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lipidic emulsion

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https://www.readbyqxmd.com/read/28734741/beneficial-effects-of-tqrf-and-tq-nano-and-conventional-emulsions-on-memory-deficit-lipid-peroxidation-total-antioxidant-status-antioxidants-genes-expression-and-soluble-a%C3%AE-levels-in-high-fat-cholesterol-diet-induced-rats
#1
Norsharina Ismail, Maznah Ismail, Nur Hanisah Azmi, Muhammad Firdaus Abu Bakar, Zhang Yida, Johnson Stanslas, Dahiru Sani, Hamidon Basri, Maizaton Atmadini Abdullah
The study determined the effect of thymoquinone rich fraction (TQRF) and thymoquinone (TQ) in the forms of nano- and conventional emulsions on learning and memory, lipid peroxidation, total antioxidant status, antioxidants genes expression and soluble β-amyloid (Aβ) levels in rats fed with a high fat-cholesterol diet (HFCD). The TQRF was extracted from Nigella sativa seeds using a supercritical fluid extraction system and prepared into nanoemulsion, which later named as TQRF nanoemulsion (TQRFNE). Meanwhile, TQ was acquired commercially and prepared into thymoquinone nanoemulsion (TQNE)...
July 19, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28730443/synthesis-of-plga-lipid-hybrid-nanoparticles-for-sirna-delivery-using-the-emulsion-method-plga-peg-lipid-nanoparticles-for-sirna-delivery
#2
Lei Wang, Benjamin Griffel, Xiaoyang Xu
The effective delivery of small interfering RNA (siRNA) to tumor cells remains a challenge for applications in cancer therapy. The development of polymeric nanoparticles with high siRNA loading efficacy has shown great potential for cancer targets. Double emulsion solvent evaporation technique is a useful tool for encapsulation of hydrophilic molecules (e.g., siRNA). Here we describe a versatile platform for siRNA delivery based on PLGA-PEG-cationic lipid nanoparticles by using the double emulsion method. The resulting nanoparticles show high encapsulation efficiency for siRNA (up to 90%) and demonstrate effective downregulation of the target genes in vitro and vivo...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28727958/lipid-injectable-emulsion-survey-with-gap-analysis
#3
Michael L Christensen, Phil Ayers, Joseph I Boullata, Peggi Guenter, Kathleen M Gura, Beverly Holcombe, David S Seres, Gordon S Sacks
BACKGROUND: Lipid injectable emulsion (ILE) is an integral part of parenteral nutrition (PN), providing energy and essential fatty acids. With recent consensus recommendations for PN, clinical guidelines for ordering and preparation of PN, the U.S. Food and Drug Administration approval of new ILE products, and revised ILE labeling to include a 1.2-micron filter, a gap in current practice knowledge was apparent. MATERIALS AND METHODS: The American Society for Parenteral and Enteral Nutrition PN Safety Committee surveyed clinicians on how ILE products are prescribed, prepared, and administered to patients from neonates to adults...
July 1, 2017: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/28722754/-31-p-nmr-evidence-for-peroxide-intermediates-in-lipid-emulsion-photooxidations-phosphine-substituent-effects-in-trapping
#4
Prabhu P Mohapatra, Callistus O Chiemezie, Arina Kligman, Michele M Kim, Theresa M Busch, Timothy C Zhu, Alexander Greer
Intralipid is a lipid emulsion used in photodynamic therapy (PDT) for its light scattering and tissue-simulating properties. The purpose of this study is to determine whether or not Intralipid undergoes photooxidation, we have carried out an Intralipid peroxide trapping study using a series of phosphines [2'-dicyclohexylphosphino-2,6-dimethoxy-1,1'-biphenyl-3-sulfonate, 3-(diphenylphosphino)benzenesulfonate, triphenylphosphine-3,3',3''-trisulfonate, and triphenylphosphine]. Our new findings are as follows: (i) An oxygen atom is transferred from Intralipid peroxide to the phosphine traps in the dark, after the photooxidation of Intralipid...
July 19, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28716367/redefining-essential-fatty-acids-in-the-era-of-novel-intravenous-lipid-emulsions
#5
REVIEW
Lorenzo Anez-Bustillos, Duy T Dao, Gillian L Fell, Meredith A Baker, Kathleen M Gura, Bruce R Bistrian, Mark Puder
The essentiality of fatty acids was determined by the Burrs in the 1920s. It is commonly accepted that provision of linoleic (LA) and alpha-linolenic acids (ALA) prevents and reverses essential fatty acid deficiency (EFAD). Development of alternative injectable lipid emulsions (ILE) low in LA and ALA has raised concern about their ability to prevent EFAD. This review provides biochemical evidence coupled with observations from animal and human studies that aim to characterize which fatty acids are truly essential to prevent EFAD...
July 8, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28712532/influence-of-different-intravenous-lipid-emulsions-on-growth-development-and-laboratory-and-clinical-outcomes-in-hospitalised-paediatric-patients-a-systematic-review
#6
REVIEW
Roy-Rosshan Edward, Jacqueline K Innes, Luise V Marino, Philip C Calder
BACKGROUND & AIMS: Fats in the form of lipid emulsions (LEs) are an integral part of intravenous nutrition. The fatty acid composition of different LEs varies. The exact composition of a LE may influence cell and tissue function and clinical outcome. Currently, it is not clear which LE might be best for paediatric patients. We conducted a systematic review of the effects of different intravenous LEs in hospitalised paediatric patients. METHODS: Randomised controlled trials published in a peer reviewed journal, written in the English language, and comparing two or more different intravenous LEs in hospitalised paediatric patients were included...
July 8, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28711273/treatment-methods-following-suicidal-self-administration-of-iv-organophosphate-what-can-additional-lipid-administration-change
#7
Kenan Ahmet Turkdogan, Ali Duman, Mucahit Avcil, Ayhan Akoz, Selcuk Eren Canakcı, Burcak Kantekin
Organic phosphor compounds are highly toxic and life-threatening compounds that are widely used in agriculture, households and gardens worldwide. While oral intakes are observed frequently, toxic effects can also be seen through contract or inhalation. However, toxic cases through the parenteral route have rarely been reported. We had three main aims: first, to present a male patient who self-administered 2ml of monocrotophos intravenously to commit suicide. Our second goal was to present the current multiple treatment methods, such as fast general support, antidote treatment, lipid emulsion treatment, and plasmapheresis along with the literature...
July 8, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28710148/energy-protein-carbohydrate-and-lipid-intakes-and-their-effects-on-morbidity-and-mortality-in-critically-ill-adult-patients-a-systematic-review
#8
REVIEW
Anna Patkova, Vera Joskova, Eduard Havel, Miroslav Kovarik, Monika Kucharova, Zdenek Zadak, Miloslav Hronek
The guidelines for nutritional support in critically ill adult patients differ in various aspects. The optimal amount of energy and nutritional substrates supplied is important for reducing morbidity and mortality, but unfortunately this is not well known, because the topic is complex and every patient is individual. The aim of this review was to gather recent pertinent information concerning the nutritional support of critically ill patients in the intensive care unit (ICU) with respect to the energy, protein, carbohydrate, and lipid intakes and the effect of their specific utilization on morbidity and mortality...
July 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28709467/amitriptyline-induced-ventricular-tachycardia-a-case-report
#9
Khandker Mohammad Nurus Sabah, Abdul Wadud Chowdhury, Mohammad Shahidul Islam, Bishnu Pada Saha, Syed Rezwan Kabir, Shamima Kawser
BACKGROUND: In Bangladesh, each emergency physician faces amitriptyline overdose nearly a day. An acute cardiovascular complication, one of the worst complications is mainly responsible for the mortality in tricyclic overdose. Recently, we managed ventricular tachycardia in a young female presented with an impaired consciousness 10 h after intentionally ingesting 2500 mg amitriptyline. Here, we report it, discuss how the electrocardiography is vital to acknowledge and predict it and its' complications and also the recent update of the management of it...
July 14, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28706885/omega-3-fatty-acids-inhibit-oxidative-stress-in-a-rat-model-of-liver-regeneration
#10
Ozgur Firat, Ozer Makay, Levent Yeniay, Goksel Gokce, Cigdem Yenisey, Ahmet Coker
PURPOSE: Lipid peroxidation and consequent reactive oxygen species in the setting of oxidative stress have crucial roles in liver regeneration, which may adversely affect the regeneration itself and lead to liver failure. The aim of the current study is to investigate whether omega-3 fatty acid supplementation inhibits oxidative stress in an experimental model of liver regeneration. METHODS: Forty rats were allocated to four groups. Rats in group A received a sham operation...
July 2017: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/28705745/massive-diltiazem-and-metoprolol-overdose-rescued-with-extracorporeal-life-support
#11
James A Chenoweth, Daniel K Colby, Mark E Sutter, Joshua B Radke, Jonathan B Ford, J Nilas Young, John R Richards
The management of overdoses of cardioactive medications in the emergency department can be challenging. The reversal of severe toxicity from one or more types of cardioactive medication may fail maximal medical therapies and require extreme invasive measures such as transvenous cardiac pacing and extracorporeal life support. We present a case of massive diltiazem and metoprolol overdose refractory to maximal medical therapy, including intravenous calcium, glucagon, vasopressors, high dose insulin, and lipid emulsion...
July 6, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28703953/the-effect-of-temperature-on-in-vitro-digestibility-fat-globular-size-and-free-fatty-acid-bio-availability-in-milk-fat
#12
Michał Smoczyński
BACKGROUND: The rate at which a particular fat is digested has an effect on its bioavailability and on the lipid profile of the blood. Milk fat is a very complex mixture of triacylglycerols, resulting in a very wide melting range (from –40 to +40°C). Because temperature has a pronounced effect on the physicochemical state of milk fat (i.e. crystallisation of different fat fractions), this study analysed the bioavailability of milk fat at different temperatures. METHODS: A simplified model simulating digestion in the intestine at various temperatures was used...
April 2017: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28702650/influence-of-calcium-induced-droplet-heteroaggregation-on-the-physicochemical-properties-of-oppositely-charged-lactoferrin-coated-lutein-droplets-and-whey-protein-isolate-coated-dha-droplets
#13
Xin Li, Xu Wang, Duoxia Xu, Yanping Cao, Shaojia Wang, Bei Wang, Chengtao Wang, Baoguo Sun
The influence of calcium-induced droplet heteroaggregation on the formation and physicochemical stability of mixed lutein and DHA emulsions was studied. Heteroaggregation was induced by mixing oppositely charged lactoferrin (LF)-coated lutein and whey protein isolate (WPI)-coated DHA emulsions with different CaCl2 concentrations at pH 6.0. The droplet size, zeta-potential, transmission-physical stability and microstructure behavior (CLSM and Cryo-SEM) of single-protein emulsions and mixed emulsions were measured as a function of different CaCl2 concentrations...
July 12, 2017: Food & Function
https://www.readbyqxmd.com/read/28692439/lipid-emulsion-in-local-anesthetic-toxicity
#14
Martyn Harvey, Grant Cave
PURPOSE OF REVIEW: Enthusiasm for regional anesthesia has been driven by multimodal benefits to patient outcomes. Despite widespread awareness and improved techniques (including the increasing use of ultrasound guidance for block placement), intravascular sequestration and the attendant risk of local anesthetic systemic toxicity (LAST) remains. Intravenous lipid emulsion (ILE) for the treatment of LAST has been endorsed by anesthetic regulatory societies on the basis of animal study and human case report data...
July 7, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28688059/a-case-of-severe-refractory-hypotension-after-amlodipine-overdose
#15
Melissa Chudow, Kevin Ferguson
Calcium channel blockers (CCBs) are responsible for a substantial portion of the mortality associated with cardiovascular medication overdose cases. Amlodipine, a dihydropyridine CCB, can cause prolonged hypotension in overdose. This report describes a severe amlodipine overdose case that was refractory to multiple therapeutic approaches. A 53-year-old male presented after ingesting eighty 10 mg amlodipine tablets in a suicide attempt. The patient was initially managed with calcium boluses, glucagon, multiple vasoactive agents, lipid emulsion infusions and hyperinsulinemic euglycemic therapy...
July 7, 2017: Cardiovascular Toxicology
https://www.readbyqxmd.com/read/28685297/hemodynamic-effects-of-lipid-based-oxygen-microbubbles-via-rapid-intravenous-injection-in-rodents
#16
Katherine J Black, Andrew T Lock, Lindsay M Thomson, Alexis R Cole, Xiaoqi Tang, Brian D Polizzotti, John N Kheir
PURPOSE: Low oxygen levels, or hypoxemia, is a common cause of morbidity and mortality in critically ill patients. Hypoxemia is typically addressed by increasing the fraction of inspired oxygen, the use of mechanical ventilation, or more invasive measures. Recently, the injection of oxygen gas directly into the bloodstream by packaging it within lipid-based oxygen microbubbles (LOMs) has been explored. The purpose of this work is to examine the acute hemodynamic effects of intravenous injections of LOMs...
July 6, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28682410/fabrication-characterisation-and-stability-of-oil-in-water-emulsions-stabilised-by-solid-lipid-particles-the-role-of-particle-characteristics-and-emulsion-microstructure-upon-pickering-functionality
#17
I Zafeiri, P Smith, I T Norton, F Spyropoulos
The quest to identify and use bio-based particles with a Pickering stabilisation potential for food applications has lately been particularly substantial and includes, among other candidates, lipid-based particles. The present study investigates the ability of solid lipid particles to stabilise oil-in-water (o/w) emulsions against coalescence. Results obtained showed that emulsion stability could be achieved when low amounts (0.8 wt/wt%) of a surface active species (e.g. Tween 80 or NaCas) were used in particles' fabrication...
July 19, 2017: Food & Function
https://www.readbyqxmd.com/read/28681624/high-dose-intravenous-lipid-emulsion-affecting-successful-initiation-of-continuous-venovenous-hemofiltration-and-extracorporeal-membrane-oxygenation
#18
Jonathan H Sin, Andrew Tom, Alexander Toyoda, Nathalie Roy, Bryan D Hayes
No abstract text is available yet for this article.
July 6, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28679495/dose-selection-for-an-adjuvanted-respiratory-syncytial-virus-f-protein-vaccine-for-older-adults-based-on-humoral-and-cellular-immune-responses
#19
Judith Falloon, Keipp Talbot, Craig Curtis, John Ervin, Diane Krieger, Filip Dubovsky, Therese Takas, Jing Yu, Li Yu, Stacie L Lambert, Tonya Villafana, Mark T Esser
This is the second phase 1 study of a respiratory syncytial virus (RSV) vaccine containing RSV fusion protein (sF) adjuvanted with glucopyranosyl lipid A in 2% stable emulsion (GLA-SE). In this randomized, double-blind study (NCT02289820, clinicaltrials.gov), 261 subjects aged ≥60 years received inactivated influenza vaccine (IIV) or a vaccine containing 120 μg sF with escalating doses of GLA (1, 2.5, or 5 μg) in SE or a vaccine containing 80 μg sF with 2.5 μg GLA in SE. Subjects receiving 120 μg sF with 2...
July 5, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28662951/cd11a-and-cd49d-enhance-the-detection-of-antigen-specific-t-cells-following-human-vaccination
#20
Allison F Christiaansen, Upasna Gaur Dixit, Rhea N Coler, Anna Marie Beckmann, Steven G Reed, Patricia L Winokur, M Bridget Zimmerman, Steven M Varga, Mary E Wilson
BACKGROUND: Determining the efficacy of human vaccines that induce antigen-specific protective CD4 T cell responses against pathogens can be particularly challenging to evaluate. Surface expression of CD11a and CD49d has been shown to identify antigen-specific CD4 T cells against viral pathogens in mice. We hypothesized that CD11a and CD49d would also serve as markers of human antigen-specific T cells responding to vaccination. METHODS: A phase I vaccine trial enabled us to evaluate a novel gating strategy based on surface expression of CD11a and CD49d as a means of detecting antigen-specific, cytokine producing CD4 and CD8 T cells induced after vaccination of naïve individuals against leishmaniasis...
June 26, 2017: Vaccine
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