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https://www.readbyqxmd.com/read/29016689/modulation-of-the-gut-microbiota-by-the-mixture-of-fish-oil-and-krill-oil-in-high-fat-diet-induced-obesity-mice
#1
Chenxi Cui, Yanyan Li, Hang Gao, Hongyan Zhang, Jiaojiao Han, Dijun Zhang, Ye Li, Jun Zhou, Chenyang Lu, Xiurong Su
Previous studies confirmed that dietary supplements of fish oil and krill oil can alleviate obesity in mice, but the underlying mechanism remains unclear. This study aims to discern whether oil treatment change the structure of the gut microbiota during the obesity alleviation. The ICR mice received high-fat diet (HFD) continuously for 12 weeks after two weeks of acclimatization with a standard chow diet, and the mice fed with a standard chow diet were used as the control. In the groups that received HFD with oil supplementation, the weight gains were attenuated and the liver index, total cholesterol, triglyceride and low-density lipoprotein cholesterol were reduced stepwise compared with the HFD group, and the overall structure of the gut microbiota, which was modulated in the HFD group, was shifted toward the structure found in the control group...
2017: PloS One
https://www.readbyqxmd.com/read/28900242/dietary-docosahexaenoic-acid-dha-as-lysophosphatidylcholine-but-not-as-free-acid-enriches-brain-dha-and-improves-memory-in-adult-mice
#2
Dhavamani Sugasini, Riya Thomas, Poorna C R Yalagala, Leon M Tai, Papasani V Subbaiah
Docosahexaenoic acid (DHA) is uniquely concentrated in the brain, and is essential for its function, but must be mostly acquired from diet. Most of the current supplements of DHA, including fish oil and krill oil, do not significantly increase brain DHA, because they are hydrolyzed to free DHA and are absorbed as triacylglycerol, whereas the transporter at blood brain barrier is specific for phospholipid form of DHA. Here we show that oral administration of DHA to normal adult mice as lysophosphatidylcholine (LPC) (40 mg DHA/kg) for 30 days increased DHA content of the brain by >2-fold...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28812326/effect-of-dietary-components-from-antarctic-krill-on-atherosclerosis-in-apoe-deficient-mice
#3
Cinzia Parolini, Bodil Bjorndal, Marco Busnelli, Stefano Manzini, Giulia S Ganzetti, Federica Dellera, Marie Ramsvik, Inge Bruheim, Rolf Kristian Berge, Giulia Chiesa
SCOPE: Antarctic krill is a great source of n-3 fatty acids and high-quality proteins. Aim of the study was to evaluate the effect of Antarctic krill components on plasma lipids and atherosclerosis development. METHODS AND RESULTS: Sixty apoEKO mice were divided into four groups and fed Western diet (CONTROL) or Western-like diets, differing for protein or fat content. Specifically, casein or fat in CONTROL was partially replaced by krill proteins (PRO), krill oil (KRILL OIL), or both (KRILL OIL+PRO)...
August 15, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28567037/modulation-of-the-gut-microbiota-by-krill-oil-in-mice-fed-a-high-sugar-high-fat-diet
#4
Chenyang Lu, Tingting Sun, Yanyan Li, Dijun Zhang, Jun Zhou, Xiurong Su
Multiple lines of evidence suggest that the gut microbiota plays vital roles in metabolic diseases such as hyperlipidemia. Previous studies have confirmed that krill oil can alleviate hyperlipidemia, but the underlying mechanism remains unclear. To discern whether krill oil changes the structure of the gut microbiota during the hyperlipidemia treatment, 72 mice were acclimatized with a standard chow diet for 2 weeks and then randomly allocated to receive a standard chow diet (control group, n = 12) or a high-sugar-high-fat (HSHF) diet supplemented with a low (100 μg/g·d, HSHF+LD group, n = 12), moderate (200 μg/g·d, HSHF+MD group, n = 12) or high dosage of krill oil (600 μg/g·d, HSHF+HD group, n = 12), simvastatin (HSHF+S group, n = 12) or saline (HSHF group, n = 12) continuously for 12 weeks...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28530595/comparison-of-solvents-for-extraction-of-krill-oil-from-krill-meal-lipid-yield-phospholipids-content-fatty-acids-composition-and-minor-components
#5
COMPARATIVE STUDY
Dan Xie, Jun Jin, Jiang Sun, Li Liang, Xiaosan Wang, Wei Zhang, Xingguo Wang, Qingzhe Jin
The effects of seven different extraction solvents (ethanol, isopropanol, acetone, ethyl acetate, isohexane, n-hexane, and subcritical butane) on the lipid yield and quality of the oil extracted from krill meal were investigated in this study. Phospholipids (PL), fatty acids (FA) composition and minor components including sterols, astaxanthin, vitamin A and tocopherols in the extracted krill oil were analyzed. The results indicated that ethanol and isopropanol led to comparatively higher lipid yields (16.33 and 14...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28492670/dietary-krill-oil-enhances-neurocognitive-functions-and-modulates-proteomic-changes-in-brain-tissues-of-d-galactose-induced-aging-mice
#6
Ling-Zhi Cheong, Tingting Sun, Yanyan Li, Jun Zhou, Chenyang Lu, Ye Li, Zhongbai Huang, Xiurong Su
The effects of dietary krill oil on neurocognitive functions and proteomic changes in brain tissues of d-galactose-induced aging mice were evaluated. Dietary krill oil enhanced the neurocognitive functions of aging mice with a significant (P < 0.05) decrease in escape latency and an increase in the number of times of crossing over the hidden platform during the Morris water maze test. Krill oil was also found to protect against oxidative damage, lipid peroxidation and neurodegenerative diseases. Oxidative stress biomarkers of aging mice administered with krill oil showed significant (P < 0...
May 24, 2017: Food & Function
https://www.readbyqxmd.com/read/28371906/lipid-modifying-effects-of-krill-oil-in-humans-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#7
Sorin Ursoniu, Amirhossein Sahebkar, Maria-Corina Serban, Diana Antal, Dimitri P Mikhailidis, Arrigo Cicero, Vasilios Athyros, Manfredi Rizzo, Jacek Rysz, Maciej Banach
Context: Some experimental and clinical trials have shown that krill oil, extracted from small red crustaceans, might be an effective lipid-modifying agent, but the evidence is not conclusive. Objective: The effect of krill oil supplements on plasma lipid concentrations was assessed through a systematic review of the literature and a meta-analysis of available randomized controlled trials. Data sources: PubMed and Scopus were searched up to March 25, 2016, to identify RCTs investigating the effect of krill oil supplements on plasma lipids...
May 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28334508/dietary-fatty-acids-influence-sperm-quality-and-function
#8
A Ferramosca, N Moscatelli, M Di Giacomo, V Zara
Recently, obesity has been linked to male infertility. In animal models the administration of a high-fat diet caused a reduction in sperm quality, by impairing gamete energy metabolism. The aim of this study was to investigate a possible effect of dietary fatty acids supplementation in the modulation of sperm energy metabolism and, in turn, in the improvement of sperm quality in rats fed a high-fat diet. Sexually mature male Sprague-Dawley rats were divided into four groups and fed for 4 weeks a standard diet (control group), a high-fat diet (enriched in 35% of fat and 15% sucrose), a high-fat diet supplemented with 2...
May 2017: Andrology
https://www.readbyqxmd.com/read/28294970/krill-oil-in-water-emulsion-protects-against-lipopolysaccharide-induced-proinflammatory-activation-of-macrophages-in-vitro
#9
Gabriel A Bonaterra, David Driscoll, Hans Schwarzbach, Ralf Kinscherf
BACKGROUND: Parenteral nutrition is often a mandatory therapeutic strategy for cases of septicemia. Likewise, therapeutic application of anti-oxidants, anti-inflammatory therapy, and endotoxin lowering, by removal or inactivation, might be beneficial to ameliorate the systemic inflammatory response during the acute phases of critical illness. Concerning anti-inflammatory properties in this setting, omega-3 fatty acids of marine origin have been frequently described. This study investigated the anti-inflammatory and LPS-inactivating properties of krill oil (KO)-in-water emulsion in human macrophages in vitro...
March 15, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28237087/e-configuration-structures-of-epa-and-dha-derived-from-euphausia-superba-and-their-significant-inhibitive-effects-on-growth-of-human-cancer-cell-lines-in-vitro
#10
Weilong Zheng, Xudong Wang, Wenjing Cao, Bowen Yang, Ying Mu, Yuesheng Dong, Zhilong Xiu
Many bioactive components such as poly-unsaturated fatty acids (e.g. EPA and DHA), phospholipids and astaxanthin are known in Antarctic krill (Euphausia superba) oil. The krill DHA and EPA are generally considered to be similar to natural ones. However, two chemical compounds which were separated from Antarctic krill oil and identified as EPA and DHA by HRESIMS and NMR acted much more effective inhibitive activities on growth of several cell lines (U937, K562, SMMC-7721, PC-3, MDA-MB-231, HL60 and MCF-7) than those from sturgeon liver and commercial fish oil...
February 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28107816/the-time-course-of-erythrocyte-membrane-fatty-acid-concentrations-during-and-after-treatment-of-non-human-primates-with-increasing-doses-of-an-omega-3-rich-phospholipid-preparation-derived-from-krill-oil
#11
Petter-Arnt Hals, Xiaoli Wang, Fabiana Piscitelli, Vincenzo Di Marzo, Yong-Fu Xiao
BACKGROUND: A commonly used measure to reflect the intake of the long-chain omega-3 fatty acids EPA and DHA is the omega-3 index, defined as the sum of EPA + DHA as % of total fatty acids in erythrocyte membrane. When the omega-3 index changes it follows that the relative fractions of other fatty acids in the membrane are also changed. In the present study, increasing doses of a preparation of omega-3 rich phospholipids extracted from krill oil were administered orally to non-human primates for 12 weeks and the time course of EPA, DHA and 22 other fatty acids in erythrocytes was determined bi-weekly during treatment and for 8 weeks after cessation of treatment...
January 21, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28095913/effects-of-a-purified-krill-oil-phospholipid-rich-in-long-chain-omega-3-fatty-acids-on-cardiovascular-disease-risk-factors-in-non-human-primates-with-naturally-occurring-diabetes-type-2-and-dyslipidemia
#12
Petter-Arnt Hals, Xiaoli Wang, Yong-Fu Xiao
BACKGROUND: High serum levels of cholesterol, in particular low-density lipoprotein cholesterol, are considered a significant risk factor for development of cardiovascular disease. Therefore, rigorous treatment regimens with statins and other pharmaceuticals have been used extensively to reduce elevated cholesterol levels. Literature data have not clearly concluded whether long-chain omega-3 fatty acids reduce, increase or leave circulating cholesterol unaffected. In the present study a novel krill-oil derived preparation of omega-3 rich phospholipids, mainly phosphatidylcholine, was administered orally at increasing doses for 12 weeks to dyslipidemic non-human primates, and cholesterols and several other risk factors for cardiovascular disease were measured before, during and after treatment...
January 17, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28078500/effects-of-different-omega-3-sources-fish-oil-krill-oil-and-green-lipped-mussel-against-cytokine-mediated-canine-cartilage-degradation
#13
Kittisak Buddhachat, Puntita Siengdee, Siriwadee Chomdej, Kumpanart Soontornvipart, Korakot Nganvongpanit
Our purpose was to evaluate the protective effect of three marine omega-3 sources, fish oil (FO), krill oil (KO), and green-lipped mussel (GLM) against cartilage degradation. Canine cartilage explants were stimulated with either 10 ng/mL interleukin-1β (IL-1β) or IL-1β/oncostatin M (10 ng/mL each) and then treated with various concentrations of docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA; 3 and 30 μg/mL), FO, KO, or GLM (250, 500, and 1000 μg/mL) for 28 days. Gene expression was then investigated in primary canine chondrocytes...
January 11, 2017: In Vitro Cellular & Developmental Biology. Animal
https://www.readbyqxmd.com/read/28019085/zinc-rich-oysters-as-well-as-zinc-yeast-and-astaxanthin-enriched-food-improved-sleep-efficiency-and-sleep-onset-in-a-randomized-controlled-trial-of-healthy-individuals
#14
Hitomi Saito, Yoan Cherasse, Rina Suzuki, Makoto Mitarai, Fumitaka Ueda, Yoshihiro Urade
SCOPE: Zinc is an essential mineral that plays an important role in the body. We previously reported that orally feeding zinc-enriched yeast to mice induces nonrapid-eye-movement sleep. In addition, astaxanthin, an antioxidant abundant in seafood such as salmon and krill, is able to chelate minerals and may promote zinc absorption, which in return may also improve sleep. The purpose of our study was to examine the effect of zinc-rich and astaxanthin-containing food on sleep in humans...
May 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28005361/lipid-class-specific-quantitative-analysis-of-n-3-polyunsaturated-fatty-acids-in-food-supplements
#15
Laura Kutzner, Annika I Ostermann, Thade Konrad, Dieter Riegel, Stefan Hellhake, Jan Philipp Schuchardt, Nils Helge Schebb
Supplementation products containing n-3 PUFA from marine sources serve a large market. Although the amount of eicosapentaenoic acid and docosahexaenoic acid in the products is provided by the manufacturer, no or little information is available on their lipid pattern. Therefore, we quantitatively analyzed the fatty acid pattern in the lipid fractions triglycerides, phospholipids, ethyl esters, and free fatty acids in supplementation products by means of solid phase extraction and gas chromatography. Twelve products from the European and U...
January 11, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27982753/flexpro-md-a-mixture-of-krill-oil-astaxanthin-and-hyaluronic-acid-suppresses-lipopolysaccharide-induced-inflammatory-cytokine-production-through-inhibition-of-nf-%C3%AE%C2%BAb
#16
Doo Ri Park, Ryeojin Ko, Suk Hyung Kwon, Bokkee Min, Seong Ho Yun, Manh Heun Kim, John Minatelli, Stephen Hill, Soo Young Lee
FlexPro MD(®) (FP-MD), a novel multi-ingredient dietary supplement formulation, has been demonstrated to relieve knee joint pain in humans. However, the mechanisms of action responsible for the activity of FP-MD have not been elucidated. In this study, we show the anti-inflammatory effects of FP-MD in RAW264.7 macrophage cells and mice challenged with lipopolysaccharide (LPS). FP-MD significantly inhibited the mRNA levels of pro-inflammatory cytokines, including interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and IL-1β...
December 2016: Journal of Medicinal Food
https://www.readbyqxmd.com/read/27982752/krill-oil-supplementation-improves-dyslipidemia-and-lowers-body-weight-in-mice-fed-a-high-fat-diet-through-activation-of-amp-activated-protein-kinase
#17
Goowon Yang, Jihyun Lee, Sangsu Lee, Dongyun Kwak, Wonchae Choe, Insug Kang, Sung Soo Kim, Joohun Ha
Krill oil is a novel, commercially available marine oil rich in long-chain polyunsaturated omega-3 fatty acids, particularly eicosapentaenoic acid and docosahexaenoic acid. Compared with fish oil, the effects of krill oil supplementation on human health and its underlying action mechanisms are currently poorly understood. In the present study, we examined the effect of krill oil supplementation on metabolic parameters of mice fed a high-fat diet (HFD). Krill oil supplementation in mice fed a HFD for 10 weeks resulted in an ∼15% lower body weight gain and a dramatic suppression of hepatic steatosis...
December 2016: Journal of Medicinal Food
https://www.readbyqxmd.com/read/27916863/lipid-composition-of-oil-extracted-from-wasted-norway-lobster-nephrops-norvegicus-heads-and-comparison-with-oil-extracted-from-antarctic-krill-euphasia-superba
#18
Amaya Albalat, Lauren E Nadler, Nicholas Foo, James R Dick, Andrew J R Watts, Heather Philp, Douglas M Neil, Oscar Monroig
In the UK, the Norway lobster (Nephrops norvegicus) supports its most important shellfish fishery. Nephrops are sold either whole, or as "tails-only" for the scampi trade. In the "tailing" process, the "head" (cephalothorax) is discarded as waste. A smaller crustacean species, the Antarctic krill Euphasia superba, represents an economically valuable industry, as its extractable oil is sold as a human dietary supplement. The aim of this study was to determine the amount and composition of the oil contained in discarded Nephrops heads and to compare its composition to the oil extracted from krill...
December 1, 2016: Marine Drugs
https://www.readbyqxmd.com/read/27862466/role-of-ammonium-in-the-ionization-of-phosphatidylcholines-during-electrospray-mass-spectrometry
#19
Michael D Rush, Richard B van Breemen
RATIONALE: Electrospray mass spectrometry methods for the analysis of phosphatidylcholines (PCs) routinely include ammonium acetate or ammonium formate in the mobile phase. In an effort to justify and optimize the use of these additives, we investigated possible functions of ammonium compounds in the ionization of PCs. METHODS: Because PCs contain a quaternary amine, the role of ammonium in neutralizing the negatively charged phosphate group was investigated by using deuterated ammonium acetate, adjusting the pH, varying the organic solvent composition, and by comparing the additives ammonium acetate, ammonium formate and ammonium bicarbonate...
February 15, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/27817918/a-randomized-double-masked-placebo-controlled-clinical-trial-of-two-forms-of-omega-3-supplements-for-treating-dry-eye-disease
#20
RANDOMIZED CONTROLLED TRIAL
Laura A Deinema, Algis J Vingrys, Chinn Yi Wong, David C Jackson, Holly R Chinnery, Laura E Downie
PURPOSE: To assess the efficacy of 2 forms of oral long-chain omega-3 (ω-3) essential fatty acid (EFA) supplements, phospholipid (krill oil) and triacylglyceride (fish oil), for treating dry eye disease (DED). DESIGN: Randomized, double-masked, placebo-controlled clinical trial. PARTICIPANTS: This study was conducted at a single site and involved 60 participants with mild to moderate DED who were randomized (1:1:1) to 1 of 3 groups: placebo (olive oil), krill oil, or fish oil supplements...
January 2017: Ophthalmology
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