Genistein Does Not Affect Vascularization and Blood Perfusion of Endometriotic Lesions and Ovarian Follicles in Dorsal Skinfold Chambers of Syrian Golden Hamsters

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Genistein treatment did not affect vascularization or blood perfusion of endometriotic lesions or ovarian follicles, indicating it is not suitable for antiangiogenic therapy of endometriosis.

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This paper studied whether genistein’s previously reported regression of endometriotic lesions is mediated by antiangiogenic effects. Endometrial fragments (to model endometriosis) and ovarian follicles from Syrian golden hamsters were transplanted into dorsal skinfold chambers, then treated with genistein (50 or 200 mg/kg) or vehicle, with vascularization and blood perfusion assessed over 14 days by intravital fluorescence microscopy and histology. Genistein inhibited neither angiogenesis nor perfusion in either graft type, as indicated by comparable microvessel density and histomorphology typical of well-vascularized lesions without regression by day 14. This paper is centrally about endometriosis — it tests whether genistein affects vascularization and blood perfusion in endometriotic lesions in vivo.

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Abstract

Genistein has previously been shown to cause regression of endometriotic lesions. In the current study, we investigated whether this observation is due to the antiangiogenic activity of genistein. Endometrial fragments and ovarian follicles were transplanted into dorsal skinfold chambers of hamsters, which were treated with genistein (50 and 200 mg/kg) or vehicle (control). Vascularization and blood perfusion of the grafts was analyzed over 14 days using intravital fluorescence microscopy and histology. Genistein inhibited angiogenesis neither in endometriotic lesions nor in ovarian follicles. This was indicated by a final microvessel density of the grafts, which was comparable to that of controls. Blood perfusion was not affected by genistein treatment. At day 14 after transplantation, the grafts of genistein- and vehicle-treated animals exhibited a histomorphology, which was typical for well-vascularized endometriotic lesions and ovarian follicles without any signs of regression. Thus, genistein may not be considered for the development of antiangiogenic treatment strategies in the therapy of endometriosis.
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Abstract

Genistein has previously been shown to cause regression of endometriotic lesions. In the current study, we investigated whether this observation is due to the antiangiogenic activity of genistein. Endometrial fragments and ovarian follicles were transplanted into dorsal skinfold chambers of hamsters, which were treated with genistein (50 and 200 mg/kg) or vehicle (control). Vascularization and blood perfusion of the grafts was analyzed over 14 days using intravital fluorescence microscopy and histology. Genistein inhibited angiogenesis neither in endometriotic lesions nor in ovarian follicles. This was indicated by a final microvessel density of the grafts, which was comparable to that of controls. Blood perfusion was not affected by genistein treatment. At day 14 after transplantation, the grafts of genistein- and vehicle-treated animals exhibited a histomorphology, which was typical for well-vascularized endometriotic lesions and ovarian follicles without any signs of regression. Thus, genistein may not be considered for the development of antiangiogenic treatment strategies in the therapy of endometriosis. Similar content being viewed by others

References

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Sci. 17, 568–577 (2010). https://doi.org/10.1177/1933719110364417 Published: Issue date: DOI: https://doi.org/10.1177/1933719110364417

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Endometrium Genistein Neovascularization, Physiologic Ovarian Follicle Animals Cricetinae Endometriosis Endometriosis Endometrium Endometrium Endometrium Female Genistein Genistein Mesocricetus Neovascularization, Physiologic Ovarian Follicle Ovarian Follicle Ovarian Follicle

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References (40)

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SciLite annotations

chemicals 7
genistein genistein genistein genistein genistein genistein genistein
organisms 3
syrian hamsters hamsters multicellular animals

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