An automated routine method was developed for the determination of trace metals using a flow injection system into a direct current plasma spectrometer. The characteristic emission in the 'Spectra- Metrics' three-electrode jet is channelled through an echelle grating to the detector of the instrument. The emission signal is continuously recorded, and, after digitalization, calculated and record...

Anionic detergents have been shown to lower markedly the differential-pulse voltammetric peak currents obtained for 12-molybdophosphate and 12molybdosilicate in aqueous solutions, but when ethanol water or acetone water (1 + 1 V / V ) solutions are used there is no interference. Static differential-pulse voltammetric and flow injection voltammetric procedures have been developed for the determi...

PURPOSE To investigate the involvement of the cornea during endotoxin-induced uveitis (EIU) in the rat and the effect of Ngamma-nitro-L-arginine methyl ester (L-NAME) as nitric oxide synthase (NOS) inhibitor, administered by iontophoresis. METHODS EIU was induced in Lewis rats that were killed at 8 and 16 hours after lipopolysaccharide (LPS) injection. The severity of uveitis was evaluated cl...

OBJECTIVES To assess the effect of bevacizumab injection on connective tissue growth factor (CTGF) and vascular endothelial growth factor (VEGF) in the ocular fluids of patients with diabetic traction retinal detachment, and to determine whether intraoperative and postoperative complications are decreased in eyes given adjunctive preoperative bevacizumab injection. METHODS Twenty eyes of 19 pat...

The aim of this study was to evaluate the activity of the ethanolic extract of geopropolis (EEGP) from Melipona scutellaris and its fractions on the modulation of neutrophil migration in the inflammatory process, and the participation of nitric oxide (NO) pathway, as well as to check the chemical profile of the bioactive fraction. EEGP and its aqueous fraction decreased neutrophil migration in ...

Propofol has the disadvantage of pain on injection. A higher partition of propofol in the aqueous phase of the preparation causes a higher incidence of pain on injection while addition of 1% lignocaine to propofol reduces pain. The low concentration of this local anaesthetic and the rapid pain relief observed indicates that mechanisms other than local anaesthesia are involved, that is change in...

There are some reports in ancient medicinal literature that aqueous extracts of the leaves of Teucrium polium show analgesic effects. This prompted us to investigate the analgesic effect of the leaves of the plant using Tail-Flick and Fomalin tests. For this purpose, male NMRI rats weighing 220-260 g were used in all experiments. The aqueous extract of the plant was injected intraperitoneally a...

The permeability of the blood-retinal and blood-aqueous barriers to fluorescein (F) and the rate of aqueous flow can be estimated by measurements of F in the vitreous, aqueous, and plasma after systemic administration. F is commonly measured by fluorescence, but fluorescein glucuronide (FG), a metabolite of F, also fluoresces. To assess the influence of FG on the quantitation of F by fluorescen...

PURPOSE. To investigate the anti-inflammatory effect of aminoimidazole carboxamide ribonucleotide (AICAR), an analog of adenosine monophosphate (AMP), in endotoxin-induced uveitis (EIU). METHODS. EIU was induced by subcutaneous injection of lipopolysaccharide (LPS) (200 μg) in Lewis rats. AICAR (50 mg/kg, intraperitoneally) was given 6 hours prior and at the same time as LPS injection. Clinical...

PURPOSE To evaluate the levels of aqueous humor cytokines in the eyes of patients with central serous chorioretinopathy (CSC) before an intravitreal injection of bevacizumab. METHODS In a prospective interventional trial, 20 eyes of 20 patients with symptomatic CSC of at least 3 months duration and 20 eyes of 20 patients with cataract as control were included. Eyes with CSC received a single ...