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https://www.readbyqxmd.com/read/28070699/in-situ-soil-cos-exchange-of-a-temperate-mountain-grassland-under-simulated-drought
#1
Florian Kitz, Katharina Gerdel, Albin Hammerle, Tamara Laterza, Felix M Spielmann, Georg Wohlfahrt
During recent years, carbonyl sulfide (COS), a trace gas with a similar diffusion pathway into leaves as carbon dioxide (CO2), but with no known "respiration-like" leaf source, has been discussed as a promising new approach for partitioning net ecosystem-scale CO2 fluxes into photosynthesis and respiration. The utility of COS for flux partitioning at the ecosystem scale critically depends on the understanding of non-leaf sources and sinks of COS. This study assessed the contribution of the soil to ecosystem-scale COS fluxes under simulated drought conditions at temperate grassland in the Central Alps...
January 9, 2017: Oecologia
https://www.readbyqxmd.com/read/28056209/fractional-co2-laser-from-skin-rejuvenation-to-vulvo-vaginal-reshaping
#2
Maurizio Filippini, Ester Del Duca, Francesca Negosanti, Diletta Bonciani, Luca Negosanti, Mario Sannino, Giovanni Cannarozzo, Steven Paul Nisticò
BACKGROUND: The CO2 laser has become the gold standard treatment in dermatologic surgery for the treatment of a large number of skin and mucosal lesions. The introduction of the fractional micro-ablative technology represented an integration to the ablative resurfacing technique, reducing the healing time and the side effects. OBJECTIVE: Vaginal rejuvenation performed with this technique is a minimally invasive procedure that stimulates internal tissues of the female lower genital tract to regenerate the mucosa, improving tissue trophism and restoring the correct functionality...
December 30, 2016: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28046843/su-f-t-665-confocal-microscopy-imaging-of-cell-cycle-distribution-in-cells-treated-with-pegylated-gold-nanoshells
#3
D Sadetaporn, D Flint, C McFadden, A Asaithamby, G Sawakuchi
PURPOSE: To use confocal microscopy to distinguish cells in different phases of the cell cycle before and after treatment with pegylated gold nanoshells (PEG-AuNSs). METHODS: Transfected fibrosarcoma cells (HT1080-EYFP-53BP1-FUCCI) were cultured in T-25 flasks and seeded in glass bottom dishes. These cells express the fluorescent probe AmCyan during the G2/S phases of the cell cycle, mCherry during the G1 phase, and EYFP tagged to the DNA repair protein 53BP1. After allowing cells 4 h to adhere to dishes, PEG-AuNS (Nanospectra Biosciences, Houston, TX) at a concentration of 0...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045948/a-low-level-carbon-dioxide-laser-promotes-fibroblast-proliferation-and-migration-through-activation-of-akt-erk-and-jnk
#4
Yoshiaki Shingyochi, Shigeyuki Kanazawa, Satoshi Tajima, Rica Tanaka, Hiroshi Mizuno, Morikuni Tobita
BACKGROUND: Low-level laser therapy (LLLT) with various types of lasers promotes fibroblast proliferation and migration during the process of wound healing. Although LLLT with a carbon dioxide (CO2) laser was also reported to promote wound healing, the underlying mechanisms at the cellular level have not been previously described. Herein, we investigated the effect of LLLT with a CO2 laser on fibroblast proliferation and migration. MATERIALS AND METHODS: Cultured human dermal fibroblasts were prepared...
2017: PloS One
https://www.readbyqxmd.com/read/28040946/bench-testing-of-a-heterodyne-co2-laser-dispersion-interferometer-for-high-temporal-resolution-plasma-density-measurements
#5
T Akiyama, M A Van Zeeland, R L Boivin, T N Carlstrom, J A Chavez, C M Muscatello, R C O'Neill, J Vasquez, M Watkins, W Martin, A Colio, D K Finkenthal, D L Brower, J Chen, W X Ding, M Perry
A heterodyne detection scheme is combined with a 10.59 μm CO2 laser dispersion interferometer for the first time to allow large bandwidth measurements in the 10-100 MHz range. The approach employed utilizes a 40 MHz acousto-optic cell operating on the frequency doubled CO2 beam which is obtained using a high 2nd harmonic conversion efficiency orientation patterned gallium arsenide crystal. The measured standard deviation of the line integrated electron density equivalent phase resolution obtained with digital phase demodulation technique, is 4 × 10(17) m(-2)...
December 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28040707/stridor-secondary-to-a-subglottic-neuroendocrine-tumour
#6
Daniel W Scholfield, S Virk Jagdeep, Paul Stimpson
Large cell neuroendocrine carcinoma is a rare high-grade neuroendocrine neoplasm of the larynx, that exhibits particularly aggressive behaviour. We present a case of a 42-year-old patient with progressive dyspnoea and biphasic stridor, initially treated as asthma and resulting in delayed definitive management. Flow volume loops demonstrated narrowed inspiratory and expiratory flow volume loops. Subsequent CT neck and thorax indicated a mass arising from the subglottis and the patient proceeded to microlaryngoscopy and trans-oral CO2 laser debulking...
December 30, 2016: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28032173/clinical-outcomes-and-complications-associated-with-fractional-lasers-a-review-of-730-patients
#7
Steven R Cohen, Ashley Goodacre, Soobin Lim, Jennifer Johnston, Cory Henssler, Brian Jeffers, Ahmad Saad, Tracy Leong
BACKGROUND: Fractional lasers were introduced to provide increased safety, while maintaining high efficacy and patient satisfaction. Patients with virtually all Fitzpatrick skin types could be safely treated using a wide spectrum of wavelengths and a broad array of skin conditions, and aging could be addressed. Although safety studies have been reported for ablative CO2 and erbium lasers, surprisingly few data are available on adverse events and complications associated with fractional lasers...
December 28, 2016: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28012534/laser-co2-tonsillotomy-versus-argon-plasma-coagulation-apc-tonsillotomy-a-retrospective-study-with-10-year-follow-up
#8
Giorgos Papaspyrou, Maximilian Linxweiler, Dirk Knöbber, Bernhard Schick, Basel Al Kadah
INTRODUCTION: Tonsillotomy is increasingly gaining acceptance as the treatment for tonsillar hyperplasia resulting in obstructive symptoms. The aim of this study was to compare the long-term results of CO2 laser tonsillotomy with those of argon plasma coagulation (APC) tonsillotomy. METHODS: The data of 64 children, aged 2-10 years (mean 4.7 years), treated in the Department of Otolaryngology, Head and Neck Surgery, in Homburg, Germany with APC (36 patients) or CO2 laser (28 patients) for tonsillar hyperplasia between June 2004 and December 2004 were available for analysis...
January 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28012513/minimally-invasive-endoscopic-treatment-for-pediatric-combined-high-grade-stenosis-as-a-laryngeal-manifestation-of-epidermolysis-bullosa
#9
Dora Palinko, Vera Matievics, Ilona Szegesdi, Balazs Sztano, Laszlo Rovo
Epidermolysis bullosa refers to a clinically and genetically heterogeneous group of inherited mucocutaneous diseases. Laryngotracheal lesions are momentous regarding the risk of sudden airway obstruction. The traditional treatment is tracheostomy. This case report highlights the advantages of minimally invasive interventions. A successful combined endoscopic management of a life-threatening respiratory crisis is presented in a 4-year-old child. Combined commissure stenosis with supraglottic spread was treated by CO2 laser dissection and bilateral endoscopic arytenoid abduction lateropexy, supplemented with mitomycin C application...
January 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28009692/fractional-carbon-dioxide-laser-of-recent-surgical-scars-in-the-head-and-neck-region-a-split-scar-evaluator-blinded-study
#10
Sarah Buelens, Anne-Sophie Van Hove, Katia Ongenae, Hilde Lapeere, Wouter Huvenne, Hubert Vermeersch, Evelien Verhaeghe, Barbara Boone
BACKGROUND: Postoperative scarring is a common cause of patient dissatisfaction. Several strategies have been developed to improve its clinical aspects. OBJECTIVE: To assess efficacy and safety of the 10,600 nm ablative fractional carbon dioxide (CO2) laser in the treatment of recent surgical scars in the head and neck region. METHODS AND MATERIALS: A prospective, randomized, single-blind intrapatient controlled study was conducted on 9 postoperative scars in the head and neck region...
January 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28000225/topical-oral-cavity-chemoprophylaxis-using-isotretinoin-rinse-a-15-year-experience
#11
Sameep Kadakia, Arvind Badhey, Mary Milam, Thomas Lee, Yadranko Ducic
OBJECTIVES/HYPOTHESIS: To determine the utility of isotretinoin oral rinses as a method of chemoprevention for recurrent oral cavity squamous cell carcinoma (SCC), carcinoma in situ, and dysplasia. STUDY DESIGN: Retrospective cohort study. METHODS: One hundred forty-three patients were initially enrolled in the study; however, 18 were excluded due to inability to tolerate therapy. The included patients were classified into four groups. Group 1 included patients with multiple early stage oral cavity lesions following initial resection...
December 21, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27998025/effect-of-different-types-of-therapeutic-trauma-on-vitiligo-lesions
#12
Medhat El Mofty, Samia Esmat, Nahla Hunter, Heba M Mashaly, Dina Dorgham, Olfat Shaker, Sarah Ibrahim
New treatment modalities for vitiligo acting by changing certain cytokines and metalloproteinases are newly emerging. The aim of this work is to To assess the efficacy of trichloroacetic acid (TCA) chemical peel, dermapen, and fractional CO2 laser in treatment of stable non-segmental vitiligo and to detect their effects on IL-17 and MMP-9 levels. Thirty patients with stable vitiligo were recruited in a randomized controlled study. They were randomly categorized into three equal groups. Group 1: TCA peel, Group 2: dermapen machine, and Group 3: Fractional CO2 laser...
December 20, 2016: Dermatologic Therapy
https://www.readbyqxmd.com/read/27990655/transcutaneous-drug-delivery-by-liposomes-using-fractional-laser-technology
#13
Takahiro Fujimoto, Jian Wang, Kazuki Baba, Yuka Oki, Yuki Hiruta, Masayuki Ito, Shinobu Ito, Hideko Kanazawa
OBJECTIVE: Transdermal delivery of hydrophilic peptides remains a challenge due to their poor cellular uptake and transdermal penetration. We hypothesize that combination of a CO2 fractional laser to enhance percutaneous absorption and liposomes as transdermal carriers would improve skin penetration of hydrophilic drugs. STUDY DESIGN: NA. METHODS: Liposomes were prepared using membrane fusion lipid dioleoylphosphatidylethanolamine, and used to deliver 5-carboxyfluorescein (CF) and fluorescein isothiocyanate-conjugated ovalbumin (OVA-FITC) as model hydrophilic peptide drugs...
December 19, 2016: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/27987326/risk-factors-for-recurrence-after-successful-treatment-of-warts-the-role-of-smoking-habits
#14
P L Bencini, S Guida, S Cazzaniga, G Pellacani, M G Galimberti, M Bencini, L Naldi
BACKGROUND: Several therapies have been proposed for cutaneous warts without results concerning factors affecting recurrences. OBJECTIVE: To determine the importance of individual characteristics and different therapy modalities in the occurrence of relapses. METHODS: Observational prospective cohort study including 199 patients affected by multiple plantar warts treated as follows: 49 with keratolytics, 50 with CO2 laser, 50 with pulsed dye laser (PDL) and 50 with cryotherapy...
December 17, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/27987043/nevus-spilus-treatment-with-fractional-co2-laser-in-combination-with-medlite-c6-laser-a-preliminary-study
#15
Mingjun Tang, Yuyan Cheng, Chunjun Yang, Shengxiu Liu, Yujun Sheng, Yongjiang Li, Weiwei Yin, Wenming Zhou, Sen Yang, Xuejun Zhang
No abstract text is available yet for this article.
December 16, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27973834/experimental-and-theoretical-investigations-of-infrared-multiple-photon-dissociation-spectra-of-asparagine-complexes-with-zn-2-and-cd-2-and-their-deamidation-processes
#16
Georgia C Boles, Rebecca A Coates, Giel Berden, Jos Oomens, P B Armentrout
Complexes of asparagine (Asn) cationized with Zn(2+) and Cd(2+) were examined by infrared multiple photon dissociation (IRMPD) action spectroscopy using light generated from a free electron laser. Electrospray ionization yielded complexes of deprotonated Asn with Zn(2+), [Zn(Asn-H)](+), and intact Asn with CdCl(+), CdCl(+)(Asn). Series of low energy conformers for each complex were found using quantum chemical calculations in order to identify the structures formed experimentally. The experimentally obtained spectra were compared to those calculated from optimized structures at the B3LYP/6-311+G(d,p) level for [Zn(Asn-H)](+) and the B3LYP/def2-TZVP level with an SDD effective core potential on cadmium for the CdCl(+)(Asn) system...
December 15, 2016: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/27964825/carbon-dioxide-laser-treatment-of-penile-intraepithelial-neoplasia
#17
Abdullah Zreik, Matthew Rewhorn, Ross Vint, Rehan Khan, David Hendry
INTRODUCTION & OBJECTIVE: The non-invasive nature of penile intraepithelial neoplasia (PeIN) allows for curative penile sparing therapy and is recommended, in their guidelines, by the European Association of Urology (EAU). Treatment options include topical chemotherapy, immunotherapy, laser treatment, photodynamic therapy and surgical excision. Our primary aim was to evaluate the outcome of carbon dioxide (CO2) laser treatment of penile intraepithelial neoplasia. METHODS: A retrospective review of 47 patients who underwent CO2 laser ablation of PeIN, from May 2008 to June 2015, in our tertiary referral centre was performed...
December 7, 2016: Surgeon: Journal of the Royal Colleges of Surgeons of Edinburgh and Ireland
https://www.readbyqxmd.com/read/27942804/selective-improvement-of-peptides-imaging-on-tissue-by-supercritical-fluid-wash-of-lipids-for-matrix-assisted-laser-desorption-ionization-mass-spectrometry
#18
Shoko Matsushita, Noritaka Masaki, Kohei Sato, Takahiro Hayasaka, Eiji Sugiyama, Shu-Ping Hui, Hitoshi Chiba, Nobuyuki Mase, Mitsutoshi Setou
There is a high analytical demand for improving the detection sensitivity for various peptides in matrix-assisted laser desorption/ionization imaging mass spectrometry (MALDI-IMS) because exhaustive distribution analyses of various peptides could help to reveal the function of peptides in vivo. To improve the sensitivity of peptide detection, we used supercritical fluid of CO2 (scCO2) as washing solvent for a pretreatment to remove lipids. We evaluated whether our wash method using scCO2 with an entrainer improved the detection of peptides and suppressed lipid detection in MALDI-IMS...
December 9, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27919430/carbon-dioxide-insufflation-deflects-airborne-particles-from-an-open-surgical-wound-model
#19
P Kokhanenko, G Papotti, J E Cater, A C Lynch, J A van der Linden, C J T Spence
BACKGROUND: Surgical site infections remain a significant burden on healthcare systems and may benefit from new countermeasures. AIM: To assess the merits of open surgical wound CO2 insufflation via a gas diffuser to reduce airborne contamination, and to determine the distribution of CO2 in and over a wound. METHODS: An experimental approach with engineers and clinical researchers was employed to measure the gas flow pattern and motion of airborne particles in a model of an open surgical wound in a simulated theatre setting...
January 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/27910533/the-conceptual-design-of-interferometer-polarimeter-system-on-hl-2m
#20
Y Zhou, H X Wang, Y G Li, Y Li, W J Chen, J Yi, Z C Deng
HL-2M is a new medium-sized tokamak with major radius of 1.78 m, minor radius of 0.65 m, and aspect ratio of 2.8 and will be finished soon. In the conceptual design, a double-pass, horizontal view, multi-channel far-infrared (FIR) laser interferometer/polarimeter system (at 432 μm) is proposed to simultaneously measure the phase change and the Faraday rotation for density and current profile reconstruction. A vertical CO2 dispersion interferometer system (with wavelength of 10.6 μm and 5.3 μm) is designed to measure the line density, which will mainly be used for density feedback...
November 2016: Review of Scientific Instruments
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