keyword
MENU ▼
Read by QxMD icon Read
search

lecithin

keyword
https://www.readbyqxmd.com/read/28934610/chitosan-lipid-nanoparticles-cs-lnps-application-to-sirna-delivery
#1
Özgül Tezgel, Anna Szarpak-Jankowska, Amandine Arnould, Rachel Auzély-Velty, Isabelle Texier
To benefit from the biocompatibility of lipid nanoparticles associated with the transfection ability of chitosan, small chitosan lipid nanoparticles (CS-LNPs) dedicated to SiRNA delivery were formulated by an easy-to-implement one-step process. Formulations of CS-LNPs (lipid core stabilized by a shell comprising phospholipids/cationic lipids and hydrophobically modified chitosan) were optimized for their physico-chemical properties (size, zeta potential, colloidal stability) according to their shell composition...
September 11, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28929769/design-and-solidification-of-fast-releasing-clofazimine-nanoparticles-for-treatment-of-cryptosporidiosis
#2
Yingyue Zhang, Jie Feng, Simon A McManus, Hoang D Lu, Kurt D Ristroph, Eugene J Cho, Ellen L Dobrijevic, Hak-Kim Chan, Robert K Prud'homme
Clofazimine, a lipophilic (log P = 7.66) riminophenazine antibiotic approved by the US Food and Drug Administration (FDA) with a good safety record, was recently identified as a lead hit for cryptosporidiosis through a high-throughput phenotypic screen. Cryptosporidiosis requires fast-acting treatment as it leads to severe symptoms which, if untreated, result in morbidity for infants and small children. Consequently, a fast-releasing oral formulation of clofazimine in a water-dispersible form for pediatric administration is highly desirable...
September 20, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28924086/ultrasound-assisted-synthesis-of-hydroxylated-soybean-lecithin-from-crude-soybean-lecithin-as-an-emulsifier
#3
Pranali P Chiplunkar, Amit P Pratap
Soybean lecithin is a by-product obtained during degumming step of crude soybean oil refining. Crude soybean lecithin (CSL) contains major amount of phospholipids (PLs) along with minor amount of acylglycerols, bioactive components, etc. Due to presence of PLs, CSL can be used as an emulsifier. Crude soybean lecithin (CSL) was utilized to synthesize hydroxylated soybean lecithin (HSL) by hydroxylation using hydrogen peroxide and catalytic amount of lactic acid to enhance the hydrophilicity and emulsifying properties of CSL...
September 15, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28918930/a-parenteral-docetaxel-loaded-lipid-microsphere-with-decreased-7-epidocetaxel-conversion-in-vitro-and-in-vivo
#4
Lifeng Luo, Xiuzhi Wang, Qiuyue Chen, Linlin Miao, Xuezhi Zhuo, Lu Liu, Jiawen Xu, Yu Zhang, Haibing He, Tian Yin, Xing Tang
The purpose of the study was to develop a parenteral docetaxel lipid microsphere to inhibit its 7-epidocetaxel conversion in vitro and in vivo. 7-epidocetaxel conversion as the main indicator was investigated to optimize the formulation and process. 10% medium-chain triglyceride/long-chain triglyceride (3:1) as the oil phase, egg lecithin E80 as the emulsifier and 0.02% NaHSO3 as the acidity regulator were selected to prepare docetaxel lipid microsphere. This study found that pH and temperature were dominant factors on the epimerization of docetaxel in lipid microsphere, and that optimum conditions were a pH of 5...
September 14, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28902784/pancreatic-stellate-cells-have-distinct-characteristics-from-hepatic-stellate-cells-and-are-not-the-unique-origin-of-collagen-producing-cells-in-the-pancreas
#5
Gen Yamamoto, Kojiro Taura, Keiko Iwaisako, Masataka Asagiri, Shinji Ito, Yukinori Koyama, Kazutaka Tanabe, Kohta Iguchi, Motohiko Satoh, Takahiro Nishio, Yukihiro Okuda, Yoshinobu Ikeno, Kenji Yoshino, Satoru Seo, Etsuro Hatano, Shinji Uemoto
OBJECTIVES: The origin of collagen-producing myofibroblasts in pancreatic fibrosis is still controversial. Pancreatic stellate cells (PSCs), which have been recognized as the pancreatic counterparts of hepatic stellate cells (HSCs), are thought to play an important role in the development of pancreatic fibrosis. However, sources of myofibroblasts other than PSCs may exist because extensive studies of liver fibrosis have uncovered myofibroblasts that did not originate from HSCs. This study aimed to characterize myofibroblasts in an experimental pancreatic fibrosis model in mice...
October 2017: Pancreas
https://www.readbyqxmd.com/read/28882064/annals-express-development-of-a-novel-fluorescent-activity-assay-for-lecithin-cholesterol-acyltransferase
#6
Toshihiro Sakurai, Akiko Sakurai, Vaisman L Boris, Takafumi Nishida, Edward Neufeld, Stephen J Demosky, Maureen L Sampson, Robert D Shamburek, Lita A Freeman, Alan T Remaley
No abstract text is available yet for this article.
January 1, 2017: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/28878397/physical-and-pharmacokinetic-characterizations-of-trans-resveratrol-t-rev-encapsulated-with-self-assembling-lecithin-based-mixed-polymeric-micelles-salmpms
#7
Tzu-Pin Li, Wan-Ping Wong, Ling-Chun Chen, Chia-Yu Su, Lih-Geeng Chen, Der-Zen Liu, Hsiu-O Ho, Ming-Thau Sheu
This study involved physical and pharmacokinetic characterizations of trans-resveratrol (t-Rev)-loaded saLMPMs which attempted to improve t-Rev's pharmacokinetic profiles and bioavailability resolving hurdles limiting its potential health benefits. The optimal formulation consisted of t-Rev, lecithin, and Pluronic(®) P123 at 5:2:20 (t-Rev-loaded PP123 saLMPMs) provided mean particle size <200 nm, encapsulation efficiency >90%, and drug loading >15%. Compared to t-Rev solubilized with HP-β-CD, t-Rev-loaded PP123 saLMPMs enhanced t-Rev's stability in PBS at RT, 4 °C, and 37 °C and in FBS at 37 °C, and retarded the in vitro release...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28876357/phosphate-solubilization-by-endophytic-bacteria-isolated-from-banana-trees
#8
Amanda D M Matos, Izabela C P Gomes, Silvia Nietsche, Adelica A Xavier, Wellington S Gomes, José A Dos Santos, Marlon C T Pereira
Forty isolates of endophytic bacteria isolated from banana tree roots were assessed as to their capacity to solubilize phosphate in a solid culture medium supplemented with different inorganic and one organic source of phosphorus. The amount of phosphorus (P) in each liquid medium was quantified, and an indirect assessment of acid phosphatase activity was performed. All assays had a fully randomized design, with three repetitions. Approximately 67.5% of the 40 isolates assessed in solid medium solubilized phosphorus from tricalcium phosphate and 7...
September 4, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28875455/albumin-conjugated-lipid-based-multilayered-nanoemulsion-improves-drug-specificity-and-anti-inflammatory-potential-at-the-spinal-cord-injury-gsite-after-intravenous-administration
#9
Xiao-Gang Chen, Fu Hua, Shou-Guo Wang, Hong-Hui Tang
Albumin-conjugated multilayered nanoemulsion (albumin-MNE) of methyl prednisolone (MP) was developed to ensure the specificity of the drug at the spinal cord injury (SCI) site. MNE was prepared by emulsification followed by ionic deposition of oppositely charged polymer followed by albumin conjugation using N-hydroxysuccinimide. Prepared nanoemulsion was characterized for particle size, polydispersity index (PDI), zeta potential (Zp), pH, viscosity, and entrapment efficiency. It was further evaluated for shape and morphological analysis, in vitro release, cell viability, and in vivo efficacy against post SCI-like conditions in terms of behavioral assessment, histopathological evaluation, and immunoflorescence assay of the histological sections showing Bax-driven apoptosis...
September 5, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28874705/serum-lysophospholipid-levels-are-altered-in-dyslipidemic-hamsters
#10
Susana Suárez-García, Antoni Caimari, Josep Maria Del Bas, Manuel Suárez, Lluís Arola
Dyslipidemias are common disorders that predispose individuals to severe diseases. It is known that healthy living habits can prevent dyslipidemias if they are diagnosed properly. Therefore, biomarkers that assist in diagnosis are essential. The aim of this study was to identify biomarkers of dyslipidemia progression, which in turn disclose its etiology. These findings will pave the way for examinations of the regulatory mechanisms involved in dyslipidemias. Hamsters were fed either a normal-fat diet (NFD) or a high-fat diet...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28873719/effect-of-chemical-composition-and-sonication-procedure-on-properties-of-food-grade-soy-lecithin-liposomes-with-added-glycerol
#11
D Taladrid, D Marín, A Alemán, I Álvarez-Acero, P Montero, M C Gómez-Guillén
The effect of two-step and five-step acetone washing of soybean lecithin (SL) on compositional properties of partially purified phosphatidylcholines (PW2 and PW5) was studied. Trace amounts of protein were detected in SL, PW2 and PW5, with a predominance of glutamic acid and aspartic acid. Increasing the number of acetone washing steps significantly reduced the total content of γ-, δ- and α-tocopherol. Similar reductions (≈90%) of neutral lipids were found in both PW2 and PW5, but the removal of free fatty acids was higher in PW5 than in PW2 (78% vs...
October 2017: Food Research International
https://www.readbyqxmd.com/read/28864357/biorelevant-drug-solubility-enhancement-modeled-by-a-linear-solvation-energy-relationship
#12
Andreas Niederquell, Martin Kuentz
It is for the pharmaceutical sciences of vital importance to understand how drugs are solubilized in biorelevant media. However, the complexity of fasted state simulated intestinal fluid (FaSSIF) has so far hampered adequate solubility modeling. The present study focuses on apparently neutral compounds at physiological pH and a linear free energy relationship is introduced for biorelevant drug solubilization. Based on literature data of 40 compounds, the Abraham solvation descriptors were calculated from chemical structure to then predict the ratio of solubility enhancement, log(SE) in FaSSIF compared to aqueous buffer solubility at pH 6...
August 29, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28842540/critical-synergistic-concentration-of-lecithin-phospholipids-improve-the-antimicrobial-activity-of-eugenol-against-escherichia-coli
#13
Haoshu Zhang, Edward G Dudley, Federico Harte
In this study, the effect of individual lecithin phospholipids on the antimicrobial properties of eugenol against E. coli C600 was investigated. We tested five major phospholipids common in soy or egg lecithin (DPPC, DSPC, DPPE, DPPA and DPPS) and one synthetic cationic phospholipid (EPC 18:0). Among six phospholipids, DPPC, DSPC, DPPE, DPPA, and the cationic 18:0 EPC showed critical synergistic concentrations that significantly improve the inactivation effect of eugenol against E. coli after 30 min of exposure...
August 25, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28821035/barley-and-yeast-%C3%AE-glucans-as-new-emulsifier-agents-for-the-development-of-aqueous-natural-antifungal-formulations
#14
Marta Salgado, Soraya Rodríguez-Rojo, María José Cocero
Barley and yeast β-glucans were selected, together with lecithin, to encapsulate resveratrol by emulsification-evaporation method to develop new and safer antifungal formulations. Different emulsification techniques were used: high-shear, high pressure and high pressure and temperature emulsification. Morphology, crystallinity, encapsulation efficiency and in vitro antifungal activity against Botrytis cinerea of the different formulations were evaluated. No significant differences between each emulsification procedure in particle size (below 90nm) and in encapsulation efficiency (70-100%) were observed; only barley β-glucan emulsions showed lower efficiency due to the formation of a gel that retained most of the active compound...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28815463/the-many-faces-and-phases-of-ceramide-and-sphingomyelin-i-single-lipids
#15
REVIEW
María Laura Fanani, Bruno Maggio
Ceramides, the simplest kind of two-chained sphingolipids, contain a single hydroxyl group in position 1 of the sphingoid base. Sphingomyelins further contain a phosphocholine group at the OH of position 1 of ceramide. Ceramides and sphingomyelins show a variety of species depending on the fatty acyl chain length, hydroxylation, and unsaturation. Because of the relatively high transition temperature of sphingomyelin compared to lecithin and, particularly, of ceramides with 16:0-18:0 saturated chains, a widespread idea on their functional importance refers to formation of rather solid domains enriched in sphingomyelin and ceramide...
August 16, 2017: Biophysical Reviews
https://www.readbyqxmd.com/read/28796777/surface-active-properties-of-lipid-nanocapsules
#16
Celia R A Mouzouvi, Anita Umerska, André K Bigot, Patrick Saulnier
Lipid nanocapsules (LNCs) are biomimetic nanocarriers used for the encapsulation of a broad variety of active ingredients. Similar to surface active compounds, LNCs contain both hydrophilic and hydrophobic parts in their structure. Moreover, the components of LNCs, macrogol 15 hydroxystearate (MHS) and lecithin, are known for their surface active properties. Therefore, the aim of this paper was to investigate the capability of the LNCs to decrease surface tension using two techniques: drop tensiometry and the Wilhelmy plate method...
2017: PloS One
https://www.readbyqxmd.com/read/28795592/semi-synthetic-thymoquinone-analogs-new-prototypes-as-potential-antihyperlipidemics-in-irradiated-rats
#17
Nashwa H Zaher, Engy R Rashed, Mona A El-Ghazaly
AIM: Thymoquinone (TQ), has been reported to possess strong antihyperlipidemic properties. However, a variety of serious side effects has been reported for TQ. The present study aimed to evaluate the potential antihyperlipidemic activity of newly synthesized TQ analogs. METHODS & RESULTS: first, novel TQ derivatives were studied against radiation-induced dyslipidemia in male rats. Second, the most promising sulfur derivatives (4-7), were further tested to elucidate their possible mechanism(s) of actions...
August 10, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/28794316/highly-viscoelastic-reverse-wormlike-micellar-systems-from-a-mixture-of-lecithin-polyglycerol-fatty-acid-monoesters-and-an-oil
#18
Kaname Hashizaki, Miko Imai, Shuhei Yako, Hitomi Tsusaka, Yuichi Sakanishi, Yoshihiro Saito, Makiko Fujii
We report new lecithin reverse wormlike micelles with high viscoelasticity formed using lecithin/polyglycerol fatty acid monoester (PGLFA)/oil systems. In this study, the influence of the amphiphilicity (i.e., hydrophile-lipophile balance, HLB) of PGLFA on the phase behavior and rheological properties of reverse wormlike micelles was investigated in detail. PGLFAs with degrees of polymerization of polyglycerol varying between 6-40 and constituent fatty acids with chains between 6-18 carbon atoms long were used...
August 8, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28794309/enteral-formula-containing-egg-yolk-lecithin-improves-diarrhea
#19
Tetsuro Akashi, Ayano Muto, Yayoi Takahashi, Hiroshi Nishiyama
Diarrhea often occurs during enteral nutrition. Recently, several reports showed that diarrhea improves by adding egg yolk lecithin, an emulsifier, in an enteral formula. Therefore, we evaluated if this combination could improve diarrhea outcomes. We retrospectively investigated the inhibitory effects on watery stools by replacing a polymeric fomula with that containing egg yolk lecithin. Then, we investigated the emulsion stability in vitro. Next, we examined the lipid absorption using different emulsifiers among bile duct-ligated rats and assessed whether egg yolk lecithin, medium-chain triglyceride, and dietary fiber can improve diarrhea outcomes in a rat model of short bowel syndrome...
August 8, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28770536/preparation-and-in-vivo-evaluation-of-lecithin-based-microparticles-for-topical-delivery-of-minoxidil
#20
Hyo-Jung Lee, Dong-Won Oh, Min-Ju Na, Dong-Wook Kim, Dong-Yeon Yuk, Hyoung-Chul Choi, Yong-Beom Lee, Kun Han, Chun-Woong Park
Minoxidil is widely used for treatment of androgenic alopecia. Commercial products containing minoxidil are usually in solution form. Repeated applications of minoxidil solution can lead to adverse effects such as skin irritation and horniness. The aims of this study were to prepare lecithin-based microparticle in minoxidil solution for enhancement of minoxidil topical delivery and skin protection and evaluate the ability of lecithin on in vitro delivery, in vivo hair growth, and skin trouble improvement compared to commercial minoxidil solution...
August 2, 2017: Archives of Pharmacal Research
keyword
keyword
61976
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"