scholarly journals The Quantitative Insulin Sensitivity Check Index QUICKI Predicts the Onset of Type 2 Diabetes Better Than Fasting Plasma Insulin in Obese Subjects: A 5-Year Follow-Up Study

2002 ◽  
Vol 87 (12) ◽  
pp. 5834-5837 ◽  
Author(s):  
P. Vanhala ◽  
M. Vanhala ◽  
E. Kumpusalo ◽  
S. Keinänen-Kiukaanniemi
2021 ◽  
Author(s):  
Tomoko Okuyama ◽  
Jun Shirakawa ◽  
Takashi Nakamura ◽  
Takayo Murase ◽  
Daisuke Miyashita ◽  
...  

Abstract Xanthine oxidoreductase (XOR) catalyzes the oxidation of hypoxanthine to xanthine, and of xanthine to uric acid. XOR also enhances the production of reactive oxygen species and causes endothelial dysfunction. In this study, we evaluated the association of XOR and its substrate with the vascular complications in 94 Japanese inpatients with type 2 diabetes (T2DM). The plasma XOR activity and plasma xanthine levels were positively correlated with the body mass index, aspartate aminotransferase (AST), alanine aminotransferase (ALT), γ-GTP, fasting plasma insulin, and the homeostasis model of assessment of insulin resistance (HOMA-IR), and negatively correlated with the high density lipoprotein cholesterol. The plasma XOR activity also showed a positive correlation with the serum triglyceride. Multivariate analyses identified AST, ALT, fasting plasma insulin and HOMA-IR as being independently associated with the plasma XOR activity. The plasma XOR activity negatively correlated with the duration of diabetes, and positively correlated with the coefficient of variation of the R-R interval and sensory nerve conduction velocity. Furthermore, the plasma XOR activity was significantly decreased in patients with coronary artery disease. Thus, the plasma XOR activity might be a surrogate marker for the development of vascular complications, as well as liver dysfunction and insulin resistance, in T2DM. Trial registration: This study is registered at the UMIN Clinical Trials Registry (UMIN000029970; https://www.umin.ac.jp/ctr/index-j.htm). The study was conducted from Nov 15, 2017.


2021 ◽  
Author(s):  
Zulfiya Mirzarakhimova ◽  
Bakhodir Narziev ◽  
Akmal Yakubov ◽  
Oybek Salaev ◽  
Ramesh Hamraev ◽  
...  

Abstract Introduction. Atrial fibrillation is an irregular heartbeat that accelerates to form blood clots in the chambers of the heart and leads to stroke, heart failure, and other cardiovascular complications. Diabetes mellitus itself has been identified as a risk factor for atrial fibrillation, but the association between them is unclear. Material and methods. We analyzed 70 patients with type 2 insulin non-dependent diabetes mellitus. All patients were examined in parallel continuous glucose (CGM) and ECG for 14 days. The study population divided into documented atrial fibrillation (AF group, n = 16) and without atrial fibrillation (non-AF group, n = 54) groups. We assessed the relationship between hypoglycemia, fasting plasma insulin, insulin resistance using the homeostatic model assessment (HOMA-IR) equation, and the incidence of atrial fibrillation. Results. We found a total of 46 episodes of documented atrial fibrillation (AF be defined as an arrhythmia lasting ≥ 30 seconds) lasted on the whole 596.9 minute, which was the most significant by the number (2.87 ± 2.05 per patient, p < 0.0001) or the time (31.31 ± 16.57 min per patient, p < 0.0001). We also compared the incident rate of different types of atrial premature complexes between two groups. We found a maximum of 642.6 ± 567.2 single PACs per patient in the AF group, compared to 84.6 ± 87.9, p = 0.002. Despite this, there were significant differences by the following parameters: couplet PACs (p = 0.0015) and triplet or > 3 PACs (p = 0.0007). Over 14 days, a total of 263 hypoglycemic episodes or 5135 min hypoglycemic time were detected, the average number and time of hypoglycemic episodes were 8.0 ± 4.94 per person and 137.0 ± 63.17 min in AF group, and 2.5 ± 4.64 per person (p = 0.0001), 54.5 ± 67.3 min (p = 0.004) in the non-AF group. There was a statistically significant (p < 0.0001) association between FPI and incident AF, more exactly, the mean level of FPI was 31 ± 6.1 mlU/L in the AF group, whereas was 11.3 ± 4.07 in the non-AF group. When we measured the HOMA-IR index by using the homeostasis model, we found significant differences between AF and non-AF groups (11.2 ± 3.88 mmol/l vs. 4.3 ± 1.66 mmol/l, p < 0.0001). Conclusion. The parallel recording of continuous glucose and ECG are necessary to evaluate hypoglycemia-related atrial fibrillation in type 2 diabetes mellitus. Elevated fasting plasma insulin, as well as insulin resistance, are important predictors of atrial fibrillation development, but it needs further studies.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tomoko Okuyama ◽  
Jun Shirakawa ◽  
Takashi Nakamura ◽  
Takayo Murase ◽  
Daisuke Miyashita ◽  
...  

AbstractXanthine oxidoreductase (XOR) catalyzes the oxidation of hypoxanthine to xanthine, and of xanthine to uric acid. XOR also enhances the production of reactive oxygen species and causes endothelial dysfunction. In this study, we evaluated the association of XOR and its substrate with the vascular complications in 94 Japanese inpatients with type 2 diabetes (T2DM). The plasma XOR activity and plasma xanthine levels were positively correlated with the body mass index, aspartate aminotransferase (AST), alanine aminotransferase (ALT), γ-GTP, fasting plasma insulin, and the homeostasis model of assessment of insulin resistance (HOMA-IR), and negatively correlated with the high density lipoprotein cholesterol. The plasma XOR activity also showed a positive correlation with the serum triglyceride. Multivariate analyses identified AST, ALT, fasting plasma insulin and HOMA-IR as being independently associated with the plasma XOR activity. The plasma XOR activity negatively correlated with the duration of diabetes, and positively correlated with the coefficient of variation of the R-R interval and sensory nerve conduction velocity. Furthermore, the plasma XOR activity was significantly decreased in patients with coronary artery disease. Thus, the plasma XOR activity might be a surrogate marker for the development of vascular complications, as well as liver dysfunction and insulin resistance, in T2DM.Trial registration: This study is registered at the UMIN Clinical Trials Registry (UMIN000029970; https://www.umin.ac.jp/ctr/index-j.htm). The study was conducted from Nov 15, 2017.


2020 ◽  
Author(s):  
Tomoko Okuyama ◽  
Jun Shirakawa ◽  
Takashi Nakamura ◽  
Takayo Murase ◽  
Daisuke Miyashita ◽  
...  

Abstract Background Xanthine oxidoreductase (XOR) is a rate-limiting enzyme that catalyzes the oxidation of hypoxanthine to xanthine, and of xanthine to uric acid. XOR also enhances the production of reactive oxygen species (ROS) and causes endothelial dysfunction. To explore the association of XOR and its substrate with the vascular complications in patients with type 2 diabetes mellitus (hereafter simply, diabetes), we measured the plasma XOR activity and plasma levels of xanthine and hypoxanthine in patients with type 2 diabetes. Materials and Methods Plasma XOR activity and the plasma levels of xanthine and hypoxanthine were measured, and their associations with the clinical parameters and vascular complications were investigated in 94 Japanese inpatients with type 2 diabetes. Results Both the plasma XOR activity and plasma xanthine levels were correlated with the serum uric acid level. The plasma XOR activity was correlated with the plasma xanthine level, but not the plasma hypoxanthine level. The plasma XOR activity and plasma xanthine levels were positively correlated with the body mass index (BMI), serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), serum γ-GTP, fasting plasma insulin, and the homeostasis model of assessment of insulin resistance (HOMA-IR), and negatively correlated with the serum high density lipoprotein cholesterol levels (HDL-C). The plasma XOR activity also showed a positive correlation with the serum triglyceride (TG) levels. Plasma xanthine was positively correlated with the Fib4-index. Multivariate analyses identified AST, ALT, fasting plasma insulin and HOMA-IR as being independently associated with the plasma XOR activity. In addition, a negative correlation was observed between the plasma XOR activity and the duration of diabetes, and positive correlations were observed between the plasma XOR activity and the coefficient of variation of the R-R interval (CVR-R) and sensory nerve conduction velocity (SCV). Furthermore, the plasma XOR activity was found to be significantly decreased in patients with coronary artery disease. Conclusions The plasma XOR activity might be a surrogate marker for the development of vascular complications, as well as liver dysfunction and insulin resistance, in patients with type 2 diabetes


2020 ◽  
Author(s):  
Tomoko Okuyama ◽  
Jun Shirakawa ◽  
Takashi Nakamura ◽  
Takayo Murase ◽  
Daisuke Miyashita ◽  
...  

Abstract Xanthine oxidoreductase (XOR) catalyzes the oxidation of hypoxanthine to xanthine, and of xanthine to uric acid. XOR also enhances the production of reactive oxygen species and causes endothelial dysfunction. In this study, we evaluated the association of XOR and its substrate with the vascular complications in 94 Japanese inpatients with type 2 diabetes (T2DM).The plasma XOR activity and plasma xanthine levels were positively correlated with the body mass index, aspartate aminotransferase (AST), alanine aminotransferase (ALT), γ-GTP, fasting plasma insulin, and the homeostasis model of assessment of insulin resistance (HOMA-IR), and negatively correlated with the high density lipoprotein cholesterol. The plasma XOR activity also showed a positive correlation with the serum triglyceride. Multivariate analyses identified AST, ALT, fasting plasma insulin and HOMA-IR as being independently associated with the plasma XOR activity. The plasma XOR activity negatively correlated with the duration of diabetes, and positively correlatted with the coefficient of variation of the R-R interval and sensory nerve conduction velocity. Furthermore, the plasma XOR activity was significantly decreased in patients with coronary artery disease.Thus, the plasma XOR activity might be a surrogate marker for the development of vascular complications, as well as liver dysfunction and insulin resistance, in T2DM.Trial registration: This study is registered at the UMIN Clinical Trials Registry (UMIN000029970; https://www.umin.ac.jp/ctr/index-j.htm). The study was conducted from Nov 15, 2017.


Author(s):  
Sopio Tatulashvili ◽  
Gaelle Gusto ◽  
Beverley Balkau ◽  
Emmanuel Cosson ◽  
Fabrice Bonnet ◽  
...  

Diabetes ◽  
2019 ◽  
Vol 68 (Supplement 1) ◽  
pp. 453-P
Author(s):  
MONIA GAROFOLO ◽  
ELISA GUALDANI ◽  
DANIELA LUCCHESI ◽  
LAURA GIUSTI ◽  
VERONICA SANCHO-BORNEZ ◽  
...  

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