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https://www.readbyqxmd.com/read/28802803/metformin-reduces-all-cause-mortality-and-diseases-of-ageing-independent-of-its-effect-on-diabetes-control-a-systematic-review-and-meta-analysis
#1
REVIEW
Jared M Campbell, Susan M Bellman, Matthew D Stephenson, Karolina Lisy
This systematic review investigated whether the insulin sensitiser metformin has a geroprotective effect in humans. Pubmed and Embase were searched along with databases of unpublished studies. Eligible research investigated the effect of metformin on all-cause mortality or diseases of ageing relative to non-diabetic populations or diabetics receiving other therapies with adjustment for disease control achieved. Overall, 260 full-texts were reviewed and 53 met the inclusion criteria. Diabetics taking metformin had significantly lower all-cause mortality than non-diabetics (hazard ratio (HR)=0...
August 9, 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/28802253/the-combination-of-metformin-and-valproic-acid-induces-synergistic-apoptosis-in-the-presence-of-p53-and-androgen-signaling-in-prostate-cancer
#2
Linh N K Tran, Ganessan Kichenadasse, Lisa M Butler, Margaret M Centenera, Katherine L Morel, Rebecca J Ormsby, Michael Z Michael, Karen M Lower, Pamela J Sykes
We investigated the potential of combining the hypoglycemic drug metformin (MET) and the anti-epileptic drug valproic acid (VPA), which act via different biochemical pathways, to provide enhanced anti-tumor responses in prostate cancer. Prostate cancer cell lines (LNCaP and PC-3), normal prostate epithelial cells (PrEC), and patient-derived prostate tumor explants were treated with MET and/or VPA. Proliferation and apoptosis were assessed. The role of p53 in response to MET+VPA was assessed in cell lines using RNA interference in LNCaP (p53(+)) and ectopic expression of p53 in PC-3 (p53(-))...
August 11, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28802138/inhibition-of-bioenergetic-metabolism-by-the-combination-of-metformin-and-2-deoxyglucose-highly-decreases-viability-of-feline-mammary-carcinoma-cells
#3
María Florencia Arbe, Chiara Fondello, Lucrecia Agnetti, Gabriel Martín Álvarez, Matías Nicolás Tellado, Gerardo Claudio Glikin, Liliana María Elena Finocchiaro, Marcela Solange Villaverde
Feline mammary carcinoma (FMC) is a highly aggressive pathology that has been proposed as an interesting model of breast cancer disease, especially for the hormone refractory subgroup. Recently, cancer cell metabolism has been described as a hallmark of cancer cells. Here, we investigate the effects and mechanism of metabolic modulation by metformin (MET, anti-diabetic drug), 2-deoxyglucose (2DG, hexokinase inhibitor) or a combination of both drugs, MET/2DG on two established FMC cells lines: AlRB (HER2 (3+) and Ki67<5%) and AlRATN (HER2 (-) and Ki67>15%)...
August 3, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28802015/identification-and-characterization-of-metformin-on-peptidomic-profiling-in-human-visceral-adipocytes
#4
Yao Gao, XingYun Wang, FangYan Huang, XianWei Cui, Yun Li, Xing Wang, Yan Cao, PengFei Xu, KaiPeng Xie, RanRan Tang, Le Zhang, ChenBo Ji, LiangHui You, XiRong Guo
OBJECTIVES: To gain insight into the effect of metformin on losing weight from peptidomic perspective and to screen potential active peptides for reducing fat lipid deposition. METHODS: After determining the proper concentration of metformin on human primary visceral adipocytes, we constructed a comparative peptidomic profiling between control and metformin treatment group (n = 3) using a stable isobaric labeling strategy involving tandem mass tag reagents, followed by liquid chromatography tandem mass spectrometry...
August 12, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28801594/deficiency-in-catechol-o-methyltransferase-is-linked-to-a-disruption-of-glucose-homeostasis-in-mice
#5
Megumi Kanasaki, Swayam Prakash Srivastava, Fan Yang, Ling Xu, Sumiyo Kudoh, Munehiro Kitada, Norikazu Ueki, Hyoh Kim, Jinpeng Li, Satoru Takeda, Keizo Kanasaki, Daisuke Koya
2-methoxyestradiol (2-ME), an estrogen metabolite generated via catechol-o-methyltransferase (COMT), is multifunctional methoxy-catechol. Here, we report that COMT deficiency leads to glucose intolerance and 2-ME rescues COMT-deficient-associated metabolic defects. Liver COMT protein was suppressed in high fat diet (HFD)-fed or in pregnant mice. COMT suppression, by Ro41-0960 or siRNA, in HFD fed mice or in pregnant mice exacerbated glucose intolerance; 2-ME intervention ameliorated these defects. 2-ME effects on glucose tolerance were associated with AMPK phosphorylation in the liver and in islet cells...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28801297/-effect-of-metformin-on-insulin-resistance-during-catch-up-growth-in-mice-with-fetal-growth-restriction
#6
Ping Peng, Chun-Ling Ma, Shu-Mei Wan, Wen-Sheng Jin, Yan Gao, Tian-Qing Huang, Qi Cheng, Chang-Lan Ye
OBJECTIVE: To study the efficacy of metformin intervention on insulin resistance during catch-up growth in mice with fetal growth restriction (FGR). METHODS: Mouse models of FGR were established by low protein diet feeding of the pregnant mice. Both the newborn female mice with FGR and normal control (NC) mice were randomized for feeding with a standard diet (SF) or a high-fat diet (HF) after weaning and treatment with gavage of either metformin or normal saline...
August 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28801099/immediate-reduction-of-serum-citrulline-but-no-change-of-steroid-profile-after-initiation-of-metformin-in-individuals-with-type-2-diabetes
#7
Michaela Breier, Simone Wahl, Cornelia Prehn, Uta Ferrari, Vanessa Sacco, Michaela Weise, Harald Grallert, Jerzy Adamski, Andreas Lechner
Metformin is the most important first-line treatment for type 2 diabetes mellitus (T2DM) but its exact mode of action remains unknown. In this study, we used targeted metabolomics to gain new insights into the metabolic effects of metformin in humans with T2DM. We also examined changes in the serum steroid hormone profile. We quantified 167 serum metabolites and 19 steroid hormones using liquid chromatography-tandem mass spectrometry at three time points in individuals with previously untreated T2DM: before the start of metformin therapy (time point A), after the first dose (B) and after short-term therapy for 4-6 weeks (C)...
August 8, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28800931/molecular-signatures-of-longevity-insights-from-cross-species-comparative-studies
#8
REVIEW
Siming Ma, Vadim N Gladyshev
Much of the current research on longevity focuses on the aging process within a single species. Several molecular players (e.g. IGF1 and MTOR), pharmacological compounds (e.g. rapamycin and metformin), and dietary approaches (e.g. calorie restriction and methionine restriction) have been shown to be important in regulating and modestly extending lifespan in model organisms. On the other hand, natural lifespan varies much more significantly across species. Within mammals alone, maximum lifespan differs more than 100 fold, but the underlying regulatory mechanisms remain poorly understood...
August 8, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28800055/metformin-and-alzheimer-s-disease-dementia-and-cognitive-impairment-a-systematic-review-protocol
#9
Jared M Campbell, Matthew D Stephenson, Barbora de Courten, Ian Chapman, Susan M Bellman, Edoardo Aromataris
The objective of the review is to assess the effect of metformin on the risk, progression and severity of Alzheimer's disease and other forms of dementia, as well as any measures of cognitive performance or impairment.
August 2017: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/28800002/finding-the-sweet-spot-for-metformin-in-18f-fdg-pet
#10
Michael Morris, Babak Saboury, Wengen Chen, Eliot L Siegel, Bahar Dasgeb
PURPOSE: The effect of oral hypoglycemic agents on fluorine-18-flurodeoxyglucose (F-FDG) uptake is less understood than the effect of exogenous insulin. In this study, the effect of withholding metformin on F-FDG distribution in subsequent PET imaging was evaluated. PATIENTS AND METHODS: A retrospective observational study was carried out. A total of 15 patients taking metformin were grouped according to the time interval from the last dose of metformin to F-FDG-PET...
August 10, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28799126/hydration-status-drug-interactions-and-determinants-in-a-spanish-elderly-population-a-pilot-study
#11
A M Puga, T Partearroyo, G Varela-Moreiras
Proper hydration is essential to maintain optimal health and well-being at all stages of life, especially for the elderly. Side effects of certain drugs that affect hydration status may compromise the health of the ancients, who also constitute the most vulnerable group. No studies have been carried out, to our knowledge, at the intersection of drugs and hydration status. Our study aimed to evaluate the effects of chronic use of certain drugs (diuretics, corticoids and metformin) in the hydration status of the elderly...
August 10, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28797524/systematic-review-of-metformin-monotherapy-and-dual-therapy-with-sodium-glucose-co-transporter-2-inhibitor-sglt-2-in-treatment-of-type-2-diabetes-mellitus
#12
Nagashekhara Molugulu, Lai Shu Yee, Yew Tze Ye, Tan Chew Khee, Lee Zhen Nie, Neoh Jia Yee, Tian Kar Yee, Tan Chee Liang, Prashant Kesharwani
BACKGROUND: Type 2 Diabetes Mellitus (T2DM) is a chronic disorder and its treatment with only metformin often does not provide optimum glycemic control. Addition of sodium glucose cotransporter 2 inhibitor (SGLT2) will improve the glycemic control in patients on metformin alone. In this study, an attempt is made to investigate the combined therapy of SGLT-2 with metformin in managing T2DM in terms of lowering HbA1c and body weight and monotherapy using metformin alone in HbA1c and body weight reduction...
July 25, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28795250/metformin-reduces-total-microparticles-and-microparticles-expressing-tissue-factor-in-women-with-polycystic-ovary-syndrome
#13
Laura M L Carvalho, Cláudia N Ferreira, Ana L Candido, Fernando M Reis, Mirelle O Sóter, Mariana F Sales, Ieda F O Silva, Fernanda F C Nunes, Karina Braga Gomes
PURPOSE: The objective of this study was to evaluate the levels of total microparticles (MPs) and microparticles-expressing tissue factor (TFMPs) in women with polycystic ovarian syndrome (PCOS) who use metformin comparing to those who do not take metformin. METHODS: We quantified total MPs and TFMPs in the plasma of 50 patients with PCOS-13 of these women used metformin (850 mg 2×/day during at least 6 months) and the other 37 did not. For this purpose, the microparticles (MPs) were purified by differential centrifugation of the plasma and, subsequently, by flow cytometry, using annexin-V and CD142 as markers...
August 9, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28794822/overview-of-glucagon-like-peptide-1-receptor-agonists-for-the-treatment-of-patients-with-type-2-diabetes
#14
Kelvin Lingjet Tran, Young In Park, Shalin Pandya, Navin John Muliyil, Brandon David Jensen, Kovin Huynh, Quang T Nguyen
BACKGROUND: It is estimated that 29.1 million people or 9.3% of the US population have diabetes, which contributes to considerable medical and financial burden. Type 2 diabetes mellitus is characterized by insulin resistance and insulin secretion impairment leading to hyperglycemia. The presence of insulin resistance is strongly correlated with obesity. OBJECTIVE: This article reviews the available glucagon-like peptide-1 (GLP-1) receptor agonists and their role in the management of patients with diabetes, to help guide the selection of the most suitable agent for the individualized treatment of patients with type 2 diabetes...
June 2017: American Health & Drug Benefits
https://www.readbyqxmd.com/read/28792171/glycemic-pentad
#15
Glycemic Pentad Forum
BACKGROUND: Conventionally, diabetes management involved targeting the triad of FPG, PPG, and HbA1c. However, several studies have suggested the quintessential need for a paradigm shift to incorporate glycemic variability and quality of life in the holistic diabetes control regimen. AIM: To generate a consensus and ratify the position of Glycemic Variability (GV) and Quality of Life (QOL), along with the traditional triad, in diabetes management in India. To evaluate whether the triple fixed dose combination of metformin, glimepiride, and voglibose can accomplish the goals of glycemic pentad...
July 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28791738/metformin-promotes-neuronal-differentiation-and-neurite-outgrowth-through-ampk-activation-in-human-bone-marrow-mesenchymal-stem-cells
#16
Min-Ji Ahn, Goang-Won Cho
Metformin is an AMP-activated kinase (AMPK) activator that plays a role in glucose energy metabolism and cell protection. It is widely used to treat several diseases, including type 2 diabetes, cardiovascular diseases, cancer, and metabolic diseases. In this study, we investigated whether AMPK activation upon treatment with metformin may promote neurite outgrowth during the progression of neuronal differentiation in human bone marrow-mesenchymal stem cells (hBM-MSCs). Differentiation of metformin-treated MSCs (Met-MSCs to Met-diMSCs) in the neuronal induction media resulted in an increase in the number of differentiated cells in a metformin concentration-dependent manner...
August 9, 2017: Biotechnology and Applied Biochemistry
https://www.readbyqxmd.com/read/28790226/effect-of-metformin-on-handgrip-strength-gait-speed-myostatin-serum-level-and-health-related-quality-of-life-a-double-blind-randomized-controlled-trial-among-non-diabetic-pre-frail-elderly-patients
#17
Purwita Wijaya Laksmi, Siti Setiati, Tirza Z Tamin, Pradana Soewondo, Wasilah Rochmah, Nafrialdi Nafrialdi, Joedo Prihartono
BACKGROUND: sarcopenia contributes to the development of frailty syndrome. Frailty syndrome is potentially improved by modifying insulin resistance, inflammation, and myostatin level. This study is aimed to investigate the effect of metformin on handgrip strength, gait speed, myostatin serum level, and health-related quality of life (HR-QoL) among non-diabetic pre-frail elderly patients. METHODS: a double blind randomized controlled trial study was conducted on non-diabetic elderly outpatients aged ≥ 60 years with pre-frail status based on phenotype and/ or index criteria (Cardiovascular Health Study and/ or Frailty Index 40 items) consecutively recruited from March 2015 to June 2016 at Cipto Mangunkusumo Hospital...
April 2017: Acta Medica Indonesiana
https://www.readbyqxmd.com/read/28789657/neutrophil-gelatinase-associated-lipocalin-ngal-is-elevated-in-type-2-diabetics-with-carotid-artery-stenosis-and-reduced-under-metformin-treatment
#18
W Eilenberg, S Stojkovic, A Piechota-Polanczyk, A Kaider, N Kozakowski, W J Weninger, J Nanobachvili, J Wojta, I Huk, S Demyanets, C Neumayer
BACKGROUND: Neutrophil gelatinase-associated lipocalin (NGAL), an acute phase protein released by neutrophils, has been described as biomarker of inflammatory states. Type 2 diabetes mellitus (T2DM) is characterized by increased inflammation and an elevated risk for embolization of carotid artery stenosis (CAS). We aimed to explore the role of NGAL systemically and in plaques of diabetics undergoing carotid endarterectomy. Moreover, the potential anti-inflammatory effect of metformin on NGAL was addressed in diabetics...
August 8, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28782312/epidemiologic-surveillance-of-glycemic-response-to-a-scored-breakable-extended-release-fixed-dose-combination-of-gliclazide-and-metformin-in-persons-with-type-2-diabetes
#19
Sanjay Kalra, Ashok Kumar Das
BACKGROUND: The combination of metformin and a sulphonylurea has been recommended for treatment of type 2 diabetes. A, scored, breakable, extended release, once daily fixed dose combination (FDC) of gliclazide and metformin is available in India. OBJECTIVE: To assess the initial blood glucose lowering efficacy, glycemic control and patient acceptability of the fixed dose combination of original gliclazide 60mg and metformin 500mg in an extended release, scored and breakable formulation (in a range of 1, 1½, and 2 tablets) among Indian patients in day to day practice...
June 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28782285/metformin-enhances-doxorubicin-sensitivity-via-inhibition-of-doxorubicin-efflux-in-p-gp-overexpressing-mcf-7-cells
#20
Vahid Shafiei-Irannejad, Nasser Samadi, Bahman Yousefi, Roya Salehi, Kobra Velaei, Nosratollah Zarghami
Resistance against chemotherapy is still a major problem in successful cancer treatment in the clinic. Therefore, identifying new compounds with lower side effects and higher efficacy is an important approach to overcome multidrug resistance (MDR). Here, we investigated the activity and possible mechanism of the antidiabetic drug, metformin, in human doxorubicin (DOX) resistant breast cancer (MCF-7/DOX) cells. The effect of metformin on the cytotoxicity of DOX was evaluated by MTT assay. The P-gp mRNA/protein expression levels following treatment with metformin was determined using real time polymerase chain reaction (RT-PCR) and western blot analysis, respectively...
August 6, 2017: Chemical Biology & Drug Design
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