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We determined the prevalence of Y chromosome deletions in a population of 60 Brazilian nonobstructive azoospermic and severely oligozoospermic men. PCR-based screening of microdeletions was performed on lymphocyte DNA for the presence of 14 sequence-tagged sites (STS) located in the azoospermic factor (AZF) on the Yq chromosome. All STS were amplified(More)
STUDY QUESTION What are the effects of smoking on the functional aspects of the sperm, the levels of lipid peroxidation and the protein profile of seminal plasma in patients with varicocele? SUMMARY ANSWER In men with varicocele, smoking is associated with altered semen quality, decreased sperm functional integrity and seminal oxidative stress.(More)
OBJECTIVE To determine whether grade of varicocele determines extent of alterations to semen quality in adolescents. DESIGN Prospective study. SETTING Patients recruited from a local public school. PATIENT(S) Adolescents (14 to 18 y of age) attending a local public school. INTERVENTION(S) Scrotal palpation in a temperature-controlled room,(More)
OBJECTIVE To assess the effect of varicocelectomy on sperm function (DNA integrity and mitochondrial activity) and levels of lipid peroxidation in seminal plasma of adolescents. DESIGN Prospective study. SETTING Patients recruited from a local public school. PATIENT(S) Adolescents (14-19 years old), Tanner stages IV or V with varicocele grades II or(More)
PURPOSE This research proposed to study the changes in lipid composition in cumulus cells (CCs) from women who achieved pregnancy compared with women who did not, after in vitro fertilization treatment. This approach has the potential to provide novel information on the lipid metabolism of the CCs and as an additional method to predict pregnancy. METHOD(More)
OBJECTIVE To analyze the characteristics of patients with testicular germ cell cancer and compare patients' sperm quality according to histologic type (seminomatous and nonseminomatous tumors). DESIGN Prospective study. SETTING Sperm bank at a university. PATIENT(S) One hundred consecutive patients with testicular tumor who had been referred to our(More)
PURPOSE To assess the effect of leukocytospermia and semen processing on sperm DNA and mitochondria. METHODS Twenty-two patients with and 41 without leukocytospermia were included. Sperm DNA fragmentation was assessed by the Comet assay, and mitochondrial activity by a colorimetric method for active mitochondria. Semen was processed using Percoll, and(More)
Impaired testicular function, i.e., hypogonadism, can result from a primary testicular disorder (hypergonadotropic) or occur secondary to hypothalamic-pituitary dysfunction (hypogonadotropic). Hypogonadotropic hypogonadism can be congenital or acquired. Congenital hypogonadotropic hypogonadism is divided into anosmic hypogonadotropic hypogonadism (Kallmann(More)
UNLABELLED What's known on the subject? and What does the study add? The relationship between high levels of BMI and changes in altered standard semen analysis parameters are described in the literature. However, the functional characteristics of the sperm are essential to complete the evaluation of male infertility. Thus, this study provides important(More)