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lipidic emulsion

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https://www.readbyqxmd.com/read/29329150/comparison-of-iodine-density-measurement-among-dual-energy-computed-tomography-scanners-from-3-vendors
#1
Hyungjin Kim, Jin Mo Goo, Chang Kyung Kang, Kum Ju Chae, Chang Min Park
OBJECTIVES: The aims of this study were to analyze the effect of dual-energy computed tomography (DECT) scanners and fluid characteristics on iodine quantification and to calculate the measurement variability range induced by those variables. METHODS: We performed an experimental phantom study with 4 mediastinal iodine phantoms. Each phantom contained 6 tubes of different iodine concentrations (0, 1.0, 2.5, 5.0, 10.0, and 20.0 mg/mL) diluted in a specific solvent, which was water, 10% amino acid solution, 20% lipid emulsion, or 18% calcium solution, respectively...
January 12, 2018: Investigative Radiology
https://www.readbyqxmd.com/read/29327790/iron-encapsulation-in-water-in-oil-emulsions-effect-of-ferrous-sulfate-concentration-and-fat-crystal-formation-on-oxidative-stability
#2
Nattapong Prichapan, David Julian McClements, Utai Klinkesorn
Iron deficiency is a major global human health concern. Encapsulation of iron in functional food products may help to solve this problem. However, iron is highly reactive and may promote rapid lipid oxidation in fatty foods. In this study, the effect of ferrous sulfate (0.1 to 0.5 wt%) and rice bran stearin (0 or 30 wt%) on the physical properties, oxidative stability, and encapsulation efficiency of 20 wt% water-in-oil (W/O) emulsions stabilized with polyglycerol polyricinoleate was investigated. In the presence of rice bran stearin crystals in the continuous oil phase, W/O emulsions had smaller mean droplet diameters (d ∼ 250 nm) and better physical stability than its absence (d ∼ 330 nm)...
January 12, 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29326848/the-knowledge-of-eye-physicians-on-local-anesthetic-toxicity-and-intravenous-lipid-treatment-questionnaire-study
#3
Aykut Urfalıoğlu, Selma Urfalıoğlu, Gözen Öksüz
Objectives: To evaluate the knowledge of ophthalmologists regarding local anesthesia toxicity syndrome (LATS) and intravenous lipid emulsion used in treatment, and to raise awareness of this issue. Materials and Methods: A questionnaire comprising 14 questions about demographics, local anesthesia (LA) use, toxicity, and treatment methods was administered to ophthalmologists at different hospitals. Results: The study included 104 ophthalmologists (25% residents, 67...
December 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/29322140/development-of-antioxidant-gliadin-particle-stabilized-pickering-high-internal-phase-emulsions-hipes-as-oral-delivery-systems-and-the-in-vitro-digestion-fate
#4
F Z Zhou, T Zeng, S W Yin, C H Tang, D B Yuan, X Q Yang
In this paper, we demonstrate for the first time the use of gliadin particles to structure algal oil (rich in DHA) and to exert chemical stability against lipid oxidation via the Pickering high internal phase emulsion (HIPE) strategy. The gliadin/chitosan colloid particles (GCCPs) were effectively adsorbed and anchored at the algal oil-water interface. Concomitantly, the particle-coated droplets as building blocks constructed a percolating 3D-network framework, endowing Pickering HIPEs with viscoelastic and self-supporting attributes...
January 11, 2018: Food & Function
https://www.readbyqxmd.com/read/29319439/successful-management-of-minoxidil-toxicosis-in-a-dog
#5
Tyler J M Jordan, Page E Yaxley, Christine A Culler, Anusha Balakrishnan
CASE DESCRIPTION A 2-year-old sexually intact female mixed-breed dog was evaluated at an emergency hospital approximately 5 hours after ingestion of an unknown amount of over-the-counter topical hair growth promoter containing 5% minoxidil foam. Vomiting and signs of lethargy were reported by the owner, and physical examination revealed tachycardia and hypotension. No treatments were performed, and the dog was transferred to a veterinary referral hospital for management of suspected minoxidil toxicosis. CLINICAL FINDINGS On arrival at the referral hospital, the dog was tachycardic (heart rate, 200 to 220 beats/min) and hypotensive (systolic arterial blood pressure, 70 mm Hg)...
January 15, 2018: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29317226/oral-delivery-of-highly-lipophilic-poorly-water-soluble-drugs-self-emulsifying-drug-delivery-systems-sedds-to-improve-oral-absorption-and-enable-high-dose-toxicology-studies-of-a-cetp-inhibitor-in-preclinical-species
#6
Xue-Qing Chen, Theresa Ziemba, Christine Huang, Ming Chang, Carrie Xu, Jennifer X Qiao, Tammy C Wang, Heather J Finlay, Mark E Salvati, Leonard P Adam, Olafur Gudmundsson, Michael J Hageman
BMS-A is a highly lipophilic compound (clogP 10.5) with poor aqueous solubility (< 0.0001 mg/mL at pH 6.5). The compound exhibits low oral exposure when dosed as cosolvent solution formulations. The purpose of this study was to evaluate lipid-based formulations for enabling high-dose toxicology studies and enhancing toxicology margins of BMS-A in pre-GLP studies in non-rodent species. The solubility of BMS-A was screened in lipid and cosolvent/surfactant excipients and prototype formulations were developed...
January 6, 2018: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29317112/cannabinoid-disposition-after-human-intraperitoneal-use-an-insight-into-intraperitoneal-pharmacokinetic-properties-in-metastatic-cancer
#7
Catherine J Lucas, Peter Galettis, Shuzhen Song, Nadia Solowij, Stephanie E Reuter, Jennifer Schneider, Jennifer H Martin
BACKGROUND: Medicinal cannabis is prescribed under the provision of a controlled drug in the Australian Poisons Standard. However, multiple laws must be navigated in order for patients to obtain access and imported products can be expensive. Dose-response information for both efficacy and toxicity pertaining to medicinal cannabis is lacking. The pharmacokinetic properties of cannabis administered by traditional routes has been described but to date, there is no literature on the pharmacokinetic properties of an intraperitoneal cannabinoid emulsion...
January 6, 2018: Clinical Therapeutics
https://www.readbyqxmd.com/read/29306619/comparative-study-between-conventional-fasting-versus-overnight-infusion-of-lipid-or-carbohydrate-on-insulin-and-free-fatty-acids-in-obese-patients-undergoing-elective-on-pump-coronary-artery-bypass-grafting-a-prospective-randomized-trial
#8
Hisham Hosny, Mohamed Ibrahim, Wael El-Siory, Amr Abdel-Monem
OBJECTIVES: Postoperative insulin resistance represents a major component of postoperative metabolic disorder. The authors compared the effects of preoperative infusion of lipid emulsion or carbohydrate to conventional preoperative fasting on postoperative insulin and free fatty acid (FFA) levels. DESIGN: A prospective randomized double-blinded study. SETTINGS: Tertiary university hospital. PARTICIPANTS: Sixty-three patients undergoing coronary artery bypass grafting...
November 24, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29303925/local-anesthetic-systemic-toxicity-a-review-of-recent-case-reports-and-registries
#9
Marina Gitman, Michael J Barrington
This review summarizes presenting features, management, and outcomes of local anesthetic systemic toxicity (LAST) from published cases and those submitted to online registries capturing use of intravenous lipid emulsion (ILE) therapy. The results of single-center and multicenter registries and epidemiologic studies complement this information. Between March 2014 and November 2016, 47 separate cases of LAST were described in 35 peer-reviewed articles. Local anesthetic systemic toxicity events occurred as a result of penile blocks (23%), local infiltration (17%), and upper/lower extremity, torso, and neuraxial blockade...
January 5, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29298359/compatibility-of-intravenous-ibuprofen-with-lipids-and-parenteral-nutrition-for-use-as-a-continuous-infusion
#10
Jowell Garcia, Alka Garg, Yunmei Song, Ambados Fotios, Chad Andersen, Sanjay Garg
There is increasing interest to administer ibuprofen as a continuous infusion instead of a traditional bolus for treating Patent Ductus Arteriosus (PDA). However, its compatibility data with commonly used drugs in the neonatal period, including parenteral nutrition (PN) and lipids is unavailable. The aim is to determine the compatibility of intravenous ibuprofen lysine with various ANZNN parenteral nutrition consensus group standard neonatal PN formulations and lipids. The PN and lipid solutions used in a tertiary neonatal unit were obtained...
2018: PloS One
https://www.readbyqxmd.com/read/29291500/anhydrous-reverse-micelle-lecithin-nanoparticles-plga-composite-microspheres-for-long-term-protein-delivery-with-reduced-initial-burst
#11
Longkai Chen, Liling Mei, Disang Feng, Di Huang, Xin Tong, Xin Pan, Chune Zhu, Chuanbin Wu
To address the issue of initial burst release from poly (lactic-co-glycolic) acid (PLGA) microspheres prepared by water-in-oil-in-water (W/O/W) double emulsion technique, PLGA composite microspheres containing anhydrous reverse micelle (ARM) lecithin nanoparticles were developed by a modified solid-in-oil-in-water (S/O/W) technique. Bovine serum albumin (BSA) loaded ARM lecithin nanoparticles, which were obtained by initial self-assembly and subsequent lipid inversion of the lecithin vesicles, were then encapsulated into PLGA matrix by the S/O/W technique to form composite microspheres...
December 21, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29290827/local-intratracheal-delivery-of-perfluorocarbon-nanoparticles-to-lung-cancer-demonstrated-with-magnetic-resonance-multimodal-imaging
#12
Lina Wu, Xiaofei Wen, Xiance Wang, Chunan Wang, Xilin Sun, Kai Wang, Huiying Zhang, Todd Williams, Allen J Stacy, Junjie Chen, Anne H Schmieder, Gregory M Lanza, Baozhong Shen
Eighty percent of lung cancers originate as subtle premalignant changes in the airway mucosal epithelial layer of bronchi and alveoli, which evolve and penetrate deeper into the parenchyma. Liquid-ventilation, with perfluorocarbons (PFC) was first demonstrated in rodents in 1966 then subsequently applied as lipid-encapsulated PFC emulsions to improve pulmonary function in neonatal infants suffering with respiratory distress syndrome in 1996. Subsequently, PFC nanoparticles (NP) were extensively studied as intravenous (IV) vascular-constrained nanotechnologies for diagnostic imaging and targeted drug delivery applications...
2018: Theranostics
https://www.readbyqxmd.com/read/29287393/effects-of-epigallocatechin-3-gallate-incorporation-on-the-physicochemical-and-oxidative-stability-of-myofibrillar-protein-soybean-oil-emulsions
#13
Yungang Cao, Nasi Ai, Alma D True, Youling L Xiong
The dose-dependent effects of (-)-epigallocatechin-3-gallate (EGCG; at 0, 50, 100, 200, 500, and 1000 mg/L) on the physical, chemical, and oxidative stability of porcine myofibrillar protein (MP)-soybean oil emulsion systems were investigated. The results showed EGCG at all levels effectively suppressed lipid oxidation in MP emulsion composite gels during the entire chill storage (at 4 °C for 0, 3, or 7 days). The incorporation of EGCG at higher concentrations (>100 mg/L) promoted the loss of sulfhydryls, reduction of surface hydrophobicity, and aggregation and cross-linking of MP...
April 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29287345/mass-spectrometric-imaging-of-localization-of-fat-molecules-in-water-in-oil-emulsions-containing-semi-solid-fat
#14
Makoto Shiota, Yuichi Shimomura, Mariko Kotera, Shu Taira
Firstly, we report the localization analysis of the lipid components of a water-in-oil (W/O) semi-solid emulsion by mass spectrometry imaging (MSI). Uniform emulsion droplets were prepared using microchannel emulsification devices with lecithin, stearic acid-binding monoglyceride (St-MAG), and polyglycerol polyricinoleate (PGPR) as emulsifiers. The mass image gives us the localization of phosphatidylcholine (PC) in lecithin, St-MAG, tripalmitin (PPP), medium-chain triglyceride (MCT), and high-melting-point triglyceride tristearin (C18-TAG)...
April 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29261735/docosahexaenoic-acid-but-not-eicosapentaenoic-acid-improves-septic-shock-induced-arterial-dysfunction-in-rats
#15
Alexandra Boivin, Mélanie Burban, Raphaël Clere-Jehl, Pierrick Le Borgne, Hamid Merdji, Cyril Auger, Valérie Schini-Kerth, Ferhat Meziani, Julie Helms
INTRODUCTION: Long chain n-3 fatty acid supplementation may modulate septic shock-induced host response to pathogen-induced sepsis. The composition of lipid emulsions for parenteral nutrition however remains a real challenge in intensive care, depending on their fatty acid content. Because they have not been assessed yet, we aimed at determining the respective effects of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) during septic shock-induced vascular dysfunction. METHODS: In a peritonitis-induced septic shock model, rats were infused with EPA, DHA, an EPA/DHA mixture or 5% dextrose (D5) during 22 hours...
2017: PloS One
https://www.readbyqxmd.com/read/29240511/meeting-the-nutritional-needs-of-premature-babies-their-future-is-in-our-hands
#16
Arieh Riskin
The goals of early nutrition in preterm infants are to provide all the necessary vital nutrients, achieve extra-uterine growth rates similar to fetuses of the same gestational age, and support functional neurodevelopmental outcomes that are comparable to those of infants born at term. It is vital to provide nutrition that will maximally support brain growth and development, but over-feeding with accelerated growth, fat accumulation and long-term metabolic consequences should also be avoided. Because the morbidity associated with prematurity increases nutritional and energetic demands, the basic approach is of providing early intensive nutrition...
December 2, 2017: British Journal of Hospital Medicine
https://www.readbyqxmd.com/read/29239964/superior-efficacy-of-lipid-emulsion-infusion-over-serum-alkalinization-in-reversing-amitriptyline-induced-cardiotoxicity-in-guinea-pig
#17
Shogo Tsujikawa, Tadashi Matsuura, Kotaro Hori, Takashi Mori, Miyuki Kuno, Kiyonobu Nishikawa
BACKGROUND: Tricyclic antidepressants (TCAs) are a major cause of fatal drug poisoning due to their cardiotoxicity. Alkalinization by sodium bicarbonate (NaHCO3) administration, the first-line therapy for TCA-induced cardiotoxicity, can occasionally yield insufficient efficacy in severe cases. Because most TCAs are highly lipophilic, lipid emulsion may be more effective than alkalinization. However, it remains to be determined whether lipid emulsion is more beneficial than alkalinization in reversing amitriptyline-induced cardiotoxicity...
December 11, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29229528/palmitoyl-ceramide-promotes-milk-sphingomyelin-gel-phase-domains-formation-and-affects-the-mechanical-properties-of-the-fluid-phase-in-milk-sm-dopc-supported-membranes
#18
Appala Venkata Ramana Murthy, Fanny Guyomarc'h, Christelle Lopez
Ceramides are minor structural components of membranes involved in biological functions. In the milk fat globule membrane (MFGM), ceramides are susceptible to affect the lateral packing of polar lipids, especially the milk sphingomyelin (MSM). To investigate this, palmitoylceramide (PCer) was added to MSM/DOPC (dioleoylphosphatidylcholine) in order to form hydrated lipid bilayers. Differential scanning calorimetry evidenced interactions of PCer with the MSM in the solid-ordered phase to form MSM/PCer structures with a higher thermostability than MSM...
December 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29229273/mannose-functionalized-solid-lipid-nanoparticles-are-effective-in-targeting-alveolar-macrophages
#19
Ana Costa, Bruno Sarmento, Vítor Seabra
Mannose receptor is highly expressed on alveolar macrophages, being a potential target to promote the specific local drug delivery of anti-tuberculosis agents through the use of functionalized nanocarriers. In this work, isoniazid (Isn)-loaded solid lipid nanoparticles (SLN), reinforced with stearylamine (SA) were produced by double emulsion technique and further surface-functionalized with mannose in a straightforward chemical approach. Upon pre-formulation assessment, SLN close to 500 nm average size, positively charged and with association efficiency of ISN close to 50% were obtained...
December 8, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29227542/characterization-of-peanut-oil-bodies-integral-proteins-lipids-and-their-associated-phytochemicals
#20
Farah Zaaboul, Husnain Raza, Cao Chen, Yuanfa Liu
A microscopic image of a section of a peanut seed shows that oil bodies (OBs) are a small droplet of oil that is dispersed throughout the whole seed. The protein profile of peanut's OBs recovered using the aqueous extraction method at different pH was found to have 2 oleosin isoforms of 14 and 16 kDa. Moreover, OBs essential amino acids are 1.52 higher than those in the PPI. Oleic acid and linoleic acid are the major fatty acids in both cold press peanut oil and OBs regardless of pH. Tocopherol content went from 270...
December 11, 2017: Journal of Food Science
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