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https://www.readbyqxmd.com/read/29145148/honokiol-protects-pancreatic-%C3%AE-cell-against-high-glucose-and-intermittent-hypoxia-induced-injury-by-activating-nrf2-are-pathway-in-vitro-and-in-vivo
#1
Chen-Guang Li, Chang-Lin Ni, Min Yang, Yun-Zhao Tang, Zhu Li, Yan-Juan Zhu, Zhen-Huan Jiang, Bei Sun, Chun-Jun Li
Obstructive sleep apnea hypopnea syndrome (OSAHS) is associated with glucose intolerance, insulin resistance and type 2 diabetes mellitus (T2DM). Although several studies have revealed that intermittent hypoxia (IH) in OSAHS may further aggravate pancreatic β cell damage and promote the evolution of type 2 diabetes (T2DM) by increasing oxidative stress, the underlying mechanisms are unclear. Honokiol, a potent radical scavenger, has been demonstrated to ameliorate oxidative stress in many cases. The present study aimed to explore the potential mechanism of IH and diabetes synergistically damage and destruct the pancreatic β cell, examine the effects of honokiol on ameliorating pancreatic β cell injury in this context and explore the mechanism of such effects...
November 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29143180/oxidative-stress-in-adult-growth-hormone-deficiency-different-plasma-antioxidant-patterns-in-comparison-with-metabolic-syndrome
#2
Antonio Mancini, Chantal Di Segni, Carmine Bruno, Giulio Olivieri, Francesco Guidi, Andrea Silvestrini, Elisabetta Meucci, Patrick Orlando, Sonia Silvestri, Luca Tiano, Alfredo Pontecorvi
BACKGROUND AND AIMS: Growth hormone deficiency (GHD) is a condition associated with increased cardiovascular risk and insulin-resistance. Oxidative stress (OS) could be a mechanism underlying both these phenomena. In order to investigate plasma antioxidant defenses in such condition, we evaluated adults with GHD, compared with controls and metabolic syndrome patients (MetS), studying plasma total antioxidant capacity (TAC) and coenzyme Q10 (CoQ10, lipophilic antioxidant) levels, both in its oxidized and reduced forms, correlating this data with metabolic and hormonal pattern...
November 15, 2017: Endocrine
https://www.readbyqxmd.com/read/29141573/liver-protective-effects-of-extra-virgin-olive-oil-interaction-between-its-chemical-composition-and-the-cell-signaling-pathways-involved-in-protection
#3
Sandra A Soto-Alarcon, Rodrigo Valenzuela, Alfonso Valenzuela, Luis A Videla
BACKGROUND AND OBJECTIVE: The liver is an organ susceptible to a multitude of injuries that causes liver damage, like steatosis, non-alcoholic steatohepatitis, cirrhosis, hepatocellular carcinoma, and ischemia-reperfusion injury. Extra virgin olive oil (EVOO), presents several protective effects on the liver, reducing hepatic steatosis, hepatocyte ballooning, fibrogenesis, preventing lipid peroxidation, among other effects. Due to its high levels of monounsaturated fatty acids, mainly oleic acid and phenolic compounds, such as hydroxytyrosol and oleuropein, EVOO is able to participate in the activation of different signaling pathways in the hepatocytes involved in the prevention of inflammation, oxidative stress, endoplasmic reticulum stress, mitochondrial dysfunction, and insulin resistance, allowing the prevention or resolution of liver damage...
November 14, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/29139042/obesity-and-altered-aspirin-pharmacology
#4
REVIEW
Nicholas B Norgard
Obesity is an independent risk factor for cardiovascular morbidity and mortality due to atherothrombotic events and represents a group of patients who are in need of optimized antithrombotic therapy. Central to the obesity-related risk of atherothrombosis is a pro-thrombotic state characterized by increased levels of coagulation factors, impaired fibrinolysis, and platelet hyper-reactivity, which results from the interaction among the features clustering in obesity: insulin resistance, inflammation, oxidative stress, and endothelial dysfunction...
November 14, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/29138799/lychee-seed-extract-protects-against-neuronal-injury-and-improves-cognitive-function-in-rats-with-type-ii-diabetes-mellitus-with-cognitive-impairment
#5
Yong Tang, Chonglin Yu, Jianming Wu, Haixia Chen, Yuan Zeng, Xiuling Wang, Le Yang, Qibing Mei, Shousong Cao, Dalian Qin
Lychee seed is a traditional Chinese medicine and has many beneficial effects such as modulation of blood sugar and lipids, antioxidation, antivirus and antitumor. Studies have indicated that type II diabetes mellitus (T2DM) and Alzheimer's disease (AD) share common biological mechanisms including insulin resistance, impaired glucose metabolism, β‑amyloid (Aβ) formation, oxidative stress and presence of advanced glycation end products (AGEs). The present study investigated the effects of lychee seed extract (LSE) on neuroprotection, cognitive function improvement and possible underlying mechanisms in a rat model of T2DM with cognitive impairment...
November 9, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29138180/inhibition-of-vascular-c-jun-n-terminal-kinase-2-improves-obesity-induced-endothelial-dysfunction-after-roux-en-y-gastric-bypass
#6
Petia Doytcheva, Thomas Bächler, Erika Tarasco, Vincenzo Marzolla, Michael Engeli, Giovanni Pellegrini, Simona Stivala, Lucia Rohrer, Francesco Tona, Giovanni G Camici, Paul M Vanhoutte, Christian M Matter, Thomas A Lutz, Thomas F Lüscher, Elena Osto
BACKGROUND: Roux-en-Y gastric bypass (RYGB) reduces obesity-associated comorbidities and cardiovascular mortality. RYGB improves endothelial dysfunction, reducing c-Jun N-terminal kinase (JNK) vascular phosphorylation. JNK activation links obesity with insulin resistance and endothelial dysfunction. Herein, we examined whether JNK1 or JNK2 mediates obesity-induced endothelial dysfunction and if pharmacological JNK inhibition can mimic RYGB vascular benefits. METHODS AND RESULTS: After 7 weeks of a high-fat high-cholesterol diet, obese rats underwent RYGB or sham surgery; sham-operated ad libitum-fed rats received, for 8 days, either the control peptide D-TAT or the JNK peptide inhibitor D-JNKi-1 (20 mg/kg per day subcutaneous)...
November 14, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29136166/diabetes-induced-hyperglycemia-impairs-male-reproductive-function-a-systematic-review
#7
Constanze C Maresch, Dina C Stute, Marco G Alves, Pedro F Oliveira, David M de Kretser, Thomas Linn
BACKGROUND: Hyperglycemia can result from a loss of pancreatic beta-cells or a decline in their function leading to decreased insulin secretion or may arise from insulin resistance and variable degrees of inadequate insulin secretion resulting in diabetes and related comorbidities. To date several reviews have addressed the issue of diabetes-related male infertility but most have focused on how metabolic syndrome causes the decline in male fertility. However, a comprehensive overview as to how diabetes-induced hyperglycemia impairs male fertility is missing...
November 10, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/29134977/metformin-effects-are-augmented-by-chronic-intermittent-cold-stress-in-high-fat-diet-fed-male-wistar-rats
#8
A O Ige, O I Iwaloye, E O Adewoye
This study investigated the effects of metformin on some glucose regulatory indices in high fat diet (HFD) fedmale Wistar rats exposed to room temperature and chronic intermittent cold stress (CICS). Thirty rats were randomly dividedinto 5 groups. Group 1(control) was maintained on standard rat chow while groups 2-5 were maintained on HFD for 8weeksrespectively prior to experimental procedures. Control, group 2(HFD untreated) and group 3(HFD+metformin (250mg/kg)were exposed to room temperature while groups 4(HFD untreated+CICS) and 5(HFD+CICS+metformin) were exposed toCICS for 21days...
June 30, 2017: Nigerian Journal of Physiological Sciences: Official Publication of the Physiological Society of Nigeria
https://www.readbyqxmd.com/read/29130725/-eighth-jes%C3%A3%C2%BAs-culebras-lecture-critical-care-nutrition-and-hyperglycemia-a-close-relationship
#9
Alfonso Mesejo
Critically ill patients show a metabolic response to injury that affects carbohydrate metabolism, causing hyperglycemia and an increase in glycemic variability that makes the critically ill patient susceptible to infection, resulting in morbidity and mortality increase. Also, severe hypoglycemia was detected as a consequence of intensive insulin treatment that provokes deleterious effects in their clinical evolution, so a correct monitoring of plasma glucose would contribute to reduce morbidity and mortality...
October 24, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29129772/glycyrrhizin-ameliorates-high-fat-diet-induced-obesity-in-rats-by-activating-nrf2-pathway
#10
Nada F Abo El-Magd, Mohamed El-Mesery, Amro El-Karef, Mamdouh M El-Shishtawy
AIM: Obesity based on insulin resistance is a state of chronic oxidative stress and inflammation that are highly regulated through nuclear factor Erythroid 2-related factor 2 (NrF2) pathway. MATERIALS AND METHODS: 70 male Wistar rats were randomized into two models. The prophylactic model was 10weeks and rats were grouped into: normal group, GL group (received glycyrrhizin 50mg/kg/day orally along with normal pellet diet), HFD group and HFD+ GL group (received glycyrrhizin along with HFD)...
November 9, 2017: Life Sciences
https://www.readbyqxmd.com/read/29129611/effect-of-sleep-curtailment-on-dietary-behavior-and-physical-activity-a-randomized-crossover-trial
#11
Eri Tajiri, Eiichi Yoshimura, Yoichi Hatamoto, Hiroaki Tanaka, Seiya Shimoda
Our objective was to clarify the effect of sleep curtailment on energy intake (EI) and physical activity under free-living conditions. Participants were 16 healthy women aged 21-22years. A randomized crossover trial design was used to compare a short sleep condition (SS): 4h/night (2:00-6:00) and a control sleep condition (CS): 7h/night (23:00-6:00). Each condition comprised 3 consecutive nights. Sleep duration was assessed using a wristwatch-type accelerometer at home. All living activities except sleeping were free-living...
November 9, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/29129455/plasma-palmitoyl-carnitine-ac16-0-is-a-marker-of-increased-postprandial-nonesterified-incomplete-fatty-acid-oxidation-rate-in-individuals-with-type-2-diabetes
#12
Fatima-Zahra Bouchouirab, Mélanie Fortin, Christophe Noll, Jean Dubé, André C Carpentier
OBJECTIVES: Enhanced mitochondrial fatty acid utilization is known to increase radical oxidative stress and induce insulin resistance. An increased level of plasma acylcarnitine (AC) has been proposed to indicate mitochondrial energy substrate overload, a possible mechanism leading to insulin resistance. The aim of our study was to determine fasting and postprandial plasma acetyl-carnitine (AC2:0), palmitoyl-carnitine (AC16:0), oleoyl-carnitine (AC18:1) and linoleoyl-carnitine (AC18:2) levels and their relationships with plasma nonesterified fatty acid appearance and oxidation rates and insulin sensitivity in participants with type 2 diabetes and normoglycemic offspring of 2 parents with type 2 diabetes (FH+) compared to healthy participants without family histories of type 2 diabetes (FH-)...
November 9, 2017: Canadian Journal of Diabetes
https://www.readbyqxmd.com/read/29127192/lipotoxic-very-long-chain-ceramides-cause-mitochondrial-dysfunction-oxidative-stress-and-cell-death-in-cardiomyocytes
#13
Brittany A Law, Xianghai Liao, Kelsey S Moore, Abigail Southard, Patrick Roddy, Ruiping Ji, Zdzislaw Sculz, Ala Bielawska, P Christian Schulze, L Ashley Cowart
Accumulating data support a role for bioactive lipids as mediators of lipotixicity in cardiomyocytes. One class of these, the ceramides, constitutes a family of molecules that differ in structure and are synthesized by distinct enzymes, ceramide synthase (CerS)1-CerS6. Data support that specific ceramides and the enzymes that catalyze their formation play distinct roles in cell function. In a mouse model of diabetic cardiomyopathy, sphingolipid profiling revealed increases in not only the CerS5-derived ceramides but also in very long chain (VLC) ceramides derived from CerS2...
November 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29123172/transcriptomic-and-epigenetic-responses-to-short-term-nutrient-exercise-stress-in-humans
#14
R C Laker, C Garde, D M Camera, W J Smiles, J R Zierath, J A Hawley, R Barrès
High fat feeding impairs skeletal muscle metabolic flexibility and induces insulin resistance, whereas exercise training exerts positive effects on substrate handling and improves insulin sensitivity. To identify the genomic mechanisms by which exercise ameliorates some of the deleterious effects of high fat feeding, we investigated the transcriptional and epigenetic response of human skeletal muscle to 9 days of a high-fat diet (HFD) alone (Sed-HFD) or in combination with resistance exercise (Ex-HFD), using genome-wide profiling of gene expression and DNA methylation...
November 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29121094/pleckstrin-homology-like-domain-family-a-member-3-phlda3-deficiency-improves-islets-engraftment-through-the-suppression-of-hypoxic-damage
#15
Naoaki Sakata, Yohko Yamaguchi, Yu Chen, Masayuki Shimoda, Gumpei Yoshimatsu, Michiaki Unno, Shoichiro Sumi, Rieko Ohki
Islet transplantation is a useful cell replacement therapy that can restore the glycometabolic function of severe diabetic patients. It is known that many transplanted islets failed to engraft, and thus, new approaches for overcoming graft loss that may improve the outcome of future clinical islet transplantations are necessary. Pleckstrin homology-like domain family A, member 3 (PHLDA3) is a known suppressor of neuroendocrine tumorigenicity, yet deficiency of this gene increases islet proliferation, prevents islet apoptosis, and improves their insulin-releasing function without causing tumors...
2017: PloS One
https://www.readbyqxmd.com/read/29115422/melatonin-ameliorates-myocardial-apoptosis-by-suppressing-endoplasmic-reticulum-stress-in-rats-with-long%C3%A2-term-diabetic-cardiomyopathy
#16
Fang-Yuan Xiong, Song-Tao Tang, Huan Su, Hai-Qin Tang, Pin Jiang, Qing Zhou, Yuan Wang, Hua-Qing Zhu
The effects of melatonin (MLT), which exerts cardioprotective effects against myocardial apoptosis, in long‑term diabetic cardiomyopathy are not currently well defined. The present study aimed to investigate how MLT protects the heart through modulating myocardial apoptosis in rats with type 2 diabetes mellitus (DM). In total, 36 rats were randomly divided into three groups, including control (n=12), DM (n=12) and DM + MLT (n=12) groups. The results demonstrated that, in DM rats, a significant increase was observed in the serum fasting blood glucose and lipid levels, in addition to insulin resistance and cardiac dysfunction, which were attenuated in DM rats treated with MLT...
October 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29114876/translating-carotid-body-function-into-clinical-medicine
#17
Rodrigo Iturriaga
The carotid body (CB) is considered the main O2 chemoreceptor, which contributes to the cardiorespiratory homeostasis and ventilatory acclimatization. In clinical medicine, the most common pathology associated with the CB are tumours. However, a growing body of evidences supports the novel idea that an enhanced CB chemosensory discharge contributes to the autonomic dysfunction and pathological consequences in obstructive sleep apnoea (OSA), hypertension, systolic heart failure (HF) and cardiometabolic diseases...
November 8, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/29113994/hepatocyte-specific-deletion-of-bap31-promotes-srebp1c-activation-promotes-hepatic-lipid-accumulation-and-worsens-insulin-resistance-in-mice
#18
Jia-Lin Xu, Li-Ya Li, Yan-Qing Wang, Ya-Qi Li, Mu Shan, Shi-Zhuo Sun, Yang Yu, Bing Wang
Conditional knockout mice with targeted disruption of BAP31 in adult mouse liver were generated and challenged with a high-fat diet (HFD) for 36 or 96 days, markers of obesity, diabetes, and hepatic steatosis were determined. Mutant mice were indistinguishable from wild-type littermates, but exhibited increased HFD-induced obesity. BAP31-deletion in hepatocytes increased the expression of SREBP1C and the target genes, including ACC1 and SCD1, increased hepatic lipid accumulation and HFD-induced liver steatosis...
November 7, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/29113464/a-new-treatment-strategy-for-parkinson-s-disease-through-the-gut-brain-axis-the-glucagon-like-peptide-1-receptor-pathway
#19
Dong Seok Kim, Ho-Il Choi, Yun Wang, Yu Luo, Barry J Hoffer, Nigel H Greig
Molecular communications in the gut-brain axis, between the central nervous system and the gastrointestinal tract, are critical for maintaining healthy brain function, particularly in aging. Epidemiological analyses indicate type 2 diabetes mellitus (T2DM) is a risk factor for neurodegenerative disorders including Alzheimer's disease (AD) and Parkinson's diseases (PD) for which aging shows a major correlative association. Common pathophysiological features exist between T2DM, AD, and PD, including oxidative stress, inflammation, insulin resistance, abnormal protein processing, and cognitive decline, and suggest that effective drugs for T2DM that positively impact the gut-brain axis could provide an effective treatment option for neurodegenerative diseases...
September 2017: Cell Transplantation
https://www.readbyqxmd.com/read/29111905/the-effects-of-coenzyme-q10-supplementation-on-glucose-metabolism-lipid-profiles-inflammation-and-oxidative-stress-in-patients-with-diabetic-nephropathy-a-randomized-double-blind-placebo-controlled-trial
#20
Tahereh Gholnari, Esmat Aghadavod, Alireza Soleimani, Gholam Ali Hamidi, Nasrin Sharifi, Zatollah Asemi
OBJECTIVE: Data on the effects of coenzyme Q10 (CoQ10) supplementation on glucose metabolism, lipid profiles, inflammation, and oxidative stress in subjects with diabetic nephropathy (DN) are scarce. This research was done to determine the effects of CoQ10 supplementation on metabolic status in subjects with DN. METHODS: This randomized double-blind placebo-controlled clinical trial was done in 50 subjects with DN. Participants were randomly assigned into two groups to intake either 100 mg/day CoQ10 supplements (n = 25) or placebo (n = 25) for 12 weeks...
November 7, 2017: Journal of the American College of Nutrition
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