Glen Shared "Biochem" - 86 Picmonics
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Biochem
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
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
Ataxia Telangiectasia
- Pathophysiology
- Autosomal Recessive
- ATM Gene
- Defect in DNA repair
- Signs & Symptoms
- Cerebellar defects
- Spider Angiomas
- Sensitive to Radiation
- Defective Tumor Suppressor Gene
- Increased risk of Cancer, Leukemias, and Lymphomas
- Increased AFP levels
- IgA deficiency
- Repeated sinopulmonary infections
2 mins
I-cell disease
- Mechanism/Cause
- Decrease in Mannose-6-Phosphate
- Defect in Phosphotransferase
- Proteins are excreted extracellulary
- High Plasma levels of lysosomal enzymes
- Failure of cis Golgi to phosphorylate Mannose residues
- Symptoms/Findings
- Clouded Corneas
- Often fatal in Childood
- Coarse Facies
- Restricted joint movement
- Also known as Mucolipidosis Type II
Collagen types
- Type 1
- Dermis
- Bones
- Tendons
- Ligaments
- Dentin
- Cornea
- Blood Vessels
- Scar tissue
- Type 2
- Cartilage
- Nucleus Pulposus
- Type 3
- Reticulin:
- Skin
- Lungs
- Intestines
- Blood vessels
- Bone Marrow
- Lymphatics
- Granulation tissue
- Type 4
- Basement membrane
Osteogenesis Imperfecta
- Pathophysiology
- Autosomal Dominant
- Decreased Type I Collagen Production
- Symptoms
- Phenotypically Diverse
- Brittle Bone Disease
- Fractures from Minimal Trauma
- Confused with Child Abuse
- Hearing Loss
- Dental Imperfections
- Blue Sclera
1 min
Ehlers-Danlos Syndrome Types
- Types
- Types 1 and 2 - Classical
- Type V Collagen Mutation
- Joints and Skin
- Type 3 - Hypermobility
- Most Common
- Tenascin X Deficiency
- Joint Instability
- Type 4 - Vascular
- Type III Collagen Mutation
- Vascular and Organ Rupture
2 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
Menkes Disease
- X-linked recessive
- Impaired copper transport/absorption
- Defect in Menkes Protein (ATP7A)
- Decreased activity of Lysyl Oxidase
- Symptoms
- Brittle/kinky Hair
- Growth Retardation
- Hypotonia
Marfan Syndrome
- Mechanism
- Fibrillin-1 Mutation
- Symptoms
- Autosomal Dominant
- Tall
- Arachnodactyly
- Pectus Excavatum
- Hypermobile Joints
- Aortic Aneurysm And Dissection
- Mitral Valve Prolapse (MVP)
- Subluxation of Lens (Superior)
2 mins
McCune Albright
- Constitutively active G protein (GNAS)
- Increased CAMP
- Cafe au lait jagged coast of Maine border that respects midline
- Fibrous dysplasia
- Precocious puberty
- Hypercalcemia
- Increased Vitamin D
- Increased Alkaline Phosphatase
- Normal Parathyroid hormone (PTH)
- Aromatase Inhibitors
- Bisphosphonates for bone lesions
Prader-Willi Syndrome
- Mechanism
- Maternal Imprinting
- Deletion of Chromosome 15q (Paternal Deletion)
- Signs And Symptoms
- Hyperphagia
- Truncal Obesity
- Hypogonadism
- Undescended Testicles (Cryptorchidism)
- Intellectual Disability (Mental Retardation)
- Neonatal Hypotonia (Floppy Baby)
- Almond Shaped Eyes
- Narrow Bifrontal Diameter
- Thin Upper Lip
3 mins
Angelman's Syndrome
- Mechanism
- Paternal Imprinting
- Deletion of Chromosome 15q (Maternal Deletion)
- Signs And Symptoms
- Happy Puppet Syndrome
- Inappropriate Laughter
- Ataxia
- Severe Intellectual Disability (Mental Retardation)
- Seizure
- Abnormal EEG
2 mins
Mitochondrial Myopathies
- Defective oxidative phosphorylation
- Lactic acidosis
- stroke and seizure
Cystic Fibrosis Mechanisms
- Autosomal Recessive
- CFTR Chromosome 7
- Cl- channel Defect
- Decreased Chloride Secretion
- Increased Na and Water Reabsorption
- Increased Na and Cl in Sweat
- Dehydration of Mucous Layers
2 mins
Cystic Fibrosis Diagnosis and Treatment
- Diagnosis
- Sweat Chloride Test > 60 mmol/L
- Meconium Ileus
- Treatment
- N-acetylcysteine
- Antibiotic Prophylaxis
- Pulmonary Maintenance
- Lung Transplant
- Vitamin Replacement
1 min
Cystic Fibrosis Symptoms and Complications
- Recurrent Pulmonary Infections
- Chronic Bronchitis
- Nasal Polyps
- Pancreatic Insufficiency
- Intestinal Obstruction
- Malabsorption and Diarrhea
- Vitamin Deficiencies
- Chronic Hepatic Disease
- Infertility in Males
1 min
Muscular Dystrophy
- Mechanism
- X-linked Recessive
- Signs and Symptoms
- Muscle Weakness
- Motor Problems
- Gower Sign
- Large Calves
- Waddling Gait
- Loss of Ambulation
- Consideration
- Cardiac and Respiratory Failure
2 mins
Myotonic Dystrophy
- Pathophysiology
- Autosomal Dominant
- Trinucleotide Repeat
- CTG
- Signs and Symptoms
- Facial Muscle Weakness
- Frontal Balding
- Sustained Grip
- Conduction Defects
- Cataracts
- Selective Atrophy of Type 1 Fibers
- Testicular Atrophy
2 mins
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
