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Doctoral Thesis
DOI
https://doi.org/10.11606/T.5.2008.tde-24032009-164930
Document
Author
Full name
Ricardo Maisse Suehiro
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2008
Supervisor
Committee
Silva, Clovis Artur Almeida da (President)
Borba Neto, Eduardo Ferreira
Costallat, Lilian Tereza Lavras
Latorre, Luiz Carlos
Laurindo, Ieda Maria Magalhães
Title in Portuguese
Avaliação da função das células de Sertoli testiculares em pacientes do sexo masculino com lúpus eritematoso sistêmico
Keywords in Portuguese
Células Sertoli
Espermatozóides
Homens
Hormônios
Inibinas
Lúpus eritematoso sistêmico
Abstract in Portuguese
Objetivo: Avaliar a função das células testiculares de Sertoli em homens com lúpus eritematoso sistêmico (LES). Métodos: Trinta e quatro pacientes consecutivos foram prospectivamente selecionados para avaliar a função das células testiculares de Sertoli pelos níveis séricos da inibina B. Características clínicas, tratamento, análises dos espermatozóides, avaliação urológica, ultrasonografia testicular, hormônios e anticorpos anti-espermatozóides foram avaliados. Resultados: Os pacientes foram subdivididos em dois grupos: níveis séricos reduzidos (Grupo 1, n=8) e níveis séricos normais (Grupo 2, n=26) de inibina B. As medianas da concentração média de espermatozóides (p=0,024), da contagem total de espermatozóides (p=0,023) e da contagem total de espermatozóides móveis (p=0,025) foram menores no Grupo 1. Os níveis de inibina B foram positivamente correlacionados com a concentração de espermatozóides (r=0,343) e contagem total de espermatozóides móveis (r=0,357), e negativamente correlacionados com FSH (r=0,699) e LH (r=0,397). A mediana de inibina B sérica foi menor nos pacientes com LES tratados com pulsoterapia com ciclofosfamida endovenosa (CICIV) comparada aos não tratados com este medicamento (p=0,031). Avaliação dos 26 pacientes com LES e níveis normais de inibina B e FSH revelou que a mediana da relação inibina B/FSH foi menor nos pacientes lúpicos com oligozoospermia comparada aos pacientes com normozoospermia (p=0,004). Esta relação também foi menor nos pacientes com LES tratados com CICIV do que naqueles sem esta terapia (p=0,04). Conclusão: Este é o primeiro estudo que identificou uma alta freqüência de disfunção das células testiculares de Sertoli em homens com LES associada a anormalidades dos espermatozóides. Outros estudos prospectivos são necessários para determinar se os níveis séricos de inibina e a relação inibina B/FSH serão um marcador útil e precoce de toxicidade pela CICIV neste pacientes
Title in English
Testicular Sertoli cell function evaluation in male systemic lupus erytemathosus patients
Keywords in English
Hormones
Inhibins
Lupus erythematosus systemic
Men
Sertoli cells
Spermatozoa
Abstract in English
Objective: To assess the testicular Sertoli cell function in male SLE patients. Methods: 34 consecutive patients were prospectively selected to evaluate the testicular Sertoli cell function by serum inhibin B levels. Clinical features, treatment, semen analysis, urologic evaluation, testicular ultrasound, hormones, and antisperm antibodies were determined. Results: Patients were subdivided into two Groups: low serum inhibin B (Group 1, n=8) and normal levels (Group 2, n=26). The medians of sperm concentration (p=0.024), total sperm count (p=0.023) and total motile sperm count (p=0.025) were lower in Group 1. Inhibin B levels were positively correlated with sperm concentration (r=0.343), total motile sperm count (r=0.357), and negatively correlated with FSH (r=0.699) and LH (r=0.397). The median serum inhibin B was lower in SLE patients treated with intravenous cyclophosphamide pulsetherapy (IVCYC) compared to those without this therapy (p=0.031). Further evaluation of the 26 SLE patients with normal inhibin B and FSH levels revealed that medians of inhibin B/FSH ratio were lower in SLE patients with oligozoospermia compared to normozoospermia (p=0.004). This ratio was also lower in SLE patients treated with IVCYC than those without this therapy (p=0.04). Conclusions: This is the first study to identify a high frequency of testicular Sertoli cell dysfunction in male SLE associated with sperm abnormalities. Further prospective studies are necessary to determine if inhibin levels and inhibin B/FSH ratio will be an earlier and useful marker of IVCYC toxicity in these patients
 
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Publishing Date
2009-03-27
 
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