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Antisperm antibodies in prepubertal boys and their reactivity with antigenic determinants on differentiated spermatozoa. 1998

A Domagała, and M Kamieniczna, and D Kowalczyk, and M Kurpisz
Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland.

OBJECTIVE Antisperm antibodies induced in prepubertal boys with testicular failures were characterized by using four techniques of antibody detection. The reactivity of circulating antisperm antibodies in prepubertal boys and the reactivity of antibodies in sera samples of adult fertile and infertile males were compared against the same sperm antigenic pools (live or fixed spermatozoa, or sperm antigenic extracts). METHODS The incidence of antisperm antibodies in sera samples of 69 prepubertal boys with testicular failures and 21 samples obtained from adult, male individuals was assessed by indirect immunobead binding test (IDIBT), flow cytometry measurement, enzyme-linked immunosorbent assay, and Western blotting. Immunoblot analysis was performed by using sperm extracts of glycosylated and deglycosylated solubilized membrane antigens. RESULTS Sera samples were studied in a group composed of healthy prepubertal boys (n = 7) and prepubertal boys with testicular failures (n = 69). Applied tests of antibody detection revealed striking differences in a group of boys with testicular pathology. With IDIBT, 7% of the sera samples were found positive, whereas with flow cytometry measurement, 48% of the sera samples were positive. Immunosorbent assay (fixed sperm) indicated 32% positive cases in the same group. The sera samples were found to be positive in 65% of immunoblotting reactions with glycosylated antigens and in 70% of immunoblotting reactions with deglycosylated antigens. All applied detection assays were clearly negative on sera samples from fertile, adult males. Western immunoblotting indicated an immunodominant antigenic determinant of 58 kDa. CONCLUSIONS Tests of antibody detection with the use of live sperm (IDIBT and flow cytometry measurements) presented low sensitivity (8% and 48%, respectively) in a group of prepubertal boys. This observation underlines the difficulties in assigning the prospective prognosis of future fertility status in prepubertal boys with antisperm antibodies.

UI MeSH Term Description Entries
D008297 Male Males
D011627 Puberty A period in the human life in which the development of the hypothalamic-pituitary-gonadal system takes place and reaches full maturity. The onset of synchronized endocrine events in puberty lead to the capacity for reproduction (FERTILITY), development of secondary SEX CHARACTERISTICS, and other changes seen in ADOLESCENT DEVELOPMENT. Puberties
D002454 Cell Differentiation Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs. Differentiation, Cell,Cell Differentiations,Differentiations, Cell
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D006031 Glycosylation The synthetic chemistry reaction or enzymatic reaction of adding carbohydrate or glycosyl groups. GLYCOSYLTRANSFERASES carry out the enzymatic glycosylation reactions. The spontaneous, non-enzymatic attachment of reducing sugars to free amino groups in proteins, lipids, or nucleic acids is called GLYCATION (see MAILLARD REACTION). Protein Glycosylation,Glycosylation, Protein
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000906 Antibodies Immunoglobulin molecules having a specific amino acid sequence by virtue of which they interact only with the ANTIGEN (or a very similar shape) that induced their synthesis in cells of the lymphoid series (especially PLASMA CELLS).

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