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https://www.readbyqxmd.com/read/29345910/qualitative-and-quantitative-analysis-of-ethanolic-extract-and-phenolic-fraction-of-jatropha-aethiopica-euphorbiaceae-leaves-and-their-hypoglycemic-potential
#1
Daylin Gamiotea-Turro, Nathalia Aparecida de Paula Camaforte, Alexander Barbaro Valerino-Diaz, Yarelis Ortiz Nunez, Daniel Rinaldo, Anne Ligia Dokkedal, José Roberto Bosqueiro, Lourdes Campaner Dos Santos
While Jatropha aethiopica, popularly known in Cuba as "mata diabetes", is used in salads and as a dietary supplement, its chemical composition and antidiabetic properties yet remains unclear. In this work, we evaluate the qualitative and quantitative composition of ethanolic extract (EE) and phenolic fraction (PF) of Jatropha aethiopica, leaves and their hypoglycemic and hypolipidemic activity. Chemical fractionation of the ethanolic extract yielded nine compounds, which included protocatechuic acid (1), chlorogenic acid (2), caffeic acid (3), quercetin 3-O-α-L-rhamnopyranosyl-(1→2)-[α-L-rhamnopyranolsyl-(1→6)]-β-D-galactopyranoside (4), a new kaempferol 3-O-α-L-rhamnopyranosyl-(1→4)-[α-L-rhamnopyranolsyl-(1→6)]-β-D-galactopyranoside (5), kaempferol 3-O-α-L-rhamnopyranosyl-(1→2[α-L-rhamnopyranolsyl-(1→6)]-β-D-glucopyranoside (6), rutin (7), kaempferol 3-O-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranoside (8) and quercetin (9)...
January 18, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29345505/the-pharmacological-management-of-metabolic-syndrome
#2
Julie Rask Larsen, Lorena Dima, Christoph U Correll, Peter Manu
Introduction The metabolic syndrome includes a constellation of several well-established risk factors, which need to be aggressively treated in order to prevent overt type 2 diabetes and cardiovascular disease. While recent guidelines for the treatment of individual components of the metabolic syndrome focus on cardiovascular benefits as resulted from clinical trials, specific recent recommendations on the pharmacological management of metabolic syndrome are lacking. The objective of present paper was to review the therapeutic options for metabolic syndrome and its components, the available evidence related to their cardiovascular benefits, and to evaluate the extent to which they should influence the guidelines for clinical practice...
January 18, 2018: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/29344438/new-therapeutic-approaches-in-obesity-and-metabolic-syndrome-associated-with-polycystic-ovary-syndrome
#3
REVIEW
Fatima Saleem, Syed W Rizvi
Polycystic ovary syndrome (PCOS) is a pathophysiological disorder affecting reproductive and metabolic indices. PCOS is commonly associated with a high prevalence of insulin resistance and obesity; this association carries an increased risk of developing metabolic syndrome, type 2 diabetes mellitus (T2DM), and cardiovascular disease. Guidelines recommend lifestyle modification, metformin, hormonal contraceptives (HCs), and bariatric surgery as the main treatment options in obese patients with PCOS. Studies are being conducted to test the efficacy of existing treatment options as well as to discover new therapies...
November 13, 2017: Curēus
https://www.readbyqxmd.com/read/29344336/treating-nonalcoholic-fatty-liver-disease-in-patients-with-type-2-diabetes-mellitus-a-review-of-efficacy-and-safety
#4
REVIEW
Elizabeth P Mills, K Paige D Brown, Jennifer D Smith, Phillip W Vang, Katie Trotta
Objective: To review current literature for the efficacy and safety of treatment for nonalcoholic fatty liver disease (NAFLD) in patients with type 2 diabetes mellitus (T2DM). Data sources: A PubMed literature search from January 1990 to June 2017 was conducted using the search terms nonalcoholic fatty liver disease, diabetes mellitus, type 2, therapy, treatment, treat, therapeutics, nonalcoholic fatty liver, nonalcoholic hepatosteatosis, NASH, NAFLD, metformin, and statin...
January 2018: Therapeutic Advances in Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29344225/metformin-enhances-the-chemosensitivity-of-hepatocarcinoma-cells-to-cisplatin-through-ampk-pathway
#5
Hao Dong, Jungang Huang, Kang Zheng, Dong Tan, Qi Chang, Genqiang Gong, Qing Zhang, Hanqiu Tang, Jianguo Sun, Shaoyu Zhang
This study investigated the effect of metformin on chemosensitivity of hepatocarcinoma cells to cisplatin and the possible mechanism. HepG2 and Huh-7 hepatoma cells were treated with cisplatin at concentrations of 0, 2, 4, 6, 8 and 10 µM for 48 h. Proliferation of HepG2 and Huh-7 hepatoma cells were detected by MTT assay. Apoptosis of hepatocellular carcinoma cells was detected by flow cytometry. Western blot analysis was used to detect the expression of 5-monophosphate-activated protein kinase (AMPK) and p-AMPK protein...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29344202/metformin-in-combination-with-cisplatin-inhibits-cell-viability-and-induces-apoptosis-of-human-ovarian-cancer-cells-by-inactivating-erk-1-2
#6
Jian-Hong Dang, Zhi-Jun Jin, Xiao-Jun Liu, Dian Hu, Jing Wang, Yan Luo, Ling-Ling Li
Metformin protects against insulin resistance by restoring insulin sensitivity and may also possess anticancer activity. The aim of the present study was to investigate the effects of metformin alone or combined with cisplatin (DDP) on the cell viability and apoptosis of HO-8910 human ovarian cancer cells, and to investigate metformin as a potential novel therapeutic for treating ovarian cancer. The viability of HO-8910 cells was assessed using a cell proliferation and cytotoxicity assay following treatment with different concentrations of metformin (0...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29343628/keeping-the-home-fires-burning-amp-activated-protein-kinase
#7
REVIEW
D Grahame Hardie
Living cells obtain energy either by oxidizing reduced compounds of organic or mineral origin or by absorbing light. Whichever energy source is used, some of the energy released is conserved by converting adenosine diphosphate (ADP) to adenosine triphosphate (ATP), which are analogous to the chemicals in a rechargeable battery. The energy released by the conversion of ATP back to ADP is used to drive most energy-requiring processes, including cell growth, cell division, communication and movement. It is clearly essential to life that the production and consumption of ATP are always maintained in balance, and the AMP-activated protein kinase (AMPK) is one of the key cellular regulatory systems that ensures this...
January 2018: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29343420/ampk-re-activation-suppresses-hepatic-steatosis-but-its-downregulation-does-not-promote-fatty-liver-development
#8
Nadia Boudaba, Allison Marion, Camille Huet, Rémi Pierre, Benoit Viollet, Marc Foretz
Nonalcoholic fatty liver disease is a highly prevalent component of disorders associated with disrupted energy homeostasis. Although dysregulation of the energy sensor AMP-activated protein kinase (AMPK) is viewed as a pathogenic factor in the development of fatty liver its role has not been directly demonstrated. Unexpectedly, we show here that liver-specific AMPK KO mice display normal hepatic lipid homeostasis and are not prone to fatty liver development, indicating that the decreases in AMPK activity associated with hepatic steatosis may be a consequence, rather than a cause, of changes in hepatic metabolism...
January 9, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29342230/metformin-as-an-anti-cancer-agent-actions-and-mechanisms-targeting-cancer-stem-cells
#9
Nipun Saini, Xiaohe Yang
Metformin, a first line medication for type II diabetes, initially entered the spotlight as a promising anti-cancer agent due to epidemiologic reports that found reduced cancer risk and improved clinical outcomes in diabetic patients taking metformin. To uncover the anti-cancer mechanisms of metformin, preclinical studies determined that metformin impairs cellular metabolism and suppresses oncogenic signaling pathways, including receptor tyrosine kinase, PI3K/Akt, and mTOR pathways. Recently, the anti-cancer potential of metformin has gained increasing interest due to its inhibitory effects on cancer stem cells (CSCs), which are associated with tumor metastasis, drug resistance, and relapse...
October 7, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29342199/a-non-linear-pharmacokinetic-pharmacodynamic-relationship-of-metformin-in-healthy-volunteers-an-open-label-parallel-group-randomized-clinical-study
#10
Hyewon Chung, Jaeseong Oh, Seo Hyun Yoon, Kyung-Sang Yu, Joo-Youn Cho, Jae-Yong Chung
BACKGROUND: The aim of this study was to explore the pharmacokinetic-pharmacodynamic (PK-PD) relationship of metformin on glucose levels after the administration of 250 mg and 1000 mg of metformin in healthy volunteers. METHODS: A total of 20 healthy male volunteers were randomized to receive two doses of either a low dose (375 mg followed by 250 mg) or a high dose (1000 mg followed by 1000 mg) of metformin at 12-h intervals. The pharmacodynamics of metformin was assessed using oral glucose tolerance tests before and after metformin administration...
2018: PloS One
https://www.readbyqxmd.com/read/29341443/stachyose-improves-inflammation-through-modulating-gut-microbiota-of-high-fat-diet-streptozotocin-induced-type-2-diabetes-in-rats
#11
Guimei Liu, Jia Bei, Li Liang, Guoyong Yu, Lu Li, Quanhong Li
SCOPE: The present study was undertaken to assess the effects of stachyose (STS) on type 2 diabetes in rats, and changes in the gut microbiota compared to metformin (MET). METHODS AND RESULTS: The type 2 diabetic model was successfully established via a high-fat diet (HFD) / streptozotocin (STZ) in Wistar rats, and STS or MET was administered for 4 weeks. Blood was collected to analyze biochemical parameters, pancreas for mRNA expression of related gene and contents of colon for gut microbiota...
January 16, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29340159/recurrent-lactic-acidosis-and-hypoglycemia-with-inadvertent-metformin-use-a-case-of-look-alike-pills
#12
Tess Jacob, Renee Garrick, Michael D Goldberg
Metformin is recommended as the first-line agent for the treatment of type 2 diabetes. Although this drug has a generally good safety profile, rare but potentially serious adverse effects may occur. Metformin-associated lactic acidosis, although very uncommon, carries a significant risk of mortality. The relationship between metformin accumulation and lactic acidosis is complex and is affected by the presence of comorbid conditions such as renal and hepatic disease. Plasma metformin levels do not reliably correlate with the severity of lactic acidosis...
2018: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/29340030/increased-efficacy-of-metformin-corresponds-to-differential-metabolic-effects-in-the-ovarian-tumors-from-obese-versus-lean-mice
#13
Jianjun Han, Weiya Z Wysham, Yan Zhong, Hui Guo, Lu Zhang, Kim M Malloy, Hallum K Dickens, Gene Huh, Douglas Lee, Liza Makowski, Chunxiao Zhou, Victoria L Bae-Jump
Obesity is a significant risk factor for ovarian cancer (OC) and associated with worse outcomes for this disease. We assessed the anti-tumorigenic effects of metformin in human OC cell lines and a genetically engineered mouse model of high grade serous OC under obese and lean conditions. Metformin potently inhibited growth in a dose-dependent manner in all four human OC cell lines through AMPK/mTOR pathways. Treatment with metformin resulted in G1 arrest, induction of apoptosis, reduction of invasion and decreased hTERT expression...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339526/the-diversity-of-gestational-diabetes-a-therapeutic-challenge
#14
Elisabeth Qvigstad
Metformin as the first drug of choice for glucose lowering in gestational diabetes (GDM) is still controversial, despite recent publications reporting similar outcomes in comparison to insulin, both for offspring and mothers. The use of metformin during pregnancy is increasing and several recent guidelines recommend metformin use in GDM pregnancies. Background, current metformin use and unresolved concerns are discussed in the context of the article from Gante et al. (Gante I, Melo L, Dores J, Ruas L & Almeida MDC...
January 16, 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/29339119/targeting-of-stress-response-pathways-in-the-prevention-and-treatment-of-cancer
#15
REVIEW
Jaroslav Zelenka, Martina Koncošová, Tomáš Ruml
The hallmarks of tumor tissue are not only genetic aberrations but also the presence of metabolic and oxidative stress as a result of hypoxia and lactic acidosis. The stress activates several prosurvival pathways including metabolic remodeling, autophagy, antioxidant response, mitohormesis, and glutaminolysis, whose upregulation in tumors is associated with a poor survival of patients, while their activation in healthy tissue with statins, metformin, physical activity, and natural compounds prevents carcinogenesis...
January 12, 2018: Biotechnology Advances
https://www.readbyqxmd.com/read/29338714/the-effects-of-metformin-in-type-1-diabetes-mellitus
#16
Selvihan Beysel, Ilknur Ozturk Unsal, Muhammed Kizilgul, Mustafa Caliskan, Bekir Ucan, Erman Cakal
BACKGROUND: This retrospective study investigated the effect of adding metformin to pharmacologic insulin dosing in type 1 diabetics on insulin therapy 1 year after treatment compared with patients on insulin therapy alone. METHODS: Twenty-nine adults with type 1 diabetes who had metformin added to their insulin therapy for 12 months were compared with 29 adults with type 1 diabetes who remained on insulin-alone therapy. RESULTS: Fifty-eight patients with C peptide negative-type 1 diabetics (26 females, mean age: 29...
January 16, 2018: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/29338275/metformin-use-associated-with-protective-effects-for-ocular-complications-in-patients-with-type-2-diabetes-observational-study
#17
Sanita Maleškić, Jasna Kusturica, Edis Gušić, Maida Rakanović-Todić, Damir Šečić, Lejla Burnazović-Ristić, Aida Kulo
OBJECTIVE: The aim was to study the association of the use of an oral antihyperglycemic agent metformin with the presence of ocular complications in patients with type 2 diabetes (T2D). METHODS: Medical records were reviewed for 234 patients with diagnosed T2D. 81.2% (n=190) patients were using metformin and 18.8% (n=44) using other oral antihyperglycemic agents. Plasma glucose concentration, glycated haemoglobin, and the presence of ocular complications in patients treated with metformin were compared to those in patients treated with other oral antihyperglycemic agents...
November 2017: Acta Medica Academica
https://www.readbyqxmd.com/read/29337896/caffeic-acid-and-metformin-inhibit-invasive-phenotype-induced-by-tgf-%C3%AE-1-in-c-4i-and-htb-35-siha-human-cervical-squamous-carcinoma-cells-by-acting-on-different-molecular-targets
#18
Malgorzata Tyszka-Czochara, Malgorzata Lasota, Marcin Majka
During the progression of epithelial cancer, the cells may lose epithelial markers and gain mesenchymal phenotype via Epithelial-Mesenchymal Transition (EMT). Such transformation of epithelial cancer cells to mesenchymal-like characteristic benefits plasticity and supports their ability to migrate. The aim of this study was to evaluate the influence of natural compound Caffeic Acid (CA) alone and in combination with antidiabetic drug Metformin (Met) on metastatic progression of two human cervical squamous cell cancer lines, C-4I and HTB-35/SiHa cells...
January 16, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29334602/high-dose-metformin-plus-temozolomide-shows-increased-anti-tumor-effects-in-glioblastoma-in-vitro-and-in-vivo-compared-with-monotherapy
#19
Jung Eun Lee, Ji Hee Lim, Yong Kil Hong, Seung Ho Yang
Purpose: The purpose of the study is to investigate the efficacy of combined treatment with temozolomide (TMZ) and metformin for glioblastoma (GBM) in vitro and in vivo. Materials and Methods: We investigated the efficacy of combined treatment with TMZ and metformin using cell viability and apoptosis assays. A GBM orthotopic mice model was established by inoculation of 5x105 U87 cells and treated with metformin, TMZ, and the combination for 4 weeks. Western blotting and immunofluorescence of tumor specimens were analyzed to investigate AMP-activated protein kinase (AMPK) and AKT pathway...
January 10, 2018: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/29333122/metformin-enhanced-in-vitro-radiosensitivity-associates-with-g2-m-cell-cycle-arrest-and-elevated-adenosine-5-monophosphate-activated-protein-kinase-levels-in-glioblastoma
#20
Sebastian Adeberg, Denise Bernhardt, Semi B Harrabi, Nils H Nicolay, Juliane Hörner-Rieber, Laila König, Michael Repka, Angela Mohr, Amir Abdollahi, Klaus-Josef Weber, Juergen Debus, Stefan Rieken
Background: It is hypothesized that metabolism plays a strong role in cancer cell regulation. We have recently demonstrated improved progression-free survival in patients with glioblastoma who received metformin as an antidiabetic substance during chemoradiation. Although metformin is well-established in clinical use the influence of metformin in glioblastoma is far from being understood especially in combination with other treatment modalities such as radiation and temozolomide. Materials and Methods: In this study, we examined the influence of metformin in combinations with radiation and temozolomide on cell survival (clonogenic survival), cell cycle (routine flow cytometric analysis, FACScan), and phosphorylated Adenosine-5'-monophosphate-activated protein kinase (AMPK) (Phopho-AMPKalpha1 - ELISA) levels in glioblastoma cell lines LN18 and LN229...
December 2017: Radiology and Oncology
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