Quantification of endometriotic lesions in a murine model by fluorimetric and morphometric analyses

Sylvie Defrère, Anne Van Langendonckt, Reinaldo González Ramos, Reinaldo Ramos, Mathieu Jouret, Marcel Mettlen, Jacques Donnez
Human Reproduction · 2005 · vol. 21(3) , pp. 810–817 · doi:10.1093/humrep/dei387 · PMID:16293650 · W2097989839
article OA: bronze CC0 ⤵ 21 in-corpus citations
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This study developed and validated fluorimetric and morphometric methods to quantify endometriosis-like lesions in a nude mouse model, finding strong correlation between the two techniques for reliable lesion assessment.

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Abstract

BACKGROUND: In animal models of endometriosis, the identification and quantification of lesions originating from human endometrium is often hampered by the small size of the implants and their embedding in murine tissue. The purpose of the present study was to develop two new methods of quantifying endometriosis-like lesions in a nude mouse model: fluorimetry and morphometry. METHODS: Human menstrual endometrium was labelled using a fluorescent tracker, carboxyfluorescein diacetate, succinimidyl ester (CFDA-SE), and transplanted into the pelvic cavity of mice by injection through the peritoneum after performing a cutaneous incision. After 5 days, lesions were recovered by laparotomy. The fluorescence of the recovered endometriotic lesions was measured. Endometrial stroma and glands were immunostained in lesion sections with anti-CD10 and anti-CK22 antibodies, and their surface area was evaluated by morphometric analysis. RESULTS: Fluorescent labelling allows identification of lesions not visible macroscopically. A good correlation was observed between fluorimetry and morphometry (r=0.88) applied for lesion quantification. CONCLUSIONS: Fluorimetric evaluation combined with morphometric analysis of endometriosis-like lesions allows objective and reliable recording of endometriosis development in a nude mouse model. This quantification method could therefore be useful for future pharmacological and toxicological studies.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Endometrium Animals Endometriosis Endometrium Endometrium Female Humans Immunohistochemistry Male Mice Mice, Nude Models, Animal Neprilysin Neprilysin Peritoneal Cavity Transplantation, Heterotopic

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