Tagged: Oral contraceptives

trial 4 0

Answer- Case study- Oral contraceptives induced vitamin deficiencies

Case Details Oral contraceptives are known to lower blood levels of folate and vitamin B6. Which of the following conversion processes might be directly affected? A. Ornithine to Citrulline B. Histidine to histamine C. Glutamate to Glutamine D. Propionyl co A to Methyl malonyl co A E. Phenyl alanine to Tyrosine Answer- B- The correct answer is conversion of Histidine to histamine. The reaction is catalyzed by decarboxylase that requires B6-P as a cofactor (Figure-1) that gets deficient in women upon long-term oral contraceptive usage. Folic acid is not required in this reaction. Figure-1- Decarboxylation of Histidine is carried out...

trial 4 1

Case- Oral contraceptive induced Vitamin deficiencies

Question of the day Oral contraceptives are known to lower blood levels of folate and vitamin B6. Figure- Oral contraceptives Which of the following conversion processes might be directly affected ? A. Ornithine to Citrulline B. Histidine to histamine C. Glutamate to Glutamine D. Propionyl co A to Methyl malonyl co A E. Phenyl alanine to Tyrosine For answer follow the link http://usmle.biochemistryformedics.com/answer-case-study-oral-contraceptives-induced-vitamin-deficiencies/ Please help Biochemistry for Medics by “CLICKING ON THE ADVERTISEMENTS” every time you visit us. Thank you!

Copy Protected by Chetan's WP-Copyprotect.