Pub Date : 2020-02-02DOI: 10.1007/978-3-030-25057-7
P. Zeitler, K. Nadeau
{"title":"Insulin Resistance: Childhood Precursors of Adult Disease","authors":"P. Zeitler, K. Nadeau","doi":"10.1007/978-3-030-25057-7","DOIUrl":"https://doi.org/10.1007/978-3-030-25057-7","url":null,"abstract":"","PeriodicalId":32155,"journal":{"name":"Journal of Insulin Resistance","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90498892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: Type 2 diabetes mellitus (DM), a chronic metabolic disease prevalent in adults, is also prevalent amongst children, adolescents and young adults. On understanding the molecular basis of diabetes, a significant association is found between telomere length (TL) and type 2 DM.Aim: The aim of the study was to review the available evidence on effect of physical activity and yoga on DM including their effect on TL.Setting: The study was conducted in Bangalore.Method: A number of databases such as Google Scholar, PubMed and Cochrane Review were searched for relevant articles using keywords such as ’diabetes’, ‘type 2 DM’, ‘physical activity’, ‘yoga’, ‘TL’ and ‘telomerase activity’. All types of articles were included for the study, such as randomised controlled trial, systematic reviews, literature review and pilot study. Non-English articles were excluded from the study.Results: Studies have demonstrated the effectiveness of yoga and physical exercise in type 2 DM in various ways, such as reducing fasting blood glucose and glycosylated haemoglobin; improving lipid profile, blood pressure and waist-to-hip ratio; reducing inflammatory, oxidative and psychological stress markers; and improving the quality of life of patients. However, limited information is available on the effect of these interventions on TL in type 2 DM and mechanisms involved.Conclusion: Recent studies have shown positive effects of yoga and physical activity on TL. However, there is a dearth of good-quality studies evaluating the effects of yoga on TL in type 2 DM. Future studies need to be conducted with standard treatment protocols, long-term follow-up, appropriate control groups and large sample size.
{"title":"Type 2 diabetes mellitus, physical activity, yoga and telomere length: A literature review","authors":"Reepa A. Ughreja, Reena Ughreja","doi":"10.4102/jir.v4i1.52","DOIUrl":"https://doi.org/10.4102/jir.v4i1.52","url":null,"abstract":"Background: Type 2 diabetes mellitus (DM), a chronic metabolic disease prevalent in adults, is also prevalent amongst children, adolescents and young adults. On understanding the molecular basis of diabetes, a significant association is found between telomere length (TL) and type 2 DM.Aim: The aim of the study was to review the available evidence on effect of physical activity and yoga on DM including their effect on TL.Setting: The study was conducted in Bangalore.Method: A number of databases such as Google Scholar, PubMed and Cochrane Review were searched for relevant articles using keywords such as ’diabetes’, ‘type 2 DM’, ‘physical activity’, ‘yoga’, ‘TL’ and ‘telomerase activity’. All types of articles were included for the study, such as randomised controlled trial, systematic reviews, literature review and pilot study. Non-English articles were excluded from the study.Results: Studies have demonstrated the effectiveness of yoga and physical exercise in type 2 DM in various ways, such as reducing fasting blood glucose and glycosylated haemoglobin; improving lipid profile, blood pressure and waist-to-hip ratio; reducing inflammatory, oxidative and psychological stress markers; and improving the quality of life of patients. However, limited information is available on the effect of these interventions on TL in type 2 DM and mechanisms involved.Conclusion: Recent studies have shown positive effects of yoga and physical activity on TL. However, there is a dearth of good-quality studies evaluating the effects of yoga on TL in type 2 DM. Future studies need to be conducted with standard treatment protocols, long-term follow-up, appropriate control groups and large sample size.","PeriodicalId":32155,"journal":{"name":"Journal of Insulin Resistance","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42413101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: Polycystic Ovary Syndrome (PCOS) is a very common endocrine disorder of young women.Aim: The proper treatment of PCOS requires a thorough understanding of the underlying cause of disease. In this article, we review the extent to which hyperinsulinemia contributes to the development of PCOS.Setting: The goal of this review was to assess the current literature on the contribution of hyperinsulinemia to the hyperandrogenism of polycystic ovary syndrome in hopes of promoting future research and advancements in clinical treatments for women with PCOS focusing on this major contributing factor, hyperinsulinemia.Method: A review of published peer-reviewed literature was conducted by searching the keywords.Results: Excessive insulin causes both the overproduction of testosterone and decreased sex hormone binding globulin (SHBG) levels seen in PCOS, both of which collaborate in creating an increased testosterone effect.Conclusion: The majority of research and evidence shows that the hyperandrogenism of PCOS is likely caused by hyperinsulinemia. Yet the conventional treatment of hyperandrogenic symptoms in women with PCOS is not directed towards correcting this underlying hyperinsulinemia. Further research is needed to assess how the treatment of the hyperinsulinemia through lifestyle would compare to the current treatment of hyperandrogenemia through testosterone-lowering drugs.
{"title":"The contribution of hyperinsulinemia to the hyperandrogenism of polycystic ovary syndrome","authors":"Nadia B. Pateguana, A. Janes","doi":"10.4102/JIR.V4I1.50","DOIUrl":"https://doi.org/10.4102/JIR.V4I1.50","url":null,"abstract":"Background: Polycystic Ovary Syndrome (PCOS) is a very common endocrine disorder of young women.Aim: The proper treatment of PCOS requires a thorough understanding of the underlying cause of disease. In this article, we review the extent to which hyperinsulinemia contributes to the development of PCOS.Setting: The goal of this review was to assess the current literature on the contribution of hyperinsulinemia to the hyperandrogenism of polycystic ovary syndrome in hopes of promoting future research and advancements in clinical treatments for women with PCOS focusing on this major contributing factor, hyperinsulinemia.Method: A review of published peer-reviewed literature was conducted by searching the keywords.Results: Excessive insulin causes both the overproduction of testosterone and decreased sex hormone binding globulin (SHBG) levels seen in PCOS, both of which collaborate in creating an increased testosterone effect.Conclusion: The majority of research and evidence shows that the hyperandrogenism of PCOS is likely caused by hyperinsulinemia. Yet the conventional treatment of hyperandrogenic symptoms in women with PCOS is not directed towards correcting this underlying hyperinsulinemia. Further research is needed to assess how the treatment of the hyperinsulinemia through lifestyle would compare to the current treatment of hyperandrogenemia through testosterone-lowering drugs.","PeriodicalId":32155,"journal":{"name":"Journal of Insulin Resistance","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48474942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Crofts, G. Schofield, Mark C. Wheldon, C. Zinn, J. Kraft
Background: Ascertaining Kraft dynamic insulin response patterns following a 3-h 100 g oral glucose tolerance test seems to be the most reliable method for diagnosing hyperinsulinaemia. However, this test may be too resource-intensive for standard clinical use. Aim: This study aims to see if Kraft patterns can be accurately predicted using fewer blood samples with sensitivity and specificity analyses. Setting: St Joseph Hospital, Chicago, Illinois, United States and Human Potential Centre, Auckland University of technology, Auckland, New Zealand. Method: We analysed the results of 4185 men and women with a normal glucose tolerance, who had a 100 g oral glucose tolerance test with Kraft pattern analysis. Participants were dichotomised into normal–low insulin tolerance (Kraft I or V patterns) or hyperinsulinaemia (Kraft IIA–IV patterns). Sensitivity and specificity analysis was applied to available variables (including age, body mass index, fasting insulin or glucose) both individually and in combination. Results: Out of a maximal combined sensitivity and specificity score of 2.0, 2-h insulin level > 45 µU/mL attained the highest score (1.80). Two-hour insulin also attained the highest sensitivity (> 30 µU/mL, 0.98) and the highest specificity (> 50 µU/mL, 0.99) scores. Combining the 2-h insulin with other variables reduced the sensitivity and/or specificity. Dynamic measures had a better combined sensitivity and specificity compared to fasting or anthropological measures. Conclusion: People with a 2-h plasma insulin level 30 µU/mL following a 100 g oral glucose tolerance test be used to identify the hyperinsulinaemic individual.
{"title":"Determining a diagnostic algorithm for hyperinsulinaemia","authors":"C. Crofts, G. Schofield, Mark C. Wheldon, C. Zinn, J. Kraft","doi":"10.4102/JIR.V4I1.49","DOIUrl":"https://doi.org/10.4102/JIR.V4I1.49","url":null,"abstract":"Background: Ascertaining Kraft dynamic insulin response patterns following a 3-h 100 g oral glucose tolerance test seems to be the most reliable method for diagnosing hyperinsulinaemia. However, this test may be too resource-intensive for standard clinical use. Aim: This study aims to see if Kraft patterns can be accurately predicted using fewer blood samples with sensitivity and specificity analyses. Setting: St Joseph Hospital, Chicago, Illinois, United States and Human Potential Centre, Auckland University of technology, Auckland, New Zealand. Method: We analysed the results of 4185 men and women with a normal glucose tolerance, who had a 100 g oral glucose tolerance test with Kraft pattern analysis. Participants were dichotomised into normal–low insulin tolerance (Kraft I or V patterns) or hyperinsulinaemia (Kraft IIA–IV patterns). Sensitivity and specificity analysis was applied to available variables (including age, body mass index, fasting insulin or glucose) both individually and in combination. Results: Out of a maximal combined sensitivity and specificity score of 2.0, 2-h insulin level > 45 µU/mL attained the highest score (1.80). Two-hour insulin also attained the highest sensitivity (> 30 µU/mL, 0.98) and the highest specificity (> 50 µU/mL, 0.99) scores. Combining the 2-h insulin with other variables reduced the sensitivity and/or specificity. Dynamic measures had a better combined sensitivity and specificity compared to fasting or anthropological measures. Conclusion: People with a 2-h plasma insulin level 30 µU/mL following a 100 g oral glucose tolerance test be used to identify the hyperinsulinaemic individual.","PeriodicalId":32155,"journal":{"name":"Journal of Insulin Resistance","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43932666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Holland, A. Qazi, Kristen N. Beasley, H. R. Bennett
Background: Exogenous ketone salts (KS) have been administered as treatment for various health conditions; however, the safety of chronic supplementation in a healthy population has yet to be explored. Aim: This study examined the safety of KS supplementation for 6 weeks in healthy, young adults and determined the effects of KS on blood ketone levels. Setting: Data collection occurred in a laboratory at Augusta University. Methods: Twenty-three men and women (aged 18–35 years old) supplemented with KS or a placebo (PLA) twice per day for 6 weeks in a randomised, double-blinded, PLA-controlled design. Baseline and post-intervention measures included body mass index (BMI), resting blood pressure and heart rate, questionnaires assessing mood and energy, urinalysis, and venous blood measures, including comprehensive metabolic panel (CMP), lipid panel, and complete blood count (CBC). In addition, the participants consumed the assigned supplement during the baseline and post-intervention visits; blood ketone levels were assessed immediately before and after 30 and 60 min post-supplementation. Results: Systolic blood pressure was significantly lower ( p < 0.05) after supplementing with KS for 6 weeks but not PLA. All other health parameters remained unchanged by KS supplementation, including BMI, resting heart rate, urinalysis, CMP, lipid panel, and CBC. After acute administration of KS but not PLA, blood ketone levels were significantly elevated ( p < 0.001) 30 and 60 min after supplementation at both baseline and post-intervention visits. Conclusion: Chronic KS supplementation seems safe, significantly elevates blood ketone levels 30 and 60 min after supplementation and may lower blood pressure. Future explorations should determine the success of KS supplementation as a strategy to combat hypertension.
{"title":"Blood and cardiovascular health parameters after supplementing with ketone salts for six weeks","authors":"A. Holland, A. Qazi, Kristen N. Beasley, H. R. Bennett","doi":"10.4102/JIR.V4I1.47","DOIUrl":"https://doi.org/10.4102/JIR.V4I1.47","url":null,"abstract":"Background: Exogenous ketone salts (KS) have been administered as treatment for various health conditions; however, the safety of chronic supplementation in a healthy population has yet to be explored. Aim: This study examined the safety of KS supplementation for 6 weeks in healthy, young adults and determined the effects of KS on blood ketone levels. Setting: Data collection occurred in a laboratory at Augusta University. Methods: Twenty-three men and women (aged 18–35 years old) supplemented with KS or a placebo (PLA) twice per day for 6 weeks in a randomised, double-blinded, PLA-controlled design. Baseline and post-intervention measures included body mass index (BMI), resting blood pressure and heart rate, questionnaires assessing mood and energy, urinalysis, and venous blood measures, including comprehensive metabolic panel (CMP), lipid panel, and complete blood count (CBC). In addition, the participants consumed the assigned supplement during the baseline and post-intervention visits; blood ketone levels were assessed immediately before and after 30 and 60 min post-supplementation. Results: Systolic blood pressure was significantly lower ( p < 0.05) after supplementing with KS for 6 weeks but not PLA. All other health parameters remained unchanged by KS supplementation, including BMI, resting heart rate, urinalysis, CMP, lipid panel, and CBC. After acute administration of KS but not PLA, blood ketone levels were significantly elevated ( p < 0.001) 30 and 60 min after supplementation at both baseline and post-intervention visits. Conclusion: Chronic KS supplementation seems safe, significantly elevates blood ketone levels 30 and 60 min after supplementation and may lower blood pressure. Future explorations should determine the success of KS supplementation as a strategy to combat hypertension.","PeriodicalId":32155,"journal":{"name":"Journal of Insulin Resistance","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43889254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Crofts, Mark C. Wheldon, C. Zinn, F. Merien, G. Schofield
Background: Hyperinsulinaemia is emerging as an independent risk factor for metabolic disease, but diagnostic measures are limited. It is plausible that insulin resistance measures, such as homeostatic model assessment (HOMA) type 2 variants, may model hyperinsulinaemia, but repeatability data are limited. Kraft and Hayashi insulin response patterns may not only add value in diagnosing hyperinsulinaemia, but also lack suitable repeatability data. Aim: The aim of this study was to investigate the repeatability of insulin response patterns, and fasting and dynamic measures of insulin resistance, and to determine whether these latter measures can predict the insulin response pattern. Setting: This study was conducted at Auckland University of Technology Millennium Institute’s sports performance laboratories. Methods: Oral glucose (100 g) tolerance tests were conducted weekly on eight people. Six people completed four tests, while two completed at least two tests. Each test assessed insulin resistance and response patterns. Insulin resistance measures included fasting tests (HOMA2, McAuley Index) and a dynamic test (oral glucose insulin sensitivity [OGIS]). The insulin response patterns were assessed with both Kraft and Hayashi methodologies. Repeatability characteristics of ordinal variables were assessed by Bland and Altman methods, while Fleiss’ κ was applied to categorical variables. Results: Fasting measures of insulin resistance recorded poor repeatability (HOMA2) or poor sensitivity (McAuley Index) compared to the dynamic measure (OGIS). Kraft insulin response patterns were more repeatable compared to Hayashi patterns, based on a combination of Fleiss’ κ (0.290 vs. 0.186,) p -value (0.15 vs. 0.798) and 95% confidence intervals. Conclusions: Both hyperinsulinaemia and insulin resistance should be dynamically assessed with a multi-sampled oral glucose tolerance test. Further investigations are required to confirm a preferred methodology.
背景:高胰岛素血症正在成为代谢性疾病的独立危险因素，但诊断措施有限。胰岛素抵抗测量，如体内平衡模型评估(HOMA) 2型变异，可能模拟高胰岛素血症，但可重复性数据有限。Kraft和Hayashi胰岛素反应模式可能不仅对诊断高胰岛素血症有价值，而且缺乏合适的可重复性数据。目的:本研究的目的是探讨胰岛素反应模式的可重复性，以及胰岛素抵抗的空腹和动态测量，并确定后者是否可以预测胰岛素反应模式。背景:本研究在奥克兰科技大学千禧研究所的运动表现实验室进行。方法:每周对8例患者进行口服葡萄糖(100 g)耐量试验。6人完成了4项测试，2人至少完成了2项测试。每个测试评估胰岛素抵抗和反应模式。胰岛素抵抗测量包括空腹测试(HOMA2, McAuley指数)和动态测试(口服葡萄糖胰岛素敏感性[OGIS])。胰岛素反应模式采用Kraft和Hayashi两种方法进行评估。顺序变量的重复性特征采用Bland和Altman法，分类变量的重复性特征采用Fleiss’k法。结果:与动态测量(OGIS)相比，空腹胰岛素抵抗测量的重复性(HOMA2)或敏感性(McAuley指数)较差。基于Fleiss ' κ (0.290 vs. 0.186) p值(0.15 vs. 0.798)和95%置信区间的组合，Kraft胰岛素反应模式与Hayashi模式相比更具可重复性。结论:高胰岛素血症和胰岛素抵抗均应通过多样本口服糖耐量试验进行动态评估。需要进一步的调查来确认首选的方法。
{"title":"Repeatability characteristics of insulin response patterns and measures of insulin resistance","authors":"C. Crofts, Mark C. Wheldon, C. Zinn, F. Merien, G. Schofield","doi":"10.4102/JIR.V4I1.44","DOIUrl":"https://doi.org/10.4102/JIR.V4I1.44","url":null,"abstract":"Background: Hyperinsulinaemia is emerging as an independent risk factor for metabolic disease, but diagnostic measures are limited. It is plausible that insulin resistance measures, such as homeostatic model assessment (HOMA) type 2 variants, may model hyperinsulinaemia, but repeatability data are limited. Kraft and Hayashi insulin response patterns may not only add value in diagnosing hyperinsulinaemia, but also lack suitable repeatability data. Aim: The aim of this study was to investigate the repeatability of insulin response patterns, and fasting and dynamic measures of insulin resistance, and to determine whether these latter measures can predict the insulin response pattern. Setting: This study was conducted at Auckland University of Technology Millennium Institute’s sports performance laboratories. Methods: Oral glucose (100 g) tolerance tests were conducted weekly on eight people. Six people completed four tests, while two completed at least two tests. Each test assessed insulin resistance and response patterns. Insulin resistance measures included fasting tests (HOMA2, McAuley Index) and a dynamic test (oral glucose insulin sensitivity [OGIS]). The insulin response patterns were assessed with both Kraft and Hayashi methodologies. Repeatability characteristics of ordinal variables were assessed by Bland and Altman methods, while Fleiss’ κ was applied to categorical variables. Results: Fasting measures of insulin resistance recorded poor repeatability (HOMA2) or poor sensitivity (McAuley Index) compared to the dynamic measure (OGIS). Kraft insulin response patterns were more repeatable compared to Hayashi patterns, based on a combination of Fleiss’ κ (0.290 vs. 0.186,) p -value (0.15 vs. 0.798) and 95% confidence intervals. Conclusions: Both hyperinsulinaemia and insulin resistance should be dynamically assessed with a multi-sampled oral glucose tolerance test. Further investigations are required to confirm a preferred methodology.","PeriodicalId":32155,"journal":{"name":"Journal of Insulin Resistance","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41631261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: Medicinal plants have been used for centuries in the management of chronic diseases including diabetes. Aim: The purpose of this study is to evaluate the possible antidiabetic effects and changes in serum amylase activities, body weight and organ weight of tannins from Spondias mombin on streptozotocin-induced diabetic rats. Setting: The study was conducted in the department of Biochemistry, University of Benin, Edo state, Nigeria. Methods: A total of 24 albino Wistar rats were divided into four groups (A through D). Group A served as the normal control. Diabetes was induced in rats of groups B, C and D by single-dose intraperitoneal administration of streptozotocin (65 mg/kg body weight) to overnight-fasted rats. Only rats with fasting blood glucose ≥ 250 mg/dL were used for this study. Isolated tannins (100 mg/kg body weight) were administered to rats of group D only. Blood glucose was monitored on Day 0, Day 3, Day 10 and Day 21. After 21 days experimental period blood samples were collected and used for serum amylase activities. Tissues (liver, pancreas, heart and kidney) were excised out and weighed. Results: Tannins-treated rats showed a significant increase in body weight and serum amylase activity when compared with the diabetic control. Also, a significant decrease in blood glucose level was seen in the tannins-treated rats when compared with the diabetic control. A significant decrease in the weight of the pancreas and a significant increase in the weight of the liver were seen in the diabetic control rats when compared with the tannins-treated groups. Conclusion: Tannins of Spondias mombin have an antidiabetic effect and can restore serum amylase and body weight changes resulting from streptozotocin induction.
{"title":"Changes in organ and body weight, serum amylase and antidiabetic effects of tannins from Spondias mombin on streptozotocin-induced diabetic rats","authors":"N. Eluehike, I. Onoagbe","doi":"10.4102/JIR.V3I1.40","DOIUrl":"https://doi.org/10.4102/JIR.V3I1.40","url":null,"abstract":"Background: Medicinal plants have been used for centuries in the management of chronic diseases including diabetes. Aim: The purpose of this study is to evaluate the possible antidiabetic effects and changes in serum amylase activities, body weight and organ weight of tannins from Spondias mombin on streptozotocin-induced diabetic rats. Setting: The study was conducted in the department of Biochemistry, University of Benin, Edo state, Nigeria. Methods: A total of 24 albino Wistar rats were divided into four groups (A through D). Group A served as the normal control. Diabetes was induced in rats of groups B, C and D by single-dose intraperitoneal administration of streptozotocin (65 mg/kg body weight) to overnight-fasted rats. Only rats with fasting blood glucose ≥ 250 mg/dL were used for this study. Isolated tannins (100 mg/kg body weight) were administered to rats of group D only. Blood glucose was monitored on Day 0, Day 3, Day 10 and Day 21. After 21 days experimental period blood samples were collected and used for serum amylase activities. Tissues (liver, pancreas, heart and kidney) were excised out and weighed. Results: Tannins-treated rats showed a significant increase in body weight and serum amylase activity when compared with the diabetic control. Also, a significant decrease in blood glucose level was seen in the tannins-treated rats when compared with the diabetic control. A significant decrease in the weight of the pancreas and a significant increase in the weight of the liver were seen in the diabetic control rats when compared with the tannins-treated groups. Conclusion: Tannins of Spondias mombin have an antidiabetic effect and can restore serum amylase and body weight changes resulting from streptozotocin induction.","PeriodicalId":32155,"journal":{"name":"Journal of Insulin Resistance","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44385831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: Evidence suggests that the overconsumption of added sugars can induce fatty liver disease and insulin resistance. Aim: To propose a hypothesis that added sugars induce copper deficiency which can lead to hepatic iron overload, fatty liver disease, insulin resistance and eventually non-alcoholic steatohepatitis. Setting: On average, the intake of added sugars in humans is higher than levels that have been found to impair copper status in animals. Methods: Narrative review. Results: Fructose-induced copper deficiency may be a leading cause of fatty liver disease and insulin resistance. Conclusion: The reduction in the intake of added sugars may improve copper status and reduce the risk of fatty liver disease and insulin resistance.
{"title":"The fructose–copper connection: Added sugars induce fatty liver and insulin resistance via copper deficiency","authors":"J. DiNicolantonio, Dennis F. Mangan, J. O’Keefe","doi":"10.4102/JIR.V3I1.43","DOIUrl":"https://doi.org/10.4102/JIR.V3I1.43","url":null,"abstract":"Background: Evidence suggests that the overconsumption of added sugars can induce fatty liver disease and insulin resistance. Aim: To propose a hypothesis that added sugars induce copper deficiency which can lead to hepatic iron overload, fatty liver disease, insulin resistance and eventually non-alcoholic steatohepatitis. Setting: On average, the intake of added sugars in humans is higher than levels that have been found to impair copper status in animals. Methods: Narrative review. Results: Fructose-induced copper deficiency may be a leading cause of fatty liver disease and insulin resistance. Conclusion: The reduction in the intake of added sugars may improve copper status and reduce the risk of fatty liver disease and insulin resistance.","PeriodicalId":32155,"journal":{"name":"Journal of Insulin Resistance","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45170199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Zinn, O. Schmiedel, J. McPhee, N. Harris, M. Williden, Mark C. Wheldon, D. Stride, G. Schofield
Background: Childhood obesity is a global health concern. Conventional nutrition guidelines have come under scrutiny in helping to achieve long-term healthy weight. An alternative carbohydrate-restricted, higher fat approach has shown to be effective in adults, but research is limited in youth. Aim: To assess the feasibility of a 12-week whole-food, carbohydrate-restricted diet on weight loss and metabolic health. Setting: Overweight children aged 8–13 years. Methods: In this single-arm study, 25 overweight children were provided with whole-food, carbohydrate-restricted dietary guidelines. Primary outcomes – dietary acceptability, adherence and affordability – were assessed qualitatively weekly (telephone) and post-intervention (focus groups). Secondary outcomes – Body mass index (BMI), waist circumference, lipids and glycaemic control measures – were assessed at 0 and 12 weeks. Change scores were analysed using the t-statistic and interpreted using the statistical significance threshold, p < 0.05. Results: Overall, dietary acceptability was mostly positive, and reports of affordability by parents were mixed. Attrition rates were high (48%); adherence was influenced, positively and negatively, by levels of support from friends and family. Completing children reduced BMI by 2.1 ± 1.5 kg.m2 (p < 0.05). Key blood parameter changes included a reduction in triglycerides (−0.17 ± 0.48 mmol/L; p = 0.242) and an increase in high-density lipoprotein (HDL) cholesterol (0.24 ± 0.19 mmol/L; p < 0.05). Conclusion: Children achieved some weight loss and health outcome success using this dietary approach. For sustainable weight loss maintenance, full family and health professional support, particularly on a more intensive level at the start, may be required.
{"title":"A 12-week, whole-food carbohydrate-restricted feasibility study in overweight children","authors":"C. Zinn, O. Schmiedel, J. McPhee, N. Harris, M. Williden, Mark C. Wheldon, D. Stride, G. Schofield","doi":"10.4102/JIR.V3I1.42","DOIUrl":"https://doi.org/10.4102/JIR.V3I1.42","url":null,"abstract":"Background: Childhood obesity is a global health concern. Conventional nutrition guidelines have come under scrutiny in helping to achieve long-term healthy weight. An alternative carbohydrate-restricted, higher fat approach has shown to be effective in adults, but research is limited in youth. Aim: To assess the feasibility of a 12-week whole-food, carbohydrate-restricted diet on weight loss and metabolic health. Setting: Overweight children aged 8–13 years. Methods: In this single-arm study, 25 overweight children were provided with whole-food, carbohydrate-restricted dietary guidelines. Primary outcomes – dietary acceptability, adherence and affordability – were assessed qualitatively weekly (telephone) and post-intervention (focus groups). Secondary outcomes – Body mass index (BMI), waist circumference, lipids and glycaemic control measures – were assessed at 0 and 12 weeks. Change scores were analysed using the t-statistic and interpreted using the statistical significance threshold, p < 0.05. Results: Overall, dietary acceptability was mostly positive, and reports of affordability by parents were mixed. Attrition rates were high (48%); adherence was influenced, positively and negatively, by levels of support from friends and family. Completing children reduced BMI by 2.1 ± 1.5 kg.m2 (p < 0.05). Key blood parameter changes included a reduction in triglycerides (−0.17 ± 0.48 mmol/L; p = 0.242) and an increase in high-density lipoprotein (HDL) cholesterol (0.24 ± 0.19 mmol/L; p < 0.05). Conclusion: Children achieved some weight loss and health outcome success using this dietary approach. For sustainable weight loss maintenance, full family and health professional support, particularly on a more intensive level at the start, may be required.","PeriodicalId":32155,"journal":{"name":"Journal of Insulin Resistance","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46608245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: The WHO defined ‘diabetes mellitus’ (DM) as a metabolic disorder characterised by chronic hyperglycaemia with disturbances of carbohydrate, fat and protein metabolism resulting from the defect in insulin secretion, or inaction, or both. When not identified early and controlled, acute and chronic life-threatening consequences may result. Identifying DM early for treatment and management, as well as clinically monitoring recovery and improvement during treatment, involves the assessments of biomarkers. The types, choice, sensitivity and descriptive information trends of these biomarkers are very important. Aim: Some prognostic biomarkers and parameters that this review identified include glycated haemoglobin, white blood cells, mean neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, total leukocytes and neutrophils, plasma low-density lipoprotein, high-density lipoprotein and very low-density lipoprotein, platelet, fibrinogen, D-dimer and C-reactive proteins. Results: These parameters display increases in DM, while red blood cell, haemoglobin concentration, activated partial thromboplastin time, prothrombin time and partial thromboplastin time are decreased. Conclusion: With sound knowledge of the variations of these markers and parameters, observed reversal during treatment and management of DM and its complications can be better monitored, and guided decisions can be made.
{"title":"Diabetes mellitus: A review of some of the prognostic markers of response to treatment and management","authors":"K. Agu","doi":"10.4102/JIR.V3I1.36","DOIUrl":"https://doi.org/10.4102/JIR.V3I1.36","url":null,"abstract":"Background: The WHO defined ‘diabetes mellitus’ (DM) as a metabolic disorder characterised by chronic hyperglycaemia with disturbances of carbohydrate, fat and protein metabolism resulting from the defect in insulin secretion, or inaction, or both. When not identified early and controlled, acute and chronic life-threatening consequences may result. Identifying DM early for treatment and management, as well as clinically monitoring recovery and improvement during treatment, involves the assessments of biomarkers. The types, choice, sensitivity and descriptive information trends of these biomarkers are very important. Aim: Some prognostic biomarkers and parameters that this review identified include glycated haemoglobin, white blood cells, mean neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, total leukocytes and neutrophils, plasma low-density lipoprotein, high-density lipoprotein and very low-density lipoprotein, platelet, fibrinogen, D-dimer and C-reactive proteins. Results: These parameters display increases in DM, while red blood cell, haemoglobin concentration, activated partial thromboplastin time, prothrombin time and partial thromboplastin time are decreased. Conclusion: With sound knowledge of the variations of these markers and parameters, observed reversal during treatment and management of DM and its complications can be better monitored, and guided decisions can be made.","PeriodicalId":32155,"journal":{"name":"Journal of Insulin Resistance","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44055579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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