Publications by authors named "Anne Kemmer Souza"
The microbiota plays an important role in numerous physiological processes, pathogenesis, development, and metabolism in different animal species. In humans, several studies have demonstrated an association between the vaginal microbiota and fertility rates, and even success in assisted reproduction techniques. In the context of cattle reproduction, although few studies have addressed the microbiota in a healthy state (which is not associated with diseases that affect the reproductive tract of cows), changes in its composition also seem to influence fertility.
View Article and Find Full Text PDFInvestigation of the vaginal microbiota of dairy cows through genetic sequencing of short (Illumina) and long (PacBio) reads and associations with gestational status.
PLoS One
August 2023
Article Synopsis
- The study focuses on understanding the vaginal microbiota of cows and its importance in reproduction and fertility, using long-read sequencing (PacBio) to characterize it at the species level.
- Researchers compared results from PacBio with those obtained from short-read sequencing (Illumina), noting that while Illumina captured more species, PacBio identified more unique, rare species.
- The findings reveal that the sequencing method can significantly affect the analysis of vaginal microbiota, suggesting a need for improved databanks and methodologies in future research.
Correlation of testicular artery Doppler velocimetry with kinetics and morphologic characteristics of epididymal sperm in dogs.
Reprod Domest Anim
June 2020
Sperm quality can be affected by a reduction in testicular blood flow, which can be measured by Doppler ultrasonography. The aim of this study was to correlate the Doppler velocimetry of the testicular artery with kinetics of the epididymal spermatozoa in dogs. Twenty-two dogs (44 testicles) were evaluated by Doppler ultrasonography in five regions of the testicular artery before orchiectomy.
View Article and Find Full Text PDFTesticular tissue maintenance is performed by the testicular artery, and the hemodynamics of this artery can be evaluated using Doppler ultrasonography. The aim of this study was to characterize the peak systolic velocity (PSV), end diastolic velocity (EDV), pulsatility index (PI) and resistivity index (RI) of five regions of the testicular artery in dogs, including two proposed regions and three that have been previously described. Twenty-two dogs were used, and the PSV, EDV, PI and RI of the testicular artery were measured in five regions: proximal, medial and distal supratesticular; marginal; and intratesticular.
View Article and Find Full Text PDFThe objective of this study was to identify and compare domestic feline sperm subpopulations, chilled at -1 °C for 24 and 48 h, as well as to analyze the sperm frequency in different subpopulations. Ten adult cats were used. Sperm collection was performed using electroejaculation (EEJ).
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