title: [Serum concentration of calcium and calcitonin in hyperthyroidism caused by Graves' disease].
abstract: Serum calcium and calcitonin were determined in 13 patients (12 women and 1 man), ages ranging from 30 to 40 years, with clinical diagnosis of hyperthyroidism due to Graves' Disease, confirmed by serum determinations of T3 and T4, with the purpose of establishing the relationship that these two substances may have in this pathology. The results obtained showed a decrease in seric calcium concentration in relation to a control group (10.02 +/-) 0.48 vs 11.49 +/- 0.28 mg/dl; p less than 0.005) and an increase in calcitonin concentration (193.6 +/- 8.62 vs 116.7 +/- 7.61 pg/ml; p less than 0.0001). We also found a significative negative association (r = -0.69; p less than 0.01) between these two compounds in the group of patients with hyperthyroidism, not being found in the control group.
authors.affiliation: Instituto de Investigaciones Clínicas, Facultad de Medicina, Universidad del Zulia, Maracaibo, Venezuela.
authors.forename: H
authors.initials: H
authors.lastname: Fereira-Valbuena
authors.forename: E
authors.initials: E
authors.lastname: Fernández de Argüello
authors.forename: G
authors.initials: G
authors.lastname: Campos
authors.forename: E
authors.initials: E
authors.lastname: Ryder
authors.forename: A
authors.initials: A
authors.lastname: Avellaneda
mesh_terms: D000328:Adult; D002116:Calcitonin / Q000097:blood*; D002118:Calcium / Q000097:blood*; D005260:Female; D006111:Graves Disease / Q000097:blood* / Q000150:complications; D006801:Humans; D006980:Hyperthyroidism / Q000097:blood* / Q000209:etiology; D006996:Hypocalcemia / Q000209:etiology; D008297:Male
chemical_list: D002116:Calcitonin; D002118:Calcium
vernacular_title: Concentraciones séricas de calcio y calcitonina en hipertiroidismo por enfermedad de Graves.