Alkaptonuria
Definition
A rare hereditary disorder of aromatic amino acid metabolism (phenylalanine and tyrosine), inherited in an autosomal recessive pattern, caused by a deficiency of the homogentisate 1,2-dioxygenase enzyme. This congenital structural anomaly leads to the accumulation of homogentisic acid (alkapton) in the body, which is excreted in the urine (turning it black upon exposure to air) and deposits in connective tissues and cartilages, causing ochronosis and severe arthropathies in adulthood.
Bilingual Equivalents
- Alkaptonuria
- Alcaptonuria
Grammatical & Source Details
| Inflection Type | Feminine noun, regular structural variations for singular and plural forms. |
| Formation | Medical neologism combining the German/French chemical root 'alkapton' with the structural Greek-derived suffix '-uria' denoting urinary output. |
| Spelling / Pronunciation | [ælkæptəˈnjʊəriə] |
| Source | The Online Mendelian Inheritance in Man (OMIM) and Clinical Metabolic Manuals |
Contextual Usage Examples
RO: Un semn precoce de alcaptonurie la sugari este înnegrirea caracteristică a scutecelor lăsate în contact cu oxigenul.
EN: An early sign of alkaptonuria in infants is the characteristic darkening of diapers left in contact with oxygen.
RO: Pacientul diagnosticat cu alcaptonurie a dezvoltat dureri articulare cronice din cauza depunerii de pigment ocronotic.
EN: The patient diagnosed with alkaptonuria developed chronic joint pain due to the deposition of ochronotic pigment.
RO: Testele de laborator pentru alcaptonurie includ determinarea cantitativă a acidului homogentizic prin cromatografie.
EN: Laboratory tests for alkaptonuria include the quantitative determination of homogentisic acid by chromatography.
Idioms & Phrases
Diagnostic de alcaptonurie / Alkaptonuria diagnosis
RO: Procedură clinică și genetică de confirmare a bolii metabolice prin identificarea mutațiilor genei HGD.
EN: A clinical and genetic procedure to confirm the metabolic disease by identifying mutations in the HGD gene.
Artropatie din alcaptonurie / Alkaptonuric arthropathy
RO: Degenerare severă a cartilajelor coloanei vertebrale și ale marilor articulații, specifică evoluției bolii la adulți.
EN: Severe degeneration of spine and large joint cartilages, specific to the progression of the disease in adults.
Managementul alcaptonuriei / Alkaptonuria management
RO: Protocol terapeutic interdisciplinar axat pe restricții dietetice de tirozină și monitorizarea simptomelor degenerative.
EN: An interdisciplinary therapeutic protocol focused on tyrosine dietary restrictions and monitoring degenerative symptoms.
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