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Diabetes models

Aksone Nouvong, Aaron M Ambrus, Ellen R Zhang, Lucas Hultman, Hilary Ann Coller
Chronic wounds are a common and debilitating complication for the diabetic population. It is challenging to study the development of chronic wounds in hu-man patients; by the time it is clear that a wound is chronic, the early phases of wound healing have passed and can no longer be studied. Because of this limita-tion, mouse models have been employed to better understand the early phases of chronic wound formation. In the past few years, a series of reports have high-lighted the importance of reactive oxygen species and bacterial biofilms in the development of chronic wounds in diabetics...
October 7, 2016: Physiological Genomics
Shehla Akbar, Fazal Subhan, Nasiara Karim, Muhammad Shahid, Nisar Ahmad, Gowhar Ali, Wajahat Mahmood, Khwaja Fawad
BACKGROUND: Diabetic neuropathy is the most prevalent, persistent and debilitating complication of diabetes mellitus often coupled with vulvodynia that may present as an isolated symptom or as a part of constellation of other neuropathic abnormalities. OBJECTIVE: Flavonoids have selective affinity for GABA receptors and 6-methoxyflavanone (6-MeOF) is a positive allosteric modulator of GABA responses at human recombinant GABAA receptors. GABAergic and opioidergic system inhibition have been shown to facilitate neuropathic pain...
October 17, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Ruth S Weinstock, Ingrid Schütz-Fuhrmann, Crystal G Connor, Julia M Hermann, David M Maahs, Morten Schütt, Shivani Agarwal, Sabine E Hofer, Roy W Beck, Reinhard W Holl
AIMS: Compare characteristics, therapies and clinical outcomes in older adults with type 1 diabetes in the United States T1D Exchange (T1DX) and German/Austrian Diabetes Patienten Verlaufsdokumentation (DPV) registries. METHODS: Cross-sectional study of adults ≥60years old with type 1 diabetes seen in 2011-2012 in the T1DX (n=1283) and DPV (n=2014) registries. Wilcoxon rank-sum test was used for continuous variables and chi-square test for categorical variables...
October 4, 2016: Diabetes Research and Clinical Practice
Kenji Sugawara, Kohei Honda, Yoshie Reien, Norihide Yokoi, Chihiro Seki, Harumi Takahashi, Kohtaro Minami, Ichiro Mori, Akio Matsumoto, Haruaki Nakaya, Susumu Seino
Insulin secretagogues are used for treatment of type 2 diabetes. We attempted to discover novel small molecules to stimulate insulin secretion by using in silico similarity search using sulfonylureas as query, followed by measurement of insulin secretion. Among 38 compounds selected by in silico similarity search, we found three diphenylsemicarbazides and one quinolone that stimulate insulin secretion. We focused on compound 8 (C8), which had the strongest insulin-secreting effect. Based on the structure-activity relationship of C8-derivatives, we identified diphenylthiosemicarbazide (DSC) 108 as the most potent secretagogue...
2016: PloS One
Motoko Tanaka, Kazuki Yoshida, Shingo Fukuma, Kazuko Ito, Kazutaka Matsushita, Masafumi Fukagawa, Shunichi Fukuhara, Tadao Akizawa
OBJECTIVES: Anemia is an important prognostic factor in hemodialysis patients. It has been reported that parathyroidectomy ameliorates anemia and reduces the requirement of postoperative erythropoiesis-stimulating agents. The objective of this study was to assess the effect of cinacalcet, which is considered as a pharmacological parathyroidectomy, on anemia in hemodialysis patients. METHODS: We used data from a prospective cohort of Japanese hemodialysis patients with secondary hyperparathyroidism; the criteria were: intact parathyroid hormone concentrations ≥ 180 pg/mL or use of an intravenous or oral vitamin D receptor activator...
2016: PloS One
Andrew C Patterson, Gerry Veenstra
OBJECTIVES: Intersectionality theory proposes that each combination of social categories derived from gender, race and nationality, such as immigrant White man or native-born Black woman, is associated with unique social experiences. We tested the potential of intersectionality theory for explicating racial inequalities in Canada by investigating whether Black-White health inequalities are conditioned by gender and immigrant status in a synergistic way. METHODS: Our dataset comprised 10 cycles (2001-2013) of the Canadian Community Health Survey...
October 20, 2016: Canadian Journal of Public Health. Revue Canadienne de Santé Publique
Roberta Lupoli, Pasquale Ambrosino, Anna Tortora, Livia Barba, Gelsy Arianna Lupoli, Matteo Nicola Dario Di Minno
BACKGROUND: Several studies reported an increased cardiovascular (CV) risk in Cushing's syndrome (CS). We performed a meta-analysis on the impact of CS on major markers of atherosclerosis. METHODS: Studies on intima-media thickness (IMT), carotid plaques prevalence and flow-mediated dilation (FMD) in CS patients and controls were searched in the PubMed, Web of Science, Scopus and EMBASE. Differences between cases and controls were expressed as mean difference (MD) with 95% confidence intervals (95%CI) for continuous variables, and as Odds Ratio (OR) with 95%CI for dichotomous variables...
October 20, 2016: Annals of Medicine
Ronit Weisman
All organisms can respond to the availability of nutrients by regulating their metabolism, growth, and cell division. Central to the regulation of growth in response to nutrient availability is the target of rapamycin (TOR) signaling that is composed of two structurally distinct complexes: TOR complex 1 (TORC1) and TOR complex 2 (TORC2). The TOR genes were first identified in yeast as target of rapamycin, a natural product of a soil bacterium, which proved beneficial as an immunosuppressive and anticancer drug and is currently being tested for a handful of other pathological conditions including diabetes, neurodegeneration, and age-related diseases...
October 2016: Microbiology Spectrum
Bonglee Kim, Moon-Jea Woo, Chul-Soo Park, Sang-Hun Lee, Jin-Soo Kim, Boim Kim, Seho An, Sung-Hoon Kim
Hovenia dulcis Thunb. (HDT) was known to have anti-fatigue, anti-diabetes, neuroprotective, and hepatoprotective effects. In the present study, the anti-fatty liver mechanism of HDT was elucidated in oleic acid (OA)-treated Hep G2 cells and acute hyperlipidemia mouse model using Triton WR-1339. Here, HDT activated p-AMP-activated protein kinase (p-AMPK), proliferator activated receptor-α, carnitine palmitoyltransferase and also inhibited the expression of lipogenesis and cholesterol synthesis proteins, such as 3-hydroxy-3-methylglutaryl-CoA reductase, sterol regulatory element binding protein-1c, SREBP-2, and fatty acid synthase in OA-treated Hep G2 cells...
October 20, 2016: Phytotherapy Research: PTR
Jung-Woo Park, Jin-Soo Park, Seyoung Kim, Minkyu Park, Hyunrim Choi, Sinye Lim
BACKGROUND: This study is aimed at finding out the relationship between long working hours, one of major job stress elements, and hearing impairment in unexposed workers to occupational and environmental noise. METHODS: This study was performed on 1628 regular, full-time wage workers between the age of 25-64 who indicated in the survey of having no experience of exposure to noise, normal otoscopic findings, and not suffering from diabetes based on the data from the fifth Korea National Health and Nutrition Examination Survey (KNHANES 2010-2012)...
2016: Annals of Occupational and Environmental Medicine
Lavanya Kakarla, Suresh Babu Katragadda, Ashok K Tiwari, K Srigiridhar Kotamraju, K Madhusudana, D Anand Kumar, Mahendran Botlagunta
BACKGROUND: Cyperus scariosus R. Br and Cyperus rotundus L are widely used in ayurvedic preparation for the treatment of diabetes and other diseases. The early literature, so far, does not indicate the presence of any bioactive principle isolated from these plants. OBJECTIVE: To identify free radical scavenging, anti-diabetic and anti- inflammatory principles from these two species. MATERIALS AND METHODS: The bioassay guided fractionation and isolation of active constituents was done by chromatographic techniques...
July 2016: Pharmacognosy Magazine
Monika Ryba-Stanisławowska, Paulina Werner, Maria Skrzypkowska, Agnieszka Brandt, Jolanta Myśliwska
IL-33 is an IL-1 cytokine family member, with ability to induce both Th1 and Th2 immune responses. It binds to ST2 receptor, whose deficiency is associated with enhanced inflammatory response. The most recent studies have shown the immunoregulatory effect of IL-33 on Tregs in animal models. As type 1 diabetes is an autoimmune, inflammatory disease, where Treg defects have been described, we aimed to analyze the in vitro influence of recombinant IL-33 on quantitative properties of regulatory CD4(+)CD25(high)FOXP3(+) T cells...
2016: Mediators of Inflammation
James Gilligan, Bandy X Lee, Shikha Garg, Morkeh Blay-Tofey, Audrey Luo
Many national and international institutions advocate approaching violence as a problem in public health and preventive medicine, in a manner similar to the way we address other disabling and life-threatening pathologies such as cancer, diabetes, and heart disease. Prevention by a health model requires an ecological perspective. Previous work has found evidence that economic factors, including unemployment and relative poverty, as well as political culture and values, may affect violent death rates, including homicide and suicide...
September 2016: Journal of Public Health Policy
X H Sun, M S Yin, Y L Mu
Objective: To investigate the alterations of mTOR signaling pathway and autophagy in the development of type 2 diabetes and early diabetic cardiomyopathy and to study their roles in pathogenesis of diabetic myocardium. Methods: A type 2 diabetes rat model was established by injection of streptozocin after five-week of high fat diet. The rats were randomly divided into control group, experiment group of 2 weeks and experiment group of 4 weeks. Alterations of mTOR, p-mTOR, S6K1, Beclin-1 and LC3-Ⅱ expression in myocardium were determined by Western blot and immunohistochemistry...
October 8, 2016: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
Welma Stonehouse, Grant D Brinkworth, Campbell H Thompson, Mahinda Y Abeywardena
BACKGROUND AND AIMS: In vitro, ex vivo and animal studies suggest palm-based tocotrienols and carotenes enhance vascular function, but limited data in humans exists. The aim was to examine the effects of palm-tocotrienols (TRF- 80) and palm-carotene (CC-60) supplementation on vascular function and cardiovascular disease (CVD) risk factors in adults at increased risk of impaired vascular function. METHODS: Ninety men and women (18-70 yr, 20-45 kg/m(2)) with type 2 diabetes, impaired fasting glucose and/or elevated waist circumference were randomised to consume either TRF-80 (420 mg/day tocotrienol + 132 mg/day tocopherol), CC-60 (21 mg/day carotenes) or placebo (palm olein) supplements for 8 weeks...
October 14, 2016: Atherosclerosis
Xing-Si Peng, Guo-Feng Xie, Wen-Ze Qiu, Yun-Hong Tian, Wei-Jun Zhang, Ka-Jia Cao
BACKGROUND: Diabetes has been identified as an adverse prognostic variable which associated with an increased mortality in various cancers, including colorectal, lung, and breast cancers. However, previous studies provided inconsistent results on the association between diabetes and nasopharyngeal carcinoma (NPC). The main aim of this study was to investigate the associations between diabetes mellitus and the survival of NPC patients. METHODS: This study was designed as a 1:2 matched case-control study...
2016: PloS One
Jianyin Long, Shawn S Badal, Zengchun Ye, Yin Wang, Bernard A Ayanga, Daniel L Galvan, Nathanael H Green, Benny H Chang, Paul A Overbeek, Farhad R Danesh
The regulatory roles of long noncoding RNAs (lncRNAs) in transcriptional coactivators are still largely unknown. Here, we have shown that the peroxisome proliferator-activated receptor γ (PPARγ) coactivator α (PGC-1α, encoded by Ppargc1a) is functionally regulated by the lncRNA taurine-upregulated gene 1 (Tug1). Further, we have described a role for Tug1 in the regulation of mitochondrial function in podocytes. Using a murine model of diabetic nephropathy (DN), we performed an unbiased RNA-sequencing (RNA-seq) analysis of kidney glomeruli and identified Tug1 as a differentially expressed lncRNA in the diabetic milieu...
October 17, 2016: Journal of Clinical Investigation
Peter Kruzliak, Alexander Berezin, Alexander Kremzer, Tatyana Samura, Roman Benacka, Ioana Mozos, Emmanuel Egom, Luis Rodrigo
BACKGROUND: Biomechanical stress and inflammatory biomarkers relate to global contractility dysfunction; however, adding these biomarkers into a risk model constructed on clinical data does not improve its prediction value in chronic heart failure (CHF). AIM: The aim of this study was to evaluate whether biomarkers predict declining of left ventricular global contractility function in diabetic patients with ischemia-induced CHF. PATIENTS AND METHODS: The study retrospectively evolved 54 diabetic patients who had systolic or diastolic ischemia-induced CHF that was defined as left-ventricular ejection fraction (LVEF) ≤45% or 46-55% respectively assessed by quantitative echocardiography and other conventional criteria according to current clinical guidelines...
September 1, 2016: Folia Medica
I-Shiang Tzeng, Su-Hsun Liu, Kuan-Fu Chen, Chin-Chieh Wu, Jih-Chang Chen
To reduce patient boarding time at the emergency department (ED) and to improve the overall quality of the emergent care system in Taiwan, the Minister of Health and Welfare of Taiwan (MOHW) piloted the Grading Responsible Hospitals for Acute Care (GRHAC) audit program in 2007-2009.The aim of the study was to evaluate the impact of the GRHAC audit program on the identification and management of acute myocardial infarction (AMI)-associated ED visits by describing and comparing the incidence of AMI-associated ED visits before (2003-2007), during (2007-2009), and after (2009-2012) the initial audit program implementation...
October 2016: Medicine (Baltimore)
Qin Qiao, Ruxi Qi, Guanghong Wei, Xuhui Huang
Amyloid deposits of human islet amyloid polypeptide (hIAPP) are identified in 95% of type II diabetes patients. The oligomers during the early stage of hIAPP aggregation are believed to be more cytotoxic than the mature fibrils. However, the structural details during the initial stage of hIAPP aggregation are still under debate experimentally. To understand its initial nucleation mechanism, we investigate the thermodynamics and kinetics of hIAPP(11-25) dimerization, which is the first manifestation of the interplay between intra- and inter-molecular interactions, via the construction of Markov state models from extensive molecular dynamics simulations...
October 19, 2016: Physical Chemistry Chemical Physics: PCCP
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