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AN  UPDATE  ON PSYCHOPHARMACOLOGY Prof. Dr. Haroon Rashid Chaudhry FACHARZT (Psych & Neurology) MRCPsych (London),  FACP (USA), FAPA (USA), FRCP (Ireland) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
ANTI-DEPRESSANTS
[object Object],[object Object],HISTORY
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NEUROTRANSMITTERS ADDRESSED TRICYCLIC ANTI- DEPRESSANTS (TCAS )
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],TCAs
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],TCAs
[object Object],[object Object],SEARCH  FOR  SAFER ANTIDEPRESSANTS EFFICACY vs. SAFETY =± TCAs  >TCAs
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],MONOAMINE OXIDASE INHIBITORS (MAOIs )
[object Object],[object Object],[object Object],[object Object],MAOIs
SINGLE NEUROTRANSMITTER ADDRESSED SEROTONIN
[object Object],[object Object],[object Object],[object Object],[object Object],SELECTIVE SEROTONIN REUPTAKE INHIBITORS (SSRIs)
SELECTIVE SEROTONIN REUPTAKE INHIBITORS (SSRIs) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SSRIs EFFICACY  vs.  SAFETY = TCAs  >TCAs
[object Object],[object Object],[object Object],IMPROVED  EFFICACY
SINGLE RECEPTOR SELECTIVITY SEROTONIN-REUPTAKE INHIBITORS/ RECEPTOR BLOCKERS TRAZODONE NEFAZODONE
EFFICACY  vs  SAFETY =TCAs  >>TCAs
[object Object],[object Object],[object Object],SINGLE  NEUROTRANSMITTER
SELECTIVE DOPAMINE REUPTAKE INHIBITORS  (SDRIs) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],DUAL ACTION READDRESSED  SNRIs ,[object Object],[object Object]
EFFICACY vs SAFETY ( =/>?TCAs  (>>TCAs)
[object Object],NASSA EFFICACY vs. SAFETY (=/> TCAs  (>>>TCAs)
MOOD STABLIZERS
HOW SHOULD WE DEFINE  A “MOOD STABILIZERS”? ,[object Object],[object Object]
MOOD STABILIZERS: POSSIBLE FEATURES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
EFFECTIVENESS OF POSSIBLE MOOD STABLIZERS Acute Acute Acute Maint- Mania Mixed Rapid  enance States Cyclers Lithium Yes No? No? Yes Valproate Yes Yes Yes Yes Carbamazepine (Yes) Yes Yes Yes Olanzapine/ Yes Yes Yes Pending* Clozapine * Open extension data positive for olanzapine
VALPROATE: AD EFFICACY ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
PRECIPITATION OF MOOD EPISODES Mania Depression Lithium No No Valproate No No Carbamazepine No No Olanzapine/ No No Clozapine Antidepressants Yes No Typial antipsychotics No Probable
EASE OF USE OF MOOD STABILIZERS Simple   Frequent Lab  Prescribing Monitoring Lithium No Yes Valproate Somewhat Somewhat Carbamazepine No Yes Olanzapine/ Yes No Clozapine No Yes
SIDE EFFECTS OF MOOD STABILIZERS Lithium Weight gain, tremor, Gl symptoms,     thyroid function, cognitive complaints Valproate Weight gain, (  thyroid function), Gl upset, pancreatitis, ? Polycystic ovaries Carbamazepine     WBC, rashes, nausea Olanzapine/ Weight gain, sedation ? Hyperglycemia Clozapine Weight gain, sedation, agranulocytosis,      salivation, ? hyperglycemia
OPTIMAL WORKING DEFINITION OF MOOD STABILIZER ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
PUTATIVE/INNOVATIVE MOOD STABILIZERS  FOR REFRACTORY BIPOLAR PATIENTS Anticonvulsants Ca2+Channel Blockers Gabapentin Verapamil Lamotrigine Nifedipine topiramate Nimodipine Tiagabine Acetazolamide
Atypical Antipsychotics  Hormonal Clozapine thyroxine Risperidone Estrogen/progesterone Olanzapine Tamoxifen Quetiapine (Ziprasidone) Other Tryptophan Choline Donepezil   Omega-3 fatty acids PUTATIVE/INNOVATIVE MOOD STABILIZERS  FOR REFRACTORY BIPOLAR PATIENTS
MOOD STABILIZER: MANIA ,[object Object],[object Object],[object Object],[object Object],[object Object]
MOOD STABILIZER: DEPRESSION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Lithium Divalproex Carbamazepine First Line Lamotrigine ?  Gabapentin Olanzapine Topiramate Efficacy in Depression Clinical Features ?
BIPOLAR DISORDERS: RELAPSE PREVENTION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
BIPOLAR RECURRENCE: CLINICAL EFFECTS ,[object Object],[object Object],[object Object],[object Object]
BIPOLAR RECURRENCE:  MEDICAL EFFECTS ,[object Object],[object Object]
BIPOLAR RECURRENCE:  PSYCHOSICAL EFFECTS ,[object Object],[object Object]
BIPOLAR RECURRENCE:  ECONOMIC EFFECTS ,[object Object],[object Object],[object Object]
BIPOLAR DISORDERS: RELAPSE PREVENTION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
PREDICTORS OF POOR LONG-TERM  RESPONSE WITH LITHIUM ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
PROBLEMS OF CURRENT MOOD STABILIZERS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
BIPOLAR DISORDERS: TREATMENTS THAT DECREASE RISK OF RECURRENCE ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],BIPOLAR DISORDERS: TREATMENTS THAT INCREASE RISK OF RECURRENCE
[object Object],[object Object],[object Object],[object Object],[object Object],BIPOLAR DISORDERS: Treatments Being Studied to Determine Risk of Recurrence
[object Object],[object Object],[object Object],[object Object],[object Object],GOALS OF PSYCHOEDUCATION IN BIPOLAR PATIENTS
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],PRINCIPLES OF BIPOLAR DISORDER
Case Vignette ,[object Object],[object Object],[object Object]
Case Vignette ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Case Vignette ,[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],MANIA WITH PSYCHOTIC SYMPTOMS
Rapid cycling 10 – 20% Mixed (dysphoric) 30 – 50% Pure mania 30 – 50%  VPA VPA Li, VPA Olanz, VPA ? GB BP II Dep Lamotrigine Not listed in DSM IV TR. Anxiety, Hostility, Impulsivity, Poor insight, Confusion, Memory impairment  Sensory hyper acuity Mania with psychotic  Features 25 – 75% Mood Stabilizer Combinations Phenomenological Domains
ANTI-ANXIETY DRUGS
a) BENZODIAZEPINES ,[object Object],[object Object],[object Object],b) NON BENZODIAZEPINES ,[object Object],[object Object]
BENZODIAZEPINES   PROS / CONS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
BENZODIAZEPINES A FRIEND FOE ? OR
History of Anxiolytic Development ALCOHOL  1903 - BARBITURATES 1950’s – NON BARBITURATES (Meprobamate) LATE 50’s - BENZODIAZEPINES   NONBENZODIAZEPINE HYPNOTICS GABA MIMETICS SELECTIVE GABA A TARGETS
SIX ISSUES ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],ISSUE  1
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],GABA BZD  IN  NEUROPSYCHIATRY
[object Object],[object Object],[object Object],[object Object],[object Object],GABA BZD  IN  NEUROPSYCHIATRY
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],GABA BZD  IN  NEUROPSYCHIATRY
[object Object],ISSUE  2
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],BENZODIAZEPINE  IN  PRACTICE
[object Object],ISSUE  3
[object Object],[object Object],[object Object],[object Object],[object Object],ISSUE  4
[object Object],[object Object],[object Object],BENZODIAZEPINE  AND  COGNITION
[object Object],[object Object],[object Object],[object Object],BENZODIAZEPINE  AND  COGNITION
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],BENZODIAZEPINE  DEPENDENCE
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],BENZODIAZEPINE  DEPENDENCE
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],BENZODIAZEPINE  DEPENDENCE
[object Object],[object Object],[object Object],[object Object],BENZODIAZEPINE  OVERDOSE CHANGING  ATTITUDE  TO  BZD
[object Object],[object Object],[object Object],[object Object],[object Object],CRITIQUE
[object Object],[object Object],[object Object],[object Object],[object Object],CRITIQUE
[object Object],ISSUE  5
[object Object],BASICS
[object Object],[object Object],[object Object],[object Object],[object Object],GABA  RECEPTOR
[object Object],[object Object],[object Object],BENZODIAZEPINE  RECEPTOR
BZD-2 receptors (Omega-2)   - caudate putamen, olfactory bulb, cerebral cortex, hippocampus and dentategyrus Related to cognitive, memory and psychomotor function. BZD-3(Omega-3) are not directly associated with GABA receptors or with chloride channels . They may regulate the synthesis of neuroactive steroids.  BENZODIAZEPINE  RECEPTOR
BDZ GABA Cl  Channel GABA  BENZODIAZEPINE  RECEPTOR
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],GABA RECEPTOR - SELECTIVITY Whiting PJ (2006) Curr Opinion Pharmacol 6: 24-29 Rudolf U & Mohler H (2006) Curr Opinion Pharmacol, 6:18-23
GABA  RECEPTOR
GABAergic System Morris B et al (2005) Current Opinion in Pharmacology 5 : 101 - 106  2 CCK/VIP+  1
GABAergic System
[object Object],[object Object],ISSUE  6 BALANCING THE OPTIONS
[object Object],[object Object],CONCLUSION
[object Object],CONCLUSION Don’t blame the machine If the driver is at fault
The most deserving six-letter word....... “ THANKS" for your patient listening.

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An update on psychopharmacology part i 22 june 2007 fountain house

  • 1.
  • 2.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 12.
  • 13.
  • 14. SSRIs EFFICACY vs. SAFETY = TCAs >TCAs
  • 15.
  • 16. SINGLE RECEPTOR SELECTIVITY SEROTONIN-REUPTAKE INHIBITORS/ RECEPTOR BLOCKERS TRAZODONE NEFAZODONE
  • 17. EFFICACY vs SAFETY =TCAs >>TCAs
  • 18.
  • 19.
  • 20.
  • 21. EFFICACY vs SAFETY ( =/>?TCAs (>>TCAs)
  • 22.
  • 24.
  • 25.
  • 26. EFFECTIVENESS OF POSSIBLE MOOD STABLIZERS Acute Acute Acute Maint- Mania Mixed Rapid enance States Cyclers Lithium Yes No? No? Yes Valproate Yes Yes Yes Yes Carbamazepine (Yes) Yes Yes Yes Olanzapine/ Yes Yes Yes Pending* Clozapine * Open extension data positive for olanzapine
  • 27.
  • 28. PRECIPITATION OF MOOD EPISODES Mania Depression Lithium No No Valproate No No Carbamazepine No No Olanzapine/ No No Clozapine Antidepressants Yes No Typial antipsychotics No Probable
  • 29. EASE OF USE OF MOOD STABILIZERS Simple Frequent Lab Prescribing Monitoring Lithium No Yes Valproate Somewhat Somewhat Carbamazepine No Yes Olanzapine/ Yes No Clozapine No Yes
  • 30. SIDE EFFECTS OF MOOD STABILIZERS Lithium Weight gain, tremor, Gl symptoms,  thyroid function, cognitive complaints Valproate Weight gain, (  thyroid function), Gl upset, pancreatitis, ? Polycystic ovaries Carbamazepine  WBC, rashes, nausea Olanzapine/ Weight gain, sedation ? Hyperglycemia Clozapine Weight gain, sedation, agranulocytosis,  salivation, ? hyperglycemia
  • 31.
  • 32. PUTATIVE/INNOVATIVE MOOD STABILIZERS FOR REFRACTORY BIPOLAR PATIENTS Anticonvulsants Ca2+Channel Blockers Gabapentin Verapamil Lamotrigine Nifedipine topiramate Nimodipine Tiagabine Acetazolamide
  • 33. Atypical Antipsychotics Hormonal Clozapine thyroxine Risperidone Estrogen/progesterone Olanzapine Tamoxifen Quetiapine (Ziprasidone) Other Tryptophan Choline Donepezil Omega-3 fatty acids PUTATIVE/INNOVATIVE MOOD STABILIZERS FOR REFRACTORY BIPOLAR PATIENTS
  • 34.
  • 35.
  • 36. Lithium Divalproex Carbamazepine First Line Lamotrigine ? Gabapentin Olanzapine Topiramate Efficacy in Depression Clinical Features ?
  • 37.
  • 38.
  • 39.
  • 40.
  • 41.
  • 42.
  • 43.
  • 44.
  • 45.
  • 46.
  • 47.
  • 48.
  • 49.
  • 50.
  • 51.
  • 52.
  • 53.
  • 54. Rapid cycling 10 – 20% Mixed (dysphoric) 30 – 50% Pure mania 30 – 50% VPA VPA Li, VPA Olanz, VPA ? GB BP II Dep Lamotrigine Not listed in DSM IV TR. Anxiety, Hostility, Impulsivity, Poor insight, Confusion, Memory impairment Sensory hyper acuity Mania with psychotic Features 25 – 75% Mood Stabilizer Combinations Phenomenological Domains
  • 56.
  • 57.
  • 59. History of Anxiolytic Development ALCOHOL 1903 - BARBITURATES 1950’s – NON BARBITURATES (Meprobamate) LATE 50’s - BENZODIAZEPINES NONBENZODIAZEPINE HYPNOTICS GABA MIMETICS SELECTIVE GABA A TARGETS
  • 60.
  • 61.
  • 62.
  • 63.
  • 64.
  • 65.
  • 66.
  • 67.
  • 68.
  • 69.
  • 70.
  • 71.
  • 72.
  • 73.
  • 74.
  • 75.
  • 76.
  • 77.
  • 78.
  • 79.
  • 80.
  • 81.
  • 82. BZD-2 receptors (Omega-2) - caudate putamen, olfactory bulb, cerebral cortex, hippocampus and dentategyrus Related to cognitive, memory and psychomotor function. BZD-3(Omega-3) are not directly associated with GABA receptors or with chloride channels . They may regulate the synthesis of neuroactive steroids. BENZODIAZEPINE RECEPTOR
  • 83. BDZ GABA Cl Channel GABA BENZODIAZEPINE RECEPTOR
  • 84.
  • 86. GABAergic System Morris B et al (2005) Current Opinion in Pharmacology 5 : 101 - 106  2 CCK/VIP+  1
  • 88.
  • 89.
  • 90.
  • 91. The most deserving six-letter word....... “ THANKS" for your patient listening.