J. Anim Sci.
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J. Anim Sci. 1970. 31:1191-1194.
© 1970 American Society of Animal Science
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Influence of Ovarian Status and Intrauterine Devices on the Diamine Oxidase and Histamine Content of Sheep Endometrium

B. S. Cooper1, H. W. Hawk1 and A. Scommegna2

U. S. Department of Agriculture and Michael Reese Hospital and Medical Center and University of Chicago

Abstract

A plastic spiral (IUD) was inserted by surgery into one uterine horn of 28 ewes; 24 other ewes were sham-operated. The ovaries were removed from one-fourth of the ewes of each group. All ewes were autopsied about 10 weeks later, when the cycling ewes were in estrus or 3 or 10 days post-estrus. Diamine oxidase (DAO) and histamine concentrations were determined in stromal and caruncular tissue of the endometrium.

Diamine oxidase concentrations were considerably higher in stromal than in caruncular tissue. The concentrations of both DAO and histamine varied significantly among ewes of the four endocrine states; DAO levels were highest in 10-day luteal phase and in ovariectomized ewes, and histamine levels were higher in ovariectomized than in cycling ewes. The plastic IUD tended to decrease the DAO and histamine concentrations in the IUD-bearing uterine horn.

Footnotes

1 Animal Husbandry Research Division, A.R.S., U.S.D.A., Beltsville, Maryland 20705. Supported in part by a reimbursable agreement with the National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland.

2 Section on Gynecic Endocrinology, Department of Obstetrics and Gynecology, Michael Reese Hospital and Medical Center, Chicago, Illinois 60616 and Pritzker School of Medicine, University of Chicago. The technical assistance of Chresteen Seals is greatly appreciated.






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