Musuq
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| Musuq
Forum Guru
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If you answer, explain, otherwise don't please.
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| study_ing
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A
we need to look for excess of a reduning sugar but the condition should be asymptomatic...basically when kaplan talks about disorders in fructose metabolism they mention this scenario so u can arrive at the answer..
in c and d ull atleast have cataracts ( for the former and a variety with d)
similar with e-->von gierke's disease
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| robin082006
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A for sure
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| young_doc
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Yea A.
Fructose is the only reducing sugar. And only a Fructokinase deficiency gives Fructosuria.
Straight out of First Aid. (That book is $$$$$$$$$$$$$)
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| young_doc
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ooops...my mistake...Fructose is NOT the only reducing sugar. But only Fructokinase and Galactokinase deficiency will give Fructosuria/Galactosuria.
And between the two, like study_ing said, Galactokinase deficiency would likely also give cataracts.
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| Musuq
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A) FK
Fructokinase def has no clinical manif. it generally presents as an accidental finding of a reducing substance in the urine that is not glucose. it is AR and no Rx is req. FK catalyzes the 1st step of dietary fructose metab by converting fructose to fructose-1-p
With a deficiency of the Ez, fructose levels increase in the blood but almost all of it is excreted in the urine b/c there is no renal threshold for fructose.
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| MRMAVERICK
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yup a
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