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PHCL 3100 EXAM 3 UMN QUESTIONS AND CORRECT ANSWERS

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PHCL 3100 EXAM 3 UMN QUESTIONS AND CORRECT ANSWERS

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Food/Herb Drug Interaction


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Ex. grapefruit and drug since grapefruit lowers drug-metabolizing enzyme




3. Normal Flora


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-Stable set of microbes that live inside us all the time.
*Killing them can lead to superinfection.




Azathioprine

,Give this one a try later!


Immunosuppressive Drug
Prodrug-Needs to be converted into 6-mercaptopurine-then inhibits DNA
synthesis
USE=ORGAN TRANSPLANT, *not bone marrow transplant though!




Penicillin G


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Natural Penicillins-Narrow spectrum only against gram-positive.




Two Characteristics of Cancer Cells


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1. Neoplasm-Cancer cells continuously reproduce
2. Metastasis-Cancer cells can enter the bloodstream and invade the rest
of the body




Ciprofloxacin


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Bacteriostatic at low doses
Bactericidal at high doses
Broad spectrum
Mechanism=Bind to bacterial type II topoisomerases (DNA gyrase and
topoisomerase IV) to cause inhibition of DNA replication and the

, generation of double-strand breaks
*most frequently prescribed antibiotic




Regulation of Acid Secretion


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Caused by parietal pump (H+ ATPase pump)

Positive Regulators:
-Gastrin-stomach hormone
-Histamine-Paracrine
-Muscarinic Acetylcholine-Neurotransmitter

Negative regulator-Prostagladins




HAART


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(High Activity Anti-Retroviral Therapy)-Given cocktail of 3-4 different drugs.
1. To prevent development of drug resistance
2. Effective in reducing HIV plasma concentrations, but doesn't eliminate
proviral DNA. (Cure to AIDS, not HIV infection)




Respiratory Stimulants (Analeptics)


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-Emergency situations only
-Not for COPD

, -Ex. Doxapram




1. Human Pathogens


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-Prokaryotes (Bacteria)
-Eukaryotes (Fungi, protozoa, parasitic worms)
-Non-cellular (Viruses and prions)




Pigmentation in Addison's Disease (Hypo-Corticoitism)


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-Symptoms=Fatigue and weakness, weight loss, increased pigmentation of
the skin
-Adrenal insufficiency




Penicillins


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-Structure=Beta-lactams
-Mechanism=Interfere with cell wall synthesis by inhibiting bacterial
transpeptidase
Resistance=Beta-lactamase

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