Lecture 11 from a college level neuropharmacology course taught in the spring 2012 semester by Brian J. Piper, Ph.D. (psy391@gmail.com) at Willamette University.
Second and third generation antipsychoticsDr Wasim
SECOND & THIRD GENERATION ANTIPSYCHOTIC mechanism of actionmechanism of side effectmanagment of side effect BY DR WASIM UNDERGUIDANCE OF DR SANJAY JAIN
First generation=typical antipsychoticaka conventionalprimary pharmacological property of D2 antagonistSecond generation=atypical antipsychoticlow EPS and good for negative symptomsThird generation=aripiprazole metabolic friendly
MECHANISM OF ACTION
1) serotonin dopamine antagonists
4)serotonin partial agonist
MECHANISM OF SIDE EFFECT
Serotonin-2C, muscarinic-3, and histamine-1 receptors as well as receptors X
identified are all hypothetically linked to cardiometabolic risk.
antagonism of serotonin-2C and histamine-1 receptors is associated with weight gain, while antagonism atmuscarinic-3 receptors can impair insulin regulation.
An unknown receptor X may be involved in the rapid production of insulin resistance and may also rapidly cause elevated fasting plasma triglyceride levels in some patients who experience increased cardiometabolic risk on certain atypical antipsychotics
Atypical antipsychotic and risk for weight gain.FDA and experts agree on three tiers of risk
Atypical antipsychotic and cardiometabolic risk.FDA and experts disagree on one versus three teirs of risk
Metabolic friendly antipsychotic.Low- risk agents for weight gain and cardiacmetabolic illness.
Monitoring and Managment
Baseline investigations :
Family h/o diabetes
BMI
Fasting TG levels (also monitored throughout treatment)
If raised : consider switching to another agent +/- lifestyle changes
For obese/ prediabetic/ diabetic pts :
Monitor BP
Fasting glucose
Waist circumference (before and after Rx)
Be vigilant for DKA/HHS
Sedation
ARIPIPRAZOLE KNOWN AS THIRD GENERATION ANTIPSYCHOTIC
THANK YOU
complete explanation with amicable pictures regarding CNS stimulants and cognitive enhancers.useful for both UG and PG students.references from different books and authors
The Muscarinic agonist and antagonist drugs from the ANS briefly described also structures of the drugs are mentioned. The important drug indications and their dosage are also mentioned. The receptor types with respect to cholinergic system explained how these receptors were discovered by which technique is also mentioned.