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https://www.readbyqxmd.com/read/28433632/role-of-microrna-130b-in-placental-pgc-1%C3%AE-tfam-mitochondrial-biogenesis-pathway
#1
Shaoning Jiang, April M Teague, Jeanie B Tryggestad, Steven D Chernausek
Diabetes during pregnancy is associated with abnormal placenta mitochondrial function and increased oxidative stress, which affect fetal development and offspring long-term health. Peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α) is a master regulator of mitochondrial biogenesis and energy metabolism. The molecular mechanisms underlying the regulation of PGC-1α in placenta in the context of diabetes remain unclear. The present study examined the role of microRNA 130b (miR-130b-3p) in regulating PGC-1α expression and oxidative stress in a placental trophoblastic cell line (BeWo)...
April 19, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28432299/tangluoning-a-traditional-chinese-medicine-attenuates-in-vivo-and-in-vitro-diabetic-peripheral-neuropathy-through-modulation-of-perk-nrf2-pathway
#2
Xinwei Yang, Weijie Yao, Haolong Liu, Yanbin Gao, Renhui Liu, Liping Xu
Prolonged hyperglycemia-induced oxidative stress and endoplasmic reticulum stress have been demonstrated to play a key role in progression of diabetic peripheral neuropathy (DPN). PERK/ Nrf2 pathway plays a predominant role in oxidative and endoplasmic reticulum (ER) stress which is associated with cell survival. This study examined the modulation of the PERK/Nrf2 pathway and apoptosis by a traditional Chinese medicine Tangluoning (TLN) in streptozotocin-induced DPN rat models and the effects of serum TLN on the PERK/Nrf2 pathway, apoptosis, intracellular reactive oxygen species and mitochondrial membrane potential in Schwann cells cultured in 150 mM glucose...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28430981/central-nervous-system-glp-1-receptors-regulate-islet-hormone-secretion-and-glucose-homeostasis-in-male-rats
#3
Lene Jessen, Eric P Smith, Yvonne Ulrich-Lai, James P Herman, Randy J Seeley, Darleen Sandoval, David D'Alessio
The glucagon-like peptide 1 (GLP-1) system plays an important role in blood glucose regulation, in great part through coordinate control of insulin and glucagon secretion. These effects are generally attributed to GLP-1 produced in peripheral sites, principally the intestine. GLP-1 is also produced in hindbrain neurons that signal through GLP-1 receptors (GLP-1r) expressed in brain regions involved in metabolic regulation. GLP-1 in the central nervous system (CNS) induces satiety, visceral illness, and stress responses...
April 18, 2017: Endocrinology
https://www.readbyqxmd.com/read/28428696/gamma-amino-butyric-acid-attenuates-brain-oxidative-damage-associated-with-insulin-alteration-in-streptozotocin-treated-rats
#4
N A Eltahawy, H N Saada, A S Hammad
The aim of the current study was to evaluate the role of γ-amino butyric acid (GABA) in insulin disturbance and hyperglycemia associated with brain oxidative damage in streptozotocin-treated rats. Streptozotocin (STZ) was administered to male albino rats as a single intraperitoneal dose (60 mg/kg body weight). GABA (200 mg/Kg body weight/day) was administered daily via gavages during 3 weeks to STZ-treated-rats. Male albino rats Sprague-Dawley (10 ± 2 weeks old; 120 ± 10 g body weight) were divided into 4 groups of 6 rats and treated in parallel...
June 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28427061/emerging-insights-into-pathogenesis
#5
Edoardo Midena, Elisabetta Pilotto
Diabetic retinopathy (DR) is a frequent complication of diabetes mellitus (DM). Persistent hyperglycemia leads to the activation of multiple cellular pathways involved in the pathogenesis of DR, resulting in increased inflammation, oxidative stress, and vascular dysfunction. DR has been considered a "chronic, low-grade inflammatory disease of the retina". However, an increasing body of evidence suggests that inflammation and neurodegeneration both occur in human diabetes even before the development of clinical signs of DR...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28424160/heterogeneous-nuclear-ribonucleoprotein-f-stimulates-sirtuin-1-gene-expression-and-attenuates-nephropathy-progression-in-diabetic-mice
#6
Chao-Sheng Lo, Yixuan Shi, Isabelle Chenier, Anindya Ghosh, Chin-Han Wu, Jean-Francois Cailhier, Jean Ethier, Jean-Baptiste Lattouf, Janos G Filep, Julie R Ingelfinger, Shao-Ling Zhang, John S D Chan
We investigated the mechanism of heterogeneous nuclear ribonucleoprotein F (hnRNP F) renoprotective action on a type 2 diabetic (T2D) (db/db) mice. Immortalized rat renal proximal tubular cells (IRPTCs) and human T2D kidneys were also studied. Db/db mice developed hyperglycemia, oxidative stress and nephropathy at age 20 weeks compared to their db/m littermates. These abnormalities, with the exception of hyperglycemia, were attenuated in db/db hnRNP F-transgenic (Tg) mice specifically overexpressing hnRNP F in their RPTCs...
April 19, 2017: Diabetes
https://www.readbyqxmd.com/read/28422962/docosahexaenoic-acid-blocks-progression-of-western-diet-induced-nonalcoholic-steatohepatitis-in-obese-ldlr-mice
#7
Kelli A Lytle, Carmen P Wong, Donald B Jump
BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is a major public health concern in western societies. Nonalcoholic steatohepatitis (NASH), the progressive form of NAFLD, is characterized by hepatic steatosis, inflammation, oxidative stress and fibrosis. NASH is a risk factor for cirrhosis and hepatocellular carcinoma. NASH is predicted to be the leading cause of liver transplants by 2020. Despite this growing public health concern, there remain no Food and Drug Administration (FDA) approved NASH treatments...
2017: PloS One
https://www.readbyqxmd.com/read/28422431/effect-of-empagliflozin-on-tacrolimus-induced-pancreas-islet-dysfunction-and-renal-injury
#8
J Jin, L Jin, K Luo, S W Lim, B H Chung, C W Yang
An inhibitor of sodium glucose co-transporter type 2 (SGLT-2) is recommended in type 2 diabetes mellitus (DM) but its use is still undetermined in Tacrolimus (TAC)-induced DM. We evaluated the effect of empagliflozin (Em) on TAC-induced pancreatic islet dysfunction and renal injury in experimental model of TAC-induced DM and in vitro. TAC induced a two-fold increase in SGLT-2 expression, while Em decreased SGLT-2 expression and further increased urinary glucose excretion compared to the TAC group. Em reduced hyperglycemia and increased plasma insulin level, pancreatic islet size and glucose-stimulated insulin secretion (GSIS) compared to the TAC group...
April 19, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28419828/hypoglycemic-and-hypolipidemic-effects-of-a-polysaccharide-from-flower-buds-of-lonicera-japonica-in-streptozotocin-induced-diabetic-rats
#9
Dongying Wang, Xiangmei Zhao, Yulan Liu
Hyperglycemia and dyslipidemia are classic features for diabetes mellitus (DM). In this study, one fraction of the crude polysaccharides extracted from Lonicera japonica flower buds (LJP) were investigated for its hypolipidaemic and hypoglycaemic activities by means of streptozotocin (STZ)-inducd diabetic rats. Interestingly, after orally administrated with 800mg/kg body weight (B.W.) LJP for 42 days, the food and water intake and the levels of sugar and insulin in blood for the diatebic rats were drastically decreased, while the contents of liver and skeletal muscle glycogen and the concentrations of hepatic pyruvate kinase and hexokinase were obviously increased (p<0...
April 15, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28419827/antihyperglycemic-antioxidant-activities-of-tucum%C3%A3-oil-astrocaryum-vulgare-in-alloxan-induced-diabetic-mice-and-identification-of-fatty-acid-profile-by-gas-chromatograph-new-natural-source-to-treat-hyperglycemia
#10
Matheus D Baldissera, Carine F Souza, Thirssa H Grando, Luciana F Cossetin, Michele R Sagrillo, Kátia Nascimento, Aleksandro S da Silva, Alencar K Machado, Ivana B M da Cruz, Lenita M Stefani, Bruna Klein, Roger Wagner, Silvia G Monteiro
The aim of the study was to investigate the effect of the oral administration of tucumã oil (Astrocaryum vulgare) on glucose and insulin levels, oxidative status, and pancreatic genotoxic parameters of alloxan-induced diabetic mice. The animals were divided into four groups (n = 6 each): control/water; control/tucumã oil; diabetic/water; diabetic/tucumã oil treated for 14 days with 5.0 mL kg(-1) via oral gavage. Gas chromatograph characterization demonstrated that oleic/elaidic fatty acid is the most abundant component present in this oil, followed by palmitic and stearic fatty acids...
April 15, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28408372/effects-of-sugar-sweetened-beverage-consumption-on-microvascular-and-macrovascular-function-in-a-healthy-population
#11
Jordan Loader, Cindy Meziat, Rani Watts, Christian Lorenzen, Dominique Sigaudo-Roussel, Simon Stewart, Cyril Reboul, Gregory Meyer, Guillaume Walther
OBJECTIVE: To assess vascular function during acute hyperglycemia induced by commercial sugar-sweetened beverage (SSB) consumption and its effect on underlying mechanisms of the nitric oxide pathway. APPROACH AND RESULTS: In a randomized, single-blind, crossover trial, 12 healthy male participants consumed 600 mL (20 oz.) of water or a commercial SSB across 2 visits. Endothelial and vascular smooth muscle functions were assessed in the microcirculation using laser speckle contrast imaging coupled with iontophoresis and in the macrocirculation using brachial artery ultrasound with flow- and nitrate-mediated dilation...
April 13, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28405811/advanced-glycation-end-products-as-a-biomarker-for-incisional-hernia
#12
J J Harlaar, H H Eker, K A Vakalopoulos, M C Cabezas, A C van der Ham, W W Vrijland, J Jeekel, J F Lange
BACKGROUND: Incisional hernia is one of the most frequent complications after abdominal surgery, with incidences up to 30%. A reliable biomarker for the prediction of this complication is lacking. Advanced glycosylation end products (AGEs), also known as non-enzymatic collagen crosslinks, are correlated with aging, smoking, hyperglycemia, hyperlipidemia and oxidative stress. In this study the accumulation of AGEs and the relation between AGEs and incisional hernia were investigated. MATERIALS AND METHODS: In an exploratory case-control study, 23 patients with incisional hernia after midline incision were compared with 17 patients without clinical or radiological signs of incisional hernia after midline incision, AGEs were measured using a Skin Auto Fluorescence (SAF)-reader...
April 12, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/28403934/a-synthetic-nitraria-alkaloid-isonitramine-protects-pancreatic-%C3%AE-cell-and-attenuates-postprandial-hyperglycemia
#13
So Jung Kwon, Su Jung Hwang, Yeonghun Jung, Hyeung-Geun Park, Mi-Hyun Kim, Yohan Park, Hyo-Jong Lee
OBJECTIVE: The extracts of Nitraria genus are composed of Nitraria alkaloids and have been used traditionally as a hypoglycemic medicine. However, the efficacy and precise mechanism of Nitraria alkaloids remain largely unknown. METHODS: Previously, we reported the total synthesis of (+)-isonitramine, one of Nitraria alkaloids. In this study, we investigated the anti-diabetic potential of isonitramine in diabetes mellitus and its underlying molecular mechanism in carbohydrate catabolism in vitro and in vivo...
May 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28403789/metaflammation-tissue-specific-alterations-of-the-nlrp3-inflammasome-platform
#14
Raffaella Mastrocola, Manuela Aragno, Giuseppe Alloatti, Massimo Collino, Claudia Penna, Pasquale Pagliaro
In the last decades, the extension of life expectancy and the increased consumption of foods rich in saturated fats and added sugars have exposed the general population to emerging health problems. The prevalence of metabolic syndrome (MS), composed of a cluster of factors as obesity, dyslipidemia, hyperglycemia, and hypertension, is rapidly increasing in industrialized and developing countries leading to precocious onset of age-related diseases. Indeed, oxidative stress, accumulation of advanced glycation endproducts, and a chronic low-grade inflammation are common features of MS and physiological ageing...
April 7, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28403066/non-hemodynamic-effects-of-catecholamines
#15
Clair Hartmann, Peter Radermacher, Martin Wepler, Benedikt Nubaum
Circulatory shock is defined as an imbalance between tissue oxygen supply and demand, and mostly results from a loss of blood volume, cardiac pump failure and/or reduction of vasomotor tone. The clinical hallmarks of circulatory shock are arterial hypotension and lactate acidosis. Since the degree and duration of hypotension are major determinants of outcome, vasopressor administration represents a cornerstone therapy to treat these patients. Current guidelines recommend the use of catecholamines as the drug of first choice...
April 11, 2017: Shock
https://www.readbyqxmd.com/read/28402540/the-hepatic-protection-effects-of-hepassocin-in-hyperglycemic-crisis
#16
Horng-Yih Ou, Hung-Tsung Wu, Ching-Han Lin, Ye-Fong Du, Che-Yuan Hu, Hao-Chang Hung, Pansee Wu, Hung-Yuan Li, Shu-Huei Wang, Chih-Jen Chang
CONTEXT: High glucose generates reactive oxygen species (ROS) and contributes to glucotoxicity in hepatocytes, and hyperglycemia causes structural and functional damage to the liver. However, only a mild hepatic dysfunction was observed in subjects with hyperglycemic crisis, implying a factor exists to exert a hepatic protective effect. Hepassocin is a hepatokine that modulates the proliferation and metabolism of hepatocytes, and also exerts protective activity in liver injury. However, its role in hyperglycemic crisis-induced hepatic dysfunction remains unknown...
April 11, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28400286/increased-oxidative-stress-and-cytokinesis-block-micronucleus-cytome-assay-parameters-in-pregnant-women-with-gestational-diabetes-mellitus-and-gestational-arterial-hypertension
#17
Mina Toljic, Amira Egic, Jelena Munjas, Natasa Karadzov Orlic, Zagorka Milovanovic, Aleksandra Radenkovic, Jovana Vuceljic, Ivana Joksic
We investigated whether gestational diabetes mellitus (GDM) and gestational arterial hypertension (GH) are associated with increased oxidative stress and DNA damage. Study included 3 groups of pregnant women (GDM, GH and control). DNA damage biomarkers (micronuclei MNi, nucleoplasmic bridges NPBs and nuclear buds NBUDs) were assessed by cytokinesis-block micronucleus cytome assay. Oxidative stress levels were evaluated by analyzing malondialdehyde equivalents (TBARS) and 8-hydroxy-2'-deoxyguanosine (8-OHdG)...
April 8, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28397090/tributyltin-in-male-mice-disrupts-glucose-homeostasis-as-well-as-recovery-after-exposure-mechanism-analysis
#18
Bingshui Li, Jiaojiao Guo, Zhihui Xi, Jing Xu, Zhenghong Zuo, Chonggang Wang
Organotin compounds such as tributyltin (TBT) and triphenyltin can induce diabetes and insulin resistance. However, the development of diabetes caused by organotins and its underlying mechanisms remain unclear. In the present study, male KM mice were orally administered with TBT (0.5, 5, and 50 μg/kg) once every 3 days for 45 days. Their body weights increased and reached a significant difference compared to the control, and the fasting blood glucose levels were significantly elevated. The fasting levels of serum insulin and adiponectin increased, while glucagon levels decreased in the animals treated with TBT...
April 10, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28396714/cinnamon-polyphenol-extract-inhibits-hyperlipidemia-and-inflammation-by-modulation-of-transcription-factors-in-high-fat-diet-fed-rats
#19
Zeynep Tuzcu, Cemal Orhan, Nurhan Sahin, Vijaya Juturu, Kazim Sahin
We evaluated the effects of cinnamon polyphenol extract on hepatic transcription factors expressions including SREBP-1c and LXR-α in rats fed high fat diet (HFD). Twenty-eight Wistar rats were allocated into four groups: (i) normal control: animals fed with normal chow; (ii) cinnamon: animals supplemented with cinnamon polyphenol; (iii) HFD: animals fed a high-fat diet; and (iv) HFD + cinnamon: animals fed a high-fat diet and treated with cinnamon polyphenol. Obesity was linked to hyperglycemia, hyperlipidemia, and oxidative stress as imitated by elevated serum glucose, lipid profile, and serum and liver malondialdehyde (MDA) concentrations...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28396699/can-the-onset-of-heart-failure-be-delayed-by-treating-diabetic-cardiomyopathy
#20
REVIEW
Anna Marcinkiewicz, Stanisław Ostrowski, Józef Drzewoski
The pathophysiology of diabetic cardiomyopathy (DC) is not fully understood. This frequently undiagnosed complication of chronic hyperglycemia leads to heart failure (HF). However, it is suggested that an appropriate metabolic control of diabetes at an early stage of this deleterious disease, is able to inhibit the development and progression of DC to HF. Recently, it has been postulated that myocardial ischaemia plays an important role in the development of this pathology. Results of the antianginal pharmacological treatment and revascularization are unsatisfactory and reveal a gap in our knowledge and current approaches to treating DC...
2017: Diabetology & Metabolic Syndrome
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