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https://www.readbyqxmd.com/read/28636916/structural-behavior-of-the-peptaibol-harzianin-hk-vi-in-a-dmpc-bilayer-insights-from-md-simulations
#1
Marina Putzu, Sezgin Kara, Sergii Afonin, Stephan L Grage, Andrea Bordessa, Grégory Chaume, Thierry Brigaud, Anne S Ulrich, Tomáš Kubař
Microsecond molecular dynamics simulations of harzianin HK VI (HZ) interacting with a dimyristoylphosphatidylcholine bilayer were performed at the condition of low peptide-to-lipid ratio. Two orientations of HZ molecule in the bilayer were found and characterized. In the orientation perpendicular to the bilayer surface, HZ induces a local thinning of the bilayer. When inserted into the bilayer parallel to its surface, HZ is located nearly completely within the hydrophobic region of the bilayer. A combination of solid-state NMR and circular dichroism experiments found the latter orientation to be dominant...
June 20, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28636657/novel-sirna-formulation-to-effectively-knockdown-mutant-p53-in-osteosarcoma
#2
Anup K Kundu, Swathi V Iyer, Sruti Chandra, Amit S Adhikari, Tomoo Iwakuma, Tarun K Mandal
OBJECTIVES: The tumor suppressor p53 plays a crucial role in the development of osteosarcoma. The primary objective of this study is to develop and optimize lipid based nanoparticle formulations that can carry siRNA and effectively silence mutant p53 in 318-1, a murine osteosarcoma cell line. METHODS: The nanoparticles were composed of a mixture of two lipids (cholesterol and DOTAP) and either PLGA or PLGA-PEG and prepared by using an EmulsiFlex-B3 high pressure homogenizer...
2017: PloS One
https://www.readbyqxmd.com/read/28636510/the-balance-of-omega-3-polyunsaturated-fatty-acids-for-reducing-residual-risks-in-patients-with-coronary-artery-disease
#3
Yuji Nishizaki, Kazunori Shimada, Hiroyuki Daida
Residual risk, which cannot be prevented by statins alone, must be controlled for inhibiting the onset of coronary events. Omega-3 polyunsaturated fatty acids (PUFAs) play an important role in controlling residual risk. The Japan eicosapentaenoic acid (EPA) Lipid Intervention Study demonstrated the inhibitory effect of high-purity EPA preparations on the residual risk of cardiovascular events. Omega-3 PUFAs inhibit coronary artery disease (CAD) through various actions, including triglyceride-lowering action...
March 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28636230/quantification-of-fatty-acids-in-erythrocytes-and-plasma-by-fast-gas-chromatography
#4
Cristina Cruz-Hernandez, Sagar K Thakkar, Isabelle Masserey-Elmelegy, William Bousi, Patric Fontannaz, Francesca Giuffrida
As a result of the heterogeneous nature of lipid classes in complex biological matrices such as plasma and erythrocytes, it is imperative to have a robust and validated methodology for fatty acid quantification. The effective method presented here combines available methodology of fast gas chromatography and an improvement of the sample preparation methodology before injection into the gas chromatograph. This methodology ensures complete transesterification and quantification of total and individual fatty acids (and not only in relative amounts) by addition of internal standards...
June 21, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28634585/high-plasma-glucagon-levels-correlate-with-waist-to-hip-ratio-suprailiac-skinfold-thickness-and-deep-subcutaneous-abdominal-and-intraperitoneal-adipose-tissue-depots-in-nonobese-asian-indian-males-with-type-2-diabetes-in-north-india
#5
Shajith Anoop, Anoop Misra, Surya Prakash Bhatt, Seema Gulati, Harsh Mahajan, Gokulraj Prabakaran
We aimed to correlate plasma glucagon levels with anthropometric measures and abdominal adipose tissue depots. Nonobese males (n = 81; BMI < 25 kg/m(2)) with T2DM of less than one-year duration and nonobese males without diabetes (n = 30) were evaluated for the following: anthropometry (BMI, waist circumference, W-HR, and truncal skinfolds), whole-body DEXA (for body fat and fat-free mass), and MRI scan (for volumes of subcutaneous abdominal adipose tissue (SCAT) including superficial and deep, intra-abdominal visceral adipose tissue (including intraperitoneal adipose tissue (IPAT), retroperitoneal adipose tissue, liver span and fatty liver, and pancreatic volume))...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28633826/optimization-and-characterization-of-ultrasound-assisted-preparation-of-curcumin-loaded-solid-lipid-nanoparticles-application-of-central-composite-design-thermal-analysis-and-x-ray-diffraction-techniques
#6
Elham Sadati Behbahani, Mehrorang Ghaedi, Mohammadreza Abbaspour, Kobra Rostamizadeh
This study is devoted to preparation of novel solid lipid nanoparticles (SLNs) for the encapsulation of curcumin which is produced by micro-emulsion and ultrasonication using stearic acid and tripalmitin as solid lipids, tween80 and span80 as surfactants. The relation between particle size and entrapment efficiency of the produced SLNs was operated by central composite design (CCD) under response likes surface method (RSM). The variables including the ratio of lipids (X1), the ratio of surfactants (X2), drug/lipid ratio (X3), time of sonication (X4) and time of homogenization (X5)...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28632766/associations-between-anthropometric-parameters-and-lipid-profiles-in-chinese-individuals-with-age-%C3%A2-40-years-and-bmi-28kg-m2
#7
Zhi Yang, Xun Ding, Jiang Liu, Peng Duan, Lian Si, Binghua Wan, Ping Tu
BACKGROUND: Lipid abnormalities are associated with overweight and obesity. Some simple anthropometric measurements such as body mass index (BMI), waist circumference (WC), waist-to-hip ratio (WHpR), and waist-to-height ratio (WHtR), may link to increased risk of dyslipidemia. However, diverse results were found in different population studies. We focused on the associations between these measurements and dyslipidemia in non-obese (BMI <28kg/m2) population aged more than 40 years. METHODS AND FINDINGS: Cross-sectional study of 4185 non-obese adults aged more than 40 years was conducted in Nanchang, Jiangxi province, China...
2017: PloS One
https://www.readbyqxmd.com/read/28628626/is-normal-tension-glaucoma-a-risk-factor-for-stroke-a-10-year-follow-up-study
#8
Meng-Sheng Lee, Li-Lin Kuo, Elise Chia-Hui Tan, Oscar K Lee
OBJECTIVES: To investigate whether patients with normal-tension glaucoma (NTG) have a higher incidence of stroke. DESIGN: A population-based retrospective cohort study based on data from the Taiwan National Health Insurance Research Database (NHIRD) from January 1, 2001, to December 31, 2010. METHODS: Data were retrospectively collected from the NHIRD. A total of 245 (20.1%) patients with a history of stroke at the time of glaucoma diagnosis were excluded, and 1,218 patients with NTG who were 20 years of age and older were identified...
2017: PloS One
https://www.readbyqxmd.com/read/28627984/diagnostic-accuracy-of-proton-magnetic-resonance-spectroscopy-and-perfusion-weighted-imaging-in-brain-gliomas-follow-up-a-single-institutional-experience
#9
Monica Anselmi, Alessia Catalucci, Valentina Felli, Valentina Vellucci, Alessandra Di Sibio, Giovanni Luca Gravina, Mario Di Staso, Ernesto Di Cesare, Carlo Masciocchi
Objectives The objective of this study was to evaluate whether proton magnetic resonance spectroscopy and perfusion magnetic resonance imaging (MRI) are able to increase diagnostic accuracy in the follow-up of brain gliomas, identifying the progression of disease before it becomes evident in the standard MRI; also to evaluate which of the two techniques has the best diagnostic accuracy. Methods Eighty-three patients with cerebral glioma (50 high-grade gliomas (HGGs), 33 low-grade gliomas (LGGs)) were retrospectively enrolled...
June 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28627268/the-significance-of-drug-to-lipid-ratio-to-the-development-of-optimized-liposomal-formulation
#10
Maria Chountoulesi, Nikolaos Naziris, Natassa Pippa, Costas Demetzos
Liposomes are considered to be one of the most extensively investigated drug delivery nanosystems. Each drug can be loaded either in the liposomal hydrophilic core or within the lipidic bilayer and delivered eventually to the proper site into the organism. There are already many marketed approved liposomal products. The development of a liposomal product is a quite complicated process, while many critical parameters have to be investigated during the preparation process. The present study deals with the drug-to-lipid ratio (D/L ratio), which is a critical process parameter, expresses the actual capacity of the liposome to accommodate the drug and can play a key role at the optimization of every liposomal formulation...
June 18, 2017: Journal of Liposome Research
https://www.readbyqxmd.com/read/28626141/dietary-starfish-oil-prevents-hepatic-steatosis-and-hyperlipidemia-in-c57bl-6n-mice-fed-high-fat-diet
#11
Fumiaki Beppu, Haoqi Li, Kazuaki Yoshinaga, Toshiharu Nagai, Akihiko Yoshinda, Atsushi Kubo, Jota Kanda, Naohiro Gotoh
Starfish oil (SO) is characterized by functional lipids, including n-3 polyunsaturated fatty acid (both in the form of triacylglycerol and in the form of phospholipid), and carotenoids, which may exert beneficial effects on metabolic disorders in obesity-associated diseases. In the present study, the effect of SO on dysregulation of lipid metabolism was examined using C57BL/6N mice treated with high-fat (HF) diet. Mice were fed HF, HF with 2% SO, or HF with 5% SO diet for 8 weeks. Weight gain, blood glucose, serum and hepatic lipid contents, and hepatic fatty acid composition were measured...
June 13, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28625506/long-term-cost-effectiveness-of-two-glp-1-receptor-agonists-for-the-treatment-of-type-2-diabetes-mellitus-in-the-italian-setting-liraglutide-versus-lixisenatide
#12
Barnaby Hunt, Nana Kragh, Ceilidh C McConnachie, William J Valentine, Maria C Rossi, Roberta Montagnoli
PURPOSE: Maintaining glycemic control is the key treatment target for patients with type 2 diabetes mellitus. In addition, the glucagon-like peptide-1 (GLP-1) receptor agonists may be associated with other favorable treatment characteristics, such as reduction in body weight and reduced risk of hypoglycemia compared with traditional diabetes interventions. The aim of the present analysis was to compare the long-term cost-effectiveness of 2 GLP-1 receptor agonists, liraglutide 1.8 mg and lixisenatide 20 μg (both administered once daily), in the treatment of patients with type 2 diabetes failing to achieve glycemic control with metformin monotherapy in the Italian setting...
June 15, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28624998/efficient-conversion-of-fructose-based-biomass-into-lipids-with-trichosporon-fermentans-under-phosphate-limited-conditions
#13
Ruiqi Bao, Xiangying Wu, Sasa Liu, Tongzhou Xie, Chenxu Yu, Xinping Lin
Limiting nitrogen supply has been routinely used as the master regulator to direct lipid biosynthesis. However, this strategy does not work with nitrogen-rich substrates, such as Jerusalem artichoke (JA), a fructose-based biomass, while it is difficult to obtain a high carbon-to-nitrogen (C/N) molar ratio. In this study, an alternative strategy to promote lipid accumulation by the oleaginous yeast Trichosporon fermentans CICC 1368 was developed by limiting phosphorous supply, and this strategy was implemented with JA hydrolysate as substrate...
June 17, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28624579/epigenome-wide-association-study-identifies-methylation-sites-associated-with-liver-enzymes-and-hepatic-steatosis
#14
Jana Nano, Mohsen Ghanbari, Wenshi Wang, Paul S de Vries, Klodian Dhana, Taulant Muka, André G Uitterlinden, Joyce B J van Meurs, Albert Hofman, Oscar H Franco, Qiuwei Pan, Sarwa Darwish Murad, Abbas Dehghan
BACKGROUND & AIMS: Epigenetic mechanisms might be involved in the regulation of liver enzyme level. We aimed to identify CpG sites at which DNA methylation levels are associated with blood levels of liver enzymes and hepatic steatosis. METHODS: We conducted an epigenome-wide association study in whole blood for liver enzymes levels including gamma-glutamyl transferase (GGT), alanine aminotransferase (ALT), and aspartate aminotransferase (AST), among a discovery set of 731 participants of the Rotterdam Study and sought replication in a non-overlapping sample of 719 individuals...
June 14, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28624574/evidence-for-a-pharmacokinetic-interaction-between-eslicarbazepine-and-rosuvastatin-potential-effects-on-xenobiotic-transporters
#15
Barry E Gidal, Scott Mintzer, Matthias Schwab, Ralph Schutz, Jahnavi Kharidia, David Blum, Todd Grinnell, Soujanya Sunkaraneni
INTRODUCTION: Patients with partial-onset seizures and comorbid cardiovascular disease may concomitantly receive eslicarbazepine acetate (ESL), an antiepileptic drug, and rosuvastatin, an HMG-CoA reductase inhibitor. This study evaluated the effect of multiple-dose ESL on the pharmacokinetic (PK) parameters of a single dose of rosuvastatin in healthy subjects. METHODS: This was a Phase I, single-center, fixed-sequence, open-label study. Healthy subjects received two treatments, in sequence...
May 18, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28624218/targeted-multifunctional-lipid-eco-plasmid-dna-nanoparticles-as-efficient-non-viral-gene-therapy-for-leber-s-congenital-amaurosis
#16
Da Sun, Bhubanananda Sahu, Songqi Gao, Rebecca M Schur, Amita M Vaidya, Akiko Maeda, Krzysztof Palczewski, Zheng-Rong Lu
Development of a gene delivery system with high efficiency and a good safety profile is essential for successful gene therapy. Here we developed a targeted non-viral delivery system using a multifunctional lipid ECO for treating Leber's congenital amaurosis type 2 (LCA2) and tested this in a mouse model. ECO formed stable nanoparticles with plasmid DNA (pDNA) at a low amine to phosphate (N/P) ratio and mediated high gene transfection efficiency in ARPE-19 cells because of their intrinsic properties of pH-sensitive amphiphilic endosomal escape and reductive cytosolic release (PERC)...
June 16, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28624096/a-multiregional-randomized-evaluation-of-the-lipid-modifying-efficacy-and-tolerability-of-anacetrapib-added-to-ongoing-statin-therapy-in-patients-with-hypercholesterolemia-or-low-high-density-lipoprotein-cholesterol
#17
Christie M Ballantyne, Sukrut Shah, Aditi Sapre, Tanya B Ashraf, Sandra C Tobias, Tayfun Sahin, Ping Ye, Yugang Dong, Wayne Huey-Heng Sheu, Duk-Hyun Kang, Paulo Roberto Ferreira Rossi, Yulia Moiseeva, Ignacio Rodriguez Briones, Amy O Johnson-Levonas, Yale B Mitchel
This phase 3, multiregional, randomized, double-blind, placebo-controlled study assessed the efficacy/safety profile of anacetrapib added to ongoing therapy with statin ± other lipid-modifying therapies in patients with hypercholesterolemia who were not at their low-density lipoprotein (LDL-C) goal (as per the National Cholesterol Education Program Adult Treatment Panel III guidelines) and in those with low high-density lipoprotein cholesterol (HDL-C). Patients on a stable dose of statin ± other lipid-modifying therapies and with LDL-C ≥70 to <115, ≥100 to <145, ≥130, or ≥160 mg/dl for very high, high, moderate, or low CHD risk or at LDL-C goal (per CHD risk category) with HDL-C ≤40 mg/dl were randomized in a ratio of 1:1 to anacetrapib 100 mg (n = 290) or placebo (n = 293) for 24 weeks, followed by a 12-week off-drug phase...
April 12, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28623937/the-association-of-lipid-metabolism-relative-gene-polymorphisms-and-ischemic-stroke-in-han-and-uighur-population-of-xinjiang
#18
Yun-Hua Yue, Ling-Yun Liu, Liang Hu, You-Mei Li, Jie-Ping Mao, Xiao-Ying Yang, Na-Mu Dila
BACKGROUND: The present study is aimed to evaluate difference of lipid metabolism related gene single nucleotide polymorphisms (SNPs) with ischemic stroke (IS) in Han and Uighur population of Xinjiang, China. METHODS: Four hundred eight patients with ischemic stroke and 347 unrelated healthy individuals of age and sex matched were genotyped for Apolipoprotein A5 (ApoA5), lipoprotein lipase (LPL), Cholesteryl ester transfer protein (CETP) and low-density lipoprotein receptor (LDL-R) genes...
June 17, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28623803/oxidative-status-in-relation-to-metal-pollution-and-calcium-availability-in-pied-flycatcher-nestlings-a-calcium-manipulation-experiment
#19
Silvia Espín, Sandra Ruiz, Pablo Sánchez-Virosta, Thomas Lilley, Tapio Eeva
Metal exposure can produce oxidative stress by disrupting the prooxidant/antioxidant balance. It has been suggested that calcium (Ca) may provide protection against metal toxicity in the organism. The objective of this study is to explore the effects of Ca availability and metal pollution on oxidative stress biomarkers in pied flycatcher (Ficedula hypoleuca) nestlings. For this purpose, we performed a Ca-supplementation experiment with birds inhabiting a Ca-poor and metal-polluted area in SW Finland. An array of oxidative stress biomarkers (GSH, GSH:GSSG ratio, GPx, GST, CAT, SOD, lipid peroxidation and protein carbonylation) was measured in red blood cells...
June 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28623332/interaction-of-the-antimicrobial-peptide-aurein-1-2-and-charged-lipid-bilayer
#20
Durgesh K Rai, Shuo Qian
Aurein 1.2 is a potent antimicrobial peptide secreted by frog Litoria aurea. As a short membrane-active peptide with only 13 amino acids in sequence, it has been found to be residing on the surface of lipid bilayer and permeabilizing bacterial membranes at high concentration. However, the detail at the molecular level is largely unknown. In this study, we investigated the action of Aurein 1.2 in charged lipid bilayers composed of DMPC/DMPG. Oriented Circular Dichroism results showed that the peptide was on the surface of lipid bilayer regardless of the charged lipid ratio...
June 16, 2017: Scientific Reports
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