Vaspin Serum Concentration in Patients with Type 2 Diabetes and Carotid Plaque

Evaluation of vaspin and irisin hormones levels in diabetic rats and relationship with diet

BACKGROUND: Type-2 diabetes with an increasing prevalence is a public health problem. Irisin and vaspin, which are secreted a majority from adipose tissue, are discovered hormones recently, and their effects on diabetes are studied. OBJECTIVE: This study aims to the effects of diet on these hormones levels in diabetic rats. METHODS: In this study, ten-week-old 18 Wistar-Albino rats were divided into three groups randomly. The diabetic group (n = 6) was fed a high-fat diet (HFD). Other rats were divided into two control groups, one of them (n = 6) was fed a control diet (CD), and the other group (n = 6) was fed HFD. The feeding time for all groups was 4 weeks. Streptozotocin (STZ) was used for diabetes induction in rats. RESULTS: At the end of the four weeks, the body weight of the diabetic group decreased significantly. In the diabetic group compared to the control groups, it was observed that besides high fasting blood glucose (FBG), triglyceride, total cholesterol levels, and insulin resistance (HOMA-IR) scores. Vaspin levels were significantly higher in diabetic rats, while irisin levels were similar between groups. Besides, vaspin level correlation with biochemical parameters such as glucose, triglycerides, total cholesterol, and HOMA-IR score was significant. CONCLUSION: In conclusion, this study showed that besides the evidence that vaspine is a hormone associated with diabetes, diet composition could give an opinion about the type-2 diabetes process by looking at hormone levels.

Vaspin in atherosclerotic disease and cardiovascular risk in axial spondyloarthritis: a genetic and serological study

Background

Vaspin is a novel anti-inflammatory adipokine associated with cardiovascular (CV) disease and inflammation in chronic inflammatory conditions different from axial spondyloarthritis (axSpA). Given the high incidence of CV disease (mainly due to accelerated atherosclerosis) exhibited by axSpA patients, we wondered if vaspin could also be a key molecule in this process. However, data on the role of vaspin regarding atherosclerotic disease in the context of axSpA is scarce. For this reason, we aimed to evaluate the implication of vaspin, at the genetic and serological level, in subclinical atherosclerosis and CV risk in axSpA.

Methods

This study included 510 patients diagnosed with axSpA. Carotid ultrasound (US) was performed to evaluate the presence of subclinical atherosclerosis. Three vaspin gene variants (rs2236242, rs7159023, and rs35262691) were genotyped by TaqMan probes. Serum vaspin levels were assessed by enzyme-linked immunosorbent assay. Statistical analysis was performed using STATA® v.11.1.

Results

Serum vaspin levels were significantly higher in female patients than in males and also in obese patients when compared to those with normal weight (p < 0.05). At the genetic level, we disclosed that the minor allele of rs2236242 (A) was associated with lower serum vaspin levels in axSpA, while the rs7159023 minor allele (A) was linked to higher serum levels (p < 0.05). When the three polymorphisms assessed were combined conforming haplotypes, we disclosed that the TGC haplotype related to high serum levels of vaspin (p = 0.01). However, no statistically significant association was observed between vaspin and markers of subclinical atherosclerosis, both at the genetic and serological level.

Conclusions

Our results revealed that vaspin is linked to CV risk factors that may influence on the atherosclerotic process in axSpA. Additionally, we disclosed that serum vaspin concentration is genetically modulated in a large cohort of patients with axSpA.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13075-021-02499-7.

Circulating levels of adipose tissue-derived inflammatory factors in elderly diabetes patients with carotid atherosclerosis: a retrospective study

BACKGROUND

Inflammation has been recognized as a key feature of both type 2 diabetes mellitus (T2DM) and atherosclerosis. However, the relationships between circulating levels of novel adipose tissue-derived inflammatory factors, including resistin, vaspin, and visfatin, and the severity of atherosclerosis have not been determined. Moreover, the associations between these inflammatory factors and obesity and insulin resistance in elderly patients remain to be clarified.

METHODS

A cross-sectional study of 256 elderly patients with T2DM admitted in our center was performed. Baseline circulating levels of resistin, vaspin and visfatin were measured with enzyme-linked immunosorbent assays. Ultrasonic evaluations of the carotid arteries of the patients were performed to reflect the severity of systemic atherosclerosis. Patients were classified as having mild, moderate, or severe atherosclerosis according to the results of carotid ultrasonic examination. Circulating levels of the inflammatory factors listed above also were correlated with body mass index (BMI) and homeostasis model assessment of insulin resistance (HOMA-IR).

RESULTS

With more severe carotid atherosclerosis, circulating levels of resistin (mild: 2.01 ± 0.23; moderate: 2.89 ± 1.01; severe: 3.12 ± 1.12; p < 0.05) and visfatin (mild: 11.63 ± 7.48; moderate: 15.24 ± 2.19; severe: 17.54 ± 2.98; p < 0.05) gradually increased, while level of vaspin decreased (mild: 317 ± 23.12; moderate: 269 ± 32.12; severe: 229 ± 14.24; p < 0.05). Subsequent results of Pearson coefficient analyses indicated that all of the tested adipose tissue-derived inflammatory factors were positively correlated with the BMI and HOMA-IR of the patients (all p < 0.05), even after adjustment for hs-CRP.

CONCLUSIONS

The adipose tissue-derived inflammatory factors resistin, vaspin and visfatin may be involved in the pathogenesis of atherosclerosis in elderly T2DM patients.

Assessment of Serum VASPIN Levels among Type 2 Diabetes Mellitus Patients with or without Acute Coronary Syndrome

INTRODUCTION

Type 2 Diabetes Mellitus (DM) is on the verge of becoming a pandemic in India. Type 2 DM patient have two to four times increased risk of carotid artery disease. Adipokines have been regarded recently as direct link between diabetes and atherosclerosis. Visceral Adipose Tissue Derived Serine Protease Inhibitor (VASPIN); one of the most recently discovered adipokine, inhibits the proteases responsible for insulin resistance, carotid plaque development and rupture. In literature, few studies have addressed the role of VASPIN in pathogenesis of Acute Coronary Syndrome (ACS) in patients with type 2 DM.

AIM

To find association between serum VASPIN with lipid profile, creatine kinase-total, creatine kinase-MB, troponin-I, age, height, weight, blood pressure, smoking, family history of ACS and to prove the hypothesis of low serum VASPIN level as predictor of ACS in patients with type 2 DM.

MATERIALS AND METHODS

Forty-one type 2 DM patients (controls) and 41 type 2 DM patients with ACS (cases) were enrolled in the study. Anthropometric measurements were performed and fasting serum biochemical parameters and VASPIN were measured. The results of cases and controls were compared by student t-test or Mann-Whitney test. All the parameters were correlated with serum VASPIN by Pearson's or Spearman's correlation.

RESULTS

Fasting serum VASPIN concentration was significantly (p< 0.0001) lower in the cases (0.43±0.22 pg/ml) than in the controls (0.83±0.29 pg/ml). Correlation analysis undertaken on all type 2 DM showed that serum VASPIN concentration was negatively correlated with age, waist circumference, hip circumference, systolic and diastolic blood pressure, duration of diabetes, serum Creative Kinase-Total, CK-MB and urea (p< 0.05). Utilizing Receiver Operating Characteristic (ROC) curve, the serum VASPIN level of less than 0.594pg/ml showed greatest risk of ACS among type 2 DM patients (p< 0.0001).

CONCLUSION

Type 2 DM patients with low serum vaspin concentration were at risk of ACS independent of other cardiovascular risk factors.

Association between vaspin level and coronary artery disease in patients with type 2 diabetes

AIM

Adipokines contribute to the atherosclerotic process, connecting obesity and diabetes to cardiovascular disease. Vaspin is a recently discovered adipokine, so data about the relationship of vaspin to coronary artery disease in type-2 diabetes mellitus (T2DM) is limited. The current study was designed to evaluate the association of vaspin with the presence of coronary artery disease in T2DM.

METHODS

We enrolled 228 patients with T2DM, with or without CAD, between March 2010 and July 2011, and 120 healthy control participants. Serum vaspin, homeostasis model assessment of insulin resistance (HOMA-IR) and other cardiovascular risk factors were assayed.

RESULTS

Vaspin levels were significantly increased in patients with T2DM compared to healthy individuals, and were further increased in patients with both T2DM and CAD compared to those with T2DM but without CAD. Moreover, vaspin correlated positively with body mass index, fasting plasma glucose, insulin and HOMA-IR in all patients with T2DM (P<0.05). Furthermore, in multivariate logistic regression analysis, vaspin level was associated with the presence of CAD in patients with T2DM.

CONCLUSIONS

Vaspin correlates with CAD in T2DM.

Is vaspin related to cardio-metabolic status and autonomic function in early stages of glucose intolerance and in metabolic syndrome?

BACKGROUND

This study aims to assess serum vaspin in early stages of glucose intolerance and in the presence of metabolic syndrome (MetS); and to evaluate vaspin correlation to different cardio-metabolic parameters and autonomic tone in these subjects.

METHODS

185 subjects (80 males and 105 females) of mean age 45.8 ± 11.6 years and mean BMI 31.2 ± 6.3 kg/m(2), divided into groups according to: glucose tolerance, presence of MetS and cardio-vascular autonomic dysfunction (CAD), were enrolled. Glucose tolerance was studied during OGTT. Anthropometric indices, blood pressure, HbA1c, serum lipids, hsCRP, fasting immunoreactive insulin and serum vaspin were measured. Body composition was estimated by impedance analysis. AGEs were assessed by skin fluorescence. CAD was assessed by ANX-3.0.

RESULTS

There was no difference in vaspin levels between the groups according to glucose tolerance, presence of MetS, and CAD. Regression analysis revealed independent association between serum vaspin and total body fat in newly diagnosed type 2 diabetes (NDT2D) group, and between serum vaspin and age and total body fat in MetS group. Vaspin negatively correlated with both sympathetic and parasympathetic activity in normal glucose tolerance (NGT) and just with parasympathetic tone in NGT without MetS.

CONCLUSION

Our results demonstrate no overt fluctuations in vaspin levels in the early stages of glucose intolerance and in MetS. Total body fat seems to be related to vaspin levels in MetS and NDT2D. Our data show negative correlation between vaspin and autonomic function in NGT, as vaspin is associated with parasympathetic activity even in the absence of MetS.

The role of vaspin in the development of metabolic and glucose tolerance disorders and atherosclerosis

In recent years, most research efforts have been focused on studying insulin-sensitizing adipokines. One of the most recently discovered adipokines is vaspin, a visceral adipose tissue-derived serine protease inhibitor. Vaspin levels have been found significantly increased in mice with obesity and insulin resistance. It has been assumed that vaspin serves as an insulin sensitizer with anti-inflammatory effects and might act as a compensatory mechanism in response to decreased insulin sensitivity. Most studies in humans have shown a positive correlation between vaspin gene expression and serum levels, and metabolic syndrome parameters. Vaspin gene expression is influenced by age and gender, and the administration of insulin sensitizers enhances it in mice, whereas the use of metformin decreases serum vaspin levels in humans, probably due to different regulatory mechanisms. Presumably vaspin plays local and endocrine role in the development of initial and advanced atherosclerosis in obese subjects and might be used as a predictor of coronary and cerebrovascular disease. It is believed that vaspin could be regarded as a new link between obesity and related metabolic disorders, including glucose intolerance. The entire understanding of vaspin intimate mechanism of action might enable the development of novel etiology-based treatment strategies, targeting metabolic and glucose tolerance disorders.

Higher vaspin levels in subjects with obesity and type 2 diabetes mellitus: a meta-analysis

AIMS

Visceral adipose tissue-derived serpin (vaspin) was identified as a new adipocytokine. Many studies reported vaspin concentrations in obese subjects and type 2 diabetes mellitus (T2DM) patients. However, large variation in levels of vaspin seen in different studies may be attributable to differences of sample size. The aim of this study is to establish an accurate confidence interval of vaspin levels in obese subjects and T2DM patients using a large-scale meta-analysis.

METHODS

Publications of the association between vaspin and obesity and T2DM in the databases of Medline, PubMed and EMBase were collected. The keywords included "vaspin" and "visceral adipose tissue-derived serpin". Review manager 5.0 was used to process the data.

RESULTS

For the analysis of obesity, 6 studies with 1826 participants were included in our meta-analysis; the level of vaspin was 0.52ng/ml [95% confidence interval (CI)](0.10-0.93, P=0.02) higher in obese subjects than that in non-obese healthy controls. Eleven studies with 1570 patients were included for the analysis of T2DM; the level of vaspin was 0.36ng/ml [95%CI] (0.23-0.49, P<0.00001) higher compared with that in healthy controls.

CONCLUSIONS

Significantly higher levels of serum vaspin were observed in obese subjects and T2DM patients.