August 1983
Volume 24, Issue 8
Articles  |   August 1983
Synthesis of slow reacting substance-like activity in rabbit conjunctiva and anterior uvea.
Investigative Ophthalmology & Visual Science August 1983, Vol.24, 1079-1085. doi:
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      P S Kulkarni, B D Srinivason; Synthesis of slow reacting substance-like activity in rabbit conjunctiva and anterior uvea.. Invest. Ophthalmol. Vis. Sci. 1983;24(8):1079-1085.

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      © ARVO (1962-2015); The Authors (2016-present)

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The ability of rabbit conjunctiva and anterior uvea to synthesize lipoxygenase products was assessed. Using autoradiographic techniques, we demonstrate that rabbit anterior uvea synthesizes 5 and 12 lipoxygenase products such as 12-HETE, 5-HETE and 5,12-DiHETE and cyclooxygenase product HHT from 14C-arachidonic acid. Indomethacin pretreated conjunctiva and anterior uvea generated slow reacting substance (SRS)-like activity from arachidonic acid in the presence of reduced glutathione and A23187. This SRS-like activity contracted guinea pig ileum. Specific SRS-like activity antagonist FPL-55712 inhibited the contractions of guinea pig ileum induced by SRS-like substance generated by either conjunctiva or anterior uvea. The activity was still present in the sample following extraction with organic solvents. SRS-like activity was destroyed by arylsulfatase and its generation was prevented by either boiling or pretreatment with cyclooxygenase/lipoxygenase inhibitors, BW755 and nordihydroguaiacetic acid. These results indicate that following cyclooxygenase inhibition by indomethacin rabbit conjunctiva and anterior uvea generate SRS-like activity from arachidonic acid via lipoxygenase pathways.


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