4
Janina A Vaitkus, Francesco S Celi
Adipose tissue (fat) is a heterogeneous organ, both in function and histology, distributed throughout the body. White adipose tissue, responsible for energy storage and more recently found to have endocrine and inflammation-modulatory activities, was historically thought to be the only type of fat present in adult humans. The recent demonstration of functional brown adipose tissue in adults, which is highly metabolic, shifted this paradigm. Additionally, recent studies demonstrate the ability of white adipose tissue to be induced toward the brown adipose phenotype - "beige" or "brite" adipose tissue - in a process referred to as "browning...
December 8, 2016: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27932423/integrated-genomic-analysis-of-survival-outliers-in-glioblastoma
#5
Sen Peng, Harshil Dhurv, Brock Armstrong, Bodour Salhia, Christophe Legendre, Jeffrey Kiefer, Julianna Parks, Selene Virk, Andrew E Sloan, Quinn T Ostrom, Jill S Barnholtz-Sloan, Nhan L Tran, Michael E Berens
BACKGROUND: To elucidate molecular features associated with disproportionate survival of glioblastoma (GB) patients, we conducted deep genomic comparative analysis of a cohort of patients receiving standard therapy (surgery plus concurrent radiation and temozolomide); "GB outliers" were identified: long-term survivor of 33 months (LTS; n = 8) versus short-term survivor of 7 months (STS; n = 10). METHODS: We implemented exome, RNA, whole genome sequencing, and DNA methylation for collection of deep genomic data from STS and LTS GB patients...
December 8, 2016: Neuro-oncology
https://www.readbyqxmd.com/read/27932340/is-walk-score-associated-with-hospital-admissions-from-chronic-diseases-evidence-from-a-cross-sectional-study-in-a-high-socioeconomic-status-australian-city-state
#6
Soumya Mazumdar, Vincent Learnihan, Thomas Cochrane, Hai Phung, Bridget O'Connor, Rachel Davey
OBJECTIVES: To explore patterns of non-communicable diseases (NCDs) in the Australian Capital Territory (ACT).To ascertain the effect of the neighbourhood built environmental features and especially walkability on health outcomes, specifically for hospital admissions from NCDs. DESIGN: A cross-sectional analysis of public hospital episode data (2007-2013). SETTING: Hospitalisations from the ACT, Australia at very small geographic areas. PARTICIPANTS: Secondary data on 75 290 unique hospital episodes representing 39 851 patients who were admitted to ACT hospitals from 2007 to 2013...
December 8, 2016: BMJ Open
https://www.readbyqxmd.com/read/27932295/the-interconnections-between-autophagy-and-integrin-mediated-cell-adhesion
#7
REVIEW
Ariadne Vlahakis, Jayanta Debnath
Autophagy is a cellular degradation process integral for promoting cellular adaptation during metabolic stress while also functioning as a cellular homeostatic mechanism. Mounting evidence also demonstrates that autophagy is induced upon loss of integrin-mediated cell attachments to the surrounding extracellular matrix (ECM). Analogous to its established cytoprotective role during nutrient starvation, autophagy protects cells from detachment-induced cell death, termed anoikis. Here, we review the significance of autophagy as an anoikis resistance pathway, focusing on the intracellular signals associated with integrins that modulate the autophagy response and dictate the balance between cell death and survival following loss of cell-matrix contact...
December 5, 2016: Journal of Molecular Biology
https://www.readbyqxmd.com/read/27932276/the-why-and-how-of-amino-acid-analytics-in-cancer-diagnostics-and-therapy
#8
REVIEW
Friederike Manig, Konstantin Kuhne, Cläre von Neubeck, Uwe Schwarzenbolz, Zhanru Yu, Benedikt M Kessler, Jens Pietzsch, Leoni A Kunz-Schughart
Pathological alterations in cell functions are frequently accompanied by metabolic reprogramming including modifications in amino acid metabolism. Amino acid detection is thus integral to the diagnosis of many hereditary metabolic diseases. The development of malignant diseases as metabolic disorders comes along with a complex dysregulation of genetic and epigenetic factors affecting metabolic enzymes. Cancer cells might transiently or permanently become auxotrophic for non-essential or semi-essential amino acids such as asparagine or arginine...
December 5, 2016: Journal of Biotechnology
https://www.readbyqxmd.com/read/27932253/regulation-of-cyclin-d1-by-arsenic-and-microrna-inhibits-adipogenesis
#9
Kevin Beezhold, Linda R Klei, Aaron Barchowsky
Low-dose chronic exposure to arsenic in drinking water represents a global public health concern with established risks for metabolic and cardiovascular disease, as well as cancer. While the linkage between arsenic and disease is strong, further understanding of the molecular mechanisms of its pathogenicity is required. Previous reports demonstrated the ability of arsenic to interfere with adipogenesis, which may mediate its effects in promoting metabolic disease. We hypothesized that microRNA are important regulators of most if not all mesenchymal stem cell processes that are dysregulated by arsenic exposure to impair lipogenesis...
December 5, 2016: Toxicology Letters
https://www.readbyqxmd.com/read/27931839/overview-of-the-predictive-value-of-quantitative-18-fdg-pet-in-head-and-neck-cancer-treated-with-chemoradiotherapy
#10
REVIEW
J Castelli, B De Bari, A Depeursinge, A Simon, A Devillers, G Roman Jimenez, J Prior, M Ozsahin, R de Crevoisier, J Bourhis
18 F-fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) allows to quantify the metabolic activity of a tumor (glycolysis) and has become a reference tool in oncology for the staging, restaging, radiotherapy planning and monitoring response in many cancers. Quantitative analyses have been introduced in order to overcome some of the limits of the visual methods, allowing an easier and more objective comparison of the inter- and intra-patients variations. The aims of this review were to report available evidences on the clinical value of quantitative PET/CT parameters in HNC...
December 2016: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/27931833/hyperglycemia-tumorigenesis-and-chronic-inflammation
#11
REVIEW
Shu-Chun Chang, Wei-Chung Vivian Yang
Hyperglycemia is the most prominent sign that characterizes diabetes. Hyperglycemia favors malignant cell growth by providing energy to cancer cells. Clinical studies also showed an increased risk of diabetes being associated with different types of cancers. In addition, poorly regulated glucose metabolism in diabetic patients is often found with increased levels of chronic inflammatory markers, e.g., interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α, and emerging evidence has highlighted activation of the immune response in the progression and development of cancer cells...
December 2016: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/27931830/cancer-treatment-induced-metabolic-syndrome-improving-outcome-with-lifestyle
#12
REVIEW
N L Westerink, J Nuver, J D Lefrandt, A H Vrieling, J A Gietema, A M E Walenkamp
Increasing numbers of long-term cancer survivors face important treatment related adverse effects. Cancer treatment induced metabolic syndrome (CTIMetS) is an especially prevalent and harmful condition. The aetiology of CTIMetS likely differs from metabolic syndrome in the general population, but effective treatment and prevention methods are probably similar. In this review, we summarize the potential mechanisms leading to the development of CTIMetS after various types of cancer treatment. Furthermore, we propose a safe and accessible method to treat or prevent CTIMetS through lifestyle change...
December 2016: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/27931128/antioxidant-activities-of-ginsenoside-rg1-against-cisplatin-induced-hepatic-injury-through-nrf2-signaling-pathway-in-mice
#13
Yan Gao, Shifeng Chu, Qianhang Shao, Meijin Zhang, Congyuan Xia, Yingying Wang, Yueting Li, Yuxia Lou, Huiyong Huang, Naihong Chen
Oxidative stress is mainly caused by reactive oxygen species (ROS). The damage causes a net stress on normal organs, leading to a gradual loss of vital physiological function. ROS, such as free radicals, represent a class of molecules which are derived from the metabolism of oxygen and exist inherently. However, excessive produced ROS can damage all aerobic organisms. Ginseng is one of the most commonly used alternative herbal medicines, also as a traditional Chinese medicine. The aim of this study is to investigate the antioxidant potential function of ginsenoside Rg1 against cisplatin-caused hepatic damage...
December 8, 2016: Free Radical Research
https://www.readbyqxmd.com/read/27931038/heterogeneity-of-glucose-metabolism-in-esophageal-cancer-measured-by-fractal-analysis-of-fluorodeoxyglucose-positron-emission-tomography-image-correlation-between-metabolic-heterogeneity-and-survival
#14
Toru Tochigi, Kiyohiko Shuto, Tsuguaki Kono, Gaku Ohira, Takayuki Tohma, Hisashi Gunji, Koichi Hayano, Kazuo Narushima, Takeshi Fujishiro, Toshiharu Hanaoka, Yasunori Akutsu, Shinichi Okazumi, Hisahiro Matsubara
BACKGROUND: Intratumoral heterogeneity is a well-recognized characteristic feature of cancer. The purpose of this study is to assess the heterogeneity of the intratumoral glucose metabolism using fractal analysis, and evaluate its prognostic value in patients with esophageal squamous cell carcinoma (ESCC). METHODS: 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) studies of 79 patients who received curative surgery were evaluated. FDG-PET images were analyzed using fractal analysis software, where differential box-counting method was employed to calculate the fractal dimension (FD) of the tumor lesion...
December 9, 2016: Digestive Surgery
https://www.readbyqxmd.com/read/27930973/phytosomal-curcumin-a-review-of-pharmacokinetic-experimental-and-clinical-studies
#15
REVIEW
Hamed Mirzaei, Abolfazl Shakeri, Bahman Rashidi, Amin Jalili, Zarrin Banikazemi, Amirhossein Sahebkar
Curcumin, a hydrophobic polyphenol, is the principal constituent extracted from dried rhizomes of Curcuma longa L. (turmeric). Curcumin is known as a strong anti-oxidant and anti-inflammatory agent that has different pharmacological effects. In addition, several studies have demonstrated that curcumin is safe even at dosages as high as 8g per day; however, instability at physiological pH, low solubility in water and rapid metabolism results in a low oral bioavailability of curcumin. The phytosomal formulation of curcumin (a complex of curcumin with phosphatidylcholine) has been shown to improve curcumin bioavailability...
December 5, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27930694/influence-of-fasting-status-and-sample-preparation-on-metabolic-biomarker-measurements-in-postmenopausal-women
#16
Neil Murphy, Roni T Falk, Diana B Messinger, Michael Pollak, Xiaonan Xue, Juan Lin, Robin Sgueglia, Howard D Strickler, Mia M Gaudet, Marc J Gunter
BACKGROUND: Epidemiologic data linking metabolic markers-such as insulin, insulin-like growth factors (IGFs)-and adipose tissue-derived factors with cancer are inconsistent. Between-study differences in blood collection protocols, in particular participant's fasting status, may influence measurements. METHODS: We investigated the impact of fasting status and blood sample processing time on components of the insulin/IGF axis and in adipokines in a controlled feeding study of 45 healthy postmenopausal-women aged 50-75 years...
2016: PloS One
https://www.readbyqxmd.com/read/27930524/dietary-protein-and-fat-intake-in-relation-to-risk-of-colorectal-adenoma-in-korean
#17
Sun Young Yang, Young Sun Kim, Jung Eun Lee, Jueun Seol, Ji Hyun Song, Goh Eun Chung, Jeong Yoon Yim, Sun Hee Lim, Joo Sung Kim
Consumption of red meat and alcohol are known risk factors for colorectal cancer, but associations for dietary fat remain unclear. We investigated the associations of dietary fat, protein, and energy intake with prevalence of colorectal adenoma.We performed a prospective cross-sectional study on asymptomatic persons who underwent a screening colonoscopy at a single center during a routine health check-up from May to December 2011. Dietary data were obtained via a validated Food Frequency Questionnaire (FFQ), assisted by a registered dietician...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27930411/comprehensive-dna-methylation-profiling-of-inflammatory-mucosa-in-ulcerative-colitis
#18
Tomomitsu Tahara, Ichiro Hirata, Naoko Nakano, Mitsuo Nagasaka, Yoshihito Nakagawa, Tomoyuki Shibata, Naoki Ohmiya
INTRODUCTION: Aberrant DNA methylation frequently occurs in the inflammatory mucosa in ulcerative colitis (UC) and is involved in UC-related tumorigenesis. We performed comprehensive DNA methylation profiling of the promoter regions of the inflamed rectal mucosae of patients with UC. DESIGN: The methylation status of the promoter CpG islands (CGIs) of 45 cancer/inflammation or age-related candidate genes and the LINE1 repetitive element were examined in the colonic mucosae of 84 cancer-free patients with UC by bisulfite pyrosequencing...
December 7, 2016: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/27930300/an-nad-dependent-transcriptional-program-governs-self-renewal-and-radiation-resistance-in-glioblastoma
#19
Amit D Gujar, Son Le, Diane D Mao, David Y A Dadey, Alice Turski, Yo Sasaki, Diane Aum, Jingqin Luo, Sonika Dahiya, Liya Yuan, Keith M Rich, Jeffrey Milbrandt, Dennis E Hallahan, Hiroko Yano, David D Tran, Albert H Kim
Accumulating evidence suggests cancer cells exhibit a dependency on metabolic pathways regulated by nicotinamide adenine dinucleotide (NAD(+)). Nevertheless, how the regulation of this metabolic cofactor interfaces with signal transduction networks remains poorly understood in glioblastoma. Here, we report nicotinamide phosphoribosyltransferase (NAMPT), the rate-limiting step in NAD(+) synthesis, is highly expressed in glioblastoma tumors and patient-derived glioblastoma stem-like cells (GSCs). High NAMPT expression in tumors correlates with decreased patient survival...
December 7, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27929731/autophagic-homeostasis-is-required-for-the-pluripotency-of-cancer-stem-cells
#20
Tanveer Sharif, Emma Martell, Cathleen Dai, Barry E Kennedy, Patrick Murphy, Derek Clements, Youra Kim, Patrick W K Lee, Shashi Gujar
Pluripotency is an important feature of cancer stem cells (CSCs) that contributes to self-renewal and chemoresistance. The maintenance of pluripotency of CSCs under various pathophysiological conditions requires a complex interaction between various cellular pathways including those involved in homeostasis and energy metabolism. However, the exact mechanisms that maintain the CSC pluripotency remain poorly understood. In this report, using both human and murine models of CSCs, we demonstrate that basal levels of autophagy are required to maintain the pluripotency of CSCs, and that this process is differentially regulated by the rate limiting enzyme in the NAD(+) synthesis pathway NAMPT (nicotinamide phosphoribosyltransferase) and the transcription factor POU5F1/OCT4 (POU class 5 homeobox 1)...
December 8, 2016: Autophagy
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