Correlation analysis of serum lipids, HbA1C levels and insulin resistance in obese type 2 diabetes patients / 公共卫生与预防医学

Objective To investigate the changes of blood lipid and glycosylated hemoglobin (HbA1c) levels in obese type 2 diabetes (T2DM) patients and their relationship with insulin resistance (Homa-IR). Methods A total of 120 cases of T2DM newly diagnosed in Motuo County, Tibet from February to October 2022 were selected as the observation group. According to BMI, the patients were divided into diabetes normal weight group (46 cases), overweight group (43 cases) and obesity group (31 cases); 145 healthy subjects were selected as the control group. The levels of HbA1c, fasting blood glucose (FPG), fasting insulin (FINS), serum total cholesterol (TC), triglycerides (TG), high-density lipoprotein (HDL-C), and low-density lipoprotein (LDL-C) were detected in the study subjects, and Homa-IR and Homa-β indices were calculated. The height, weight, and abdominal circumference were measured. The differences in the levels of the above indicators between the observation group patients and the control group, as well as among various subgroups within the observation group were compared. The influencing factors of Homa-IR in obese T2DM patients were analyzed. Results Compared with the control group, a significant increase in BMI, abdominal circumference, blood pressure, HbA1c, FBG, FINS, TC, TG, LDL-C, UA, visceral fat area, and the levels of Home-IR and Home-β was found in the observation group (all P<0.05). There were significant differences in BMI, abdominal circumference, and the levels of FINS, Homa IR, Homa-β, and HbA1c in diabetes patients with different BMI (all P<0.05). Correlation analysis showed that TG levels in obese T2DM patients in the observation group were significantly correlated with HbA1c (r=0.396, P=0.027), Homa-IR (r=0.405, P=0.024), and Home-β (r=-0.401, P=0.025); LDL-C was significantly correlated with Homa-IR (r=0.411, P=0.022) and Homa-β (r=-0.412, P=0.021); HbA1c was significantly positively correlated with BMI (r=0.371, P=0.040). Conclusion Insulin resistance is closely related to TG, LDL-C, and BMI in obese T2DM patients from the Motuo ethnic minority of Tibet, suggesting that these factors may play a role in the occurrence of T2DM.

Efectos del entrenamiento de la fuerza en personas con diabetes mellitus tipo II: revisión sistemática / Effects of resistance training in people with Type II diabetes mellitus: systematic review / Efeitos do treinamento de resistência em pessoas com diabetes mellitus tipo II. revisão sistemática

El presente artículo busca analizar las evidencias aportadas del entrenamiento de la fuerza comprobando su influencia en la Diabetes Mellitus tipo II utilizando la literatura existente sobre este objeto de estudio. Se realizo una revisión sistemática siguiendo las directrices PRISMA donde el principal contexto fue el entrenamiento de la fuerza en pacientes con Mellitus II, siendo buscados en bases de datos Pubmed, Embase y Scopus donde fueron seleccionados 7 artículos. Los hallazgos señalan consistentemente que el entrenamiento de la fuerza bien programado incide gradualmente en algunos marcadores que identifican la diabetes Mellitus II al realizar intervenciones con sistemas de entrenamiento de la fuerza de forma positiva. Los autores recomiendan estudios con muestras mayores en lo posible de tipo control para verificar la incidencia del entrenamiento en las variables mencionadas en este estudio.

This Article Seeks analyzes the evidence provided by strength training, verifying its influence on Type II Diabetes Mellitus by using the existing literature on this subject of study. A systematic review was carried out following the PRISMA guidelines, where the main context was strength training in patients with Mellitus II. The search was carried out in Pubmed, Embase, and Scopus databases where 7 articles were selected. The findings consistently indicated that a well-structured strength training program gradually affected some markers that identify diabetes Mellitus II when performing interventions with strength training systems in a positive way. The authors recommend control-type studies with larger samples, if possible, to verify the incidence of training in the variables mentioned in this study.

Este artigo procura analisar as evidências fornecidas pelo treinamento de força, verificando sua influência no Diabetes Mellitus tipo II utilizando a literatura existente sobre este objeto de estudo. Foi realizada uma revisão sistemática seguindo as diretrizes PRISMA onde o principal contexto foi o treinamento de força em pacientes com Mellitus II, sendo pesquisada nas bases de dados Pubmed, Embase e Scopus onde foram selecionados 7 artigos. Os achados indicam consistentemente que o treinamento de força bem programado afeta gradualmente alguns marcadores que identificam o diabetes Mellitus II ao realizar intervenções com sistemas de treinamento de força de forma positiva. Os autores recomendam estudos do tipo controle com amostras maiores, se possível, para verificar a incidência de treinamento nas variáveis mencionadas neste estudo.

Association of insulin resistance and lipid profile with serum T3, T4, and TSH in patients with hypothyroidism

Background: Hypothyroidism is a common endocrine derangement met with in clinical practice. Deficiency of thyroid hormones can have a significant effect on lipid and carbohydrate metabolism. Aims and Objectives: The aim of the study was to study the association of insulin resistance and lipid profile with serum triiodothyronine (T3), tetraiodothyronine (T4), and thyroid-stimulating hormone (TSH) in hypothyroidism. Materials and Methods: A comparative cross-sectional study was conducted in a tertiary care hospital after obtaining clearance from the Institutional Ethics Committee. Thirty primary hypothyroid subjects were selected as cases based on their TSH values (>4 uIU/mL) and thirty normal subjects as controls after proper exclusion and after getting the informed consent. Their fasting plasma glucose levels, lipid profile, and serum T3, T4, TSH were measured. Homeostasis model Assessment using OXFORD HOMA 2 CALCULATOR was used to determine the insulin resistance (HOMA-IR). Results: The mean values of HOMA-IR, total cholesterol, low-density lipoprotein (LDL) cholesterol, and triglycerides were significantly higher in hypothyroid group than in normal controls. HOMA-IR showed a significant negative correlation with T3 and T4. The correlations of HOMA-IR, total cholesterol, LDL cholesterol, and triglycerides with TSH were positive. Conclusion: The present study shows that hypothyroidism leads to an elevated insulin resistance and dyslipidemia.

Variation of Proconvertase 1 and Resistin Gene as Risk Factor for Type II Diabetes Mellitus in Obesity Papua Population

@#Introduction: Risk factors for type 2 diabetes mellitus (T2DM) include obesity and some genetic factors. Obesity involves mild chronic inflammation that predisposes cells to insulin resistance. Two genes that influence obesity and insulin resistance are Proconvertase-1 (PC-1) and resistin (RETN). PC-1 affects the activation of hormones that regulate satiety and hunger. Resistin is one of the inflammatory factors that influence the occurrence of insulin resistance. This study aimed to determine the influence of polymorphism in the PC-1 gene rs1044498 (C>A) and resistin gene RETN + 299 G>A rs3745367 on the risk of diabetes in obese Papua population. Methods: This study involved 58 obese people with T2DM and 58 obese people without DM. We examined the characteristics of blood pressure, lipid profile and insulin resistance by HOMA-IR. The genes examined were PC-1 rs1044498 (C>A) and RETN+ 299 G>A rs3745367 by the PCR-RFLP method. The relationship of gene variations with biochemical parameters was determined with analysis of variance. The results were considered significantly different if P < 0.05. Results: In this study, parameters of diastolic blood pressure, triglycerides and insulin resistance were higher while high density lipoprotein (HDL) levels were lower and significantly different in the obese with T2DM group compared to the obese only group. The carrier of the A allele in the PC-1 gene rs1044498 was higher in the obese group than the obese with T2DM but not significantly different in biochemical parameters. Carrier of the AA genotype in the RETN gene + 299 G>A rs3745367 had higher triglycerides and HOMA-IR and lower HDL levels significantly different (P<0.05) than other genotypes in the obesity with T2DM group. Conclusion: PC-1 rs1044498 gene was a risk factor for obesity but not for T2DM, while RETN gene rs3745367 was a risk factor for dyslipidemia and diabetes in obese people in the Papua population.

Long-term resveratrol administration improves diabetes-induced pancreatic oxidative stress, inflammatory status, and ß cell function in male rats

Abstract Diabetes is a metabolic disorder caused by insulin resistance or a defect in the pancreatic beta cells in insulin secretion. The aim of this study was to evaluate the possible effectiveness of long-term administration of resveratrol on inflammatory and oxidative stress markers in the pancreatic tissue of diabetic rats. Male Wistar rats (n = 24) were randomly divided into four groups of six animals, namely a healthy group, a healthy group receiving resveratrol, a diabetic control group, and a diabetic group receiving resveratrol. Diabetes was induced by single dose injection of streptozotocin (50 mg/kg; ip), 15 min after injection of nicotinamide (110 mg/kg; ip). Resveratrol was also administered by gavage (5 mg/kg/day) for 4 months. Administration of resveratrol alleviated hyperglycemia, weight loss and pancreatic ß cell function measured by HOMA-ß. Resveratrol improved oxidative stress (nitrate/nitrite, 8-isoprostane and glutathione) and proinflammatory markers (tumor necrosis factor α, cyclooxygenase 2, interleukin 6 and nuclear factor kappa B) in the pancreatic tissue of diabetic rats. Resveratrol administration had no significant effect on the activity of superoxide dismutase and catalase enzyme. These observations indicate that resveratrol administration may be effective as a beneficial factor in improving pancreatic function and reducing the complications of diabetes

Familial Clustering of Nonalcoholic Fatty Liver Disease in Family Members of Nonalcoholic Steatohepatitis Cirrhotic Patients

Background and Aim: Non-alcoholic fatty liver disease (NAFLD) is a multifactorial disorder with combination of environmental, genetic and metabolic factors that play role in the progression of disease. This study is aimed to explore the familial clustering of NAFLD among the family members of NASH cirrhotic patients and the association of insulin resistance, metabolic syndrome and genetic polymorphism with the familial clustering. Methods: This cross-sectional observational study included 50 NASH cirrhosis patient and 81 1st degree relatives. Family members were screened for fatty liver by ultrasonogram. Insulin resistance, metabolic syndrome, PNPLA3 and staging of liver stiffness by fibroscan were done. Results: Among 81 family members 47 (58.02%) were found having fatty liver. Of these 14(17.28%) had significant fibrosis. PNPLA3 polymorphism was higher (80.85%) in fatty liver group than (55.9%) without fatty liver groups. Sons (57.89%) and daughters (51.6%) were affected by fatty liver equally. Multivariate logistic regression analysis revealed that a subject with TG>150 mg/dl had 6.159 times increase in odds having NAFLD. A subject with PNPLA3 polymorphism had 3.33 times increase in odds having NAFLD. A subject with HOMA-IR >1.6 had 4.375 times increase in odds having NAFLD. Conclusion: This study indicates that there is a strong familial clustering of NAFLD along with significant fibrosis among the family members of NASH cirrhosis patients. This findings warrants screening for NAFLD among the family members of NASH cirrhosis patients especially with PNPLA3 polymorphism.

Índice HOMA-IR como indicador de riesgo de enfermedades endocrino-metabólicas en niños y adolescentes con obesidad

Resumen La obesidad infantil contribuye a la presencia de Resistencia a la Insulina (IR), lo que a su vez incrementa el riesgo de padecer alteraciones endocrino-metabólicas en la niñez. El HOMA-IR ha demostrado tener gran utilidad para la detección y seguimiento de estas patologías, sin embargo, se deben considerar las variables fisiológicas y patológicas a las que está sujeto su cálculo. Además tiene una buena correlación con el clamp euglucémico para la detección de IR, pero es indispensable marcar puntos de corte específicos para diagnosticar e identificar a los pacientes pediátricos con alto riesgo de Síndrome Metabólico y Diabetes 2, lo que evitaría las complicaciones en la adultez. Objetivo. Es evaluar el HOMA-IR, como indicador de riesgo de enfermedades endocrino-metabólicas en la población pediátrica con obesidad; así como mostrar sus limitaciones y utilidad diagnóstica. Método. Se realizó una revisión sistemática en las bases: Science Direct, Scopus, Scielo y Pubmed; utilizando los descriptores: "Índice HOMA-IR", "Obesidad Infantil" y "Resistencia a la Insulina". La búsqueda se restringió a artículos completos en español, inglés y portugués, entre 2007 y 2020. Se identificaron 3855 artículos, luego de aplicar las fases de análisis, se seleccionaron 10 artículos para la revisión, cada uno con puntos de corte específicos para la población estudiada y su respectiva curva ROC. Conclusión. Se concluyó que el HOMA-IR es un modelo confiable para el diagnóstico de IR temprana en niños, lo que permite una intervención terapéutica preventiva y diagnóstica, es un excelente predictor de enfermedades endocrino-metabólicas y complicaciones cardiovasculares futuras.

Abstract Childhood obesity contributes to the presence of Insulin Resistance (IR), which in turn increases the risk of endocrine-metabolic disorders in childhood. The HOMA-IR has proven to be very useful for the detection and monitoring of these pathologies, however, the physiological and pathological variables to which its calculation is subject must be considered. It also has a good correlation with the euglycemic clamp for the detection of IR, but it is essential to mark specific cut-off points to diagnose and identify pediatric patients at high risk of Metabolic Syndrome and Diabetes 2, which would avoid complications in adulthood. Objective. It is to evaluate the HOMA-IR, as an indicator of risk of endocrine-metabolic diseases in the pediatric population with obesity; as well as showing its limitations and diagnostic utility. Method. A systematic review was carried out in the bases: Science Direct, Scopus, Scielo and Pubmed; using the descriptors: "HOMA-IR Index", "Childhood Obesity" and "Insulin Resistance". The search was restricted to complete articles in Spanish, English and Portuguese, between 2007 and 2020. 3855 articles were identified, after applying the analysis phases, 10 articles were selected for the review, each with specific cut-off points for the population. studied and its respective ROC curve. Conclution. It was concluded that the HOMA-IR is a reliable model for the diagnosis of early IR in children, which allows a preventive and diagnostic therapeutic intervention, it is an excellent predictor of endocrine-metabolic diseases and future cardiovascular complications.

Resumo A obesidade infantil contribui para a presença de Insulin Resistance (IR), que por sua vez aumenta o risco de distúrbios endócrino-metabólicos na infância. O HOMA-IR provou ser muito útil para a detecção e monitoramento destas patologias; entretanto, as variáveis fisiológicas e patológicas às quais seu cálculo está sujeito devem ser levadas em conta. Ela também tem uma boa correlação com a pinça euglycaemic para a detecção de IR, mas é essencial estabelecer pontos de corte específicos para diagnosticar e identificar pacientes pediátricos com alto risco de Síndrome Metabólica e Diabetes 2, o que evitaria complicações na vida adulta. Objetivo. Avaliar o HOMA-IR como um indicador de risco de doenças endócrino-metabólicas na população pediátrica com obesidade, bem como mostrar suas limitações e utilidade diagnóstica. Método. Uma revisão sistemática foi realizada nas seguintes bases de dados: Science Direct, Scopus, Scielo e Pubmed; utilizando os descritores: "HOMA-IR Index", "Childhood Obesity" e "Insulin Resistance". A busca foi restrita a artigos completos em espanhol, inglês e português, entre 2007 e 2020. Um total de 3855 artigos foram identificados, e após a aplicação das fases de análise, 10 artigos foram selecionados para a revisão, cada um com pontos de corte específicos para a população estudada e sua respectiva curva ROC. Conclusão. Concluiu-se que o HOMA-IR é um modelo confiável para o diagnóstico de IR precoce em crianças, permitindo intervenção terapêutica preventiva e diagnóstica, e é um excelente preditor de doenças endocrinometabólicas e futuras complicações cardiovasculares.

Circulating IL-6, clusterin and irisin in obese subjects with different grades of obesity: association with insulin resistance and sexual dimorphism

ABSTRACT Objective: There are discrepancies about the relationship of IL-6, clusterin and irisin with obesity and obesity associated insulin resistance and also about their sexual dimorphism. This study aimed at evaluating the circulating levels of IL-6, clusterin and irisin in obese subjects of both sexes who had different grades of obesity and examining their sexual dimorphism and their association with insulin resistance. Subjects and methods: This study included 176 non-diabetic subjects of both sexes who were classified according to their sex into two groups; the male and the female groups. The male group (88 men) was classified according to BMI into; group 1 (22 lean men), group 2 (22 class I obese men), group 3 (22 class II obese men) and group 4 (22 class III obese men). The female group (88 women) was classified according to BMI exactly as the male group. Metabolic parameters, IL-6, clusterin, and irisin levels were measured. Data were analyzed by ANOVA test, post hoc Tukey's test and independent t-test. Pearson correlation was used to assess the association between variables. Results: In obese subjects of both sexes, circulating IL-6, clusterin and irisin levels were significantly elevated and positively correlated with HOMA-IR. Obese males showed significantly higher HOMA-IR, IL-6, clusterin and irisin levels than obese females. Conclusion: Obesity in both sexes, especially in males was associated with high levels of IL-6, clusterin and irisin and worsened the metabolic pattern. Circulating IL-6, clusterin and irisin may represent possible therapeutic targets for insulin resistance in obese subjects.

Sex differences in the link between blood cobalt concentrations and insulin resistance in adults without diabetes

BACKGROUND@#Little is known about the effects of environmental cobalt exposure on insulin resistance (IR) in the general adult population. We investigated the association between cobalt concentration and IR.@*METHODS@#A total of 1281 subjects aged more than 20 years with complete blood cobalt data were identified from the National Health and Nutrition Examination Survey (NHANES) 2015-2016 cycle. Blood cobalt levels were analyzed for their association with IR among all populations and subgroups by sex. Regression coefficients and 95% confidence intervals (CIs) of blood cobalt concentrations in association with fasting glucose, insulin and homeostatic model assessment of insulin resistance (HOMA-IR) were estimated using multivariate linear regression after adjusting for age, sex, ethnicity, alcohol consumption, body mass index, education level, and household income. A multivariate generalized linear regression analysis was further carried out to explore the association between cobalt exposure and IR.@*RESULTS@#A negative association between blood cobalt concentration (coefficient = - 0.125, 95% CI - 0.234, - 0.015; P = 0.026) and HOMA-IR in female adults in the age- and sex-adjusted model was observed. However, no associations with HOMA-IR, fasting glucose, or insulin were found in the overall population. In the generalized linear models, participants with the lowest cobalt levels had a 2.74% (95% CI 0.04%, 5.50%) increase in HOMA-IR (P for trend = 0.031) compared with subjects with the highest cobalt levels. Restricted cubic spline regression suggested that a non-linear relationship may exist between blood cobalt and HOMA-IR.@*CONCLUSIONS@#These results provide epidemiological evidence that low levels of blood cobalt are negatively associated with HOMA-IR in female adults.

Regulatory Effect of Modified Banxia Xiexintang on Insulin Resistance of Patients with Nonalcoholic Fatty Liver / 中国实验方剂学杂志

Objective:To observe the clinical efficacy of modified Banxia Xiexintang on nonalcoholic fatty liver （NAFLD） and the regulatory effect on insulin resistance （IR）. Method:One hundred and forty patients were randomly divided into control group and observation group. A total of 63 patients in control group completed the therapy （4 patients fell off or were lost to follow-up， 3 were eliminated）， while 65 patients in observation group completed the therapy （5 patients fell off or were lost to follow-up， none was eliminated）. Both groups' patients got lifestyle intervention， liver protection and lipid regulation. Patients in control group got Huazhi Rougan granule， 1 pack/time， 3 times/day. Patients in observation group got modified Banxia Xiexintang， 1 dose/day. And the course of treatment for the two groups was 12 weeks， and a 12 week follow-up was recorded. Before and after treatment and during the follow-up， fat content of liver was recorded by instantaneous elastic recorder， fasting blood glucose （FBG） and fasting insulin （FINS） were detected， and insulin sensitivity index （ISI）， insulin resistance index （HOMA-IR） and islet <italic>β</italic> cell function index （HOMA-<italic>β</italic>） were detected. After treatment， B-mode ultrasonography and ratio of liver/spleen CT were detected. And levels of alanine transaminase （ALT）， aspartate transaminase （AST）， total cholesterol （TC）， triglyceride （TG）， high-density lipoprotein cholesterol （HDL-C）， low-density lipoprotein cholesterol （LDL-C）， adiponectin， leptin， serine protease inhibitor （Vaspin）， tumor necrosis factor （TNF）-<italic>α</italic> and interleukin-6 （IL-6） were detected. And the safety was evaluated. Result:CAP and HOMA-IR in observation group were lower than those in control group after treatment and during the follow-up （<italic>P</italic><0.01）， and ISI and HOMA-<italic>β</italic> were higher than those in control group （<italic>P</italic><0.01）. Amelioration of indexes of blood lipid was better than those in control group （<italic>P</italic><0.01）. Levels of ALT， AST， FBG and FINS were lower than those in control group （<italic>P</italic><0.01）. Scores of traditional Chinese medicine （TCM） syndromes were lower than those in control group （<italic>P</italic><0.01）， ratio of liver/spleen CT and adiponectin was higher than that in control group （<italic>P</italic><0.01）. Levels of TNF-<italic>α</italic>， IL-6， vaspin and leptin were lower than those in control group （<italic>P</italic><0.01）. B-ultrasound efficacy and fat content of liver were superior to those of control group （<italic>P</italic><0.05）. There were no serious adverse events and drug-related adverse reactions. Conclusion:Modified Banxia Xiexintang can regulate glucose and lipid metabolism， improve insulin sensitivity and HOMA-<italic>β</italic> cell function， improve IR， regulate adipocytokines and inflammatory factors， relieve clinical symptoms and liver fat content， and improve CT ratio of liver/spleen， with a better clinical efficacy and safety.

Rate of weight gain and its association with Homeostatic Model Assessment-Insulin Resistance (HOMA-IR) among obese children attending Paediatric Endocrine Clinic, Hospital Universiti Sains Malaysia / Journal of the ASEAN Federation of Endocrine Societies

Objective@#We aimed to study the median time to gain weight from baseline and factors that were associated with rate of weight gain among obese children attending pediatric endocrine clinic Hospital USM.@*Methodology@#We recruited 70 participants with the mean age of 10.1 ± 2.94 years with exogenous or simple form of obesity from June 2019 until September 2020. We analyzed their demography (age, gender, ethnicity, family background), measured their anthropometry (weight, height, BMI) and monitored monthly weight increment and finally analyzed their HOMA-IR at baseline and after 6 months of follow up.@*Results@#The mean time to gain 5 kg from baseline was 16 weeks (95% CI): (15.2, 16.7). Multivariate analysis showed only HOMA-IR after 6 months was a significant predictor affecting time to gain 5 kg; Adjusted HR: (95% CI) 1.617 (1.232, 2.123), (p=0.001). @*Conclusion@#The time to gain 5 kg from baseline weight was increased 1.6 times in the presence of insulin resistance at 6 months follow up in patients with obesity. More intensive education and closed follow-up are recommended for children with obesity.

Tres versiones del "Ogtt Squeezer", un programa para evaluar de un vistazo la información metabólica de la curva de tolerancia a la glucosa / Three versions of the "Ogtt Squeezer", a program to evaluate ataglance the metabolic information of the oral glucose tolerance test

El diagnóstico clínico de resistencia insulínica (RI) es difícil, ya que el Clamp no es aplicable a la clínica. El así llamado "síndrome metabólico", un predictor clínico de la RI, no identifica alrededor de la mitad de los sujetos afectados. Previamente, definimos adecuadamente (Análisis ROC) los niveles de corte diagnóstico de los siguientes predictores bioquímicos: HOMA1, HOMA2, QUICKI e ISI-Composite, a través de analizar datos de 90 sujetos (53 no resistentes y 37 resistentes) que tenían una medición directa de su resistencia insulínica (Test de supresión pancreática, TSP, Test de Reaven) y también, una curva de tolerancia a la glucosa oral (CTG). Los puntos de corte obtenidos exhibieron un mucho mejor desempeño diagnóstico comparados con los puntos de corte convencionales. También encontramos un predictor nuevo, simple, económico y eficiente, el I0*G60. Definimos la "normalidad metabólica" de la CTG usando las medianas de los valores de varios parámetros en 312 sujetos con un G120 dentro de los 2 primeros terciles del grupo de normo-tolerantes a la glucosa (NGT, n=468; G120: 51-110 mg/dL, los con mejor función beta insular). A las medianas de la función beta insular y de la sensibilidad insulínica se les asignó un valor de un 100%. Se calculó el % relativo de función beta insular (%RFBI) y el % relativo de sensibilidad insulínica (%RSI) del resto de la cohorte (n=573) contra estos valores de referencia. El "OGTT Squeezer" se escribió en Excel. Las glicemias y las insulinemias de la CTG fueron las entradas del programa. Las salidas fueron: I0*G60, ISI-OL, QUICKI, and HOMA1 (predictores) y el índice insulinogénico, el índice de disposición, %RFBI y %RSI (parámetros). El programa también caracterizó la tolerancia glucídica de acuerdo a los criterios de la ADA 2003. El formato final del programa, HTML 5, facilita su uso. Desarrollamos tres versiones del programa: completa, abreviada y mínima.

Clinically, diagnosing insulin resistance (IR) is difficult since the Clamp is not applicable to clinical work. The so-called "Metabolic Syndrome", a clinical surrogate of IR, fails to identify around 50% of affected subjects. Previously, we properly defined (ROC Analysis) the diagnostic cut-offs of the following biochemical predictors: HOMA1, HOMA2, QUICKI, and ISI-Composite by analyzing data from 90 subjects (53 non-insulin-resistant and 37 insulin-resistant subjects) who had a direct measurement of insulin resistance (Pancreatic Suppression Test, PST, Reaven's Test), and also, an Oral Glucose Tolerance Test (OGTT). The resulting cut-offs exhibited much better performances compared with the conventional cut-offs. We also found a new, simple, inexpensive and efficient predictor, the I0*G60. We chose to define the "metabolic normalcy" of the OGTT by using the median values of several parameters in 312 NGT subjects with a G120 in the first 2 tertiles of the NGT group (n=468; G120: 51-110 mg/dL, those with the best beta-cell function). The median values of both Beta-Cell Function and Insulin Sensitivity of these subjects were assigned a 100% value. Both % Relative Beta-Cell Function (%RBCF) and % Relative Insulin Sensitivity (%RIS) of everyone else in the cohort (n=573) was calculated against these reference values. The "OGTT Squeezer" was written in Excel. The OGTT's glucose and insulin values served as the inputs of the program. The outputs were: I0*G60, ISI-OL, QUICKI, and HOMA1 (predictors), and Insulinogenic Index, Disposition Index, %RBCF, and %RIS (parameters). Moreover, the program characterized the OGTT according to the ADA 2003 criteria. The HTML 5 format of the program facilitates its use. We developed 3 versions of the program: complete, abbreviated, and minimal versions.

Polycystic ovarian syndrome among adolescent and young women: a hospital based observational study in a tertiary care teaching Hospital

Background: Polycystic ovarian syndrome (PCOS) is one of the most common endocrine disorder among women of fertile age. The incidence of PCOS as claimed by various observer ranges from 2.2% to as high as 26%. India is considered as an emerging epidemic area for PCOS and limited studies are done. Hence aim of this study is to find the prevalence of PCOS and determine the associated determining factors in adolescent girls.Methods: All the girls aged 15-24 years were approached and after undergoing detailed history, examination and investigations were further diagnosed as PCOS. The study subjects were then classified into two group: the PCOS and non-PCOS group and compared to determine significant differences as per the Rotterdam criteria.Results: The prevalence of PCOS was 7.5%, 18.68% and 11.18% as per NIH, Rotterdam and AES criteria respectively. BMI more than 30, waist circumference > 80 cm, hyperandrogenic manifestations, menstrual irregularity (oligomenorrhea) and family history of PCOS and DM showed statistically significant association with PCOS. Serum LH, LH/FSH ratio, S. Testosterones, serum insulin and HOMA-IR had significant association with PCOS. No significant association of Fasting blood sugar levels and deranged lipid profile was found with PCOS.Conclusions: PCOS is an emerging disorder during adolescents and hence awareness creation, early screening in order to inculcate early life style modifications and prevent metabolic and reproductive complications of this disease.

A Study of Insulin Resistance in Rheumatoid Arthritis

Introduction: Chronic activation of the immune system,as observed in the pathogenesis of rheumatoid arthritis,potentially leads to insulin resistance. Insulin resistance is amajor component of type 2 diabetes mellitus and metabolicsyndrome. The risk of myocardial infarction is more thantwice in rheumatoid arthritis cases compared to the generalpopulation. Stratifying those at risk could direct therapies forprevention of significant morbidity and mortality.Material and methods: This is a case-control study of 102cases of Rheumatoid Arthritis diagnosed by ACR/EULAR2010 and a similar number of age and sex-matched healthycontrols. Insulin resistance was calculated using HOMA-IRmodel, those having values greater than 2.5 were consideredinsulin resistant. HOMA-IR values were correlated to diseaseactivity (using the DAS28 score). Blood pressure, BMI, waisthip ratio and lipid profile were compared between the twogroups.Results: 71.6% Rheumatoid Arthritis cases were insulinresistant whereas the same in controls was 21.4%, althoughthe mean BMI was lower in the former (22.78±2.71 vs23.21±3.20). Insulin resistance was more prevalent (69.8%) inthose with high disease activity (DAS28>5.1). Blood pressurewas lower in the control group but the lipid profile was betterin the cases.Conclusion: This study showed that the majority of patientsand 1/5th of the apparently healthy population had insulinresistance. There was significant correlation betweendisease activity and insulin resistance. All those havinginsulin resistance need to be carefully monitored to preventcardiovascular morbidity and mortality

Obesity subtypes, related biomarkers & heterogeneity

Obesity is a serious medical condition worldwide, which needs new approaches and recognized international consensus in treating diseases leading to morbidity. The aim of this review was to examine heterogeneous links among the various phenotypes of obesity in adults. Proteins and associated genes in each group were analysed to differentiate between biomarkers. A variety of terms for classification and characterization within this pathology are currently in use; however, there is no clear consensus in terminology. The most significant groups reviewed include metabolically healthy obese, metabolically abnormal obese, metabolically abnormal, normal weight and sarcopenic obese. These phenotypes do not define particular genotypes or epigenetic gene regulation, or proteins related to inflammation. There are many other genes linked to obesity, though the value of screening all of those for diagnosis has low predictive results, as there are no significant biomarkers. It is important to establish a consensus in the terminology used and the characteristics attributed to obesity subtypes. The identification of specific molecular biomarkers is also required for better diagnosis in subtypes of obesity.

Adiponectin, anthropometric measurements and insulin resistance in adolescence with obesity

@#Introduction: Obesity in adolescents can cause metabolic syndrome. Insulin resistance increases the risk of metabolic syndrome, which then increases the risk of premature death. Studies about anthropometric measurements and adiponectin levels as early markers of insulin resistance in obese adolescents are still limited. Methods: A cross-sectional study was performed on 59 obese adolescents aged 13–16 years. Obesity was established on the basis of the Centers for Disease Control and Prevention (CDC) curve (2000). Insulin and blood glucose level measurements were carried out using an enzymatic kit. Adiponectin levels were assayed using enzyme-linked immunosorbent assay (ELISA). The relationships between variables were evaluated by correlation analysis using SPSS. Results: Statistical tests showed a positive correlation between waist circumference (r=0.421; p=0.001) and Homeostatic Model Assessment of Insulin Resistance (HOMA-IR) (r=0.396; p=0.002). Waist-to-hip ratio (WHR) and waist-to-height ratio (WHtR) had a weak positive correlation with insulin (r=0.343; p=0.008 and r=0.311; p=0.017) and HOMA-IR (r=0.306; p=0.018). There was a weak negative correlation between adiponectin and insulin in obese adolescents (r=-0.278; p=0.033). Conclusion: Anthropometric measurements (waist circumference, WHR and WHtR) and adiponectin can be used for early detection of insulin resistance and hyperinsulinemia in obese adolescents.

Correlation study between Erythrocyte Acetylcholinesterase activity, Serum Malondialdehyde and Insulin sensitivity in Agricultural workers and non-agricultural workers in Nat-Kan Village, Magway Township / Journal of the ASEAN Federation of Endocrine Societies

Objective@#This study determined the correlation between erythrocyte acetylcholinesterase (AChE) activity, serum malondialdehyde (MDA) and insulin sensitivity in agricultural workers and non-agricultural workers.@*Methodology@#The cross-sectional comparative study was undertaken in 45 agricultural and 45 non-agricultural workers from Nat-Kan Village, Magway Township. Erythrocyte acetylcholinesterase activity and serum malondialdehyde were measured by spectrophotometric method. Insulin sensitivity was calculated by homeostasis model assessment (HOMA-IR).@*Results@#Mean erythrocyte AChE activity was significantly lower in agricultural (3553.99 IU/L) compared with non-agricultural workers (4432.68 IU/L) (p<0.001). A significant high level of mean serum MDA was observed in agricultural workers (0.74 versus 0.28 μmol/L, p<0.001). Median HOMA-IR value was significantly higher in agricultural (2.74) than that of non-agricultural workers (2.28) (p<0.05). The risk of insulin resistance was 2.8 times greater in agricultural workers than non-agricultural workers (OR 2.8, 95% CI, 1.18 to 6.72). Erythrocyte AChE activity had weak negative correlation with serum MDA level (r=-0.357, p<0.001) and HOMA-IR (ρ= -0.305, p<0.05). There was a significant but weak positive correlation between serum MDA level and HOMA-IR (ρ=0.355, p<0.001).@*Conclusion@#Organophosphate pesticide exposure lowered erythrocyte AChE activity and increased oxidative stress. Oxidative stress is partly attributed to the development of insulin resistance

Effects of total iridoid glycosides of Picrorhiza scrophulariiflora against non-alcoholic steatohepatitis rats induced by high-fat and high-sugar diet through regulation of lipid metabolism / 中草药·英文版

Objective: To investigate the therapeutic effect of total iridoid glycosides of Picrorhiza scrophulariiflora (TIGP) on non-alcoholic steatohepatitis (NASH). Methods: SD rats were fed with high-fat and high-sugar diet for 8 weeks to establish NASH. TIGP were given orally at doses of 20, 40 and 80 mg/kg/d for 4 weeks. Triglycerides assay (TG), total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), aspartate aminotransferase (AST), alanine aminotransferase (ALT), fasting plasma glucose (FPG), fasting insulin (FINS), tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), chemokine-1 (MCP-1), leptin (LEP) in serum were tested. TG, TC, superoxide dismutase (SOD), malondialdehyde (MDA), and free fatty acid (FFA) in liver tissue were determined by colorimetric methods. Steatosis of hepatocytes and inflammation was performed by pathological examination. Results: The results showed that TIGP significantly decreased TC, TG and FFA in liver tissue, increased SOD activity, decreased MDA content, decreased serum levels of TG, TC, HDL-C/LDL-C, ALT, AST, GLU, HOMA-IR, TNF-α and LEP, and in addition, improved steatosis of liver cells compared to NASH. Conclusion: TIGP had anti-fatty liver effect against NASH rats induced by high-fat and high-sugar diet. Its mechanism was related to the regulation of lipid metabolism and reduction of insulin resistance, through inhibition of oxidative stress and inflammation.

Comparison of insulin resistance scoring system with indirect methods of estimating insulin resistance in Indian type 2 diabetes subjects

Background: Identification of insulin resistance is very important in management of type 2 diabetes. The euglycemic insulin clamp method, intravenous glucose tolerance tests (IVGTT) and minimal model approximation of glucose (MMAMG) are standard methods of measurement of insulin resistance in research. However, they are impractical in clinical practice and are difficult to perform in population-based research studies. So, a simple scoring system was designed to estimate the insulin resistance. Methods: 200 type 2 diabetes individuals who attended Karnataka Institute of endocrinology and research outpatient department. Fasting plasma glucose, post prandial plasma glucose, fasting insulin, lipid profile, BMI, waist circumference and BP of these subjects were checked. Results: Out of 200 type 2 diabetes subjects 69.5% were males and age group ranging from 26 to 85 years. Duration of diabetes range from 0 to 20 years and 53% of patients had hypertension and 46.5% have hypertriglyceridemia. Insulin resistance calculated by KIER scoring system, HOMA-1, QUICKI, HOMA2 and Fasting Insulin was present in 82%, 63%, 63.5%, 33.5% and 37.5% 0f individuals respectively. KIER scoring system had a statistically significant correlation with HOMA and QUICKY indices. (P value < 0.001) Conclusions: (1) KIER scoring system detects insulin resistance in 82% of type 2 diabetes individuals. (2) HOMA 1 and QUICKI are identical and similarly HOMA 2 and fasting insulin levels are almost identical in estimation of insulin resistance. (3) The KIER scoring system designed is very simple and economical. It takes into consideration the different factors which contribute to insulin resistance.

Prevalence of Insulin Resistance among Cigarette Smokers in Sokoto Metropolis

Introduction: Cigarette smoking (CS) is a well-known risk factor for the development of metabolic diseases, various forms of cancer as well as insulin resistance (IR). IR is considered as an underlying derangement which very commonly aggravates metabolic syndrome. Aim: This study assessed the prevalence of IR in cigarette smokers in Sokoto metropolis using selected surrogate markers. Methodology: This cross sectional study was conducted in Sokoto among 108 subjects. Fasting venous blood samples were collected for plasma glucose, triglycerides and insulin estimation. Plasma glucose and serum triglycerides were analysed using enzymatic methods while insulin was assayed using ELISA method. Homeostasis model of assessment-IR (HOMA-IR), Quantitative insulin sensitivity check index (QUICKI), Mc Auley (McA) and fasting IR index (FIRI) were calculated using standard formula and IR cut-off of >2.5, <0.339, >5.8 and >2.3 respectively were used. Results: Based on the cut off mark, the prevalence of IR for HOMA-IR, QUICKI, McA, FIRI indices were 62(57.4%), 66(61.1%), 39(36.1%) and 60(55.6%) respectively. There was a significant correlation between HOMA-IR and FIRI (p< 0.05, r = 0.999). HOMA-IR also had a significant correlation with McA (p<0.05 r = -0.506). QUICKI had a significant correlation with McA (p<0.05 and r = 0.243). Conclusion: This study established a significantly high prevalence of IR among CS. Importantly, it can be concluded that cigarette smokers may be predisposed to the development of metabolic disease.