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https://www.readbyqxmd.com/read/28390660/isotopic-niches-of-fin-whales-from-the-mediterranean-sea-and-the-celtic-sea-north-atlantic
#1
Krishna Das, Ophélie Holleville, Conor Ryan, Simon Berrow, Anita Gilles, Denis Ody, Loïc N Michel
The fin whale (Balaenoptera physalus) is the most abundant and widespread mysticete species in the Mediterranean Sea, found mostly in deep, offshore waters of the western and central portion of the region. In the Mediterranean, this species is known to feed mainly on krill, in contrast to its Atlantic counterpart, which displays a more diversified diet. The International Whaling Commission recognizes several managements units in the Atlantic and the Mediterranean Sea and the connectivity between these populations is still being debated...
March 27, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28371906/lipid-modifying-effects-of-krill-oil-in-humans-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#2
Sorin Ursoniu, Amirhossein Sahebkar, Maria-Corina Serban, Diana Antal, Dimitri P Mikhailidis, Arrigo Cicero, Vasilios Athyros, Manfredi Rizzo, Jacek Rysz, Maciej Banach
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. 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. PubMed and Scopus were searched up to March 25, 2016, to identify RCTs investigating the effect of krill oil supplements on plasma lipids. Randomized controlled trials that investigated the impact of at least 2 weeks of supplementation with krill oil on plasma/serum concentrations of at least one of the main lipid parameters (ie, total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, or triglycerides) and that reported sufficient information on plasma/serum lipid levels at baseline and at the end of study in both krill oil and control groups were eligible for inclusion...
March 22, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28362847/sexual-and-individual-foraging-segregation-in-gentoo-penguins-pygoscelis-papua-from-the-southern-ocean-during-an-abnormal-winter
#3
José C Xavier, Philip N Trathan, Filipe R Ceia, Geraint A Tarling, Stacey Adlard, Derren Fox, Ewan W J Edwards, Rui P Vieira, Renata Medeiros, Claude De Broyer, Yves Cherel
Knowledge about sexual segregation and gender-specific, or indeed individual specialization, in marine organisms has improved considerably in the past decade. In this context, we tested the "Intersexual Competition Hypothesis" for penguins by investigating the feeding ecology of Gentoo penguins during their austral winter non-breeding season. We considered this during unusual environmental conditions (i.e. the year 2009 had observations of high sea surface and air temperatures) in comparison with the long term average at Bird Island, South Georgia...
2017: PloS One
https://www.readbyqxmd.com/read/28335434/induction-of-g2m-arrest-by-flavokawain-a-a-kava-chalcone-increases-the-responsiveness-of-her2-overexpressing-breast-cancer-cells-to-herceptin
#4
Danielle D Jandial, Lauren S Krill, Lixia Chen, Chunli Wu, Yu Ke, Jun Xie, Bang H Hoang, Xiaolin Zi
HER2/neu positive breast tumors predict a high mortality and comprise 25%-30% of breast cancer. We have shown that Flavokawain A (FKA) preferentially reduces the viabilities of HER2-overexpressing breast cancer cell lines (i.e., SKBR3 and MCF7/HER2) versus those with less HER2 expression (i.e., MCF7 and MDA-MB-468). FKA at cytotoxic concentrations to breast cancer cell lines also has a minimal effect on the growth of non-malignant breast epithelial MCF10A cells. FKA induces G2M arrest in cell cycle progression of HER2-overexpressing breast cancer cell lines through inhibition of Cdc2 and Cdc25C phosphorylation and downregulation of expression of Myt1 and Wee1 leading to increased Cdc2 kinase activities...
March 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28334508/dietary-fatty-acids-influence-sperm-quality-and-function
#5
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
#6
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/28249036/humpback-whale-super-groups-a-novel-low-latitude-feeding-behaviour-of-southern-hemisphere-humpback-whales-megaptera-novaeangliae-in-the-benguela-upwelling-system
#7
Ken P Findlay, S Mduduzi Seakamela, Michael A Meÿer, Stephen P Kirkman, Jaco Barendse, David E Cade, David Hurwitz, Amy S Kennedy, Pieter G H Kotze, Steven A McCue, Meredith Thornton, O Alejandra Vargas-Fonseca, Christopher G Wilke
Southern Hemisphere humpback whales (Megaptera novaeangliae) generally undertake annual migrations from polar summer feeding grounds to winter calving and nursery grounds in subtropical and tropical coastal waters. Evidence for such migrations arises from seasonality of historic whaling catches by latitude, Discovery and natural mark returns, and results of satellite tagging studies. Feeding is generally believed to be limited to the southern polar region, where Antarctic krill (Euphausia superba) has been identified as the primary prey item...
2017: PloS One
https://www.readbyqxmd.com/read/28244496/a-comparison-of-the-rate-of-gastrointestinal-bleeding-in-patients-taking-non-vitamin-k-antagonist-oral-anticoagulants-or-warfarin
#8
David J Cangemi, Timothy Krill, Rick Weideman, Daisha J Cipher, Stuart J Spechler, Linda A Feagins
OBJECTIVES: Early reports suggested that the risk of gastrointestinal bleeding (GIB) was higher for patients on non-vitamin K antagonist oral anticoagulants (NOACs) than for those on warfarin. We compared the incidence of GIB in our patients on NOACs with those on warfarin. METHODS: We used our VA pharmacy database to identify patients taking NOACs (dabigatran, rivaroxaban, and apixaban) or warfarin between January 2011 and June 2015, and used the VistA system to identify those who were hospitalized for GIB...
February 28, 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28237569/preparation-and-characterization-of-novel-super-artificial-hair-fiber-based-on-biomass-materials
#9
Lijun Yang, Jing Guo, Sen Zhang, Yumei Gong
A novel super-artificial hair fiber basing on sodium alginate (SA) and Antarctic Krill protein (AKP) was prepared by wet spinning successfully. Such SA/AKP fiber did not only have similar crystalline structure with human hair, but also had super flame resistance and mechanical performance. It should be noted that the whole preparation process was green without any incorporation of non-toxic solution. Moreover, comparing with human hair, the SA/AKP fiber had a lot of unique groove upon the fiber surface, which contributed a lot to excellent hygroscopicity...
June 2017: International Journal of Biological Macromolecules
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/28225825/validation-of-band-counts-in-eyestalks-for-the-determination-of-age-of-antarctic-krill-euphausia-superba
#11
Raouf Kilada, Christian S Reiss, So Kawaguchi, Robert A King, Tsuyoshi Matsuda, Taro Ichii
Using known-age Antarctic krill (Euphausia superba) grown from eggs hatched at two different laboratories, we validate the annual pattern of bands deposited in the eyestalks of krill and determine the absolute age of these animals. Ages two through five years were validated, and these animals ranged from 37.1 to 62.6 mm in total length. The band counts in these individuals were either identical to their absolute ages, or only failed to agree by a few months, which demonstrates the accuracy of this method. Precision and bias were estimated graphically using Chang's index (Coefficient of Variation = 5...
2017: PloS One
https://www.readbyqxmd.com/read/28212295/short-chain-chitin-oligomers-promoters-of-plant-growth
#12
Alexander J Winkler, Jose Alfonso Dominguez-Nuñez, Inmaculada Aranaz, César Poza-Carrión, Katrina Ramonell, Shauna Somerville, Marta Berrocal-Lobo
Chitin is the second most abundant biopolymer in nature after cellulose, and it forms an integral part of insect exoskeletons, crustacean shells, krill and the cell walls of fungal spores, where it is present as a high-molecular-weight molecule. In this study, we showed that a chitin oligosaccharide of lower molecular weight (tetramer) induced genes in Arabidopsis that are principally related to vegetative growth, development and carbon and nitrogen metabolism. Based on plant responses to this chitin tetramer, a low-molecular-weight chitin mix (CHL) enriched to 92% with dimers (2mer), trimers (3mer) and tetramers (4mer) was produced for potential use in biotechnological processes...
February 15, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28193735/comprehensive-genomic-profiling-aids-in-distinguishing-metastatic-recurrence-from-second-primary-cancers
#13
Benjamin A Weinberg, Kyle Gowen, Thomas K Lee, Sai-Hong Ignatius Ou, Robert Bristow, Lauren Krill, M Isabel Almira-Suarez, Siraj M Ali, Vincent A Miller, Stephen V Liu, Samuel J Klempner
BACKGROUND: Metastatic recurrence after treatment for locoregional cancer is a major cause of morbidity and cancer-specific mortality. Distinguishing metastatic recurrence from the development of a second primary cancer has important prognostic and therapeutic value and represents a difficult clinical scenario. Advances beyond histopathological comparison are needed. We sought to interrogate the ability of comprehensive genomic profiling (CGP) to aid in distinguishing between these clinical scenarios...
February 13, 2017: Oncologist
https://www.readbyqxmd.com/read/28187156/krilldb-a-de-novo-transcriptome-database-for-the-antarctic-krill-euphausia-superba
#14
Gabriele Sales, Bruce E Deagle, Enrica Calura, Paolo Martini, Alberto Biscontin, Cristiano De Pittà, So Kawaguchi, Chiara Romualdi, Bettina Meyer, Rodolfo Costa, Simon Jarman
Antarctic krill (Euphausia superba) is a key species in the Southern Ocean with an estimated biomass between 100 and 500 million tonnes. Changes in krill population viability would have catastrophic effect on the Antarctic ecosystem. One looming threat due to elevated levels of anthropogenic atmospheric carbon dioxide (CO2) is ocean acidification (lowering of sea water pH by CO2 dissolving into the oceans). The genetics of Antarctic krill has long been of scientific interest for both for the analysis of population structure and analysis of functional genetics...
2017: PloS One
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
#15
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/28105887/light-microscopy-with-a-differential-staining-technique-for-the-characterization-and-discrimination-of-insects-versus-marine-arthropods-in-processed-animal-proteins
#16
Matteo Ottoboni, Marco Tretola, Federica Cheli, Daniela Marchis, Pascal Veys, Vincent Baeten, Luciano Pinotti
The aim of this study was to evaluate the use of light microscopy with a differential staining technique for the discrimination of insect material from marine arthropods - classified as fishmeal. Specifically, three samples of single species insect material, Hermetia illucens (HI), Bombyx mori (BM) and Tenebrio molitor (TM) and two samples of marine arthropods, shrimp material and krill, have been analysed and compared after staining by two reagents to enhance fragment identification. Alizarin Red (AR) and Chlorazol black (CB), which react respectively with calcium salts and chitin, were tested for their potential efficacy in distinguishing between insect and marine materials...
January 20, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
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
#17
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/28078684/characterization-of-protease-and-effects-of-temperature-and-salinity-on-the-biochemical-changes-during-fermentation-of-antarctic-krill
#18
Yan Fan, Lili Tian, Yong Xue, Zhaojie Li, Hu Hou, Changhu Xue
BACKGROUND: Despite their abundance, the Antarctic krill are underutilized for numerous difficulties in commercial processing. Ideally, fermentation technology can be applied to transform them into a popular condiment. Besides the exploration on protease properties, this study aimed to evaluate proteinase activities, pH of the fermentation broth, amino nitrogen, and histamine formed during fermentation at different temperatures and salt treatments. RESULTS: Even though activity of the Antarctic krill protease reached a maximum at 40 °C and pH 7, it was stable at 30 °C and pH 7-9...
January 11, 2017: Journal of the Science of Food and Agriculture
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
#19
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/28068152/effect-of-exposure-type-and-timing-of-injuries-in-division-i-college-football-a-4-year-single-program-analysis
#20
Michael K Krill, James R Borchers, Joshua T Hoffman, Rachel L Tatarski, Timothy E Hewett
BACKGROUND: Football players compete with a high risk of injury due to the sport. With the recent efforts to improve safety, the National Collegiate Athletic Association (NCAA) established new terminology to clearly define exposure types and reduce the number of high contact exposures. OBJECTIVES: To compare football injury rates (IR) with a focus on game versus practice, time in season of injury, mechanism of injury and utilizing recent exposure types defined by the NCAA (live contact, full-pads and non-contact)...
January 19, 2017: Physician and Sportsmedicine
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