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Phytosterol and cholesterol

Yan-Chuan Li, Chun-Long Li, Rui Li, Yang Chen, Meng Zhang, Pan-Pan Guo, Dan Shi, Xiao-Ning Ji, Ren-Nan Feng, Chang-Hao Sun
BACKGROUND: It has been established in RCTs that high dose of phytosterols can significantly reduce blood cholesterol. However, it was uncertain whether low dose of phytosterols from daily diets was effective. In this study, we evaluated the associations between dietary phytosterols and body mass index (BMI), waist circumference (WC), blood glucose, serum lipid profiles and prevalence of overweight/obesity and abdominal obesity in healthy subjects. METHODS: Four hundred nine men and 503 women aged 18-60 years were included in this study...
March 16, 2018: Lipids in Health and Disease
Elisa Covolo, Claudio Bilato
Hyperlipidemia is a major risk factor for cardiovascular morbidity and mortality. Treatment strategies include both lifestyle modification and pharmacological therapy. Statins are among the most effective agents to achieve optimal LDL-cholesterol levels, but, not infrequently, patients suffer from myalgia or other side effects. The proven or perceived intolerance to statins requires, therefore, alternative lipid-lowering strategies. In recent years, nutraceuticals have become extensively accepted, and a growing number of molecules with hypothetical cholesterol-lowering activity have been proposed, sometimes with no scientific evidence and/or no methodological accuracy, based only on the belief that these agents are "natural" and do not show side effects...
February 2018: Giornale Italiano di Cardiologia
Marianna Raczyk, Anna Paszel-Jaworska, Magdalena Rudzińska
BACKGROUND: Phytosterols are mainly known as a cholesterol-lowering factor, although they form oxidation products during food storage and processing. Moreover, phytosterol oxidation products (POP) can be ab- sorbed and found in human serum, so there is the need to investigate their impact on different kinds of cells. METHODS: Esters of fatty acids (oleic, linoleic and linolenic) with stigmasterol were synthetized and heated at 180°C, for 1–12 hours...
January 2018: Acta Scientiarum Polonorum. Technologia Alimentaria
Talita A Comunian, Marina Nogueira, Bianca Scolaro, Marcelo Thomazini, Roselayne Ferro-Furtado, Inar Alves de Castro, Carmen S Favaro-Trindade
Intake of omega-3 fatty acids and phytosterols aids in the reduction of cholesterol and serum triglycerides. However, both fatty acids and phytosterols are susceptible to oxidation. This work coencapsulated echium oil (source of stearidonic and alpha-linolenic fatty acids) and beta-sitosterol (phytosterol) by complex coacervation using different combinations of wall materials, and sinapic acid (SA) and transglutaminase as crosslinkers. High encapsulation yields were obtained (29-93% for SA; 68-100% for the mixture of oil and phytosterols) and retention of 49-99% and 16% for encapsulated and free SA, at 30 days-storage...
June 30, 2018: Food Chemistry
Anne Vejux, Amira Namsi, Thomas Nury, Thibault Moreau, Gérard Lizard
Amyotrophic lateral sclerosis (ALS) is a non-demyelinating neurodegenerative disease in adults with motor disorders. Two forms exist: a sporadic form (90% of cases) and a family form due to mutations in more than 20 genes including the Superoxide dismutase 1, TAR DNA Binding Protein, Fused in Sarcoma, chromosome 9 open reading frame 72 and VAPB genes. The mechanisms associated with this pathology are beginning to be known: oxidative stress, glutamate excitotoxicity, protein aggregation, reticulum endoplasmic stress, neuroinflammation, alteration of RNA metabolism...
2018: Frontiers in Molecular Neuroscience
Fumihiko Igarashi, Mari H Ogihara, Masatoshi Iga, Hiroshi Kataoka
Dietary sterols including cholesterol and phytosterols are essential substrates for insect steroid hormone (ecdysteroid) synthesis in the prothoracic glands (PGs). In a silkworm Bombyx mori, one of the model species of insects, the steroidogenesis has been well demonstrated that cholesterol biotransformation into ecdysone in the PG cells. Because insects lack the ability to synthesize cellular sterol de novo, lipoprotein, lipophorin (Lp), has been thought to be the major cholesterol supply source; however, details of cholesterol behavior from Lp to the PG cells has not been analyzed till date...
January 31, 2018: Steroids
Nini H Sissener, Grethe Rosenlund, Ingunn Stubhaug, Nina S Liland
The aim of the study was to investigate how the dietary sterol composition, including cholesterol, phytosterol:cholesterol ratio and phytosterols, affect the absorption, biliary excretion, retention, tissue storage and distribution of cholesterol and individual phytosterols in Atlantic salmon (Salmo salar L.). A feeding trial was conducted at two different temperatures (6 and 12°C), using nine different diets with varying contents of phytosterols, cholesterol and phytosterol:cholesterol ratio. Cholesterol retention values were clearly dependent on dietary cholesterol, and showed that fish fed cholesterol levels <1000 mg/kg feed produced considerable quantities of cholesterol de novo...
February 5, 2018: British Journal of Nutrition
Mengmeng Wang, Weisu Huang, Yinzhou Hu, Liangxiao Zhang, Ya-Fang Shao, Meng Wang, Fang Zhang, Ziyan Zhao, Xiaohong Mei, Tao Li, Donghui Wang, Ying Liang, Jing Li, Yining Huang, Liuquan Zhang, Tao Xu, Huaxin Song, Yongheng Zhong, Baiyi Lu
Phytosterols are well-known for their cholesterol-lowering effects, and the structures and forms of phytosterols affect their bioactivity. We aimed to illustrate the phytosterol profiles in common foods and estimate their natural intake in five geographical regions and among different age groups in China. In total, 12 phytosterols in free and esterified forms of 119 foods from five regions across China were examined using gas chromatography-mass spectrometry. Then, the dietary intake of phytosterols was calculated combined with the dietary foods intake data of Chinese people...
February 3, 2018: Journal of Agricultural and Food Chemistry
Roberta Tolve, Nicola Condelli, Marisa Carmela Caruso, Diego Barletta, Fabio Favati, Fernanda Galgano
Chocolate is one of the most consumed delicacies in the world. Nowadays high-cocoa polyphenol-rich chocolates, probiotic chocolates, and prebiotic chocolates are getting more attention. In light of this, dark chocolate containing microencapsulated phytosterols (MPs) has been developed to reduce cholesterol in individuals. In particular, different dark chocolates containing 64, 72 and 85% of cocoa, fortified with 0, 5, 10 and 15% MP have been produced. The obtained chocolates were characterized by a particle size distribution lower than 30 μm and were stable from a chemical point of view...
February 2, 2018: Food & Function
Lídia Cedó, David Santos, Reija Silvennoinen, Leena Kaipiainen, Annabel F Valledor, Petri T Kovanen, Miriam Lee-Rueckert, Helena Gylling, Francisco Blanco-Vaca, Joan Carles Escolà-Gil
No abstract text is available yet for this article.
August 2017: Atherosclerosis
Kgs Ahmadi, Huda Oktafa, Teti Estiasih
Phytosterol-rich fraction (PRF) obtained from palm fatty acid distillate (PFAD) was investigated for its effect on blood serum lipid profile of dyslipidemia rats. Dyslipidemia was induced by force feeding cholesterol to five groups of rats; one group was a control or normal group. Cholesterol force-fed groups were treated with 0, 10, 20, 30, and 40 mg PRF/kg/day for 4 weeks. All groups of rats were fed standard diet. A normal group was fed standard diet without PRF treatment and cholesterol force feeding...
January 16, 2018: Journal of Dietary Supplements
B L A Prabhavathi Devi, K N Gangadhar, R B N Prasad, D Sugasini, Y Poorna Chandra Rao, B R Lokesh
An enzymatic process was developed for the preparation of a nutritionally enriched 1,3-diacylglycerol(DAG)-rich oil from a blend of refined sunflower and rice bran oils. The process involves hydrolysis of vegetable oil blend using Candida cylindracea followed by esterification with glycerol using Lipozyme RM1M. The resultant DAG-rich oil contains 84% of DAG (66% of 1,3-DAG, 18% of 1,2-DAG) and 16% of triacylglycerol (TAG) along with micro nutrients like γ-oryzanol, tocotrienols, tocopherols and phytosterols...
May 15, 2018: Food Chemistry
Jessica J A Ferguson, Elizabeth Stojanovski, Lesley MacDonald-Wicks, Manohar L Garg
BACKGROUND: Dietary phytosterols (PS) are well-known hypocholesterolaemic agents. Curcumin elicits hypolipidaemic and anti-inflammatory effects in preclinical studies, however, consistent findings in humans are lacking. OBJECTIVE: Concurrent PS and curcumin supplementation may exhibit enhanced hypocholesterolaemic and anti-inflammatory effects to optimise cardio-protection. The objective of this trial was to investigate the effects of dietary intervention with PS with or without curcumin on blood lipids (primary outcome) in hypercholesterolaemic individuals...
December 29, 2017: Metabolism: Clinical and Experimental
Elina Peltomaa, Matthew D Johnson, Sami J Taipale
Microalgae have the ability to synthetize many compounds, some of which have been recognized as a source of functional ingredients for nutraceuticals with positive health effects. One well-known example is the long-chain polyunsaturated fatty acids (PUFAs), which are essential for human nutrition. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are the two most important long-chain omega-3 (ω-3) PUFAs involved in human physiology, and both industries are almost exclusively based on microalgae. In addition, algae produce phytosterols that reduce serum cholesterol...
December 26, 2017: Marine Drugs
Chao-Chin Hsu, Hsin-Chih Kuo, Ko-En Huang
The efficacy of phytosterols extracted from Diascorea alata on antioxidant activities, plasma lipids and hematological profiles was assessed in postmenopausal women. Gas chromatography and mass spectrophotometry was employed to determine the steroid content of Taiwanese yam ( Diascorea alata cv. Tainung No. 2). A two-center, randomized, double-blind, placebo-controlled clinical investigation on 50 postmenopausal women randomly assigned to two groups treated for 12 months with placebo or two sachets daily of Diascorea extracts containing 12 mg/dose was carried out...
December 5, 2017: Nutrients
Alicia Gil-Ramírez, Diego Morales, Cristina Soler-Rivas
Cholesterol levels are strictly regulated to maintain its homeostasis; therefore, if it is not absorbed with the diet, the cholesterol biosynthetic pathway is enhanced and vice versa. Nowadays, the commonly prescribed therapeutic treatments for hypocholesterolemic patients are targeted toward the reduction of both cholesterol intestinal absorption and/or its endogenous biosynthesis. But, when hypercholesterolemia is still moderate the consumption of food products with cholesterol-lowering capacities is more desirable than using drugs...
January 24, 2018: Food & Function
S A Ribas, R Sichieri, A S B Moreira, D O Souza, C T F Cabral, D T Gianinni, D B Cunha
BACKGROUND AND AIMS: Despite evidence of the lipid-lowering effect of plant sterols among adults with hypercholesterolemia, data regarding phytosterol use in children are limited. In this paper, we examined the effects of daily consumption of a phytosterol-enriched milk compound on the lipid profiles of Brazilian children and adolescents with dyslipidemia. METHODS AND RESULTS: This was a randomized, double blind, crossover clinical trial. Twenty eight dyslipidemics outpatients (aged 6-9 years) from an University Hospital were randomly allocated to control or intervention group...
October 2, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
Jerad H Dumolt, Sandhya K Radhakrishnan, Mohammed H Moghadasian, Khuong Le, Mulchand S Patel, Richard W Browne, Todd C Rideout
In hypercholesterolemic pregnancies, the maternal environment is characterized by excessive levels of atherogenic lipids that may increase cardiovascular disease risk in mothers and their offspring. We examined the influence of maternal hypercholesterolemia and phytosterol (PS) intervention on the concentration and metabolism of oxysterols, bioactive oxygenated cholesterol derivatives that regulate arterial health and lesion progression, in mothers and their newly weaned offspring. Twenty-one female apoE(-/-) mice were randomly assigned to three different diets throughout gestation and lactation: (1) chow, (2) high cholesterol (CH; 0...
September 28, 2017: Journal of Nutritional Biochemistry
Joanna Ciura, Magdalena Szeliga, Michalina Grzesik, Mirosław Tyrka
Changes in fenugreek transcriptome related to enhanced production of steroids were induced by methyl jasmonate, cholesterol and squalene, and recorded using RNA-seq. A total of 112,850 unigenes were obtained after de novo assembling of next generation sequencing data, and used for functional annotations. In steroidal saponins pathway, transcripts involved in mevalonate, terpenoid backbone and plant sterol synthesis were annotated. Overexpression of several transcripts from phytosterol biosynthesis pathway was confirmed by quantitative RT-PCR...
October 26, 2017: Genomics
Alessio Correani, Silvia Visentin, Erich Cosmi, Eleonora Ponchia, Sara D'Aronco, Manuela Simonato, Luca Vedovelli, Paola Cogo, Virgilio P Carnielli
BACKGROUND: High dietary intakes of phytosterols (Phyto), such as those consumed by vegans and vegetarians, are not recommended for cholesterol-lowering in pregnant women (PW) because the safety of their use during pregnancy has not been fully established [1]. Information on Phyto in pregnancy is very limited. OBJECTIVE: To characterize the maternal-fetal gradient of free and esterified Phyto at the time of delivery in humans. DESIGN: PW who had a term delivery at the Obstetrics and Gynecology Unit of the University Hospital of Padua (Padua, Italy), between November 2016 and March 2017, participated in the study...
October 13, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
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