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Details for Patent: 7,615,207

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Details for Patent: 7,615,207

Title:Methods for treating irritable bowel syndrome
Abstract: Disclosed is a method of manipulating the rate of upper gastrointestinal transit of a substance in a mammal. Also disclosed are methods of manipulating satiety and post-prandial visceral blood flow. A method of treating visceral pain or visceral hypersensitivity in a human subject is also described. A method for prolonging the residence time of an orally or enterally administered substance by promoting its dissolution, bioavailability and/or absorption in the small intestine is also described. These methods are related to a method of transmitting to and replicating at a second location in the central nervous system a serotonergic neural signal originating at a first location in the proximal or distal gut of a mammal and/or a method of transmitting to and replicating at a second location in the upper gastrointestinal tract a serotonergic neural signal originating at a first location in the proximal or distal gut.
Inventor(s): Lin; Henry C. (Manhattan Beach, CA)
Assignee: Cedars-Sinai Medical Center (Los Angeles, CA)
Filing Date:Feb 09, 2007
Application Number:11/673,488
Claims:1. A method of treating diarrhea-predominant irritable bowel syndrome in a mammalian subject comprising administering a peptide YY (PYY) to said mammalian subject, whereby intestinal transit of said subject is slowed by the action of said PYY.

2. The method of claim 1, wherein said subject is a human.

3. The method of claim 2, wherein said PYY is administered mucosally.

4. The method of claim 3, wherein said PYY is administered orally.

5. The method of claim 1, wherein said PYY is administered parenterally.

6. A method for treating diarrhea-predominant irritable bowel syndrome in a human subject comprising parenterally administering to said subject a peptide YY (PYY) at a dose of from about 0.5 to about 500 picomoles/kg weight of the subject, whereby intestinal transit of said subject is slowed by the action of said PYY.

7. A method of slowing the rate of upper gastrointestinal transit of a substance in a mammal comprising administering a peptide YY (PYY) to said mammal, whereby intestinal transit of said mammal is slowed by the action of said PYY.

8. A method of delaying gastric emptying in a mammal comprising administering a peptide YY (PYY) to said mammal, whereby intestinal transit of said mammal is slowed by the action of said PYY.

9. A method of treating diarrhea-predominant irritable bowel syndrome by manipulating the rate of upper gastrointestinal transit of a substance in a mammal having an intrinsic cholinergic afferent neural pathway projecting from a peptide YY-sensitive primary sensory neuron in the intestinal wall to a prevertebral celiac ganglion and having an adrenergic efferent neural pathway projecting from said ganglion to one or more enterochromaffin cells in the intestinal mucosa and/or to a serotonergic interneuron linked in a myenteric plexus and/or submucous plexus to an opioid interneuron, said opioid interneuron also being linked by an intestino-fugal opioid pathway projecting to said ganglion, with one or more neural connections to the central nervous system and back to the gut projecting from the ganglion, said method comprising: providing a pharmaceutically acceptable composition, comprising a peptide YY (PYY); and administering the pharmaceutically acceptable composition to the mammal, said PYY being delivered in an amount and under conditions such that the cholinergic intestino-fugal pathway, at least one prevertebral ganglionic pathway, the adrenergic efferent neural pathway, the serotonergic interneuron and/or the opioid interneuron are activated by the action of said PYY, whereby the rate of gastrointestinal transit is slowed by the action of said PYY.

10. The method of claim 9, wherein administering the pharmaceutically acceptable composition to the mammal further comprises administering the pharmaceutically acceptable composition by a delivery route selected from the group consisting of oral, intravenous, intraperitoneal, and nasal.

11. A method of treating diarrhea-predominant irritable bowel syndrome in a human subject having a cholinergic afferent neural pathway projecting from a peptide YY-sensitive primary sensory neuron in the intestinal wall to a prevertebral celiac ganglion and having a adrenergic efferent neural pathway projecting from said ganglion to one or more enterochromaffin cells in the intestinal mucosa and/or to a serotonergic interneuron linked in a myenteric plexus to an opioid interneuron, said opioid interneuron also being linked by an intestino-fugal opioid pathway projecting to said ganglion, with one or more neural connections to the central nervous system and back to the gut projecting from the ganglion, said method comprising: providing a pharmaceutically acceptable composition, comprising a peptide YY (PYY); and administering the pharmaceutically acceptable composition to the human subject, said PYY being delivered in an amount and under conditions such that the cholinergic intestino-fugal pathway, one or more prevertebral ganglionic pathways, a gangalion to central nervous system pathway, the adrenergic efferent neural pathway, the serotonergic interneuron and/or the opioid interneuron is substantially reduced by the action of said PYY, whereby intestinal transit of said human subject is slowed by the action of said PYY.

12. The method of claim 11, wherein administering the pharmaceutically acceptable composition to the mammal further comprises administering the pharmaceutically acceptable composition by a delivery route selected from the group consisting of oral, intravenous, intraperitoneal, and nasal.
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