Impaired postprandial clearance of triacylglycerol-rich lipoproteins in adipose tissue in obese subjects

1995 ◽  
Vol 268 (4) ◽  
pp. E588-E594 ◽  
Author(s):  
J. L. Potts ◽  
S. W. Coppack ◽  
R. M. Fisher ◽  
S. M. Humphreys ◽  
G. F. Gibbons ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Low Density Lipoprotein ◽  
Postprandial Lipemia ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Control Group ◽  
Postprandial Period ◽  
Before And After ◽  
Obese Subjects ◽  
Subcutaneous Adipose

Adipose tissue is an important site of clearance of circulating triacylglycerol (TAG), especially in the postprandial period. Postprandial lipemia is usually increased in obesity. We studied the extraction of TAG from plasma and TAG-rich lipoproteins (TRLs) in subcutaneous adipose tissue in 11 control and 8 obese subjects before and after a mixed meal. Clearance of plasma TAG and very low-density lipoprotein (VLDL)-TAG was decreased in the obese subjects after an overnight fast. After the meal, chylomicron-TAG extraction increased in the control group whereas VLDL-TAG clearance decreased; these changes were not seen in the obese group, in whom the VLDL particles appeared to be better able to compete with the chylomicrons for clearance by lipoprotein lipase. In the control subjects, removal of TAG from the TRL in the postprandial period was accompanied by a shift toward addition of cholesterol to the high-density lipoprotein (HDL) fraction; this was not observed in the obese subjects. We conclude that disturbed TRL-TAG clearance in adipose tissue is related both to the elevated plasma TAG concentrations and the depressed HDL-cholesterol concentrations typical of obesity.

scholarly journals Oxidative/Antioxidative Status in Patients after Myocardial Infarction and in Those without Cardiovascular Event Depending on Anthropometric Factors Associated with Overweight and Obesity

2019 ◽  
Author(s):  
Grzegorz Józef Nowicki ◽  
Barbara Ślusarska ◽  
Andrzej Prystupa ◽  
Maciej Polak ◽  
Maria Czubaj-Kowal ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Adipose Tissue ◽  
Cardiovascular Event ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Overweight And Obesity ◽  
Control Group ◽  
Anthropometric Parameters ◽  
Antioxidative Status ◽  
Total Antioxidative Status

Obesity is one of the factors leading to the development of atherosclerosis. This metabolic disorder is associated with an increased production of reactive oxygen species, which affect the oxidative stress level. The aim of this study was to evaluate oxidative/antioxidative status and to investigate the correlation between redox markers and anthropometric parameters and body composition in adult patients after myocardial infarction and in individuals without a cardiovascular event in the past. Descriptive data on socio-demographic, clinical, and anthropometric features and blood samples were collected and categorized into two equal groups: after myocardial infarction (study group (SG), n = 80) and without a cardiovascular event (control group (CG), n = 80). The oxidative/antioxidative status was assessed in plasma on the basis of total oxidative/capacitive status (PerOx), total antioxidative status/capacity (ImAnOx), and oxidized low-density lipoprotein (oxLDL). OxLDL was significantly higher in the CG group compared to the SG group (p = 0.02). No significant differences were found with regard to PerOx and ImAnOx values between the studied groups. Significant positive correlation between PerOx and percentage of adipose tissue (FM [%]) and body adiposity index (BAI) was found in the two studied groups. ImAnOx significantly positively correlated with VAI in SG and FM% in CG. OxLDL negatively correlated with body mass index and waist to hip circumference ratio in CG. The total oxidative/antioxidative status is related to the amount of adipose tissue and the BAI of the subjects. It was observed that it correlates more frequently with the visceral distribution of body fat.

scholarly journals Evaluation of Lipid Lowering Effect of Milk Thistle (Silybum Marianum) in Comparison with Rosuvastatin in Rats by Using Ace-alera® Analyzer

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Lipid Lowering ◽  
Control Group ◽  
Milk Thistle ◽  
High Dose ◽  
Hypolipidemic Effect ◽  
Low Density ◽  
Therapeutic Protocols

Dyslipidemia is a metabolic disorder that is characterized with an elevation in the cholesterol serum levels that can be treated with various hypolipidemic drugs like rosuvastatin. The present study was undertaken to determine and evaluate the hypolipidemic effect of milk thistle seeds extract in comparison with rosuvastatin and the combination of both for the treatment of dyslipidemia in rats. Also its effect on blood glucose levels on experimentally induced dyslipidemic rats. In vivo studies were conducted on wister albino laboratory rats, in which 49 rats were induced to be dyslipidemic by a daily intragastric administration of cholesterol (2 g/kg). The induction of dyslipidemia was evaluated by comparing these rats with a negative control group that was composed of 10 healthy rats. Then, after one month dyslipidemia was induced in 49 rats that were divided into 6 groups, as the following; positive control group (n=9) received cholesterol (2 g/kg) for another one month, and the other five groups each of 8 rats continued to receive cholesterol (2 g/kg) for one month along with therapy as; rosuvastatin low dose (RL) group received 10 mg/kg, rosuvastatin high dose (RH) group received 20 mg/kg, milk thistle (MT) group received 7.15 mg/kg, (RL+MT) group received a combination of 10 mg/kg of rosuvastatin and 7.15 mg/kg of milk thistle, and (RH+MT) group received a combination of 20 mg/kg of rosuvastatin and 7.15 mg/kg of milk thistle. The statistical results of biochemical analysis showed that all the studied therapeutic protocols whether given alone; RL, RH, and MT or in a combination; RL+MT and RH+MT led to a significant (p≤0.05) hypolipidemic effect that reduced the total cholesterol (TC), triglyceride (TG), low density lipoprotein (LDL) and very low density lipoprotein (VLDL) and increased the high density lipoprotein (HDL) cholesterol levels. In conclusion, all therapeutic protocols were effective in treating dyslipidemia, as they all reduced the TC, TG, LDL, and VLDL, and increased the HDL cholesterol significantly (p≤0.05). Furthermore, we found that milk thistle can be used in the management of dyslipidemia, as it has a hypolipidemic effect. Also, the addition of milk thistle to rosuvastatin therapy reduced the risk of developing diabetes mellitus (DM), as it has a glucose modulating activity either when it was given alone or in combination with rosuvastatin. Moreover, the combination of milk thistle and rosuvastatin was of a great benefit, as it gave an intensive goal of therapy than each one alone in altering all lipid profile parameters.

scholarly journals Evaluation of Serum HDL and LDL levels in Type II Diabetes Mellitus

2013 ◽  
Vol 1 (1) ◽  
pp. 21 ◽  
Author(s):  
K R Joshi ◽  
K K Hiremath ◽  
S P Gupta
Keyword(s):  
Diabetes Mellitus ◽  
Type Ii Diabetes ◽  
Ldl Cholesterol ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Type Ii Diabetes Mellitus ◽  
Lipoprotein Cholesterol ◽  
Control Group ◽  
Type Ii

  Introduction: Diabetes mellitus is a type of metabolic disorder characterized by hyperglycemia resulting from defect in insulin secretion, insulin action or both. This study intended to compare High Density Lipoprotein Cholesterol (HDL) and Low Density Lipoprotein Cholesterol (LDL) profile between type II diabetic and non-diabetic subjects and also find the correlation between HDL and LDL cholesterol in type II diabetic.   Methods: The study was conducted on 100 total subjects out of which experimental group with 50 subjects of known Type II Diabetes mellitus and control group with 50 subjects.   Results: The result of the present study suggests that fasting blood sugar and LDL cholesterol levels were increased but HDL cholesterol level was reduced in type II diabetic subjects when compared to controls.   Conclusion: The estimation of HDL cholesterol and LDL cholesterol in type II diabetes mellitus is very useful as it may serve as a useful parameter to monitor the prognosis of the patient.

scholarly journals Association of PRDM16 rs12409277 and CtBP2 rs1561589 gene polymorphisms with lipid profile of adolescents

2021 ◽  
Author(s):  
Nela Maksimovic ◽  
Vanja Vidovic ◽  
Tatjana Damnjanovic ◽  
Biljana Jekic ◽  
Nada Majkic Singh ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Lipid Profile ◽  
Total Cholesterol ◽  
Ldl Cholesterol ◽  
Fasting Glucose ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Cholesterol Levels ◽  
Brown Adipose

IntroductionPositive regulatory domain containing 16 (PRDM16) protein represents the key regulator of brown adipose tissue (BAT) development. It induces brown fat phenotype and represses white adipose tissue specific genes through the association with C-terminal binding co-repressor proteins (CtBP1 and CtBP2). In healthy adults presence of BAT has been associated with lower glucose, total cholesterol and LDL (low-density lipoprotein) cholesterol levels. Our aim was to analyze the association of PRDM16 gene (rs12409277) and CtBP2 gene (rs1561589) polymorphisms with body mass index (BMI), fasting glucose level and lipid profile of adolescents.Material and methodsOur study included 295 healthy school children, 145 boys (49.2%) and 150 girls (50.8%), 15 years of age. Genotypes for the selected polymorphisms were detected by the real-time PCR method. Age, gender, height, weight, lipid profile (total cholesterol, HDL cholesterol, LDL cholesterol, triglycerides) and fasting glucose levels were recorded.ResultsWe did not find a statistically significant association of rs12409277 and rs1561589 polymorphisms with BMI, fasting glucose and lipid profile of adolescents. We further analyzed the combined effect of the two SNPs and the statistical analysis showed that carriers of CT genotype of rs12409277 polymorphism and GG genotype of rs1561589 polymorphism had significantly lower total cholesterol (p = 0.001) and LDL cholesterol (p = 0.008) levels compared to all other groups of genotypes.ConclusionsOur study suggests that rs12409277 and rs1561589 polymorphism might have an influence on total and LDL cholesterol levels in adolescents. Larger studies should be performed in order to confirm our results.

scholarly journals Physical Exercise Reduces the Expression of RANTES and Its CCR5 Receptor in the Adipose Tissue of Obese Humans

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Engin Baturcam ◽  
Jehad Abubaker ◽  
Ali Tiss ◽  
Mohamed Abu-Farha ◽  
Abdelkrim Khadir ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Physical Exercise ◽  
Subcutaneous Adipose Tissue ◽  
Inflammatory Markers ◽  
Ccr5 Expression ◽  
Ccr5 Receptor ◽  
Before And After ◽  
Obese Subjects ◽  
Subcutaneous Adipose ◽  
First Time

RANTES and its CCR5 receptor trigger inflammation and its progression to insulin resistance in obese. In the present study, we investigated for the first time the effect of physical exercise on the expression of RANTES and CCR5 in obese humans. Fifty-seven adult nondiabetic subjects (17 lean and 40 obese) were enrolled in a 3-month supervised physical exercise. RANTES and CCR5 expressions were measured in PBMCs and subcutaneous adipose tissue before and after exercise. Circulating plasma levels of RANTES were also investigated. There was a significant increase in RANTES and CCR5 expression in the subcutaneous adipose tissue of obese compared to lean. In PBMCs, however, while the levels of RANTES mRNA and protein were comparable between both groups, CCR5 mRNA was downregulated in obese subjects (P<0.05). Physical exercise significantly reduced the expression of both RANTES and CCR5 (P<0.05) in the adipose tissue of obese individuals with a concomitant decrease in the levels of the inflammatory markers TNF-α, IL-6, and P-JNK. Circulating RANTES correlated negatively with anti-inflammatory IL-1ra (P=0.001) and positively with proinflammatory IP-10 and TBARS levels (P<0.05). Therefore, physical exercise may provide an effective approach for combating the deleterious effects associated with obesity through RANTES signaling in the adipose tissue.

scholarly journals Effects of Atorvastatin on the Clearance of Triglyceride-Rich Lipoproteins in Familial Combined Hyperlipidemia

2004 ◽  
Vol 89 (12) ◽  
pp. 5972-5980 ◽  
Author(s):  
M. Castro Cabezas ◽  
C. Verseyden ◽  
S. Meijssen ◽  
H. Jansen ◽  
D. W. Erkelens
Keyword(s):  
Low Density Lipoprotein ◽  
Postprandial Lipemia ◽  
Density Lipoprotein ◽  
Familial Combined Hyperlipidemia ◽  
Atorvastatin Treatment ◽  
Fasting Plasma ◽  
Postprandial Triglyceride ◽  
Before And After ◽  
Apolipoprotein B48 ◽  
Loading Tests

Abstract Familial combined hyperlipidemia (FCHL) patients have an impaired catabolism of postprandial triglyceride (TG)-rich lipoproteins (TRLs). We investigated whether atorvastatin corrects the delayed clearance of large TRLs in FCHL by evaluating the acute clearance of Intralipid (10%) and TRLs after oral fat-loading tests. Sixteen matched controls were included. Atorvastatin reduced fasting plasma TG (from 3.6 ± 0.4 to 2.5 ± 0.3 mm; mean ± sem) without major effects on fasting apolipoprotein B48 (apoB48) and apoB100 in large TRLs. Atorvastatin significantly reduced fasting intermediate density lipoprotein (Svedberg flotation, 12–20)-apoB100 concentrations. After Intralipid, TG in plasma and TRL showed similar kinetics in FCHL before and after atorvastatin treatment, although compared with controls, the clearance of large TRLs was only significantly slower in untreated FCHL, suggesting an improvement by atorvastatin. Investigated with oral fat-loading tests, the clearance of very low density lipoprotein (Sf20–60)-apoB100 improved by 24%, without major changes in the other fractions. The most striking effects of atorvastatin on postprandial lipemia in FCHL were on hepatic TRL, without major improvements on intestinal TRLs. Fasting plasma TG should be reduced more aggressively in FCHL to overcome the lipolytic disturbance causing delayed clearance of postprandial TRLs.

scholarly journals Vitamin D Deficiency and Insufficiency in Obese Children and Adolescents and Its Relationship with Insulin Resistance

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Emel Torun ◽  
Erdem Gönüllü ◽  
İlker Tolga Özgen ◽  
Ergül Cindemir ◽  
Faruk Öktem
Keyword(s):  
Insulin Resistance ◽  
Vitamin D ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Obese Group ◽  
Control Group ◽  
Obese Children ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D ◽  
Obese Subjects

Objectives. We aimed to determine the relationship between insulin resistance and serum 25-hydroxyvitamin D (25-OHD) levels in obese children and their nonobese peers.Materials and Methods. Included in the study group were 188 obese children (aged 9–15 years), and 68 age- and gender-matched healthy children of normal weight as control group. Anthropomorphic data were collected on patients and fasting serum glucose, insulin, serum lipids, alanine aminotransaminase (ALT) and 25-OHD were measured. The homeostatic model assessment of insulin resistance (HOMA-IR) was calculated in both groups.Results. The levels of 25-OHD in the obese group were significantly lower than those of the nonobese (). HOMA-IR, triglycerides, low-density lipoprotein, and ALT levels in the obese group were significantly higher than values of control group ( and , resp.). In the obese group, vitamin D deficiency, insufficiency, and sufficiency (25-OHD < 10 ng/dl, < 20, >10 ng/dl; > 20 ng/dl, resp.) were not correlated with HOMA-IR (, ). HOMA-IR was negatively correlated with BMI, BMI SDS, and BMI%, and triglycerides, low-density lipoprotein, and ALT levels ().Conclusion. The insulin resistance of the obese subjects who were vitamin D deficient and insufficient did not statistically differ from those with vitamin D sufficiency. Low 25-hydroxyvitamin D levels were not related with higher insulin resistance in obese children and adolescents. In obese subjects, insulin resistance was affected more from BMI, BMI SDS, and BMI% than from 25-hydroxyvitamin D levels.

scholarly journals Effects of Nigerian Piliostigma thonningii Species Leaf Extract on Lipid Profile in Wistar Rats

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
O. M. Ighodaro ◽  
J. O. Omole
Keyword(s):  
Body Weight ◽  
Lipid Profile ◽  
Leaf Extract ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Cardiovascular Complications ◽  
Control Group ◽  
Piliostigma Thonningii ◽  
Aqueous Leaf Extract

Cardiovascular complications and associated conditions remain a major cause of death, globally. Piliostigma thonningii has been used for different and several medicinal purposes. On this background, the effect of aqueous leaf extract of the plant on the lipid profile of physiologically normal rats was examined. Graded doses of the extract, 0.0, 0.2, and 0.4 g/kg of body weight (bwt) were orally administered to rats for a period of 14 days. The effect of the extract was assessed on the basis of comparative determinations of the evaluated indices in treated rats vis-à-vis the nontreated group as well as in respect to the differences between the basal and final concentrations of the indices in each group. The extract, especially at 0.2 g per kg body weight caused a significant decrease in the total cholesterol, triglycerides, and low-density lipoprotein (LDL) cholesterol in the treated rats when compared to the control group and basal concentrations. Though, the level of high-density lipoprotein (HDL) cholesterol increased in the treated rats, the increase was not significant when compared to the basal concentration. The LDL/HDL ratio in all the experimental groups was less than 0.9. The results obtained in this study suggest that P. thonningii aqueous leaf extract likely contains antilipidaemic and anticholesterolaemic substance(s), which may be useful in the prophylactic and curative management of lipid peroxidation, high blood pressure, and cardiovascular disorders.

scholarly journals Low density lipoprotein delays clearance of triglyceride-rich lipoprotein by human subcutaneous adipose tissue

2013 ◽  
Vol 54 (5) ◽  
pp. 1466-1476 ◽  
Author(s):  
Simon Bissonnette ◽  
Huda Salem ◽  
Hanny Wassef ◽  
Nathalie Saint-Pierre ◽  
Annie Tardif ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Subcutaneous Adipose Tissue ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Low Density ◽  
Triglyceride Rich Lipoprotein ◽  
Subcutaneous Adipose

scholarly journals Adipokine expression and endothelial function in subclinical hypothyroidism rats

2018 ◽  
Vol 7 (2) ◽  
pp. 295-304 ◽  
Author(s):  
Ningning Gong ◽  
Cuixia Gao ◽  
Xuedi Chen ◽  
Yu Wang ◽  
Limin Tian
Keyword(s):  
Adipose Tissue ◽  
Endothelial Function ◽  
Subclinical Hypothyroidism ◽  
Pearson Correlation ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Thyroid Stimulating Hormone ◽  
Control Group ◽  
Tnf Α ◽  
Male Wistar Rats

The purpose of our study was to observe adipokine expression and endothelial function in subclinical hypothyroidism (sHT) rats and to determine whether levothyroxine (LT4) treatment affects these changes. Sixty-five male Wistar rats were randomly divided into five groups: the control group; sHT A, B and C groups and the sHT + T4 group. The sHT rats were induced by methimazole (MMI) and the sHT + T4 rats were administered LT4 treatment after 8 weeks of MMI administration. Thyroid function and lipid levels were measured using radioimmunoassays and enzymatic colorimetric methods, respectively. Serum adiponectin (APN), chemerin, TNF-α, endothelin (ET-1) and nitric oxide (NO) levels were measured using ELISA kits and a nitric-reductive assay. The expression of APN, chemerin and TNF-α in visceral adipose tissue (VAT) was measured in experimental rats using RT-PCR and Western blotting. Hematoxylin–eosin (HE) staining was used to observe changes in adipose tissue. The sHT rats had significantly higher levels of thyroid-stimulating hormone (TSH), TNF-α, chemerin, ET-1, total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C) and lower levels of APN and NO than those in control and sHT + T4 rats. Based on Pearson correlation analysis, the levels of chemerin, TNF-α, ET-1, LDL-C, TC and triglyceride (TG) were positively correlated with TSH, but APN and NO levels were negatively correlated with TSH. These findings demonstrated that high TSH levels contribute to the changes of adipokines and endothelial dysfunction in sHT, but LT4 treatment ameliorates those changes.

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