Monique Shared "1st Aid - Biochemistry" - 98 Picmonics
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1st Aid - Biochemistry
Leflunomide
- Mechanism
- Reversibly inhibits dihydroorotate dehydrogenase, preventing pyrimidine synthesis.
- Suppresses T-cell proliferation.
- CLINICAL USE
- Rheumatoid arthritis
- Psoriatic Arthritis
- ADVERSE EFFECTS
- Diarrhea
- Hypertension
- Hepatotoxicity
- Teratogenicity
Methotrexate
- Indications
- Rheumatoid Arthritis
- Cancer
- Medical Abortion
- Mechanism
- Folic Acid Analog
- Inhibits Dihydrofolate Reductase
- Side Effects
- Pulmonary Fibrosis
- Myelosuppression is Treated with Leucovorin Rescue (Folinic Acid)
- Macrocytic Anemia
- Hepatitis
- Teratogenic
- Mucositis
2 mins
Trimethoprim
- Mechanism of Action
- Bacteriostatic
- Inhibits Bacterial Dihydrofolate Reductase
- Causes Sequential Block of Folate Synthesis
- Used in Combination with Sulfamethoxazole
- Combination Used For Recurrent Urinary Tract Infections
- Indications
- Shigella
- Salmonella
- Pneumocystis Jiroveci Pneumonia
- Side Effects
- Decrease in Red and White Blood Cells
- Alleviated with Leucovorin Rescue
2 mins
Fluorouracil (5-FU)
- Mechanism
- Antimetabolite
- "Thymine-less Death"
- Indications
- Slow-growing Solid Tumors
- Co-administered with Leucovorin for Stomach Cancer
- Basal Cell Carcinoma (Topical)
- Side Effects
- Myelosuppression
- Mucositis
- Severe Diarrhea
3 mins
Azathioprine (Imuran)
- Mechanism
- Antimetabolite
- Prodrug of 6-mercaptopurine (6-MP)
- Inhibits Synthesis of Nucleic Acids
- Indications
- Autoimmune Disorders
- Kidney Transplantation
- Side Effects
- Myelosuppression
- Increased Toxicity with Allopurinol Use
- Pancreatitis
- Malignancy
3 mins
Mycophenolate Mofetil
- mechanisms
- Reversible inhibitor of IMP dehydrogenase
- Inhibits De Novo Purine Synthesis Pathway
- Deprives T and B Cells of Guanine Nucleotides
- indications
- Dermatitis
- Connective Tissue Diseases
- Vasculitis
- Transplant Rejection
- adverse effects
- GI distress
- Pancytopenia
- Hypertension
- Hyperglycemia
Ribavirin
- Mechanism
- Hypermutation in RNA Viruses
- Inhibits Inosine Monophosphate Dehydrogenase
- Indications
- Hepatitis C
- Viral Hemorrhagic Fevers
- Respiratory Syncytial Virus (RSV)
- Side Effects
- Hemolytic Anemia
- Teratogen
1 min
Hydroxyurea
- Mechanism
- Inhibits Ribonucleotide Reductase
- Decreased DNA Synthesis
- S-phase Specific
- Indications
- Melanoma
- Chronic Myelogenous Leukemia (CML)
- Sickle Cell Disease
- Through Increased HbF (Fetal Hemoglobin)
- Side Effects
- Myelosuppression
- GI Distress
2 mins
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
Camptothecins
- Topotecan
- Irinotecan
- Indications
- Solid tumors
- MOA
- Inhibit Topoisomerase I
- Toxicities
- Diarrhea
- Myelosuppression
Etoposide
- Indications
- Small Cell Lung Cancer
- Testicular Cancer
- Mechanism of Action
- Inhibits Topoisomerase II
- Errors in DNA Synthesis Cause Apoptosis
- Side Effects
- Myelosuppression
- Alopecia
- Hypotension
- Nausea and Vomiting
2 mins
Fluoroquinolones Antibiotics
- -floxacin
- Mechanism of Action
- Inhibits Topoisomerase II & IV
- Bactericidal
- Indications
- Gram-negative Rods
- Pneumonia
- Gastrointestinal Infections
- Urinary Tract Infection
- Genital Infections
- Drugs
- Levofloxacin
- Ciprofloxacin
- Has Pseudomonas Coverage
- Considerations
- Avoid Polyvalent Cations
3 mins
Fluoroquinolones Toxicities
- Diarrhea
- Skin Rash
- Headache
- Tendon Rupture in Adults
- Myalgias in Kids
- Damage to Cartilage
- Teratogen
- QT Prolongation
1 min
Xeroderma Pigmentosum
- Pathophysiology
- Defective Nucleotide Excision Repair
- Complications
- Extreme Light Sensitivity
- Dark Freckles on Skin
- Pale, Dry Skin
- Susceptible to UV Rays A and B
- Corneal Ulcers
- Increased Risk of Skin Cancer
- Some Patients Present Progressive Neurodegeneration
2 mins
Lynch Syndrome (Hereditary Nonpolyposis Colorectal Cancer)
- Characteristics
- Autosomal Dominant
- Defective DNA Mismatch Repair
- 80% Risk of Colon Cancer Development
- Proximal (Right) Colon
- Type II associated with Endometrial, Ovarian and Skin Cancers
- 3-2-1 Rule
- 3 Relatives with Colon Cancer
- Occurs Across 2 Generations
- 1 Relative Diagnosed < 50 Years Old
- Treatment
- Frequent Screening
- Colectomy
3 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
Fanconi Anemia
- Most common form of inherited aplastic anemia
- Caused by inherited defects in non-homologous end-joining
- Signs and Symptoms
- Hypopigmented Areas of Skin
- Cafe au lait spots
- Microcephaly
- Thumb abnormalities
- Elevated serum AFP in 50% of cases
- Increased HbF (Fetal Hemoglobin)
- Diagnosis
- Culturing lymphocytes and observing extensive chromosomal breakage in the presence of DNA cross-linking agents
- Risk of developing
- Acute myelogenous leukemia (AML)
- Myelodysplastic syndrome
- Squamous cell carcinoma of head, neck, or vulva
- Treatment
- Treatment
Dactinomycin (Actinomycin D)
- Indications
- Wilms' Tumor
- Rhabdomyosarcoma
- Ewing's Sarcoma
- Gestational Trophoblastic Malignancy
- Mechanism
- Intercalates DNA
- Side Effect
- Myelosuppression
2 mins
Rifampin
- Tuberculosis (TB)
- Blocks RNA Polymerization
- Haemophilus influenzae Type B
- Leprosy
- Meningitis
- P450 inducer
- Red-orange urine
55 secs
