BACKGROUND Control of the mosquito vector population is the most effective strategy currently available for the prevention of dengue fever and the containment of outbreaks. Photo-activated oxidants may represent promising tools for developing effective, safe and ecofriendly novel larvicides. The purpose of this study was to evaluate the potential of the synthetic meso-substituted porphyrin meso...

OBJECTIVES To compare the sensitivity and specificity of C[14] urea breath test with histopathological findings in biopsies obtained through endoscopy. METHODS In this cross-sectional study, conducted at the Medical Faculty Ankara University, Ankara, Turkey between January and October 2009, 100 patients aged 65 and above who fulfilled the criteria for inclusion were enrolled. Oesophago-gastro...

Surfactant predominantly comprises phosphatidylcholine (PC) species, together with phosphatidylglycerols, phosphatidylinositols, neutral lipids, and surfactant proteins-A to -D. Together, dipalmitoyl-PC (PC16:0/16:0), palmitoyl-myristoyl-PC (PC16:0/14:0), and palmitoyl-palmitoleoyl-PC (PC16:0/16:1) make up 75-80% of mammalian surfactant PC, the proportions of which vary during development and i...

Some investigators tried to rebut the C14 dating by pointing out the problems with this method. All biological materials do not absorb C14 at the same rate and there was no absolute proof that the amount of C14 in the atmosphere had remained invariant before the industrial revolution. Ogden (1) pointed out these discrepancies in 1977, but since that time calibration methods have been developed ...

PURPOSE Automated perimetry uses a 3.5 log unit (35dB) range of stimulus contrasts to assess function within the visual field. Using 'Size III' stimuli (0.43°), presenting stimuli within the highest 15dB of available contrast may not increase the response probability at locations damaged by glaucoma, due to retinal ganglion cell response saturation. This experiment examines the effect of instea...

objective: in previous studies it has been emphasized that the site of morphine action may be either in the embryo or the placenta. in the present study, we attempt to identify the site of morphine action on the fetal section of wistar rat placenta by using c14-morphine. materials and methods: in this study (experimental), female wistar rats (weights: 170-200 g) were mated with male rats and th...

Kelly and associates (8, 10, 20) have demon strated that phosphorus-32 is incorporated to a greater extent into the liver, kidney, and spleen deoxyribonucleic acid in mice bearing mammary carcinomas than into those of normal control mice. Comparable results were also obtained by those investigators (19) when tumor-bearing mice were given injections of either formate-carbon-14 (C14) or glycine-2...