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  • Title: Development of a technique for transcervical collection of uterine tissue in bitches.
    Author: Günzel-Apel AR, Wilke M, Aupperle H, Schoon HA.
    Journal: J Reprod Fertil Suppl; 2001; 57():61-5. PubMed ID: 11787191.
    Abstract:
    Transcervical collection of endometrial tissue specimens is a valuable and well established tool for the diagnosis of reproductive disorders in cows, mares and women, but it is not used currently in bitches. Endometrial biopsy samples were collected by transcervical cannulation from the cranial uterine body at defined stages of the oestrous cycle using biopsy forceps. In study 1, the histology of 45 biopsy specimens taken from 23 Beagle bitches were compared with larger tissue samples collected post mortem. For further evaluation of representative biopsy specimens, the expression of oestrogen and progesterone receptors was determined. Only 31.1% of the biopsy samples taken from bitches could be evaluated and they showed stroma, capillaries, luminal epithelium, glandular ducts and apical glands; however, basal glands and myometrium were not observed. Biopsy findings were in agreement with the diagnosis of the uterine specimens concerning endometrial differentiation, inflammatory and degenerative lesions. The expression of oestrogen and progesterone receptors was slightly lower in the biopsy samples. In study 2, a total of 49 serial biopsy samples were taken from 12 Beagle bitches. In eight bitches, the manipulation resulted in a haemomucometra. Treatment with PGF2 alpha and antibiotics led to a clinical cure in five of these dogs, two of which were mated successfully during the next oestrus. Three animals had to undergo ovariohysterectomy. Owing to the small proportion of biopsy specimens that was suitable for analysis and the high risk of biopsy-related endometritis, transcervical biopsy collection cannot be recommended as a routine technique in bitches.
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