Buzzwords Phase 0 Part 3 Flashcards
Most common vitamin deficiency worldwide
Vitamin A deficiency
Earliest sign of vitamin A def
Loss of sensitivity to green light
Vitamin D can be used to prevent infections cuased by
M tb
Vitamin D has antiproliferative effects vs
Colon CA
Breast CA
Prostate CA
Faeftures of scurvy
Swollen gums
Bleeding diathesis
Poor wound healing
Corkscrew hair
Wenicke encephalopathy
Ataxia
Confusion
Ophthalmoplegia
Korsakoff
Personality changes
Amnesia
Confabulation
Hallucination
Damaged structures in wenicke-korsakoff syndrome
Mammillary bodies
Medial dorsal nucleus of thalamus
B2 def
Cheilosis
Corneal vascularization
Tryptophan and niacin
1mg niacin = 60mg tryptophan
Effect of niacin on lipid profile
Dec VLDL
Inc HDL
Niacin defficiency dermatitis
Casal necklace (C3/C4)
Conditions increasing risk of B3 def
Hartnup dse
Isoniazid use
Carcinoid syndrome
Corn-based diet
B3 toxicity
Facial flusing
Livertoxicity
Podagra
B5 deficiency
Gopalan’s burning feet syndrome
“Nutritional melalgia”
Only enz needing B6 which is not associated with amino acid metabolism
Glycogen phosphorylase
Site of B9 and B12 absorption
B9: jejunum
B12: ileum
B9 vs B12
B12: increased methymalonic acid
Salivary protein that binds to freed Vitamin B12 in the stomach
Haptocorrin
Transcobalamin I
Receptors that allow the endocytosis of B12-IF complex
Cubilin receptors of ileal enterocytes
Transport protein of vitamin B12 in circulation
Transcobalamin II
Site of iron absorption
Proximal duodenum
Ferroportin
Transfers iron across the basolateral membrane of enterocytes to the circulation
Triad of hemochromatosis
Bronzing
Cirrhosis
DM