scholarly journals Effects of intermittent (5:2) or continuous energy restriction on basal and postprandial metabolism: a randomised study in normal-weight, young participants

Author(s):  
Yangfan Gao ◽  
Kostas Tsintzas ◽  
Ian A. Macdonald ◽  
Sally M. Cordon ◽  
Moira A. Taylor

Abstract Background/objectives Intermittent energy restriction (IER) may overcome poor long-term adherence with continuous energy restriction (CER), for weight reduction. We compared the effects of IER with CER for fasting and postprandial metabolism and appetite in metabolically healthy participants, in whom excess weight would not confound intrinsic metabolic differences. Subjects/methods In a 2-week randomised, parallel trial, 16 young, healthy-weight participants were assigned to either CER (20% below estimated energy requirements (EER)) or 5:2 IER (70% below EER on 2 non-consecutive days; 5 days at EER, per week). Metabolic and appetite regulation markers were assessed before and for 3 h after a liquid breakfast; followed by an ad libitum lunch; pre- and post-intervention. Results Weight loss was similar in both groups: −2.5 (95% CI, −3.4, −1.6) kg for 5:2 IER vs. −2.3 (−2.9, −1.7) kg for CER. There were no differences between groups for postprandial incremental area under the curve for serum insulin, blood glucose or subjective appetite ratings. Compared with CER, 5:2 IER led to a reduction in fasting blood glucose concentrations (treatment-by-time interaction, P = 0.018, η2p = 0.14). Similarly, compared with CER, there were beneficial changes in fasting composite appetite scores after 5:2 IER (treatment-by-time interaction, P = 0.0003, η2p = 0.35). Conclusions There were no significant differences in postprandial insulinaemic, glycaemic or appetite responses between treatments. However, 5:2 IER resulted in greater improvements in fasting blood glucose, and beneficial changes in fasting subjective appetite ratings.

2020 ◽  
Vol 20 (3) ◽  
pp. 446-452
Author(s):  
Seyed S. Mortazavi-Jahromi ◽  
Shahab Alizadeh ◽  
Mohammad H. Javanbakht ◽  
Abbas Mirshafiey

Background: This study aimed to investigate the effects of guluronic acid (G2013) on blood sugar, insulin, and gene expression profile of oxLDL receptors (SR-A, CD36, LOX-1, and CD68) in the experimental model of diabetes. Methods: 18 Sprague Dawley rats were randomly assigned to three groups of healthy control, diabetic control, and G2013 group. Diabetes was induced through intraperitoneal (IP) injection of 60 mg/kg streptozotocin. The subjects were IP treated with 25 mg/kg of G2013 per day for 28 days. The body weight, food intake, fasting blood glucose and insulin were measured. In addition, the expression of mentioned genes was investigated through quantitative real-time PCR. Results: The data showed that the final weight increased significantly in the G2013-treated subjects compared to the diabetic control (p < 0.05). The results indicated that final food intake significantly reduced in the G2013-treated subjects compared to the diabetic control (p < 0.05). The study findings also suggested that the final fasting blood glucose significantly reduced in the G2013-treated group, whereas the final fasting serum insulin level significantly increased in this group compared to the diabetic control (p < 0.05). Moreover, the gene expression levels of SR-A, CD36, LOX-1, and CD68 in the G2013 group significantly reduced compared to the diabetic control (p < 0.05). Conclusion: This study showed that G2013, could reduce blood glucose and increase insulin levels and reduce the gene expression level of oxLDL receptors. In addition, it may probably play an important role in reducing the severity of diabetes-induced inflammatory symptoms.


2014 ◽  
Vol 92 (5) ◽  
pp. 405-417 ◽  
Author(s):  
Xian-Wei Li ◽  
Yan Liu ◽  
Wei Hao ◽  
Jie-Ren Yang

Sequoyitol decreases blood glucose, improves glucose intolerance, and enhances insulin signaling in ob/ob mice. The aim of this study was to investigate the effects of sequoyitol on diabetic nephropathy in rats with type 2 diabetes mellitus and the mechanism of action. Diabetic rats, induced with a high-fat diet and a low dose of streptozotocin, and were administered sequoyitol (12.5, 25.0, and 50.0 mg·(kg body mass)−1·d−1) for 6 weeks. The levels of fasting blood glucose (FBG), serum insulin, blood urea nitrogen (BUN), and serum creatinine (SCr) were measured. The expression levels of p22phox, p47phox, NF-κB, and TGF-β1 were measured using immunohistochemisty, real-time PCR, and (or) Western blot. The total antioxidative capacity (T-AOC), as well as the levels of malondialdehyde (MDA) and reactive oxygen species (ROS) were also determined. The results showed that sequoyitol significantly decreased FBG, BUN, and SCr levels, and increased the insulin levels in diabetic rats. The level of T-AOC was significantly increased, while ROS and MDA levels and the expression of p22phox, p47phox, NF-κB, and TGF-β1 were decreased with sequoyitol treatment both in vivo and in vitro. These results suggested that sequoyitol ameliorates the progression of diabetic nephropathy in rats, as induced by a high-fat diet and a low dose of streptozotocin, through its glucose-lowering effects, antioxidant activity, and regulation of TGF-β1 expression.


Food Research ◽  
2020 ◽  
Vol 4 (S3) ◽  
pp. 6-12
Author(s):  
D.Y. Fitranti ◽  
F.F. Dieny ◽  
D.M. Kurniawati ◽  
R. Purwanti ◽  
B. Kusumaningnastiti ◽  
...  

Metabolic syndrome can be found on an individual with normal weight (Metabolically Obese Normal Weight/MONW). Eating habits and lifestyle changing in early adulthood can be the risk of metabolic syndrome in person with a normal body mass index (BMI). The purpose of this study was to identify metabolic characteristics in women with normal BMI and to analyze the correlation of nutrition intake with metabolic syndrome on women with normal BMI. This is an observational study with a cross-sectional design at five offices in Semarang. The sample in this study was 64 subjects. Inclusion criteria of study subject were women aged 25-40 years and BMI <25 kg/m2 . Study subject was chosen by using a consecutive sampling method. The data of nutrition intake was obtained by using the Food Frequency Questionnaire. HDL cholesterol, fasting blood glucose and triglyceride were analyzed. Analysis data was conducted by using Pearson correlation and Rank Spearman. MONW was present in 10.9% and more than 50% had pre metabolic syndrome. A total of 51.6% of the subjects had central obese and 26.6% had low HDL cholesterol. About 14.1% of the subjects have hypertension. There was a positive correlation between energy, fat intake and waist circumference. Carbohydrate intake was positively correlated with fasting blood glucose and triglyceride. The higher protein intake, the higher HDL cholesterol. The most common indicator of metabolic syndrome on women with normal BMI was central obesity and low HDL cholesterol. The factors related to the prevalence of metabolic syndrome on women with normal BMI was macronutrient intake.


2008 ◽  
Vol 114 (9) ◽  
pp. 591-601 ◽  
Author(s):  
Xiao C. Li ◽  
Tang-dong Liao ◽  
Jia L. Zhuo

Clinical studies have shown that patients with early Type 2 diabetes often have elevated serum glucagon rather than insulin deficiency. Imbalance of insulin and glucagon in favouring the latter may contribute to impaired glucose tolerance, persistent hyperglycaemia, microalbuminuria and glomerular injury. In the present study, we tested the hypothesis that long-term glucagon infusion induces early metabolic and renal phenotypes of Type 2 diabetes in mice by activating glucagon receptors. Five groups of adult male C57BL/6J mice were treated with vehicle, glucagon alone (1 μg/h via an osmotic minipump, intraperitoneally), glucagon plus the glucagon receptor antagonist [Des-His1-Glu9]glucagon (5 μg/h via an osmotic minipump), [Des-His1-Glu9]glucagon alone or a high glucose load alone (2% glucose in the drinking water) for 4 weeks. Glucagon infusion increased serum glucagon by 129% (P<0.05), raised systolic BP (blood pressure) by 21 mmHg (P<0.01), elevated fasting blood glucose by 42% (P<0.01), impaired glucose tolerance (P<0.01), increased the kidney weight/body weight ratio (P<0.05) and 24 h urinary albumin excretion by 108% (P<0.01) and induced glomerular mesangial expansion and extracellular matrix deposition. These responses were associated with marked increases in phosphorylated ERK1/2 (extracellular-signal-regulated kinase 1/2) and Akt signalling proteins in the liver and kidney (P<0.01). Serum insulin did not increase proportionally. Concurrent administration of [Des-His1-Glu9]glucagon with glucagon significantly attenuated glucagon-increased BP, fasting blood glucose, kidney weight/body weight ratio and 24 h urinary albumin excretion. [Des-His1-Glu9]glucagon also improved glucagon-inpaired glucose tolerance, increased serum insulin by 56% (P<0.05) and attenuated glomerular injury. However, [Des-His1-Glu9]glucagon or high glucose administration alone did not elevate fasting blood glucose levels, impair glucose tolerance or induce renal injury. These results demonstrate for the first time that long-term hyperglucagonaemia in mice induces early metabolic and renal phenotypes of Type 2 diabetes by activating glucagon receptors. This supports the idea that glucagon receptor blockade may be beneficial in treating insulin resistance and Type 2 diabetic renal complications.


2018 ◽  
Vol 7 (4.26) ◽  
pp. 136
Author(s):  
Irfiansyah Irwadi ◽  
Hayuris Kinandita ◽  
Jamaluddin Mahmud ◽  
Lilik Herawati

Aim: Antioxidants, such as vitamin C and vitamin E, is widely used as supplements. The aim of this study is to analyze the profile of blood glucose, serum insulin, and  HOMA in active teenagers after vitamin C and vitamin E supplementation.Methods: Subjects (14-16 y.o) consisted of 12 boys and 5 girls, divided into 3 groups: control (4 boys, 2 girls), ‘moderate dose’ of vitamin C and vitamin E combination group (5 boys, 1 girls), and ‘high dose’ of vitamin C and vitamin E combination group (3 boys, 2 girls). The treatment was given for 5 days. Vitamin C and vitamin E for ‘moderate dose’ was 500mg;  200IU, and for ‘high dose’ was 1000mg; 400IU. Fasting Blood Glucose (FGB) and 1 hour BG (1hr_BG), fasting serum insulin (FSI) and 1 hour SI (1hr_SI) was collected after treatment. We also calculated the HOMA-IR and HOMA-β.Result: There was no significant difference on FBG, 1hr_BG, FSI, 1hr_SI, HOMA-IR, and HOMA-β (p≥ 0.05). However, mean FBG and 1hr_BG tended to be higher on the treatment groups. The control group had the lowest HOMA-IR and the highest HOMA-β.Conclusions: We suggest that the supplementation of vitamin C and vitamin E in active teenagers is not essential on glucose homeostasis.  


1984 ◽  
Vol 33 (3) ◽  
pp. 467-473 ◽  
Author(s):  
Y.A. Kesäniemi ◽  
M. Koskenvuo ◽  
T.A. Miettinen

AbstractFasting blood glucose and serum immunoreactive insulin (IRI) and the responses of blood glucose and serum IRI to peroral glucose challenge were investigated in middle-aged normoglycemic male twins of 17 monozygotic (MZ) and 18 dizygotic (DZ) pairs recruited from the Finnish Twin Cohort Study. Also, the role of obesity and diet in the regulation of glucose and insulin metabolism was estimated. The fasting and 2 hr postprandial (PP) glucose showed higher pairwise correlations in MZ (r =0.78 and 0.56) than DZ (r = 0.08 and −0.05) pairs whereas fasting and PP insulin levels and the areas under the PP glucose and insulin curves were weakly and similarly correlated in MZ and DZ twins. The pairwise correlations of the 1/2 hr and 1 hr, but not the fasting and 2 hr insulin/glucose ratios, were somewhat higher in MZ (R = 0.51 and 0.53) than DZ (r = = 0.28 and 0.30) pairs. In MZ twins, the intrapair differences in the body mass index were significantly correlated with those in the fasting and 2 hr PP glucose and insulin levels and those in the fasting and 1/2 hr insulin/glucose ratios (r from 0.47 to 0.76). Also, the intrapair differences in the dietary fat calories were correlated positively, but those in the calories derived from carbohydrates negatively, with the intrapair differences in several parameters of the glucose and insulin metabolism. These data suggest that the environmental contribution to the regulation of glucose and insulin metabolism in subjects within the normoglycemic range may be quite strong. Of the environmental factors studied, obesity and dietary fat consumption seem to have powerful regulatory roles, particularly in the response of insulin to the glucose load.


2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Slimane Mehdad ◽  
Abdeslam Hamrani ◽  
Khalid El Kari ◽  
Asmaa El Hamdouchi ◽  
Amina Barakat ◽  
...  

Objectives. The study aimed to assess the relationship between body fat and each of body mass index (BMI) and waist circumference (WC), and to test the effectiveness of fat mass (FM), percent of body fat (PBF), BMI, and WC in predicting high levels of fasting blood glucose (FBG).Methods. A total of 167 adolescents aged 11–17 years were recruited from Rabat region. BMI and WC were determined using standard equipments. FM and PBF were derived from isotope dilution technique. FBG was determined by the hexokinase method.Results. Regardless of the weight status, BMI showed a strong positive correlation with FM and PBF in both genders. WC was significantly correlated with FM in boys and girls, and with PBF in different groups of girls and boys of the study sample. However, there was no significant relationship between WC and PBF in normal weight and overweight-obese groups of boys. FBG was highly correlated with FM and PBF in girls of the study sample and in overweight-obese girls. Similar significant relationship between FBG and both BMI and WC was observed in overweight-obese girls, while there was no significant association between FBG and other variables in boys and normal-weight girls.Conclusion. BMI and WC were closely associated with FM and PBF, respectively. However, the degree of these associations depends on gender and weight status. BMI may provide a better proxy estimate of overall adiposity than WC; nevertheless, both of them would appear to be a reasonable surrogate for FM and PBF as screening tools to identify adolescents at risk of developing excess body fat and high level of FBG.


1980 ◽  
Vol 93 (2) ◽  
pp. 179-185 ◽  
Author(s):  
Ove R. Nilsson ◽  
Bertil Kågedal ◽  
Lennart Tegler

Abstract. The insulin release and the glucose disappearance rate (K-value) during an iv glucose tolerance test were evaluated in 20 hyperthyroid patients before and during treatment with either a non-selective (propranolol, n = 10) or a selective (metoprolol, n = 10) β-l-adrenoceptor blocking agent. Mean daily doses were 240 mg of propranolol and 280 mg of metoprolol, administered four times daily for 10 to 14 days. The insulin increase after glucose injection remained unchanged during treatment with each drug. Fasting blood glucose concentrations and the K-values were not altered during treatment. Sixteen patients were re-investigated 10 to 36 weeks later when euthyroid due to treatment by surgery, thyrostatic drugs or radioiodine. In the euthyroid state mean serum insulin concentrations after the glucose load were not significantly different from the values found when the patients were hyperthyroid. However, mean fasting blood glucose concentrations decreased from 5.5 mmol/l to 5.0 (P < 0.01) and the mean K-value increased from 1.5 to 2.0 (P < 0.05) when the patients were euthyroid. It is concluded that short-term treatment of hyperthyroid patients with non-selective or selective β-l-adrenoceptor blocking agents does not impair the glucose stimulated insulin secretion or the carbohydrate tolerance.


2020 ◽  
Vol 27 (2) ◽  
pp. 148-154
Author(s):  
Nahid Yeasmin ◽  
Qazi Shamima Akhter ◽  
Sayeeda Mahmuda ◽  
Romana Afroz ◽  
Sharmin Nahar ◽  
...  

Diabetes mellitus is one of the most widespread endocrine disorder in female and its complications are increasing all over the world, leading to life threatening medical problems like cardiovascular diseases, stroke and end stage renal diseases. A relation between hyperlipidemia and diabetes mellitus has been identified. The study was carried out to observe the serum triglycerides and total cholesterol levels its relation with type 2 diabetes mellitus in adult female subjects. This cross sectional study was conducted in the Department of Physiology, Dhaka Medical College, Dhaka, during the period of January 2011 to December 2011. A total number of sixty female subjects were selected with age ranging from30 to50 years. Among them 30 female subjects with diabetes were included from out-patient department of Endocrinology, Dhaka Medical College Hospital, Dhaka as study group(B) and 30 apparently healthy female were taken as control group(A) for comparison. Estimation of fasting serum triglycerides (TG) and total cholesterol (TC) levels were done by enzymatic method in the Department of Physiology, Dhaka Medical College Dhaka in both groups. Fasting serum insulin level was measured by ELISA method in the Department of Laboratory of National Institute of ENT, Dhaka and fasting blood glucose was estimated by glucose oxidase method in Department of Dhaka Medical College in both groups. Data were analyzed by Unpaired Student’s- test and Pearson’s correlation co-efficient (r) test as applicable. The value of fasting serum TG and TC level were significantly higher in study subjects than those of control. In study subjects fasting serum TG and fasting serum TC levels showed positive correlation with fasting blood glucose and serum insulin level. Conclusion: Present study revealed that fasting serum triglyceride (TG) and fasting serum cholesterol (TC) levels have positive relationship with fasting serum insulin and fasting blood glucose levels. J Dhaka Medical College, Vol. 27, No.2, October, 2018, Page 148-154


Circulation ◽  
2015 ◽  
Vol 131 (suppl_1) ◽  
Author(s):  
Holly C Gooding ◽  
Carly Milliren ◽  
Christina M Shay ◽  
Tracy K Richmond ◽  
Alison E Field ◽  
...  

Introduction: Adults who reach middle age with optimal levels of three physiologic factors – blood pressure, cholesterol, and blood glucose – have lower rates of CVD mortality compared to those with one or more of these risk factors in the non-optimal range. The American Heart Association has identified four healthy lifestyle components – BMI, smoking, diet, and physical activity – important for preserving optimal cardiovascular health as people age. However, which lifestyle components in adolescence are most strongly associated with physiologic markers of cardiovascular health in adulthood is unclear. The purpose of this study was to quantify associations between lifestyle components measured in adolescence and optimal physiologic cardiovascular health in young adulthood. Methods: Analyses included 9,697 young adults, age 24-32 years in 2007-2008, who participated in Wave IV of the National Longitudinal Study of Adolescent Health. We defined optimal physiologic cardiovascular heath as untreated blood pressure <120/80 mmHg, untreated fasting blood glucose <100 mg/dL and hemoglobin A1C < 5.7%, untreated total cholesterol in the bottom 7 (women) or 6 (men) deciles for the study population, and absence of diabetes or CVD as measured at Wave IV. We used logistic regression models to estimate the odds of having optimal physiologic cardiovascular health in young adulthood according to BMI category, smoking status, and physical activity patterns measured during Waves I and II when participants were ages 11-20 years. Dietary data were not available. Models were adjusted for age, sex, race, educational attainment, and income in young adulthood. Results: Few young adults (16%, 1,592 of 9,697) had optimal physiologic cardiovascular health. Young adults who had been normal-weighted in adolescence were more likely to have optimal physiologic cardiovascular health (18.4%, 1,382 of 7,206) compared to those who had been overweight (9.4%, 142 of 1,429) or obese (6.9%, 68 of 1,062). In models adjusted for young adult sociodemographic factors, participants who had been overweight or obese as adolescents were less than half as likely as those who had been normal-weighted to have optimal physiologic cardiovascular health in young adulthood (overweight odds ratio (OR) 0.43, 95% confidence interval (CI) 0.35-0.61; obese OR 0.40, 95% CI 0.28-0.57). Adolescent tobacco smoking and physical activity were not associated with young adult cardiovascular health. Conclusions: Maintaining a healthy weight in adolescence may be the most important lifestyle factor for reaching young adulthood with optimal physiologic cardiovascular health. Overweight and obese adolescents should be encouraged to achieve a healthy weight through adherence to diet and physical activity goals.


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