Thursday, 03 November 2022
A new study, led by experts at the University of Nottingham found that the risk of stomach bleeding caused by using aspirin long-term, can be reduced with a short course of antibiotics, potentially improving the safety of aspirin when used to prevent heart attacks, strokes and possibly some cancers.
The results of the .HEAT (Helicobacter pylori Eradication Aspirin) trial, which was led by Professor Chris Hawkey from the University of Nottingham’s School of Medicine and Nottingham Digestive Diseases Centre, and funded by the National Institute for Health and Care Research Health Technology Assessment programme, are published in The Lancet.
Aspirin in low doses is a very useful preventative drug in people at high risk of strokes or heart attacks. However, on rare occasions, it can provoke internal ulcer bleeding.
By thinning the blood, aspirin makes ulcers in the stomach bleed. These ulcers may be caused by a particular type of bacteria, helicobacter pylori.
The STAR (Simple Trials for Academic Research) team from the University of Nottingham investigated whether a short course of antibiotics to remove these bacteria would reduce the risk of bleeding in aspirin users.
The .HEAT (Helicobacter pylori Eradication Aspirin) Trial was a very large trial conducted in 1,208 UK general practices. It was a real-life study which used clinical data routinely stored in GP and hospital records, instead of bringing patients back for follow up trial visits.
The team wrote to 188,875 patients who were taking aspirin and 30,166 volunteered and took part in the study. Those who tested positive for H. pylori were randomised to receive antibiotics or placebos (dummy tablets) and were followed for up to 7 years.
Over the first two and a half years, those who had antibiotic treatment were less likely to be admitted to hospital because of ulcer bleeding than those who had dummy tablets (6 versus 17). Protection occurred rapidly: with those who received placebos (dummy treatment), the first hospitalisation for ulcer bleeding occurred after 6 days, compared to 525 days following antibiotic treatment.
Over a longer time period, protection appeared to wane. However, the overall rate of hospitalisation for ulcer bleeding was lower than expected and this in line with other evidence that ulcer disease is on the decline. Risks for people already on aspirin are low. Risks are higher when people first start aspirin, when searching for H. pylori and treating it is probably worthwhile.
Aspirin has many benefits in terms of reducing the risk of heart attacks and strokes in people at increased risk. There is also evidence that it is able to slow down certain cancers. The .HEAT trial is the largest UK-based study of its kind, and we are pleased that the findings have shown that ulcer bleeding can be significantly reduced following a one-week course of antibiotics. The long-term implications of the results are encouraging in terms of safe prescribing.
The results of the trial will be presented at the UEG (United European Gastroenterology) scientific meeting in Vienna where it has won a 10,000 Euro top abstract prize. The STAR team intend to use the prize to sponsor a competition to support a collaboration with a research team that would like to take advantage of STAR methodology.
Story credits
More information is available from Professor Chris Hawkey on cj.hawkey@nottingham.ac.uk
Notes to editors:
About the University of Nottingham
Ranked 32 in Europe and 16th in the UK by the QS World University Rankings: Europe 2024, the University of Nottingham is a founding member of the Russell Group of research-intensive universities. Studying at the University of Nottingham is a life-changing experience, and we pride ourselves on unlocking the potential of our students. We have a pioneering spirit, expressed in the vision of our founder Sir Jesse Boot, which has seen us lead the way in establishing campuses in China and Malaysia - part of a globally connected network of education, research and industrial engagement.
Nottingham was crowned Sports University of the Year by The Times and Sunday Times Good University Guide 2024 – the third time it has been given the honour since 2018 – and by the Daily Mail University Guide 2024.
The university is among the best universities in the UK for the strength of our research, positioned seventh for research power in the UK according to REF 2021. The birthplace of discoveries such as MRI and ibuprofen, our innovations transform lives and tackle global problems such as sustainable food supplies, ending modern slavery, developing greener transport, and reducing reliance on fossil fuels.
The university is a major employer and industry partner - locally and globally - and our graduates are the second most targeted by the UK's top employers, according to The Graduate Market in 2022 report by High Fliers Research.
We lead the Universities for Nottingham initiative, in partnership with Nottingham Trent University, a pioneering collaboration between the city’s two world-class institutions to improve levels of prosperity, opportunity, sustainability, health and wellbeing for residents in the city and region we are proud to call home.
More news…