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Mitochondrial diabetes

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https://www.readbyqxmd.com/read/28322157/diabetes-related-neurological-implications-and-pharmacogenomics
#1
Rojas Carranza Camilo Andrés, Bustos Cruz Rosa Helena, Pino Pinzón Carmen Juliana, Ariza Marquez Yeimy Viviana, Gómez Bello Rosa Margarita, Cañadas Garre Marisa
Diabetes mellitus (DM) is the most commonly occurring cause of neuropathy around the world and is beginning to grow in countries where there is a risk of obesity. DM Type II, (T2DM) is a common age-related disease and is a major health concern, particularly in developed countries in Europe where the population is aging. T2DM is a chronic disease which is characterised by hyperglycemia, hyperinsulinemia and insulin resistance, together with the body's inability to use glucose as energy. Such metabolic disorder produces a chronic inflammatory state, as well as changes in lipid metabolism leading to hypertriglyceridemia, thereby producing chronic deterioration of the organs and premature morbidity and mortality...
March 17, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28321085/diabetes-due-to-mitochondrial-adipopathy
#2
Josef Finsterer, Marlies Frank
No abstract text is available yet for this article.
2017: Internal Medicine
https://www.readbyqxmd.com/read/28321084/diabetes-due-to-mitochondrial-adipopathy
#3
Hiroyo Ninomiya, Ayumu Hirata, Junji Kozawa, Akihisa Imagawa, Iichiro Shimomura
No abstract text is available yet for this article.
2017: Internal Medicine
https://www.readbyqxmd.com/read/28316125/deferoxamine-activated-hypoxia-inducible-factor-1-restores-cardioprotective-effects-of-sevoflurane-postconditioning-in-diabetic-rats
#4
Peng Xie, Long Yang, Ailaiti Talaiti, Jianjiang Wu, Jin Yu, Tian Yu, Haiying Wang, Bo Huang, Qin Wu, Yiliyaer Maimaitili, Jiang Wang, Haiping Ma, Yining Yang, Hong Zheng
AIM: The cardioprotective effects of sevoflurane postconditioning (SpostC) are eliminated under diabetic conditions, and the underlying mechanism for this phenomenon remains unclear. Many studies have demonstrated that the hypoxia-inducible factor-1(HIF-1) signaling pathway in the myocardium is impaired under diabetic conditions. This study was to investigate whether deferoxamine (DFO)-induced activation of HIF-1 signaling pathway can restore the cardioprotective effects of SpostC in diabetic rats...
March 17, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28316022/suppression-of-inner-mitochondrial-membrane-peptidase-2-like-immp2l-gene-exacerbates-hypoxia-induced-neural-death-under-high-glucose-condition
#5
Yi Ma, Zijing Zhang, Zhirong Chen, Nina Ma, Shihui Sun, Jingwen Zhang, Xinli Ni, Jianzhong Zhang, P Andy Li
It is known that diabetes hyperglycemia enhances cerebral ischemia and reperfusion induced damage. We have previously shown that mutation of inner mitochondrial membrane peptidase 2-like (IMMP2L) increases brain damage caused by transient cerebral ischemia. In this study, we attempt to examine the impact of IMMP2L deficiency on an in vitro model that mimics the diabetic hypoxic conditions. Normal IMMP2L wild type and IMMP2L gene deleted HT22 cells were cultured. Hypoxia was induced under high glucose and acidic conditions with 4 h of oxygen deprivation...
March 18, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28303572/intracellular-calcium-release-channels-an-update
#6
Gaetano Santulli, Ryutaro Nakashima, Qi Yuan, Andrew R Marks
Ryanodine receptors (RyRs) and inositol 1,4,5-trisphosphate receptors (IP3Rs) are calcium (Ca(2+) ) release channels on the endo/sarcoplasmic reticulum (ER/SR). Here we summarize the latest advances in the field, describing the recently discovered mechanistic roles of intracellular Ca(2+) release channels in the regulation of mitochondrial fitness and endothelial function, providing novel therapeutic options for the treatment of heart failure, hypertension, and diabetes mellitus. This article is protected by copyright...
March 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28303408/methylene-blue-decreases-mitochondrial-lysine-acetylation-in-the-diabetic-heart
#7
Jessica M Berthiaume, Chia-Heng Hsiung, Alison B Austin, Sean P McBrayer, Mikayla M Depuydt, Margaret P Chandler, Masaru Miyagi, Mariana G Rosca
Diabetic cardiomyopathy is preceded by mitochondrial alterations, and progresses to heart failure. We studied whether treatment with methylene blue (MB), a compound that was reported to serve as an alternate electron carrier within the mitochondrial electron transport chain (ETC), improves mitochondrial metabolism and cardiac function in type 1 diabetes. MB was administered at 10 mg/kg/day to control and diabetic rats. Both echocardiography and hemodynamic studies were performed to assess cardiac function...
March 16, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28303003/effects-of-high-intensity-interval-training-and-moderate-intensity-continuous-training-on-glycaemic-control-and-skeletal-muscle-mitochondrial-function-in-db-db-mice
#8
Vivien Chavanelle, Nathalie Boisseau, Yolanda F Otero, Lydie Combaret, Dominique Dardevet, Christophe Montaurier, Geoffrey Delcros, Sébastien L Peltier, Pascal Sirvent
Physical activity is known as an effective strategy for prevention and treatment of Type 2 Diabetes. The aim of this work was to compare the effects of a traditional Moderate Intensity Continuous Training (MICT) with a High Intensity Interval Training (HIIT) on glucose metabolism and mitochondrial function in diabetic mice. Diabetic db/db male mice (N = 25) aged 6 weeks were subdivided into MICT, HIIT or control (CON) group. Animals in the training groups ran on a treadmill 5 days/week during 10 weeks...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28298952/insights-for-oxidative-stress-and-mtor-signaling-in-myocardial-ischemia-reperfusion-injury-under-diabetes
#9
REVIEW
Dajun Zhao, Jian Yang, Lifang Yang
Diabetes mellitus (DM) displays a high morbidity. The diabetic heart is susceptible to myocardial ischemia/reperfusion (MI/R) injury. Impaired activation of prosurvival pathways, endoplasmic reticulum (ER) stress, increased basal oxidative state, and decreased antioxidant defense and autophagy may render diabetic hearts more vulnerable to MI/R injury. Oxidative stress and mTOR signaling crucially regulate cardiometabolism, affecting MI/R injury under diabetes. Producing reactive oxygen species (ROS) and reactive nitrogen species (RNS), uncoupling nitric oxide synthase (NOS), and disturbing the mitochondrial quality control may be three major mechanisms of oxidative stress...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28298255/using-mutpred-derived-mtdna-load-scores-to-evaluate-mtdna-variation-in-hypertension-and-diabetes-in-a-two-population-cohort-the-sabpa-study
#10
Marianne Venter, Leone Malan, Etresia van Dyk, Joanna L Elson, Francois H van der Westhuizen
Mitochondrial DNA (mtDNA) variation has been implicated in many common complex diseases, but inconsistent and contradicting results are common. Here we introduce a novel mutational load hypothesis, which also considers the collective effect of mainly rare variants, utilising the MutPred Program. We apply this new methodology to investigate the possible role of mtDNA in two cardiovascular disease (CVD) phenotypes (hypertension and hyperglycaemia), within a two-population cohort (n = 363; mean age 45 ± 9 yrs)...
December 26, 2016: Journal of Genetics and Genomics, Yi Chuan Xue Bao
https://www.readbyqxmd.com/read/28295377/time-restricted-feeding-for-prevention-and-treatment-of-cardiometabolic-disorders
#11
Girish C Melkani, Satchidananda Panda
The soaring prevalence of obesity and diabetes is associated with an increase in comorbidities, including elevated risk for cardiovascular diseases (CVD). CVDs continue to be among the leading causes of death and disability in the United States. While increased nutrition intake from an energy dense diet is known to disrupt metabolic homeostasis and contributes to the disease risk, circadian rhythm disruption is emerging as a new risk factor for CVD. Circadian rhythms coordinate cardiovascular health via temporal control of organismal metabolism and physiology...
March 10, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28292968/micu1-alleviates-diabetic-cardiomyopathy-through-mitochondrial-ca-2-dependent-antioxidant-response
#12
Lele Ji, Fengzhou Liu, Zhe Jing, Qichao Huang, Ya Zhao, Haiyan Cao, Jun Li, Chun Yin, Jinliang Xing, Fei Li
Diabetic cardiomyopathy is a major cause of mortality in diabetic patients, but specific strategies for prevention or treatment of diabetic cardiomyopathy have not been clarified yet. MICU1 is a key regulator of mitochondria Ca(2+) uptake, which plays important roles in regulating mitochondrial oxidative phosphorylation and redox balance. However, to date, the significance of MICU1 in diabetic hearts has never been investigated. Here, we demonstrated that MICU1 was downregulated in db/db mouse heart, which contributes to myocardial apoptosis in diabetes...
March 14, 2017: Diabetes
https://www.readbyqxmd.com/read/28291304/mitochondrial-dysfunction-in-calf-muscles-of-patients-with-combined-peripheral-arterial-disease-and-diabetes-type-2
#13
Brian Lindegaard Pedersen, Niels Bækgaard, Bjørn Quistorff
BACKGROUND: This study elucidate the effects on muscle mitochondrial function in patients suffering from combined peripheral arterial disease (PAD) and type 2 diabetes (T2D) and the relation to patient symptoms and treatment. METHODS: Near Infra Red Spectroscopy (NIRS) calf muscle exercise tests were conducted on Forty subjects, 15 (PAD), 15 (PAD+T2D) and 10 healthy age matched controls (CTRL) recruited from the vascular outpatient clinic at Gentofte County Hospital, Denmark...
March 14, 2017: International Angiology: a Journal of the International Union of Angiology
https://www.readbyqxmd.com/read/28290602/ajs1669-a-novel-small-molecule-muscle-glycogen-synthase-activator-improves-glucose-metabolism-and-reduces-body-fat-mass-in-mice
#14
Kazuhiro Nakano, Sen Takeshita, Noriko Kawasaki, Wataru Miyanaga, Yoriko Okamatsu, Mizuki Dohi, Tadakiyo Nakagawa
Impaired glycogen synthesis and turnover are common in insulin resistance and type 2 diabetes. As glycogen synthase (GS) is a key enzyme involved in the synthetic process, it presents a promising therapeutic target for the treatment of type 2 diabetes. In the present study, we identified a novel, potent and orally available GS activator AJS1669 {sodium 2-[[5-[[4-(4,5-difluoro-2-methylsulfanyl-phenyl)phenoxy] methyl]furan-2-carbonyl]-(2-furylmethyl)amino] acetate}. In vitro, we performed a glycogen synthase 1 (GYS1) activation assay for screening GS activators and identified that the activity of AJS1669 was further potentiated in the presence of glucose-6-phosphate (G6P)...
March 7, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28289409/mitochondrial-dna-activates-the-nlrp3-inflammasome-and-predisposes-to-type-1-diabetes-in-murine-model
#15
Daniela Carlos, Frederico R C Costa, Camila A Pereira, Fernanda A Rocha, Juliana N U Yaochite, Gabriela G Oliveira, Fernando S Carneiro, Rita C Tostes, Simone G Ramos, Dario S Zamboni, Niels O S Camara, Bernhard Ryffel, João S Silva
Although a correlation between polymorphisms of NOD-like receptor family-pyrin domain containing 3 (NLRP3) and predisposition to type 1 diabetes (T1D) has been identified, the potential function and activation of the NLRP3 inflammasome in T1D have not been clarified. The present study shows that non-obese diabetic mice exhibited increased NLRP3, and pro-IL-1β gene expression in pancreatic lymph nodes (PLNs). Similar increases in gene expression of NLRP3, apoptosis associated speck like protein (ASC) and pro-IL-1β were induced by multiple low doses of streptozotocin (STZ) in C57BL/6 mice...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28285649/pioglitazone-induced-improvements-in-insulin-sensitivity-occur-without-concomitant-changes-in-muscle-mitochondrial-function
#16
Sudip Bajpeyi, Magdalena Pasarica, Kevin E Conley, Bradley R Newcomer, Sharon A Jubrias, Cecilia Gamboa, Kori Murray, Olga Sereda, Lauren M Sparks, Steven R Smith
AIMS: Pioglitazone (Pio) is known to improve insulin sensitivity in skeletal muscle. However, the role of Pio in skeletal muscle lipid metabolism and skeletal muscle oxidative capacity is not clear. The aim of this study was to determine the effects of chronic Pio treatment on skeletal muscle mitochondrial activity in individuals with type 2 diabetes (T2D). MATERIALS AND METHODS: Twenty-four participants with T2D (13M/11F 53.38±2.1years; BMI 36.47±1.1kg/m(2)) were randomized to either a placebo (CON, n=8) or a pioglitazone (PIO, n=16) group...
April 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28285161/nanoparticle-mediated-ppar%C3%AE-gene-delivery-on-dental-implants-improves-osseointegration-via-mitochondrial-biogenesis-in-diabetes-mellitus-rat-model
#17
Young-Hee Lee, Jeong-Seok Kim, Ji-Eun Kim, Min-Ho Lee, Jae-Gyu Jeon, Il-Song Park, Ho-Keun Yi
Diabetes mellitus (DM) has a detrimental effect on osseointegration, stability and longevity of implants due to osteoporosis. In this study, PPARγ-loaded dental implants were investigated for the improvement of osseointegration and peri-implantitis. Chitosan gold nanoparticles conjugated with PPARγ cDNA were introduced on titanium mini-implant surfaces for PPARγ release to rat mandibular. DM-induced rat mandible showed structural changes such as decreased bone mass and increased inflammatory molecules, and diminution of PPARγ expression and bone formation molecules compared to normal rats...
March 8, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28285145/treatment-effects-of-cardiotrophin-1-ct-1-on-streptozotocin-induced-memory-deficits-in-mice
#18
Dongmei Wang, Xiaozhuan Liu, Yumei Liu, Guomin Shen, Xiaoying Zhu, Sanqiang Li
Increasing evidence has shown that diabetes-associated cognitive impairment is correlated with mitochondrial dysfunction and resultant synaptic injury as well as brain insulin resistance. Cardiotrophin-1 (CT-1), a regulator of energy metabolism, has been shown to exhibit impressive neuroprotective effects. In this study, we evaluated the effects of CT-1 on brain pathological features in intracerebroventrical-streptozotocin (ICV-STZ)-treated mouse model, and explored its potential mechanisms. STZ was injected twice (3mg/kg, ICV) on alternate days (day 1 and day 3) in mice...
March 8, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28283651/tfe3-regulates-whole-body-energy-metabolism-in-cooperation-with-tfeb
#19
Nunzia Pastore, Anna Vainshtein, Tiemo J Klisch, Andrea Armani, Tuong Huynh, Niculin J Herz, Elena V Polishchuk, Marco Sandri, Andrea Ballabio
TFE3 and TFEB are members of the MiT family of HLH-leucine zipper transcription factors. Recent studies demonstrated that they bind overlapping sets of promoters and are post-transcriptionally regulated through a similar mechanism. However, while Tcfeb knockout (KO) mice die during early embryonic development, no apparent phenotype was reported in Tfe3 KO mice. Thus raising the need to characterize the physiological role of TFE3 and elucidate its relationship with TFEB TFE3 deficiency resulted in altered mitochondrial morphology and function both in vitro and in vivo due to compromised mitochondrial dynamics...
March 10, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28283275/kidney-involvement-in-melas-syndrome-description-of-2-cases
#20
Pau Alcubilla-Prats, Manel Solé, Albert Botey, Josep Maria Grau, Glòria Garrabou, Esteban Poch
INTRODUCTION: MELAS syndrome -myopathy, encephalopathy, lactic acidosis and stroke-like episodes- is a maternally-inherited mitochondrial cytopathy related to several mitochondrial DNA mutations, with the A3243G mutation in tRNA(Leu) gene being the most frequent of them. PATIENTS AND METHODS: Apart from its typical symptomatology, patients usually exhibit a maternally-inherited history of neurosensory deafness and insulin-dependent type 2 diabetes mellitus (T2DM)...
March 7, 2017: Medicina Clínica
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