scholarly journals SORLA is required for insulin-induced expansion of the adipocyte precursor pool in visceral fat

2021 ◽  
Vol 220 (12) ◽  
Author(s):  
Vanessa Schmidt ◽  
Carla Horváth ◽  
Hua Dong ◽  
Matthias Blüher ◽  
Per Qvist ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Adult Life ◽  
Visceral Obesity ◽  
Precursor Cell ◽  
Proliferative Capacity ◽  
Cell Type ◽  
Precursor Pool ◽  
Subcutaneous White Adipose Tissue ◽  
Cell Pool ◽  
Visceral Adipose

Visceral adipose tissue shows remarkable plasticity, constantly replacing mature adipocytes from an inherent pool of adipocyte precursors. The number of precursors is set in the juvenile organism and remains constant in adult life. Which signals drive precursor pool expansion in juveniles and why they operate in visceral but not in subcutaneous white adipose tissue (WAT) are unclear. Using mouse models, we identified the insulin-sensitizing receptor SORLA as a molecular factor explaining the distinct proliferative capacity of visceral WAT. High levels of SORLA activity in precursors of juvenile visceral WAT prime these cells for nutritional stimuli provided through insulin, promoting mitotic expansion of the visceral precursor cell pool in overfed juvenile mice. SORLA activity is low in subcutaneous precursors, blunting their response to insulin and preventing diet-induced proliferation of this cell type. Our findings provide a molecular explanation for the unique proliferative properties of juvenile visceral WAT, and for the genetic association of SORLA with visceral obesity in humans.

scholarly journals Elevated serum uric acid is a facilitating mechanism for insulin resistance mediated accumulation of visceral adipose tissue

2020 ◽  
Author(s):  
Luisa Fernández-Chirino ◽  
Neftali Eduardo Antonio-Villa ◽  
Arsenio Vargas-Vázquez ◽  
Paloma Almeda-Valdés ◽  
Donají Gómez-Velasco ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Adipose Tissue ◽  
Uric Acid ◽  
Serum Uric Acid ◽  
Visceral Adipose Tissue ◽  
Visceral Obesity ◽  
Causal Mechanism ◽  
Mediation Analyses ◽  
Bidirectional Relationship ◽  
Visceral Adipose

BACKGROUND: Serum uric acid (SUA) has a relationship with cardiometabolic conditions such as insulin resistance (IR) and visceral adipose tissue (VAT) accumulation. Here, we aimed to clarify the nature of this relationship and the underlying causality mechanism. METHODS: We conducted a population-based cross-sectional study comprising 8,504 subjects joining both NHANES 2003-2004 and 2011-2012 cycles and ENSANUT Medio Camino 2016. We performed mixed effects linear regression models using HOMA2-IR, adipoIR, and METS-VF as indicators of IR and VAT accumulation. Furthermore, we performed mediation analyses to assess a potential causal mechanism and ROC curves to establish cut-off points for identification of IR and visceral obesity using SUA. Finally, with an additional dataset comprised of 226 subjects with both euglycemic hyperinsulinemic clamp (EHC) and dual X-ray absorptiometry (DXA) measurements for IR and VAT accumulation, we performed a network of confirmatory mediation analyses. RESULTS:We found that SUA has a mediating role inside the bidirectional relationship between IR and visceral obesity, and it is part of an underlying causality mechanism which includes adiponectin. The proportion of the mechanism mediated by SUA is greater when stated that IR (in either peripheral or adipose tissue) leads to VAT accumulation (14.90%[13.20%-17.00%] and 15.54%[13.61% - 18.00%] to 4.88%[3.06%-7.00%] and 8.13%[5.91% - 10.00%]) instead of the opposite direction. This result was confirmed by mediation analyses using gold-standard measurements. CONCLUSIONS:Elevated SUA acts as mediator inside the bidirectional relationship between IR andVAT accumulation. Its role appears to be larger when considering adipose tissue IR as the promoter for VAT accumulation.

Excess fructose intake-induced hypertrophic visceral adipose tissue results from unbalanced precursor cell adipogenic signals

FEBS Journal ◽  
2013 ◽  
Vol 280 (22) ◽  
pp. 5864-5874 ◽  
Author(s):  
María G. Zubiría ◽  
Juan P. Fariña ◽  
Griselda Moreno ◽  
Juan J. Gagliardino ◽  
Eduardo Spinedi ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Visceral Adipose Tissue ◽  
Precursor Cell ◽  
Fructose Intake ◽  
Visceral Adipose

scholarly journals VALIDIZATION OF THE MOST INFORMATIVE TECHNIQUES FOR ULTRASOUND DIAGNOSTICS OF VISCERAL OBESITY

2021 ◽  
Vol 20 (3) ◽  
pp. 46-54
Author(s):  
V.M. Bondarenko ◽  
◽  
S.I. Pimanov ◽  
E.V. Makarenko ◽  
◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Adipose Tissue ◽  
Visceral Obesity ◽  
Anterior Wall ◽  
Ultrasound Elastography ◽  
Boundary Values ◽  
Diagnostic Efficacy ◽  
Ultrasound Diagnostics ◽  
Measuring Techniques ◽  
Visceral Adipose

Objectives. To validate the ultrasound method of diagnosing visceral obesity in patients with cardiovascular diseases and metabolic syndrome. Material and methods. The study involved 115 people aged from 19 to 60 years, who represented a continuous random sample (examination sample). The diagnostic efficacy of shear wave ultrasound elastography of the lower perirenal visceral adipose tissue (VAT) was evaluated in 59 patients. Ultrasound examination was performed on the Logiq E9 ultrasound machine (GE Healthcare, USA); convex 3.5 MHz and linear 10.0 MHz sensors were used. Results. To assess visceral obesity, the following measurements are recommended: the area of the lower perirenal adipose tissue (AT), the distance between the surface of the rectus abdominis muscle and the anterior wall of the aorta, the thickness of the epicardial and pericardial AT, as well as the elastography of the lower part of the perirenal AT. According to the results of the performed validation of ultrasound VAT measuring techniques, the accuracy of visceral obesity diagnosing in patients with arterial hypertension with the use of the boundary values of the lower part perirenal AT area made up 87.8%. The accuracy of visceral obesity diagnosing in patients with coronary heart disease, taking into account the boundary values of the epicardial AT thickness equalled 86.2%, and pericardial AT thickness amounted to 95.4%. Diagnosing of visceral obesity in patients with metabolic syndrome by measuring four ultrasound parameters (area of the lower part of perirenal AT, thickness of intraabdominal AT, epicardial and pericardial VAT) was carried out with an accuracy of 86.1%. Elastic modulus determination during elastography of the lower part of the perirenal AT using the boundary values, established for patients with metabolic syndrome, was performed with an accuracy of 91.5%.

scholarly journals РОЛЬ МАРКЕРА КОСТНОГО РЕМОДЕЛИРОВАНИЯ ОСТЕОКАЛЬЦИНА В РЕГУЛЯЦИИ ЭНЕРГЕТИЧЕСКОГО ГОМЕОСТАЗА ПРИ САХАРНОМ ДИАБЕТЕ 2 ТИПА

World Science ◽  
2020 ◽  
Vol 2 (5(57)) ◽  
pp. 20-29
Author(s):  
Ковальчук А. В. ◽  
Зиныч О. В. ◽  
Корпачев В. В. ◽  
Кушнарева Н. Н. ◽  
Прибила О. В.
Keyword(s):  
Insulin Resistance ◽  
Type 2 Diabetes ◽  
Adipose Tissue ◽  
Energy Homeostasis ◽  
Visceral Obesity ◽  
Mineral Density ◽  
General Group ◽  
Men And Women ◽  
Visceral Adipose

Osteocalcin (OK) is actively involved in the humoral regulation of energy homeostasis. However, the relationship between the level of OK as a modulator of metabolic processes and constitutional and metabolic features in patients with type 2 diabetes mellitus (DM) of a different gender remains not thoroughly studied.The study included 127 patients with type 2 diabetes ≥ 50 years of age. Of these, 70 were postmenopausal women and 57 men.It was found that in the general group of women, the concentration of OK in the blood serum was significantly higher than in men. The observed difference is due to significantly higher levels of OK in women of the older age group (≥ 60 years) in comparison with men. At the same time, a decrease in bone mineral density (BMD) in the femoral neck was observed in subgroups of men and women aged ≥ 60 years and older, while in the younger subgroups of patients, the BMD of lumbar and femoral zones were close to each other.The relationships between OK levels and adipose tissue parameters, evaluated by calculating the morphological and functional index of visceral obesity (IVO), were investigated. An increase in the OK level in the groups of men and women was accompanied by a decrease in the IVO values. The highest degree of insulin resistance was determined in groups of patients with minimal levels of OK and high IVO, and the lowest values were recorded in patients with high levels of OK and low IVO.The decrease of the blood OK level in patients with type 2 diabetes occurs in parallel with an increase in the degree of insulin resistance and dysfunction of visceral adipose tissue. In this case, IVO is a more accurate parameter reflecting the constitutional and metabolic phenotypic changes, compared with the index of the waist circumference. The decrease in BMD in patients with type 2 diabetes is the result of predominantly involutive processes that are noticeable at the age of ≥ 60 years and occur against the background of a decrease in the content of OK with age.

scholarly journals Daily Consumption of Coffee and Eating Bread at Breakfast Time Is Associated with Lower Visceral Adipose Tissue and with Lower Prevalence of Both Visceral Obesity and Metabolic Syndrome in Japanese Populations: A Cross-Sectional Study

Nutrients ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 3090
Author(s):  
Teruhide Koyama ◽  
Mizuho Maekawa ◽  
Etsuko Ozaki ◽  
Nagato Kuriyama ◽  
Ritei Uehara
Keyword(s):  
Metabolic Syndrome ◽  
Adipose Tissue ◽  
Green Tea ◽  
Visceral Adipose Tissue ◽  
Coffee Consumption ◽  
Visceral Obesity ◽  
Tea Consumption ◽  
Daily Consumption ◽  
Cross Sectional ◽  
Visceral Adipose

Background: The study aimed to investigate the association between daily consumption of coffee or green tea, with and without habitual bread consumption for breakfast, and components and prevalence of metabolic syndrome in Japanese populations. Methods: The study population consisted of 3539 participants (1239 males and 2300 females). Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using logistic regression analyses to evaluate the associations of daily coffee and green tea consumption with the prevalence of obesity, visceral obesity, and metabolic syndrome. Results: Coffee consumption was associated with significantly lower proportions of visceral obesity (OR: 0.746, CI: 0.588–0.947) and metabolic syndrome (OR: 0.706, CI: 0.565–0.882). On the other hand, green tea was not associated with visceral obesity (OR: 1.105, CI: 0.885–1.380) or metabolic syndrome (OR: 0.980, CI: 0.796–1.206). The combination of daily drinking coffee and eating bread at breakfast time was associated with significantly lower proportions of obesity (OR: 0.613, CI: 0.500–0.751) (p = 0.911 for interaction), visceral obesity (OR: 0.549, CI: 0.425–0.710) (p = 0.991 for interaction), and metabolic syndrome (OR: 0.586, CI: 0.464–0.741) (p = 0.792 for interaction). Conclusion: Coffee consumption was significantly associated with lower visceral adipose tissue and lower proportions of visceral obesity, but the same was not true for green tea consumption. Furthermore, in combination with coffee consumption, the addition of eating bread at breakfast time significantly lowered proportions of visceral obesity and metabolic syndrome, although there was no interaction between coffee and bread.

Effect of two hypercaloric diets on the hormonal and metabolic profile of the adrenal gland

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mokrani Zoulikha ◽  
Zerrouki Nacira ◽  
Gernigon-Spichalowicz Therese ◽  
Soltani Yacine
Keyword(s):  
Adipose Tissue ◽  
Adrenal Gland ◽  
Metabolic Profile ◽  
Visceral Obesity ◽  
Male Adult ◽  
Diet Induced Obesity ◽  
Calorie Diet ◽  
Visceral Adipose ◽  
High Calorie Diet ◽  
High Calorie

Abstract Objectives Who disrupts who? It is not clear what the interaction is between a high calorie diet (HCD) and adrenal axis activation in obesity. The goal was to assess the effect of two hypercaloric diets commercialized in Algeria on the hormonal and metabolic profile of the adrenal gland in rabbits. Methods Two classes of local male adult rabbits (n=16) and a finishing diet (FD) as a control for 15 weeks. Results It has been shown that HCD-received animals have developed visceral obesity, dyslipidemia and insulin resistance IR by dramatically increasing body weight, visceral fat tissue and adrenal weight, combined with elevated plasma levels of ACTH, cortisol, leptin and insulin. The HCD diet increased the levels of cortisol in the visceral adipose tissue (VAT), in peri-adrenal adipose tissue (PAAT), and decreased cortisol levels in the liver. HCD also causes the process of inflammatory fibrosis associated with the migration and spread of chromaffin cells in the adrenal gland. Conclusions This study gives new insights into how diet-induced obesity studied on local rabbits affects the biology of the adrenal gland. The correlation of these changes with paracrine connections between the chromaffin cell and glomerulosa indicates potential therapeutic methods for obese-related steroid hormone dysfunction.

The levels of adipocyte protein, a transporter of fatty acids, and adiponectin in the adolescents presenting with obesity and their relationship with the distribution of the adipose tissue

2014 ◽  
Vol 60 (2) ◽  
pp. 13-19
Author(s):  
P L Okorokov ◽  
O V Vasyukova ◽  
A V Vorontsov ◽  
A V Ilyin ◽  
V P Vladimirova ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Adipose Tissue ◽  
Visceral Adipose Tissue ◽  
Metabolic Disorders ◽  
Adiponectin Level ◽  
Protein A ◽  
Visceral Obesity ◽  
Serum Adiponectin Level ◽  
Visceral Adipose ◽  
Subcutaneous Adipose

This study included 130 patients at the age of 14-17 years presenting with constitutional exogenous obesity (CEO) and 24 children without obesity (controls). The levels of adipocyte protein, a transporter of fatty acids (FABP4), in the sera of the adolescents with CEO were significantly higher than in the absence of obesity. They did not depend on the stage of puberty and differed in the children of different sex. The serum adiponectin level in the boys showed negative correlation with the amount of visceral adipose tissue and decreased progressively with the increase in the degree of obesity. The rise in the serum FABP4 level in the girls was associated with the increase in the amount of subcutaneous adipose tissue and positively correlated with the severity of obesity. Visceral obesity in the adolescents was accompanied by a variety of metabolic disorders while changes in the waist circumference did not reflect dynamics in the amount of visceral adipose tissue.

scholarly journals Abdominal adipocyte populations in women with visceral obesity

2016 ◽  
Vol 174 (2) ◽  
pp. 227-239 ◽  
Author(s):  
Andréanne Michaud ◽  
Sofia Laforest ◽  
Mélissa Pelletier ◽  
Mélanie Nadeau ◽  
Serge Simard ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Adipose Tissue ◽  
Visceral Adipose Tissue ◽  
Visceral Obesity ◽  
Resistance Index ◽  
Small Cells ◽  
Central Feature ◽  
Model Assessment ◽  
Insulin Resistance Index ◽  
Visceral Adipose

BackgroundVisceral obesity is independently related to numerous cardiometabolic alterations, with adipose tissue dysfunction as a central feature.ObjectiveTo examine whether omental (OM) and subcutaneous (SC) adipocyte size populations in women relate to visceral obesity, cardiometabolic risk factors and adipocyte lipolysis independent of total adiposity.Design and methodsOM and SC fat samples were obtained during gynecological surgery in 60 women (mean age, 46.1±5.9 years; mean BMI, 27.1±4.5 kg/m2(range, 20.3–41.1 kg/m2)). Fresh samples were treated with osmium tetroxide and were analyzed with a Multisizer Coulter. Cell size distributions were computed for each sample with exponential and Gaussian function fits.ResultsComputed tomography-measured visceral fat accumulation was the best predictor of larger cell populations as well as the percentage of small cells in both OM and SC fat (P<0.0001 for all). Accordingly, women with visceral obesity had larger cells in the main population and higher proportion of small adipocytes independent of total adiposity (P≤0.05). Using linear regression analysis, we found that women characterized by larger-than-predicted adipocytes in either OM or SC adipose tissue presented higher visceral adipose tissue area, increased percentage of small cells and homeostasis model assessment insulin resistance index as well as higher OM adipocyte isoproterenol-, forskolin- and dbcAMP-stimulated lipolysis compared to women with smaller-than-predicted adipocytes, independent of total adiposity (P≤0.05).ConclusionExcess visceral adipose tissue accumulation is a strong marker of both adipocyte hypertrophy and increased number of small cells in either fat compartment, which relates to higher insulin resistance index and lipolytic response, independent of total adiposity.

Relationship between visceral obesity and plasma fibrinogen in obese children

2016 ◽  
Vol 29 (3) ◽  
Author(s):  
Mona Hafez ◽  
Sahar El-Masry ◽  
Noha Musa ◽  
Marwa Fathy ◽  
Mona Hassan ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Cardiovascular Risk ◽  
Visceral Adipose Tissue ◽  
Significant Positive Correlation ◽  
Subcutaneous Fat ◽  
Visceral Obesity ◽  
Plasma Fibrinogen ◽  
P Value ◽  
Obese Children ◽  
Visceral Adipose

AbstractThe prevalence of obesity in children and adolescents has increased significantly worldwide with an alarming rise of its co-morbidities. The excess of visceral adipose tissue is associated with hypertension, prothrombotic and pro-inflammatory states. Our aim was to find a possible association between visceral obesity and plasma fibrinogen, as one of the cardiovascular risk factors, in obese children.Forty-three obese children and 40 non-obese controls were studied regarding their history, complete physical examination, anthropometric assessment, body composition analysis, ultrasonographic measurement of visceral adipose tissue and subcutaneous fat as well as laboratory measurement of plasma fibrinogen.Our study revealed significant higher levels of fibrinogen in obese children than controls (14.5+5.1 and 2.9+0.52 mg/mL, respectively) with p-value <0.01. Moreover, the obese group had statistically significant difference in visceral fat (5.96+0.77 cm) and subcutaneous fat (2.66+0.70 cm) than controls (2.45+0.65 and 0.70+0.18 mg/mL, respectively) with p-value <0.01. In addition, fibrinogen had significant positive correlation with body mass index (r=0.327), waist/hip ratio (r=0.394), fat percentage (r=0.301), visceral adipose tissue (r=0.323) and subcutaneous fat (r=0.301).There was highly significant increase in the fibrinogen level, visceral and subcutaneous abdominal fat in the obese group with insignificant sex differences. Fibrinogen had a significant positive correlation with the different adiposity markers, blood pressure, visceral and subcutaneous fat. Visceral adipose tissue is a stronger predictor for cardiovascular risk compared to subcutaneous fat.

Sign in / Sign up

Export Citation Format

Share Document