Consumption of carbapenems increased significantly in European countries from 2007-2010 and occurrence of carbapenem-resistant Klebsiella pneumonia is already high and increasing in some European countries. Recent publications in both the scientific and popular press have high-lighted the challenge and outbreaks associated with microorganisms containing ESBL mechanisms including reports on NDM-1, KPC and most recently CRE (Carbapenem-Resistant Enterobacteriaceae). Accurate and rapid detection of resistance is essential for effective infection control measures, as current techniques lack either specificity or rapid turn-around time.
MALDI-TOF mass spectrometry allows for an exact determination of the molecular weight of a broad range of antibiotics. In the presence of an ESBL, the antibiotic is converted to fragments of predictable molecular weight which are also measured using the MALDI Biotyper. As with bacterial identification, the MALDI Biotyper is thus anticipated to provide both improved, shorter time-to-result as well as potentially better specificity.
Dr. Theo Luider, Head of the Laboratories of Neuro-Oncology, Department of Neurology, Erasmus University of Rotterdam, pointed out: “We have been working with MALDI-TOF mass spectrometry for many years originally in the field of clinical proteomics, but more recently the increased usage of the MALDI-TOF approach for microbial identification also became an area of interest for us. We have filed a PCT patent for the characterization of beta-lactamase activity by MALDI-TOF mass spectrometry with the title "Methods and means for characterizing antibiotic resistance in microorganisms". With their outstanding expertise in mass spectrometry and clinical microbiology market presence, we think that Bruker is the right partner to bring such novel assays to the market.”
Dr. Stefan Zimmermann, Department of Infectious Disease, Medical Microbiology and Hygiene,at the University Hospital Heidelberg, commented: “We have been using MALDI Biotyper-based functional beta-lactamase assays in our hospital for roughly two years with the main application being epidemiology and hospital hygiene. It is of great importance to know as early as possible, especially in the intensive care unit, if a new patient carries a carbapenem-resistant Klebsiella pneumonia (KPC). In this case we are able to isolate the patient sooner than with older phenotypic methods. MALDI Biotyper-based KPC-testing improves patient health and at the same time improves cost-efficiency of the Intensive Care Unit by limiting the isolation of patients to those cases where it is really necessary.”Dr. Wolfgang Pusch, Executive Vice President - Microbiology Business at Bruker Daltonics, added: “The signing of this exclusive license agreement with the Erasmus Medical Center is another major milestone in our MALDI Biotyper strategy. While MALDI Biotyper-based microbial identification is already established in many countries, we see significant growth potential in MALDI-based beta-lactamase testing. The exclusively licenced IP from Erasmus Medical Center further strengthens our own broad portfolio of intellectual property in the field of mass spectrometry-based microbial analysis ranging from sample preparation, data processing, MALDI-TOF technology, direct analysis from positive blood cultures and beta-lactamase testing, and offers laboratories worldwide another tool in the fight against resistant bacteria.” About the Bruker MALDI Biotyper The dedicated MALDI Biotyper solution enables molecular identification, and taxonomical classification or dereplication of microorganisms like bacteria, yeasts and fungi. Classification and identification of microorganisms is achieved reliably and quickly using proteomic fingerprinting by high-throughput MALDI-TOF mass spectrometry. Applications include clinical routine microbial identification, environmental and pharmaceutical analysis, taxonomical research, food and consumer product safety and quality control, as well as marine microbiology. The robust MALDI Biotyper method requires minimal sample preparation and offers low consumables cost. The MALDI Biotyper is available in a research-use-only version, or in an IVD-CE version according to EU directive EC/98/79 in various European countries. ABOUT BRUKER CORPORATION (NASDAQ: BRKR) Bruker is a leading provider of high-performance scientific instruments and solutions for molecular and materials research, as well as for industrial and applied analysis. For more information: www.bruker.com