Dave Shared "Metabolism + Vit" - 44 Picmonics

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Metabolism + Vit

Adenosine Deaminase Deficiency
Adenosine to inosine
Excess ATP
Inhibition of Ribonucleotide Reductase
Prevents DNA synthesis
Decreases B Cells and T Cells
Major cause of SCID
1 min
Hyperammonemia
Pathophysiology
Hereditary Urea Cycle Defects
Acquired Through Liver Disease
Inhibits the Citric Acid Cycle
Signs & Symptoms
Somnolence
Slurring of Speech
Tremor
Cerebral Edema
Vomiting
Blurring of Vision
Treatment
Limit Protein in Diet
Lactulose
Benzoate Binds Amino Acid for Excretion
Phenylbutyrate
4 mins
Lesch-Nyhan Syndrome
X-linked Recessive
Absence of HGPRT
Hypoxanthine to IMP
Guanine to GMP
Excess uric acid
Gout
Retardation
Self-mutilation
Choreoathetosis
PRPP is increased
2 mins
Maple Syrup Urine Disease
Pathophysiology
Defect in alpha ketoacid dehydrogenase
Blocked degradation of branched chain amino acids
Leucine
Isoleucine
Valine
Signs and Symptoms
Seizures
Intellectual Disability (Mental Retardation)
1 min
Niemann-Pick Disease
Pathophysiology
Autosomal Recessive
Sphingomyelinase Deficiency
More Common in Ashkenazi Jewish Population
Signs and Symptoms
Cherry Red Spot on Macula
Hepatosplenomegaly
Neurodegeneration
Diagnosis
Foam Cells
1 min
Phenylketonuria (PKU)
Pathophysiology
Decreased phenylalanine hydroxylase
Decreased tetrahydrobiopterin cofactor
Autosomal Recessive
Tyrosine Becomes Essential
Phenylalanine found in Nutrasweet
Symptoms
Musty or mousy body odor
Growth retardation
Seizures
Intellectual Disability (Mental Retardation)
Hypopigmentation
2 mins
Gout Disease
Acute Inflammatory Monoarthritis
Epidemiology
Primarily in Males
Pathophysiology
Precipitation of Monosodium Urate Crystals
Underexcretion of Uric Acid
Overproduction of Uric Acid
Negatively Birefringent, Needle-Shaped
Symptoms
Swollen, Red, Painful Joint
Asymmetric Joint Distribution
Podagra
Tophus
After Large Meal or Alcohol
2 mins
Gout Treatment
Acute (Acute-angle)
NSAIDs
Glucocorticoids
Colchicine
Impairs Leukocyte Chemotaxis
Chronic Gout (Crone Goat)
Inhibit Xanthine Oxidase
Allopurinol
Febuxostat
Inhibit Reabsorption of Uric Acid
Probenecid
1 min
Alkaptonuria
Autosomal Recessive
Deficiency of homogentisic acid oxidase
In degradative pathway of tyrosine to fumarate
Homogentisic acid harmful to cartilage
Arthritis
Dark Connective Tissue
Urine turns black on standing
1 min
Ornithine Transcarbamylase Deficiency
Pathophysiology
Most Common Urea Cycle Disorder
X-Linked Recessive
Signs and Symptoms
Hyperammonemia
Decreased BUN
Carbamoyl Phosphate is Converted to Orotic Acid
Pyrimidine Synthesis Pathway
Evident in Babies
3 mins
Homocystinuria
Pathophysiology
Autosomal Recessive
4 Forms
Cystathionine Synthase Deficiency
Decreased Affinity of Cystathionine Synthase For Vitamin B6
Methionine Synthase Deficiency
Methylenetetrahydrofolate Reductase (MTHFR) Deficiency
Signs and Symptoms
Marfanoid Body Habitus
Kyphosis
Lens Subluxation (Inferior)
Intellectual Disability (Mental Retardation)
Atherosclerosis
Consideration
Dietary Deficiencies Can Elevate Homocysteine Levels
3 mins
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
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
Beriberi (Thiamine Deficiency)
Thiamine deficiency
Dry beriberi
Polyneuritis
Muscle wasting
Wet beriberi
Dilated Cardiomyopathy
Edema
50 secs
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
1 min
Vitamin B5 (Pantothenate)
Mechanism
Pantothenate
Pyruvate Dehydrogenase
Coenzyme A
Fatty Acid Synthase
Deficiency Signs and Symptoms
Enteritis
Dermatitis
Alopecia
Adrenal Insufficiency
2 mins
Vitamin B6 (Pyridoxine)
Pyridoxal Phosphate
Mechanism
Transamination
Decarboxylation
Glycogen Phosphorylase
Cystathionine Synthase
Functions
Heme Synthesis
Niacin Synthesis
Neurotransmitter Synthesis
2 mins
Vitamin B6 (Pyridoxine) Deficiency
Deficiency From Isoniazid
Deficiency From Oral Contraceptives
Seizures
Hyperirritability
Peripheral Neuropathy
Sideroblastic Anemia
3 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

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