Patents by Inventor Laurent Poirel

Laurent Poirel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200407770
    Abstract: The present invention relates to a method for detecting the presence of expanded-spectrum ?-lactamase (?-lactamase hydrolyzing expanded-spectrum cephalosporin)-producing bacteria in a sample, said method comprising the steps of: a) performing cell lysis on a test sample in order to obtain an enzymatic suspension; b) reacting a fraction of the enzymatic suspension obtained in step a) with a reagent kit, said reagent kit comprising—expanded-spectrum ?-lactamase substrate selected from the group consisting of cephalosporins, aztreonam, and cephamycins, —a pH color indicator which will change color when the pH of the reaction mixture is comprised between 6.4 and 8.4, wherein a color change after step b) indicates the presence of expanded-spectrum ?-lactamase-producing bacteria in the test sample. The invention also relates to a reagent kit, to a microtiter plate and to their uses in detecting the presence of expanded-spectrum ?-lactamase producers in a test sample.
    Type: Application
    Filed: September 3, 2020
    Publication date: December 31, 2020
    Inventors: Patrice NORDMANN, Laurent DORTET, Laurent POIREL
  • Patent number: 10793892
    Abstract: The present invention relates to a method for detecting the presence of expanded-spectrum ß-lactamase (ß-lactamase hydrolyzing expanded-spectrum cephalosporin)-producing bacteria in a sample, said method comprising the steps of: a) performing cell lysis on a test sample in order to obtain an enzymatic suspension; b) reacting a fraction of the enzymatic suspension obtained in step a) with a reagent kit, said reagent kit comprising —expanded-spectrum ß-lactamase substrate selected from the group consisting of cephalosporins, aztreonam, and cephamycins, —a pH color indicator which will change color when the pH of the reaction mixture is comprised between 6.4 and 8.4, wherein a color change after step b) indicates the presence of expanded-spectrum ß-lactamase-producing bacteria in the test sample. The invention also relates to a reagent kit, to a microtiter plate and to their uses in detecting the presence of expanded-spectrum ß-lactamase producers in a test sample.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: October 6, 2020
    Assignees: INSERM (INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE), UNIVERSITÉ PARIS-SACLAY, ASSISTANTE PUBLIQUE HOPITAUX DE PARIS (APHP)
    Inventors: Patrice Nordmann, Laurent Dortet, Laurent Poirel
  • Patent number: 10745733
    Abstract: The present invention concerns a kit and methods for the detection of absence or presence of a ?-lactamase, for example a penicillinase, in a sample comprising or derived from a body fluid taken from a patient suffering from an infection. In some embodiments, the goal of the invention is to rapidly identify infections which can be treated effectively with a penicillin compound. The invention contributes to slowing down the occurrence of resistances to last generation antibiotics. This is achieved by using penicillin compounds for treating infections whenever this can be done efficiently. In brief, the present invention provides a tool for maximizing the use and efficiency of penicillin antibiotics. In other embodiments, the test kit of the invention can be used to detect cephalosporinases (including ESBLs) or carbapenemases.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: August 18, 2020
    Assignee: UNIVERSITE DE FRIBOURG
    Inventors: Patrice Nordmann, Laurent Poirel, Nicolas Kieffer
  • Publication number: 20190249218
    Abstract: The present invention concerns a method, a test kit and a culture medium for testing for Gram negative bacteria exhibiting multiple resistance to aminoglycoside antibiotics, wherein the method, test kit and culture medium detect resistance conferred by the presence of 16S rRNA methylase while discriminating against aminoglycoside resistance due to other narrow-spectrum mechanisms.
    Type: Application
    Filed: October 16, 2017
    Publication date: August 15, 2019
    Inventors: Patrice Nordmann, Laurent Poirel
  • Publication number: 20180282778
    Abstract: The present invention concerns a kit and methods for the detection of absence or presence of a ?-lactamase, for example a penicillinase, in a sample comprising or derived from a body fluid taken from a patient suffering from an infection. In some embodiments, the goal of the invention is to rapidly identify infections which can be treated effectively with a penicillin compound. The invention contributes to slowing down the occurrence of resistances to last generation antibiotics. This is achieved by using penicillin compounds for treating infections whenever this can be done efficiently. In brief, the present invention provides a tool for maximizing the use and efficiency of penicillin antibiotics. In other embodiments, the test kit of the invention can be used to detect cephalosporinases (including ESBLs) or carbapenemases.
    Type: Application
    Filed: October 7, 2016
    Publication date: October 4, 2018
    Inventors: Patrice Nordmann, Laurent Poirel, Nicolas Kieffer
  • Publication number: 20170073733
    Abstract: The present invention relates to a carbapenemase and methods using said carbapenemase such as detection methods, screening methods, predictive methods and therapeutic uses.
    Type: Application
    Filed: March 6, 2015
    Publication date: March 16, 2017
    Inventors: Patrice NORDMANN, Laurent POIREL, Laurent DORTET
  • Patent number: 9340819
    Abstract: The present invention relates to a method for detecting the presence of carbapenemase-producing bacteria in a sample, said method comprising the steps of: a) performing cell lysis on a test sample in order to obtain an enzymatic suspension; b) reacting a fraction of the enzymatic suspension obtained in step a) with a reagent kit, said reagent kit comprising —a carbapenemase substrate selected from the group consisting of carbapenems and cephamycins, —a pH color indicator which will change color when the pH of the reaction mixture is comprised between 6.4 and 8.4, wherein a color change after step b) indicates the presence of carbapenemase-producing bacteria in the test sample. The invention also relates to a reagent kit, to a microtiter plate and to their uses in detecting the presence of carbapenemase producers in a test sample.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: May 17, 2016
    Assignees: INSERM (INSITUT NATIONAL de la SANTE ET de la RECHERCHE MEDICALE), ASSISTANCE PUBLIQUE HOPITAUX de PARIS, UNIVERSITE PARIS SUD (PARIS 11)
    Inventors: Laurent Dortet, Patrice Nordmann, Laurent Poirel
  • Patent number: 9328374
    Abstract: The present invention relates to a culture medium comprising a carbapenem, a carbapenemase activator and a M-type penicillin. It also relates to a method for detecting carbapenem-resistant bacteria in a test sample using said culture medium.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: May 3, 2016
    Assignees: Institut National de la Sante et de la Recherche Medicale (INSERM), UNIVERSITE PARIS SUD, ASSISTANCE PUBLIQUE HOPITAUX DE PARIS
    Inventors: Patrice Nordmann, Laurent Poirel, Delphine Girlich
  • Publication number: 20140308693
    Abstract: The present invention relates to a method for detecting the presence of expanded-spectrum ?-lactamase (?-lactamase hydrolyzing expanded-spectrum cephalosporin)-producing bacteria in a sample, said method comprising the steps of: a) performing cell lysis on a test sample in order to obtain an enzymatic suspension; b) reacting a fraction of the enzymatic suspension obtained in step a) with a reagent kit, said reagent kit comprising—expanded-spectrum ?-lactamase substrate selected from the group consisting of cephalosporins, aztreonam, and cephamycins, —a pH color indicator which will change color when the pH of the reaction mixture is comprised between 6.4 and 8.4, wherein a color change after step b) indicates the presence of expanded-spectrum ?-lactamase-producing bacteria in the test sample. The invention also relates to a reagent kit, to a microtiter plate and to their uses in detecting the presence of expanded-spectrum ?-lactamase producers in a test sample.
    Type: Application
    Filed: November 16, 2012
    Publication date: October 16, 2014
    Inventors: Patrice Nordmann, Laurent Dortet, Laurent Poirel
  • Publication number: 20140178922
    Abstract: The present invention relates to a culture medium comprising a carbapenem, a carbapenemase activator and a M-type penicillin. It also relates to a method for detecting carbapenem-resistant bacteria in a test sample using said culture medium.
    Type: Application
    Filed: July 5, 2012
    Publication date: June 26, 2014
    Applicants: UNIVERSITE PARIS SUD (PARIS 11), Institut National de la Sante et de la Recherche Medicale (INSERM), ASSISTANCE PUBLIQUE HOPITAUX DE PARIS
    Inventors: Delphine Girlich, Laurent Poirel, Patrice Nordmann
  • Publication number: 20140134656
    Abstract: The present invention relates to a method for detecting the presence of carbapenemase-producing bacteria in a sample, said method comprising the steps of: a) performing cell lysis on a test sample in order to obtain an enzymatic suspension; b) reacting a fraction of the enzymatic suspension obtained in step a) with a reagent kit, said reagent kit comprising —a carbapenemase substrate selected from the group consisting of carbapenems and cephamycins, —a pH color indicator which will change color when the pH of the reaction mixture is comprised between 6.4 and 8.4, wherein a color change after step b) indicates the presence of carbapenemase-producing bacteria in the test sample. The invention also relates to a reagent kit, to a microtiter plate and to their uses in detecting the presence of carbapenemase producers in a test sample.
    Type: Application
    Filed: June 21, 2012
    Publication date: May 15, 2014
    Applicants: ASSISTANCE PUBLIQUE HOPITAUX DE PARIS, INSERM (INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE), UNIVERSITE PARIS SUD (PARIS 11)
    Inventors: Laurent Dortet, Patrice Nordmann, Laurent Poirel
  • Publication number: 20120219952
    Abstract: The present invention relates to a carbapenemase and methods using said carbapenemase such as screening methods, predictive methods and therapeutic uses.
    Type: Application
    Filed: October 6, 2010
    Publication date: August 30, 2012
    Inventors: Patrice Nordmann, Laurent Poirel