keyword
MENU ▼
Read by QxMD icon Read
search

argon plasma

keyword
https://www.readbyqxmd.com/read/28634331/genotoxicity-and-cytotoxicity-of-the-plasma-jet-treated-medium-on-lymphoblastoid-wil2-ns-cell-line-using-the-cytokinesis-block-micronucleus-cytome-assay
#1
Sung-Ha Hong, Endre J Szili, Michael Fenech, Nishtha Gaur, Robert D Short
Despite growing interest in the application of atmospheric plasma jets as medical treatment strategies, there has been comparatively little research on the potential genotoxic and cytotoxic effects of plasma jet treatment. In this study, we have employed the cytokinesis block micronucleus cytome (CBMN-Cyt) assay with WIL2-NS B lymphoblastoid cells to test the potential genotoxicity, as well as the cytotoxicity, of toxic species generated in cell culture media by an argon (Ar) plasma jet. Elevated levels of cell death (necrosis) and occurrence of chromosomal damage (micronuclei MN, nculeoplasmic bridge NPBs and nuclear bus, Nbuds) were observed when cells were exposed to plasma jet-treated media...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28629060/enhancing-the-biocompatibility-of-the-polyurethane-methacrylate-and-off-stoichiometry-thiol-ene-polymers-by-argon-and-nitrogen-plasma-treatment
#2
Tiam Foo Chen, Kim Shyong Siow, Pei Yuen Ng, Burhanuddin Yeop Majlis
Our studies focused on improving the biocompatibility properties of two microfluidic prototyping substrates i.e. polyurethane methacrylate (PUMA) and off-stoichiometry thiol-ene (OSTE-80) polymer by Ar and N2 plasma treatment. The contact angle (CA) measurement showed that both plasma treatments inserted oxygen and nitrogen moieties increased the surface energy and hydrophilicity of PUMA and OSTE-80 polymer which corresponded to an increase of nitrogen to carbon ratios (N/C), as measured by XPS, to provide a conducive environment for cell attachments and proliferation...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28615135/combined-therapy-for-epistaxis-by-hereditary-hemorrhagic-teleangiectasia-a-3-year-follow-up-study-on-45-patients
#3
Giorgos Papaspyrou, Dietmar Hecker, Maximilian Linxweiler, Bernhard Schick, Basel Al Kadah
Hereditary hemorrhagic telangiectasia (HHT) is a mutilating disease associated with the majority of patients with recurrent epistaxis episodes. The aim of this study was to present a single institution experience with patients treated for nasal epistaxis using a combination of Nd:YAG laser and argon plasma coagulation (APC) vs Nd:YAG laser alone, with a minimum follow-up of 3 years. 45 patients (21 men, 24 women) aged from 15 to 84 years with the diagnosis of HHT were treated in the Department of Otolaryngology, Head and Neck Surgery in Homburg/Saar between 10/2002 and 10/2012 because of epistaxis, using a combination of Nd:YAG laser and APC or Nd:YAG laser alone...
May 24, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28614248/endoscopic-variceal-ligation-induced-ulcer-bleeding-what-are-the-risk-factors-and-treatment-strategies
#4
Eunae Cho, Chung Hwan Jun, Sung Bum Cho, Chang Hwan Park, Hyun Soo Kim, Sung Kyu Choi, Jong Sun Rew
This study was aimed to determine the risk factors of endoscopic variceal ligation-(EVL) induced ulcer bleeding.The prevalence of EVL-induced ulcer bleeding is reported to be 3.6%. However, there are only limited reports of this serious complication, and the risk factors and the treatment methods are not well established.A total of 430 patients who had undergone EVL in Chonnam National University Hospital from January 2014 to October 2016 were studied. EVL was performed for prophylaxis or acute hemorrhage. The patients were classified into 2 groups: a bleeding group (n = 33) and a non-bleeding group (n = 397)...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28614224/a-case-report-of-local-treatment-of-inoperable-squamous-cell-lung-carcinoma-with-convex-probe-endobronchial-ultrasound-guided-intratumoral-injection-of-cisplatin-in-a-patient-with-severe-copd
#5
Xiaochen Li, Xiansheng Liu, Xiaoling Rao, Jianping Zhao, Yongjian Xu, Min Xie
RATIONALE: Endobronchial ultrasound as a powerful diagnostic technology can also be used to perform intratumoral chemotherapy for extraluminal tumor. PATIENT CONCERNS: A 69-year-old man with chronic obstructive pulmonary disease (COPD) presented with worsening dyspnea. A pulmonary function test showed severe airway obstruction and that forced expiratory volume in 1 s was 43% of the predicted value after a bronchodilator. DIAGNOSES: A bronchoscopy and histopathological analyses revealed a squamous cell carcinoma mostly located outside of the lumen with central airway obstruction...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28611555/a-case-of-gastric-antral-vascular-ectasia-which-was-aggravated-by-acid-reducer
#6
Yukiomi Nakade, Tomonori Ozeki, Hiroyuki Kanamori, Tadahisa Inoue, Takaya Yamamoto, Yuji Kobayashi, Norimitsu Ishii, Tomohiko Ohashi, Kiyoaki Ito, Masashi Yoneda
Gastric antral vascular ectasia (GAVE) is known to be characterized by red patches or spots in a diffuse or linear array in the antrum of the stomach. The precise etiology of GAVE remains to be elucidated. Argon plasma laser coagulation (APC) has been used to control oozing from GAVE; however, there is no satisfactory long-term effect of APC in the control of oozing from GAVE. An acid reducer is used after APC because even physiological acid exposure might delay post-APC ulcer healing. We describe the case of a patient who had used an acid reducer and experienced repeated gastrointestinal hemorrhage due to GAVE...
January 2017: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/28610705/anastomotic-ulcers-in-short-bowel-syndrome-new-suggestions-from-a-multidisciplinary-approach
#7
Fabio Fusaro, Renato Tambucci, Erminia Romeo, Pietro Bagolan, Luigi Dall'Oglio, Stefano Ceccarelli, Paola Francalanci, Dominique Hermans, Andrea Pietrobattista, Antonella Diamanti, Filippo Torroni, Paola De Angelis
BACKGROUND AND AIMS: Anastomotic ulceration (AU) is a rare potential life-threatening complication that may occur after intestinal resection. The diagnosis is often delayed after a long-lasting history of refractory anemia. The pathogenesis remains unknown and there are no established therapies. The aim of the study was to analyze the medical history of children with short bowel syndrome (SBS) who were experiencing AU. METHODS: Records of SBS children were retrospectively reviewed...
June 3, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28609500/morphometric-changes-induced-by-cold-argon-plasma-treatment-on-osteoblasts-grown-on-different-dental-implant-surfaces
#8
Luigi Canullo, Tullio Genova, Pietro Mandracci, Federico Mussano, Roberto Abundo, Joseph P Fiorellini
Treatments for enhancing surface energy were studied in an effort to create a more favorable environment for cell adhesion. Cold argon plasma (CAP) is able to improve titanium-cell contact, producing hydrophilic surfaces with higher wettability. The aim of this in vitro study was to estimate the early cell morphology after CAP treatment of different commercially available titanium surfaces. Surface wettability was significantly augmented in all the treated samples. The authors investigated how CAP affected the behavior of osteoblasts by evaluating the cell morphology outcome...
July 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28594330/risk-factors-of-the-rebleeding-according-to-the-patterns-of-nonvariceal-upper-gastrointestinal-bleeding
#9
Ji Hyung Nam, Tae Joo Jeon, Jae Hee Cho, Jae Hak Kim
BACKGROUND/AIMS: Despite of successful endoscopic hemostasis of nonvariceal upper gastrointestinal bleeding (NGIB), rebleeding rate has not decreased. The aim of this study was to identify risk factors for rebleeding after endoscopic hemostasis in patients with NGIB according to bleeding patterns. MATERIALS AND METHODS: A retrospective analysis was performed on the consecutive patients with NGIB in whom successful primary endoscopic hemostasis had been achieved at three university hospitals in Korea...
June 7, 2017: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/28591612/role-of-ambient-gas-composition-on-cold-physical-plasma-elicited-cell-signaling-in-keratinocytes
#10
Anke Schmidt, Sander Bekeschus, Helena Jablonowski, Annemarie Barton, Klaus-Dieter Weltmann, Kristian Wende
A particularly promising medical application of cold physical plasma is the support of wound healing. This is presumably achieved by modulating inflammation as well as skin cell signaling and migration. Plasma-derived reactive oxygen and nitrogen species (ROS/RNS) are assumed the central biologically active plasma components. We hypothesized that modulating the environmental plasma conditions from pure nitrogen (N2) to pure oxygen (O2) in an atmospheric pressure argon plasma jet (kINPen) will change type and concentration of ROS/RNS and effectively tune the behavior of human skin cells...
June 6, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28583493/endoscopic-esophageal-and-tracheal-cauterization-for-closure-of-recurrent-tracheoesophageal-fistula-a-case-report-and-review-of-the-literature
#11
REVIEW
Stacie Gregory, Robert H Chun, Daiva Parakininkas, Louella Amos, Roger Fons, Diana G Lerner, Dave R Lal, Cecille Sulman
OBJECTIVE: Recurrent tracheoesophageal fistula (TEF) can be a diagnostic and therapeutic challenge. Traditional treatment is thoracotomy, which carries significant morbidity and technical difficulty especially in a previously operated field. Recently, endoscopic techniques have been advocated as a primary approach for treatment of recurrent TEF prior to open repair. This case report describes the endoscopic technique used to address a recurrent TEF. The existing literature of all reported endoscopic cauterization methods is reviewed...
July 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28554655/hemorrhagic-angiodysplasia-of-the-digestive-tract-pathogenesis-diagnosis-and-management
#12
REVIEW
Aymeric Becq, Gabriel Rahmi, Guillaume Perrod, Christophe Cellier
Gastrointestinal angiodysplasia (GIA) is an acquired vascular superficial lesion, which presents typically as a bright red, irregular, round-shaped, slightly elevated lesion. GIAs are often seen in patients over 60 years of age and are mostly located in the colon (cecum and ascending).The cause and mechanisms of GIA have yet to be completely understood. Small-bowel GIAs are often diagnosed in the setting of obscure gastrointestinal bleeding (OGIB). In some cases, GIAs are associated with aortic stenosis, Von Willebrand's disease, chronic renal disease, and liver disease...
May 26, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28554638/effect-of-cold-plasma-on-crocin-esters-and-volatile-compounds-of-saffron
#13
Maryam Amini, Mahmood Ghoranneviss, Sara Abdijadid
The effect of cold plasma on crocin esters and volatile oils of saffron was studied for the first time. After the treatments, (Ar, Ar/5% O2 and Ar/10% O2 at 8 and 12kV of voltage), a decrease in crocin esters and saffranal and an increase in isophorone and 4-ketoisophorone was observed. After 4min, the saffron samples treated with Ar/20% O2 had blackened and the treatment was discontinued. The results show that increasing the input voltage and increasing the amount of added oxygen to Argon gas increased the changes in the safranal and crocin esters...
November 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28539033/the-usefulness-of-argon-plasma-coagulation-compared-with-endoscopic-submucosal-dissection-to-treat-gastric-adenoma
#14
Dong Hyun Lee, Won Ki Bae, Jong Wook Kim, Woo Hyun Paik, Nam Hoon Kim, Kyung Ah Kim, June Sung Lee
Background/Aims: To date, the best therapeutic modality for gastric adenoma, especially low-grade adenoma, has not been established. The aim of this study was to assess the usefulness of argon plasma coagulation (APC) in treating gastric adenoma compared with endoscopic submucosal dissection (ESD). Methods: We included 210 patients with gastric adenoma, who underwent treatment with either APC (97 patients) or ESD (113 patients). The clinical and pathologic characteristics, mean duration of hospital stay, complications, and recurrence rates between the two groups were compared...
May 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28535686/development-and-characterization-of-a-stable-adhesive-bond-between-a-poly-dimethylsiloxane-catheter-material-and-a-bacterial-biofilm-resistant-acrylate-polymer-coating
#15
Bonnie J Tyler, Andrew Hook, Andreas Pelster, Paul Williams, Morgan Alexander, Heinrich F Arlinghaus
Catheter associated urinary tract infections are the most common health related infections worldwide, contributing significantly to patient morbidity and mortality and increased health care costs. To reduce the incidence of these infections, new materials that resist bacterial biofilm formation are needed. A composite catheter material, consisting of bulk poly(dimethylsiloxane) (PDMS) coated with a novel bacterial biofilm resistant polyacrylate [ethylene glycol dicyclopentenyl ether acrylate (EGDPEA)-co-di(ethyleneglycol) methyl ether methacrylate (DEGMA)], has been proposed...
May 23, 2017: Biointerphases
https://www.readbyqxmd.com/read/28530605/screening-of-passiflora-l-mineral-content-using-principal-component-analysis-and-kohonen-self-organizing-maps
#16
Cleber Galvão Novaes, Ivana Lago da Silva Romão, Berlane Gomes Santos, Jéssica Palhares Ribeiro, Marcos Almeida Bezerra, Erik Galvão Paranhos da Silva
A method using digestion with diluted nitric acid and inductively coupled plasma optical emission spectrometry was applied to determine metal ions in the peel, pulp, and seed of Passiflora edulis f. flavicarpa and Passiflora cincinnata cultivated in the Bahia state, Brazil. Plasma parameters (radio frequency power and argon flow rates) were optimized. The quantification limits (µg g(-1)) were: Ca (43.0); Co (1.3); Cu (10.0); Fe (10.0); K (20.0); Mg (26.6); Mn (0.33); Na (56.6) and Zn (10.0). The accuracy of the method was evaluated by the analysis of certified reference materials (NIST 1567a Wheat Flour and NIST 1577b Bovine Liver)...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28527185/surface-heparinization-and-blood-compatibility-modification-of-small-intestinal-submucosa-sis-for-small-caliber-vascular-regeneration
#17
Bensong Han, Feng Xue, Cunyi Fan, Xiumei Mo
OBJECTIVES: This study aims to investigate the small intestinal submucosal (SIS) surface after heparinization with the hypothermia plasma technique, to improve the blood compatibility of SIS, and to explore the possibility of construction of small-caliber vascular grafts with modified SIS scaffolds in vivo. METHODS: SIS films prepared from jejunums of pigs were processed for surface treatment at different time periods with the argon plasma initiation technique under vacuum, and were then immediately immersed in 4% (m/v) heparin sodium solution for 24-h heparinization...
2017: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/28512304/nearly-perfect-durable-superhydrophobic-surfaces-fabricated-by-a-simple-one-step-plasma-treatment
#18
Jeongeun Ryu, Kiwoong Kim, JooYoung Park, Bae Geun Hwang, YoungChul Ko, HyunJoo Kim, JeongSu Han, EungRyeol Seo, YongJong Park, Sang Joon Lee
Fabrication of superhydrophobic surfaces is an area of great interest because it can be applicable to various engineering fields. A simple, safe and inexpensive fabrication process is required to fabricate applicable superhydrophobic surfaces. In this study, we developed a facile fabrication method of nearly perfect superhydrophobic surfaces through plasma treatment with argon and oxygen gases. A polytetrafluoroethylene (PTFE) sheet was selected as a substrate material. We optimized the fabrication parameters to produce superhydrophobic surfaces of superior performance using the Taguchi method...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28506588/double-balloon-enteroscopy-indications-approaches-diagnostic-and-therapeutic-efficacy-and-safety-early-experience-at-a-single-center
#19
J J E García-Correa, J J Ramírez-García, L F García-Contreras, C Fuentes-Orozco, L Irusteta-Jiménez, L R Michel-Espinoza, A S Carballo Uribe, J A Torres Chávez, A González-Ojeda
INTRODUCTION AND AIMS: Double-balloon enteroscopy has been improving the visualization of the entire intestine for more than a decade. It is a complementary method in the study of intestinal diseases that enables biopsies to be taken and treatments to be administered. Our aim was to describe its main indications, insertion routes, diagnostic/therapeutic efficacy, and complications. MATERIALS AND METHODS: All patients referred to our unit with suspected small bowel pathology were included...
May 12, 2017: Revista de Gastroenterología de México
https://www.readbyqxmd.com/read/28481219/effect-of-argon-flow-on-promoting-boron-doping-for-in-situ-grown-silicon-nitride-thin-films-containing-silicon-quantum-dots
#20
Jia Liu, Bin Liu, Xisheng Zhang, Xiaojia Guo, Shengzhong Frank Liu
Boron-doped silicon nitride thin films (SiNx) containing silicon quantum dots (Si QD) were prepared in situ by plasma enhanced chemical vapor deposition. With the aim of optimizing the performance of thin films, the mixed gas including argon and hydrogen was applied as dilution. The effects of Ar flow on the structural, electrical and optical properties of B-doped SiNx thin films were systemically studied through various characterizations. By tuning the Ar flow, the properties, such as QD size, crystallinity and optical band gap, can be effectively controlled...
May 8, 2017: Nanotechnology
keyword
keyword
51688
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"