The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Apraclonidine protection of the blood-aqueous barrier from traumatic break-down.

This study investigated the effects of apraclonidine hydrochloride 1% eye drops on blood-aqueous barrier in 108 pigmented rabbits. The effects of pretreatment with dapiprazole and yohimbine, and a comparison with clonidine 0.125% eye drops are also reported. The disruption of blood-aqueous barrier was obtained by argon laser burning of the iris. The degree of permeability of the barrier was deduced by the amount of proteins in aqueous humor 60 min after laser application. Intraocular pressure and pupil diameter were also studied. Protein content in aqueous humor was 0.72 +/- 0.26 g/l in control rabbits that did not receive any treatment; 5.98 +/- 4.23 g/l in rabbits instilled with placebo eye drops and treated by laser burning of iris; 0.43 +/- 0.25 g/l in rabbits that received apraclonidine eye drops prior to laser burning; 2.19 +/- 1.3 g/l in rabbits that received apraclonidine eye drops immediately after laser application; 0.35 +/- 0.08 g/l in rabbits that received apraclonidine 1% eye drops both before and after laser application. Rabbits treated with clonidine 0.125% had a protein content in aqueous humor of 5.45 +/- 2.08 g/l after laser application. Dapiprazole 0.5% eye drops prior to apraclonidine led to a protein content in aqueous humor of 1.93 +/- 2.13 g/l; yohimbine 0.3% eye drops prior to apraclonidine led to a protein content of 0.70 +/- 0.40 g/l. Protein content in aqueous humor was 0.93 +/- 0.36 g/l, 0.82 +/- 0.899 g/l and 1.68 +/- 1.39 g/l in rabbits treated with yohimbine 0.3, 0.6 and 1.2 mg/kg i.v. and then with apraclonidine 1% eye drops. In one group of rabbits, the penetration into the aqueous humor of Evans blue injected intravenously was also studied. Evans blue content in aqueous humor was 0.03 +/- 0.08 mg/100 ml in control rabbits; 0.92 +/- 0.53 mg/100 ml in placebo rabbits treated by laser; and 0.28 +/- 0.19 mg/100 ml in apraclonidine rabbits treated by laser. Apraclonidine eye drops led to a decrease in IOP and prevented IOP rise following argon laser application. Placebo treated rabbits had a 20% increase in IOP following laser application. Apraclonidine-treated eyes showed mydriasis and blanching of the conjunctiva. These effects were not affected by pretreatment with dapiprazole or yohimbine. In these experiments, the treatment with apraclonidine 1% eye drops completely protected the blood aqueous barrier from the disruption caused by laser burning of the iris. The protection was less effective when apraclonidine was applied after laser burnings.[1]

References

  1. Apraclonidine protection of the blood-aqueous barrier from traumatic break-down. Bonomi, L., Bellucci, R., Pagliarusco, A., Stefani, L. Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and Therapeutics. (1995) [Pubmed]
 
WikiGenes - Universities