Vitamins and Minerals Flashcards
Retinol
Vitamin A
Uses of Vitamin A
- Component of the visual pigment in rods and cones
- Essential in bone formation
- Prevent keratinizations of taste buds
- Promote spermatogenesis
- Prevent fetal resorption
- Promote proper differentiation of epithelial cells
- Mucus secretion
Deficiency of Vitamin A
Nightblindness, Xerophthalmia, Acne, Psoriasis, Darier’s Disease
Excess Vitamin A
Hypervitaminosis A
What is Nightblindness?
Difficulty in seeing under dim lighting
What is Xerophthalmia?
Blindness due to the formation of opaque scar tissue
Sign of Darier’s Disease
Dry, pruritic skin
Signs and symptoms of Hypervitaminosis A
Liver cirrhosis, mimicked symptoms of brain tumor
May cause congenital malformations in the developing fetus
Vitamin B1
Thiamine
Uses of Vitamin B1
- Decarboxylation of alpha-keto acids
- Decarboxylation of pyruvate
- Metabolism of most cells
- Important for nervous tissue
Deficiency of Vitamin B1
Beri-beri
Wernicke-Korsakoff Syndrome
SIgns and symptoms of Beri-beri in infants
Tachycardia
Vomiting
Convulsions
Death
Signs and symptoms of Beri-beri in adults
Dry skin
Irritability
Disorderly thinking
Progressive paralysis
Signs and symptoms of Wernicke-Korsakoff syndrome
Apathy
Loss of memory
Rhythmical to-and-from motion of the eyeballs
Vitamin B2
Riboflavin
Vitamin G
Uses of Vitamin B2
- Energy metabolism
- Prosthetic group of a number of enzyme systems involved in oxidation of carbs and amino acids
- FMN or FAD
Deficiency of Vitamin B2
not associated with any major human disease
frequently accompanies other vitamin deficiencies (dermatitis, cheiliosis, glossitis, eye irritation)
Vitamin B3
Niacin
Uses of Vitamin B3
- NAD/NADP
- Coenzyme in redox reactions
- Inhibits cholesterol production
- Assists in triglyceride breakdown
Deficiency of Vitamin B3
Pellagra
Signs and symptoms of Pellagra
Dermatits
Diarrhea
Dementia
Vitamin B6
Pyridoxine
Uses of Vitamin B6
- Important for normal brain and nerve function
- Help in protein degradation
- Help in making blood cells
Vitamin B12
Cyanocobalamin
Uses of Vitamin B12
- Maintains healthy nerve cells and blood celss
- Needed to make genetic material
- Prevents pernicious anemia
Deficiency of Vitamin B12
Pernicious Anemia
Signs and symptoms of Pernicious Anemia
Rapid heart rate, Shortness of breath, Fatigue Positive Babinski's reflex Loss of deep tendon reflexes Personality changes Megaloblastic madness
Vitamin C
Ascorbic Acid
Uses of Vitamin C
- Formation of Collagen and intercellular materials
- Promote wound healing
- Synthesis of carnitine and norepinephrine
- Aids in absorption of iron
- Strengthens immune system
- Treat scurvy
- Antioxidant
Deficiency of Vitamin C
Scurvy
Excess Vitamin C
Rebound Scurvy
Signs and symptoms of scurvy
Bleeding and spongy gums Easy bruising Hair and tooth loss Joint pain and swelling Fatigue
Signs and symptoms of rebound scurvy
increased oxidative stress
Vitamin B12 deficiency
Excess iron absoption
Vitamin D
Calcitriol
Uses of Vitamin D
- Stimulate bone recalcification and resorption
- Stimulate GI-absorption and renal-reabsorption of calcium
- Maintain calcium homeostasis
Deficiency of Vitamin D
Bone loss
Pathological bone fracture
Rickets
Osteomalacia
Signs and symptoms of Vit. D deficiency
Loss of muscle tone
Weakness
Vitamin D2
Ergocalciferol
Where is Vitamin D2 found?
Plants
Uses of Vitamin D2
- Stimulate GI-absorption of calcium and phosphorus
2. Maintain adequate plasma levels of calcium
Deficiency of Vitamin D2
Rickets
Signs and symptoms of Vit. D2 deficiency
soft, pliable bones due to continued collagen formation but incomplete mineralization
Vitamin D3
Cholecalciferol
Where is Vitamin D3 found?
Animal tissues
Uses of Vitamin D3
- Stimulates mobilization of calcium and phosphate from bone
- Builds and maintains teeth
- Helps in stimulation of gene expression or gene transcription
Deficiency of Vitamin D3
Osteomalacia in adults
Renal Rickets (renal osteodystrophy)
Hypoparathyroidism
Signs and symptoms of Osteomalacia
Demineralization of pre-existing bone
Signs and symptoms of Renal Rickets
hypocalcemia and hyperphosphatemia
Signs and symptoms of Hypoparathyroidism
Loss of apetite Nausea Thirst Stupor Hearing loss Deposition of calcium in organs (arteries and kidneys)
Vitamin E
Tocopherol
Uses of Vitamin E
- Antioxidant
- Prolongs life of RBCs
- Help make the best use of Vit. A
- Protects body membranes
- In females, proper reproductive function
Deficiency of Vitamin E
Peripheral neuropathy
Ataxia
Myopathy/Retinitis pigmentosa
Peripheral neuropathy
injury to the sensory nerves
Ataxia
impaired balance and coordination
Myopathy
A.K.A. Retinitis pigmentosa
muscle weakness
damage to the retina of the eye