A novel compound heterozygous mutation of the aromatase gene in an adult man: reinforced evidence on the relationship between congenital oestrogen deficiency, adiposity and the metabolic syndrome
| العنوان: | A novel compound heterozygous mutation of the aromatase gene in an adult man: reinforced evidence on the relationship between congenital oestrogen deficiency, adiposity and the metabolic syndrome |
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| المؤلفون: | Vincenzo Rochira, Colin Clyne, Bibiana Fabre, Lucia Zirilli, Maria Luisa Simone, Elisa Pignatti, Laura Maffei, Evan R. Simpson, Paula Antunez, Souheir Houssami, Claudio Aranda, Cesare Carani |
| المصدر: | Clinical Endocrinology. 67:218-224 |
| بيانات النشر: | Wiley, 2007. |
| سنة النشر: | 2007 |
| مصطلحات موضوعية: | Adult, Male, Heterozygote, medicine.medical_specialty, medicine.drug_class, Endocrinology, Diabetes and Metabolism, DNA Mutational Analysis, Biology, Compound heterozygosity, Exon, Aromatase, Endocrinology, Insulin resistance, insulin resistance, NAFLD, Internal medicine, Testis, Nonalcoholic fatty liver disease, medicine, Humans, Point Mutation, Testosterone, Adiposity, visceral adiposity, METABOLIC SYNDROME, Metabolic Syndrome, eunuchoid body proportions, OBESITY, Estrogens, Luteinizing Hormone, medicine.disease, Glucose, Liver, Estrogen, biology.protein, Follicle Stimulating Hormone, Metabolic syndrome, Aromatase deficiency |
| الوصف: | Background Descriptions of new cases of human aromatase deficiency are useful for a better understanding of male oestrogen pathophysiology, as some aspects remain controversial. Objective To present a new case of an adult man affected by aromatase deficiency, along with a description of clinical phenotype, and hormonal and genetic analysis. Design Case report study. Patient A 25-year-old man with continuing linear growth, eunuchoid body habitus and diffuse bone pain. Measurements Amplification and sequencing of all coding exons with their flanking intronic sequences of the CYP19A1 gene. Aromatase expression of the mutant human cDNAs was compared with wild type. Serum LH, FSH, testosterone, oestradiol, insulin, glucose, glycosylated haemoglobin (HbA1c), serum lipids and liver enzymes were measured. Histological analysis of liver and testis biopsies was performed. Results Two novel heterozygous compound inactivating mutations of the CYP19A1 gene were disclosed. The first mutation is at bp380 (T-->G) in exon IV and the second one at bp 1124 (G-->A) in exon IX. LH and testosterone were normal, FSH was slightly elevated, and serum oestradiol undetectable. The subject showed a metabolic syndrome characterized by abdominal obesity, hyperinsulinaemia, acanthosis nigricans and nonalcoholic fatty liver disease. Conclusions These novel mutations improve our knowledge on genetics of the CYP19A1 gene. This new case of aromatase deficiency sheds new light on the heterogeneity of mutations in the CYP19A1 gene causing loss of function of the aromatase enzyme. The evidence of metabolic syndrome and of obesity associated with congenital oestrogen deprivation emphasizes the role of oestrogens in fat accumulation and distribution in men, a role that has long been partially overlooked in these patients. |
| تدمد: | 1365-2265 0300-0664 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f71deb1f0536ee273ae103ed47c4f91Test https://doi.org/10.1111/j.1365-2265.2007.02864.xTest |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....3f71deb1f0536ee273ae103ed47c4f91 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 13652265 03000664 |
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