Renin mRNA is synthesized locally in rat ocular tissues.

Abstract:

:Components of the Renin Angiotensin System (RAS) have been detected in ocular tissues and fluids. The source of the ocular RAS proteins is unknown but possibilities include diffusion or leakage from the systemic circulation, specific uptake from the blood, or local synthesis. We have used RT-PCR and in situ hybridization (ISH) to show that renin mRNA is present in ocular tissues from 3 strains of rats. By RT-PCR, we found 10 of 15 ciliary body samples, 13 of 16 iris samples, and 1 of 3 retina samples were positive for renin mRNA. Also, 6 of 6 brain and 7 of 8 kidney samples were positive. Using ISH, we found renin mRNA in the ciliary muscle adjacent to the sclera extending into the choroid. Tissue near the outflow channels of the anterior chamber angle also labeled. Retinal labeling was weak but present in the nerve fiber layer. Clusters of grains, possibly representing blood vessels, were also seen in the ciliary body, iris, and retina using ISH. These results suggest the presence of a local ocular RAS.

journal_name

Curr Eye Res

journal_title

Current eye research

authors

Brandt CR,Pumfery AM,Micales B,Bindley CD,Lyons GE,Sramek SJ,Wallow IH

doi

10.3109/02713689409047011

subject

Has Abstract

pub_date

1994-10-01 00:00:00

pages

755-63

issue

10

eissn

0271-3683

issn

1460-2202

journal_volume

13

pub_type

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