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| Author(s): |
Lisley Inata Mambelli
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Medicina Veterinária e Zootecnia (FMVZ/SBD) |
| Defense date: | 2011-06-15 |
| Examining board members: |
Irina Kerkis;
Rodrigo Costa Mattos;
Maria Angélica Miglino
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| Advisor: | Irina Kerkis |
| Abstract | |
In horses, Stem Cell (SC) therapies are a promising tool to the treatment of many injuries, as tendon lesions and ligaments rupture. Besides the characteristics and the potential in tissue restoration, as well as, paracrine effects of SC, there is no information about the use of them for the treatment of systemic disorders which can commit horses, such as endometrosis. Endometrosis is a progressive and irreversible disease which is defined as active or inactive periglandular and stromal endometrial fibrosis, including glandular alterations within fibrotic foci. Modifications induced by this disease alter the surface of endometrium which, in consequence, led to infertility. Conventional treatments do not reduce the fibrotic process or even help to restore fertility. Considering the importance of this disease, the goal of this project is to use SC, previously isolated and characterized by our group, in the treatment of endometrosis, in order to reduce inflammatory process and periglandular fibrous tissue formation, typical of this disease. Six mares with confirmed endometrosis were synchronized for the use as animal model in this work. In four of animals we infused stem cells previously marked with Vybrant, and the other two (control group) were infused with saline solution. Before the infusion, uterine biopsies and also samples for cytology were collected. After 7, 21 and 61 days of cells infusion new biopsies and cytology samples for analysis were collected. We observed, by direct fluorescence, the presence of marked cells grafted in both body and uterine horns of treated animals. Through histological analysis we observed a significant improvement in morphology and organization of uterine tissue, as well as endometrial glands, after infusion of stem cells, this result was observed progressively throughout the days. Furthermore, we noted a decrease in the process of periglandular tissue fibrosis, after infusion of cells. Cytology analysis showed that the animals have no uterine inflammation before or after infusion of SC. Our data suggest that there are benefits of using stem cells from equine adipose tissue in the treatment of uterus tissue affected by endometriosis, which can only be clinically validated after pregnancy of these animals. (AU) | |
| FAPESP's process: | 09/06764-7 - Equine Adipose Tissue-Derived Progenitor Cells. Study of their Potential for the Treatment of Endometrosis. |
| Grantee: | Lisley Inata Mambelli |
| Support Opportunities: | Scholarships in Brazil - Master |