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https://www.readbyqxmd.com/read/28646699/insulin-and-the-polycystic-ovary-syndrome
#1
REVIEW
Djuro Macut, Jelica Bjekić-Macut, Dario Rahelić, Mirjana Doknić
Polycystic ovary syndrome (PCOS) is the most prevalent endocrinopathy among women during reproductive age. PCOS is characterised by hyperandrogenaemia, hyperinsulinaemia, and deranged adipokines secretion from the adipose tissue. In addition to the reduced insulin sensitivity, PCOS women exhibit β-cell dysfunction as well. Low birth weight and foetal exposure to androgens may contribute to the development of the PCOS phenotype during life. Further metabolic complications lead to dyslipidaemia, worsening obesity and glucose tolerance, high prevalence of metabolic syndrome, and greater susceptibility to diabetes...
June 12, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28640441/adipose-tissue-derived-omentin-1-function-and-regulation
#2
Takuya Watanabe, Kaho Watanabe-Kominato, Yui Takahashi, Miho Kojima, Rena Watanabe
Omentin-1, also known as intelectin-1, is a recently identified novel adipocytokine of 313 amino acids, which is expressed in visceral (omental and epicardial) fat as well as mesothelial cells, vascular cells, airway goblet cells, small intestine, colon, ovary, and plasma. The level of omentin-1 expression in (pre)adipocytes is decreased by glucose/insulin and stimulated by fibroblast growth factor-21 and dexamethasone. Several lines of experimental evidence have shown that omentin-1 plays crucial roles in the maintenance of body metabolism and insulin sensitivity, and has anti-inflammatory, anti-atherosclerotic, and cardiovascular protective effects via AMP-activated protein kinase/Akt/nuclear factor-κB/mitogen-activated protein kinase (ERK, JNK, and p38) signaling...
June 18, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28619690/metformin-the-aspirin-of-the-21-st-century-its-role-in-gestational-diabetes-prevention-of-preeclampsia-and-cancer-and-the-promotion-of-longevity
#3
REVIEW
Roberto Romero, Offer Erez, Maik Hüttemann, Eli Maymon, Bogdan Panaitescu, Agustin Conde-Agudelo, Percy Pacora, Bo Hyun Yoon, Lawrence I Grossman
Metformin is everywhere. Originally introduced in clinical practice as an anti-diabetic agent, its role as a therapeutic agent is expanding to include treatment of pre-diabetes, gestational diabetes, polycystic ovarian disease, and more recently, experimental studies, as well as observations in randomized clinical trials, suggest that metformin could have a place in the treatment or prevention of preeclampsia. This article provides a brief overview of the history of metformin in the treatment of diabetes, reviews the results of meta-analyses of metformin in gestational diabetes, and the treatment of obese non-diabetic pregnant women to prevent macrosomia...
June 12, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28456789/metformin-and-lung-cancer-risk-in-patients-with-type-2-diabetes-mellitus
#4
Chin-Hsiao Tseng
This study evaluated whether metformin might reduce lung cancer risk. The reimbursement database of the Taiwan's National Health Insurance was used. A sample of 15414 never users and 280159 ever users of metformin (original sample) and a 1:1 matched-pairs of ever and never users (n=15414 in each group, matched sample) were recruited from patients with newly diagnosed type 2 diabetes mellitus during 1999-2005. They were followed until December 31, 2011. Cox regression incorporated with the inverse probability of treatment weighting using propensity score was used to estimate hazard ratios...
June 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28449193/impact-of-metformin-on-patients-with-advanced-head-and-neck-cancer-undergoing-concurrent-chemoradiotherapy
#5
Pei-Hung Chang, Kun-Yun Yeh, Cheng-Hsu Wang, Eric Yen-Chao Chen, Shih-Wei Yang, Wen-Chi Chou, Jason Chia-Hsun Hsieh
BACKGROUND: The purpose of this study was to evaluate the impact of metformin on toxicities and survival in patients with head and neck cancer undergoing concurrent chemoradiotherapy (CRT). METHODS: We retrospectively analyzed and compared the clinical characteristics, treatment tolerance, toxicities, and survival of 252 patients with stages III, IVA, and IVB head and neck cancer undergoing concurrent CRT with and without metformin treatment between 2007 and 2010...
April 27, 2017: Head & Neck
https://www.readbyqxmd.com/read/28438547/metformin-is-associated-with-a-lower-risk-of-colorectal-cancer-in-taiwanese-patients-with-type-2-diabetes-a-retrospective-cohort-analysis
#6
C-H Tseng
BACKGROUND: The association between metformin and colorectal cancer (CRC) has rarely been investigated in Asian populations. METHODS: This retrospective cohort study included patients with newly diagnosed type 2 diabetes during 1999-2005, recruited from Taiwan's National Health Insurance database. A total of 169,601 patients (original cohort: 153,270 ever-users and 16,331 never-users of metformin) and a subgroup of 1:1 propensity-score-matched pairs of 16,331 ever-users and 16,331 never-users (matched cohort) were followed up to 31 December 2011...
April 21, 2017: Diabetes & Metabolism
https://www.readbyqxmd.com/read/28392858/effect-of-metformin-on-different-non-diabetes-related-conditions-a-special-focus-on-malignant-conditions-review-of-literature
#7
REVIEW
Elamin Abdelgadir, Razan Ali, Fauzia Rashid, Alaaeldin Bashier
Metformin has been proven to be one of the most safe and effective antihyperglycemic agents. Through more than six decades of metformin use, it became the most studied hypoglycemic agent; through these studies, it showed a marvelous non-glycemic related effect. These effects include modulation of different points of cancer timeline, weight reduction, cardiovascular health, thyroid diseases, polycystic ovaries disease and many other medical conditions. The aim of this review was to assess the effect of metformin on non-diabetes related medical diseases...
May 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28385910/metformin-reduces-prostate-tumor-growth-in-a-diet-dependent-manner-by-modulating-multiple-signaling-pathways
#8
Andre Sarmento-Cabral, Fernando L-Lopez, Manuel D Gahete, Justo P Castano, Raul M Luque
Prostate-cancer is strongly influenced by obesity, wherein metformin could represent a promising treatment; however, the endocrine-metabolic/cellular/molecular-mechanisms underlying these associations and effects are still unclear. To determine the beneficial anti-tumoral effects of metformin on prostate-cancer progression/aggressiveness and the relative contribution of high-fat diet (HFD; independently of obesity), we used HFD-fed immuno-suppressed mice inoculated with PC3 cells (which exhibited partial resistance to diet-induced obesity) compared with low-fat diet (LFD)-fed control-mice...
April 6, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28370798/differential-use-of-screening-mammography-in-older-women-initiating-metformin-versus-sulfonylurea
#9
Jin-Liern Hong, Louise M Henderson, Michele Jonsson Funk, Jennifer L Lund, John B Buse, Virginia Pate, Til Stürmer
PURPOSE: Differential use of screening mammography may lead to biased detection of breast cancer. This study aimed to compare receipt of screening mammography and the incidence of screen-detected breast cancer between metformin and sulfonylurea initiators. METHODS: We used 2006-2014 US Medicare claims to identify initiators of metformin or sulfonylurea aged 65+ years continuously enrolled in Parts A/B for ≥2 years pre-initiation and ≥2 years post-initiation...
June 2017: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/28182659/metformin-exhibits-preventive-and-therapeutic-efficacy-against-experimental-cystic-echinococcosis
#10
Julia A Loos, Valeria A Dávila, Christian R Rodrígues, Romina Petrigh, Jorge A Zoppi, Fernando A Crocenzi, Andrea C Cumino
Metformin (Met) is an anti-hyperglycemic and potential anti-cancer agent which may exert its anti-proliferative effects via the induction of energetic stress. In this study we investigated the in vitro and in vivo efficacy of Met against the larval stage of Echinococcus granulosus. Metformin showed significant dose- and time-dependent killing effects on in vitro cultured protoscoleces and metacestodes. Notably, the combination of Met together with the minimum effective concentration of ABZSO had a synergistic effect after days 3 and 12 on metacestodes and protoscoleces, respectively...
February 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28166101/comparative-effect-of-initiating-metformin-versus-sulfonylureas-on-breast-cancer-risk-in-older-women
#11
Jin-Liern Hong, Michele Jonsson Funk, John B Buse, Louise M Henderson, Jennifer L Lund, Virginia Pate, Til Stürmer
BACKGROUND: Several observational studies have reported that metformin may be associated with reduced risk of breast cancer; however, many of these studies were affected by time-related biases such as immortal time bias and time-window bias. This study aimed to examine the relative risk of breast cancer for older women initiating metformin versus sulfonylureas while avoiding such biases. METHODS: The study cohort consisted of women aged 65+ who initiated monotherapy with metformin (n = 45,900) or sulfonylureas (n = 13,904) and were free of cancer and renal disease within 6 months before treatment initiation using 2007-2012 US Medicare claims data...
May 2017: Epidemiology
https://www.readbyqxmd.com/read/28151974/assessment-of-a-prognostic-model-psa-metrics-and-toxicities-in-metastatic-castrate-resistant-prostate-cancer-using-data-from-project-data-sphere-pds
#12
Bethany Pitcher, Leila Khoja, Robert J Hamilton, Kald Abdallah, Melania Pintilie, Anthony M Joshua
BACKGROUND: Prognostic models in metastatic castrate resistant prostate cancer (mCRPC) may have clinical utility. Using data from PDS, we aimed to 1) validate a contemporary prognostic model (Templeton et al., 2014) 2) evaluate prognostic impact of concomitant medications and PSA decrease 3) evaluate factors associated with docetaxel toxicity. METHODS: We accessed data on 2,449 mCRPC patients in PDS. The existing model was validated with a continuous risk score, time-dependent receiver operating characteristic (ROC) curves, and corresponding time-dependent Area under the Curve (tAUC)...
2017: PloS One
https://www.readbyqxmd.com/read/28114390/high-glucose-mediated-stat3-activation-in-endometrial-cancer-is-inhibited-by-metformin-therapeutic-implications-for-endometrial-cancer
#13
John J Wallbillich, Srirama Josyula, Uksha Saini, Roman A Zingarelli, Kalpana Deepa Priya Dorayappan, Maria K Riley, Ross A Wanner, David E Cohn, Karuppaiyah Selvendiran
OBJECTIVES: STAT3 is over-expressed in endometrial cancer, and diabetes is a risk factor for the development of type 1 endometrial cancer. We therefore investigated whether glucose concentrations influence STAT3 expression in type 1 endometrial cancer, and whether such STAT3 expression might be inhibited by metformin. METHODS: In Ishikawa (grade 1) endometrial cancer cells subjected to media with low, normal, or high concentrations of glucose, expression of STAT3 and its target proteins was evaluated by real-time quantitative PCR (qPCR)...
2017: PloS One
https://www.readbyqxmd.com/read/28019064/novel-antidiabetic-medications-for-non-alcoholic-fatty-liver-disease-with-type-2-diabetes-mellitus
#14
REVIEW
Yoshio Sumida, Yuya Seko, Masashi Yoneda
Liver-related diseases are the leading causes of death in patients with type 2 diabetes mellitus (T2DM) in Japan. Type 2 diabetes mellitus is closely associated with non-alcoholic fatty liver disease (NAFLD), which is the most prevalent chronic liver disease worldwide. Non-alcoholic steatohepatitis (NASH), a severe form of NAFLD, can lead to hepatocellular carcinoma and hepatic failure. Non-alcoholic steatohepatitis can be called "diabetic hepatopathy". There are no established pharmacotherapies for NAFLD/NASH patients with T2DM...
December 26, 2016: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/27931017/lean-body-weight-and-metformin-are-insufficient-to-prevent-endometrial-hyperplasia-in-mice-harboring-inactivating-mutations-in-pten
#15
David A Iglesias, Qian Zhang, Joseph Celestino, Charlotte C Sun, Melinda S Yates, Rosemarie E Schmandt, Karen H Lu
OBJECTIVES: Obesity is a major risk factor for endometrial cancer. We evaluated whether obesity exacerbates progression of endometrial hyperplasia (EH) using the PRCre/+ PTENflox/+ mouse model and examined if the type 2 diabetes drug, metformin, could prevent EH. METHODS: Twenty obese (PRCre/+ PTENflox/+) mice were maintained on a high-fat diet, while 20 lean mice ate a matching low-fat diet. Ten mice from each group received metformin (1,000 mg/day) in drinking water...
2017: Oncology
https://www.readbyqxmd.com/read/27903149/obesity-and-breast-cancer-prognosis-evidence-challenges-and-opportunities
#16
Sao Jiralerspong, Pamela J Goodwin
Purpose To summarize the evidence of an association between obesity and breast cancer prognosis. Methods We reviewed the literature regarding overweight and obesity and breast cancer survival outcomes, overall and with regard to breast cancer subtypes, breast cancer therapies, biologic mechanisms, and possible interventions. We summarize our findings and provide clinical management recommendations. Results Obesity is associated with a 35% to 40% increased risk of breast cancer recurrence and death and therefore poorer survival outcomes...
December 10, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/27861146/metformin-and-esophageal-cancer-risk-in-taiwanese-patients-with-type-2-diabetes-mellitus
#17
Chin-Hsiao Tseng
This study evaluated whether metformin might reduce esophageal cancer risk. Patients with type 2 diabetes mellitus diagnosed during 1999-2005 were recruited from the reimbursement database of Taiwan's National Health Insurance. Those newly treated with metformin (n = 288013, "ever users of metformin") or other antidiabetic drugs (n = 16216, "never users of metformin") were followed until December 31, 2011. Sensitivity analyses were conducted in a matched-pair sample of 16216 never users and 16216 ever users...
March 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/27748816/antidiabetic-activities-of-a-cucurbitane%C3%A2-type-triterpenoid-compound-from-momordica%C3%A2-charantia-in-alloxan%C3%A2-induced-diabetic-mice
#18
Bowen Jiang, Mingli Ji, Wei Liu, Lili Chen, Zhiyu Cai, Yuqing Zhao, Xiuli Bi
Momordica charantia has been used to treat a variety of diseases, including inflammation, diabetes and cancer. A cucurbitane‑type triterpenoid [(19R,23E)‑5β, 19‑epoxy‑19‑methoxy‑cucurbita‑6,23,25‑trien‑3 β‑o‑l] previously isolated from M. charantia was demonstrated to possess significant cytotoxicity against cancer cells. The current study investigated the effects of this compound (referred to as compound K16) on diabetes using an alloxan‑induced diabetic mouse model. C57BL/6J mice were intraperitoneally injected with alloxan (10 mg/kg body weight), and those with blood glucose concentration higher than 10 mM were selected for further experiments...
November 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27725832/insulin-sensitizers-polycystic-ovary-syndrome-and-gynaecological-cancer-risk
#19
REVIEW
Rosa Lauretta, Giulia Lanzolla, Patrizia Vici, Luciano Mariani, Costanzo Moretti, Marialuisa Appetecchia
Preclinical, early phase clinical trials and epidemiological evidence support the potential role of insulin-sensitizers in cancer prevention and treatment. Insulin-sensitizers improve the metabolic and hormonal profile in PCOS patients and may also act as anticancer agents, especially in cancers associated with hyperinsulinemia and oestrogen dependent cancers. Several lines of evidence support the protection against cancer exerted by dietary inositol, in particular inositol hexaphosphate. Metformin, thiazolidinediones, and myoinositol postreceptor signaling may exhibit direct inhibitory effects on cancer cell growth...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27684440/an-open-label-pilot-study-of-metformin-as-a-concomitant-therapy-on-patients-with-prostate-cancer-undergoing-androgen-deprivation-treatment
#20
RANDOMIZED CONTROLLED TRIAL
Wenhui Zhu, Hua Xu, Jing Ma, Jianming Guo, Wei Xue, Baojun Gu, Lu Sheng, Xudong Yao, Fukang Sun, Jian Gong, Weiliang Qiu, Qiang Ding, Haowen Jiang
PURPOSE: The study aimed to evaluate the effects of metformin on insulin, C-peptide and body weight in Chinese men undergoing androgen deprivation therapy (ADT). METHODS: Between March 2013 and June 2014, 62 newly diagnosed patients of prostate cancer (PCa) due to receive ADT were recruited from 7 hospitals in Shanghai. Patients were randomized to respectively receive ADT (n = 31) and ADT + metformin (n = 31) for 6 months. Fasting and postprandial serum levels of insulin and C-peptide, blood glucose, prostate specific antigen, body mass index (BMI) and waist circumference (WC) were measured at the beginning and end of 6-month treatment...
2017: Urologia Internationalis
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