Disease relevance of argon

• METHODS: Argon laser treatment of the anterior chamber angle was used to induce chronic ocular hypertension (COHT) in the right eye of 18 macaque monkeys [1].
• Venous gas embolism from an Argon coagulator [2].
• A murine ascites tumour was treated with intraperitoneal haematoporphyrin derivative (HPD) and laser light (10mW, 514nm, Argon laser) [3].
• CONCLUSION: Argon laser trabeculoplasty is effective in pigmentary glaucoma [4].
• CONCLUSIONS: Argon plasma coagulation of Barrett's esophagus is safe and effective [5].

High impact information on argon

• Here, Jeffrey Melnick and Yair Argon review the known ER chaperones, summarize their roles in the maturation of antigen receptors, and discuss how they may affect lymphocyte differentiation and function [6].
• Recanalization of completely occluded superficial femoral or popliteal arteries was attempted in 18 patients with use of an Argon laser-mediated thermal probe [7].
• After 7 days, 200 spots of laser burn over 360 degrees were delivered by an Argon laser (620-637 nm; 200 mW; 200 mm; 0.2 seconds) aimed at the ink deposits in the trabecular meshwork [8].
• However, the leading FRET pair of this class (CFP/YFP) entails suboptimal donor excitation by Argon lasers, thereby hindering FRET imaging on many confocal microscopes [9].
• GFP-AQP lateral mobility was measured by irreversibly bleaching a spot (diameter 0.8 microm) on the membrane with an Argon laser beam (488 nm) and following the fluorescence recovery into the bleached area resulting from GFP translational diffusion [10].

Chemical compound and disease context of argon

• CONCLUSIONS: Argon plasma coagulation is an effective and safe treatment for hemorrhagic radiation proctitis that has been refractory to topical formalin therapy [11].
• After 1 h hypoxia produced by Argon gas and 0, 2, 4, and 20 h reoxygenation the cell loss was calculated by propidiumiodide assay and the cell activity was investigated by Alamar Blue assay colorimetric measurement [12].
• Rhodamine-123 (Rh-123) is a mitochondrial-specific dye that has recently proven to be an effective fluorochrome for photo-dynamic therapy of squamous carcinoma cells and melanomas with the Argon laser [13].
• Preliminary experiences with the use of three lasers (CO2, Nd: YAG, Argon) in some posterior fossa tumors in childhood [14].

Biological context of argon

• INTERVENTION: Argon laser photocoagulation was applied to the RPE in the hole bed, and FGX with 20% sulfur hexafluoride was then performed, followed by 2 weeks with the patient in a prone position [15].
• The Argon beam coagulator is an electrosurgical device used for hemostasis during various operations [16].
• Twenty-five patients with focal RNFL defects, evaluated by means of Argon-blue scanning laser ophthalmoscopy (SLO), underwent an automated 30 deg central visual field examination and a microperimetry with SLO [17].
• The metastable argon atoms (Ar*: 11.55 eV for (3)P(2) and 11.72 eV for (3)P(0)) were generated by the negative-mode corona discharge of atmospheric-pressure argon gas [18].
• Using argon laser blue light reduces ophthalmologists' color contrast sensitivity. Argon blue and surgeons' vision [19].

Anatomical context of argon

• Small droplets were then introduced into inductively coupled plasmas (ICP) sustained in either Ar or He [20].
• CONCLUSION: Argon laser trabeculoplasty produces a greater disruption of the blood-aqueous barrier than DLT [21].
• According to our results, Argon-ion-, Nd:YAG-, and diode-lasers seem to be useful for an effective and bloodless reduction of hyperplastic turbinates [22].
• Manipulations tested here were surgical conjunctival biopsy, low-energy Argon laser treatment (80 mJ) closing a venule temporarily, high-energy argon laser treatment (480 mJ) to occlude a venule firmly, and 193 nm eximer laser-based conjunctival phototherapeutic keratectomy (160 mJ) [23].
• Histologic evaluation at 14 days revealed the greatest degree of inflammatory response in those tendons repaired with the Argon laser [24].

Associations of argon with other chemical compounds

• A new pH indicator, seminaphthofluorescein (SNAFL)-calcein acetoxymethyl ester, was used for intracellular pH (pHi) measurement in living MDCK cells with a laser scanning confocal microscope (LSCM) equipped with an Argon/Krypton laser and dual-excitation and dual-emission (FITC/Texas Red) filter set [25].
• This study compares the incidence of local tumor recurrence following primary excision with the CO2 laser, Nd:YAG laser (contact), Argon Beam Coagulator, or electrocautery [26].
• The exhalation dynamics of carbon monoxide (CO), argon (Ar), and lung volume from a single-breath experiment are analyzed simultaneously [27].
• METHODS: Argon laser lesions were inflicted on the retinas of 36 rats and were followed immediately by intraperitoneal injections of high-dose methylprednisolone or saline [28].
• In Nembutal-anesthetized male Wistar rats and in fawn hooded bleeder rats, vascular lesions were produced with a Hadron-512-Ruby-bio-laser or with a Coherent CR-2 supergraphite ion laser (Argon laser) [29].

Gene context of argon

• PURPOSE: Argon laser photocoagulation slows photoreceptor degeneration in the Royal College of Surgeons (RCS) rat, as does intravitreal injection of basic fibroblast growth factor (bFGF) [30].
• The structure change during the growth processes was observed by transmission electron microscopy (TEM) and the variation in concentrations of gold species in the aqueous solution was monitored by UV-vis spectra and Inductively Coupled Argon Plasma Emission Spectrophotometer (ICAP) [31].
• Spectra were recorded with the 514 nm Argon laser line during excitation times of 1 second (20 microW on the preparation) at 5 min intervals for 30 or 60 min, either at points in determined cell sites or serially throughout the cells [32].
• Lasers for otosclerosis: CO2 vs. Argon and KTP-532 [33].
• PATIENTS AND METHODS: We retrospectively analyzed 23 eyes of 21 patients with high myopia (>6.0 diopters and/or axial length >26 mm) with juxta foveal CNV treated with direct Argon green laser photocoagulation [34].

Analytical, diagnostic and therapeutic context of argon

• These 136 patients were randomly allocated to Argon laser photocoagulation or to no additional therapy (controls) at the time of initial endoscopy [35].
• METHODS: Argon laser trabeculoplasty, using typical clinical treatment parameters, was applied to anterior segment organ cultures [36].
• METHODS: Argon laser lesions were created in the retinas of 36 DA rats, and were followed immediately by intraperitoneal injections of MK-801 (2 mg/kg) or saline [37].
• METHODS: Fundus reflectance and autofluorescence maps at 488 and 514 nm Argon laser wavelengths were acquired in 53 healthy subjects with a custom-built scanning laser ophthalmoscope [38].
• To assess more fully the risk to normal tissue exposed to accelerated heavy particles in the space program and during radiotherapy on earth, the cytopathological effects of a variety of doses of accelerated (570 MeV/amu) Argon (40Ar) ions on the rat lens were investigated [39].

References