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Prevalence of Y chromosome deletions in a Brazilian population of nonobstructive azoospermic and severely oligozoospermic men BJMBR
SãoPedro,S.L.; Fraietta,R.; Spaine,D.; Porto,C.S.; Srougi,M.; Cedenho,A.P.; Avellar,M.C.W..
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 efficiently in samples from 12 fertile men tested, but failed to be amplified in samples from fertile women, indicating the specificity of PCR conditions for Yq screening. Overall, 4 of the 60 infertile patients tested (6.7%) exhibited deletion of the Y chromosome, 2 of them being severely oligozoospermic patients (P10 and P32) and 2 azoospermic men (patients P47 and P57). Patients P47 and P57 presented...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Y chromosome; Microdeletions; Severe oligozoospermia; Azoospermia; Male infertility; Azoospermia factor; AZF region.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000600015
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Analysis of p53 expression and proliferative assessment using PCNA in localized prostate carcinoma BJMBR
Leite,K.R.M.; Srougi,M.; Nesralhah,L.J.; Camara-Lopes,L.H..
The surgical specimens from 51 men submitted to radical prostatectomy for localized prostate cancer were examined by immunohistochemistry using proliferation cell nuclear antigen (PCNA) monoclonal antibody to evaluate the proliferative index (PI). The relationship between PI, biological variables and p53 protein expression was evaluated by immunohistochemistry. PI was low in invasive localized prostate carcinoma (mean, 12.4%) and the incidence of PCNA-positive cells was significantly higher in tumors with p53 expression (P = 0.0226). There was no statistical difference in PCNA values when biological parameters such as Gleason score, tumor volume, extraprostatic involvement, seminal vesicle infiltration or lymph node metastasis were considered. We conclude...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Prostate carcinoma; P53; Proliferating cell nuclear antigen; PCNA.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000300006
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