Artículo

Dain, L.B.; Buzzalino, N.D.; Oneto, A.; Belli, S.; Stivel, M.; Pasqualini, T.; Minutolo, C.; Charreau, E.H.; Alba, L.G. "Classical and nonclassical 21-hydroxylase deficiency: A molecular study of Argentine patients" (2002) Clinical Endocrinology. 56(2):239-245
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Abstract:

OBJECTIVE: To characterize the molecular basis of the 21-hydroxylase deficiency in a group of Argentine patients presenting the classical and nonclassical forms of the disease. DESIGN: To analyse the frequency of point mutations in the CYP21 gene by DNA amplification and mutation detection. PATIENTS: Forty-one patients from 36 nonrelated families: 25 nonclassical (NC), 11 salt-wasting (SW) and five simple virilising (SV). A total of 27 parents and 13 nonaffected siblings were also analysed. MEASUREMENTS: Basal steroid hormones and 17-hydroxyprogesterone levels following adrenal stimulation with adrenocorticotrophic hormone were measured, together with an analysis of 10 point mutations in the CYP21 gene. RESULTS: A total of 83% and 74.4% classical and non-classical chromosomes, respectively, were characterized. The intron 2 mutation was the most prevalent among classical alleles. In addition, a high frequency for R356W was observed in both groups (13.3 and 6.9%, respectively), while V281L was the most frequent mutation among the nonclassical patients with a frequency of 39.5%. No alleles containing P30L were observed, and onede novo mutation (R356W) was found. A total of 68.3% patients were fully genotyped, and all but one showed no genotype/phenotype discrepancy. Though the cut-off value for post-ACTH 17-hydroxyprogesterone stimulation was 30.25 nmol/l (10.00 μg/l), the lowest value observed in the fully genotyped nonclassical group was 42.35 nmol/l (14.00 μg/l). CONCLUSIONS: The high number of unidentified alleles in the nonclassical group suggests that less frequent mutations, or the presence of new ones, might be the cause of the disease in the Argentine population. Alternatively, the cut-off value in the ACTH-stimulated 17-hydroxyprogesterone test might overestimate the diagnosis of the nonclassical form by including some patients with heterozygous status.

Registro:

Documento: Artículo
Título:Classical and nonclassical 21-hydroxylase deficiency: A molecular study of Argentine patients
Autor:Dain, L.B.; Buzzalino, N.D.; Oneto, A.; Belli, S.; Stivel, M.; Pasqualini, T.; Minutolo, C.; Charreau, E.H.; Alba, L.G.
Filiación:Centro Nacional de Genética Médica, Argentina
División de Endocrinología Hospital Durand, Universidad de Buenos Aires, Argentina
Servicio de Pediatría Hospital Italiano, Universidad de Buenos Aires, Argentina
Instituto de Biología y Medicina Experimental, Universidad de Buenos Aires, Argentina
Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
Centro Nacional de Genética Médica, Avda. Las Heras 2670, (1425) Buenos Aires, Argentina
Palabras clave:corticotropin; hydroxyprogesterone; steroid 21 monooxygenase; steroid hormone; adrenal gland; allele; Argentina; article; chromosome analysis; clinical article; congenital adrenal hyperplasia; controlled study; enzyme deficiency; female; gene; gene amplification; gene frequency; genotype phenotype correlation; heterozygote; hormone determination; human; intron; male; mutation rate; parent; point mutation; prevalence; priority journal; salt losing nephritis; sibling; virilization; 17-alpha-Hydroxyprogesterone; Adrenal Hyperplasia, Congenital; Adrenocorticotropic Hormone; Alleles; Argentina; Female; Genotype; Heterozygote; Homozygote; Humans; Male; Point Mutation; Steroid 21-Hydroxylase
Año:2002
Volumen:56
Número:2
Página de inicio:239
Página de fin:245
DOI: http://dx.doi.org/10.1046/j.0300-0664.2001.01419.x
Título revista:Clinical Endocrinology
Título revista abreviado:Clin. Endocrinol.
ISSN:03000664
CODEN:CLENA
CAS:17-alpha-Hydroxyprogesterone, 68-96-2; Adrenocorticotropic Hormone, 9002-60-2; Steroid 21-Hydroxylase, EC 1.14.99.10
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03000664_v56_n2_p239_Dain

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Citas:

---------- APA ----------
Dain, L.B., Buzzalino, N.D., Oneto, A., Belli, S., Stivel, M., Pasqualini, T., Minutolo, C.,..., Alba, L.G. (2002) . Classical and nonclassical 21-hydroxylase deficiency: A molecular study of Argentine patients. Clinical Endocrinology, 56(2), 239-245.
http://dx.doi.org/10.1046/j.0300-0664.2001.01419.x
---------- CHICAGO ----------
Dain, L.B., Buzzalino, N.D., Oneto, A., Belli, S., Stivel, M., Pasqualini, T., et al. "Classical and nonclassical 21-hydroxylase deficiency: A molecular study of Argentine patients" . Clinical Endocrinology 56, no. 2 (2002) : 239-245.
http://dx.doi.org/10.1046/j.0300-0664.2001.01419.x
---------- MLA ----------
Dain, L.B., Buzzalino, N.D., Oneto, A., Belli, S., Stivel, M., Pasqualini, T., et al. "Classical and nonclassical 21-hydroxylase deficiency: A molecular study of Argentine patients" . Clinical Endocrinology, vol. 56, no. 2, 2002, pp. 239-245.
http://dx.doi.org/10.1046/j.0300-0664.2001.01419.x
---------- VANCOUVER ----------
Dain, L.B., Buzzalino, N.D., Oneto, A., Belli, S., Stivel, M., Pasqualini, T., et al. Classical and nonclassical 21-hydroxylase deficiency: A molecular study of Argentine patients. Clin. Endocrinol. 2002;56(2):239-245.
http://dx.doi.org/10.1046/j.0300-0664.2001.01419.x