Becton Dickinson and Company Limited

Liping Feng

Adrien P Malick

Susan M Kircher

William B Brasso

Vanda White

John D Mantlo

Ben Turng

Song Shi

Patrick Shawn Beaty

Julie L Rosales

Jon E Salomon

Tuan-Linh Ngoc Nguyen

Dyan Luper

Xiao Mo

Michael A Brasch

Timothy M Wiles

Brent Ronald Pohl

Charles C Yu

Ming-hsiung Yeh

Mei Yang-Woytowitz

Gary F Hershner

James Y Zhou

Eric Ursprung

Xiaofei Chang

Curtis M Gosnell

Patrick R Murray

Donald Ray Callihan

Jeffery H Bruton

John P Douglass

Dwight Livingston

Ammon David Lentz

Kevin Bailey

Gerard Lotz

Gretta Campbell

Ming-Hsiung Yeh

Donald R Callihan

Shawn Beaty

An apparatus and associated methods of use for a controlled combination of reagents is disclosed. The apparatus includes a vessel, a vessel insert, and a cap element. The vesselhas a body portionfor receiving a biological sample. The vessel insertreceives at least one reagent therein. Preferably, the vessel insertis received in a portionof the vessel. The cap elementis attached to the vesselto secure the vessel insertin the vessel. During use, the vessel insertis adapted to release its contents when the biological sample is introduced into the body portionof the vesselupon application of an intermixing force to the vessel insert. A variety of intermixing forces may be applied, depending upon the embodiment of the present invention and its associated methods of use.

Blood culture bottles with mechanisms for controlled release of substances into culture media

Various embodiments disclosed herein provide for reagents and methods for rapidly isolating viable microbial cells, including, from positive blood culture samples. The resulting microbial pellet can be used for both identification and growth-based methods such as antimicrobial susceptibility testing. The buffers described herein may contain a base solution, non-ionic detergents, thiols, and optionally, ammonium chloride. The disclosed methods provide a process for rapidly isolating and concentrating viable microorganism(s) from PBC samples using only one sample preparation tube and centrifugation while removing cellular debris from the mammalian blood cells that may interfere with identification methods.

Formulations and process for isolating viable microorganisms from positive blood cultures

Rapid methods that identify sepsis-causing bacteria or yeast aid the physician in critical therapeutic decision-making, thus decreasing patient mortality rates. The methods described herein employ plating microorganisms directly on to a MALDI-MS plate, adding concentrated formic acid, and identifying the microorganism by mass spectrometry. Optionally, an organic solvent may be combined with the formic acid, or added to the sample before or after the concentrated formic acid is added thereto. The methods enable direct extraction of proteins from microorganisms without the need for liquid protein extraction methods and yields positive identification results for gram-positive bacteria, gram-negative bacteria and yeast in minutes.

Identification of microorganisms using MALDI-TOF-MS on-plate extraction

Various embodiments disclosed herein provide for reagents and methods for rapidly isolating viable microbial cells, including, from positive blood culture samples. The resulting microbial pellet can be used for both identification and growth-based methods such as antimicrobial susceptibility testing. The buffers described herein may contain a base solution, non-ionic detergents, thiols, and optionally, ammonium chloride. The disclosed methods provide a process for rapidly isolating and concentrating viable microorganism (s) from PBC samples using only one sample preparation tube and centrifugation while removing cellular debris from the mammalian blood cells that may interfere with identification methods.

Methods of the invention include the isolation of intact, viable microorganism(s) from positive blood culture ('PBC') samples for use in downstream analyses such as identification and antimicrobial susceptibility testing ('AST'). The methods involve collecting a portion of the PBC sample, adding a choline-containing solution, lysing the blood cells, isolating the viable microorganism, and performing downstream analysis of the isolated, viable microorganism. The methods can be applied to a variety of gram-positive bacteria, gram-negative bacteria, and/or yeast, and particularly to strains of

Method for direct and rapid identification of microorganisms and antimicrobial susceptibility testing from positive blood cultures

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Baltimore, MD, United States of America

Liping Feng