Адреногенітальний синдром: молекулярні механізми розвитку
| Autor: | V.P. Pishak, M.O. Ryznychuk |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
medicine.medical_specialty Adrenal cortex Cholesterol side-chain cleavage enzyme Virilization 030209 endocrinology & metabolism Biology Androgen Excess medicine.disease 03 medical and health sciences 030104 developmental biology 0302 clinical medicine medicine.anatomical_structure Endocrinology Internal medicine Adrenogenital syndrome medicine medicine.symptom Dexamethasone medicine.drug Hormone Congenital disorder |
| Zdroj: | INTERNATIONAL JOURNAL OF ENDOCRINOLOGY (Ukraine). 13:195-202 |
| ISSN: | 2307-1427 2224-0721 |
| Popis: | On the long multistage pathway of biosynthesis of steroid hormones from cholesterol to cortisol, testosterone and estradiol, due to mutations in genes, there is the deficiency of steroidogenesis enzymes in the adrenal glands: cholesterol desmolase, 3β-hydroxysteroid dehydrogenase, 17α-hydroxylase, 21-hydroxylase, and enzymes of steroidogenesis in the testis: 17,20-desmolasis, 17β-hydroxystyrol dehydroreductase and others, as well as a complex of widespread congenital diseases of heterogeneous group with autosomal recessive type of inheritance — adrenogenital syndrome (AGS). Deficiency of any of these enzymes or transport proteins leads to partial or complete loss of their activity. Phenotypic manifestations of AGS are quite polymorphic: phenomenon of hypoadrenocorticism; violation of the nature and rates of sexual development; bilateral increasing of adrenal glands; hypercorticotropinemia sensitive to dexamethasone; oligo- or amenorrhea; anovulatory infertility, miscarriage in early pregnancy. Pathogenetic component of these signs is congenital disorder of steroidogenesis caused by 11β-hydroxylase deficiency and symptoms of androgen excess. In AGS, there are distinguished a phenotype and nonclassical forms of steroidogenesis enzyme deficiency. In most cases, both types of diseases occur in persons of both sexes with different course — from mild to severe forms of the disease. |
| Databáze: | OpenAIRE |
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