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Author22 Posts
  #1

causes:.......

  #2

1. excessive cell break down like leukemia
2. Renal disorder
3. Lesch nyhan synd

  #3

pt on antineoplastics..,gout ,pt on thiazide ,loop diuretics .

  #4

high fructose diet
aldolase Bdef.
von gierke dis.
glucose 6 phosphate dehydrogenase def.

  #5

Is it G6PD or glucose 6 phospatase deficiency.
I think it is the later.Havent come across the former.

Could you clarify.

  #6

I apologize you mentioned the glucose 6 phosphatase already-(Von Gierke).

  #7

Would someone explain why G6PD-deficiency would give you hyperuricemia.

  #8

anti TB drugs= Ethambutol,pyrazanimide

  #9

hi colombia,are u sure of ethambutol having hyperuricemia as side effect.as far as i know,pyrazinamide causes hyperuricemia.ethambutol causes retrobulbar neuritis and red-green color blindness.do correct me if i am wrong.

  #10

Hi Anne! Ethambutol produces gout (Lippicott's p.335)

  #11

Please remember: hyperuricemia does not cause gout. Many people can be hyperuricemic and not have gout, and vice versa.

and anyone who can tell me why G6PD-deficiency causes gout gets a gold star.

  #12

you are activating pentose phosphate shunt and hence increase in PO4 .
PO4 ----->increased PRPP ----->Increases Purine synthesis

  #13

thanx columbia and all!!

  #14

This response comes a little late, but maybe it can help someone else.

G6PD is necessary in RBC's to produce NADPH which in turn is needed for antioxidant function in the cell. G6PD deficiency causes hemolysis, uric acid is released and can cause gout.

  #15

Would someone please shed some more light on how G6PD deficiency contributes towards Gout/Hyperuricemia? I fail to understand the point here.
My questions are

1. Is uric acid released from the RBCs?

2. Are there any precursors/intermediates of the purines in the RBCs that lead to uric acid production.

I'm sure some one will answer me.

Thanks

  #16

Doc of big apple--He didnt shed ANY light on uric acid./G6PD.
Unless hes saying: G6PD causing Hemolysis :arrow:
Hemolysis :arrow: excess purines from DNA structural disturbance
:arrow: uric acid from excess purine catabolism??????????????
Can anyone answer this????????

___________________
Smell the coffee! "Is That an Osler move??"

  #17

G6P deficiency → build up of G6P → stimulates 6MP shunt → more ribo 5P product → more substrate for nucleotide synthesis → more purines to break down → hyperuricemia

  #18

whtz 6MP shunt?




___________________
life is guud

  #19

sorry; hexose monophosphate shunt. so with G6Pase deficiency, you can't dephosphorylate your G6P to get it out out of the liver (for gluconeogenesis). so it takes the path of least resistance and goes to the hexose monophosphate shunt (it's the beginning substrate here).

  #20

hye buddy i get ur point ,in VONgierke's disease there will be hyperurecimia by the mech. u mentioned but also because of PO4-- trap and lactic acidosis which prevents uric acid excretion!

but as few ppl mentiond here abt G6PDH def. i don't understand how it will lead to hyperricemia!


___________________
life is guud

  #21

In the end: The most common cause of congenital hyperuricemia is HGPRT def. The most common cause of adult hyperuricemia is dehydration.

___________________
Smell the coffee! "Is That an Osler move??"

  #22

in G6phosphatedef. ,phophyraled sugars acumulate,decreasing the available Pi& increasing the AMP,LEADING TO HYPERURICEMIA.







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