Paul Shared "Biochem review" - 61 Picmonics
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Biochem review
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
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
Beriberi (Thiamine Deficiency)
- Thiamine Deficiency
- Dry Beriberi
- Polyneuritis
- Muscle Wasting
- Wet Beriberi
- Dilated Cardiomyopathy
- Edema
51 secs
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
Citric Acid Cycle (Krebs Cycle)
- Characteristics
- Acetyl-CoA + Oxaloacetate
- Citric Acid
- Isocitric Acid
- Produces NADH
- Alpha-Ketoglutaric Acid
- Produces NADH
- Succinyl CoA
- Produces GTP
- Succinate
- Produces FADH2
- Fumarate
- Uses Water
- Malate
- Produces NADH
- Oxaloacetate
4 mins
Classic Galactosemia
- Pathophysiology
- Autosomal Recessive
- Galactose-1-phosphate uridyltransferase is Absent (GALT)
- Impaired Galactose-1-P to UDP-Galactose
- Galactitol Accumulation in Lens
- Signs and Symptoms
- Infantile Cataracts
- Failure to Thrive
- Hepatomegaly
- Jaundice
- Intellectual Disability
- Increased Risk E. Coli Sepsis
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
Cri Du Chat
- Pathophysiology
- Congenital Deletion of Short Arm of Chromosome 5p
- Signs and Symptoms
- High Pitched Cry/Mewing
- Microcephaly
- Hypotonia
- Difficulty Sucking and Swallowing
- Epicanthal Folds
- Widely Spaced Eyes
- Wide & Flat Nasal Bridge
- High Arched Palate
- Intellectual Disability
- Cardiac Abnormalities
3 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
Down Syndrome
- Pathophysiology
- Trisomy 21
- Meiotic Nondisjunction
- Signs and Symptoms
- Intellectual Disability (Mental Retardation)
- Single palmar crease
- Flat Facies
- Duodenal Atresia
- Hirschsprung's Disease
- Septum Primum Type ASD
- Endocardial Cushion Defects
- Prominent Epicanthal Folds
- Increased Risk of Acute Lymphoblastic Leukemia
- Alzheimer's Disease
3 mins
Edwards Syndrome
- Pathophysiology
- Trisomy 18
- Signs and Symptoms
- Intellectual Disability (Mental Retardation)
- Rocker Bottom Feet
- Ventricular Septal Defect (VSD)
- Clenched Hands
- Overlapping Fingers
- Low-Set Ears
- Micrognathia
- Prominent Occiput
- Omphalocele
- Meckel's Diverticulum
- Horseshoe Kidney
- Malrotation of Intestines
3 mins
Ehlers-Danlos Syndrome Disease
- Pathophysiology
- Faulty Collagen Synthesis
- Autosomal Dominant or Recessive
- Various Severities
- Signs and Symptoms
- Hypermobile Joints
- Hyperextensible Skin
- Easy Bruising/Bleeding
- Berry (Saccular) Aneurysm
- Considerations
- Brighton Criteria
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
Fragile X
- Pathophysiology
- Trinucleotide Repeat
- CGG Repeats
- FMR1 Gene
- X-linked Dominant
- Signs and Symptoms
- Developmental Delay
- Autism
- Large Ears
- Large Jaw
- Long Face
- Macroorchidism
2 mins
Friedreich's Ataxia
- Trinucleotide Repeat
- GAA Repeat
- Frataxin
- Mitochondrial Dysfunction
- Autosomal Recessive
- Hammertoes
- High Arches
- Kyphoscoliosis
- Lateral Corticospinal Tract
- Posterior Column
- Spinocerebellar Tract
- Type I Diabetes Mellitus
- Hypertrophic Cardiomyopathy
1 min
G6PD Mechanism
- Turns NADP+ to NADPH
- NADPH Used by Glutathione Reductase
- Detoxifies Free Radicals and Peroxides
- X-linked Recessive
2 mins
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
Hartnup Disease
- Pathophysiology
- Autosomal Recessive
- Neutral amino acids
- Defective Transporter
- Renal and Intestinal cells
- Signs and Symptoms
- Causes tryptophan excretion in urine
- Leads to Pellagra
- Diarrhea
- Dermatitis
- Dementia
2 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
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
