Continuing Medical Education (CME) for Vitamin D includes genes and questions – July 2014

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Vitamin D’s Role in Health — Deterministic or Indeterminate? - 2014

URL
By Stephanie Dunne and Jenna A. Bell, PhD, RD
Today’s Dietitian Vol. 16 No. 7 P. 48

Gene	Enzyme	Location	Conversion
CYP27A1	Vitamin D-25-hydroxylase	Liver	Vitamin D2 or D3 à calcidiol [25(OH)D]
CYP2R1	Vitamin D-25-hydroxylase	Liver	Vitamin D2 or D3 à calcidiol [25(OH)D]
CYP27B1	25-hydroxyvitamin D -1alpha-hydroxylase	Kidney and other tissues	Activation: Calcidiol [25(OH)D] à calcitriol [1alpha,25(OH)2D]
CYP24A1	25-hydroxyvitamin D-24- hydroxylase	Kidney and other tissues	Inactivation: Calcitriol or calcidiol à 24,25(OH)2D or calcitroic acid

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10 multiple choice questions

1. Vitamin D is considered to be which of the following?

a. Vitamin
b. Hormone
c. Prohormone
d. Antioxidant

2. Which of the following genetic mutations can result in normal levels of
25-hydroxyvitamin D [25(OH)D] and low levels of 1alpha,25(OH)2D?

a. CYP27A1
b. CYP27B1
c. CYP2R1
d. CYP24A1

3. Vitamin D testing specifically is recommended for which of the following groups?

a. People with liver failure
b. People who live north of 45˚N latitude
c. All adults older than 65
d. Everyone

4. Which of the following is the active form of vitamin D in the body?

a. Calcitroic acid
b. Calcidiol
c. Calcitriol
d. 24,25(OH)2D

5. Beyond bone health, vitamin D seems to help maintain health in which of the following ways?

a. Maintaining kidney function
b. Supporting muscle growth
c. Promoting weight loss
d. Suppressing the autoimmune response

6. Which of the following foods has the highest content of vitamin D per serving?

a. Cod liver oil
b. Sun-dried mushrooms
c. Swordfish
d. Fortified skim milk

7. The sun is too low during the winter months to produce any vitamin D
in the skin above and below which north/south parallel?

a. 20˚
b. 33˚
c. 40˚
d. 52˚

8. Vitamin D is associated with bone health because it does which of the following?

a. Stimulates osteoblasts
b. Increases phosphorus excretion
c. Reduces parathyroid hormone release
d. Increases calcium absorption from the intestine

9. The Institute of Medicine identifies vitamin D deficiency
as serum calcidiol levels below which of the following levels?

a. 15 nmol/L
b. 20 nmol/L
c. 32 nmol/L
d. 50 nmol/L

10. Each serving of foods fortified with vitamin D contain approximately which of the following amounts?

a. 2.5 mcg (100 IU)
b. 25 mcg (1,000 IU)
c. 40 mcg (1,600 IU)
d. 100 mcg (4,000 IU)

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See also VitaminDWiki

• Vitamin D deficiency – Physicians Assistants Continued Medical Education Feb 2015
• Nurses continuing education – Vitamin D Overview $6
• Vitamin D – Continuing Medical Education – 2013
• Overview for Doctors category listing has 122 items includes some CME credit items

See also Web

• GrassrootsHealth Launches Free CME Courses about Vitamin D March 2015 1 hour videos
  • Vitamin D, Sunshine, Optimal Health: Putting it all Together
  • Public Health Initiative: Meeting the Vitamin D Requirements of the Pregnant Woman and Improving Health Outcomes

StatPearls good thru Dec 2023,up to 2,000 IU