WO1997017425A1 - Method and apparatus to determine paraffinophilic microorganisms - Google Patents
Method and apparatus to determine paraffinophilic microorganisms Download PDFInfo
- Publication number
- WO1997017425A1 WO1997017425A1 PCT/US1996/015318 US9615318W WO9717425A1 WO 1997017425 A1 WO1997017425 A1 WO 1997017425A1 US 9615318 W US9615318 W US 9615318W WO 9717425 A1 WO9717425 A1 WO 9717425A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- aqueous solution
- patient
- mycobacterium
- specimen
- adjusting
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
- C12Q1/04—Determining presence or kind of microorganism; Use of selective media for testing antibiotics or bacteriocides; Compositions containing a chemical indicator therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/81—Packaged device or kit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/8215—Microorganisms
- Y10S435/822—Microorganisms using bacteria or actinomycetales
- Y10S435/863—Mycobacterium
Definitions
- This invention relates to a method of identifying a paraffinophilic microorganism using various milieus and an associated apparatus and, more particularly, to a receptacle containing an aqueous solution that mimics the in vivo conditions of a patient.
- a paraffin coated slide is used to bait a paraffinophilic organism that can grow on the slide. The organism then can be identified by a number of different methods.
- United States Patent Nos. 5,153,119 and 5,316,918, the disclosures of which are incorporated by reference herein, disclose methods and apparatus for identifying and testing the antibiotic sensitivity of Mycobacterium avium-intracellulare ("MAI").
- MAI Mycobacterium avium-intracellulare
- Robert-A. Ollar was the named inventor on these patents.
- the method of identi ⁇ fying MAI includes placing a paraffin coated slide in a receptacle containing a sterile aqueous solution inoculated with a specimen from a patient and analyzing the slide after exposure to the specimen to determine the presence or absence of MAI.
- the analysis step involves performing a number of speciation assays, such as a tellurite reduction test.
- the method for testing the sensitivity of MAI to different antimicrobial agents and dosages thereof includes providing a plurality of test tubes adapted to contain an amount of an antimicrobial agent to be tested and MAI to be assayed and a separate paraffin coated slide adapted for placement in each of the test tubes.
- the inventions provide effective, efficient and economical methods for identifying MAI and testing MAI for antimicrobial agent sensitivity. These methods avoid the use of expensive, complicated equipment, and thus can be used in places such as field hospitals and third world locations where the more expensive and hard to use equipment is not available.
- the invention has met or surpassed the above-mentioned need as well as others.
- the method of determining the presence of a paraffinophilic microorganism in a specimen taken from a patient includes providing a receptacle containing an aqueous solution and adjusting the solution to mimic the in vivo clinical conditions of the patient.
- the method further includes inoculating the solution with the specimen and then placing in the receptacle a paraffin coated slide. The slide is then analyzed after exposure to the specimen to determine the presence or absence of the microorganism.
- the apparatus comprises a receptacle for holding an aqueous solution and a paraffin coated slide adapted to be placed in the receptacle.
- the apparatus further comprises means for adjusting the aqueous solution to mimic the in vivo clinical conditions of the patient.
- the term "patient' refers to a member of the animal kingdom, including human beings whose body specimen is being processed by the method and apparatus of the invention.
- paraffinophilic means an organism that can employ paraffin as a source of carbon in a basal salt media, devoid of other forms of carbon, the organism can be bacterial or fungal in nature.
- the method and apparatus of the invention provide an efficient, effective and economical way of identifying a paraffinophilic microorganism.
- a paraffinophilic microorganism identification apparatus 10 is shown.
- the apparatus 10 includes a standard test tube 12 which contains an aqueous solution 13 (such as distilled water) and a cotton plug 16 to seal the test tube 12.
- a specimen to be tested for the presence or absence of a paraffinophilic microorganism is inoculated into the aqueous solution 13.
- a slide 18, having a coating of paraffin 20 is then placed into the test tube 12.
- the aqueous solution 13 should not contain any carbon source, as it is desired to provide a sole carbon source on the slide in order to effectively grow the microorganism to be identified on the slide 18 and not in the aqueous solution 13.
- Growth on the paraffin coated slide 18 can be analyzed to determine the presence or absence of a paraffinophilic microorganism.
- Such tests to analyze the growth can include tests such as DNA hybridization or can be tests for specific paraffinophilic microorganisms, such as MAI, as is disclosed in United States Patent Nos. 5,153,119 and 5,316,918, the disclosures of which are specifically incorporated by reference herein.
- the specimen to be inoculated into the test tube 12 can be a blood sample; any biopsy or tissue specimen; stomach fluid; urine; cerebral spinal fluid; nasopharyngeal mucosa or saliva. These specimens can be obtained from the patient in the doctor's office or in the emergency room of a hospital, for example, by known techniques in known standard ways.
- the paraffin 20 included on the slide is used to bait the paraffinophilic microorganism.
- the paraffin can be used to bait MAI.
- the aqueous solution 13 should not contain any carbon source, as it is desired to provide a sole carbon source on the slide in order to effectively identify the microorganism.
- the aqueous solution 13 can be adjusted to mimic the in vivo "clinical conditions" of the patient.
- “clinical conditions” it is meant at least one of the following: (i) the pH of the in vivo milieu of the patient where the paraffinophilic microorganism can be found and (ii) the electrolyte levels of a patient's blood where paraffinophilic microorganisms can be found.
- Adjusting the aqueous solution can be effected by numerous different methods. Adjusting the pH of the aqueous solution can be accomplished by adding hydrochloric acid (HCl) to obtain a more acidic solution or by adding sodium hydroxide (NaOH) or potassium hydroxide (KOH) in order to obtain a more basic solution.
- HCl hydrochloric acid
- NaOH sodium hydroxide
- KOH potassium hydroxide
- Electrolytes such as one or more selected from the group consisting of sodium, potassium, chloride, magnesium, phosphate and calcium, can be added to the solution in desired quantities in order to mimic the electrolytes in the blood of a patient from which a blood sample which may contain the microorganism is obtained.
- Paraffinophilic microorganisms that can be identified using the method of the invention include at least one of the paraffinophilic microorganisms selected from the group consisting of Micrococcus Paraffinae; Corynebacterium
- Mycobacterium Phlei . Mycobacterium Phlei , M. Smegmatis;
- Mycobacterium Testudo Mycobacterium-Avium-Intracellulare
- Nocardia Spp. Actinomyces; Candida Lipolytica; Candida Tropicalis, Torulopsis Colliculo ⁇ a; Monila Sp . , Hansenula Sp . ,
- Torula rossa Penicillium Sp. ; IHNL . Aspergillus Flavus;
- Scopulariop ⁇ is Sp. ; Pseudomonas Fluorescens Liquefaciens;
- An AIDS patient comes to an emergency room at a hospital complaining of severe abdominal pain.
- a gastroenterologist uses a gastrointestinal scope to obtain a specimen of the patient's stomach fluid.
- the scope indicates that the pH in the patient's stomach is 1.5.
- a lab technician using the apparatus of the Figure adjusts the pH of the aqueous solution 13 by adding HCl thereto so that the aqueous solution 13 has a pH of 1.5.
- the pH in the patient's stomach is mimicked by the pH of the aqueous solution in the apparatus shown in the Figure.
- the specimen of stomach fluid taken by the gastroenterologist from the patient is inoculated into the receptacle 12 holding a paraffin coated slide 18. After about eight days a growth appears on the paraffin coated slide 18.
- the growth is then analyzed by the method and apparatus disclosed in United States Patent No. 5,153,119 to determine whether MAI is present.
- EXAMPLE2 An AIDS patient comes to an emergency room complaining of high fever and apparently has pneumonia. The physician suspects that there is an infection caused by Nocardia bactereremia .
- a chemical screen (“CSS") is performed on a blood specimen obtained from the patient.
- the CSS lists the electrolyte content of the patient's blood.
- the electrolyte content is communicated to a lab technician who in turn adjusts the aqueous solution 13 in the receptacle 12 holding the paraffin coated slide 18.
- the CSS reveals that the patient has a sodium level of 120.
- the lab technician adjusts the sodium level of the aqueous solution (for example, distilled water) by adding sodium thereto in order to mimic the 120 level of sodium found in the patient's blood.
- the blood specimen is then inoculated into the adjusted aqueous solution. After about two days a growth appears. The growth is analyzed and is found to be, indeed, Nocardia bactereremia .
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU71661/96A AU7166196A (en) | 1995-11-09 | 1996-09-25 | Method and apparatus to determine paraffinophilic microorganisms |
CA 2237166 CA2237166A1 (en) | 1995-11-09 | 1996-09-25 | Method and apparatus to determine paraffinophilic microorganisms |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/555,734 | 1995-11-09 | ||
US08/555,734 US5707824A (en) | 1995-11-09 | 1995-11-09 | Method of determining the presence or absence of a paraffinophilic microorganism |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997017425A1 true WO1997017425A1 (en) | 1997-05-15 |
Family
ID=24218407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1996/015318 WO1997017425A1 (en) | 1995-11-09 | 1996-09-25 | Method and apparatus to determine paraffinophilic microorganisms |
Country Status (4)
Country | Link |
---|---|
US (2) | US5707824A (en) |
AU (1) | AU7166196A (en) |
WO (1) | WO1997017425A1 (en) |
ZA (1) | ZA962160B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5854013A (en) * | 1995-09-14 | 1998-12-29 | Infectech, Inc. | Method of determining the presence or absence of a nonparaffinophilic microorganism in a specimen |
ZA962161B (en) * | 1995-11-09 | 1996-09-26 | Infectech Inc | Method for determining the antimicrobial agent sensitivity of a paraffinophilic microorganism using various milieus and an associated apparatus |
US5891662A (en) * | 1997-11-13 | 1999-04-06 | Infectech, Inc. | Method for determining the antimicrobial agent sensitivity of a nonparaffinophilic hydrophobic microorganism |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5153119A (en) * | 1989-10-24 | 1992-10-06 | Infectech Inc. | Method for speciating and identifying mai (mycobacterium avium-intracellulare) |
US5316918A (en) * | 1989-10-24 | 1994-05-31 | Infectech, Inc. | Method and apparatus for testing MAI (mycobacterium avium-intracellulare) for antimicrobial agent sensitivity |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3826717A (en) * | 1973-02-26 | 1974-07-30 | V Gilbert | Quantitative antibiotic test container |
US4683201A (en) * | 1984-10-09 | 1987-07-28 | Eli Lilly And Company | Antibiotic A80190-producing Actinomadura oligospora and process |
US4692407A (en) * | 1985-01-31 | 1987-09-08 | Forsyth Dental Infirmary For Children | Method for the determination of Streptococcus mutans |
US4683195A (en) * | 1986-01-30 | 1987-07-28 | Cetus Corporation | Process for amplifying, detecting, and/or-cloning nucleic acid sequences |
US4683202A (en) * | 1985-03-28 | 1987-07-28 | Cetus Corporation | Process for amplifying nucleic acid sequences |
US5639675A (en) * | 1995-11-09 | 1997-06-17 | Infectech, Inc. | Method of identifying a nonparaffinophilic microorganism using various milieus and an associated apparatus |
US5641645A (en) * | 1995-11-09 | 1997-06-24 | Infectech, Inc. | Method for determining the antimicrobial agent sensitivity of a nonparaffinophilic microorganism using various milieus and an associated apparatus |
-
1995
- 1995-11-09 US US08/555,734 patent/US5707824A/en not_active Expired - Lifetime
-
1996
- 1996-03-18 ZA ZA962160A patent/ZA962160B/en unknown
- 1996-09-25 WO PCT/US1996/015318 patent/WO1997017425A1/en active Application Filing
- 1996-09-25 AU AU71661/96A patent/AU7166196A/en not_active Abandoned
-
1997
- 1997-09-29 US US08/939,793 patent/US5882920A/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5153119A (en) * | 1989-10-24 | 1992-10-06 | Infectech Inc. | Method for speciating and identifying mai (mycobacterium avium-intracellulare) |
US5316918A (en) * | 1989-10-24 | 1994-05-31 | Infectech, Inc. | Method and apparatus for testing MAI (mycobacterium avium-intracellulare) for antimicrobial agent sensitivity |
US5472877A (en) * | 1989-10-24 | 1995-12-05 | Infectech, Inc. | Apparatus for determining the presence or absence of MAI (Mycobacterium avium-intacellulars) |
Also Published As
Publication number | Publication date |
---|---|
AU7166196A (en) | 1997-05-29 |
US5707824A (en) | 1998-01-13 |
ZA962160B (en) | 1996-09-26 |
US5882920A (en) | 1999-03-16 |
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