EPPP Biological Bases

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EPPP Biological Bases
2013-11-05 01:16:05

EPPP Biological Bases
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    • SSRI
    • SNRI
    • TCA
    • MAOI
  2. Serotonin-Norepinephrine Reuptake Inhibitors (SNRI)
    Work to increase both serotonergic and noradrenergic activity.

    • Effexor-venlafaxine
    • Cymbalta-duloxetine.

    SNRI's are used to treat anxiety disorders and neuropathic pain.
  3. Tricyclic Antidepressants (TCA)
    Thought to exert a general inhibitory effect on the reuptake of all monoamine neurotransmitters, including norepinephrine, dopamine, and serotonin. Due to their many side effects and dietary restrictions, TCA's are typically only prescribed if SSRI's are ineffective.

    • Tofranil-imipramine
    • Anafranil-clomipramine
  4. Monoamine Oxidase Inhibitors (MAOI)
    • -Inhibit the activity of monoamine oxidase, which breaks down monoamines and thereby increases serotonin, dopamine, and norepinephrine levels in the brain.
    • -Effective in the treatment of atypical depression.
    • -Because they cause more side effects and have more drug and dietary interactions than SSRIs and TCAs, they are typically reserved as last-option antidepressants.

    • Nardil-phenelzine
    • Parnate-tranylcypromine
    • Emsam-selegiline
    This is a useful sub-category of the main antidepressant list, emphasized because of their effects on obsessive thoughts via serotonergic action.

    It is mostly comprised of SSRIs and includes: Prozac, Zoloft, Paxil, Luvox, Celexa, Lexapro, and also the TCA Anafrenil
    This is a class of drugs commonly used to treat bipolar disorder. Anti-convulsants were traditionally manufactured for the treatment of epileptic seizures, but subsequently found useful also as mood stabilizers. Examples include: Eskalith and Lithonate (lithium carbonate), Symbiax (a synthesis of olanzapine and fluoxetine), Tegretol (carbamazepine), Trileptal (oxcarbazepine), Depakote (divalproex), Lamictal (lamotrigine), Topomax (topiramate), and Gabirtril (tiagabine).
    Widely used in the treatment of attention deficit disorders, this list includes Ritalin and Concerta (methylphenidate), Dexedrine (dextroamphetamine), and Adderall (d- and l- amphetamine).
    These medications are mainly used to treat psychotic illness; they can also be used as adjuncts for depressive disorders when appropriate. This class can be further divided in low and high potency, as well as typical (traditional) and atypical (newer).
  9. Low Potency antipsychotics
    Low Potency only means that a higher dosage is needed for the desired effect, and does not have to do with side effects and sedative power. Low Potency antipsychotics are known to have significant side effects and sedative power.
  10. Low Potency medications include:
    • Thorazine (chlorpromazine)
    • Mellaril (thioridazine)
    • Clozaril (Clozapine)
    • Seroquil (quietapine)
  11. High Potency medications include:
    • Loxitane (loxapine)
    • Stelazine (trifluoperazine)
    • Prolixin (fluphenazine)
    • Navane (thiothixene)
    • Haldol (Haloperidol)
    • Risperdal (risperidone)
    • Zyprexa (olanzapine)
    • Abilify (aripiprazole)
    This class of medications can be further divide into Benzodiazepines and Other Anti-Anxiety Agents. They are widely used to treat both anxiety and mood disorders, and can be adjuncts in antipsychotic regimes.
  13. Benzodiazepines
    • Valium (diazepam)
    • Librium (chlordiazepoxide)
    • Klonopin (clonazepam)
    • Ativan (lorazepan)
  14. Other anti-anxiety agents
    • BuSpar (buspirone)
    • Neurontin (gabapentin)
    • beta-blocker Inderol (propanolol)
    This class includes mostly "sleepers," such as Dalmane (flurazepam), Doral (quazepam), Restoril (temazepan), the newer Ambien (zolpidem), Sonata (zaleplan), and Lunesta (eszoplclone), as well as the antihistaminic Benadryl (diphenhydramine) for its sedative side effects.
    St. John's Wort: an herbal product shown to treat depression & anxiety
  17. Drug Formulation
    The pharmaceutical process by which certain chemical substances, including the active agent, are synthesized to produce the final drug.
  18. Drug Description
    Mainly the listing of chemical ingredients, with their dosages and formulas, that make up a specific drug.
  19. How do tricyclics work?
    They block the reuptake of serotonin and norepinephrine at the synapse
  20. Tricyclics are best for treating
    vegetative symptoms i.e., appetite and sleep issues, psychomotor retardation
  21. side effects of tricyclics
    dry mouth, constipation, urinary retention, blurred vision, and nasal congestion
  22. overdose of tricyclics
    cardiac arrythmia, sudden death
  23. How do SSRI's work?
    increase the availability of serotonin at the synapse by inhibiting reuptake
  24. side effects of SSRI's
    G.I. problems, sexual dysfunction, headaches, motor restlessness
  25. MAOI's are best for treating
    atypical depression: increased, hypersomnia, mood reactivity, rejection sensitivity, accompanying anxiety
  26. Side effects of MAOI's
    hypotension, dizziness, dry mouth, nausea, weight gain, blurred vision Most serious is a hypertensive crisis if taken with other drugs or food with the amino-acid tyramine
  27. Treatment of choice for bipolar
  28. How does lithium work?
    It may reduce post-synaptic responsivity to dopamine and norepinephrine
  29. Side effects of lithium
    gastric distress, weight gain, tremor, fatigue, confusion 35% will have tremor in fingers. It can be toxic or deadly.
  30. Tegretol/carbamazepine
    effective for maina, especially rapid cycling; faster onset than lithium
  31. Side effects of Tegretol/carbamazepine
    lethargy, tremor, ataxia, visual disturbances
  32. How do antipsychotics work?
    They block dopamine receptors in the brain
  33. What are side effects of antipsychotics
    anticholinergic: dry mouth, blurred vision, tachycardia, gastric
  34. Extrapyramidal
    Parkinsonism, akathisia, dystonia, tardive dyskinesia
  35. akathisia
    motor restlessness such as fidgeting, rocking, or pacing due to the neuromuscular or neurologic adverse effects associated with the use of antipsychotics
  36. dystonia
    "a syndrome of sustained muscle contractions, frequently causing twisting and repetitive movements or abnormal postures." Differences in the extent & severity of muscle and frequency of symptom involvement range from intermittent contraction limited to a single body region to generalized dystonia involving the limbs & axial muscles. Features such as age of onset and presumed etiology play a tremendous role in prognosis & treatment. A younger age of onset associated with a more generalized and severe course in primary dystonias.
  37. ataxia
    Inability to coordinate muscle activity during voluntary movements, resulting in shaky/tremor-like movements
    Anti anxiety drugs which include Diazepam (Valium), alprozolam (Xanax), Clonozepam (Klonopin), Lorazepam (Ativan) they are used to treat GAD, panic, insomnia, alcohol withdrawal, epilepsy
  39. How do benzodiazepines work
    it enhances GABA which inhibits the CNS
  40. Benzodiazepine withdrawal
    is similar to alcohol withdrawal syndrome and barbiturate withdrawal syndrome and can in severe cases provoke life threatening withdrawal symptoms such as seizures; protracted withdrawal symptoms include anxiety, irritability, insomnia and sensory disturbances.
  41. Pharmacotherapeutics
    The general study of the therapeutic uses of drugs.
  42. Bioavailability
    The portion of a drug that reaches the blood, or the physiological availability of a given amount of a drug, versus its chemical potency. It is a main principle of pharmacokinetics.
  43. Pharmacokinetics (PK)
    Is both a biochemical process and a branch of pharmacology; as a process, it can be defined as, "the change over time of the blood levels of a drug following administration." As a field of study, it is concerned with "how the body absorbs, distributes, breaks down, & eliminate drugs. PK involves the use and application of chemical & mathematical formulas.
  44. Purposes of Pharmacokinetics (PK)
    1. study the course of a drug over time, in relation to its absorption by the body, distribution, metabolism and excretion.
  45. Difference between Pharmacokinetics (PK) & Pharmacodynamics (PD)
    PK entails what the body does to the drug, while PD is what the drug does to the body
  46. Pharmacometrics (PM)
    Involves quantitative analysis and interpretation in relation to the effects of drugs in preclinical and clinical trials. Quantitative analysis and interpretation based on PK and PD
  47. anticholinergic side effects
    dry mouth, urinary retention, constipation, and blurred vision.
  48. The "catecholamine hypothesis" predicts that drugs which _______________ will alleviate depression.
    maintain or increase norepinephrine levels
  49. Wellbutrin
  50. athetosis
    refers to slow, uncoordinated, and involuntary movements of the extremities.
  51. akathisia
    an inability to sit or stand motionless along with a feeling of restlessness.
  52. akinesia
    Complete or almost complete loss of movement; associated with several disorders including stroke and Parkinson's disease