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Publications (4)13.16 Total impact

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    ABSTRACT: To evaluate the presence of antisperm antibodies in testicular cancer patients 1 month after orchiectomy and before radiotherapy or chemotherapy. Clinical study. Department of andrology and seminology at a university hospital. One hundred ninety patients with testicular cancer. Determination of semen parameters and autoimmune reaction evaluated on the sperm surface and in blood serum. Autoimmune reaction on the sperm surface by the direct immunobead test (IBT), and in blood serum by the indirect IBT and the gelatin agglutination test (GAT), was evaluated 1 month after orchiectomy and before beginning chemotherapy or radiotherapy. Of the 190 patients, 11 (5.8%) were positive for antisperm antibody by GAT. On indirect IBT, 3 of the 11 GAT-positive patients were positive to IgG class only, with values of 22%, 24%, and 40%. Of the 11 GAT-positive patients, 4 showed no antibody bound to the sperm surface, and 3 were positive to IgG class only (28%, 21%, and 38%), with binding exclusively on the tail. Direct IBT could not be performed in the remaining 4 patients. Our data support the hypothesis that testicular cancer might not be a possible cause of antisperm autoimmunization and infertility.
    Fertility and sterility 03/2008; 91(2):414-9. · 3.97 Impact Factor
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    ABSTRACT: Endocrine factors represent an important and potentially treatable cause of sexual dysfunction. The availability of a correct endocrinological diagnosis allows correct identification of most cases of sexual dysfunction in which the endocrine apparatus is involved. Not only the most frequent causes of endocrine sexual dysfunction, such as hypogonadism and hyperprolactinaemia, but almost all extra-gonadal endocrinopathies (hyper-and hypothyroidism, hyper- and hypocortisolism, steroidal secreting tumours, etc.) may have importance to a greater or lesser extent in sexual function. It is, therefore, necessary that the diagnostic process for sexual dysfunctions of an endocrine nature be as integrated and wide as possible, especially as such pathologies are normally extremely responsive to medical or surgical therapy.
    International Journal of Andrology 01/2006; 28 Suppl 2:53-5. · 3.37 Impact Factor
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    ABSTRACT: Androgens play a pivotal role in the development of the male reproductive tract. The spermatogenesis requires high levels of intratesticular testosterone secreted by the Leydig cells. Testosterone exerts its action through the androgen receptor (AR), which is located both in the cytoplasm and in the nucleus of cells in the target tissue. Severe defects of the AR may result in abnormal male sexual development, while more subtle modifications can be a potential cause of male infertility. Low circulating levels of testosterone can be found in 20-30% of infertile men, but administration of testosterone or gonadotropins does not result in improved sperm production. Abuse of anabolic steroids is a frequent cause of male infertility, and substances such as endocrine disruptors can alter male fertility through an anti androgenic action.
    Journal of endocrinological investigation 02/2005; 28(3 Suppl):51-5. · 1.65 Impact Factor
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    ABSTRACT: To determine the efficacy of combined l-carnitine and l-acetyl-carnitine therapy in infertile males with oligo-astheno-teratozoospermia. Placebo-controlled double-blind randomized trial. University tertiary referral center. Sixty infertile patients (aged 20-40 years) with the following baseline sperm selection criteria: concentration, 10 to 40 x 10(6)/mL; forward motility, <15%; total motility, 10% to 40%; and atypical forms, <80%. Fifty-six patients completed the study. Patients were submitted to a combined treatment of l-carnitine (2 g/d) and l-acetyl-carnitine (1 g/d) or of placebo; the study design was 2 months' wash-out, 6 months of therapy or of placebo, and 2 months' follow-up. Variation in the semen parameters that were used for patient selection. Even though increases were seen in all sperm parameters after combined carnitine treatment, the most significant improvement in sperm motility (both forward and total) was present in patients who had lower initial absolute values of motile sperm (<4 x 10(6) forward or <5 x 10(6) total motile spermatozoa per ejaculate). Combined treatment with l-carnitine and l-acetyl-carnitine in a controlled study of efficacy was effective in increasing sperm motility, especially in groups with lower baseline levels.
    Fertility and Sterility 06/2004; 81(6):1578-84. · 4.17 Impact Factor