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https://www.readbyqxmd.com/read/28351016/nano-enabled-paper-humidity-sensor-for-mobile-based-point-of-care-lung-function-monitoring
#1
Mitradip Bhattacharjee, Harshal B Nemade, Dipankar Bandyopadhyay
The frequency of breathing and peak flow rate of exhaled air are necessary parameters to detect chronic obstructive pulmonary diseases (COPDs) such as asthma, bronchitis, or pneumonia. We developed a lung function monitoring point-of-care-testing device (LFM-POCT) consisting of mouthpiece, paper-based humidity sensor, micro-heater, and real-time monitoring unit. Fabrication of a mouthpiece of optimal length ensured that the exhaled air was focused on the humidity-sensor. The resistive relative humidity sensor was developed using a filter paper coated with nanoparticles, which could easily follow the frequency and peak flow rate of the human breathing...
March 22, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28350965/on-monolayer-formation-of-pyrenebutyric-acid-on-graphene
#2
Malkolm Hinnemo, Jie Zhao, Patrik Ahlberg, Carl Hägglund, Viktor Djurberg, Ralph H Scheicher, Shi-Li Zhang, Zhibin Zhang
As a two-dimensional material with high charge carrier mobility, graphene may offer ultrahigh sensitivity in bio-sensing. In order to realize this, the first step is to functionalize the graphene. This is commonly done by using 1-pyrenebutyric acid (PBA) as a linker for biomolecules. However, the adsorption of PBA on graphene remains poorly understood despite reports of successful biosensor functionalized via this route. Here, the PBA adsorption on graphene is characterized through a combination of Raman spectroscopy, ab initio calculations, and spectroscopic ellipsometry...
March 28, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28350961/remediation-of-a-eutrophic-bay-in-the-baltic-sea
#3
Emil Rydin, Linda Kumblad, Fredrik Wulff, Per Larsson
Eutrophication of coastal ecosystems is a global problem that often results in bottom water oxygen deficiency and in turn promotes sediment phosphorus (P) release (A). In order to increase sediment P retention, we injected dissolved aluminum into the anoxic sediment of a eutrophic semi-enclosed bay in the Baltic Sea, thereby inhibiting P recycling and further eutrophication (B). The P concentration in the bay remained at half, as did phytoplankton biomass (C), compared to pre-treatment conditions and compared to the reference bay...
March 28, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28350927/association-of-childhood-blood-lead-levels-with-cognitive-function-and-socioeconomic-status-at-age-38-years-and-with-iq-change-and-socioeconomic-mobility-between-childhood-and-adulthood
#4
Aaron Reuben, Avshalom Caspi, Daniel W Belsky, Jonathan Broadbent, Honalee Harrington, Karen Sugden, Renate M Houts, Sandhya Ramrakha, Richie Poulton, Terrie E Moffitt
Importance: Many children in the United States and around the world are exposed to lead, a developmental neurotoxin. The long-term cognitive and socioeconomic consequences of lead exposure are uncertain. Objective: To test the hypothesis that childhood lead exposure is associated with cognitive function and socioeconomic status in adulthood and with changes in IQ and socioeconomic mobility between childhood and midlife. Design, Setting, and Participants: A prospective cohort study based on a population-representative 1972-1973 birth cohort from New Zealand; the Dunedin Multidisciplinary Health and Development Study observed participants to age 38 years (until December 2012)...
March 28, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28350860/uniquely-altered-transcripts-are-associated-with-immune-preservation-in-hiv-infection
#5
Michelle Zanoni, Ítalo Karmann Aventurato, James Hunter, Maria Cecilia Araripe Sucupira, Ricardo Sobhie Diaz
The mechanisms underlying host HIV control hold much promise in the search for a functional HIV cure. We investigated the host genomic signatures in elite controllers or rapid progressors following recent infection and the correlates of immune reconstitution during combination antiretroviral therapy. We characterized the HIV-specific longitudinal host transcriptional response of peripheral blood mononuclear cells from elite controllers, rapid progressors, immune responders and non-responders using a RT-qPCR array in a cohort of recently HIV-infected Brazilian individuals...
2017: PloS One
https://www.readbyqxmd.com/read/28350760/involvement-of-hsp70-and-ho-1-in-the-protective-effects-of-raloxifene-on-multiple-organ-dysfunction-syndrome-by-endotoxemia-in-ovariectomized-rats
#6
Hsin-Hsueh Shen, Shieh-Yang Huang, Pao-Yun Cheng, Yen-Ju Chu, Shu-Ying Chen, Kwok-Keung Lam, Yen-Mei Lee
OBJECTIVE: Accumulating evidence demonstrates that raloxifene, a selective estrogen receptor modulator, possesses anti-inflammatory action. This study evaluates the preventive effects of long-term treatment of raloxifene on acute inflammation and multiple organ dysfunction syndrome (MODS) in ovariectomized (OVX) rats with endotoxemia and its underlying mechanism of action. METHODS: Adult female rats were OVX bilaterally to induce estrogen insufficiency. OVX rats were administered with raloxifene (1 mg/kg, gavage, once daily) for 8 weeks, beginning 1 week after surgery, followed by induction of sepsis via intravenous infusion of lipopolysaccharides (LPS; 30 mg/kg) for 4 hours...
March 27, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28350753/what-to-eat-and-drink-in-the-festive-season-a-pan-european-observational-cross-sectional-study
#7
Helen L Parker, Jelena Curcic, Henriette Heinrich, Matthias Sauter, Michael Hollenstein, Werner Schwizer, Edoardo Savarino, Mark Fox
BACKGROUND: Digestive discomfort after meals is common in the community, especially during the festive season. It is uncertain whether this is related to intake of either high-calorie or high-fat foods or, alternatively, intake of specific foods. This prospective, cross-sectional study tested the hypothesis that the risk of reflux or dyspepsia is associated with the fat content of the meal independent of caloric load in a 'real-life' setting. MATERIALS AND METHODS: Four festive meals were served to delegates attending a conference on four consecutive days...
May 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28350737/updated-guidelines-on-digital-media-use-by-children
#8
Joseph Isaac Licata, Amy Elizabeth Baker
Given the speed at which mobile media has grown recently, the updated American Academy of Pediatrics guidelines for digital technology use by children are a welcome addition to the toolbox of pediatric healthcare providers. This article discusses the changes to the guidelines as well as other useful current research not specifically included in those guidelines.
April 2017: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/28350659/first-female-to-male-facial-confirmation-surgery-with-description-of-a-new-procedure-for-masculinization-of-the-thyroid-cartilage-adam-s-apple
#9
Jordan C Deschamps-Braly, Caitlin L Sacher, Jennifer Fick, Douglas K Ousterhout
Although male-to-female transgender patients commonly seek facial feminization surgery, facial masculinization surgery in the female-to-male transgender population is unreported in the literature. This report documents the first known female-to-male facial masculinization surgery, including a new technique for creating an "Adam's apple" to enhance the facial masculine appearance of a natal female. The authors "reversed" the methods typically used to feminize male facial features, and modified the forehead, nose, and chin to masculinize the patient's natal female facial features...
April 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28350474/detachment-of-membrane-bound-virions-by-competitive-ligand-binding-induced-receptor-depletion
#10
Nagma Parveen, Stephan Block, Vladimir P Zhdanov, Gustaf E Rydell, Fredrik Höök
Multivalent receptor-mediated interactions between virions and a lipid membrane can be weakened using competitive non-pathogenic ligand binding. In particular, the subsequent binding of such ligands can induce detachment of bound virions, a phenomena of crucial relevance for the development of new antiviral drugs. Focusing on the simian virus 40 (SV40) and recombinant cholera toxin B subunit (rCTB), and using (monosialotetrahexosyl)ganglioside (GM1) as their common receptor in a supported lipid bilayer (SLB), we present the first detailed investigation of this phenomenon by employing the quartz crystal microbalance with dissipation (QCM-D) and total internal reflection fluorescence (TIRF) microscopy assisted 2D single particle tracking (SPT) techniques...
March 28, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28350444/bottom-up-elucidation-of-glycosidic-bond-stereochemistry
#11
Christopher John Gray, Baptiste Schindler, Lukasz G Migas, Martina Picmanova, Abdul-Rahman Allouche, Anthony P Green, Santanu Mandal, Mohammed Saddik Motawia, Raquel Sánchez-Pérez, Nanna Bjarnholt, Birger Lindberg Møller, Anouk M Rijs, Perdita E Barran, Isabelle Compagnon, Claire E Eyers, Sabine L Flitsch
The lack of robust, high-throughput and sensitive analytical strategies that can conclusively map the structure of glycans has significantly hampered progress in fundamental and applied aspects of glycoscience. Resolution of the anomeric α/β glycan linkage within oligosaccharides remains a particular challenge. Here, we show that 'memory' of anomeric configuration is retained following gas-phase glycosidic bond fragmentation during tandem mass spectrometry (MS2). These findings allow for integration of MS2 with ion mobility spectrometry (IM-MS2) and lead The to a strategy to distinguish α- and β-linkages within natural underivatised carbohydrates...
March 28, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28347129/bi-layer-channel-azo-zno-thin-film-transistors-fabricated-by-atomic-layer-deposition-technique
#12
Huijin Li, Dedong Han, Liqiao Liu, Junchen Dong, Guodong Cui, Shengdong Zhang, Xing Zhang, Yi Wang
This letter demonstrates bi-layer channel Al-doped ZnO/ZnO thin film transistors (AZO/ZnO TFTs) via atomic layer deposition process at a relatively low temperature. The effects of annealing in oxygen atmosphere at different temperatures have also been investigated. The ALD bi-layer channel AZO/ZnO TFTs annealed in dry O2 at 300 °C exhibit a low leakage current of 2.5 × 10(-13)A, I on/I off ratio of 1.4 × 10(7), subthreshold swing (SS) of 0.23 V/decade, and high transmittance. The enhanced performance obtained from the bi-layer channel AZO/ZnO TFT devices is explained by the inserted AZO front channel layer playing the role of the mobility booster...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28346909/bioaugmentaton-in-technosols-created-in-abandoned-pyritic-tailings-can-contribute-to-enhance-soil-c-sequestration-and-plant-colonization
#13
Raúl Zornoza, Melisa Gómez-Garrido, Silvia Martínez-Martínez, María Dolores Gómez-López, Ángel Faz
Creation of Technosols in combination with phytostabilization may be a sustainable strategy to minimize the environmental and human health hazards derived from mine tailings. Bioaugmentation can facilitate plant establishment and growth for efficient phytostabilization. In order to assess if bioaugmentation can increase soil quality and fertility, decrease metal(loid) mobility and accelerate plant colonization, a one-year field experiment was designed with creation of Technosols in two tailings ponds with different pH (acidic (AT) and neutral (NT)), with addition of marble waste (MaW) and two organic materials (pig manure (PM) and sewage sludge (SS), without or with inoculation of effective microorganisms (EM) at three rates...
March 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28346885/plasma-and-brain-pharmacokinetics-of-ganoderic-acid-a-in-rats-determined-by-a-developed-uflc-ms-ms-method
#14
Fang-Rui Cao, Bing-Xin Xiao, Li-Sha Wang, Xue Tao, Ming-Zhu Yan, Rui-Le Pan, Yong-Hong Liao, Xin-Min Liu, Qi Chang
Ganoderic acid A (GAA), an active triterpenoid of the traditional Chinese herbal medicine Lingzhi, has been reported to exhibit antinociceptive, antioxidative, and anti-cancer activities. The present study aims to establish a sensitive and rapid UPLC-MS/MS method for studying the plasma and brain pharmacokinetics of GAA in rats. The analytes were separated on a C18 column eluted with a gradient mobile phase consisting of acetonitrile and 0.1% aqueous formic acid at 0.3mL/min. The eluate was monitored by a mass detector using an MRM (m/z, 515...
March 11, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28346809/malat1-promotes-osteosarcoma-development-by-regulation-of-hmgb1-via-mir-142-3p-and-mir-129-5p
#15
Ke Liu, Jun Huang, Jiangdong Ni, Deye Song, Muliang Ding, Junjie Wang, Xianzhe Huang, Wenzhao Li
Recently, emerging evidence has demonstrated that metastasis-associated lung adenocarcinoma transcript 1 (MALAT1), a long non-coding RNAs (lncRNAs), contributes to the initiation and development of tumors, including osteosarcoma (OS). Multiple studies have suggested an oncogenic role of MALAT1 and high-mobility group protein B1 (HMGB1) in OS tumorigenesis and metastasis, but the effects and mechanisms are not unanimous. Here, we showed that MALAT1 and HMGB1 were significantly increased in human OS cell lines and knockdown of MALAT1 reduced HMGB1 expression...
March 19, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28346746/simultaneous-determination-of-4-hydroxyphenyl-lactic-acid-4-hydroxyphenyl-acetic-acid-and-3-4-hydroxyphenyl-propionic-acid-in-human-urine-by-ultra-high-performance-liquid-chromatography-with-fluorescence-detection
#16
Yongli Yang, Fan Liu, Yiqun Wan
A simple and reliable method was established for simultaneous determination of 4-hydroxyphenyl acetic acid, 4-hydroxyphenyl lactic acid, and 3-4-hydroxyphenyl propionic acid in human urine by high-performance liquid chromatography with fluorescence detection. Solid-phase extraction was used to eliminate the interferences in urine. The separation of three analytes was achieved using a C18 column and a mobile phase formed by a 95:5 v/v mixture of 50 mmol/L ammonium acetate buffer at pH 6.8 that contained 5 mmol/L tetrabutyl ammonium bromide and acetonitrile...
March 27, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28346706/tooth-loss-in-generalized-aggressive-periodontitis-prognostic-factors-after-17-years-of-supportive-periodontal-treatment
#17
Christian Graetz, Sonja Sälzer, Anna Plaumann, Peter Schlattmann, Maren Kahl, Claudia Springer, Christof Dörfer, Falk Schwendicke
AIM: This retrospective longitudinal study assessed the risk of and prognostic factors for tooth loss in patients with generalized aggressive periodontitis (GAgP) after periodontal treatment in a university setting. METHODS: 57 patients (1505 teeth) were examined before (T0) and after active periodontal therapy (APT, T1) as well as after 17.4±4.8 [range: 9-28] years of supportive periodontal therapy (SPT, T2). Descriptive statistics and a Cox-proportional-hazards shared-frailty model were applied...
March 27, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28346502/ebv-induces-persistent-nf-%C3%AE%C2%BAb-activation-and-contributes-to-survival-of-ebv-positive-neoplastic-t-or-nk-cells
#18
Honami Takada, Ken-Ichi Imadome, Haruna Shibayama, Mayumi Yoshimori, Ludan Wang, Yasunori Saitoh, Shin Uota, Shoji Yamaoka, Takatoshi Koyama, Norio Shimizu, Kouhei Yamamoto, Shigeyoshi Fujiwara, Osamu Miura, Ayako Arai
Epstein-Barr virus (EBV) has been detected in several T- and NK-cell neoplasms such as extranodal NK/T-cell lymphoma nasal type, aggressive NK-cell leukemia, EBV-positive peripheral T-cell lymphoma, systemic EBV-positive T-cell lymphoma of childhood, and chronic active EBV infection (CAEBV). However, how this virus contributes to lymphomagenesis in T or NK cells remains largely unknown. Here, we examined NF-κB activation in EBV-positive T or NK cell lines, SNT8, SNT15, SNT16, SNK6, and primary EBV-positive and clonally proliferating T/NK cells obtained from the peripheral blood of patients with CAEBV...
2017: PloS One
https://www.readbyqxmd.com/read/28346356/microinjection-of-antibodies-targeting-the-lamin-a-c-histone-binding-site-blocks-mitotic-entry-and-reveals-separate-chromatin-interactions-with-hp1-cenpb-and-pml
#19
Charles R Dixon, Melpomeni Platani, Alexandr A Makarov, Eric C Schirmer
Lamins form a scaffold lining the nucleus that binds chromatin and contributes to spatial genome organization; however, due to the many other functions of lamins, studies knocking out or altering the lamin polymer cannot clearly distinguish between direct and indirect effects. To overcome this obstacle, we specifically targeted the mapped histone-binding site of A/C lamins by microinjecting antibodies specific to this region predicting that this would make the genome more mobile. No increase in chromatin mobility was observed; however, interestingly, injected cells failed to go through mitosis, while control antibody-injected cells did...
March 25, 2017: Cells
https://www.readbyqxmd.com/read/28346354/anti-inflammatory-properties-of-irisin-mediator-of-physical-activity-are-connected-with-tlr4-myd88-signaling-pathway-activation
#20
Agnieszka Irena Mazur-Bialy, Ewa Pocheć, Marcin Zarawski
Irisin, an adipomiokine known as a mediator of physical activity, induces the browning of adipose tissue and it has potentially protective properties in the development of obesity-related states, such as insulin resistance, arteriosclerosis, and type 2 diabetes. Despite numerous studies conducted on this factor, still little is known about its impact on the functioning of immunocompetent cells, but its potential anti-inflammatory properties were previously suggested. In the current study we investigated the role of irisin (0-100 nM) in the downstream pathway activation of Toll-like receptor 4 (TLR4) in RAW 264...
March 25, 2017: International Journal of Molecular Sciences
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