Aminoacidophaties

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1
lacking of protein specifically enzymes that are responsible for metabolizing, converting, processing, transporting different types of amino acids
aminoacidophaties
2
an important protein that may be deficient in acidopathies, these are responsible for transporting amino acids which will cause increase level of amino acids
abnormal membrane transport
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defined acidopathy in 1909
garod
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excess production of phenylalanine
phenylketonuria
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phenlylalanine hydroxylase deficiency
phenlyketonuria
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responsible for converting phenylalanine to tyrosine
phenylalanine hydroxylase
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substancs formed when phenylalanine is not converted to tyrosine
also causes mental retardation
phenylpyruvate
phenylacetate
penyllactate
phenylacetyl-glutamine
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what substances are inhibited when there is high levels of phenylalanine
tryptophan
tyrosine
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causes albinism
lack of tyrosine enzyme
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a cofactor required for the enzymatic hydroxylation of the aromatic amino acids
tetrahydrobiopterin (BH4)
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diseases that is caused by phenlyketonuria
mental retardation
albinism
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normal level of phenylalanine
120 micromole per liter/ 2 mg per deciliter
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normal levels of phenylalanine for patients that do not have the enzyme responsible for phenylalanine conversion
1200 micromole per liter
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included in new born screening
phenylketonuria
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where is phelyketonuria found when tested
blood and urine
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manifestations of phenylketonuria in urine
must odor
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manifestations of phenylketonuria in pregnant women
delivers microcephalic babies
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manifestations phelyketonuria to individuals
mental retardation
failure to walk
failure to thrive
prone to seizures and tremors
iq level below 50
hypopigmentation
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management of phenylketonuria that increase activity of PAH enzyme if still present in body
saptopterin dihydrochloride (Kuvan)
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management of phenylketonuria that is used as a substitute to PAH enzyme and lowers phenylalanine levels
Pegvaliase-PQPZ (Palynziq®)
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direction of use of Pegvaliase-PQPZ (Palynziq®)
used once a day
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dietary management of phenylketonuria
dietary restrictions of food high in phenylalanine

Restriction to use of the artificial sweetener Aspartame since it contains phenylalanine

Dietary restriction of phenylalanine with tyrosine supplementation (since
phenylalanine is the precursor of tyrosine
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high levels of tyrosine
tyrosinemia
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if not used to produce proteins, melanins and other neurotransmitters what is tyrosine converted into?
fumarate and acetoacetate
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three types of tyrosinemia
type I
type II
type III
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enzyme lacking in tyrosinemia
fumarylacetoacetate hydrolase
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used to break down fumarylacetoacetate to fumarate
fumarylacetoacetate hydrolase
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manifestation of type I tyrosinemia
failure to thrive
diarrhea
vomiting
jaundice
cabbage like odor
distended abdomen
swelling of legs
increased predisposition for bleeding
liver cancer/ liver cirrhosis
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most severe form of tyrosinemia
type I
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management of type I tyrosinemia
nitisinone (Orfadin, Nitryr)
diet restriction in foods with tyrosine
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a tyrosine degredation inhibitor
nitisone
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missing enzyme in type II tyrosinemia
tyrosine amino transferase
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manifestations of type II tyrosinemia
mental retardation
excessive tearing
photophobia
red eye
eye pain
lesion in the sole and palm (palmo plantar hyperkeratosis)
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management of type II tyrosinemia
no specific drug that will substitute the enzyme
nly manage the sugns and symptoms
diet restriction on food high in phenylalanine and tyrosine
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missing enzyme in type III tyrosinemia that will convert phenylpyruvate to homogentisate
4 - hydroxyphenylpyruvate dioxygenase
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manifestation of type III tyrosinemia
mild mental retardation
seizures
periodic loss of balance and coordination
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management of type III tyrosinemia
no available treatment but diet is recommended
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there is an increase concentation of leucine, isoleucine, and valine due to lacking of the ketoacid enzyme
maple syrup urine disease
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ketoacid product of leucine
keto alpha-ketoisocaproic acid
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ketoacid product of isoleucine
alpha keto beta-methylbaleric acid
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ketoacid product of valine
keto alpha-ketovaleric acid
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manifestation of maple syrup urine disease
maple syrup or burnt sugar odor of urine, breath, skin
reddish color urine
vomiting
lack of appetite
failure to thrive
muscle rigidity
respiratory irregularities
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management for maple syrup urine disease
Vitamine B1 (Thiamine)
restriction diet
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black urine disease
block bone disease
alkaptonuria
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missing enzyme in alkaptonuria
homogentisate dioxygenase
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accumulation of alkaptone in eyes, nose, ears' connective tissue
orchonosis
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managemet of alkaptonuria
ascorbic acid
nitisinone
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high levels of cysteine
cystinuria
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lacking of SLC 3AI (responsible of transporting of cysteine)
cystinuria
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manifestations of cystinuria
UTI
hematuria
dysuria
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management of cystinuria
hydration
urinary alkalinizer (potassium citrate, acetozalamide)
chelating agent (pencillamine)
crystal growth inhibitors (l-cysteine, dimehtyl esters)
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