Publications by authors named "N R Salvetti"
Despite the involvement of both immune cells and soluble factors in the etiopathogenesis of cystic ovarian disease (COD), the precise interplay between these components in this reproductive condition remains unclear. Based on this, in the present study we aimed to evaluate the expression of key molecules involved both locally and systemically in the recruitment, infiltration and activation of immune cells in Holstein cows diagnosed with follicular cysts (N = 5). For this, animals from commercial dairy farms located in the milk-productive region of Santa Fe, Argentina were included after their diagnosis were confirmed by ultrasonographic examination and hormonal evaluation.
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- The study investigates the role of various cytokines in the reproductive tract of dairy cows and their potential impact on the timing of conception.
- High levels of IFNγ protein expression were found to be linked to shorter intervals between parturition and conception, indicating its potential importance in facilitating early pregnancy.
- Conversely, while other cytokines such as TNFα, IL-6, IL-4, and TGF-β showed no significant association with conception timing, lower levels of IL-8 may suggest a trend towards delayed conception.
Article Synopsis
- * The study focused on a tumor found in the penis of a bull from a dairy farm in Santa Fe, Argentina, employing staining and immunohistochemical analysis to characterize it.
- * Findings indicated the tumor was a neurofibrosarcoma, a type of nerve sheath tumor, marking the first recorded case of this tumor in a bull's penis.
One of the initial causes of cystic ovarian disease (COD) is a failure in the normal ovulation mechanism. This study aimed to characterize the populations of immune cells (T-lymphocytes, B-lymphocytes, monocytes-macrophages and granulocytes) present in the ovary of cows with COD and induced follicular persistence, and evaluate their relation with follicular persistence and cyst formation. The follicular persistence model was developed using a progesterone (P4) slow-release intravaginal device, to obtain subluteal concentrations of P4.
View Article and Find Full Text PDFThis study investigated the effect of hCG or GnRH on structural changes of the corpora lutea (CL) and the regulation of the expression of steroidogenic enzymes involved in P secretion in post-ovulatory (po-CL) and accessory CL (acc-CL). Sixty-four ewes were assigned to three groups receiving: 300 IU of hCG (hCG) or 4 µg Buserelin (GnRH) or 1 mL of saline solution (Control) on Day (d) 4 post artificial insemination (FTAI). Laparoscopic ovarian were performed on d 4, 14 and, 21 post-FTAI to determine the numbers of CL.
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