Variations of lacrimal fluid peroxidase activity in female and male rats.

Abstract:

:Previous research from this laboratory showed that human lacrimal fluid peroxidase has cyclic variations during the menstrual cycle, correlated with plasma levels of 17beta-oestradiol. In the present investigation, variations of enzyme activity and total protein content during the oestrous cycle of young adult female rats are analysed. Effects from circadian rhythm and a gender-related influence are also examined. In female rats, as in women, lacrimal fluid peroxidase activity shows cyclic variations; in fact, it significantly (p < 0.05) changes during the different phases of the oestrous cycle. In contrast, in males such variations do not occur. Thus, we suggest that gender seems to exert a significant influence on the secretion of this specific tear protein, probably by a direct effect of oestrogens.

journal_name

Ophthalmic Res

journal_title

Ophthalmic research

authors

Madia F,Liberati V,de Feo G,Marcozzi G

doi

10.1159/000055666

subject

Has Abstract

pub_date

2001-05-01 00:00:00

pages

176-9

issue

3

eissn

0030-3747

issn

1423-0259

pii

55666

journal_volume

33

pub_type

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