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Announced at the 2017 Lawson Impact Awards, Drs. Muriel Brackstone and Gregor Reid were recipients of Lawson’s annual Strategic Research Fund (SRF) competition. Their project, “Re-setting the breast microbiome to lower inflammation and risk of cancer,” will examine whether taking an oral probiotic can reduce inflammation and lower the risk of breast cancer.

One in nine Canadian women will develop breast cancer during her lifetime (Canadian Breast Cancer Foundation). Many cancers are considered to be the result of inflammatory processes. While inflammation has been a focus of research in breast cancer, the role of bacteria has not.

Recently, Drs. Reid and Brackstone were collaborators on a study that was the first to describe the breast microbiome, proving the existence of bacteria in human breast tissue. Led by Dr. Reid and his former PhD student, Dr. Camilla Urbaniak, further research demonstrated that the types of bacteria found in women with breast cancer differ significantly from those found in healthy tissue.

One bacterial species from the cancerous tissue, Escherichia coli (E. coli), is capable of producing low amounts of substances known to cause cancer and induce inflammation, while the bacteria found in healthy tissue, like Lactobacillus, are known to interfere with cancer processes.

“The question is whether we can manipulate this to essentially get rid of more harmful bacteria and replace them with beneficial ones like Lactobacillus,” says Dr. Reid, a Lawson scientist and Director of the Canadian Centre for Human Microbiome and Probiotic Research.

In this new study, Dr. Brackstone and Dr. Reid will join forces to test their theory that taking an oral probiotic lactobacilli will lead to these organisms reaching the breast tissue, displacing harmful bacteria and reducing inflammation.

Drs. Brackstone and Reid will compare bacteria from the breast tissues of women at risk for breast cancer who are taking the probiotic against those at risk who are taking a placebo. They will also compare to the breast tissue of healthy women who are not at risk. The research participants will provide nipple and needle aspirates for their bacteria to be analyzed both at the beginning of the study and after three months of either taking the probiotic or a placebo. The samples will also be tested for inflammatory compounds, levels of heavy metals and pesticides that may influence cancer risk.

“I think this study will shed light into what actually occurs in the milk ducts where most breast cancers originate,” says Dr. Brackstone, a Lawson scientist, surgical oncologist and medical director for the London Breast Care Clinic. “If successful, this project could lead to larger studies and contribute to a new way of approaching breast cancer management.”

Now in its third year, Lawson’s Strategic Research Fund (SRF) supports research projects that will advance science in alignment with Lawson’s strategic research goals, as outlined in Lawson’s 2014-2018 Strategic Plan. This year’s competition once again focused on “inflammation”. Chosen projects received $50,000 over a two-year period.

Learn more about this research project:

Amanda McIntyre was presented with the 2018 Leadership Award for Fellows & Students at this year’s Lawson Impact Awards, recognizing her skills as a leader, researcher, clinician and community advocate. McIntyre is a PhD candidate in nursing at Western University and a part of Lawson researcher Dr. Robert Teasell’s team at St. Joseph’s Health Care London’s Parkwood Institute.

McIntyre began her career at Lawson as a research assistant in 2011 and since then has built an impressive academic and research record, while at the same time obtaining a nursing degree from Western University. In addition to her many research obligations, she continues to take regular nursing shifts in the emergency department to build her clinical experience.

“We nominated Amanda because she’s kind of like a renaissance person. She does a lot of things and whatever she does, she does really well,” says Dr. Robert Teasell, medical director of the Stroke Rehabilitation Unit at Parkwood Institute.

McIntyre is involved in a variety of research projects in the field of neurorehabilitation and has been an author on 50 peer-reviewed publications.

She is the project coordinator and an editor of the Spinal Cord Injury Evidence-Based Review (SCIRE), an extensive and comprehensive review of the Spinal Cord Injury (SCI) Rehabilitation literature considered to be the leading research synthesis of SCI rehabilitation anywhere in the world. She also had an active role in the development of the Canadian Best Practice Recommendations for Stroke Care.

McIntyre is a two-time recipient of the Mary Elizabeth Horney Fellowship in Rehabilitation Research, which is funded through St. Joseph’s Health Care Foundation. As part of her fellowship, she is conducting research on the transition of stroke patients from inpatient to outpatient rehabilitation, and back to the community. Her doctoral research will focus on the delivery and access of care in emergency departments and the influence this has on patient outcomes.

McIntyre has assumed a supervisory and mentorship role in Dr. Teasell’s lab. She has been instrumental to the development of many research assistants, students and volunteers.

She is also currently the graduate students’ representative on the Nursing Research Advisory Committee, and a research practicum mentor for Nurse Practitioner students at Western University, allowing her to act as an advocate for current and future nursing students.

She says, “Winning this award is a huge privilege. It represents not just my successes but our entire team’s success, so I think it’s a win for all of us.”