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https://www.readbyqxmd.com/read/28432984/cigarette-smoke-extract-counteracts-atheroprotective-effects-of-high-laminar-flow-on-endothelial-function
#1
Sindy Giebe, Natalia Cockcroft, Katherine Hewitt, Melanie Brux, Anja Hofmann, Henning Morawietz, Coy Brunssen
Tobacco smoking and hemodynamic forces are key stimuli in the development of endothelial dysfunction and atherosclerosis. High laminar flow has an atheroprotective effect on the endothelium and leads to a reduced response of endothelial cells to cardiovascular risk factors compared to regions with disturbed or low laminar flow. We hypothesize that the atheroprotective effect of high laminar flow could delay the development of endothelial dysfunction caused by cigarette smoking. Primary human endothelial cells were stimulated with increasing dosages of aqueous cigarette smoke extract (CSEaq)...
April 7, 2017: Redox Biology
https://www.readbyqxmd.com/read/28432951/microbial-communities-in-the-functional-areas-of-a-biofilm-reactor-with-anaerobic-aerobic-process-for-oily-wastewater-treatment
#2
Jianhua Li, Shanshan Sun, Ping Yan, Li Fang, Yang Yu, Yangdong Xiang, Di Wang, Yejing Gong, Yanjun Gong, Zhongzhi Zhang
Microbial communities in the functional areas of biofilm reactors with large height-diameter ratio using the anaerobic-aerobic (A/O) reflux process was investigated to treat heavy oil refinery wastewater without pretreatment. In the process, chemical oxygen demand (COD) and total nitrogen (TN) removal reached 93.2% and 82.8%, and the anaerobic biofilm reactor was responsible for 95% and 99%, respectively. Areas for hydrolysis acidification and acetic acid production, methane production, and COD recovery were obvious in the anaerobic reactor...
April 10, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28432947/pretreatment-of-eucalyptus-in-biphasic-system-for-furfural-production-and-accelerated-enzymatic-hydrolysis
#3
Xiudong Zhang, Yuanyuan Bai, Xuefei Cao, Runcang Sun
Herein, an efficient biphasic pretreatment process was developed to improve the production of furfural (FF) and glucose from Eucalyptus. The influence of formic acid and NaCl on FF production from xylose in water and various biphasic systems was investigated. Results showed that the addition of formic acid and NaCl significantly promoted the FF yield, and the biphasic system of MIBK (methyl isobutyl ketone)/water exhibited the best performance for FF production. Then the Eucalyptus was pretreated in the MIBK/water system, and a maximum FF yield of 82...
April 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28432920/health-family-strains-dependency-and-life-satisfaction-of-older-adults
#4
Srinivasan Chokkanathan, Jayashree Mohanty
Using stress process theory and structural equation modelling, this study investigated the complex relationship between health status, family strain, dependency, and the life satisfaction of rural older adults with reported functional impairments in India. Data were extracted from a large-scale study of 903 randomly selected adults aged 61 years and older from 30 rural clusters of India. The sample for this study was confined to 653 older adults who reported functional impairments. Structural equation modelling showed that poor health status indirectly lowered the life satisfaction of older adults through family strains...
April 10, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28432904/optimising-multi-frame-adf-stem-for-high-precision-atomic-resolution-strain-mapping
#5
Lewys Jones, Sigurd Wenner, Magnus Nord, Per Harald Ninive, Ole Martin Løvvik, Randi Holmestad, Peter D Nellist
Annular dark-field scanning transmission electron microscopy is a powerful tool to study crystal defects at the atomic scale but historically single slow-scanned frames have been plagued by low-frequency scanning-distortions prohibiting accurate strain mapping at atomic resolution. Recently, multi-frame acquisition approaches combined with post-processing have demonstrated significant improvements in strain precision, but the optimum number of frames to record has not been explored. Here we use a non-rigid image registration procedure before applying established strain mapping methods...
April 15, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/28432886/evaluation-of-biochar-ultrafiltration-membrane-processes-for-humic-acid-removal-under-various-hydrodynamic-ph-ionic-strength-and-pressure-conditions
#6
Vaibhavi Shankar, Jiyong Heo, Yasir A J Al-Hamadani, Chang Min Park, Kyoung Hoon Chu, Yeomin Yoon
The performance of an ultrafiltration (UF)-biochar process was evaluated in comparison with a UF membrane process for the removal of humic acid (HA). Bench-scale UF experiments were conducted to study the rejection and flux trends under various hydrodynamic, pH, ionic strength, and pressure conditions. The resistance-in-series model was used to evaluate the processes and it showed that unlike stirred conditions, where low fouling resistance was observed (28.7 × 10(12) m(-1) to 32.5 × 10(12) m(-1)), higher values and comparable trends were obtained for UF-biochar and UF alone for unstirred conditions (28...
April 19, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28432755/mitochondria-and-ageing-role-in-heart-skeletal-muscle-and-adipose-tissue
#7
REVIEW
Kerstin Boengler, Maik Kosiol, Manuel Mayr, Rainer Schulz, Susanne Rohrbach
Age is the most important risk factor for most diseases. Mitochondria play a central role in bioenergetics and metabolism. In addition, several lines of evidence indicate the impact of mitochondria in lifespan determination and ageing. The best-known hypothesis to explain ageing is the free radical theory, which proposes that cells, organs, and organisms age because they accumulate reactive oxygen species (ROS) damage over time. Mitochondria play a central role as the principle source of intracellular ROS, which are mainly formed at the level of complex I and III of the respiratory chain...
April 21, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28432701/ovarian-follicle-development-and-genital-tract-characteristics-in-different-birthweight-gilts-at-150%C3%A2-days-of-age
#8
Frcl Almeida, Aln Alvarenga Dias, L P Moreira, Atl Fiúza, H Chiarini-Garcia
In the last decades, selection for improved prolificacy has resulted in higher litter sizes and has thereby increased the proportion of low birthweight (LW) piglets. It is well documented that LW piglets have lower growth performance, muscle accretion and poor carcass quality. However, little is known about the relations of birthweight with subsequent reproductive performance in gilts. This study investigated the effects of birthweight on reproductive tract and ovarian follicle development in 150-day-old gilts...
April 22, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28432657/in-vitro-assay-for-measuring-real-time-topotecan-release-from-liposomes-release-kinetics-and-cellular-internalization
#9
Roger Gilabert-Oriol, Lina Chernov, Malathi Anantha, Wieslawa H Dragowska, Marcel B Bally
Topotecan is a drug that is under investigation for the treatment of neuroblastoma and has been encapsulated into liposomes to improve its therapeutic efficacy. However, liposomal formulations still need to be optimized for drug retention and new techniques to measure drug release are required to better understand this process. Here, a novel in vitro method based on fluorescence de-quenching and an automated microscopy imaging platform were developed for monitoring, in real time, the release of topotecan from a liposomal formulation...
April 21, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/28432629/aquatic-photolysis-of-hydroxylated-polybromodiphenyl-ethers-under-direct-uv-irradiation-a-case-study-of-2-ho-bde-68
#10
Bentuo Xu, Minghong Wu, Chenyuan Pan, Yan Sun, Debao Yuan, Liang Tang, Gang Xu
Hydroxylated polyhalodiphenyl ethers (HO-PXDEs) have attracted considerable scientific interest as examples of emerging aquatic pollutants. However, a comprehensive assessment of disposal methods for this particular pollutant was seldom investigated. This study examined the UV light degradation of HO-PXDEs, using 2'-HO-2, 3', 4, 5'-tetrabromodiphenyl ether (2'-HO-BDE-68) as a case study. The results showed that UV light was superior to visible light and electron beam irradiation for producing a high degradation rate of 2'-HO-BDE-68...
April 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28432606/neuromuscular-electrostimulation-a-new-therapeutic-option-to-improve-radio-cephalic-arteriovenous-fistula-maturation-in-end-stage-chronic-kidney-disease-patients
#11
Lucia Martinez, Vicent Esteve, Montserrat Yeste, Vicent Artigas, Secundino Llagostera
BACKGROUND: Radio-cephalic arteriovenous fistula (RCAVF) is the gold standard vascular access for end-stage chronic kidney disease patients. Exercises after arteriovenous fistula (AVF) creation improve maturation. No articles are published regarding neuromuscular electrostimulation (NMES) in AVF maturation. OBJECTIVES: To assess the usefulness of a NMES programme on RCAVF maturation process. METHODS: An 8-week single-centre prospective study...
April 21, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28432565/parapharyngodon-hugoi-n-sp-a-new-nematode-oxyuroidea-pharyngodonidae-of-the-tree-frog-trachycephalus-typhonius-linnaeus-from-the-brazilian-pantanal-including-a-key-to-the-congeners-from-amphibians-of-the-american-continent
#12
Felipe B Pereira, Karla M Campião, José L Luque, Luiz E R Tavares
A new nematode Parapharyngodon hugoi n. sp. (Oxyuroidea: Pharyngodonidae) is described parasitising the large intestine of the tree frog Trachycephalus typhonius (Linnaeus) (Anura: Hylidae) from the wetlands of Pantanal, State of Mato Grosso do Sul, Brazil. The new species exhibits a unique structure of the posterior cloacal lip in males, which is supported by a rigid V-shaped structure. Parapharyngodon hylidae parasitic in hylid frogs, including T. typhonius, from Mexico, is the most similar congener to P...
April 21, 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28432556/enzymes-that-hydrolyze-adenine-nucleotides-in-a-model-of-hypercholesterolemia-induced-by-triton-wr-1339-protective-effects-of-%C3%AE-caryophyllene
#13
Matheus D Baldissera, Carine F Souza, Pedro H Doleski, Daniela B R Leal, Lenita M Stefani, Aline A Boligon, Silvia G Monteiro
Purinergic system has been proven to play a critical role in the inflammatory process and to represent an important therapeutic target to improve the immune response during hypercholesterolemia. β-caryophyllene, a phytocannabinoid compound, has a powerful hypolipidemic and anti-inflammatory actions. However, the effects of β-caryophyllene on seric enzymes of purinergic system have not been evaluated. The purpose of this study was to investigate whether β-caryophyllene is able to ameliorate the seric activities of NTPDase and adenosine deaminase (ADA) in a model of hypercholesterolemia induced by Triton WR-1339...
April 21, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28432463/malignant-transformation-of-sinonasal-inverted-papilloma-and-related-genetic-alterations-a-systematic-review
#14
REVIEW
M Re, F M Gioacchini, A Bajraktari, M Tomasetti, S Kaleci, C Rubini, A Bertini, G Magliulo, E Pasquini
Schneiderian papillomas are uncommon tumors which may develop within the nasal cavity and comprise three well-defined histological types: sinonasal inverted papilloma (SNIP), exophytic papilloma, and oncocytic papilloma. It is well known the rate of Schneiderian papilloma may also present a malignant degeneration and SNIP represents the most important subgroup in consideration of its frequency and malignant propensity. Although HPV infection is always considered the first event favoring the development of SNIP, however, it is not established as an eventual connection between viral actions and malignant transformation...
April 21, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28432429/enhanced-production-of-recombinant-proteins-by-a-small-molecule-protein-synthesis-enhancer-in-combination-with-an-antioxidant-in-recombinant-chinese-hamster-ovary-cells
#15
Joseph Camire, Dongjoo Kim, Soonjo Kwon
The improvement in the production of recombinant proteins has been linked in a number of small molecules such as carboxylic acids to the inhibition of histone deacetylase, leading to increased transcription of genes. However, carboxylic acids such as pentanoic acid and butanoic acid have been shown to promote an apoptotic response in Chinese hamster ovary (CHO) cell culture. Supplementation of cultures with antioxidants has shown the ability to reduce the apoptotic response of carboxylic acid supplementation, leading to increased therapeutic protein production...
April 21, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28432020/surface-modification-of-acetaminophen-particles-by-atomic-layer-deposition
#16
Tommi O Kääriäinen, Marianna Kemell, Marko Vehkamäki, Marja-Leena Kääriäinen, Alexandra Correia, Hélder A Santos, Luis M Bimbo, Jouni Hirvonen, Pekka Hoppu, Steven M George, David C Cameron, Mikko Ritala, Markku Leskelä
Active pharmaceutical ingredients (APIs) are predominantly organic solid powders. Due to their bulk properties many APIs require processing to improve pharmaceutical formulation and manufacturing in the preparation for various drug dosage forms. Improved powder flow and protection of the APIs are often anticipated characteristics in pharmaceutical manufacturing. In this work, we have modified acetaminophen particles with atomic layer deposition (ALD) by conformal nanometer scale coatings in a one-step coating process...
April 18, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28431921/optimization-of-the-helmintex-method-for-schistosomiasis-diagnosis
#17
Vivian Favero, Renata Russo Frasca Candido, Carolina De Marco Verissimo, Malcolm K Jones, Timothy G St Pierre, Catieli Gobetti Lindholz, Vinicius Duval Da Silva, Alessandra Loureiro Morassutti, Carlos Graeff-Teixeira
A diagnostic test that is reliable, sensitive, and applicable in the field is extremely important in epidemiological surveys, during medical treatment for schistosomiasis, and for the control and elimination of schistosomiasis. The Helmintex (HTX) method is based on the use of magnetic beads to trap eggs in a magnetic field. This technique is highly sensitive, but the screening of fecal samples consumes lots of time, thus delaying the results, especially in field studies. The objective of this work was to determine the effects of incorporation of the detergent Tween-20 into the method in an attempt to decrease the final pellet volume produced by the HTX method as well as the use of ninhydrin to stain the Schistosoma mansoni eggs...
April 19, 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28431908/implementation-of-a-person-centered-medical-care-model-in-a-skilled-nursing-facility-a-pilot-evaluation
#18
Kathleen Abrahamson, Jaclyn Myers, Arif Nazir
OBJECTIVES: The objective of this study was to evaluate the feasibility and impact of implementing a person-centered medical care model for post-acute care residents within a skilled nursing facility (SNF). DESIGN: A mixed-method (qualitative and quantitative) pilot evaluation. SETTING: An 89-bed SNF located within a large midwestern city. PARTICIPANTS: Forty SNF post-acute patients admitted to the facility during a 6-month period were enrolled in the pilot evaluation...
April 18, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28431879/improvement-of-herg-romk-index-of-spirocyclic-romk-inhibitors-through-scaffold-optimization-and-incorporation-of-novel-pharmacophores
#19
Shuzhi Dong, Kelsey VanGelder, Zhi-Cai Shi, Yang Yu, Zhicai Wu, Ron Ferguson, Zack Zhiqiang Guo, Haifeng Tang, Jessica Frie, Qinghong Fu, Xin Gu, Birgit T Priest, Brande Thomas-Fowlkes, Adam Weinglass, Michael Margulis, Jessica Liu, Lee-Yuh Pai, Caryn Hampton, Robin E Haimbach, Karen Owens, Vincent Tong, Shiyao Xu, Mengwei Hu, Gloria J Zingaro, Pierre Morissette, Juliann Ehrhart, Sophie Roy, Kathleen Sullivan, Alexander Pasternak
SAR in the previously described spirocyclic ROMK inhibitor series was further evolved from lead 4 by modification of the spirocyclic core and identification of novel right-side pharmacophores. In this process, it was discovered that the spiropyrrolidinone core with the carbonyl group α to the spirocenter was preferred for potent ROMK activity. Efforts aimed at decreasing hERG affinity within the series led to the discovery of multiple novel right-hand pharmacophores including 3-methoxythiadiazole, 2-methoxypyrimidine, and pyridazinone...
March 30, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28431767/the-new-drug-conditional-approval-process-in-china-challenges-and-opportunities
#20
REVIEW
Xuefang Yao, Jinxi Ding, Yingfang Liu, Penghui Li
PURPOSE: Our aim was to characterize the newly established new drug conditional approval process in China and discuss the challenges and opportunities with respect to new drug research and development and registration. METHODS: We examined the new approval program through literature review, law analysis, and data analysis. Data were derived from published materials, such as journal articles, government publications, press releases, and news articles, along with statistical data from INSIGHT-China Pharma Databases, the China Food and Drug Administration website, the Center for Drug Evaluation website, the US Food and Drug Administration website, and search results published by Google...
April 18, 2017: Clinical Therapeutics
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