scholarly journals Metabolic profiling of visceral adipose tissue from obese subjects with or without metabolic syndrome

2018 ◽  
Vol 475 (5) ◽  
pp. 1019-1035 ◽  
Author(s):  
Eleonora Candi ◽  
Manfredi Tesauro ◽  
Carmine Cardillo ◽  
Anna Maria Lena ◽  
Francesca Schinzari ◽  
...  
Keyword(s):  
Risk Factors ◽  
Mass Spectrometry ◽  
Metabolic Syndrome ◽  
Adipose Tissue ◽  
Visceral Adipose Tissue ◽  
Vascular Complications ◽  
Gas Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry ◽  
Obese Subjects ◽  
Visceral Adipose

Obesity represents one of the most complex public health challenges and has recently reached epidemic proportions. Obesity is also considered to be primarily responsible for the rising prevalence of metabolic syndrome, defined as the coexistence in the same individual of several risk factors for atherosclerosis, including dyslipidemia, hypertension and hyperglycemia, as well as for cancer. Additionally, the presence of three of the five risk factors (abdominal obesity, low high-density lipoprotein cholesterol, high triglycerides, high fasting glucose and high blood pressure) characterizes metabolic syndrome, which has serious clinical consequences. The current study was conducted in order to identify metabolic differences in visceral adipose tissue (VAT) collected from obese (body mass index 43–48) human subjects who were diagnosed with metabolic syndrome, obese individuals who were metabolically healthy and nonobese healthy controls. Extensive gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/mass spectrometry (LC/MS/MS) analyses were used to obtain the untargeted VAT metabolomic profiles of 481 metabolites belonging to all biochemical pathways. Our results indicated consistent increases in oxidative stress markers from the pathologically obese samples in addition to subtle markers of elevated glucose levels that may be consistent with metabolic syndrome. In the tissue derived from the pathologically obese subjects, there were significantly elevated levels of plasmalogens, which may be increased in response to oxidative changes in addition to changes in glycerolphosphorylcholine, glycerolphosphorylethanolamine glycerolphosphorylserine, ceramides and sphingolipids. These data could be potentially helpful for recognizing new pathways that underlie the metabolic–vascular complications of obesity and may lead to the development of innovative targeted therapies.

scholarly journals Cut-Off Points of Visceral Adipose Tissue Associated with Metabolic Syndrome in Military Men

Healthcare ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 886
Author(s):  
Samir Ezequiel da Rosa ◽  
Amina Chain Costa ◽  
Marcos S. R. Fortes ◽  
Runer Augusto Marson ◽  
Edurado Borba Neves ◽  
...  
Keyword(s):  
Risk Factors ◽  
Metabolic Syndrome ◽  
Adipose Tissue ◽  
Visceral Adipose Tissue ◽  
Roc Curve ◽  
Youden Index ◽  
Good Precision ◽  
Biochemical Tests ◽  
Student’S T ◽  
Visceral Adipose

Visceral adipose tissue (VAT) has high metabolic activity and secretes a larger number of adipokines that are related to the inflammatory process. Quantifying VAT could estimate the risk of developing Metabolic Syndrome (MetS). This study was designed to determine the VAT cut-off points assessed by DXA associated with MetS in military men. In total, 270 (37.5 ± 6.9 years) military men from the Brazilian Army (BA) participated in the study. Anthropometric measurements, assessment of body composition by dual X-ray absorptiometry (DXA), hemodynamics and biochemical tests were performed. The Student’s t test, independent samples, Person’s correlation, ROC curve, Youden Index and positive (PPV) and negative predictive value (NPV) were used. The MetS prevalence was 27.4%, which means that 74 (38.0 ± 7.3 years) military men had at least three risk factors of MetS present. The cutoff point of VAT with the highest balance between sensitivity (77.0%) and specificity (69.9%) was 1025.0 cm3 (1086.0 g). An area on the ROC curve was 0.801 (p < 0.000), which was very good precision. VAT ≥ 1025.0 cm3 (1086.0 g) is associated with the risk factors of MetS and is, therefore, a predictor of the disease with good indicators of sensitivity and specificity and a robust indicator of MetS.

scholarly journals The Threshold of Visceral Adipose Tissue Areas Measured With QCT On Cardiometabolic Risk Factors In A Nationwide Study In China

2021 ◽  
Author(s):  
Xiaojuan Zha ◽  
Yanhui Lu ◽  
Yongli Li ◽  
Dong Yan ◽  
Limei Ran ◽  
...  
Keyword(s):  
Risk Factors ◽  
Metabolic Syndrome ◽  
Adipose Tissue ◽  
Visceral Adipose Tissue ◽  
Large Scale ◽  
Cardiometabolic Risk ◽  
Threshold Values ◽  
Men And Women ◽  
Anthropometric Index ◽  
Visceral Adipose

Abstract Background: Abdominal adiposity is associated with increased cardiometabolic risk and visceral adipose tissue (VAT) area obtained from computed tomography (CT) is a key anthropometric index. The present study investigated the VAT criteria on cardiometabolic risk factors in a large-scale nationwide Chinese population.Method: A total of 21,772 adults who underwent a low dose chest CT (LDCT) for lung cancer screening at one of 13 health checkup centers throughout China and had complete ancillary health records were evaluated. Abdominal VAT area at the center of L2 vertebra was measured with Mindways quantitative CT software using the existing LDCT dataset. Relevant anthropometric, serum and blood pressure measurements were obtained from the participants’ records. The VAT distribution of the LDCT cohort was age-adjusted using the Chinese national census. Results: The prevalence of metabolic syndrome based on the Chinese national guidelines was 29.5% and 10.5% in men and women respectively. Using ROC curves, the optimum threshold values for VAT area to identify metabolic syndrome were 213 cm2 in men, and 136 cm2 in women. For participants with VAT area above threshold, the odds ratio (95% confidence interval) for metabolic syndrome was 6.15 (5.65, 6.69) and 9.25 (7.58, 11.4) for men and women respectively. A further analysis of population attributable risk showed that VAT above threshold was significantly associated with an increased risk for metabolic syndrome.Conclusion: In this large-scale nationwide population of China, sex-specific threshold values for VAT area measured by CT were established to identify the risk of metabolic syndrome. VAT area is a key anthropometric index of interventions to control cardiometabolic risk.

scholarly journals Relationship of visceral adipose tissue with surrogate insulin resistance and liver markers in individuals with metabolic syndrome chronic complications

2020 ◽  
Vol 11 ◽  
pp. 204201882095829
Author(s):  
Vanessa Bullón-Vela ◽  
Itziar Abete ◽  
Josep A. Tur ◽  
Jadwiga Konieczna ◽  
Dora Romaguera ◽  
...  
Keyword(s):  
Risk Factors ◽  
Insulin Resistance ◽  
Metabolic Syndrome ◽  
Adipose Tissue ◽  
Fatty Liver ◽  
Visceral Adipose Tissue ◽  
Chronic Complications ◽  
Glutamyl Transferase ◽  
Visceral Adipose ◽  
Receiver Operating

Background: Visceral adipose tissue (VAT) has a hazardous influence on systemic inflammation, insulin resistance and an adverse metabolic profile, which increases the risk of developing non-alcoholic fatty liver disease (NAFLD) and chronic complications of diabetes. In our study we aimed to evaluate the association of VAT and the triglyceride glucose (TyG) as a proxy of insulin resistance surrogated with metabolic and liver risk factors among subjects diagnosed with metabolic syndrome (MetS). Methods: A cross-sectional study was performed including 326 participants with MetS (55–75 years) from the PREDIMED-Plus study. Liver-status markers, VAT and TyG were assessed. Participants were stratified by tertiles according to VAT ( n = 254) and TyG ( n = 326). A receiver operating characteristic curve was used to analyse the efficiency of TyG for VAT. Results: Subjects with greater visceral fat depots showed worse lipid profile, higher homeostatic model assessment for insulin resistance (HOMA-IR), TyG, alanine transaminase (ALT), fibroblast growth factor-21 (FGF-21), fatty liver index (FLI) and hepatic steatosis index (HSI) compared with participants in the first tertile. The multi-adjusted linear-regression analyses indicated that individuals in the third tertile of TyG (>9.1−10.7) had a positive association with HOMA-IR [ β = 3.07 (95% confidence interval (CI) 2.28−3.86; p trend < 0.001)], ALT [ β = 7.43 (95% CI 2.23−12.63; p trend = 0.005)], gamma glutamyl transferase (GGT) [ β = 14.12 (95% CI 3.64−24.61; p trend = 0.008)], FGF-21 [ β = 190.69 (95% CI 93.13−288.25; p trend < 0.001)], FLI [ β = 18.65 (95% CI 14.97−22.23; p trend < 0.001)] and HSI [ β = 3.46 (95% CI, 2.23−4.68; p trend < 0.001)] versus participants from the first tertile. Interestingly, the TyG showed the largest area under the receiver operating curve (AUC) for women (AUC = 0.713; 95% CI 0.62−0.79) compared with men (AUC = 0.570; 95% CI 0.48−0.66). Conclusions: A disrupted VAT enlargement and impairment of TyG are strongly associated with liver status and cardiometabolic risk factors linked with NAFLD in individuals diagnosed with MetS. Moreover, the TyG could be used as a suitable and reliable marker estimator of VAT.

Correction of morphofunctional disorders with grapes polyphenols in rats with experimental metabolic syndrome

2018 ◽  
pp. 43-48
Author(s):  
Ю.И. Шрамко ◽  
А.В. Кубышкин ◽  
А.А. Давыдова ◽  
И.И. Фомочкина ◽  
Л.Л. Алиев ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Adipose Tissue ◽  
Visceral Adipose Tissue ◽  
Normal Structure ◽  
Hepatic Tissue ◽  
Standard Diet ◽  
Grape Polyphenols ◽  
Morphological Studies ◽  
Visceral Adipose ◽  
Experimental Group

Цель работы состояла в изучении влияния полифенолов винограда на органы-мишени при экспериментальном метаболическом синдроме у крыс. Методы. В течение 12 недель полифенолы винограда применялись у крыс линии Вистар. Все крысы находились на стандартном рационе. Животные были разделены на 6 групп: 1-я контрольная получала питьевую воду; 2-я контрольная и все 4 экспериментальные - 2,5% раствор фруктозы в качестве питья. 1-я экспериментальная группа дополнительно получала препарат «Фэнокор» с суммарным содержанием полифенолов 181,53 г/дм, 2-я экспериментальная - виноматериал с суммарным содержанием полифенолов 1,73 г/дм; 3-я экспериментальная - виноматериал с суммарным содержанием полифенолов 4,33 г/дм и 4-я экспериментальная - виноматериал с суммарным содержанием полифенолов 8,58 г/дм. После окончания опыта у крыс проводили морфологические исследования висцеральной жировой ткани, тканей миокарда и печени. Результаты. Анализ результатов показал, что применение полифенольных продуктов переработки винограда в концентрациях 181,53 г/дм при моделировании метаболического синдрома приводило к минимизации морфофункциональных нарушений в висцеральной жировой ткани (уменьшение интенсивности лимфоплазмоцитарной инфильтрации), миокарде (мышечные волокна имели типичное строение и адипоциты между ними встречались лишь очагово) и печени (имелись лишь слабые очаговые дистрофические изменения гепатоцитов). Заключение. Результаты работы свидетельствуют о возможности применения виноматериалов с наибольшей концентрацией полифенолов и препарата «Фэнокор» в коррекции и профилактике поражений при метаболическом синдроме. The aim of this work was to study the effect of grape polyphenols on target organs in rats with experimental metabolic syndrome. Methods. Grape polyphenols were used in Wistar rats for 12 weeks. All rats received a standard diet. The animals were divided into 6 groups: group 1, control, received drinking water; group 2, the second control, and four experimental groups received a 2.5% fructose solution for drinking. The first experimental group additionally received a drug, Fenocor, containing polyphenols at 181.53 g/dm; the second experimental group - wine material containing polyphenols at 1,73 g/dm; the third experimental group - wine material containing polyphenols at 4,33 g/dm; and the fourth experimental group - wine material containing polyphenols at 8,58 g/dm. At the end of experiment, morphological studies of visceral adipose tissue, myocardial tissue, and hepatic tissue were performed. Results. The treatment of rats with experimental metabolic syndrome with grape polyphenolic products at a concentration of 181.53 g/dm minimized morphological and functional disorders in visceral adipose tissue (intensity of lymphoplasmocytic infiltration was decreased), myocardium (muscle fibers had normal structure with only occasional adipocytes between them), and liver (only slight focal degenerative changes were observed in hepatocytes). Conclusion. The study indicated a possibility of using wine materials with the highest concentration of polyphenols and the drug Fenocor for correction and prevention of damages in metabolic syndrome.

scholarly journals Free-amino acid metabolic profiling of visceral adipose tissue from obese subjects

Amino Acids ◽  
2020 ◽  
Vol 52 (8) ◽  
pp. 1125-1137
Author(s):  
M. C. Piro ◽  
M. Tesauro ◽  
A. M. Lena ◽  
P. Gentileschi ◽  
G. Sica ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Amino Acid ◽  
Free Amino Acid ◽  
Visceral Adipose Tissue ◽  
Metabolic Profiling ◽  
Free Amino ◽  
Obese Subjects ◽  
Visceral Adipose

Abstract 17843: Visceral Adipose Tissue Secretion of Adiponectin Decreases with Increased Body Mass Index

Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Lenore R Rengel ◽  
Brittaney Obi ◽  
Jon Gould ◽  
Matthew Goldblatt ◽  
Andrew Kastenmeier ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Visceral Adipose Tissue ◽  
Metabolic Health ◽  
Metabolically Healthy Obese ◽  
Obese Subjects ◽  
Healthy Obese ◽  
Metabolically Healthy ◽  
Visceral Adipose ◽  
Subcutaneous Adipose

Introduction: Peripheral adiposity is associated with better metabolic health and higher plasma adiponectin (ADPN) levels. Since ADPN is secreted mainly by adipose tissue (AT), it is intriguing that higher visceral adipose tissue (VAT) is associated with lower ADPN levels and poor metabolic health. Hypothesis: We hypothesized that various AT depots differ in their ability to secrete ADPN. Methods: Paired AT samples (VAT and subcutaneous adipose tissue (SAT)) were collected from 19 subjects (10 women, 15 obese) undergoing elective abdominal surgery. The samples were cultured and the supernatant was collected after 24 hours. ADPN levels released into the supernatant from VAT and SAT were measured using multiplex methods. Subjects were defined as obese or non-obese (NO) based on BMI > or ≤ 30kg/m2 respectively. Obese subjects were further classified as metabolically unhealthy obese (MUO) or metabolically healthy obese (MHO) based on presence or absence of type 2 diabetes mellitus, hypertension, or cardiovascular disease at the time of surgery. Results: Mean ADPN secretion levels from SAT and VAT were similar in NO subjects (17.3 ± 3.4 vs. 9.8 ± 13.0 ng/mL/mg, p=0.5) whereas the mean ADPN secretion was lower from VAT among obese subjects (15.9 ± 0.8 vs. 4.5 ± 0.2 ng/mL/mg, p=0.0002). ADPN secretion decreased from VAT (r=-0.16) and increased from SAT (r=0.33) with increased BMI (Fig.1). When MHO and MUO were compared, ADPN secretion from VAT in MHO was reduced only slightly (16.1 ± 8.2 vs. 4.0 ± 2.0 ng/mL/mg, p=0.07) whereas ADPN secretion was significantly reduced in MUO (15.9 ± 5.3 vs. 4.7 ± 4.6 ng/mL/mg, p=0.003). Conclusions: Reduced ADPN secretion from VAT in subjects with increasing BMI may explain lower circulating ADPN levels in obese individuals. Higher ADPN production from SAT and the relatively preserved secretion of ADPN from VAT may explain metabolic health in some obese individuals. Futures studies will help identify factors that control ADPN secretion from AT.

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