Exam 3 lecture 5 Flashcards
Name DPP-IV inhibitors
Sitagliptin, Saxagliptin, Linagliptin, Alogliptin
What does DPP IV do as an enzyme?
Breaks down GLP-1 and GIP. DPP inhibitors stop this breakdown.
describe GLP and GIP
they are incretin hormones that are released from the gut and help enhance insulin secretion in response to food.
What do GLPs and GIPs do?
stimulate insulin response in glucose dependent manner (prevent hypoglycemia)
DPP IV inhibitor efficacy
reduces A1c 0.5-1% (not as effective as GLPs)
DPP IV inhibitor effect on weight?
weight neutral
DPP IV dosing strategy
Excreted renally so dose should be adjusted in renal dysfunctions
side effects on DPP IV inhibitors
Nasopharyngitis
pancreatitis
upper respiratory infections
FDA warning for DPP IV inhibitors
Joint pain
HF risk
Which DPP IV inhibitor has no increased risk for CV events
Sitagliptin
sitagliptin dosing
100 mg qd
CRCL 30-50- 50 mg
Saxagliptin dosing
2.5-5 mg
crcl 30-50- 2.5 mg
What is the only DPP IV inhibitor not renally eliminated
Linagliptin (no renal adjustments needed)
Linagliptin dose
5 mg
alogliptin dosing
25 mg
CRCL 30-50- 12.5 mg
less than 30 CRCL- 6.25
sulfonylurea MOA
Stimulates insulin release from B cells
increases binding between insulin and receptor and also increases the number of receptors
What type of pts in sulfonylureas used in?
type 2 pts
name suulfonylurea drugs
Glyburide, glipizide, glimepride
Which sulfonylurea is preferred in renally impaired pts? why?
Glipizide
It is metabolized without active metabolites
side effects of sulfonylurea
Risk for hypoglycemia
glipizide dosing?
glipizide XL dosing?
starting 2.5-5
increase dose every 1-2 weeks until 20 mg (until 10 mg in glipizide XL)
glyburide dosing?
starting 1.25-5, max is 10 mg
Who are the best candidates for sulfonylureas
No type 1 pts
FBS<250
TZDs MOA
bind to PPAR-gamma on fat cells to allow us to decrease insulin resistance and decrease hepatic glucose production
TZD drug name
pioglitazone
Benefits of TZDs
Pioglitazones can decrease TG by 10-20% (make LDL fluffy and they do not stick together)
What are things we should monitor when taking pioglitazine
LFT (liver function test)
Adverse effects of TZDs
Hepatotoxicity
increases fracture risk
weight gain and edema
when to dx pioglitazone
when LFT is 3x normal