Cookie use on MRCVSonline
We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive all cookies.
If you would like to forward this story on to a friend, simply fill in the form below and click send.

Your friend's email:
Your email:
Your name:
 
 
Send Cancel

New instruments for Johne’s disease and tuberculosis
The MilkEd project aimed to develop an instrument that could identify Johne’s disease in under 45 minutes.
Prototypes ready for extensive operational trials

Two prototype instruments to diagnose Johne’s disease in cattle and tuberculosis in humans and cattle have been successfully developed by Epigem.

The news follows the completion of two Innovate UK-funded projects, MilkEd and MIMIC. The micro-engineering company says that it is now focussed on preparing the instruments for extensive operational trials.

“We have made great strides technically in manufacturing devices to detect Johne’s disease in cattle and TB in humans,” said Epigem’s managing director Tim Ryan. “Complex problems require excellent multi-disciplinary teamwork, and these projects confirm that.”

MilkED

The MilkEd project aimed to develop an instrument that could identify Johne’s disease in under 45 minutes. It was crucial that the instrument could work both on-farm and in the laboratory.

The prototype uses surface acoustic waves to control an assay that is packaged into a disposable cassette. The cassette is fully automated and interconnects in a ‘plug and play’ manner within a boxed data reader.

The portable reader consists of integrated miniature sub-assemblies that perform electro-opticals microfluidic and microelectronic functions. Operated by a microcomputer, the test is based on a polymerase chain reaction (PCR) in a miniaturised environment. The 45 minutes includes extraction time.

MIMIC

The MIMIC project aimed to diagnose tuberculosis (TB) in humans within minutes based on a sample of blood taken from a pinprick. Like the MilkEd prototype, the MIMIC prototype also contains a disposable cassette which, this time, can perform serology.

Epigem says that the assay can be used to identify human TB from a drop of blood in less than 20 minutes. More than 900 people were tested as part of the project, using a library of over 40 different antigens to identify TB-specific antibodies.

Final data analysis is still in progress, but an interim analysis shows that the instrument can achieve sensitivity and specificity values in excess of 80 per cent. Researchers say that, because of the speed of the device, it has the potential for use as a triage test in areas with high TB incidence.

The results of the project are also relevant to TB in cattle and similar diseases in other animals.

“Significant impact”

"The two projects are clear beacons of excellence in innovation - showing how teams of engineers, scientists and clinicians from industry, the NHS and academia can work together to deliver new products,” said Professor Jon Cooper from the University of Glasgow, whose research team was involved in the technical delivery of the project.

“The sensors potentially have significant impact in both the veterinary and clinical markets, here in the UK and globally."

Clinical lead Dr Marc Tebruegge, of the University Hospital Southampto, added: “Existing diagnostic methods for TB have significant limitations, and are generally poorly suited for use in high TB incidence, low resource settings.

“The project has shown that multiplexed, antibody-based tests for TB are potentially feasible. The advantage of antibody-based tests is that they are typically very robust, can produce results rapidly and can be produced at relatively low cost. All those characteristics would make them ideal tools to tackle the ongoing global TB pandemic.”

Become a member or log in to add this story to your CPD history

Vets save premature penguin chick

News Story 1
 Vets have saved a tiny Humboldt penguin chick after her egg was accidentally broken by her parents. Keepers at ZSL London Zoo were shocked to find the chick, named Rainbow, still alive and rushed her straight to the Zoo’s on-site veterinary clinic.

It was a little way to go until the chick should have hatched, so the process was touch and go. Vets removed bits of shell from around the chick with tweezers until she could be lifted out and placed in a makeshift nest.

Rainbow is now in a custom-built incubation room where she spends her days cuddled up to a toy penguin. Keepers will hand-fed Rainbow for the next 10 weeks until she is healthy enough to move to the penguin nursery.  

Click here for more...
News Shorts
BVA infographic to help shoppers understand farm assurance schemes

An infographic to help members of the public understand farm assurance schemes has been produced by the BVA. The infographic outlines BVA’s priorities for animal welfare and shows whether or not the schemes address these priorities in their standards.

BVA president John Fishwick said: “The infographic is not intended to be a league table but to allow people to understand what aspects of animal health and welfare are addressed by assurance schemes so that they can decide which scheme best aligns with their own individual preferences and priorities."