scholarly journals Visceral Adipose Tissue Promotes Pressure-Induced Heart Failure Associated with Circulating Fatty Acids

2020 ◽  
Author(s):  
Wenjiao Shi ◽  
Yuanzhi Peng ◽  
Jianer Du ◽  
Xiaojian Weng
Keyword(s):  
Heart Failure ◽  
Fatty Acids ◽  
Adipose Tissue ◽  
Sham Group ◽  
Arachidic Acid ◽  
Docosapentaenoic Acid ◽  
Behenic Acid ◽  
Heart Tissue ◽  
Left Ventricular ◽  
Visceral Adipose

Abstract Background: Visceral adipose tissue (VAT) is the main source of circulating fatty acids (FAs) that provides the energy substrate for the heart. Till now, studies have not shown a clear association between individual circulating FAs and heart failure (HF). In this study, we aimed to investigate the changes in circulating FAs in HF mice and their association with VAT by removing epididymal white adipose tissue (eWAT).Methods: Male C57BL/6J mice were divided into normal control and eWAT excision groups. Each group was then divided into sham group and HF group. The transverse aortic constriction (TAC) was used to induce pressure-mediated cardiac failure. HE staining and Masson’ staining were used to observe cardiac morphology. Echocardiography was used to determine diastolic left ventricular posterior wall (LVPWd), diastolic left ventricular internal diameter (LVIDd) and fractional shortening (FS%). RT-PCR was used to determine mRNA expression of atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP), MYH7, CTGF, collagen 1 (COL1), COL3A1 in heart tissue of mice. HPLC measurement was used to determine serum level of FAs.Results: Cardiac enlargement and fibrosis were observed after TAC surgery evidenced by increased LVPWd, LVIDd, and increased mRNA expression of ANP, BNP, MYH7, CTGF, COL1, COL3A1 in heart tissue (P<0.05). Among various FAs species, serum arachidic acid (P<0.001), behenic acid (P<0.001), lignoceric acid (P<0.01), and docosapentaenoic acid (P<0.05) levels in HF mice were significantly decreased versus sham group. However, above mentioned four serum fatty acids were significantly decreased in both sham and HF group with eWAT excision compared with eWAT reserved. In addition, the changes accompanied by LVPWd significantly decreased and FS% significantly increased.Conclusion: Serum arachidic acid, behenic acid, lignoceric acid, and docosapentaenoic acid levels were significantly decreased in pressure-induced HF mice, most importantly, VAT excision alleviated TAC-induced cardiac failure by decreasing these four kinds of fatty acids levels.

scholarly journals Visceral Adipose Tissue Promotes Pressure-Induced Heart Failure Associated with Circulating Fatty Acids

2020 ◽  
Author(s):  
Wenjiao Shi ◽  
Yuanzhi Peng ◽  
Jianer Du ◽  
Xiaojian Weng
Keyword(s):  
Heart Failure ◽  
Fatty Acids ◽  
Adipose Tissue ◽  
Visceral Adipose Tissue ◽  
Arachidic Acid ◽  
Docosapentaenoic Acid ◽  
Behenic Acid ◽  
Lignoceric Acid ◽  
Visceral Adipose ◽  
Cardiac Enlargement

Abstract Visceral adipose tissue (VAT) is the main source of circulating fatty acids (FAs) that provides the energy substrate for the heart. Till now, studies have not shown a clear association between individual circulating FAs and heart failure (HF). In this study, we aimed to investigate the changes in circulating FAs in HF mice and their association with VAT by removing epididymal white adipose tissue (eWAT). Here, we found that the serum levels of four fatty acids, namely arachidic acid, behenic acid, lignoceric acid, and docosapentaenoic acid, were significantly decreased in pressure-induced HF mice via transverse aortic constriction (TAC) surgery accompanied with cardiac enlargement and fibrosis. Most importantly, removal of eWAT in mice led to a significant decrease in the levels of the above-mentioned fatty acids without any significant difference between the HF and sham groups. Accordingly, cardiac enlargement and fibrosis were significantly alleviated. We concluded that VAT excision alleviated TAC-induced cardiac failure by decreasing serum arachidic acid, behenic acid, lignoceric acid, and docosapentaenoic acid levels.

scholarly journals Visceral Adipose Tissue Promotes Pressure-Induced Heart Failure Associated with Circulating Fatty Acids

2020 ◽  
Author(s):  
Wenjiao Shi ◽  
Yuanzhi Peng ◽  
Jianer Du ◽  
Xiaojian Weng
Keyword(s):  
Heart Failure ◽  
Fatty Acids ◽  
Adipose Tissue ◽  
Visceral Adipose Tissue ◽  
Arachidic Acid ◽  
Docosapentaenoic Acid ◽  
Behenic Acid ◽  
Lignoceric Acid ◽  
Visceral Adipose ◽  
Cardiac Enlargement

Abstract Visceral adipose tissue (VAT) is the main source of circulating fatty acids (FAs) that provides the energy substrate for the heart. Till now, studies have not shown a clear association between individual circulating FAs and heart failure (HF). In this study, we aimed to investigate the changes in circulating FAs in HF mice and their association with VAT by removing epididymal white adipose tissue (eWAT). Here, we found that the serum levels of four fatty acids, namely arachidic acid, behenic acid, lignoceric acid, and docosapentaenoic acid, were significantly decreased in pressure-induced HF mice via transverse aortic constriction (TAC) surgery accompanied with cardiac enlargement and fibrosis. Most importantly, removal of eWAT in mice led to a significant decrease in the levels of the above-mentioned fatty acids without any significant difference between the HF and sham groups. Accordingly, cardiac enlargement and fibrosis were significantly alleviated. We concluded that VAT excision alleviated TAC-induced cardiac failure by decreasing serum arachidic acid, behenic acid, lignoceric acid, and docosapentaenoic acid levels.

scholarly journals Empagliflozin improves chronic hypercortisolism-induced abnormal myocardial structure and cardiac function in mice

2020 ◽  
Vol 11 ◽  
pp. 204062232097483
Author(s):  
Qing-Qing Zhang ◽  
Guo-Qing Li ◽  
Yi Zhong ◽  
Jie Wang ◽  
An-Ning Wang ◽  
...  
Keyword(s):  
Myocardial Dysfunction ◽  
Sglt2 Inhibitor ◽  
Heart Tissue ◽  
Left Ventricular ◽  
Tissue Samples ◽  
Beneficial Effects ◽  
Reduced Body ◽  
Sodium Glucose Cotransporter ◽  
And Function ◽  
Visceral Adipose

Background: Chronic exposure to excess glucocorticoids is frequently associated with a specific cardiomyopathy. Empagliflozin, a sodium-glucose cotransporter 2 (SGLT2) inhibitor, has beneficial effects as it aids in the reduction of heart failure and cardiovascular mortality in hospitalized patients. The aim of this study was to investigate the effects of empagliflozin on chronic hypercortisolism-induced myocardial fibrosis and myocardial dysfunction in mice. Methods: Male C57BL/6J mice (6 weeks old) were randomized to control, corticosterone (CORT), and empagliflozin + CORT groups. After 4 weeks of administration, heart structure and function were evaluated by echocardiography, and peripheral blood and tissue samples were collected. Expressions of Ccl2, Itgax, Mrc1, and Adgre1 mRNA in heart tissue were evaluated by RT-PCR, and signal transducer and activator of transcription 3 (STAT3) and Toll-like receptor 4 (TLR4) protein expression were analyzed by Western blotting. Results: Empagliflozin effectively reduced body weight, liver triglyceride, visceral adipose volume, and uric acid in CORT-treated mice. Left ventricular hypertrophy and cardiac dysfunction were improved significantly, phosphorylated STAT3 and TLR4 were alleviated, and macrophage infiltration in the myocardium was inhibited after administration of empagliflozin in CORT-treated mice. Conclusion: Empagliflozin has beneficial effects on specific cardiomyopathy associated with CORT, and the results provide new evidence that empagliflozin might be a potential drug for the prevention of this disease.

Chemical Composition of the Fatty Oils of the Seeds of Cleome Viscosa Accessions

2012 ◽  
Vol 7 (10) ◽  
pp. 1934578X1200701 ◽  
Author(s):  
Rashmi Kumari ◽  
Gopal Rao Mallavarapu ◽  
Vinod Kumar Jain ◽  
Sushil Kumar
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Linoleic Acid ◽  
Stearic Acid ◽  
Palmitoleic Acid ◽  
Methyl Esters ◽  
Arachidic Acid ◽  
Behenic Acid ◽  
Trace Constituents ◽  
Cleome Viscosa

Fatty oils of the seeds of Cleome viscosa accessions from Delhi, Jaipur, Faridabad, Surajkund and Hyderabad were methylated and analyzed by GC and GC-MS. The major fatty acids, identified as their methyl esters, of the oils from these five locations were palmitic acid (10.2-13.4%), stearic acid (7.2-10.2%), oleic acid (16.9-27.1%) and linoleic acid (47.0-61.1%). In addition, palmitoleic acid, octadec-(11 E)-enoicacid, arachidic acid, eicosa-(11 Z)-enoic acid, linolenic acid, heneicosanoic acid, behenic acid, lignoceric acid, pentacosanoic acid, hexacosanoic acid, 12-oxo-stearic acid, and the alkanes tetracosane, pentacosane, hexacosane, heptacosane, octacosane, nonacosane, triocontane, hentriacontane and dotriacontane, were also identified as minor and trace constituents in some of these oils.

Epigenetic Downregulation of FASN in Visceral Adipose Tissue of Insulin Resistant Subjects

2020 ◽  
Author(s):  
Helen Sievert ◽  
Christin Krause ◽  
Cathleen Geißler ◽  
Martina Grohs ◽  
Alexander T. El-Gammal ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Dna Methylation ◽  
Fatty Acids ◽  
Adipose Tissue ◽  
Glucose Intolerance ◽  
Visceral Adipose Tissue ◽  
High Hba1c ◽  
Obese Subjects ◽  
Visceral Adipose

Abstract Objective The risk to develop type 2 diabetes increases with the amount of visceral adiposity presumably due to increased lipolysis and subsequent lipid accumulation in visceral organs. However, data describing the molecular regulation of these pathways in humans are rare. We tested if genes of the lipogenic and lipolytic pathways are associated with glucose intolerance independently of obesity in visceral adipose tissue (VAT) of obese subjects. Moreover, we studied DNA methylation of FASN (fatty acid synthase), that catalyses the synthesis of long-chain fatty acids, in VAT of the same subjects and whether it is associated with metabolic traits. Subjects and methods Visceral adipose tissue biopsies and blood samples were taken from 93 severely obese subjects undergoing bariatric surgery. Subjects were grouped in low HbA1c (L-HbA1c, HbA1c<6.5 %) and high HbA1c (H-HbA1c, HbA1c≥6.5 %) groups and expression of genes from the lipogenic and lipolytic pathways was analysed by TaqMan qPCR. DNA methylation of FASN was quantified by bisulfite-pyrosequencing. Results FASN expression was downregulated in visceral fat from subjects with high HbA1c (p = 0.00009). Expression of other lipogenetic (SCD, ELOVL6) or lipolytic genes (ADRB3, PNPLA2) and FABP4 was not changed. DNA methylation of FASN was increased at a regulatory ChoRE recognition site in the H-HbA1c-subgroup and correlated negatively with FASN mRNA (r = − 0.302, p = 0.0034) and positively with HbA1c (r = 0.296, p = 0.0040) and blood glucose (r = 0.363, p = 0.0005). Conclusions Epigenetic downregulation of FASN in visceral adipose tissue of obese subjects might contribute to limited de novo lipogenesis of important insulin sensitizing fatty acids and could thereby contribute to glucose intolerance and the development of type 2 diabetes independently of obesity.

scholarly journals Epicardial Adipose Tissue Measured From Computed Tomography Predicts Cardiac Resynchronization Therapy Response in Patients With Non-ischemic Systolic Heart Failure

2021 ◽  
Vol 8 ◽  
Author(s):  
Hui-yuan Qin ◽  
Cheng Wang ◽  
Duo-duo Qian ◽  
Chang Cui ◽  
Ming-long Chen
Keyword(s):  
Heart Failure ◽  
Adipose Tissue ◽  
Regression Analysis ◽  
Epicardial Adipose Tissue ◽  
Left Ventricular ◽  
Cardiac Resynchronization ◽  
Resynchronization Therapy ◽  
Qrs Duration ◽  
Response Group ◽  
Crt Response

Background: Epicardial adipose tissue (EAT) has been linked with the pathogenesis of heart failure (HF). Limited data have been reported about the clinical value of EAT for cardiac resynchronization therapy (CRT) in non-ischemic systolic HF. We aimed to explore the values of EAT measured from CT to predict the response to CRT in patients with non-ischemic systolic HF.Methods: Forty-one patients with CRT were consecutively recruited for our study. All patients received both gated resting Single Photon Emission CT (SPECT) myocardial perfusion imaging (MPI) and dual-source multi-detector row CT scans. EAT thickness was assessed on both the parasternal short and horizontal long-axis views. The area of EAT was calculated at the left main coronary artery level. Left ventricular systolic mechanical dyssynchrony (LVMD) was measured by phase standard deviation (PSD) and phase histogram bandwidth (PBW). The definition of CRT response was an improvement of 5% in left ventricular ejection fraction (LVEF) at 6 months after CRT implantation.Results: After 6 months of follow-up, 58.5% (24 of 41) of patients responded to CRT. A greater total perfusion deficit (TPD) was observed in the left ventricle, and a narrower QRS complex was observed in the nonresponse group than in the response group (p &lt; 0.05). Meanwhile, the systolic PSD and systolic PBW were statistically greater in the CRT group with no response than in the response group (p &lt; 0.05). Meanwhile, the baseline QRS duration, TPD, systolic PSD, systolic PBW, EAT thicknesses of the left ventricular (LV) apex, right atrioventricular (AV) groove, and left AV groove were all significantly related to the CRT response in the univariate logistic regression analysis. Furthermore, the QRS duration and EAT thicknesses of the right AV groove and left AV groove were independent predictors of CRT response in the multivariate logistic regression analysis.Conclusions: The EAT thickness of the left AV groove in patients with non-ischemic systolic HF is associated with the TPD of LV and LV systolic dyssynchrony. The EAT thickness of the AV groove has a good predictive value for the CRT response in patients with non-ischemic systolic HF.

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.

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