Showing 19 results for Insulin Resistance
Nader Shavandi, Abbas Saremi, Akbar Ghorbani, Mohammad Parastesh,
Volume 14, Issue 2 (5-2011)
Abstract
Background: Adiponectin is a protein which is initially secreted exclusively by adipocytes but its secretion decreases in obese and overweight individuals. With its anti-inflammatory properties, adiponectin acts as an agent which can decrease the risk of type II diabetes and cardiovascular diseases. The aim of this study was to determine adiponectin serum levels in type II diabetic men and explore its relationship with insulin resistance following aerobic exercise.
Materials and Methods: In this semi- experimental study, 30 men with type II diabetes were randomly assigned to training and control groups. The training group went through an 8-week training program which consisted of three 40-50 minute aerobic exercise sessions a week (running on treadmill at intensities corresponding to 30to 75% of maximal heart rate (35-75% HR max)). For measuring adiponectin and insulin serum levels, blood samples were obtained through ELISA technique in 2 stages, weeks zero and eight. For determining insulin resistance, insulin resistance index was utilized. In order to evaluate the results, dependent and independent t-tests and Pearson correlation coefficient were used.
Results: The results did not indicate the presence of a significant relationship between adiponectin and insulin resistance following training (P=0, r=-0.14). In comparison with the control group, training induced a 39% decrease in adiponectin serum levels, a 10% decrease in BMI and bodyweight, and a 48% decrease in insulin resistance (P>0.001)
Conclusions: The findings of this study showed that in response to the 8-week aerobic training program, adiponectin serum levels significantly increased while insulin resistance got decreased. In addition, there was not a significant relationship between adiponectin serum level changes following training and insulin resistance index.
Bahram Abedi, Mohammad Ali Azarbayjani, Maghsood Peeri, Mohammad Javad Rasaee,
Volume 14, Issue 5 (11-2011)
Abstract
Background: The effects of acute and chronic exercises on insulin resistance index may be related to one or more factors, including morphological changes and hormonal modifications. The purpose of this study was to investigate the effects of a single session of resistance training on adiponectin levels and insulin resistance until 24 hours post-exercise.
Materials and Methods: This experimental study, which followed a pretest-posttest design, was conducted on a group of 10 healthy male volunteers (23±1.4 years) with no history of participation in any regular exercise programs, weight changes more than 2 kg, special diseases, and smoking over the past 6 months that had normal body mass index (BMI) (23.7±1.6 kg.m-2). The subjects performed a single session resistance training (3 sets of 10 repetitions at 75% of 1 repetition maximum). Adiponectin, glucose, insulin, and insulin resistance index levels were measured before and 24 hours after the exercise.
Results: There were no significant differences for adiponectin (μ g.ml-1) pre- (6.98±1.9) and post-exercise (8.07±1.4) and glucose (mg.dl-1) pre- (81.3±7.6) and post-exercise (80.7±6.4). However, insulin resistance index pre- (1.34±0.27) and post-exercise (1.06±0.11) and insulin concentration (UΙμ.ml-1) pre-(6.64±0.88) and post-exercise (5.37±0.43) decreased significantly 24 hours post-exercise (P<0.05).
Conclusion: Based on the findings of this study, it can be suggested that a single session of resistance training with no significant changes in adiponectin level can have positive effects on glycemic indices in sedentary men.
Navid Mazruei Arani, Homa Baghaei, Ashraf Khorrami Rad, Zatollah Asemi, Sabiheosadat Alizadeh, Ahmad Esmaeilzadeh,
Volume 16, Issue 6 (9-2013)
Abstract
Background: Increased insulin resistance, inflammatory factors and parameters of oxidative stress are associated with the development of diabetes complications. This study was designed to determine the beneficial effects of synbiotic Gaz on insulin resistance, inflammatory factor and oxidative stress in patients with type 2 diabetes.
Materials and Methods: This randomized crossover double-blinded controlled clinical trial was performed among 62 diabetic patients aged 35-70 y. Subjects were randomly assigned to consume of either the synbiotic (n=62) or control Gaz (n=62) for 6 weeks. A 3-week washout period considered. The synbiotic Gaz was consisted of a probiotic viable and heat-resistance strain Lactobacillus sporogenes (1×107 CFU), 0.04 g inulin and 0.05 g stevia per 1 g as sweeteners' substances. Control Gaz (the same substance without probiotic bacteria and prebiotic inulin) was. Patients were received synbiotic and control foods in a 7 g package thrice a day. Fasting blood samples were taken at baseline and after 6-week intervention to measure insulin resistance, hs-CRP and biomarkers of oxidative stress.
Results: Consumption of synbiotic Gaz, compared with control, resulted in a significant decrease in serum insulin (p=0.02) and hs-CRP levels (p=0.008). Supplementation with synbiotic Gaz led also to a significant increase in plasma total glutathione (p<0.0001) compared to the control.
Conclusion: In conclusion, consumption of synbiotic Gaz for 6 weeks resulted in decreased levels of serum insulin, hs-CRP and increased levels of plasma total glutathione.
Nahid Bijeh, Sadegh Abbasian,
Volume 16, Issue 7 (10-2013)
Abstract
Background: Interleukin-1&beta (IL-1&beta) as a cytokine act in relationship to development of obesity and Insulin resistance. purpose of the study was compare the effects of Ramadan fasting (as dietary pattern) and aerobic exercise training on IL-1&beta and Insulin resistance in non-active obese subjects.
Materials and Methods: This study was semi-experimental research with repeated measures design. In this study, 18 obese male in Mashhad (between 40 to 50 years old and body mass index>30 Kg/m2) randomly was selected and after it was divided into fasting (N=9) and fasting and aerobic exercise training (N=9) groups. While the first group performed the fasting, then other group was performed aerobic exercise training for 27 sessions. They also performed the fasting. Finally, blood samples were taken for four different times.
Results: Statistic analysis shown that body fat percent of subjects was significantly decreased in both groups (p<0.05). Also, amount of insulin resistance was significantly decreased in fasting group (p<0.05). In addition, amount of IL-1&beta was significantly decreased in both groups(p<0.05).
Conclusion: Research results shown that levels of IL-1&beta decreased by fasting and especially by aerobic exercise training and it may lead to the decrease of insulin resistance in obese subjects.
Mozhgan Aghamohammadi, Abdolhamid Habibi, Roohollah Ranjbar,
Volume 18, Issue 11 (2-2016)
Abstract
Background: Irisin, a recently identified myokine that seems had important role in hemostasis regulatation and improving insulin resistance. The effect of exercise training on serum irisin levels in type 2 diabates (T2D) is controversial. This study aims to investigate the effect of 6 weeks selective aerobic training on serum irisn levels and insulin resistance in women with T2D.
Materials and Methods: This research is a semi experimental study with pre-and post-test design. Research subjects were 20 women with T2D (mean age 47.4±5.6 years and BMI 29.92±3.42). Subjects were randomly divided into 2 groups: exercise group (n=12) and control group (n=8). Training protocol performed in 6 weeks (4 times a weeks, 40-65 min per session) and main training intencity and time were increased per week (50%-80% Hrmax). Main aerobic training was performed in 6 blocks, each block consisted of 32. Blood sample was collected before the and after end of training protocol.
Results: The results showed significant decrease in blood glucose, insulin and insulin resistance index and significant increase in serum irisin levels in exercise group compared with the control group (p≤0.05), but there is no significant correlation between serum irisin levels and insulin resistance.
Conclusion: It seems that aerobic training can have considerable impact on serum irisin levels, fasting blood glucos and insulin resistance index in women with T2D.
Rahman Soori, Mohammad Reza Asad, Mahboobe Khosravi, Sadegh Abbasian,
Volume 19, Issue 4 (7-2016)
Abstract
Background: Irisin is a new myokine that exerts its positive effects via increasing energy expenditure. The purpose of this study was to determine the effect of submaximal aerobic training on serum irisin level and irisin-related insulin-resistance change in obese men.
Materials and Methods: In this study, 26 obese men were selected as statistical sample and they were divided into experimental groups. Former group (13 men) consisted of subjects who carried out exercise training with 50-60 percent of maximum max heart rate for 10 continuous weeks (3 sessions per week for 30 to 45 minutes in each session). Later group was consisted of subjects who do not carried out exercise training. After the interventions of study, irisin serum levels, insulin resistance indices, body composition and maximum oxygen consumption were determined. Finally, data were analyzed by Stata software.
Results: Statistical data analysis illustrated that the amounts of irisin serum were significantly increased in exercise training group than control group (14.75±6.22; p=0.022) after the intervention. Also, only body fat percentage (1.242±0.57) and max oxygen consumption (1.509±0.328) of subjects were significantly increased (p=0.034 and p=0.0001, respectively). However, there were not statistically significant changes in irisin- related insulin-resistance indices (p>0.05).
Conclusion: Current study presented that serum irisin was increased after 30 submaximal exercise training sessions regardless of insulin resistance changes in obese men.
Mousa Khalafi, Fatemeh Shabkhiz, Karim Azali Alamdari, Afarin Bakhtiyari,
Volume 19, Issue 6 (9-2016)
Abstract
Background: Irisin is an exercise-induced myokine that is reduced with type 2 diabetes and improves insulin resistance via the browning of white adipose tissues. However, irisin response to two types of exercise in patients with type 2 diabetes is unknown.
Materials and Methods: In this study, 22 diabetic Wistar rats (Induced by high-fat diet and injections Stz) were randomly assigned to 3 groups: high intensity interval exercise (HIIT), low intensity continuous training (LICT) and control (C). Both HIIT and LICT groups trained on the treadmill 5 sessions per week for 8 weeks. Blood samples were taken 24 hours after the last training session and plasma irisin, insulin and glucose levels were measured. ANOVA and Tukey post hoc tests were used to analyze data and the level of significance has been considered at p≤0.05.
Results: Data analysis showed that plasma irisin levels in the HIIT group were significantly increased compared to the control group (p<0.05). However, there was no significant difference between other groups (p>0.05). Plasma glucose in both HIIT and LICT groups was significantly decreased compared to the control group (p<0.05). But plasma insulin levels and insulin resistance index were not different between groups (p>0.05).
Conclusion: The results of this study showed that exercise training can increase plasma irisin in rats with type 2 diabetes. However, these changes are partially dependent on the type of exercise training.
Faranak Balaghi Inaloo, Saeed Shakeryan, Mohsen Ghanbarzadeh, Reza Fatemi Tabatabaei,
Volume 19, Issue 9 (12-2016)
Abstract
Abstract
Background: Recently a myokine named irisin has been discovered that effects on obesity, metabolism and glucose homeostasis through browning white adipose tissue and thermogenesis. However, the effects of type and intensity of exercises on it have remained unclear. The purpose of this study was to evaluate the effects of two acute eccentric and concentric exercises on serum irisin level and insulin resistance in obese sedentary women.
Materials and Methods: The study was quasi-experimental. 15 female students with a body mass index above 30 kg/m2 and mean age 24.86±2.87 years participated in the study. After measuring the maximal uptake oxygen of participants, they did two acute eccentric and concentric exercises using treadmill in a cross-over design within 10 days. After at least 8 hours- fasting, blood samples were collected before and immediately after each activity, to measure the levels of irisin, glucose and insulin. Data were analyzed using paired t-test and repeated measures ANOVA. In addition, Pearson correlation was used to examine the relationship between variables.
Results: the irisin levels increased significantly after both types of exercises (p<0.05), that this increase in concentric activity was more than eccentric activity. Insulin resistance increased immediately after both exercises as well, that this increase in concentric exercise was statistically significant (p<0.05).
Conclusion: However, both eccentric and concentric exercises had no effect on improving insulin resistance in obese women, but they can be considered as a good stimulus for the secretion of Irisin.
Rahman Soori, Fardin Fardin Sohrabi, Sirous Choobineh, Ali-Asghar Ravasi, Kazem Baesi, Sadegh Abbasian,
Volume 19, Issue 11 (2-2017)
Abstract
Abstract
Background: Protein tyrosine phosphatase 1B (PTP1B) is a key enzyme in dephosphorylation of the insulin receptor (IR) and it is a central factor to induce the insulin resistance. The purpose of this study was to evaluate the effect of 12-week aerobic training on protein tyrosine phosphatase 1B gene expression and insulin resistance in diabetic rats.
Materials and Methods: In this study, 16 Wistar rats were divided into aerobic training and control groups. After inducing diabetes intra protaneally, aerobic training group performed training protocol for 12 weeks and 5 session/week. The duration and speed of each session increased progressively as 18 to 26 m/min and 10 to 55 min, respectively. Then, blood and tissue (from gastrocnemius) sampling were carried out in diabetic rats. Insulin resistance markers and PTP1B gene expression were evaluated by commercial kits and Real-Time PCR method, respectively.
Results: Findings showed that PTP1B significantly was decreased in diabetic rats of aerobic training group (p=0.0001). Also, glucose and insulin resistance significantly was decreased in aerobic training groups (p=0.02 and p=0.006, respectively). However, insulin in control rats was significantly increased (p=0.015).
Conclusion: It seems that, current aerobic training protocol has capability to decrease PTP1B and insulin resistance in diabetic rats. Furthermore, the direct correlation between PTP1B and insulin illustrated that any changes in insulin resistance due to exercise training associated with diminution of negative regulation of insulin signaling pathway.
Ali Heidarianpour, Zahra Razavi, Masoomeh Seif,
Volume 20, Issue 1 (4-2017)
Abstract
Abstract
Background: The aim of this study was to investigate the effect of aerobic exercise and GnRH agonist on the levels of apelin and insulin resistance index in girls with central precocious puberty.
Materials and Methods: In this study, twenty-five girls (7.44±0.34 years) with precocious puberty were included. They were randomly divided into three groups (drug, n=10, exercise+drug, n=8, and exercise, n=7) and one control group (healthy, n=10). In the experimental group, aerobic exercise for 12 weeks, 3 days/week was done, duration intensity of exercise gradually increased 5 minutes and 5% respectively every 2 week. Also, the GnRH agonists were used as medicine. BMI, the apelin and insulin resistance index were assessed before and after exercise.
Results: Insulin resistance index and apelin serum levels in experimental group (exercise and exercise+ drug) were significantly decreased(p=0.05), while these factors were unchanged in control group (p=0.05). Additionally, BMI in exercie groups was significantly decreased (p=0.000), while it was increased in experimental group (drug group) (p=0.06).
Conclusion: Considering to current data, it could demonstrate that aerobic training and GNRH agonists at the same time can lead to a decrease in BMI and apelin and an improvement in insulin resistance index.
Hamid Alizadeh, Alireza Safarzadeh, Elahe Talebi-Garakani,
Volume 20, Issue 7 (10-2017)
Abstract
Abstract
Background: Adipose tissue's phenotypic alteration due to exercise training is a new theory. However, the cellular–molecular mechanisms for these phenotypic alterations are not yet clearly
understood. The aim of this study was to investigate the effects of six weeks resistance training on Meteorin-like hormone level and insulin resistance index in overweight adolescent boys.
Materials and Methods: Twenty overweight adolescent boys (average age 18.5±1 years old, average weight 81.1±4.5 kg, and BMI 27.7±0.7 kg/m2) participated in this study. The subjects were randomly assigned into two groups: control (N=10) and resistance training (N=10). Subjects in training group performed six-week resistance training program 3 days/week. Anthropometrics parameters and fasting serum of Meteorin-like hormone levels, insulin and glucose were measured at the baseline and at the end of study.
Results: The level of Meteorin-like hormone was significantly decreased in control group (p=0.008), but that of Meteorin-like hormone in resistance training was increased insignificantly (p=0.311). The variations of Meteorin-like hormone levels between two groups were significant (p=0.004). The changes of insulin resistance were increased in both groups which were statistically significant (p=0.032) and insignificant (p=0.632) for control and training groups respectively. We found a negative and insignificant correlation between changes in Meteorin-like hormone levels and changes in insulin resistance index (p=0.273).
Conclusion: The results showed that six weeks’ resistance training has no effect on increasing Meteorin-like hormone serum level and improving insulin resistance index and body composition in overweight adolescent boys.
Darya Asgari Hazaveh, Shahin Riyahi Malayeri, Saeid Babaei,
Volume 20, Issue 11 (2-2018)
Abstract
Abstract
Background: The use of herbal supplements and exercise training for the treatment of diabetic has increased.The purpose of this study was to investigate the effect of eight weeks high intensity interval training and moderate intensity interval training and Aloe vera intake on serum vaspin and insulin resistance in diabetic male rats.
Materials and Methods: During this experimental study, 32 diabetic rats with STZ Wistar were randomly divided into four groups including the control, high intensity interval training +supplement, moderate intensity interval training + supplement and supplement. Training program was planned for 8 weeks and 3 sessions per week. Each session consisted of 6 to 12 periods of 2-minute activity with the intensity of 90% and 60% with one minute rest (speed: 10m/min). In the supplement groups, 300milligrams Aloe vera solution per kilogram of body weight Gavage was given 5 sessions per week for 8 weeks. The data were analyzed using one-way analysis of variance (ANOVA).
Results: The results showed that high and moderate intensity interval training with supplement has no significant effect on the of serum vaspin (p=0.112). High intensity interval training with supplement had significant effects on insulin in diabetic male rats (0.000).
Conclusion: .Based on the findings of this study, it seems that supplementation of Aloe vera with high intensity interval training can have better effects on serum insulin in diabetic rats.
Mohsen Salesi, Mohammad Mehrtash, Farhad Daryanoosh, Nader Tanide,
Volume 21, Issue 5 (10-2018)
Abstract
Background and Aim: Excessive fat accumulation is one of the most important mechanisms of type 2 diabetes and insulin resistance. Accordingly, in this study, we will examine the effect of caloric restriction on lipid coat proteins that prevent lipolysis of the adipose tissue.
Materials and Methods: In this study, 30 adult male Sprague-Dawley rats (200 ± 20 weight) were used. First, rats were divided into 2 groups (standard and high-calorie diet). After 8 weeks, the high-calorie diet group was randomly assigned to two subgroups: caloric restriction and high-fat diet. Finally, the amount of perilipin 1 and 5 genes expression evaluated by Pcr and insulin resistance evaluated by HOMA index.
Findings: The weight and insulin resistance of the high-fat diet group was significantly higher than the standard and calorie restriction group (p≤0.005). Insulin resistance was not significantly different between the caloric restriction and standard group (p = 0.394). The expression of perilipin 1 in the adipose tissue of the high-fat diet was significantly higher than the caloric restriction group (p ≤0.005). The expression of perilipin 1 gene in skeletal muscle in the high-fat diet group was significantly higher than the calorie restriction and standard diet groups (p≤0.005). The calorie restriction group had more perilipin 5 expressions than the high-fat diet and the standard group (p ≤0.005).
Conclusion: The caloric restriction may be due to the effect on lipid coat proteins and, as a result, a decrease in fat accumulation, that it can prevent insulin resistance.
Sahar Parseh, Saeid Shakerian, Ali Akbar Alizadeh,
Volume 22, Issue 1 (4-2019)
Abstract
Background and Aim: Polycystic Ovary Syndrome (PCOS) is one of the most common endocrine abnormalities that insulin resistance and obesity are among its main causes. The purpose of this study was to investigate the effect of chronic aerobic and resistive exercises along with supplementation of cinnamon on insulin resistance in women with polycystic ovary syndrome in Ahwaz in 2017.
Materials and Methods: In this semi-experimental study, 40 women with aged 18 to 30 years (BMI ≤24) were randomly divided into 4 groups. The intervention group performed 6 weeks, 3 sessions per week with intensity 50 to 75% of maximum heart rate for 50 to 85 minutes of exercise aerobic-resistance. Serum levels of insulin, glucose, and body composition indexes were evaluated. The t-test was correlated and ANCOVA was used.
Ethical Considerations: This study with research ethics code EE/ 96.24.3.77886/Scu.ac.ir has been approved by research ethics committee at Shahid Chamran University of Ahvaz, Iran.
Findings: Data analysis showed that body mass index, fat percentage and insulin resistance were decreased in exercise and supplementation exercises (p≤0.05). Cinnamon was also effective in combination with combined exercises in body composition and insulin resistance index (p≤0.05). Changes in fat free mass were not significant in any of the groups (p≤0.05).
Conclusion: It seems that this decrease in the difference in insulin resistance is more due to the combined exercise, and given the positive effect of cinnamon on reducing BMI, its use may be effective in the long term on insulin resistance.
Afsaneh Talaei, Mehdi Mahmudpour, Maryam Shahdost,
Volume 22, Issue 2 (6-2019)
Abstract
Background and Aim: Regarding the controversy about the effects of atorvastatin on blood glucose control and diabetes, we evaluated the effects of atorvastatin on blood glucose and insulin resistance in the present study.
Materials and Methods: 88 type two diabetic patients (T2DP), were treated with anti-diabetes oral agents were enrolled in a double blind randomized clinical trial, placebo control. Then they were randomly classified into two 44 cases groups. The intervention group took atorvastatin 40 mg daily and control group took placebo for three months and fasting blood glucose (FBS), insulin resistance, HbA1c and lipid profile were measured and compared at the beginning and the end of the study. Data were analyzed using student t-test and paired t-test.
Ethical Considerations: This study with research ethics code IR.ARAKMU.REC.90.108.10 has been approved by research ethics committee at Arak University of Medical Sciences.
Findings: After three months, insulin, insulin resistance and HbA1c decreased significantly in the intervention group than control group, while FBS non-significantly decreased. Total cholesterol and LDL cholesterol (Low density Lipoprotein) were also decreased.
Conclusion: It seems atorvastatin is effective to decrease FBS and insulin resistance in diabetic patients.
Mohammad Reza Asad, Shokoufeh Kheradmand, Narges Kheradmand,
Volume 22, Issue 5 (11-2019)
Abstract
Background and Aim Exercise improves sensitivity to insulin by reducing some adipokines including chemerin. However, the effect of endurance exercise and high-intensity intermittent exercise on chemerin level and insulin resistance in obese male rats is still unknown.
Methods & Materials In this study 27 male rats were randomly divided into 4 groups of sedentary control (n=6), endurance exercise (n=8), high-intensity intermittent exercise (n=8) and untreated obese control (n=5). Both endurance and high intensity intermittent exercise groups performed exercises for 8 weeks. The plasma level of chemerin was measured by ELISA method.
Ethical Considerations ???
Results The chemerin level was significantly reduced in the endurance group compared to the untreated obese control group (P<0.01), but it had no significant change compared to the sedentary control group. Moreover, the plasma level of chemerin in the high-intensity intermittent group was not significantly different from that of untreated obese control group and sedentary control group (P>0.05) and chemerin level reduction in the endurance group was significant compared to the high-intensity intermittent group (P<0.05). Furthermore, there was no significant difference in the insulin resistance reported in high-intensity intermittent group compared to that of endurance group (P>0.05), but its difference in high-intensity intermittent and endurance training groups was significant compared to that of untreated obese control and sedentary control groups (P<0.05).
Conclusion Both endurance and high-intensity intermittent exercises can reduce insulin resistance which can be due to the reduction of chemerin plasma level and weight loss.
Asma Soleimani, Mohammad Fathi,
Volume 25, Issue 2 (5-2022)
Abstract
Background and Aim Recently, a myokine called irisin has been discovered that affects glucose level, obesity, metabolism and glucose homeostasis by browning of white adipose tissue and heat production. This study aims to evaluate the effect of four weeks of ginger supplementation followed by acute eccentric and concentric training on irisin and insulin levels, insulin resistance index, and lipid profile of young women with obesity.
Methods & Materials This is a randomized clinical trial. Participants were 50 young women (BMI >30 kg/m2, age: 24.86±2.87 years, height: 159.66±4.20 cm, and weight: 87.42±4.61 kg). After measuring their maximum oxygen consumption, they were randomly divided into five groups, two groups of supplementation, two groups of placebo, and one control group. The training protocol consisted of two sessions of acute eccentric and concentric activity. The supplementation groups consumed 2 g of ginger powder daily for 4 weeks. Blood samples were collected before and immediately after each activity. Data were analyzed using dependent t-test and one-way analysis of variance (ANOVA).
Ethical Considerations This study was registered by Iranian Registry of Clinical Trials (Code: IRCT201104246178N1) and was approved by the ethics committee of Ilam University of Medical Sciences (Code: IR.MEDILAM.REC.1395.192).
Results The irisin and insulin levels between increased and the glucose level decreased significantly in the supplementation groups (P<0.05). The change in insulin resistance index was not significantly different among the study groups (P>0.05). Based on the results of one-way ANOVA, triglyceride and low-density lipoprotein levels decreased significantly (P<0.05), but the high-density lipoprotein level showed no significant difference (P<0.05). The total cholesterol level was not significantly different in terms of exercise type (P> 0.05) but was significantly different in terms of supplementation type (P<0.05).
Conclusion Long-term consumption of ginger along with regular exercise can be an effective method for lowering glucose level and causing favorable changes in irisin level, insulin resistance, and lipid profile in young women with obesity.
Seyed Mohsen Madani Larijani, Zahra Salemi, Mohammad Reza Rezvanfar, Pegah Mohaghegh,
Volume 25, Issue 5 (12-2022)
Abstract
Introduction: Fetuin-A is a secreted protein from the liver, which plays a role in microvascular disorders of diabetes through insulin resistance and inflammation. The aim of this study is to investigate the amount of fetuin-A in diabetic patients without and with microvascular disorders.
Methods: 90 people in 4 groups, diabetic control, nephropathy, retinopathy and retinopathy-nephropathy participated in this research. Data were analyzed using Kruskal-Wallis and Pearson correlation tests. Measurement of parameters including VEGF, interleukin 8 (IL-8), insulin, interleukin 6 (IL- 6) and Fatuin-A was done by ELISA method. The concentration of C-reactive protein (CRP) was measured by nephrometric method.
Ethical considerations: This study was conducted after the approval of the protocol in the research ethics committee and receiving the ethical code number IR.ARAKMU.REC.1400.250 and according to the Declaration of Helsinki.
Results: The obtained results showed that the correlation between fetuin-A and VEGF in the control group was not significant (p=0.234), in the nephropathy group it was significant (p<0.01), in the retinopathy group it was significant (p<0.01) and in the retinopathy group - Nephropathy was significant (p=0.032). Also, the correlation between fetuin-A and interleukin-6 in the nephropathy group is not significant (p=0.285), in the retinopathy group is not significant (p<.075), in the retinopathy group is not significant (p<0.059) and in the retinopathy-nephropathy group. It was insignificant (p=0.113). The correlation between fetuin-A interleukin 8 in the control group is not significant (p=0.592), in the nephropathy group (p=0.592), in the retinopathy group (p=0.314) and in the retinopathy-nephropathy group (p= 0.362). The correlation between Fetuin-A and the homeostatic model of insulin resistance was significant in all groups (p<0.01). Fetuin-A and VEGF levels in the three groups of nephropathy and retinopathy increased significantly compared to the control group. The amount of interleukin 6, interleukin 8 and homeostatic model of insulin resistance in nephropathy, retinopathy and retinopathy-nephropathy groups has increased significantly compared to the control group.
Conclusions: Because fetuin-A is directly related to insulin resistance and VEGF production, its control can have an effect in preventing and controlling the development of microvascular disorders, especially in the early stages of diabetes. Although the results showed that fetuin-A level has no significant relationship with inflammatory factors such as interleukin 6 and interleukin 8, especially in the retinopathy-nephropathy group, but a significant increase of interleukin 6, interleukin 8 and CRP in patients with microvascular disorders to the diabetic control group, it shows the importance of inflammation in the development and progression of microvascular disorders and the importance of its control in diabetic patients.
Hamid Moghavemi, Sadegh Abbasian, Mohammad Ali Sardar,
Volume 27, Issue 5 (12-2024)
Abstract
Introduction: Reducing physical activity as well as consuming more calories than the body needs increases obesity and its related disorders, such as metabolic syndrome. Therefore, this study aimed to determine the effect of eight weeks of high-intensity interval training (HIIT) and resistance training (RT) on brain tissue gene expression of AKT2 and insulin resistance in obese Wistar rats.
Methods: 30 male rats weighing 160 to 185 grams were fed a high-fat diet for 12 weeks. After the approval of the obesity protocol of increasing the weight of the rats, which to be more than 300 grams, the rats were divided into three groups, including the control group (n = 10), HIIT group (n = 10), as well as RT group (n = 10). Until the end, the rats continued to eat a high-fat diet. HIIT was performed for eight weeks and five sessions per week, with an intensity of 80 to 95% of maximum oxygen consumption on a treadmill. Moreover, RT was performed with an intensity of 40-60% of a maximum repetition on the ladder. After eight weeks of training interventions, the expression level of the AKT2 gene in brain tissue was measured by the real-time PCR method.
Results: The results of the present study demonstrated a significant increase in AKT2 gene expression of HIIT and RT groups compared to the control group (P < 0.05). Furthermore, the results illustrated that the insulin resistance of rats in both training groups was significantly reduced (P < 0.05).
Conclusions: According to the findings of the present research, it could be concluded that HIIT, as well as RT interventions, probably causes an increase in AKT2 gene expression and could be effective in reducing insulin resistance and improving glucose profile.
