WK2 Flashcards
Ketaconazole does what?
Inhibits Side-Chain cleavage and other CYP enzymes (Anti-fungal)
Metyrapone does what?
Inhibits 11-b-hydroxylase
Etomidate does what?
Inhibits 11-b-hydroxylase
Ketaconazole is used for what in endocrine?
Decrease Cortisol in Cushing Disease
Metyrapone and Etomidate are used for what?
DecreaseCortisol levels in Cushing Disease
Which drug can be used when waiting for definitive diagnosis of Cushing Disease?
Metyrapone
Toxicity of Ketaconazole
LIVER TOX
Treatments for Cushing disease that decrease ACTH release?
DA agonist (Cabergoline) SST analog (Pasireotide)
Mifepristone does what?
Anatagonist of Glucocorticoid Receptor
Mifepristone is used for what? (2)
Inoperable disease
Ectopic ACTH tumors that have failed other treatments
Mitotane is what?
a DDT insecticide with adrenal toxicity
SE of Mitotane?
Adrenal Carcinoma
Symptoms of Cushing Syndrome
Truncal Obesity Moon Facies HTN Wt Gain Hyperglycemia Glucose intolerance
Symptoms of Addison’s Disease?
Hypoglycemia
Metabolic Acidosis
Hyperpigmentation
Hypotension
Symptomatic difference between primary adrenal insufficiency (Addisons) and secondary?
Secondary = Decreased ACTH
- Normal Aldosterone = NO HYPOTENSION
- Low ACTH = NO HYPOPIGMENTATION
Glucocorticoid toxicity in heart?
Positive ionotrope (Tachycardia) HTN
Glucocorticoid toxicity in in CNS?
Lowered seizure threshold (hypokalemia)
Behavior changes
Glucocorticoid toxicity in GI?
Increased HCl (Peptic Ulcer) Antagonizes VitDR = decreased Ca and PO4 absorption
Glucocorticoid toxicity in in bones?
DIRECT osteoblast inhibition
Decreased Ca –> Increased PTH increased osteoclast action
Glucocorticoid toxicity in muscles?
Hypokalemia (cramps, myopathy)
How are specific blood cells affected?
Decreased Lymphocytes, Eosinophils and Basophils
Increased RBC and Neutrophils
Leukocyte extravasation inhibited
Anti-inflammatory effects of glucocorticoids (5)?
Decreased AA conc Reduced COX-2 Decreased peripheral leukocytes Stabilized lysosomal membranes Reduction of vasoactive factors
What enzyme activates Prednisone?
11-b-hydroxylase-2 (inhibits cortisol)
Hydrocortisone GC, MC, and duration of action?
1, 1, 8hrs
Prednisolone GC, MC, and duration of action?
4, 0.8, 16-36 hrs
Dexamethasone GC, MC, and duration of action?
25-80
0
36-54 hrs
Betamethasone GC, MC, and duration of action?
25-30
0
36-54
Fludocortisone GC, MC, and duration of action?
15
200
24 hrs
Which glucocorticoid agonizes the minerocorticoid receptor the most?
Fludocortisone
What enzyme does licorice inhibit?
11-b-hydroxylase
Metformin (Biguanides) acts how?
Activates AMPK
Inhibits gluconeogenesis
Increased skeletal and adipocyte glucose uptake
Metformin is used for what?
Type II DM (Insulin independent)
SE of metformin? What isn’t a SE of metformin, but is of other diabetes drugs?
GI distress, lactic acidosis
Hypoglycemia
Chlorpropramide is what?
1st gen sulfonylurea
Tolbutamide is what?
1st gen sulfonylurea
Tolazamide is what?
1st gen sulfonylurea
Glyburide is what?
2nd gen sulfonylurea
Glipizide is what?
2nd gen sulfonylurea
Glimepride is what?
2nd gen sulfonylurea
Sulfonylurea MOA?
Bind ATP dep K channels and close them, increasing intracellular Ca, causing Insulin release
SE of sulfonylureas?
Hypoglycemia
Wt Gain
Sulfonylurea in pregnancy? Why?
NOT IN PREG
Cross the placenta and cause hypoglycemia
Why are 2nd gen sulfonylureas better than 1st?
2nd gen have shorter half life and more potency
Lispro onset, max, and duration?
15 min - 1 hr - 4 hrs
Regular Insulin onset, max, duration?
30 mins - 2 hr - 8 hrs
NPH Insulin onset, max, duration?
2 hrs - 10 hrs - 20 hrs
Insulin Glargine inset, max, duration?
2 hrs - no peak - 24 hrs
Who needs supplemental Insulin?
Type I (insulin-dependent)
SE of insulin supplementation?
Hypoglycemia
Wt gain
GLP-1 analog MOA?
GLP-1 = glucagon like hormone secreted by intestinal epithelial cells
Stimulates Insulin
Decreased Glucagon
Induces Saiety
Exenatide is what?
GLP-1 Analog (INJECTED)
SE of GLP-1 analog?
Wt loss
hypoglycemia
PANCREATITIS
Sitagliptin is what?
DPP-4 inhibitior
Sitagliptin MOA?
Inhibits dipeptidyl peptidase-4, which usually metabolizes GLP-1
Increases GLP-1 half-life
Meglitinites (Repeglinitide, nateglinitide) are what?
Insulin secretagogues
Meglitinites MOA?
bind different binding site on K channels, increasing Insulin release
SE of Sitagliptin?
Nausea and vomiting
No hypoglycemia or wt changes
SE of Megltinites?
Wt gain
Hypoglycemia
Acarbose is what?
a-glucosidase inhibitor
Miglitol is what?
a-glucosidase inhibitor
Acarbose and Miglitol MOA?
Inhibit a-glucosidase in brush border intestinal cells, decreasing glucose intake with meals
SE of a-glucosidase inhibitors?
Flatulence
Diarrhea
Pramlintide is what?
Amylin analog
Pramlintide MOA?
Binds Amylin receptor
Decreases glucagon synthesis
Delays gastric emptying
Increases Saiety
Pramlintide SE?
GI distress
Rosiglitazone, pioglitazone, troglitazone is hwat?
Thiazolidinediones
Thazolidinediones MOA?
Binds PPARy upregulates genes to increase skeletal and adipocyte glucose uptake
decrease insulin resistance
SE of thazolidines?
Hypoglycemia
Edema (HF?)
Liver Tox