Vitamin B1 (Thiamine)
- Branched-chain Ketoacid Dehydrogenase
- Pyruvate Dehydrogenase
- Alpha-ketoglutarate Dehydrogenase
- Transketolase
- Wernicke-Korsakoff Syndrome
- Beriberi
- ATP Depletion
- Aerobic Tissues Like Brain and Heart Affected First
- Deficiency Can Worsen with Glucose Infusion
Beriberi (Thiamine Deficiency)
- Thiamine Deficiency
- Dry Beriberi
- Polyneuritis
- Muscle Wasting
- Wet Beriberi
- Dilated Cardiomyopathy
- Edema
Wernicke-Korsakoff Syndrome
- Thiamine deficiency
- Confusion
- Ophthalmoplegia
- Ataxia
- Korsakoff
- Confabulation
- Personality Changes
- Memory loss
- Alcoholics
- Damage to medial dorsal nucleus
- Damage to mammillary bodies
Riboflavin (Vitamin B2)
- Vitamin B2
- FAD
- FAD Makes 1.5 ATP
- Succinate to Fumarate
- Glossitis
- Cheilosis
- Corneal Vascularization
Vitamin B3 (Niacin)
- Derived from Tryptophan
- Synthesis Requires Vitamin B6
- Constituent of NAD+
- Hartnup Disease
- Carcinoid Syndrome
- Pellagra
- Diarrhea
- Dermatitis
- Dementia
- Glossitis
- Flushing
Niacin Therapy (Vitamin B3)
- Inhibits Lipolysis in Adipose Tissue
- Reduces Hepatic VLDL Secretion
- Decrease Triglycerides
- Decrease LDL
- Increase HDL
- Flushing
- Decreased by Aspirin
- Hyperglycemia
- Hyperuricemia
Vitamin B5 (Pantothenate)
- Pantothenate
- Pyruvate Dehydrogenase
- Coenzyme A
- Fatty Acid Synthase
- Enteritis
- Dermatitis
- Alopecia
- Adrenal Insufficiency
Vitamin B6 (Pyridoxine)
- Pyridoxal Phosphate
- Transamination
- Decarboxylation
- Glycogen Phosphorylase
- Cystathionine Synthase
- Heme Synthesis
- Niacin Synthesis
- Neurotransmitter Synthesis
Vitamin B6 (Pyridoxine) Deficiency
- Deficiency From Isoniazid
- Deficiency From Oral Contraceptives
- Seizures
- Hyperirritability
- Peripheral Neuropathy
- Sideroblastic Anemia
Biotin (Vitamin B7)
- Carboxylation Reaction
- Pyruvate Carboxylation to Oxaloacetate
- Propionyl-CoA Carboxylation to Methylmalonyl-CoA
- Acetyl-CoA Carboxylation to Malonyl CoA
- Antibiotic Use
- Ingestion of Raw Eggs
- Alopecia
- Dermatitis
- Enteritis
Folate Deficiency
- Macrocytic Anemia
- Megaloblastic Anemia
- Malabsorption
- Dietary
- Tea and Toast
- Alcoholics
- Medication-induced
- Methotrexate
- Trimethoprim
- Increased Requirement
- Hemolytic Anemia
- Pregnancy
Vitamin B12 (Cobalamin) Mechanism and Deficiency
- Cobalamin
- Large reserve pool in the liver
- Homocysteine to methionine
- Methylmalonyl CoA to succinyl CoA
- Macrocytic Megaloblastic Anemia
- Hypersegmented Neutrophils
- Neurologic defects
- Posterior column
- Lateral corticospinal tract
- Spinocerebellar tract
Vitamin B12 (Cobalamin) Deficiency Causes
- Vegans
- Pernicious Anemia
- Gastric Bypass Surgery
- Malabsorption
- Sprue
- Enteritis
- Crohn's Disease
- Diphyllobothrium latum
Vitamin C Mechanism and Deficiency
- Ascorbic acid
- Antioxidant
- Protects Against Free Radicals
- Keeps Iron in Reduced State
- Hydroxylation of Proline and Lysine
- Necessary for Dopamine B Hydroxylase
- Scurvy
- Swollen Gums
- Bruising
- Poor Wound Healing
- Hemarthrosis
- Perifollicular Hemorrhages
- Anemia
Methemoglobinemia Diagnosis and Management
- Cyanosis
- Respiratory Distress
- Headache
- Lethargy
- "Chocolate-colored Blood"
- Decreased Oxygen Saturation
- Normal Partial Pressure of Arterial O2 (PaO2)
- Identify Triggers
- Methylene Blue
- Vitamin C
- Exchange Transfusion
Vitamin B9 (Folate)
- Dark Green Leafy Vegetables
- Absorbed in Jejenum
- Hepatic Storage
- Dihydrofolate Reductase (DHFR)
- Tetrahydrofolate (THF)
- Methionine Synthase
- Nucleotide Synthesis
- Endothelial Protection