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Antibiotic resistance has become one of the great challenges to human health in the 21st century with increasing numbers of isolates of many pathogenic bacteria being resistant to front line, therapeutic antibiotics. Recent evidence has suggested that antibiotic resistance can be selected by exposure to biocides, which are commonly used as disinfectants and preservatives.
Research at the University of Birmingham has shown the common mechanistic links between antibiotic and triclosan (a commonly used biocide) resistance. This research was used by the European Commission as evidence to support two reports published in 2009 and 2010 to inform opinions as to the safety of biocide use. These reports recommended specific new research avenues be funded and that possible selection of antibiotic resistance by biocides is a valid concern and were used as part of the evidence base in preparation of a new law which has come in to force across the European Union.
Biocide use and sales in Europe have been controlled by the Biocidal Products Directive since 1998. This legislation has been superseded by the EU Biocides Regulation (published May 2012, legally binding from September 2013). This new legislation now includes a requirement for new biocides to be demonstrated not to select resistance to themselves or antibiotics in target organisms before achieving registration; this addition was informed by University of Birmingham research. This will prevent biocides entering the environment that exert a selective pressure and favour the emergence of mutant bacteria with increased biocide and antibiotic resistance. Thus the research described has had an impact on policy debate and the introduction of new legislation.
Professor James and colleagues developed a comprehensive, multi-strand strategy for control of healthcare-associated infections caused by life-threatening bacterial superbugs Clostridium difficile (C.diff) and methicillin-resistant Staphylococcus aureus (MRSA). Founded on research to understand the transmission, virulence and antibiotic resistance of these species, their approach resulted in: (i) increased public awareness of healthcare associated infections; (ii) changed behaviours of the public and healthcare professionals to reduce transmission; (iii) improved national healthcare policies to control infections; and (iv) development of new antibiotic methods to tackle the rapidly-evolving resistance. The outcome is a nationwide decline in reported cases of C.diff and MRSA infections in patients since 2008, with consequent economic benefits to the NHS, Government and employers.
Professor William Stimson has led research into rapid diagnostic tests for the food industry from 1996 to the present day. These tests reduce the time for microbiological testing of food pathogens from 2-5 days to within a working day. The new technology is fully automated, uses less material and involves fewer manipulations than previously available kits, leading to a reduction in cost and time. A spin out company, Solus Scientific Solutions Ltd., has attracted €1.36M EUROSTARS funding for further Research & Development, and has created 24 jobs. Sales of testing kits produced revenue of £3.4 million by year end 2012, and have increased since this date.
In one of the world's largest molecular epidemiological studies of its kind, researchers at the University of Aberdeen identified retail chicken as the single largest source of Campylobacter food poisoning in Scotland. Informed by this research, a joint working group with membership from industry and government was created to identify and put into place interventions to reduce Campylobacter in chickens. In addition, the evidence from Aberdeen was used by the European Food Safety Authority and the New Zealand Food Safety Authority to develop their own integrated approaches to protect the public from this food poisoning pathogen.
Therefore this has resulted in impact relating to: health and welfare, commerce and public services and international policies.
Cardiff Researchers in 2009 discovered the new antibiotic resistance determinant NDM-1 and in 2010/11 characterised its rapid worldwide spread through Gram-negative bacteria (e.g. Escherichia coli and Vibrio cholerae). NDM-1 redefined how antibiotic resistance can spread locally and internationally and create new extensively-drug resistance (XDR) that severely limits therapeutic options. This discovery has resulted in: 1) new policies for the admission of overseas patients to hospitals in the UK, France, USA, Australia and China, 2) linkage between MDR transmission and poor sewerage treatment, 3) potable water treatment in Southern Asia 4) positioning papers for the World Health Assembly and 5) policy-changes by the World Health Organisation.
Local authorities, the UK government and the European Commission have benefitted from the widespread application of new molecular methodologies, developed in 2005 and applied by the University of Reading's Vertebrate Pests Unit (VPU) to identify and quantify anticoagulant rodenticide resistance in rodent populations. Rodents are a major global pest that consumes our food, causes contamination with urine and faeces, damages structures through gnawing, transmits diseases, and impacts on species of conservation concern. Due to historical success and recent regulatory restrictions, anticoagulant rodenticides are the most common control method for these pests. However, physiological resistance to anticoagulants is now widespread and the VPU has been involved in mapping this resistance and identifying the genetic basis for the resistance. Their research has led to new methodologies to identify anticoagulant resistance that have been adopted by the global plant science industry and to new guidance in treating resistant populations that has been adopted by the European biocides industry.