me Shared "Biochem" - 63 Picmonics
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Biochem
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
Thymic Aplasia (DiGeorge Syndrome)
- Pathophysiology
- DiGeorge Syndrome
- 22q11 Deletion
- Failure to Develop Third and Fourth Pharyngeal Pouches
- Signs and Symptoms
- Undeveloped Thymus
- T Cell Deficiency
- Recurrent Viral and Fungal Infections
- Undeveloped Parathyroids
- Hypocalcemia
- Tetany
- Aortic Defects
- Congenital Heart Defects
- Diagnosis
- Absent Thymic Shadow on CXR
2 mins
Hunter Syndrome
- Pathophysiology
- X-linked Recessive
- Mucopolysaccharidoses
- Iduronate Sulfatase Deficiency
- Increased Dermatan Sulfate
- Increased Heparan Sulfate
- Signs and Symptoms
- No Corneal Clouding
- Aggressive Behavior
1 min
Hurler Syndrome
- Pathophysiology
- Autosomal Recessive
- Mucopolysaccharidoses
- Alpha-L-Iduronidase Deficiency
- Increased Heparan Sulfate
- Increased Dermatan Sulfate
- Signs and Symptoms
- Hepatosplenomegaly
- Developmental Delay
- Gargoylism
- Corneal Clouding
- Airway Obstruction
2 mins
Metachromatic Leukodystrophy
- Pathophysiology
- Autosomal Recessive
- Arylsulfatase A Deficiency
- Increased Cerebroside Sulfate
- Signs and Symptoms
- Demyelination
- Ataxia
- Dementia
1 min
Krabbe Disease
- Pathophysiology
- Autosomal Recessive
- Galactocerebrosidase Deficiency
- Increased Psychosine
- Signs and Symptoms
- Developmental Delay
- Peripheral Neuropathy
- Optic Atrophy
- Diagnosis
- Globoid Cells
1 min
Tay-Sachs Disease
- Pathophysiology
- Autosomal Recessive
- Hexosaminidase A Deficiency
- Increased GM2 Ganglioside
- More Common in Ashkenazi Jewish Population
- Signs and Symptoms
- Cherry Red Spot on Macula
- Neurodegeneration
- Developmental Delay
- Diagnosis
- Onion Skin Lysosomes
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
Gauchers Disease
- Pathophysiology
- Autosomal Recessive
- Beta Glucocerebrosidase Deficiency
- Diagnosis
- Lipid-laden Macrophages
- Crumpled Tissue Paper
- Signs and Symptoms
- Osteoporosis
- Bone Crises
- Aseptic Necrosis of Femur
- Erlenmeyer Flask Deformity
- Hepatosplenomegaly
- Pancytopenia
2 mins
Fabry's Disease
- Pathophysiology
- X-linked Recessive
- Alpha-galactosidase A Deficiency
- Increased Ceramide trihexoside
- Early Signs and Symptoms
- Decreased Sweating (Hypohidrosis)
- Angiokeratoma
- Episodic Peripheral Neuropathy
- Late Signs and Symptoms
- Cardiovascular Disease
- Renal Failure
1 min
McArdles Disease
- Pathophysiology
- Type V Glycogen Storage Disease
- Muscle Glycogen Phosphorylase Deficiency
- Signs and Symptoms
- Increased Glycogen in Muscle
- Painful Muscle Cramps
- Myoglobinuria
- Normal Lactic Acid
- Treatment
- Vitamin B6
2 mins
Cori Disease
- Pathophysiology
- Type III Glycogen Storage Disease
- Deficiency of Alpha 1, 6 Glucosidase
- Debranching Enzyme
- Limit-Dextrin Accumulation (In Cytosolic Structures)
- Signs and Symptoms
- Hypoglycemia
- Muscle Weakness
- Hypotonia
- Stunted Growth
- Hepatomegaly
- Diagnosis
- Normal Blood Lactic Acid Levels
- Gluconeogenesis Intact
- Increased LFT's
- Increased Creatine Kinase (CK/CPK)
- Treatment
- Continuous Feeding
- High Protein Diet
- Cornstarch (Uncooked)
4 mins
Pompe Disease
- Pathophysiology
- Type II Glycogen Storage Disease
- Autosomal Recessive
- Deficiency of Lysosomal Alpha 1,4 Glucosidase
- Acid Maltase
- Signs and Symptoms
- Hypertrophic Cardiomyopathy
- Hepatomegaly
- Macroglossia
- Hypotonia
- Diagnosis
- Increased Glycogen within Lysosomes
- Increased Lactate Dehydrogenase (LDH)
- Increased Creatine Kinase (CK/CPK)
2 mins
Von Gierke Disease
- Pathophysiology
- Autosomal Recessive
- Type I Glycogen Storage Disease
- Glucose-6-Phosphatase Deficiency
- Signs and Symptoms
- Increased Glycogen in Liver
- Hepatomegaly
- Enlarged Kidneys
- Severe Fasting Hypoglycemia
- Increased Triglycerides
- Increased Uric Acid (Gout)
- Increased Lactic Acid
- Doll-like Facies
- Treatment
- Continuous Oral Glucose (or Cornstarch)
- Avoid Fructose and Galactose
2 mins
Cystinuria
- Pathophysiology
- Defect of Renal Tubular Amino Acid Transporter
- C-O-L-A Acronym
- Cystine
- Ornithine
- Lysine
- Arginine
- Signs and Symptoms
- Excess Cystine in Urine
- Hexagonal Crystals
- Staghorn Kidney Stones
- Diagnosis
- Cyanide Nitroprusside Test
- Treatment
- Acetazolamide to Alkalinize the Urine
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
- Atherosclerosis
- Consideration
- Dietary Deficiencies Can Elevate Homocysteine Levels
3 mins
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
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
- Hypopigmentation
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
1 min
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
