Evaluating Retinal Circulation Using Video Fluorescein Angiography in Control and Diabetic Rats
作者:
ErikSven,
ClermontAllen C.,
ShibaTeruo,
KingGeorge L.,
UusitaloHannu,
期刊:
Current Eye Research
(Taylor Available online 1992)
卷期:
Volume 11,
issue 4
页码: 287-295
ISSN:0271-3683
年代: 1992
DOI:10.3109/02713689209001782
出版商: Taylor&Francis
数据来源: Taylor
摘要:
Video fluorescein angiography has been used to evaluate retinal circulatory parameters in diabetic and non-diabetic Sprague-Dawley rats. Video fluorescein angiograms were recorded from the retina using a modified retinal fundus camera following a 5 ul bolus injection of sodium fluorescein dye into the jugular vein. Retinal circulatory parameters were measured using computer assisted image analysis. These analyses were performed on 25 diabetic rats with 1 week duration of diabetes and 26 matched, non-diabetic, rats. There was a significant (p-.0001) increase in retinal Mean Circulation Time (MCT) in the diabetic group (1.83±0.40 s) compared to the control group (1.09±0.27 s). There were no significant differences in arterial or venous diameters comparing diabetic and control groups. In a separate paired experiment, measurements were made from the same animals both before and after one week duration of diabetes. A paired t-test analysis demonstrated significantly increased MCT times in the 6 diabetic animals (p-.001) while there was no significant differences detected in the 4 corresponding control animals. These results indicate that significant increases in retinal circulation times can be measured as early as 1 week after strepto-zotocin induced diabetes in this animal model.
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