D1_L2 Pt 3: Water Soluble Vitamins 2 Flashcards
______ competes with pyridoxine for enzymes
Isoniazid
Think (B)ISONiazid and OX compete for plant foods
Pyridoxine toxicity is _____
Irreversible
Deficiency symptoms of pyridoxine
Think GRASP
Glossitis (inflamed tongue)
Rashes
Anemia
Seizures
Peripheral neuropathy
Sources of pyridoxine
Think While traveling by OX you see YuCCA plants
Yeast
u
Cereals
Corn
Animal Sources
Primary functions of biotin (4)
Energy production
Nutrient metabolism
A co-enzyme in rxns including AA metabolism, fatty acid synthesis, & converting pyruvate to oxaloacetate
Involved in gene expression
Biotin is formed by _____ _____
_____ binds biotin, causing it to be ______
Intestinal bacteria
Avidin
Inactivated
Think IN - biotIN is INactivated by avidIN
Deficiency symptoms of biotin
Think in bio lab we measure in GRAMs
Glossitis
Rashes
Alopecia
Muscle damage
s
Sources of biotin
Think KYLE is my bio lab partner
Kidney
Yeast
Liver
Egg yolk
Functions of folate
Acts as a coenzyme in DNA synthesis
RBC formation
Decreases neural tube defects
Folate is synthesized from ______
Folate is ___-dependent because _____
PABA
Zinc
Zinc makes folate absorbable
Folate deficiency symptoms
Think folate/football STADIUm
Shortness of breath
Tiredness
Anemia (megaloblastic, marocytic)
Diarrhea
Irritability
Ulcers
m
Sources of folate
Think folate BLoCKs neural tube defects
Beans
Leafy greens/lentils/liver
o
Cereal/citrus fruits
Kidney
s
Functions of cyanocobalamin
A coenzyme in synthesizing proteins (homocysteine to methionine)
RBC production
Maintains nerve fiber sheaths
Steps of cyanocobalamin absorption
HCL & pepsin unbind B12 from foods
Free B12 binds with intrinsic factor (IF)
B12 & IF travel to small intestine for absorption
Deficiency symptoms of cyanocobalamin
Megaloblastic (large RBC), macrocytic (large RBC), & pernicious anemia (autoimmune)
Sources of cyanocobalamin
Think FLAME
Fish
Liver
Animal sources
Meat/milk
Eggs
Functions of ascorbic acid (vitamin C)
Antioxidant
Forms collagen
Makes iron more absorbable
Bone health
Wound healing
Blood vessels
Which vitamin is the most easily destroyed and why?
Ascorbic acid/vitamin C
It is susceptible to conditions that are too alkaline, hot, or oxidized
Requires acidic pH
Deficiency symptoms of ascorbic acid (vitamin C)
Bleeding gum
Petechiae
Scurvy
Compromised wound healing
Iron-deficiency anemia
Sources of ascorbic acid (vitamin C)
Think Cool Dietitians Probably Party Year-round
Citrus fruits
Dark green veggies
Papaya
Potatoes
Yellow veggies
