Stephanie Shared "GI Biochemistry" - 23 Picmonics
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GI Biochemistry
Vitamin B1 (Thiamine)
- Mechanism
- Branched-chain Ketoacid Dehydrogenase
- Pyruvate Dehydrogenase
- Alpha-ketoglutarate Dehydrogenase
- Transketolase
- DEFICIENCY EFFECTS
- Wernicke-Korsakoff Syndrome
- Beriberi
- ATP Depletion
- Aerobic Tissues Like Brain and Heart Affected First
- Considerations
- Deficiency Can Worsen with Glucose Infusion
2 mins
Beriberi (Thiamine Deficiency)
- Thiamine Deficiency
- Dry Beriberi
- Polyneuritis
- Muscle Wasting
- Wet Beriberi
- Dilated Cardiomyopathy
- Edema
51 secs
Wernicke-Korsakoff Syndrome
- Thiamine deficiency
- Confusion
- Ophthalmoplegia
- Ataxia
- Korsakoff
- Confabulation
- Personality Changes
- Memory loss
- Alcoholics
- Damage to medial dorsal nucleus
- Damage to mammillary bodies
2 mins
Riboflavin (Vitamin B2)
- Classification
- Vitamin B2
- Biochemistry
- FAD
- FAD Makes 1.5 ATP
- Succinate to Fumarate
- DEFICIENCY
- Glossitis
- Cheilosis
- Corneal Vascularization
2 mins
Vitamin B3 (Niacin)
- Derived from Tryptophan
- Synthesis Requires Vitamin B6
- Constituent of NAD+
- Deficiency Causes
- Hartnup Disease
- Carcinoid Syndrome
- Deficiency Symptoms
- Pellagra
- Diarrhea
- Dermatitis
- Dementia
- Glossitis
- Excess Symptoms
- Flushing
2 mins
Vitamin B6 (Pyridoxine)
- Pyridoxal Phosphate
- Mechanism
- Transamination
- Decarboxylation
- Glycogen Phosphorylase
- Cystathionine Synthase
- Functions
- Heme Synthesis
- Niacin Synthesis
- Neurotransmitter Synthesis
2 mins
Vitamin B5 (Pantothenate)
- Mechanism
- Pantothenate
- Pyruvate Dehydrogenase
- Coenzyme A
- Fatty Acid Synthase
- Deficiency Signs and Symptoms
- Enteritis
- Dermatitis
- Alopecia
- Adrenal Insufficiency
2 mins
Biotin (Vitamin B7)
- Mechanism
- Carboxylation Reaction
- Pyruvate Carboxylation to Oxaloacetate
- Propionyl-CoA Carboxylation to Methylmalonyl-CoA
- Acetyl-CoA Carboxylation to Malonyl CoA
- Deficiency Causes
- Antibiotic Use
- Ingestion of Raw Eggs
- Signs & Symptoms
- Alopecia
- Dermatitis
- Enteritis
2 mins
Folate Deficiency
- Clinical Features
- Macrocytic Anemia
- Megaloblastic Anemia
- Etiologies
- Malabsorption
- Dietary
- Tea and Toast
- Alcoholics
- Medication-induced
- Methotrexate
- Trimethoprim
- Increased Requirement
- Hemolytic Anemia
- Pregnancy
2 mins
Vitamin B12 (Cobalamin) Deficiency Causes
- Causes
- Vegans
- Pernicious Anemia
- Gastric Bypass Surgery
- Malabsorption
- Sprue
- Enteritis
- Crohn's Disease
- Diphyllobothrium latum
4 mins
Vitamin B12 (Cobalamin) Mechanism and Deficiency
- Mechanism
- Cobalamin
- Large reserve pool in the liver
- Homocysteine to methionine
- Methylmalonyl CoA to succinyl CoA
- Deficiency Signs and Symptoms
- Macrocytic Megaloblastic Anemia
- Hypersegmented Neutrophils
- Neurologic defects
- Posterior column
- Lateral corticospinal tract
- Spinocerebellar tract
5 mins
Cholecalciferol (Vitamin D3)
- Mechanism
- Vitamin D3
- Indications
- Dietary Supplement
- Vitamin D Deficiency
- Side Effects
- Fatigue
- Constipation
- Hypercalcemia
- Kidney Stones
- Considerations
- More Effective Than Ergocalciferol
- Hypervitaminosis D
2 mins
Vitamin E (Alpha-tocopherol)
- Mechanism
- Antioxidant
- Indications
- Fat Malabsorption Syndrome
- Alpha-TTP Deficiency
- Side Effects
- Bleeding
- Considerations
- Increased Risk Hemorrhagic Stroke
- Limit Doses < 200 IU per Day
- Nuts and Whole Grains
- Vegetable Oils
2 mins
Vitamin C Mechanism and Deficiency
- Mechanism
- Ascorbic acid
- Antioxidant
- Protects Against Free Radicals
- Keeps Iron in Reduced State
- Hydroxylation of Proline and Lysine
- Necessary for Dopamine B Hydroxylase
- Deficiency Signs and Symptoms
- Scurvy
- Swollen Gums
- Bruising
- Poor Wound Healing
- Hemarthrosis
- Perifollicular Hemorrhages
- Anemia
4 mins
Vitamin D Deficiency
- Signs & Symptoms
- Rickets in children
- Bending bones
- Rachitic rosary
- Breast milk has decreased vitamin D
- Osteomalacia in adults
- Tetany from Hypocalcemia
2 mins
Vitamin D Mechanism
- 25 OH in the liver
- 1,25 OH in the kidney
- Absorbs Calcium and Phosphorus
42 secs
Vitamin K1 (Phytonadione)
- Mechanism
- Synthesizes Clotting Factors II, VII, IX, X
- Indications
- Hypoprothrombinemia
- Newborn Prophylaxis
- Bleeding from Warfarin Overdose
- Side Effects
- Shock
- Kernicterus
- Cardiac Arrest
- Considerations
- Bile Salts required for Intestinal Absorption
- Increased Risks with IV Administration
2 mins
Vitamin A (Retinol) Toxicity
- Signs and Symptoms
- Alopecia
- Vision Changes
- Headache
- Skin Changes
- Hyperlipidemia
- Hepatotoxicity
- Arthralgias
- Teratogen
- Cleft palate
- Cardiac Abnormalities
3 mins
Vitamin D Toxicity
- Kidney Stones
- Metastatic Calcification of the Kidney
- Loss of Appetite
- Abdominal Pain
- Sarcoidosis
1 min
Vitamin B6 (Pyridoxine) Deficiency
- Deficiency From Isoniazid
- Deficiency From Oral Contraceptives
- Seizures
- Hyperirritability
- Peripheral Neuropathy
- Sideroblastic Anemia
3 mins
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