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https://www.readbyqxmd.com/read/27921227/-nosocomial-pneumonia-from-a%C3%A2-radiological-perspective
#1
REVIEW
P Agarwal, A Wielandner
Due to the high morbidity and mortality, nosocomial pneumonia represents a serious risk in hospitalized patients. The increased risk of infections with multidrug-resistant (MDR) pathogens makes a timely diagnosis and prompt therapy indispensable. A newly occurring or progressive infiltrate in any patient who has been hospitalized for more than 48 h should be viewed with suspicion. In contrast to community acquired pneumonia (CAP), radiography plays a limited role in the diagnosis of hospital-acquired pneumonia (HAP)...
December 5, 2016: Der Radiologe
https://www.readbyqxmd.com/read/27919850/detection-and-differentiation-of-early-hepatocellular-carcinoma-from-cirrhosis-using-ct-perfusion-in-a-rat-liver-model
#2
Jin-Ping Li, Guang-Long Feng, Da-Qing Li, Hai-Bo Wang, De-Li Zhao, Yong Wan, Hui-Jie Jiang
BACKGROUND: Functional imaging such as CT perfusion can detect morphological and hemodynamic changes in hepatocellular carcinoma (HCC). Pre-carcinoma and early HCC nodules are difficult to differentiate by observing only their hemodynamics changes. The present study aimed to investigate hemodynamic parameters and evaluate their differential diagnostic cut-off between pre-carcinoma and early HCC nodules using CT perfusion and receiver operating characteristic (ROC) curves. METHODS: Male Wistar rats were randomly divided into control (n=20) and experimental (n=70) groups...
December 2016: Hepatobiliary & Pancreatic Diseases International: HBPD INT
https://www.readbyqxmd.com/read/27919539/nanostructured-fusiform-hydroxyapatite-particles-precipitated-from-aquaculture-wastewater
#3
Covadonga Correas, Michael L Gerardo, Alexander M Lord, Michael B Ward, Enrico Andreoli, Andrew R Barron
The present work represents a new approach for the isolation of uniform nano particulate hydroxyapatite (HAp). The chemical characterization of a calcium phosphate product obtained from industrial trout farm aquaculture wastewater by two different routes, washing either with a basic aqueous medium (washNaOH) or followed by a further washing with ethanol (washEtOH), is explored. Characterization of the isolated materials includes morphology studies (SEM and TEM), structural (XRD, electron diffraction), compositional (EDX) and thermogravimetric analysis (TGA)...
December 2, 2016: Chemosphere
https://www.readbyqxmd.com/read/27916621/point-should-inhaled-antibiotic-therapy-be-routinely-used-for-the-treatment-of-bacterial-lower-respiratory-tract-infections-in-the-icu-setting-yes
#4
EDITORIAL
Richard G Wunderink
Routine use of aerosolized antibiotics is the most rational approach to the current treatment dilemmas for severe hospital-acquired pneumonia (HAP) requiring endotracheal intubation or ventilator-associated pneumonia (VAP). The two main issues for HAP/VAP are inappropriate initial therapy and ineffective therapy for multidrug resistant (MDR) pathogens, particularly gram negative bacilli such as Pseudomonas aeruginosa and Acinetobacter species. The emergence of extended spectrum beta-lactamases (ESBL) and carbapenem resistance in Enterobacteriaceae (CRE) have made even common pathogens such as Escherichia coli difficult to treat...
November 22, 2016: Chest
https://www.readbyqxmd.com/read/27916131/synthesis-of-nano-hydroxyapatite-sorbent-for-microextraction-in-packed-syringe-of-phthalate-esters-in-water-samples
#5
Amirhassan Amiri, Mohammad Chahkandi, Azadeh Targhoo
An easy alkoxide-based sol-gel method using Ca(NO3)2·4H2O and tri-ethyl phosphate (PO(OC2H5)3; TEP) precursors employed to synthesize nano-hydroxyapatite (HAP). The structural characterization of samples was studied using XRD, TEM and elemental analysis of SEM. Scherrer and Williamson-Hall equations were applied to measurement of the crystallite size distributions and micro-strain of the synthesized HAP powder. The synthesized HAP nanoparticles were applied as an efficient sorbent for the microextraction in packed syringe (MEPS) of phthalate esters (PAEs) from water samples...
January 15, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/27910930/design-of-a-hydroxyapatite-binding-antimicrobial-peptide-with-improved-retention-and-antibacterial-efficacy-for-oral-pathogen-control
#6
Zhi-Bin Huang, Xin Shi, Jing Mao, Shi-Qiang Gong
Controlling and reducing the formation of pathogenic biofilm on tooth surface is the key to the prevention and treatment of the biofilm-associated oral diseases. Antimicrobial peptides (AMPs), considered as possible future alternatives for conventional antibiotics, have been extensively studied for the control of bacterial infection. Due to the rapid dilution and degradation by human saliva, AMP preparations designed for oral use with longer retention and higher efficacy are in urgent need. To this end, a hydroxyapatite (HAp)-binding antimicrobial peptide (HBAMP), which is based on the fusion of a specific HAp-binding heptapeptide (HBP7) domain and a broad-spectrum antimicrobial peptide (KSLW) domain, has been developed in our laboratory...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27908829/exploring-the-binding-mechanism-of-heteroaryldihydropyrimidines-and-hepatitis-b-virus-capsid-combined-3d-qsar-and-molecular-dynamics
#7
Jing Tu, Jiao Jiao Li, Zhi Jie Shan, Hong Lin Zhai
The non-nucleoside drugs have been developed to treat HBV infection owing to their increased efficacy and lesser side effects, in which heteroaryldihydropyrimidines (HAPs) have been identified as effective inhibitors of HBV capsid. In this paper, the binding mechanism of HAPs targeting on HBV capsid protein was explored through three-dimensional quantitative structure-activity relationship, molecular dynamics and binding free energy decompositions. The obtained models of comparative molecular field analysis and comparative molecular similarity indices analysis enable the sufficient interpretation of structure-activity relationship of HAPs-HBV...
November 28, 2016: Antiviral Research
https://www.readbyqxmd.com/read/27908524/genetic-correlation-between-alcohol-preference-and-conditioned-fear-exploring-a-functional-relationship
#8
Julia A Chester, Marcus M Weera
Post-traumatic stress disorder (PTSD) and alcohol-use disorders have a high rate of co-occurrence, possibly because they are regulated by common genes. In support of this idea, mice selectively bred for high (HAP) alcohol preference show greater fear potentiated startle (FPS), a model for fear-related disorders such as PTSD, compared to mice selectively bred for low (LAP) alcohol preference. This positive genetic correlation between alcohol preference and FPS behavior suggests that the two traits may be functionally related...
November 23, 2016: Alcohol
https://www.readbyqxmd.com/read/27897302/structure-and-properties-of-various-hybrids-fabricated-by-silk-nanofibrils-and-nanohydroxyapatite
#9
Ruixin Mi, Yingxin Liu, Xin Chen, Zhengzhong Shao
To harvest silk fibroin (SF) based organic/inorganic composites with various general properties (e.g. hard or soft), the strategies of vacuum filtration and centrifugation were employed in this work to produce a film and hydrogel of SF-nanofibril/nanohydroxyapatite, respectively. It was found that the SF-nanofibril mediated the mineralization of hydroxyapatites (HAP) in situ and the morphology of such organic/inorganic nanohybrids presented a "flower-like" structure, mainly because of the strong interaction between SF-nanofibrils and nanohydroxyapatites...
November 29, 2016: Nanoscale
https://www.readbyqxmd.com/read/27895901/prevention-of-hospital-acquired-pneumonia-in-non-ventilated-adult-patients-a-narrative-review
#10
REVIEW
Leonor Pássaro, Stephan Harbarth, Caroline Landelle
BACKGROUND: Pneumonia is one of the leading hospital-acquired infections worldwide and has an important impact. Although preventive measures for ventilator-associated pneumonia (VAP) are well known, less is known about appropriate measures for prevention of hospital-acquired pneumonia (HAP). AIM: The purpose of this narrative review is to provide an overview of the current standards for preventing HAP in non-ventilated adult patients. METHODS: A search of the literature up to May 2015 was conducted using Medline for guidelines published by national professional societies or professional medical associations...
2016: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/27893808/common-polymorphisms-in-the-5-lipoxygenase-pathway-and-risk-of-incident-myocardial-infarction-a-danish-case-cohort-study
#11
Anders Gammelmark, Michael S Nielsen, Søren Lundbye-Christensen, Anne Tjønneland, Erik B Schmidt, Kim Overvad
BACKGROUND: The 5-lipoxygenase pathway (5-LOX) has been implicated in the development of cardiovascular disease and studies have suggested that genetic polymorphisms related to key enzymes in this pathway may confer risk of myocardial infarction (MI). This study investigated the association of pre-selected genetic polymorphisms in four candidate genes of 5-LOX (arachidonate 5-lipoxygenase and its activating protein (ALOX-5 and FLAP), leukotriene A4 hydroxylase (LTA4-H) and leukotriene C4 synthase (LTC4-S)) with incident MI...
2016: PloS One
https://www.readbyqxmd.com/read/27892541/multi-strategy-genome-wide-association-studies-identify-the-dcaf16-ncapg-region-as-a-susceptibility-locus-for-average-daily-gain-in-cattle
#12
Wengang Zhang, Junya Li, Yong Guo, Lupei Zhang, Lingyang Xu, Xue Gao, Bo Zhu, Huijiang Gao, Hemin Ni, Yan Chen
Average daily gain (ADG) is the most economically important trait in beef cattle industry. Using genome-wide association study (GWAS) approaches, previous studies have identified several causal variants within the PLAG1, NCAPG and LCORL genes for ADG in cattle. Multi-strategy GWASs were implemented in this study to improve detection and to explore the causal genes and regions. In this study, we conducted GWASs based on the genotypes of 1,173 Simmental cattle. In the SNP-based GWAS, the most significant SNPs (rs109303784 and rs110058857, P = 1...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27883412/prolonged-hospitalization-of-patients-with-hospital-acquired-pneumoniae-in-the-intensive-care-unit-%C3%A2-morbidity-mortality-and-costs-of
#13
Anna Różańska, Marta Wałaszek, Zdzisław Wolak, Małgorzata Bulanda
BACKGROUND: The objective of this study was to determine epidemiological rates of hospital-acquired pneumonia (HAP) in the Polish ICU and direct costs associated with excess length of stay incurred by the hospital. MATERIAL AND METHODS: The studied data concern patients hospitalized in the years 2010–2012 in a 9-bed ICU of a multi-profile hospital in the Małopolskie Province. Centers for Disease Control and Prevention diagnostic criteria were the basis for the development of definitions of infections...
2016: Przegla̧d Epidemiologiczny
https://www.readbyqxmd.com/read/27880068/human-hair-follicle-associated-pluripotent-hhap-stem-cells-differentiate-to-cardiac-muscle-cells
#14
Natsuko Tohgi, Koya Obara, Masateru Yashiro, Yuko Hamada, Nobuko Arakawa, Sumiyuki Mii, Ryoichi Aki, Robert M Hoffman, Yasuyuki Amoh
We have previously demonstrated that the nestin-expressing hair follicle-associated-pluripotent (HAP) stem cells are located in the bulge area. HAP stem cells have been previously shown to differentiate to neurons, glial cells, keratinocytes, smooth-muscle cells, melanocytes and cardiac-muscle cells in vitro. Subsequently, we demonstrated that HAP stem cells could effect nerve and spinal cord regeneration in mouse models, differentiating to Schwann cells and neurons. In previous studies, we established an efficient protocol for the differentiation of cardiac-muscle cells from mouse HAP stem cells...
November 23, 2016: Cell Cycle
https://www.readbyqxmd.com/read/27875332/local-electronic-structure-and-nanolevel-hierarchical-organization-of-bone-tissue-theory-and-nexafs-study
#15
A A Pavlychev, A S Avrunin, A S Vinogradov, E O Filatova, A A Doctorov, Yu S Krivosenko, D O Samoilenko, G I Svirskiy, A S Konashuk, D A Rostov
Theoretical and experimental investigations of native bone are carried out to understand relationships between its hierarchical organization and local electronic and atomic structure of the mineralized phase. The 3D superlattice model of a coplanar assembly of the hydroxyapatite (HAP) nanocrystallites separated by the hydrated nanolayers is introduced to account the interplay of short-, long- and super-range order parameters in bone tissue. The model is applied to (i) predict and rationalize the HAP-to-bone spectral changes in the electronic structure and (ii) describe the mechanisms ensuring the link of the hierarchical organization with the electronic structure of the mineralized phase in bone...
December 16, 2016: Nanotechnology
https://www.readbyqxmd.com/read/27873512/antimicrobial-resistance-and-clinical-outcomes-in-nursing-home-acquired-pneumonia-compared-to-community-acquired-pneumonia
#16
Yun Seong Kang, Soo Ryeong Ryoo, Seung Joo Byun, Yun Jeong Jeong, Jin Young Oh, Young Soon Yoon
PURPOSE: Patients with nursing home-acquired pneumonia (NHAP) should be treated as hospital-acquired pneumonia (HAP) according to guidelines published in 2005. However, controversy still exists on whether the high mortality of NHAP results from multidrug resistant pathogens or underlying disease. We aimed to outline differences and factors contributing to mortality between NHAP and community-acquired pneumonia (CAP) patients. MATERIALS AND METHODS: We retrospectively evaluated patients aged 65 years or older with either CAP or NHAP from 2008 to 2014...
January 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/27870965/a-biocompatible-and-novelly-defined-al-hap-adsorption-membrane-for-highly-effective-removal-of-fluoride-from-drinking-water
#17
Junyong He, Kai Chen, Xingguo Cai, Yulian Li, Chengming Wang, Kaisheng Zhang, Zhen Jin, Fanli Meng, Xuguang Wang, Lingtao Kong, Jinhuai Liu
A biocompatible and novelly-defined adsorption membrane for rapid removal of fluoride was prepared. Both adsorption and membrane techniques were used in this research. Al(OH)3 nanoparticles modified hydroxyapatite (Al-HAP) nanowires were developed and made into Al-HAP membrane. The adsorption data of Al-HAP adsorbent could be well described by Freundlich isotherm model while the adsorption kinetic followed pseudo-second-order model. The maximum of adsorption capacity was 93.84mg/g when the fluoride concentration was 200mg/L...
November 3, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27862430/hydroxyapatite-nanowires-metal-organic-framework-core-shell-nanofibers-templated-synthesis-peroxidase-like-activity-and-their-derived-flexible-recyclable-test-paper
#18
Fei-Fei Chen, Ying-Jie Zhu, Zhi-Chao Xiong, Tuan-Wei Sun
The templated synthesis of metal-organic framework (MOF) nanofibers has been demonstrated herein. The ultralong hydroxyapatite (HAP) nanowires are chosen as the hard template to induce the nucleation and growth of MIL-100(Fe) (one of the typical MOFs) using the layer-by-layer method. The coulomb and chelation interactions between Ca2+ ions on the surface of HAP nanowires and organic linkers (COO-) of MIL-100(Fe) play key roles in the formation process. The as-prepared water-stable hydroxyapatite nanowires@MIL-100(Fe) nanofibers show peroxidase-like activity towards the oxidation of different peroxidase substrates in the presence of H2O2 accompanied with obvious color change of the solution...
November 14, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27859871/antheraea-pernyi-silk-sericin-mediating-biomimetic-nucleation-and-growth-of-hydroxylapatite-crystals-promoting-bone-matrix-formation
#19
Zhuang Jiayao, Zhou Guanshan, Zhang Jinchi, Chen Yuyin, Zhu Yongqiang
Bone biomineralization is well-regulated processes mediated by extracellular matrix proteins. The materials that can direct nucleation of hydroxylapatite (HAp) crystals and assembly of well-structured material-minerals complex are the key to mimicking the natural mineralization. This study used sericin from Antheraea pernyi (A.pernyi), non-mulberry silkworm cocoon as template to mediate nucleation of HAp crystals. Here we find out that AS (Antheraea pernyi sericin) can nucleate the formation HAp crystals in simulated body fluid verified by XRD and FTIR observations...
November 18, 2016: Microscopy Research and Technique
https://www.readbyqxmd.com/read/27858216/inducing-triploids-and-tetraploids-with-high-temperatures-in-populus-sect-tacamahaca
#20
Liqin Guo, Wenting Xu, Yan Zhang, Jinfeng Zhang, Zunzheng Wei
This study is the first to report that triploids and tetraploids have been successfully produced through embryo sac and zygotic embryo chromosome doubling with high temperatures in P. simonii Carr. and its hybrid. A new synthetic polyploid induced by hybridization with unreduced gametes and heterozygotic embryo chromosome doubling can effectively combine polyploidy and heterosis, which can provide two major breeding advantages. In Populus, successfully creating and cultivating new polyploid varieties have economic and ecological production value...
November 17, 2016: Plant Cell Reports
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