Vitamin D

Question 1

Vitamin D sources mnemonic

Live like a Butt. Make your pet Fish eat an Egg yolk.

Answer 1

Liver
Butter
Fish
Egg yolk

Question 2

What is the form of vitamin d we get from plants?

Answer 2

Ergocalciferol (Vitamin D2)

Question 3

What is the form of vitamin D our bodies can make using sunlight?

Answer 3

Cholecalciferol (Vitamin D3)

Question 4

The active form of Vitamin D in our body is?

Answer 4

1, 25-Dihydroxycholecalciferol
OR
1, 25-DiOH D3

Question 5

The precursor of Vitamin D3 is called?

Answer 5

7-hydroxycholesterol

Question 6

The precursor of vitamin D2

Answer 6

Ergosterol

Question 7

The enzyme found in liver for the synthesis of vitamin D3 is called?

Answer 7

25-Hydroxylase

Question 8

The enzyme found in the kidney for the synthesis of Vitamin D3 is called?

Answer 8

1-hydroxylase

Question 9

A 53-year old male patient, with history diabetes mellitus, hypertension, non-dialysis chronic renal failure and smoking. He was admitted to hospital in September 2011 to investigate worsening of the renal function, pruritus, muscle weakness, lack of appetite and weight lost. What is your diagnosis?
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4891171/

Answer 9

Vitamin D toxicity

Question 10

What mineral increases in vitamin D toxicity

Answer 10

Calcium

Question 11

Parathyroid hormone is released due to?

Answer 11

Hypocalcemia

Question 12

PTH increases the excretion of which molecule?

Answer 12

Phosphate (PO4-3)

Question 13

What parts of our bodies are affected by PTH

Answer 13

Kidney and Bones

Question 14

Effect of PTH on our bones?

Answer 14

Increases calcium resorption

Question 15

Effect of PTH on our kidneys?

Answer 15

It increases the 1, 25 DiOH-D3 formation
It increases the absorption of calcium.
It increases the excretion of phosphate

Question 16

Hypocalcemia and hyperphosphatemia is a sign of what disease?

Answer 16

Renal Osteodystrophy

Question 17

Lack of PTH can cause?

Answer 17

Hypocalcemia and hyperphosphatemia

Question 18

How is the production of calbindin increased?

Answer 18

Calcitriol binds to a receptor on the intestinal cell membrane and the complex increases the expression of calbindin.

Question 19

what does calbindin do?

Answer 19

It increases the absorption of calcium from the intestine.

Question 20

What are the levels of ALP if Vitamin C levels are low?

Answer 20

Low levels of ALP