Flashcards in L17 Deck (38)
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1
What is the membrane derived molecule of important in anti-inflammatory drugs? What enzyme makes this?
Arachidonic acid
FROM membrane phospholipids w/ AA
Via phospholipase 2
2
What are the 2 generic names for Tylenol?
Acetaminophen
Paracetamol
3
What do you use acetaminophen to treat?
Pain
Fever
- Only weakly anti-inflam
4
Does acetaminophen have GI side effects?
NOPE
5
What 4 patient populations are specifically mentioned for acetaminophen use?
Kids
Pregnant women
Aspirin sensitivity
Patients on blood thinners (might be new genetic implications against this)
6
Which diseases are treated via acetaminophen for first line anti-inflam?
1. Osteoarthritis
Others:
Allergies: asthma
Eye: conjunctivitis
GI: IBD
Neuro: cerebral edema
Transplant: prevent rejection
Skin: dermatitis & dermatoses
7
What can you combine acetaminophen with to enhance its pain killing effects (and in turn use less opiates)?
Codeine
8
Would you use acetaminophen for RA or a sprained ankle?
NO
Weak anti-inflam
9
What is the mechanism of action for acetaminophen?
Unknown
Reversible inhibition of COX
10
What is the most concerning side effect with acetaminophen? Explain the mechanism of action.
Liver toxicity
Acetaminophen + p450 --> NAPQI = toxic metabolite
11
How does acetaminophen affect Stevens-Johnson syndrome?
Causes SCAR
12
How can the liver deal with NAPQI? Explain both hepatocyte survival and death.
1. + Glutathione
- Might be gone/low if alcoholic
W/o you'll get hetpaocyte damage. You can either:
- Fix the damage by inhibiting T cells: IL10 present
- TNF & IL1 beta present so you can't change T cells and they induce hepatocyte apoptosis
13
What is the body's natural steroid? Where is it made? Under the influence of what hormone? When is it produced?
Cortisol = glucocorticoid
@ Adrenal cortex (zona fasiculata)
ACTH (adrenocorticotropic hormone) from pituitary gland
For ACUTE protection in emergency
14
What is the most potent analog of cortisol? Name its uses. Name the diseases it treats.
Dexamethasone
Anti-inflam & IMMUNOSUPRESS
1. RA/arthritis
2. Bacterial meningitis for immune suppression before general antibiotics
15
What is the effect of cortisol on cytokines produced?
↓TNF alpha & IL6 = pro-inflam
↑IL 10 = anti-inflam
16
What are the 4 possible mechanisms of cortisol at the DNA?
1. DIRECT: binds gluco-corticoid receptor --> TF & binds DNA @ GRE (glucocorticoid response element) to promote synthesis of IL10/anti-inflam molecules
2. DIRECT: binds GCR --> TF @ DNA non-GRE elements (other areas)
3. INDIRECT: sequesters other TFs
4. INDIRECT: with SRC1 (steriod receptor co-activator) changes histones via acetylating & deact enzymes
17
What are the 2 possible mechanisms of cortisol outside the DNA (non-genomic)?
1. Interfere with membranes of the cell or mitochondria
2. Binds membrane GCPR
18
What glucocorticoid drug in the liver is converted by 3B-HSD? Name its uses.
Prednisone
Many things - Crohn's when aspirin doesn't work
19
What is lupus?
Autoimmune @ joints, organs, skin
Women
Butterfly rash
20
What do you use to treat lupus?
Flare ups - steroids
- Prednisone = immediate relief
Remission - NSAIDs
21
What are some side-effects of prednisone?
Weight gain - central obesity
Osteoporosis
Buffalo hump
Can't sleep
Etc, etc
22
Which glucocorticoid is used topically?
Betamethasone
Topical for skin rashes
23
When is betamethasone used as an injection?
MS flares
Babies - lung maturation
Asthma attack
24
What is the aerosol spray glucocorticoid? What is it used for?
Fluticasone (flonase)
Allergies!
25
What are DMARDs? What is unique about these vs NSAIDs? What are the 2 categories?
Disease modifying anti-rheumatic drugs
ALTERS the course of disease - slows/blocks progression (not a cure)
1. Small molecules
2. Biologics
26
Which diseases are DMARDs first line treatment for?
RA
Lupus
Crohn's
Esp. methotrexate
27
What are 2 cytokines elevated in RA?
↑TNF & IL1 --> pro-inflammatory
28
What are the 2 small molecule DMARDs?
Methotrexate - first choice
Leflunimide
29
Explain the 2 effects of methotrexate.
1. High doses = chemotherapy
No folic acid - X purine synthesis
2. Low doses - immune suppression
No folic acid - adenosine accumulation
Suppress T & B cells
30
