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Details for Patent: 7,056,686

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Details for Patent: 7,056,686

Title:Method of diagnosing fibromyalgia caused by small intestinal bacterial overgrowth
Abstract: Disclosed is a method of diagnosing irritable bowel syndrome, fibromyalgia, chronic fatigue syndrome, depression, attention deficit/hyperactivity disorder, autoimmune diseases, such as multiple sclerosis and systemic lupus erythematosus, or Crohn's disease, which involves detecting the presence of small intestinal bacterial overgrowth (SIBO) in a human subject having at least one symptom associated with a suspected diagnosis of any of those diagnostic categories. Also disclosed is a method of treating these disorders, and other disorders caused by SIBO, that involves at least partially eradicating a SIBO condition in the human subject. The method includes administration of anti-microbial or probiotic agents, or normalizing intestinal motility by employing a prokinetic agent. The method improves symptoms, including hyperalgesia related to SIBO and disorders caused by SIBO. Also disclosed is a kit for the diagnosis or treatment of irritable bowel syndrome, fibromyalgia, chronic fatigue syndrome, depression, attention deficit/hyperactivity disorder, autoimmune diseases, or Crohn's disease.
Inventor(s): Lin; Henry C. (Manhattan Beach, CA), Pimentel; Mark (Los Angeles, CA)
Assignee: Cedars-Sinai Medical Center (Los Angeles, CA)
Filing Date:Aug 10, 2004
Application Number:10/915,193
Claims:1. A method of diagnosing fibromyalgia, comprising: detecting the presence of small intestinal bacterial overgrowth in a human subject having at least one symptom associated with a suspected diagnosis of fibromyalgia, whereby the suspected diagnosis of fibromyalgia is corroborated by the presence of small intestinal bacterial overgrowth.

2. The method of claim 1, wherein detecting the presence of small intestinal bacterial overgrowth is accomplished by analyzing the content of a gas mixture, said gas mixture being at least partially produced by the intestinal microflora of said human subject and being exhaled by said human subject after ingesting a controlled quantity of a substrate.

3. The method of claim 2, wherein the substrate is a sugar selected from the group consisting of an isotope-labeled sugar, a sugar that is incompletely digested by a human, and combinations thereof.

4. The method of claim 3, wherein the sugar is selected from the group consisting of glucose, lactose, lactulose, xylose and combinations thereof.

5. The method of claim 2, wherein analyzing the content of the gas mixture further includes analyzing the content of methane, carbon dioxide, hydrogen or combinations thereof contained in the gas mixture.

6. The method of claim 2, wherein analyzing the exhaled gas mixture is accomplished by a method selected from the group consisting of gas chromatography, mass spectrometry and radiation detection.

7. The method of claim 3, wherein the sugar is an isotope-labeled sugar, and analyzing the exhaled gas mixture is accomplished by mass spectrometry or radiation detection.

8. The method of claim 1, wherein detecting the presence of small intestinal bacterial overgrowth is accomplished by intestinal sampling from the human subject.

9. The method of claim 8, wherein the sampling is of cellular, fluid, fecal, or gaseous matter, or combinations thereof, contained by the intestinal lumen, comprising part of the lumenal wall, or both.

10. A method of diagnosing fibromyalgia, comprising: detecting by analyzing the content of a gas mixture, the presence of small intestinal bacterial overgrowth in a human subject having at least one symptom associated with a suspected diagnosis of fibromyalgia, said gas mixture being at least partially produced by the intestinal microflora of said human subject and being exhaled by said human subject after ingesting a controlled quantity of a substrate, whereby the suspected diagnosis of fibromyalgia is corroborated by the presence of small intestinal bacterial overgrowth.

11. The method of claim 10, wherein the substrate is a sugar selected from the group consisting of an isotope-labeled sugar, a sugar that is incompletely digested by a human, and combinations thereof.

12. The method of claim 11, wherein the sugar is selected from the group consisting of glucose, lactose, lactulose, xylose and combinations thereof.

13. The method of claim 10, wherein analyzing the content of the gas mixture further includes analyzing the content of methane, carbon dioxide, hydrogen or combinations thereof contained in the gas mixture.

14. The method of claim 10, wherein analyzing the exhaled gas mixture is accomplished by a method selected from the group consisting of gas chromatography, mass spectrometry and radiation detection.

15. The method of claim 11, wherein the sugar is an isotope-labeled sugar, and analyzing the exhaled gas mixture is accomplished by mass spectrometry or radiation detection.
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