scholarly journals Hypocholesterolemic Effect of Blackcurrant (Ribes nigrum) Extract in Healthy Female Subjects: A Pilot Study

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4085
Author(s):  
Naoki Nanashima ◽  
Kayo Horie ◽  
Maiko Kitajima ◽  
Shizuka Takamagi ◽  
Kasumi Mikami ◽  
...  
Keyword(s):  
Pilot Study ◽  
Total Cholesterol Level ◽  
Low Density Lipoprotein ◽  
Daily Intake ◽  
Density Lipoprotein ◽  
The Body ◽  
Low Density ◽  
Hypocholesterolemic Effect ◽  
Healthy Women ◽  
Vldl Cholesterol

Blackcurrant extract (BCE) ameliorates dyslipidemia in menopausal model animals and in elderly women at a risk of dyslipidemia. However, it is unknown whether the daily intake of BCE can prevent lipid abnormalities in healthy individuals. Lipids are essential for the body, but they also cause arteriosclerosis. In this noncomparative pilot study, we examined the effects of BCE administered for 29 days on serum lipids in young healthy women. Blood samples were collected before and on days 4 and 29 after BCE intake, and 20 lipoprotein fractions in the serum were separated using a gel-permeation high-performance liquid chromatography method to measure the triacylglycerol and cholesterol levels in lipoproteins. There were no effects on lipids on day 4 of BCE intake, but the total cholesterol level decreased on day 29. Furthermore, the levels of total very-low-density lipoprotein (VLDL) cholesterol, small VLDL cholesterol, and large low-density lipoprotein cholesterol were significantly decreased. These results suggest that the daily intake of BCE has a hypocholesterolemic effect in healthy women, and that it is effective in preventing atherosclerosis.

scholarly journals Morphological characterization of the cholesteryl ester cycle in cultured mouse macrophage foam cells.

1983 ◽  
Vol 97 (4) ◽  
pp. 1156-1168 ◽  
Author(s):  
D J McGookey ◽  
R G Anderson
Keyword(s):  
Cholesteryl Ester ◽  
Lipase Activity ◽  
Lipid Droplets ◽  
Free Cholesterol ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
The Body ◽  
Cyclic Process ◽  
Low Density ◽  
Cholesteryl Esters

Mouse peritoneal macrophages can be induced to accumulate cholesteryl esters by incubating them in the presence of acetylated low density lipoprotein. The cholesteryl esters are sequestered in neutral lipid droplets that remain in the cell even when the acetylated low density lipoprotein is removed from the culture media. Previous biochemical studies have determined that the cholesterol component of cholesteryl ester droplets constantly turns over with a half time of 24 h by a cyclic process of de-esterification and re-esterification. We have used morphologic techniques to determine the spatial relationship of cholesteryl ester, free cholesterol, and lipase activity during normal turnover and when turnover is disrupted. Lipid droplets were surrounded by numerous 7.5-10.0-nm filaments; moreover, at focal sites on the margin of each droplet there were whorles of concentrically arranged membrane that penetrated the matrix. Histochemically detectable lipase activity was associated with these stacks of membrane. Using filipin as a light and electron microscopic probe for free cholesterol, we determined that a pool of free cholesterol was associated with each lipid droplet. Following incubation in the presence of the exogenous cholesterol acceptor, high density lipoprotein, the cholesteryl ester droplets disappeared and were replaced with lipid droplets of a different lipid composition. Inhibition of cholesterol esterification caused cholesteryl ester droplets to disappear and free cholesterol to accumulate in numerous myelin-like structures in the body of the cell.

scholarly journals The effect of plasma low density lipoprotein apheresis on the hepatic secretion of biliary lipids in humans

Gut ◽  
1997 ◽  
Vol 41 (5) ◽  
pp. 700-704 ◽  
Author(s):  
C G Hillebrant ◽  
B Nyberg ◽  
K Einarsson ◽  
M Eriksson
Keyword(s):  
Bile Acids ◽  
Biliary Drainage ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Secretion Rate ◽  
Biliary Secretion ◽  
Low Density ◽  
Ldl Apheresis ◽  
T Tube ◽  
Vldl Cholesterol

Background—The liver is a key organ in the metabolism of cholesterol in humans. It is the only organ by which substantial amounts of cholesterol are excreted from the body, either directly as free cholesterol into the bile or after conversion to bile acids. The major part of cholesterol synthesis in the body occurs in the liver. Cholesterol is also taken up by the liver from plasma lipoproteins. The relative contributions of newly synthesised cholesterol and plasma lipoprotein cholesterol to bile acid synthesis and biliary cholesterol secretion, respectively, are not known in detail.Aims—To determine how a rapid lowering of plasma low density lipoprotein (LDL) and very low density lipoprotein (VLDL) cholesterol influences the biliary secretion rates of cholesterol and bile acids in patients with cholesterol gallstones and complete biliary drainage. In this model with a completely interrupted enterohepatic circulation, the secretion of bile acids equals the new synthesis of bile acids in the liver.Patients—Eight patients with common bile duct stones of cholesterol type undergoing conventional cholecystectomy and choledocholithotomy.Methods—At operation a balloon occludable Foley catheter attached to a T tube was inserted into the bile duct with the balloon placed just past the distal limb of the T tube. The T tube was allowed to drain the bile externally. One week after the operation the Foley catheter balloon was inflated, creating complete biliary drainage. Twelve hours following the inflation plasma LDL apheresis was carried out for two hours. Bile was collected for 15 minute periods starting one hour before the apheresis and ending two hours after its termination. During the collection of bile, plasma lipids were analysed on several occasions.Results—The plasma level of LDL cholesterol decreased by 26% from (mean (SEM)) 2.19 (0.29) to 1.63 (0.17) mmol/l during the LDL apheresis while high density lipoprotein (HDL) cholesterol in plasma was unaffected. During LDL apheresis apolipoprotein B containing lipoproteins bind to the column, causing a significant decrease of not only plasma LDL but also of VLDL cholesterol. The secretion rate of bile acids decreased significantly by 31% from 131 (38) to 90 (16) μmol/15 minutes (p=0.045). The output of phospholipids also decreased by 19%. The biliary secretion rate of cholesterol was not, however, affected by the plasma LDL apheresis.Conclusions—The results suggest that, in patients with cholesterol gallstones and complete biliary drainage, lowering of plasma LDL and VLDL cholesterol reduces the biliary secretion rate—synthesis—of bile acids without affecting the biliary secretion rate of cholesterol.

scholarly journals Whole-Body Prolyl Hydroxylase Domain (PHD) 3 Deficiency Increased Plasma Lipids and Hematocrit Without Impacting Plaque Size in Low-Density Lipoprotein Receptor Knockout Mice

2021 ◽  
Vol 9 ◽  
Author(s):  
Jasper A. F. Demandt ◽  
Kim van Kuijk ◽  
Thomas L. Theelen ◽  
Elke Marsch ◽  
Sean P. Heffron ◽  
...  
Keyword(s):  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Prolyl Hydroxylase ◽  
The Body ◽  
Whole Body ◽  
Low Density ◽  
Lipoprotein Receptor ◽  
Plaque Size ◽  
Low Density Lipoprotein Receptor ◽  
Density Lipoprotein Receptor

Background and aims: Atherosclerosis is an important cause of clinical cardiovascular events. Atherosclerotic plaques are hypoxic, and reoxygenation improves plaque phenotype. Central players in hypoxia are hypoxia inducible factors (HIF) and their regulators, HIF-prolyl hydroxylase (PHD) isoforms 1, 2, and 3. PHD inhibitors, targeting all three isoforms, are used to alleviate anemia in chronic kidney disease. Likewise, whole-body PHD1 and PHD2ko ameliorate hypercholesterolemia and atherogenesis. As the effect of whole-body PHD3 is unknown, we investigated the effects of germline whole-body PHD3ko on atherosclerosis.Approach and Results: To initiate hypercholesterolemia and atherosclerosis low-density lipoprotein receptor knockout (LDLrko) and PHD3/LDLr double knockout (PHD3dko), mice were fed a high-cholesterol diet. Atherosclerosis and hypoxia marker pimonidazole were analyzed in aortic roots and brachiocephalic arteries. In contrast to earlier reports on PHD1- and PHD2-deficient mice, a small elevation in the body weight and an increase in the plasma cholesterol and triglyceride levels were observed after 10 weeks of diet. Dyslipidemia might be explained by an increase in hepatic mRNA expression of Cyp7a1 and fatty acid synthase, while lipid efflux of PHD3dko macrophages was comparable to controls. Despite dyslipidemia, plaque size, hypoxia, and phenotype were not altered in the aortic root or in the brachiocephalic artery of PHD3dko mice. Additionally, PHD3dko mice showed enhanced blood hematocrit levels, but no changes in circulating, splenic or lymphoid immune cell subsets.Conclusion: Here, we report that whole-body PHD3dko instigated an unfavorable lipid profile and increased hematocrit, in contrast to other PHD isoforms, yet without altering atherosclerotic plaque development.

scholarly journals The Hypolipidemic Effect of Aqueous Extract of Hibiscus sabdariffa on Paracetamol-induced Hepatotoxicity in Albino Wistar Rats

2020 ◽  
pp. 54-60
Author(s):  
E. B. Umoren ◽  
J. F. Ekpenyong ◽  
O. E. Oyama ◽  
A. O. Obembe
Keyword(s):  
Body Weight ◽  
Aqueous Extract ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Treated Group ◽  
The Body ◽  
Control Group ◽  
Hypolipidemic Effect ◽  
Low Density ◽  
Hibiscus Sabdariffa

Aim of the Study: This study was undertaken to ascertain if Hibiscus sabdariffa extract can affect the lipid profile (Total cholesterol (TC), triglycerides (TG), high density lipoprotein (HDL), very low density lipoprotein (VLDL), and low density lipoprotein (LDL)) levels in a paracetamol- induced hepatotoxicity using albino Wistar rat as a model. Materials and Methods: Thirty (30) rats used for this study were divided into three groups. Group A (n=10) served as control. Group B (n=10) was administered paracetamol only at a dose of 750 mg/kg body weight. Group C (n=10) was administered paracetamol (dose 750 mg/kg body weight) and aqueous extract of H. sabdariffa (dose 10 ml/kg body weight) of the animal for 3 weeks. All animals were allowed free access to clean drinking water and normal rat chow. Results: Results of the study revealed that TC was significantly lower (p<0.05) in the paracetamol + H. sabdariffa-treated group as compared to paracetamol-treated group and control respectively. Similar trend was observed with TG, VLDL-c, LDL-c and HDL-c. However, the decrease in HDL-c was not statistically significant when compared to control. Conclusion: The presence of bioactive constituents vis; anthocyanins, flavonoids, polyvenols and free radical scavenging properties in H. sabdariffa enabled a hypolipidemic effect on the animals by lowering the levels of serum TG, VLDL-c, LDL-c despite challenge on the liver. However, it was unable to produce significant effect on HDL concentration -very important cholesterol required in high level to maintain homeostasis inside the body. This may be due to the challenge on the liver as a result of the paracetamol abuse.

scholarly journals The Description of Low Density Lipoprotein (LDL) Levels on Smoker and Non Smoker Adolescent in Buyan Hamlet, Pancasari Village, Sukasada District, Buleleng, Bali

2017 ◽  
Vol 4 (1) ◽  
pp. 39-44
Author(s):  
Ni Made Restina Juliani ◽  
I Putu Oka Dharmawan ◽  
Putu Ayu Parwati
Keyword(s):  
Physical Activity ◽  
Coronary Heart Disease ◽  
Heart Disease ◽  
Ldl Cholesterol ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
The Body ◽  
Low Density ◽  
Blood Samples ◽  
Cholesterol Levels

Introduction: Low Density Lipoprotein (LDL) is a type of low-density lipoprotein and the most widely transported cholesterol in the body. Increased levels of LDL in the body can be affected by genetics, age, gender, obesity, physical activity, lifestyle, drug consumption and smoking. Substances in a cigarette can cause an increase of LDL levels. Increased of LDL cholesterol levels can cause Coronary Heart Disease (CHD). The purpose of this research is to know the description of Low Density Lipoprotein (LDL) levels on smoker and non-smoker adolescent in Buyan Hamlet, Pancasari Village, Sukasada District, Buleleng Bali. Method: The type of this research is descriptive. This research was conducted in April-May 2017, which used fasting blood samples of 42 respondents. Result: From the average result of LDL level in smoker adolescent that is 134,91 mg/dL higher than the average of LDL level in non-smoker adolescent that is 74,90 mg/dL. The result of LDL cholesterol levels was determined by 21 smoker adolescent respondents with the close to optimal category (100-129 mg/dL) as many as 9 people (42,8%), and 12 people (57,3%) with worry category (130-159 mg/dL). Whereas in 21 non-smoker adolescent respondents obtained  result of LDL cholesterol level test with optimal category (<100 mg/dL) counted 18 people (87,71%) and 3 person (14,30%) with close to optimal category (100-129 mg/dL). Discussion: Based on the results of this research can be concluded that in smoker adolescent obtained LDL levels with close to optimal category and worrying whereas in non-smoker adolescents obtained LDL levels in the optimal category and close to optimal.

scholarly journals Effectiveness of Probiotics, Metformin and Their Combination Therapy in Ameliorating Dyslipidemia Associated With PCOS

2019 ◽  
pp. 1-9
Author(s):  
Urooj Zafar ◽  
Jahan Ara Hassan ◽  
Kauser Ismail ◽  
Shanza Agha ◽  
Zahida Memon ◽  
...  
Keyword(s):  
Combination Therapy ◽  
Lipid Profile ◽  
Low Density Lipoprotein ◽  
Tertiary Care ◽  
Density Lipoprotein ◽  
The Body ◽  
Lipoprotein Cholesterol ◽  
Low Density ◽  
Care Hospital ◽  
Low Density Lipoprotein Cholesterol

Background: Polycystic ovary syndrome (PCOS) is a heterogeneous metabolic disorder affecting women of the child-bearing age. Alteration in lipid profile is one of the troublesome features faced by PCOS patients that need to be treated. Aim: The purpose of this study was to compare the effects of Probiotics, Metformin and their Combination therapy on lipid profile in women suffering from PCOS. Study Design: Single-Centered Randomized Controlled Trial. Setting: Gynecological clinic of Karachi at Tertiary care Hospital from December 2018 to May 2019. Patients and Methods: Total 78 PCOS patients of age between 18 to 40 years were involved in this trial rendering to Rotterdam criteria. After taking written and informed consent they were randomly allocated to three groups and were received: Metformin 500 mg B.D (n = 26), Probiotic Capsule 180 mg B.D (n = 26) and Combination of Metformin 500 mg B.D / Probiotic Capsule 180 mg B.D for 12-weeks. Lipid profile was measured at baseline and after 12-weeks of intervention along with the body weight. In the end, pre versus post therapy and comparison of different group’s results were analyzed. Results: Metformin and Met/Pro Combination groups resulted in a significant reduction in Total Cholesterol (TC) as compared to Probiotic group. Fall in Low-Density Lipoprotein Cholesterol (LDL-C) levels were noteworthy after Probiotics and Met/Pro treatment. Serum TG concentrations were significantly reduced in all the groups. High-Density Lipoprotein Cholesterol (HDL-C) levels were slightly elevated after Probiotics treatment, which was not statistically significant but Metformin and Met/Pro group increases it to the significant value. No substantial change was found in the Very Low-Density Lipoprotein Cholesterol VLDL-C levels in any of the three groups. Conclusion: Overall, Probiotics treatment in PCOS women for 12 weeks exhibited noteworthy changes in TG, and LDL-C levels. Metformin markedly improve Cholesterol, TG and HDL-C. However, Met/Pro improved all the lipid changes to the significant value except for VLDL-C.

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