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Phenylketonuria was discovered by the Norwegian physician Ivar Asbjørn Følling in 1934 [63] when he noticed hyperphenylalaninemia (HPA) was associated with intellectual disability. In Norway, this disorder is known as Følling's disease, named after its discoverer. [ 64 ]
Asbjørn Følling, a physician studying metabolic diseases, identified an excess of phenylpyruvate as the cause of a strange, musty odor from the urine of two Norwegian children. [13] Further research by Penrose in 1935 lead to the coining of the term, "phenylketonuria". The foundations for dietary restrictions were laid down by George Jervis ...
Maple syrup urine disease can be classified by its pattern of signs and symptoms or by its genetic cause. The most common and severe form of this disease is the classic type, which appears soon after birth, and as long as it remains untreated, gives rise to progressive and unremitting symptoms.
Some inborn errors of metabolism cause characteristic odors, such as maple syrup urine disease (which takes its name from the urine scent) and phenylketonuria (which causes a "mousey" smell). [37] Odor is rarely reported during urinalysis. [38]
Smell events are often sporadic and episodic in nature (based on diet over the previous 24 hours), making it often difficult to diagnose by smell alone. Some people with trimethylaminuria report having a strong odor all the time, but there has not been any evidence apart from self reported symptoms that this is the case. [citation needed]
Phenylacetic acid is used in some perfumes, as it possesses a honey-like odor even in low concentrations. It is also used in penicillin G production and diclofenac production. It is also employed to treat type II hyperammonemia to help reduce the amounts of ammonia in a patient's bloodstream by forming phenylacetyl-CoA, which then reacts with ...
Change in urine color, odor, or frequency. You Might Also Like. The Best Hair Growth Shampoos for Men to Buy Now. 25 Vegetables That Are Surprising Sources of Protein. Show comments.
Følling obtained urine samples from the children and, after many tests, found that the substance causing the odor in the urine was phenylpyruvic acid. The children, he concluded, had excess phenylpyruvic acid in the urine, the condition which came to be called phenylketonuria (PKU).