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https://www.readbyqxmd.com/read/28806667/hydrophobic-boron-compound-loaded-poly-l-lactide-co-glycolide-nanoparticles-for-boron-neutron-capture-therapy
#1
Issei Takeuchi, Kensuke Nomura, Kimiko Makino
Poly(DL-lactide-co-glycolide) (PLGA) has been widely used and studied because of its biocompatibility and biodegradability. Recently, the usefulness of nanoparticles using poly(L-lactide-co-glycolide) (PLLGA) having a higher glass transition temperature than PLGA was suggested. In this study, we investigated the availability of boron compound-loaded PLGA and PLLGA nanoparticles for boron neutron capture therapy (BNCT) by conducting biodistribution study using tumor-bearing mice. o-Carborane, a hydrophobic boron compound, was used as a boron carrier, and o-carborane-albumin conjugate was used as a control...
August 4, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28804684/bioresorbable-scaffold-as-a-dermal-substitute
#2
Lenon Cardoso, Marília Colturato Cleto, Maria Lourdes Peris Barbo, Andréa Rodrigues Esposito, Flavio Stillitano Orgaes, Eliana Aparecida de Rezende Duek
INTRODUCTION: Bioresorbable polymers are often used in medical procedures. Since they are biocompatible, this class of materials is a viable alternative for cases in which tissue regeneration is strongly compromised. Bioresorbable synthetic polymers may be used as membranes to support and guide cell growth through the process of tissue repair. OBJECTIVE: To assess the efficiency of a porous bioresorbable membrane Poly (L-co-DL lactic acid)-co-trimethylene carbonate, PL-co-DLA-co-TMC, as a dermal substitute associated with partial skin graft in rats...
2017: International Journal of Burns and Trauma
https://www.readbyqxmd.com/read/28797967/multipurpose-tenofovir-disoproxil-fumarate-electrospun-fibers-for-the-prevention-of-hiv-1-and-hsv-2-infections-in-vitro
#3
Kevin M Tyo, Hung R Vuong, Danial A Malik, Lee B Sims, Houda Alatassi, Jinghua Duan, Walter H Watson, Jill M Steinbach-Rankins
Sexually transmitted infections affect hundreds of millions of people worldwide. Both human immunodeficiency virus (HIV-1 and -2) and herpes simplex virus-2 (HSV-2) remain incurable, urging the development of new prevention strategies. While current prophylactic technologies are dependent on strict user adherence to achieve efficacy, there is a dearth of delivery vehicles that provide discreet and convenient administration, combined with prolonged-delivery of active agents. To address these needs, we created electrospun fibers (EFs) comprised of FDA-approved polymers, poly(lactic-co-glycolic acid) (PLGA) and poly(DL-lactide-co-ε-caprolactone) (PLCL), to provide sustained-release and in vitro protection against HIV-1 and HSV-2...
August 7, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28789952/the-tyr113his-t-c-rs1051740-and-very-slow-phenotype-of-the-ephx1-gene-alters-mirna-26b-5p-and-mirna-1207-5p-expression-in-pregnancy-a-preliminary-study
#4
Pragalathan Naidoo, Rajen N Naidoo, Prithiksha Ramkaran, Kareshma Asharam, Anil A Chuturgoon
BACKGROUND: Environmental insults and microsomal epoxide hydrolase 1 (EPHX1) single nucleotide polymorphisms (SNPs), Tyr113His T/C rs1051740 and His139Arg A/G rs2234922, aberrantly alters microRNA expression and are linked to low birthweights (LBW). OBJECTIVES: To investigate the interplay between pollution, EPHX1 SNPs and microRNAs during pregnancy and associated LBW outcomes. METHODS: South African pregnant women (n=241) were recruited in the MACE birth cohort study in Durban...
August 5, 2017: Gene
https://www.readbyqxmd.com/read/28777694/a-dual-application-poly-dl-lactic-co-glycolic-acid-plga-chitosan-composite-scaffold-for-potential-use-in-bone-tissue-engineering
#5
Yamina Boukari, Omar Qutachi, David J Scurr, Andrew P Morris, Stephen W Doughty, Nashiru Billa
The development of patient-friendly alternatives to bone-graft procedures is the driving force for new frontiers in bone tissue engineering. Poly (DL-lactic-co-glycolic acid), (PLGA) and chitosan are well-studied and easy-to-process polymers from which scaffolds can be fabricated. In this study, a novel dual-application scaffold system was formulated from porous PLGA and protein-loaded PLGA/chitosan microspheres. Physicochemical and in vitro protein release attributes were established. The therapeutic relevance, cytocompatibility with primary human mesenchymal stem cells (hMSCs) and osteogenic properties were tested...
August 4, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28756280/engineering-of-small-interfering-rna-loaded-lipidoid-poly-dl-lactic-co-glycolic-acid-hybrid-nanoparticles-for-highly-efficient-and-safe-gene-silencing-a-quality-by-design-based-approach
#6
Kaushik Thanki, Xianghui Zeng, Sarah Justesen, Sarah Tejlmann, Emily Falkenberg, Elize Van Driessche, Hanne Mørck Nielsen, Henrik Franzyk, Camilla Foged
Safety and efficacy of therapeutics based on RNA interference, e.g., small interfering RNA (siRNA), are dependent on the optimal engineering of the delivery technology, which is used for intracellular delivery of siRNA to the cytosol of target cells. We investigated the hypothesis that commonly used and poorly tolerated cationic lipids might be replaced with more efficacious and safe lipidoids as the lipid component of siRNA-loaded lipid-polymer hybrid nanoparticles (LPNs) for achieving more efficient gene silencing at lower and safer doses...
July 26, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28754704/metagenomic-analysis-of-dairy-bacteriophages-extraction-method-and-pilot-study-on-whey-samples-derived-from-using-undefined-and-defined-mesophilic-starter-cultures
#7
Musemma K Muhammed, Witold Kot, Horst Neve, Jennifer Mahony, Josué L Castro-Mejía, Lukasz Krych, Lars H Hansen, Dennis S Nielsen, Søren J Sørensen, Knut J Heller, Douwe van Sinderen, Finn K Vogensen
Despite their huge potential for characterizing the biodiversity of phages, metagenomic studies are currently not available for dairy bacteriophages, partly due to the lack of a standard procedure for phage extraction. We optimized an extraction method that allows to remove the bulk protein from whey and milk samples with losses of less than 50% of spiked phages. The protocol was applied to extract phages from whey in order to test the notion that members of Lactococcus (Lc.) lactis 936 (now Sk1virus), P335, c2 (now C2virus) and Leuconostoc phage groups are the most frequently encountered in the dairy environment...
July 28, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28742912/association-of-genetic-variants-related-to-serum-calcium-levels-with-coronary-artery-disease-and-myocardial-infarction
#8
Susanna C Larsson, Stephen Burgess, Karl Michaëlsson
Importance: Serum calcium has been associated with cardiovascular disease in observational studies and evidence from randomized clinical trials indicates that calcium supplementation, which raises serum calcium levels, may increase the risk of cardiovascular events, particularly myocardial infarction. Objective: To evaluate the potential causal association between genetic variants related to elevated serum calcium levels and risk of coronary artery disease (CAD) and myocardial infarction using mendelian randomization...
July 25, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28742409/the-effects-of-vitamin-d-and-evening-primrose-oil-co-supplementation-on-lipid-profiles-and-biomarkers-of-oxidative-stress-in-vitamin-d-deficient-women-with-polycystic-ovary-syndrome-a-randomized-double-blind-placebo-controlled-trial
#9
Khadijeh Nasri, Sedighe Akrami, Maryam Rahimi, Mohsen Taghizadeh, Masoud Behfar, Mohammad Reza Mazandaranian, Abbas Kheiry, Mohammad Reza Memarzadeh, Zatollah Asemi
PURPOSE OF THE STUDY: There was inconsistent evidence about the benefit of vitamin D plus evening primrose oil (EPO) supplement intake on lipid profiles and reduced oxidative stress among women with polycystic ovary syndrome (PCOS). The current study was performed to evaluate the effects of vitamin D plus EPO supplementation on lipid profiles and biomarkers of oxidative stress in vitamin D-deficient women with PCOS. MATERIALS AND METHODS: This randomized, double-blind, placebo-controlled trial was performed among 60 vitamin D-deficient women with PCOS...
July 25, 2017: Endocrine Research
https://www.readbyqxmd.com/read/28728911/effects-of-riluzole-on-spinal-seizure-like-activity-in-the-brainstem-spinal-cord-preparation-of-newborn-rat
#10
Shih Tien Lin, Masayuki Ohbayashi, Toshinori Yamamoto, Hiroshi Onimaru, Mari Kogo
Riluzole blocks persistent Na(+) current, inhibits generation of neuronal bursts and decreases glutamate-induced excitotoxicity. In previous studies of respiratory activity, riluzole suppressed inspiratory-related burst generation activity in rat slice or en bloc preparations. We examined riluzole's effects on inspiratory burst generation and drug-induced seizure-like activity in newborn rat en bloc preparations. Medulla-spinal cord preparations from postnatal day 0-3 Wistar rats were isolated under deep isoflurane anesthesia and were superfused with artificial cerebrospinal fluid equilibrated with 95% O2 and 5% CO2, pH 7...
July 17, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28722308/spectroscopic-discrimination-of-diastereomeric-complexes-involving-an-axially-chiral-receptor
#11
Antonello Filippi, Caterina Fraschetti, Laura Guarcini, Costantino Zazza, Tadashi Ema, Maurizio Speranza
The infrared multiphoton dissociation (IRMPD) spectra of electrospray ionization (ESI)-formed proton-bound complexes between the axially chiral multifunctional macrocycle M(aR) and d- and l-phenylalanine (P(D) and P(L) ) or d- and l-3,4-dihydroxyphenylalanine (D(D) and D(L) ) are recorded in the ν˜ =2800-3700 cm(-1) region. Whereas the diastereomeric [M(aR) ⋅H⋅P(D) ](+) and [M(aR) ⋅H⋅P(L) ](+) complexes do not show any significant spectral differences, the spectrum of [M(aR) ⋅H⋅D(D) ](+) clearly diverges from that of its [M(aR) ⋅H⋅D(L) ](+) diastereomer...
July 19, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28699068/health-and-nutritional-status-of-vegetarian-candidates-for-bariatric-surgery-and-practical-recommendations
#12
Shiri Sherf-Dagan, Keren Hod, Assaf Buch, Limor Mardy-Tilbor, Ziva Regev, Tair Ben-Porat, Nasser Sakran, David Goitein, Asnat Raziel
INTRODUCTION: Data on vegetarianism and bariatric surgery (BS) are scarce. We herein describe the health and nutritional status of vegetarian patients who plan to undergo BS and propose combined recommendations for vegetarian patients who undergo BS, based on our clinical experience and current scientific literature in both nutrition fields. METHODS: Cross-sectional analysis of a prospectively maintained database of all primary laparoscopic sleeve gastrectomies (LSG) performed at a bariatric center of excellence between January 2014 and November 2016 was carried out querying patients who declared a vegetarian or vegan lifestyle before surgery...
July 11, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28684178/expression-and-characterization-of-the-key-enzymes-involved-in-2-benzoxazolinone-degradation-by-pigmentiphaga-sp-dl-8
#13
Weiliang Dong, Kuan Liu, Jiawei Liu, Zhoukun Shi, Fengxue Xin, Wenming Zhang, Jiangfeng Ma, Hao Wu, Fei Wang, Min Jiang
In this study, the key enzymes involved in 2-benzoxazolinone (BOA) degradation by Pigmentiphaga sp. DL-8 were further verified and characterized in Escherichia coli. By codon optimization and co-expression of molecular chaperones in a combined strategy, recombinant BOA amidohydrolase (rCbaA) and 2-aminophenol (2-AP) 1,2-dioxygenase (rCnbCαCβ) were expressed and purified with the highest activity of 1934.6U·mgprotein(-1) and 32.80U·mgprotein(-1), respectively. BOA could be hydrolyzed to 2AP by rCbaA, which was further transformed to picolinic acid by rCnbCαCβ based on identified catalytic product...
June 23, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28642211/the-integrating-depression-and-diabetes-treatment-independent-study-design-and-methods-to-address-mental-healthcare-gaps-in-india
#14
A J Kowalski, S Poongothai, L Chwastiak, M Hutcheson, N Tandon, R Khadgawat, G R Sridhar, S R Aravind, B Sosale, R M Anjana, D Rao, R Sagar, N Mehta, K M V Narayan, J Unutzer, W Katon, V Mohan, M K Ali
INTRODUCTION: Depression and diabetes are highly prevalent worldwide and often co-exist, worsening outcomes for each condition. Barriers to diagnosis and treatment are exacerbated in low and middle-income countries with limited health infrastructure and access to mental health treatment. The INtegrating DEPrEssioN and Diabetes treatmENT (INDEPENDENT) study tests the sustained effectiveness and cost-effectiveness of a multi-component care model for individuals with poorly-controlled diabetes and depression in diabetes clinics in India...
June 19, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28633331/does-timing-of-antiretroviral-treatment-influence-treatment-outcomes-of-visceral-leishmaniasis-in-northwest-ethiopia
#15
Endashaw M Aderie, Ermias Diro, Rony Zachariah, Marcio Silveira da Fonseca, Charles Abongomera, Bethabile L Dolamo, Koert Ritmeijer
Background: Visceral leishmaniasis (VL) patients with HIV co-infection should receive antiretroviral treatment (ART). However, the best timing for initiation of ART is not known. Among such individuals, we assessed the influence of ART timing on VL outcomes. Methods: A retrospective cohort study was conducted in Northwest Ethiopia among VL patients starting ART between 2008 and 2015. VL outcomes were assessed by the twelfth month of starting ART, within 4 weeks of VL diagnosis or thereafter...
March 1, 2017: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28628024/-evaluation-of-dynamic-telomere-length-shortening-of-lymphocytes-in-immunocompromised-children-with-chronic-diseases-of-the-respiratory
#16
E Khalturina, I Nesterova
Nowadays it is common to observe the growth of viral-viral and viral-bacterial co-infections in children of different ages, due to dysfunction of lymphocytes (DL), which can be connected with the process of the accelerated shortening of the end structures of chromosomal telomeres, telomere length changes are described in lymphocytes of children with chronic mono-infections. The conducted study has shown the shortening of telomere lymphocytes in children with CDRT seropositive for mixed-herpes viral infections (herpes simplex virus, virus, Epstein-Barr virus and cytomegalovirus in various combinations) and for bacterial co-infections - Chlamydia trachomatis and (or) Mycoplasma pneumoniae...
May 2017: Georgian Medical News
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/28623427/blood-concentrations-of-lead-cadmium-mercury-and-their-association-with-biomarkers-of-dna-oxidative-damage-in-preschool-children-living-in-an-e-waste-recycling-area
#18
Xijin Xu, Weitang Liao, Yucong Lin, Yifeng Dai, Zhihua Shi, Xia Huo
Reactive oxygen species (ROS)-induced DNA damage occurs in heavy metal exposure, but the simultaneous effect on DNA repair is unknown. We investigated the influence of co-exposure of lead (Pb), cadmium (Cd), and mercury (Hg) on 8-hydroxydeoxyguanosine (8-OHdG) and human repair enzyme 8-oxoguanine DNA glycosylase (hOGG1) mRNA levels in exposed children to evaluate the imbalance of DNA damage and repair. Children within the age range of 3-6 years from a primitive electronic waste (e-waste) recycling town were chosen as participants to represent a heavy metal-exposed population...
June 16, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28619236/the-effect-of-isolated-soy-protein-adjunctive-with-flaxseed-oil-on-markers-of-inflammation-oxidative-stress-acute-phase-proteins-and-wound-healing-of-burn-patients-a-randomized-clinical-trial
#19
Siavash Babajafari, Masoumeh Akhlaghi, Seyed Mohammad Mazloomi, Mehdi Ayaz, Ali Noorafshan, Peyman Jafari, Abdollah Hojhabrimanesh
INTRODUCTION: The objective was to determine the effect of isolated soy protein (ISP) and flaxseed oil (FO) on inflammatory and oxidative stress indices, acute phase proteins, and wound healing of burn patients. METHODS: One hundred eighty-eight patients were assessed for eligibility in this randomized controlled trial. Of these, seventy-three eligible patients (total burn surface area 20-50%) were randomly assigned to 3 isocaloric groups, labeled as control (wheat flour+corn oil (CO)), ISP+FO, and ISP+CO, to receive these nutrients for 3 weeks...
June 12, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28617431/nicotine-protects-rat-hypoglossal-motoneurons-from-excitotoxic-death-via-downregulation-of-connexin-36
#20
Silvia Corsini, Maria Tortora, Rossana Rauti, Andrea Nistri
Motoneuron disease including amyotrophic lateral sclerosis may be due, at an early stage, to deficit in the extracellular clearance of the excitatory transmitter glutamate. A model of glutamate-mediated excitotoxic cell death based on pharmacological inhibition of its uptake was used to investigate how activation of neuronal nicotinic receptors by nicotine may protect motoneurons. Hypoglossal motoneurons (HMs) in neonatal rat brainstem slices were exposed to the glutamate uptake blocker DL-threo-β-benzyloxyaspartate (TBOA) that evoked large Ca(2+) transients time locked among nearby HMs, whose number fell by about 30% 4 h later...
June 15, 2017: Cell Death & Disease
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