University of Nottingham Communications Department

NEWS ARTICLE

Bovine Mastitis — could a vaccine be on the way?

Wed, 17 Sep 2008 12:25:00 GMT

PA 225/08

It is the most common infectious disease in farmed animals. Around one million cases occur each year in the UK. It is painful, occasionally life threatening, and costs the dairy industry £200m every year in lost production and treatments. Within the UK alone it has been estimated that around 12m doses of antibiotic are used annually to control and treat mastitis in cattle.

Now The University of Nottingham, with funding worth £2.2m, is to carry out a study of the most common cause of Bovine Mastitis in the UK — Streptococcus uberis (S. uberis). If researchers can identify which parts of the bacteria enable the infection their results could lead to the production of an effective vaccine.

James Leigh, Professor of Molecular Bacteriology, who has recently joined the School of Veterinary Medicine and Science, said: “We hope to uncover bacterial antigens of potential use in vaccines aimed at preventing bovine mastitis and provide a detailed understanding of how animals can fight off the disease.”

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Bovine Mastitis is a bacterial infection of the udder in dairy cows. S. uberis is responsible for a significant proportion of clinical mastitis worldwide — but unlike many other bacteria that cause the disease S. uberis is also in the environment — it is found in pasture and bedding and can even colonise the cow at other body sites with no ill effect — so it is difficult to see how it can be controlled by changes to animal husbandry and milking-time hygiene.

With funding from the Biotechnology and Biological Sciences Research Council (BBSRC) the School of Veterinary Medicine and Science has established research laboratories at the Institute for Animal Health (IAH). The project is being conducted in collaboration with Dr Tracey Coffey’s Bovine Genomics group based at IAH and other groups at the Royal Veterinary College, the US Department of Agriculture in the UK and the University of Oxford.

Professor Leigh said: “We will use state-of-the-art molecular technology to determine the differences between strains of S. uberis that can and cannot cause disease. Proteins that are only present in the disease causing strains hold the key to determining which components are essential for infection. We will show which of these proteins are most likely to make an effective vaccine by producing strains of S. uberis which lack the ability to produce each of these proteins; if a strain lacking a particular protein is less able to cause disease then this protein is important for the disease process and becomes a candidate for vaccine development.”

The team also want to identify any parts of the immune response in the dairy cow which can be altered to prevent the disease — this information could subsequently be used to develop drugs that interfere with the chemical messages that lead to inflammation and therefore reduce the level of disease.

In the last few months members of the Nottingham Vet School have been involved in successfully winning a number of grants and awards to support the School’s growing portfolio of research.

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Notes to Editors: The University of Nottingham is ranked in the UK's Top 10 and the World's Top 70 universities by the Shanghai Jiao Tong (SJTU) and Times Higher (THE) World University Rankings.

It provides innovative and top quality teaching, undertakes world-changing research, and attracts talented staff and students from 150 nations. Described by The Times as Britain's "only truly global university", it has invested continuously in award-winning campuses in the United Kingdom, China and Malaysia.

Twice since 2003 its research and teaching academics have won Nobel Prizes. The University has won the Queen's Award for Enterprise in both 2006 (International Trade) and 2007 (Innovation — School of Pharmacy).

Its students are much in demand from 'blue-chip' employers. Winners of Students in Free Enterprise for four years in succession, and current holder of UK Graduate of the Year, they are accomplished artists, scientists, engineers, entrepreneurs, innovators and fundraisers. Nottingham graduates consistently excel in business, the media, the arts and sport. Undergraduate and postgraduate degree completion rates are amongst the highest in the United Kingdom.