keyword
MENU ▼
Read by QxMD icon Read
search

PDA

keyword
https://www.readbyqxmd.com/read/29339615/adsorption-performance-of-polydopamine-modified-attapulgite-granular-adsorbent-for-methylene-blue
#1
Weisheng Zheng, Hailing Wang, Zhaolian Zhu, Peng Wei
Polydopamine-modified granule organo-attapulgite adsorbent (PDA-GOAT) was facilely prepared via a dip-coating approach. The samples were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Surface area and pore size were calculated from the Brunauer-Emmett-Teller method by N2 adsorption-desorption isotherm. The adsorption behaviour of methylene blue (MB) onto PDA-GOAT was systematically investigated. The experimental data revealed that the adsorption process fitted well with the pseudo-second-order kinetics equation and the adsorption isotherm fitted better with the Langmuir model...
January 2018: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29338173/a-smartphone-based-voc-sensor-using-colorimetric-polydiacetylenes
#2
Dong-Hoon Park, Jung-Moo Heo, Woomin Jeong, Young Hyuk Yoo, Bum Jun Park, Jong-Man Kim
Owing to a unique colorimetric (typically blue-to-red) feature upon environmental stimulation, polydiacetylene (PDAs) have been actively employed in chemosensor systems. We developed a highly accurate and simple volatile organic compound (VOC) sensor system that can be operated using a conventional smartphone. The procedure begins with forming an array of four different PDAs on conventional paper using inkjet printing of four corresponding diacetylenes (DAs) followed by photopolymerization. A database of color changes (i...
January 17, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29336933/left-vocal-cord-paralysis-after-patent-ductus-arteriosus-ligation-a-systematic-review
#3
REVIEW
Merete Salveson Engeseth, Nina Rydland Olsen, Silje Maeland, Thomas Halvorsen, Adam Goode, Ola Drange Røksund
CONTEXT: Extremely premature (EP) infants are at increased risk of left vocal cord paralysis (LVCP) following surgery for patent ductus arteriosus (PDA). OBJECTIVE: A Systematical Review was conducted to investigate the incidence and outcomes of LVCP after PDA ligation in EP born infants. DATA SOURCES: Searches were performed in Cochrane, Medline, Embase, Cinahl and PsycInfo. STUDY SELECTION: Studies describing EP infants undergoing PDA surgery and reporting incidence of LVCP were included...
November 15, 2017: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/29334594/thoracic-aortic-aneurysm-in-patients-with-loss-of-function-filamin-a-mutations-clinical-characterization-genetics-and-recommendations
#4
Ming Hui Chen, Sangita Choudhury, Mami Hirata, Siri Khalsa, Bernard Chang, Christopher A Walsh
The frequency and gender distribution of thoracic aortic aneurysm as a cardiovascular manifestation of loss-of-function (LOF) X-linked FilaminA (FLNA) mutations are not known. Furthermore, there is very limited cardiovascular morbidity or mortality data in children and adults. We analyzed cardiac data on the largest series of 114 patients with LOF FLNA mutations, both children and adults, with periventricular nodular heterotopia (PVNH), including 48 study patients and 66 literature patients, median age of 22...
February 2018: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29333220/outcomes-of-left-ventricular-function-according-to-treatment-response-for-a-patent-ductus-arteriosus-in-preterm-infants
#5
Soo Jung Kang, Young Sun Cho, Seo Jung Hwang, Hyo Jin Kim
Background: To evaluate the outcomes of left ventricular (LV) function according to treatment response for a hemodynamically significant patent ductus arteriosus (hsPDA) in preterm infants. Methods: Echocardiograms of 21 preterm infants born at gestational age < 31 weeks obtained at term-equivalent age were retrospectively studied. Among preterm infants with a hsPDA, 9 underwent ligation after failure of pharmacological closure (ligation group) and 6 experienced successful pharmacological closure (medication group)...
December 2017: Journal of Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/29332794/a-sensitive-spr-biosensor-based-on-hollow-gold-nanospheres-and-improved-sandwich-assay-with-pda-ag-fe3o4-rgo
#6
Shuo Li, Qiong Wu, Pinyi Ma, Yue Zhang, Daqian Song, Xinghua Wang, Ying Sun
A novel surface plasmon resonance (SPR) biosensor based on hollow gold nanospheres (HGNPs) and an improved sandwich assay was developed to detect rabbit IgG. The electromagnetic coupling between the HGNPs and Au film, and the notable plasmonic fields spread over the inner and outer surfaces of HGNPs, led to the considerable amplification of the SPR signal. Polydopamine-Ag@Fe3O4/reduced graphene oxide (PDA-Ag@Fe3O4/rGO) was introduced to bind detection antibody (Ab2) to form the improved sandwich structure. Ag nanoparticles were excited to produce SPR and their hot electrons were doped on graphene thin films, which amplified the response of biomolecules...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29331423/thymidylate-synthase-prompts-metastatic-progression-through-the-dtmp-associated-emt-process-in-pancreatic-ductal-adenocarcinoma
#7
Muxing Kang, Wen Zheng, Qing Chen, Wenjie Qin, Pengping Li, Shifei Huang, Yizhao Zhou, Lantian Wang, Haolei Cai, Wenjie Lu, Biao Jiang, Qingqu Guo, Jian Chen, Dylan Wan, Jianyu Rao, Yulian Wu
As a fundamental metabolic enzyme, anti-Thymidylate synthase (TS) strategy has been shown to be an effective therapy for human cancers. However, the genuine effects of TS in pancreatic ductal adenocarcinoma (PDA) are still conflicting. We systemically assessed the prognostic value and whether TS associated with malignant progression in PDA. Protein and mRNA expression level of TS were evaluated in en bloc PDA samples, the prognostic effect of TS expressed in cytoplasm or cytonuclear was determined separately in the first time...
January 10, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29329157/smad4-loss-correlates-with-higher-rates-of-local-and-distant-failure-in-pancreatic-adenocarcinoma-patients-receiving-adjuvant-chemoradiation
#8
Joseph M Herman, Salma K Jabbour, Steven H Lin, Matthew P Deek, Charles C Hsu, Elliot K Fishman, Sinae Kim, John L Cameron, Marina Chekmareva, Daniel A Laheru, Amol K Narang, Timothy M Pawlik, Ralph H Hruban, Christopher L Wolfgang, Christine A Iacobuzio-Donahue
OBJECTIVES: The tumor suppressor gene SMAD4 (DPC4) is genetically inactivated in approximately half of pancreatic ductal adenocarcinomas (PDAs). We examined whether Smad4 tumor status was associated with outcomes after adjuvant chemoradiation (CRT) for resected PDAs. METHODS: Patients treated with adjuvant CRT were identified (N = 145). Smad4 status was determined by immunolabeling and graded as intact or lost. Kaplan-Meier method and multivariable competing risk analyses were performed...
January 12, 2018: Pancreas
https://www.readbyqxmd.com/read/29327757/rapid-and-sensitive-detection-of-neuron-specific-enolase-with-a-polydopamine-coated-plasmonic-chip-utilizing-a-rear-side-coupling-method
#9
M Toma, S Izumi, K Tawa
A rapid and sensitive detection of a cancer marker, neuron specific enolase (NSE), is demonstrated by using a disposable silver plasmonic chip functionalized with a mussel-inspired polydopamine (PDA) coating. A plasmonic chip consisting of a diffraction grating coated with a silver thin film is used for the excitation of propagating surface plasmon resonance through a rear-side grating coupling method. Simple and quick bio-functionalization of the sensor surface is performed by PDA coating which requires 20 min for deposition, and allows direct attachment of the capture antibody without using any coupling agents...
January 12, 2018: Analyst
https://www.readbyqxmd.com/read/29327578/rapid-light-driven-color-transition-of-novel-photo-responsive-polydiacetylene-molecules
#10
Jiseok Lee, Sungbaek Seo, Jinsang Kim
We developed new photo-responsive polydiacetylene (PR-PDA) molecules by incorporating a photo-cleavable moiety, 6-nitropiperonyl alcohol (NP) or 4, 5-dimethoxy-2-nitrobenzyl alcohol (DMN), into a self-assembling diacetylene molecule. Inducing steric disordering of the assembled PDA molecules by the cleavage of the photo-responsive moiety under 365 nm UV irradiation results in color transition from blue to red and development of red fluorescence, allowing convenient photo patterning. Further writing and erasing of fluorescence patterns are demonstrated toward novel secure information communication and anti-counterfeiting applications...
January 12, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29327029/bio-inspired-robust-non-iridescent-structural-color-with-self-adhesive-amorphous-colloidal-particle-arrays
#11
Panmiao Liu, Jialun Chen, Zexi Zhang, Zhuoying Xie, Xin Du, Zhongze Gu
Here we propose a new method for constructing highly color fast non-iridescent structural color materials by assembling self-adhesive poly-dopamine coated SiO2 nanoparticles (PDA@SiO2) for amorphous colloidal arrays through a "spraying" process. Simply by alkaline vapor treatment, the adhesive forces and fastness of the amorphous colloidal arrays were significantly improved. This was demonstrated by lap shear tests of tape tearing and cohesive failure as well as a series of fastness tests like sandpaper abrasion, finger wiping and ultrasonic cleaning...
January 12, 2018: Nanoscale
https://www.readbyqxmd.com/read/29325707/successful-creation-of-pancreatic-cancer-organoids-by-means-of-eus-guided-fine-needle-biopsy-for-personalized-cancer-treatment
#12
Herve Tiriac, Juan Carlos Bucobo, Demetrios Tzimas, Suman Grewel, Joseph F Lacomb, Leahana M Rowehl, Satish Nagula, Maoxin Wu, Joseph Kim, Aaron Sasson, Shivakumar Vignesh, Laura Martello, Maria Munoz-Sagastibelza, Jonathan Somma, David A Tuveson, Ellen Li, Jonathan M Buscaglia
BACKGROUND AND AIMS: Pancreatic cancer organoids are tumor models of individualized human pancreatic ductal adenocarcinoma (PDA), created from surgical specimens and used for personalized treatment strategies. Unfortunately the vast majority of patients with PDA are not operative candidates. Creation of human PDA organoids at the time of initial tumor diagnosis is therefore critical. Our aim was to assess the feasibility of creating human PDA organoids by EUS fine-needle biopsy (EUS-FNB) in patients with PDA...
January 8, 2018: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29325210/a-new-co-p-nanocomposite-with-ultrahigh-relaxivity-for-in-vivo-magnetic-resonance-imaging-guided-tumor-eradication-by-chemo-photothermal-synergistic-therapy
#13
Jianhua Liu, Longhai Jin, Yinghui Wang, Xing Ding, Songtao Zhang, Shuyan Song, Daguang Wang, Hongjie Zhang
Design of new nanoagents that intrinsically have both diagnostic imaging and therapeutic capabilities is highly desirable for personalized medicine. In this work, a novel nanotheranostic agent is fabricated based on polydopamine (PDA)-functionalized Co-P nanocomposites (Co-P@PDA) for magnetic resonance imaging (MRI)-guided combined photothermal therapy and chemotherapy. The ultrahigh relaxivity of 224.61 mm-1 s-1 can enable Co-P@PDA to be applied as an excellent contrast agent for MRI in vitro and in vivo, providing essential and comprehensive information for tumor clinical diagnosis...
January 11, 2018: Small
https://www.readbyqxmd.com/read/29322141/polydiacetylenic-nanofibers-as-new-sirna-vehicles-for-in-vitro-and-in-vivo-delivery
#14
P Neuberg, I Hamaidi, S Danilin, M Ripoll, V Lindner, M Nothisen, A Wagner, A Kichler, T Massfelder, J-S Remy
Polydiacetylenic nanofibers (PDA-Nfs) obtained by photopolymerization of surfactant 1 were optimized for intracellular delivery of small interfering RNAs (siRNAs). PDA-Nfs/siRNA complexes efficiently silenced the oncogene Lim-1 in the renal cancer cells 786-O in vitro. Intraperitoneal injection of PDA-Nfs/siLim1 downregulated Lim-1 in subcutaneous tumor xenografts obtained with 786-O cells in nude mice. Thus, PDA-Nfs represent an innovative system for in vivo delivery of siRNAs.
January 11, 2018: Nanoscale
https://www.readbyqxmd.com/read/29318822/-design-and-implementation-of-data-reporting-system-for-chinese-materia-medica-resources-survey
#15
Hui Wang, Xiao-Bo Zhang, Xiao-Guang Ge, Zhi-Xian Jing, Ling Wang, Yu-Ping Zhao, Lan-Ping Guo, Lu-Qi Huang
The collection, summary and sharing of all kinds of survey data are one of the main tasks and achievements in the national census of Chinese materia medica resources organized and implemented by the State Administration of Traditional Chinese Medicine. It is a key link in the implementation of the national census of Chinese materia medica resources. Based on the client / server architecture, the data reporting system for Chinese materia medica resources survey has been established for reporting system application model of geospatial data service based on Web implementation, through the SOA framework, to achieve the data collection summary of the seven aspects of the local data configuration, data reporting, data verification, data reporting, PDA data import and export, APP data import, track instrument data import...
November 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29318792/hemodynamic-effects-on-systemic-blood-flow-and-ductal-shunting-flow-after-loading-dose-of-intravenous-caffeine-in-preterm-infants-according-to-the-patency-of-ductus-arteriosus
#16
Jihye Hwang, Yu Seon Kim, Jeong Hee Shin, Byung Min Choi
BACKGROUND: In preterm infants, caffeine citrate is used to stimulate breathing before they are weaned from mechanical ventilation and to reduce the frequency of apnea. In recent studies, effects of caffeine on the cardiovascular system have been emphasized in preterm infants with patent ductus arteriosus (PDA). METHODS: This study aimed to assess the short-term hemodynamic effects on systemic blood flow and ductal shunting flow after loading standard doses of intravenous caffeine in preterm infants...
January 22, 2018: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29317372/pancreas-ductal-adenocarcinoma-with-cystic-features-on-cross-sectional-imaging-radiologic-pathologic-correlation
#17
Seo Yeon Youn, Sung Eun Rha, Eun Sun Jung, In Seok Lee
Most pancreatic ductal adenocarcinomas (PDAs) show solid growth pattern, but ductal adenocarcinomas may demonstrate intratumoral cystic appearance or accompany peritumoral non-neoplastic cystic lesions, thus mimicking cystic pancreatic tumors on imaging studies. The histopathologic findings for PDA with cystic feature are divided into neoplastic and non-neoplastic cysts. Neoplastic cystic changes include large-duct type cysts (microcystic appearance), neoplastic mucin cysts (macrocystic appearance), colloid carcinomas (mucinous noncystic adenocarcinomas), and degenerative cystic change usually caused by hemorrhagic necrosis of tumor...
January 2018: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29314566/reversible-phase-transition-of-robust-luminescent-hybrid-hydrogels
#18
Zhiqiang Li, Guannan Wang, Yige Wang, Huanrong Li
We report here on remote-control over reversible phase transition of robust luminescent hybrid hydrogels by rational selection and incorporation of photoswitches into hydrogel systems. Azobenzene units functionalized with guanidinium was utilized as the photoswitches and incorporated via a host-guest inclusion method involving α-cyclodextrins functionalized with 2, 6-pyridinedicarboxylic acid (PDA) groups. While the guanidinium functional groups bind to the negative charged Laponite matrixs surface to connect organic and inorganic components, the PDA groups enable simultaneous coordination with different lanthanide metal ions, rendering the hydrogel broadly luminescent...
January 3, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29313560/surgical-closure-of-patent-ductus-arteriosus-in-extremely-low-birth-weight-infants-less-than-750-grams
#19
Tomasz Stankowski, Sleiman Sebastian Aboulhassan, Dirk Fritzsche, Marcin Misterski, Jakub Marczak, Anna Szymańska, Lukasz Szarpak, Cyprian Augustyn, Romuald Cichoń, Bartłomiej Perek
BACKGROUND: Patent ductus arteriosus (PDA) occurs more frequently in premature infants. Depending on the degree of prematurity, these children often have other serious comorbidities that could significantly impact on surgical outcome. AIM: This study aimed to evaluate clinical results of the surgical ligation of PDA in extremely low body weight preterm infants with birth weight below 750 grams and to identify risk factors of mortality. METHODS: A total of 31 preterm infants with birth weight below 750 grams and significant PDA were operated between 2006 and 2016 through posterolateral thoracotomy (n=16) or with the use of video-assisted thoracoscopic (VATS) method (n = 15)...
January 9, 2018: Kardiologia Polska
https://www.readbyqxmd.com/read/29310562/programmatic-changes-to-reduce-mortality-and-morbidity-in-humanitarian-congenital-cardiac-surgery
#20
Tyler J Wallen, George J Arnaoutakis, Randa Blenden, Rodrigo Soto
BACKGROUND: This report documents the outcomes of cardiac surgical mission trips organized by the International Children's Heart Foundation (ICHF), a nongovernmental organization that provides congenital heart surgery services to the developing world, and discusses factors associated with a reduction of mortality and morbidity in this setting. METHODS: A retrospective review of a prospectively maintained database was conducted to identify any patient who underwent surgical intervention during the course of an ICHF mission trip...
January 2018: World Journal for Pediatric & Congenital Heart Surgery
keyword
keyword
1282
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"