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Biochemistry

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Vitamins, Harmones and Hemoglobin

Question
27 out of 30
 

Vitamin A intoxication causes injury to(AIIMS May 2007)



A Lysosomes

B Mitochondria

C Endoplasmic reticulum

D Microtubules

Ans. A Lysosomes

Excess of vitamin A can lead to rupture of lysosomal membranes.

Clinical manifestations of hypervitaminosis:

a. Headache Vomiting

b. Dizziness

c. There are signs of raised intra-cranial tension including bulging of anterior fontanelle and / or papilledema-a syndrome known as pseudotumor cerebri.

d. Chronic toxication with large doses results in anorexia, dry itchy skin, weight loss, painful extremities, sparse hair, hepatosplenomegaly,

e. hypoplastic anemia and benign intracranial hypertension.

f. Also note: Carotenoids donot cause toxicity, except a reversible yellow colour of the skin.

Vitamins, Harmones and Hemoglobin Flashcard List

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