Vitamins Water Soluble Flashcards
Water soluble B vitamines
- significance?
Thiamin (B1) Riboflavin (B2) Niacin (B3) - E releasing vitamins - all are involved in glycolysis/krebs cycle
Where are these founds?
Thiamin
Riboflavin
Niacin
Thiamin: pork, legumes
Riboflavin: dairy, eggs, meats
Niacin: meat/poultry, tryptophan (precursor)
Types of Thiamin (B1) deficiency
Beriberi: nervous + cardiovascular system
- “Dry”
- “Wet”
- Wernicke-Korsakoff
Dry Beri beri sx
peripheral neuropathy, weakness + atrophy
Foot drop
Wet Beri Beri sx
edema, circulatory collapse, CHF
Wernicke-Korsakoff sx
confusion
OPHTHALMOPLEGIA
Ataxia
memory loss
Riboflavin (B2) deficiency findings
(due to low dairy, animal products)
Cheilosis (cracked lips) Angular stomatitis (lesions on side of lips)
Niacin (B3) deficiency who’s at risk
“Pellagra”
- Nutritional/dietary restriction
- cornmeal based diet
- Food faddism/restriction (rice diet)
- breastfed infant of deficient mother - Malabsorption syndrome
- Alcoholism
- Metabolic “shunting” –> increased 5’HT –> decreased Tryptophan
Pellagra 4 D’s
- Diarrhea
- Dermatitis
- “Casal’s necklace” - Dementia
- confusion, dizzy, hallucination - Death
*Niacin B3 def.
B complex vitamins
“hematopoietic”
Folate
VIt B12
Sources of folic acid
“foliage” deep green veggies
OJ
Whole grains
What type of vitamin def leads to macrocytic anemia (High MCV) + hypersegmented neutrophils?
Folate + VIt B12
Which VIt is necessary for the conversion of homocysteine –> methionine?
B12 (cobalamin)
- very intimately related to folate
- problem for vegans
Which vitamin has neurological disturbances
+ macrocytic anemia and hypersegmented neutrophils
VIt B12 Neuro disurbances: -depression, - paresthesias, - gait - disturbances, - burning tongue, - dizziness
Fxns of Vit C (Ascorbic acid)
- Reversible antioxidant, Vit E
- Reducing equivalents to enzymes
- Leukocyte fxn (increase WBC)
- Cosubstrate in hydroxylation
- collagen synth - Conversion of DA –> NE