-
What is the mechanism of resistance of MRSA?
Altered PBP, especiall PB2a.
-
Where does vasopressin act in the kidneys, through what receptor?
- Medullary collecting ducts
- V2.
-
What is gp41 of HIV responsible for, inhibited by?
- Viral penetration into target cells
- Enfurvitide.
-
What is gp120 of HIV responsible for?
Viral attachement to target cells.
-
What drug is specific for ischemic tissue, and used to prevent post-MI arrythmias?
Lidocaine.
-
What virus family is both non-enveloped and has single stranded DNA?
Parvoviridae.
-
What does parvovirus B19 cause?
- Erythema Infectiosum (fifth Disease)
- Aplastic crisis in sickle cell
- Hydrops fetalis.
-
Three medications causing drug-induced lupus?
- Procainamide
- Hydralazine
- Isoniazid.
-
What are the genes predisposing for Early Onset Alzheimers?
- APP chr 21
- Presenilin 1 chr 14
- Presenilin 2 chr 1.
-
What is the gene predisposing for Late Onset Alzheimers?
Apolipoprotein E4 (Homozygous).
-
What is Diptheria cultured on?
Cysteine-Tellurite Agar.
-
What virus family creates envelopes from Nuclear Membranes?
Herpes Viruses.
-
What Gram positive bacteria synthesize dextran from glucose?
Strep Viridans.
-
Measurement of Thiamine Def?
Erythrocyte Transketolase activity.
-
Variability of HCV in blood?
No 3->5 exonuclease Activity.
-
What determines extent of feminization in Klinefelters?
Estrogen:Testosterone Ratio.
-
What lab value is increased in Klinefelters?
FSH, reflects gonadal failure.
-
Cold Agglutinins are produced in response to what infections?
Mycoplasma pneumoniae, EBV.
-
Norepinephrine stimulates predominantly which receptors?
a1, b1.
-
What heart defects is congenital rubella associated with?
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