This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What part does methylmalonic acid play in the metabolism of B12? Why would the physician analyze for ... (Read 15 times)

torybrooks

  • Hero Member
  • *****
  • Posts: 500
on: Aug 2, 2018
What part does methylmalonic acid play in the metabolism of B12? Why would the physician analyze for this compound?

Question 2

Illustrate the pathway that converts homocysteine to cysteine or to methionine. Show the need for B6, B12, and folic acid.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jaaaaaaa

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Aug 2, 2018
Answer to Question 1

If serum B12 levels are measured, they do not reveal the amount of B12 on a tissue level. Serum B12 could be normal with a low tissue level. Methylmalonic, a metabolite in the B12 pathway is a more accurate indicator of B12 on the tissue level.

Answer to Question 2

This should be done in a schematic format and should include the pathways involving homocysteine conversion and illustrating where the B vitamins are involved. These pathways are available in basic biochemistry texts and most advanced nutrition texts.


torybrooks

  • Member
  • Posts: 500
Reply 2 on: Aug 2, 2018
Thanks for the timely response, appreciate it

Perkypinki

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Plant Cell Types (Part 3) Plant Cell Types (Part 3)
Breast surgery. Surgical removal of all or part of the breast is a treatment against the spread of b Breast surgery. Surgical removal of all or part of the breast is a treatment against the spread of b
Movement of a drug through the body (pharmacokinetics): absorption, distribution, metabolism, and ... Movement of a drug through the body (pharmacokinetics): absorption, distribution, metabolism, and ...
Biosynthesis of N-acetylneuraminic acid (sialic acid) from UDP-N-acetylglucosamine Biosynthesis of N-acetylneuraminic acid (sialic acid) from UDP-N-acetylglucosamine
A deficiency of linoleic acid can interfere with normal growth and result in inflammation A deficiency of linoleic acid can interfere with normal growth and result in inflammation
17th Century Physician Examining a Urine Specimen 17th Century Physician Examining a Urine Specimen
Video: Hemoglobin's affinity with oxygen - carbon dioxide, temperature and bisphosphoglycerate (BPG)

For a complete list of videos, visit our video library