scholarly journals Decreased Skin-Mediated Detoxification Contributes to Oxidative Stress and Insulin Resistance

2012 ◽  
Vol 2012 ◽  
pp. 1-9
Author(s):  
Xing-Xing Liu ◽  
Chang-Bin Sun ◽  
Ting-Tong Yang ◽  
Da Li ◽  
Chun-Yan Li ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Insulin Resistance ◽  
Toxic Substances ◽  
Insulin Levels ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Glucose Injection ◽  
Plasma Insulin Levels ◽  
Induced Changes ◽  
The Relationship

The skin, the body's largest organ, plays an important role in the biotransformation/detoxification and elimination of xenobiotics and endogenous toxic substances, but its role in oxidative stress and insulin resistance is unclear. We investigated the relationship between skin detoxification and oxidative stress/insulin resistance by examining burn-induced changes in nicotinamide degradation. Rats were divided into four groups: sham-operated, sham-nicotinamide, burn, and burn-nicotinamide. Rats received an intraperitoneal glucose injection (2 g/kg) with (sham-nicotinamide and burn-nicotinamide groups) or without (sham-operated and burn groups) coadministration of nicotinamide (100 mg/kg). The results showed that the mRNA of all detoxification-related enzymes tested was detected in sham-operated skin but not in burned skin. The clearance of nicotinamide andN1-methylnicotinamide in burned rats was significantly decreased compared with that in sham-operated rats. After glucose loading, burn group showed significantly higher plasma insulin levels with a lower muscle glycogen level than that of sham-operated and sham-nicotinamide groups, although there were no significant differences in blood glucose levels over time between groups. More profound changes in plasma H2O2and insulin levels were observed in burn-nicotinamide group. It may be concluded that decreased skin detoxification may increase the risk for oxidative stress and insulin resistance.

scholarly journals Increased basal level of Akt-dependent insulin signaling may be responsible for the development of insulin resistance

2009 ◽  
Vol 297 (4) ◽  
pp. E898-E906 ◽  
Author(s):  
Hui-Yu Liu ◽  
Tao Hong ◽  
Ge-Bo Wen ◽  
Jianmin Han ◽  
Degen Zuo ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Insulin Resistance ◽  
Insulin Sensitivity ◽  
Insulin Signaling ◽  
Kinase Inhibitor ◽  
Phosphatidylinositol 3 Kinase ◽  
Akt Phosphorylation ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Triglyceride Content

A majority of subjects with insulin resistance and hyperinsulinemia can maintain their blood glucose levels normal for the whole life presumably through protein kinase B (Akt)-dependent insulin signaling. In this study, we found that the basal Akt phosphorylation level was increased in liver and gastrocnemius of mice under the high-fat diet (HFD). Levels of mitochondrial DNA and expression of some mitochondrion-associated genes were decreased by the HFD primarily in liver. Triglyceride content was increased in both liver and gastrocnemius by the HFD. Oxidative stress was induced by the HFD in both liver and gastrocnemius. Insulin sensitivity was decreased by the HFD. All of these changes were largely or completely reversed by treatment of animals with the phosphatidylinositol 3-kinase inhibitor LY-294002 during the time when animals usually do not eat. Consequently, the overall insulin sensitivity was increased by treatment with LY-294002. Together, our results indicate that increased basal Akt-dependent insulin signaling suppresses mitochondrial production, increases ectopic fat accumulation, induces oxidative stress, and desensitizes insulin signaling in subjects with insulin resistance and hyperinsulinemia.

scholarly journals The Neutrophil-Lymphocyte Ratio and its Relationship with Insulin Resistance in Obesity

2019 ◽  
Author(s):  
SERDAR KARAKAYA ◽  
MUSTAFA ALTAY ◽  
FATMA KAPLAN EFE ◽  
İBRAHİM KARADAĞ ◽  
OKTAY ÜNSAL ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Model Assessment ◽  
Obese Patients ◽  
Positive Correlation ◽  
Neutrophil Lymphocyte Ratio ◽  
Lymphocyte Ratio ◽  
Insulin Levels ◽  
Glucose Levels ◽  
Key Words Neutrophil ◽  
The Relationship

Background and aim: In this study, we aimed to investigate the neutrophil/lymphocyte (N/L) ratio, variations in leukocytes and leukocyte subtypes, and the relationship between N/L ratio and insulin resistance (IR) in obesity. Materials and Methods: Ninety six patients and 40 healthy controls were included in this study. Patients’ blood glucose levels, insulin levels, and hemogram parameters upon 8 hours of fasting were determined. Body mass index (BMI) and homeostasis model assessment insulin resistance (HOMA-IR) values were calculated. Results: Neutrophil numbers were found to be higher among IR obese patients than among non-IR obese patients. The N/L ratio was, moreover, found to be higher among IR obese patients, when compared to non IR obese. A positive correlation was found between insulin resistance and both neutrophil and WBC counts. Another positive correlation was also found between insulin levels and the N/L ratio, WBC, and neutrophil counts. Discussion: In our study, leukocyte numbers and subtypes were determined to be higher among obese individuals than among healthy individuals. The N/L ratio had increased significantly only among obese patients who have insulin resistance. Further studies are needed in order to better demonstrate the relationship between the N/L ratio and insulin resistance/inflammation. Key Words: Neutrophil-Lymphocyte Ratio, Obesity, Insulin Resistance

Fructose-6-phosphate substrate cycling and glucose and insulin regulation of gluconeogenesis in vivo.

1979 ◽  
Vol 236 (4) ◽  
pp. E410
Author(s):  
A Dunn ◽  
M Chenoweth
Keyword(s):  
Plasma Glucose ◽  
Hepatic Glucose Production ◽  
Glucose Production ◽  
High Plasma ◽  
Synthetase Activity ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Plasma Insulin Levels ◽  
Induced Changes

The question whether glucose or insulin regulates gluconeogenesis by effecting changes in the fructose-6-phosphate (F-6-P) substrate cycle (phosphofructokinase (PFK), fructose-1,6-diphosphatase (FDPase)) was investigated in vivo in fasted normal rats using [3-3H,U-14C]- or [3-3H,6-14C]glucose. The plasma glucose 3H/14C ratio was used as an index of substrate cycling because 3H loss from the liver hexose phosphate pool is limited by the activities of PFK and FDPase during gluconeogenesis and glycolysis, respectively. The 3H/14C ratio was corrected where necessary for glucose or insulin-induced changes in reincorporation of 14C from C-6 to C-1-3 of plasma glucose. A glucose infusion producing hyperglycemia and insulinemia was accompanied by decreased hepatic glucose production and diminished F-6-P substrate cycling, i.e., decreased FDPase activity. When insulin was infused along with glucose to produce high plasma insulin levels and avoid hypo- or hyperglycemia, the 3H/14C decay rate did not change, suggesting that the hormone does not influence basal rates of gluconeogenesis or PFK or FDPase activities. These in vivo results suggest that increased blood glucose levels inhibit gluconeogenesis and depress F-6-P substrate cycling. Whether these cycle changes constitute primary regulatory actions of glucose or occur secondarily to other metabolic events resulting from excess hexose (e.g., increased glycogen synthetase activity) cannot now be concluded.

scholarly journals Pengaruh yogurt sinbiotik pisang terhadap kadar glukosa dan insulin tikus sindrom metabolik

2017 ◽  
Vol 14 (1) ◽  
pp. 10 ◽  
Author(s):  
Fiqhi Cahyaningrum Rahmawati ◽  
Kis Djamiatun ◽  
Nyoman Suci
Keyword(s):  
Insulin Resistance ◽  
Metabolic Syndrome ◽  
Blood Glucose ◽  
Treatment Group ◽  
Standard Diet ◽  
Insulin Levels ◽  
Glucose Levels ◽  
The Metabolic Syndrome ◽  
Blood Glucose Levels ◽  
Reduce Blood Glucose

Background: The metabolic syndrome often begins with insulin resistance characterized by hyperinsulinemia and hyperglycemia. Synbiotic yoghurt tanduk banana contains probiotic and prebiotic FOS can improve insulin resistance in metabolic syndrome.Objective: To prove the effect of synbiotic yoghurt tanduk banana can reduce blood glucose levels and insulin levels in metabolic syndrome rats.Method: True-experimental study with randomized controlled group pre-post test design in male wistar rats. Eighteen samples were induced to become metabolic syndrome with high fat fructose diet for 2 weeks and they were divided into 3 groups: control (K) was given standard diet, treatment group 1 (P1), and treatment group 2 (P2) were given sinbiotic yoghurt tanduk banana dose of 0.009 ml/g body weight (BW)/day and 0.018 ml/g BW/day for 2 weeks.Results: The paired t-test showed there were differences of blood glucose levels and insulin levels before and after treatment in P2 group. The Kruskal Wallis test showed there were differences of mean blood glucose levels inter group after treatment (p<0.05). The One-way Anova test showed there were differences of mean insulin levels inter group after treatment (p<0.05). Conclusion: Synbiotic yoghurt tanduk banana can reduce blood glucose levels and insulin levels in metabolic syndrome rat with effective dose is 0.018 ml/grBW/day.

scholarly journals Intraperitoneal insulin administration in pigs: effect on circulating insulin and glucose levels

2021 ◽  
Vol 9 (1) ◽  
pp. e001929
Author(s):  
Ilze Dirnena-Fusini ◽  
Marte Kierulf Åm ◽  
Anders Lyngvi Fougner ◽  
Sven Magnus Carlsen ◽  
Sverre Christian Christiansen
Keyword(s):  
Systemic Circulation ◽  
Subcutaneous Insulin ◽  
Insulin Levels ◽  
Glucose Levels ◽  
Endogenous Insulin ◽  
Blood Glucose Levels ◽  
Intraperitoneal Insulin ◽  
A Minor ◽  
Design And Methods ◽  
Mean Blood Glucose

IntroductionThe effect of intraperitoneal insulin infusion has limited evidence in the literature. Therefore, the aim of the study was to investigate the pharmacokinetics and pharmacodynamics of different intraperitoneal insulin boluses. There is a lack of studies comparing the insulin appearance in the systemic circulation after intraperitoneal compared with subcutaneous insulin delivery. Thus, we also aimed for a comparison with the subcutaneous route.Research design and methodsEight anesthetized, non-diabetic pigs were given three different intraperitoneal insulin boluses (2, 5 and 10 U). The order of boluses for the last six pigs was randomized. Endogenous insulin and glucagon release were suppressed by repeated somatostatin analog injections. The first pig was used to identify the infusion rate of glucose to maintain stable glucose values throughout the experiment. The estimated difference between insulin boluses was compared using two-way analysis of variance (GraphPad Prism V.8).In addition, a trial of three pigs which received subcutaneous insulin boluses was included for comparison with intraperitoneal insulin boluses.ResultsDecreased mean blood glucose levels were observed after 5 and 10 U intraperitoneal insulin boluses compared with the 2 U boluses. No changes in circulating insulin levels were observed after the 2 and 5 U intraperitoneal boluses, while increased circulating insulin levels were observed after the 10 U intraperitoneal boluses. Subcutaneously injected insulin resulted in higher values of circulating insulin compared with the corresponding intraperitoneal boluses.ConclusionsSmaller intraperitoneal boluses of insulin have an effect on circulating glucose levels without increasing insulin levels in the systemic circulation. By increasing the insulin bolus, a major increase in circulating insulin was observed, with a minor additive effect on circulating glucose levels. This is compatible with a close to 100% first-pass effect in the liver after smaller intraperitoneal boluses. Subcutaneous insulin boluses markedly increased circulating insulin levels.

scholarly journals Self-Care IoT Platform for Diabetic Mellitus

2021 ◽  
Vol 11 (5) ◽  
pp. 2006
Author(s):  
Jai-Chang Park ◽  
Seongbeom Kim ◽  
Je-Hoon Lee
Keyword(s):  
Blood Glucose ◽  
Self Care ◽  
Target Range ◽  
Process Data ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Iot Platform ◽  
Number Of Patients ◽  
Glucose Management ◽  
The Relationship

Diabetes mellitus is a severe chronic disease, and the number of patients has increased. To manage blood glucose levels, patients should frequently measure their blood glucose and analyze which lifestyle habits affect blood glucose levels. However, it is hard to record and analyze the relationship between their blood glucose levels and lifestyle. The internet of things (IoT) is useful to interconnect, monitor, obtain, and process data between various devices used in everyday life to fulfill a common objective. This paper proposes an intelligent self-care platform using IoT technology that helps patients with chronic diabetes manage their blood glucose levels in their target range. In particular, we developed various devices called the self-care IoT pack. It consists of five different types of devices to obtain blood glucose levels, physical activities, food intake, medication, sleeping, and so on. They can collect blood glucose levels with lifestyles that automatically impact the patient’s blood glucose level. We also devised a self-care application to display and analyze the data obtained from the IoT pack. Consequently, the proposed self-care IoT platform collects the blood glucose levels and the lifestyles without any burden of record. By reviewing the accumulated information, the patients can find bad habits in blood glucose management and improve their lifestyle.

scholarly journals Effects of Apocynin on Heart Muscle Oxidative Stress of Rats with Experimental Diabetes: Implications for Mitochondria

Antioxidants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 335
Author(s):  
Estefanía Bravo-Sánchez ◽  
Donovan Peña-Montes ◽  
Sarai Sánchez-Duarte ◽  
Alfredo Saavedra-Molina ◽  
Elizabeth Sánchez-Duarte ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Insulin Sensitivity ◽  
Cardiac Tissue ◽  
Diabetic Rats ◽  
Oxidase Inhibitor ◽  
Beneficial Effects ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Transport Chain ◽  
Male Wistar Rats

Diabetes mellitus (DM) constitutes one of the public health problems today. It is characterized by hyperglycemia through a defect in the β-cells function and/or decreased insulin sensitivity. Apocynin has been tasted acting directly as an NADPH oxidase inhibitor and reactive oxygen species (ROS) scavenger, exhibiting beneficial effects against diabetic complications. Hence, the present study’s goal was to dissect the possible mechanisms by which apocynin could mediate its cardioprotective effect against DM-induced oxidative stress. Male Wistar rats were assigned into 4 groups: Control (C), control + apocynin (C+A), diabetes (D), diabetes + apocynin (D+A). DM was induced with streptozotocin. Apocynin treatment (3 mg/kg/day) was applied for 5 weeks. Treatment significantly decreased blood glucose levels and insulin resistance in diabetic rats. In cardiac tissue, ROS levels were higher, and catalase enzyme activity was reduced in the D group compared to the C group; the apocynin treatment significantly attenuated these responses. In heart mitochondria, Complexes I and II of the electron transport chain (ETC) were significantly enhanced in the D+A group. Total glutathione, the level of reduced glutathione (GSH) and the GSH/ oxidized glutathione (GSSG) ratio were increased in the D+A group. Superoxide dismutase (SOD) and the glutathione peroxidase (GSH-Px) activities were without change. Apocynin enhances glucose uptake and insulin sensitivity, preserving the antioxidant defense and mitochondrial function.

scholarly journals Plasma resistin, adiponectin and leptin levels in lean and obese subjects: correlations with insulin resistance

2003 ◽  
Vol 149 (4) ◽  
pp. 331-335 ◽  
Author(s):  
JV Silha ◽  
M Krsek ◽  
JV Skrha ◽  
P Sucharda ◽  
BL Nyomba ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Body Mass Index ◽  
Adipose Tissue ◽  
Statistical Significance ◽  
Model Assessment ◽  
Fasting Insulin ◽  
Homeostasis Model Assessment ◽  
Glucose Levels ◽  
Obese Subjects ◽  
The Relationship

OBJECTIVE: Adipose tIssue regulates insulin sensitivity via the circulating adipocytokines, leptin, resistin and adiponectin. The objective of this study was to compare the levels of resistin, adiponectin and leptin in lean and obese subjects and determine the relationship between circulating adipocytokines and insulin resistance. METHODS: We examined plasma levels of resistin, adiponectin and leptin in 17 lean subjects with a mean body mass index (BMI) of approximately 23 and 34 non-diabetic obese individuals with a mean BMI approximately 33. Insulin resistance was assessed using the homeostasis model assessment ratio (HOMA-R) formula derived from fasting insulin and glucose levels. RESULTS: Resistin levels were not significantly different between the two groups but were significantly higher in women compared with men, 35.4+/-6.5 (s.e.) vs 15.4+/-2.9 microg/L, P<0.01. Resistin did not correlate with BMI but did significantly correlate with HOMA-R, P<0.01, and this correlation remained significant after adjustment for gender and BMI. Adiponectin levels were significantly lower in obese compared with lean subjects, P<0.005, and higher in women, P<0.001, but showed no significant correlation with HOMA-R. Leptin levels were significantly higher in obese subjects and women and correlated with HOMA-R and resistin. DISCUSSION: In this small group of patients we demonstrated that insulin resistance correlated most strongly with leptin levels. A significant correlation between resistin levels and insulin resistance was also observed. Although a similar trend was apparent for adiponectin, the correlation with insulin resistance did not achieve statistical significance.

scholarly journals Risk factors for severe outcomes in people with diabetes hospitalised for COVID-19: a cross-sectional database study

BMJ Open ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. e051237
Author(s):  
Emilio Ortega ◽  
Rosa Corcoy ◽  
Mònica Gratacòs ◽  
Francesc Xavier Cos Claramunt ◽  
Manel Mata-Cases ◽  
...  
Keyword(s):  
Hospital Mortality ◽  
Invasive Mechanical Ventilation ◽  
The Elderly ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Male Sex ◽  
Poor Outcomes ◽  
The Relationship

AimThis study’s objective was to assess the risk of severe in-hospital complications of patients admitted for COVID-19 and diabetes mellitus (DM).DesignThis was a cross-sectional study.SettingsWe used pseudonymised medical record data provided by six general hospitals from the HM Hospitales group in Spain.Outcome measuresMultiple logistic regression analyses were used to identify variables associated with mortality and the composite of mortality or invasive mechanical ventilation (IMV) in the overall population, and stratified for the presence or absence of DM. Spline analysis was conducted on the entire population to investigate the relationship between glucose levels at admission and outcomes.ResultsOverall, 1621 individuals without DM and 448 with DM were identified in the database. Patients with DM were on average 5.1 years older than those without. The overall in-hospital mortality was 18.6% (N=301), and was higher among patients with DM than those without (26.3% vs 11.3%; p<0.001). DM was independently associated with death, and death or IMV (OR=2.33, 95% CI: 1.7 to 3.1 and OR=2.11, 95% CI: 1.6 to 2.8, respectively; p<0.001). In subjects with DM, the only variables independently associated with both outcomes were age >65 years, male sex and pre-existing chronic kidney disease. We observed a non-linear relationship between blood glucose levels at admission and risk of in-hospital mortality and death or IMV. The highest probability for each outcome (around 50%) was at random glucose of around 550 mg/dL (30.6 mmol/L), and the risks flattened above this value.ConclusionThe results confirm the high burden associated with DM in patients hospitalised with COVID-19 infection, particularly among men, the elderly and those with impaired kidney function. Moreover, hyperglycaemia on admission was strongly associated with poor outcomes, suggesting that personalised optimisation could help to improve outcome during the hospital stay.

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