Sponsored Links
Results 1 to 2 of 2
  1. #1
    Unregistered Guest

    Question B6/B12 Deficiency & Methylmalonate levels

    Advertisements
    Our members don't see this ad
    I had the following notes written on the margins of my Kaplan Biochemistry:

    In B6 Deficiency: you will have increased homocysteine, increased methionine and increased methylmalonate levels

    In B12 Deficiency: you will have increased homocysteine, decreased methionine and decreased methylmalonate levels

    I was reviewing it now and I understand the reason for the homocysteine and methionine levels in both deficiencies but I don't seem to understand why there is an increase in methylmalonate levels in B6 def. and a decrease in B12 def. (I thought it would be the opposite in both deficiencies)

    Can anybody explain why this is so....or did I just make a mistake in my notes?
    Thanks.

  2. #2
    sarab is offline Junior Member 510 points
    Join Date
    Jan 2006
    Posts
    21
    Downloads
    37
    Uploads
    0
    IN B6 defficiency no decease in methymalonate as propionyl coa is present. in b12 it increase

Similar Threads

  1. vitamin deficiency
    By BioPatel in forum Biochemistry And Genetics
    Replies: 9
    Last Post: 07-30-2007, 08:37 PM
  2. Fumarase deficiency?!
    By AmericanIMG in forum The Relaxing Lounge
    Replies: 2
    Last Post: 06-14-2007, 06:36 PM
  3. iron deficiency
    By DR.FATIN in forum USMLE Step 2 CK Forum
    Replies: 1
    Last Post: 04-08-2007, 12:02 AM
  4. enzyme deficiency
    By BioPatel in forum Biochemistry And Genetics
    Replies: 2
    Last Post: 12-04-2004, 06:56 PM
  5. What are the 4 Ds of niacin deficiency?
    By Anonymous in forum USMLE Step 1 Forum
    Replies: 3
    Last Post: 06-09-2003, 06:20 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Site Meter