Type II Diabetes Mellitus Flashcards
Type 2 Diabetes
-Cause
-B-cell function
-Insulin
-Body type
-OOA
-Lifestyle, genetic
-B cell function –
normal
-Insulin resistance
- Obesity
-Onset less rapid,
milder symptoms
Classes of drugs?
D-I-A-G-S
- Insulin secretagogues
- Insulin sensitizers
- α-Glucosidase inhibitor
- Dipeptidyl Peptidase IV
(DPP-IV) Inhibitor - Glucagon-like peptide-1
(GLP-1) Mimetic - Sodium-glucose co-transporter 2 (SGLT2)
inhibitors
Insulin secretagogues
- Insulin levels
- Action dependency
- Dosing(x2)
- S/E
5.Microalbuminuria
- Insulin levels:
↑ basal and/or postprandial insulin levels - Action
dependency:
Actions depend on functional β-cells - Dosing(x2):
Sulfonylureas: 1-2 times daily
Meglitinides: 3-4 times daily - S/E:
-Weight gain,
hypoglycaemia
5.Microalbuminuria:
Reduce microalbuminuria
Sulfonylureas
- Generation
- MOA
- Drugs
- Generation:
2nd generation - MOA:
↑ insulin secretion
↓ hepatic clearance of insulin
↓ Glucagon levels - Drugs:
- Glibenclamide
- Gliclazide
- Glipazide
- Glimepiride
Sulfonylureas
- Metabolism
- Lipids
- Placenta
- Metabolites
- Metabolism:
Metabolised in the liver - Lipids:
No effect on lipids - Placenta:
Crosses placenta - Metabolites:
Metabolites excreted by
renal system
Sulfonylureas:
Drugs & DOA
- Drugs & DOA:
- Glibenclamide-Long acting 24hrs
- Gliclazide-Long acting 24hrs
- Glipazide-Short acting 12-24hrs
- Glimepiride-Short acting 12-24hrs
- A/E
- DI
Sulfonylureas
CI?
Significant hepatic / renal impairment – increases half-life
Sulfonylureas A/E?
1.Hypoglycemia
2. Nausea & vomiting
3. Allergic skin reactions
4. Minor disulfiram-like reactions
5.Headache, 6.Cardiotoxicity
Sulfonylureas DI?
- Aspirin & Sulphonamides potentiate the effects of SUs
- Hepatic enzyme inducers, corticosteroids, oral
contraceptives ↓ the effects of SUs - β-blockers mask the signs of hypoglycemi
Meglitinides
- Drugs
- Binding/MOA
- Combination
- Lipids
- Drugs:
Repaglinide and Nateglanide - Binding:
Bind to ATP-dependent K+ channels,
causing insulin release - Combination:
Not to be used in combination with SUs
(↑s insulin secretion) - Lipids:
No effect on lipids
Repaglinide
combination?
Can be combined with
* metformin or
* thiazolidinediones
Repaglinide S/E-5?
adverse effects:
1. Hypoglycemia
2. Upper respiratory tract
infections
3. Weight gain
4. Bronchitis
5. Headache
Nateglinide MOA?
- Rapid onset of action (3x more than R)
↑s early phase insulin release - Rapid-off action (5x more than R)
♦ Insulin return to pre-prandial levels 3-4 hrs
♦ ↓s risk of postprandial hypoglycemia
Nateglinide A/E-2?
- Nausea
- Diarrhea
- Mild hypoglycemia
- No increase in body weigh
Thiazolidinediones drugs?
- Rosiglitazone (withdrawn) 2.Pioglitazone
Thiazolidinediones
- Insulin
- Glucose
- Glucose uptake
- Therapeutic effect
- MOA-3
- Insulin:
Insulin sensitizers – enhance effects of insulin - Glucose:
Decrease Glucose output in liver - Glucose uptake:
Decreases glucose uptake and increase insulin sensitivity in muscles - Therapeutic effect:Therapeutic effect delayed for 4 – 12 weeks
- MOA:
-Agonist at the peroxisome
proliferator-activated
receptor – γ (PPARγ)
- Induces insulin gene
Thiazolidinedione - Pioglitazone
- LDL levels
- TG/FFA levels
- HDL levels
- Hypoglycaemia
- LDL levels:
No effect on LDL levels - TG/FFA levels:
↓ TG and FFA levels - HDL levels:
↑ HDL levels - Hypoglycaemia:
↓s risk of hypoglycemia
Thiazolidinedione - Pioglitazone therapeutic uses?
- Monotherapy
- With Sulfonylureas
- With Metformin
- With injected insulin
Thiazolidinedione - Pioglitazone caution?
Caution: heart failure /
History of heart failure
Thiazolidinedione - Pioglitazone A/E-5?
- Fluid retention (oedema)
- Weight gain
- Anaemia
- CVD
- Increased risk of cardiac ischaemi
Biguanides - Metformin
- Obese patients
- MOA
- Obese patients-Decreases body weight
- MOA:
Decreases hepatic glucose production, fasting insulin + Increase glucose uptake
Biguanides - Metformin
insulin?
Does not stimulate insulin secretion
Biguanides - Metformin insulin sensitivity?
↑ insulin sensitivity
Biguanides - Metformin:
- TG, FFA & LDL
- HDL levels
- Macrovascular
- Decreases TG, FFA & LDL
- Increases HDL levels
- Decreases risk for the development
of macrovascular complications
Biguanides - Metformin uses?
In combination with SUs,
meglitinide,
thiazolidinediones,
insulin, or α-glucosidase
inhibiton
Biguanides - Metformin CI-4?
- Renal Impairment & hepatic
disease - Alcohol abuse
- If predisposed to CV
collapse, acute CHF,
severe infection - History of lactic acidosis
Biguanides - Metformin A/E?
- GI disturbances –
abdominal discomfort and
diarrhoea, metallic taste,
mild anorexia - Lactic acidosis
α-glucosidase inhibitor - Acarbose MOA-3?
- Inhibits the breakdown of complex CHO in small
intestine - Delays CHO absorption
- Inhibits glucoamylase > sucrase > maltase
> dextranase
α-glucosidase inhibitor - Acarbose benefits?
↓s postprandial hyperglycemia (hypoglycemia – rare)
* No effect on lipids or insulin levels
Acarbose A/E?
*GI disturbances
* Dose-dependent toxicity
Acarbose CI-3?
- Inflammatory bowel
disease - GI obstruction
3.Cirrhosis
Acarbose combination ?
Can be combined with
insulin, metformin or
sulfonylureas – additive
effect
Dipeptidyl Peptidase IV
(DPP-IV) Inhibitors drugs?
- Sitagliptin
- Vildagliptin
3.Saxagliptin
Dipeptidyl Peptidase IV
(DPP-IV) Inhibitors insulin?
Extend action of insulin while
suppressing release of glucagon
Dipeptidyl Peptidase IV
(DPP-IV) Inhibitors insulin combination?
Can be combined with
insulin, metformin or
sulfonylureas – additive
effect
Dipeptidyl Peptidase IV
(DPP-IV) Inhibitors insulin A/E?
- Gastrointestinal
discomfort - Peripheral
- oedema
- liver dysfunction
Dipeptidyl Peptidase IV
(DPP-IV) Inhibitors caution?
Renal impairement
Glucagon-like peptide-1 (GLP-1) Mimetic drugs?
- Dulaglutide
- Exenatide
- Liraglutide
- Semaglutide
Glucagon-like peptide-1 (GLP-1) Mimetic A/E-4?
- Hypoglycemia,
- Nausea& vomiting
- Rash
- Pancreatitis
Glucagon-like peptide-1 (GLP-1) Mimetic CI?
- type 1 diabetes,
ketoacidosis, severe
renal impairment. - Not for use in pregnancy
Glucagon-like peptide-1 (GLP-1) Mimetic admin and dosage?
Admin: Administered
subcutaneously
Dosage:
1. Exenatide ( 2 x daily)
2. Liraglutide ( 1 x daily)
3. Semaglutide ( 1 x weekly
Glucagon-like peptide-1 (GLP-1) Mimetic & weight loss?
May promote weight loss
Glucagon-like peptide-1 (GLP-1) Mimetic & CVS?
Cardiovascular benefits
Sodium-glucose co-transporter 2
(SGLT2) inhibitors drugs?
- Dapagliflozin
- Canagliflozin
- Empagliflozin
Sodium-glucose co-transporter 2
(SGLT2) inhibitors MOA?
Competitive, selective
inhibitor of SGLT-2 –
preventing kidneys from
reabsorbing glucose into the
blood
Sodium-glucose co-transporter 2
(SGLT2) inhibitors CI-3?
- Renal impairment
- Not for use in pregnancy or
lactation - Can be combined with metformin, pioglitazone or
sitagliptin
Sodium-glucose co-transporter 2
(SGLT2) inhibitors A/E-2?
- Increased risk of genital
and urinary tract infections
2 Hypotension
Glucagon-like peptide-1 (GLP-1) Mimetic MOA?
- Incretin mimetic
- Exhibits GLP-1 actions
- Insulin secretion
4.Glucagon secretion