Therapeutic Effects of Stromal Stem Cells Derived from Ovarian Tissue in a Cyclophosphamide-Induced Rat Model of Ovarian Failure

Several human studies show positive signals, while research methods and sample sizes continue to develop.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Chemotherapeutic agents used in cancer treatment cause damage to both oocytes and granulosa cells, resulting in follicle loss and consequently premature ovarian failure. In this study the animals were randomly assigned to three groups: control (n = 6), chemotherapy (n = 6), and stem cell treatment (n = 6). Ovarian failure was induced in the chemotherapy and stem cell groups by intraperitoneal administration of cyclophosphamide (200 mg/kg) on days 1 and 8. Ovarian stromal stem cells (OSSCs) were isolated from the ovaries of 4-week-old donor rats (n = 2) using the explant culture method. On day 9, isolated stromal cells were transplanted bilaterally into the ovaries of rats in the stem cell group. Surface markers were analyzed by flow cytometry in OSSCs, and their adipogenic, osteogenic, and chondrogenic differentiation potentials were evaluated under appropriate in vitro conditions. The number of follicles and the morphological features of the ovarian tissue were histologically examined using hematoxylin and eosin (H&E) staining. Caspase 3 expression in ovarian tissue was analyzed using TUNEL and immunohistochemistry methods. Flow cytometry analysis of isolated ovarian stromal cells showed that CD54, CD90 and CD45 surface markers were expressed, while CD29 was expressed at a lower level. These findings confirmed the ability of OSSCs to differentiate into adipogenic, osteogenic,

Evidence level

Several human studies show positive signals, while research methods and sample sizes continue to develop.

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