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Questions and Answers
What is a potential negative effect of the treatment mentioned?
What is a potential negative effect of the treatment mentioned?
Which of the following is not listed as an adverse reaction to the treatment?
Which of the following is not listed as an adverse reaction to the treatment?
What type of reaction can result from the treatment as noted?
What type of reaction can result from the treatment as noted?
Which of the following is likely to occur as a result of the treatment?
Which of the following is likely to occur as a result of the treatment?
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Which of the following symptoms may indicate an adverse reaction?
Which of the following symptoms may indicate an adverse reaction?
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What is the primary storage location of serotonin in the human body?
What is the primary storage location of serotonin in the human body?
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Which enzyme is responsible for converting tryptophan to hydroxytryptophan?
Which enzyme is responsible for converting tryptophan to hydroxytryptophan?
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What is another name for 5-hydroxytryptamine?
What is another name for 5-hydroxytryptamine?
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In which of the following locations is 10% of serotonin stored?
In which of the following locations is 10% of serotonin stored?
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Which type of receptors does serotonin primarily act on?
Which type of receptors does serotonin primarily act on?
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What is the primary purpose of the medication discussed?
What is the primary purpose of the medication discussed?
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Which of the following is NOT a common adverse reaction associated with this medication?
Which of the following is NOT a common adverse reaction associated with this medication?
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Which of the following adverse reactions could lead to impaired motor skills?
Which of the following adverse reactions could lead to impaired motor skills?
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Which of these adverse reactions is least likely to occur while using the medication?
Which of these adverse reactions is least likely to occur while using the medication?
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What condition is specifically mentioned as being treated with this medication?
What condition is specifically mentioned as being treated with this medication?
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Which of the following drugs is a selective 5-HT3 antagonist?
Which of the following drugs is a selective 5-HT3 antagonist?
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What is the primary use of Prochlorperazine and Haloperidol in the context of schizophrenia?
What is the primary use of Prochlorperazine and Haloperidol in the context of schizophrenia?
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Which statement is true regarding the drugs Granisetron and Tropisetron?
Which statement is true regarding the drugs Granisetron and Tropisetron?
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In what scenario might Prochlorperazine and Haloperidol be utilized?
In what scenario might Prochlorperazine and Haloperidol be utilized?
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Which medication mentioned is NOT a selective 5-HT3 antagonist?
Which medication mentioned is NOT a selective 5-HT3 antagonist?
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Which receptor does Ketanserin primarily block?
Which receptor does Ketanserin primarily block?
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What type of medication is Clozapine classified as?
What type of medication is Clozapine classified as?
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Which of the following receptors does Ketanserin have negligible action on?
Which of the following receptors does Ketanserin have negligible action on?
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Which receptors are blocked by Clozapine?
Which receptors are blocked by Clozapine?
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How does Ketanserin's action on serotonin receptors compare to that of Clozapine?
How does Ketanserin's action on serotonin receptors compare to that of Clozapine?
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Study Notes
Serotonin (5-HT) Synthesis
- Tryptophan is converted to hydroxytryptophan by hydroxylase.
- Hydroxytryptophan is then converted to 5-hydroxytryptamine (5-HT) by decarboxylase.
Serotonin Storage and Function
- 90% of serotonin is stored in entrochromaffin cells of the gastrointestinal tract (GIT)
- 10% of serotonin is stored in platelets and inside vesicles in nerve endings
- Serotonin acts on several types of receptors, mainly located in the central nervous system (CNS)
Clinical Applications of Serotonin
- Serotonin is used to relieve itching associated with skin disorders such as allergic dermatitis.
- Serotonin has no effect in treating acute attacks of schizophrenia and may worsen the condition.
5-HT3 Antagonists
- 5-HT3 antagonists are used to treat nausea and vomiting
- Examples of 5-HT3 antagonists include Granisetron and Tropisetron.
Anti-5-HT Activity
- Prochlorperazine and haloperidol exhibit anti-5-HT activity and are sometimes used for resistant acute attacks of schizophrenia.
5-HT2 Receptor Blocking
- Ketanserin selectively blocks 5-HT2 receptors with negligible action on other 5-HT receptors.
Atypical Antipsychotics
- Clozapine, an atypical antipsychotic, acts as both a 5-HT6 and 5-HT7 blocker.
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Description
This quiz covers the synthesis, storage, and clinical applications of serotonin (5-HT). It explores the biochemical pathways involving tryptophan and the role of serotonin in the gastrointestinal tract and central nervous system. Additionally, it discusses 5-HT3 antagonists and their therapeutic uses.
