COVID-19Early Detection of CancerSensitivity and SpecificityColorectal NeoplasmsPeptidesFecesColonoscopyHemoglobinsMothersPoint-of-Care SystemsReferral and ConsultationOccult BloodCarbolinesCyclizationTryptophan
Dr. Maclean studies how to better predict and manage serious health conditions like acute kidney injury (AKI) and colorectal cancer (CRC). He investigates different methods of testing, such as analyzing substances in urine and stool, to identify these conditions early and accurately. Additionally, he explores the use of artificial intelligence to develop drugs targeting important receptors in the body, which could lead to more effective treatments for various diseases, including those impacting the gastrointestinal system.
Key findings
In a study of 488 patients, urine biomarkers indicated that 49.5% showed signs of acute kidney injury after major abdominal surgery—much higher than the 8.8% detected through blood tests.
The use of faecal immunochemical tests (FIT) for colorectal cancer referrals increased by 360%, while the actual rate of diagnosed cases decreased from 8.87% to 3.24%, indicating improved diagnostic efficiency.
In a study using a portable blood test device, it accurately identified 92.9% of colon cancer cases and 76.9% of serious bowel diseases among 553 patients, improving the speed of diagnosis.
Frequently asked questions
Does Dr. Maclean study colorectal cancer?
Yes, Dr. Maclean's research focuses significantly on diagnosing and managing colorectal cancer through various testing methods.
What treatments has Dr. Maclean researched?
Dr. Maclean has explored drug discovery processes, particularly for medications targeting G protein-coupled receptors, which are crucial for many bodily functions.
Is Dr. Maclean's work relevant to patients undergoing surgery?
Absolutely. His research on urinary biomarkers helps identify patients at risk for acute kidney injury after major surgeries, aiming to improve patient outcomes.
How does Dr. Maclean's research impact colorectal cancer screening?
His studies show that methods like faecal immunochemical tests can effectively rule out colorectal cancer, reducing the need for more invasive procedures.
What is the significance of Dr. Maclean's work with artificial intelligence?
Dr. Maclean uses artificial intelligence to accelerate the drug discovery process, potentially bringing new and effective treatments to patients more quickly.
Publications in plain English
On-Resin Pictet-Spengler Cyclization for 1,2,3,4-Tetrahydro-β-carboline-3-carboxylate (Tcc) Peptide Synthesis With Acid-Labile Functional Tolerance.
2026
Journal of peptide science : an official publication of the European Peptide Society
Plain English This study focused on improving the method for creating a specific type of peptide using a compound called Tcc, which helps shape the structure of peptides for better function. The researchers developed a gentler way to achieve this reaction, allowing the use of sensitive materials that break down in strong acids. Their findings may lead to more versatile and useful peptides in research and drugs.
Who this helps: This helps researchers and drug developers working with peptide therapies.
A prospective diagnostic study investigating urinary biomarkers of AKI in major abdominal surgery (the AKI-biomas study).
2025
Critical care (London, England)
Singh R, Maclean W, Singh T, Mackenzie P, Rockall T +1 more
Plain English This study looked at how well certain substances in urine (called biomarkers) could predict acute kidney injury (AKI) in patients after major stomach surgery. Out of 488 patients, nearly half (49.5%) showed signs of AKI using urine output as a measurement, while only 8.8% showed it based on blood tests. The findings are important because they highlight that using urine biomarkers, particularly NGAL, can help identify patients at risk for AKI early on, potentially improving treatment outcomes.
Who this helps: Patients undergoing major abdominal surgery.
The increasing burden of the 2-week wait colorectal cancer pathway in a single centre: the impact of faecal immunochemical tests.
2024
Annals of the Royal College of Surgeons of England
Farkas N, O'Brien JW, Palyvos L, Maclean W, Benton S +2 more
Plain English This study looked at how using a specific test called faecal immunochemical tests (FIT) has affected the way doctors refer patients for possible colorectal cancer (CRC) in a healthcare center. The findings revealed that the number of TWW referrals increased by 360%, but the rate of diagnosed CRC decreased from 8.87% to 3.24%. This is important because it shows that while more patients are being checked for CRC, the actual cases detected remain stable, suggesting that FIT tests help avoid delays in diagnosis without overloading the system.
Who this helps: This benefits patients, doctors, and the healthcare system by improving the efficiency of CRC detection.
The application of artificial intelligence to accelerate G protein-coupled receptor drug discovery.
2024
British journal of pharmacology
Nguyen ATN, Nguyen DTN, Koh HY, Toskov J, MacLean W +5 more
Plain English This study looked at how artificial intelligence (AI) can speed up the process of developing drugs that target G protein-coupled receptors (GPCRs), which are important for many body functions. Researchers found that using AI can help in understanding GPCR actions and in discovering new medications, making the drug development process faster, smarter, and cheaper. This matters because it can lead to new treatments being available sooner, improving healthcare for patients who rely on these drugs.
Who this helps: Patients needing new and effective medications.
Replicate and repeat faecal immunochemical tests in symptomatic patients: A systematic review.
2023
Annals of clinical biochemistry
Farkas NG, Fraser CG, Maclean W, Jourdan I, Rockall T +1 more
Plain English This research paper looked at the effectiveness of doing multiple fecal immunochemical tests (FITs) on patients with symptoms potentially indicating colorectal cancer (CRC). The review analyzed seven studies and found mixed results: some studies suggested that repeat tests could reduce missed cancer diagnoses, while others showed no significant benefit. This is important because better testing methods can lead to earlier detection of CRC, ultimately saving lives.
Who this helps: Patients at risk for colorectal cancer.
Patient-reported outcome measures show FIT as an acceptable investigation to rule out colorectal cancer in the two-week wait cohort.
2023
Annals of the Royal College of Surgeons of England
Maclean W, Whyte MB, Farkas N, Benton SC, Rockall T +1 more
Plain English This study looked at how patients felt about using a stool test called FIT to check for colorectal cancer instead of more invasive methods like colonoscopy. Out of 109 patients surveyed, 85% were completely satisfied with traditional methods for ruling out cancer, but 30% were also very satisfied with the idea of using a negative FIT to avoid further testing. The results show that most patients find FIT easy to use and prefer it over more invasive procedures, which can help make cancer screening less stressful.
Who this helps: This benefits patients who may be anxious about undergoing invasive tests for colorectal cancer.
Efficacy and accuracy of faecal sampling by a digital rectal examination for faecal immunochemical testing.
2023
Annals of clinical biochemistry
Maclean W, Benton SC, Whyte MB, Rockall T, Jourdan I
Plain English Researchers studied the effectiveness of collecting stool samples during a digital rectal examination (DRE) compared to how patients typically collect their own samples for a test that checks for serious bowel diseases. They found that of 596 patients, 43.3% provided a "good" sample, while 19.6% offered a "poor" sample, and 37.1% provided no sample at all. The reliability of samples decreased sharply, with effective detection of serious bowel disease falling from 76% for good samples to just 41.7% for poor samples, highlighting that while DRE can speed up testing, it doesn't always guarantee a usable sample.
Who this helps: This helps doctors diagnose bowel issues more quickly and efficiently.
Comparison of the QuikRead gopoint-of-care faecal immunochemical test for haemoglobin with the FOB Gold Widelaboratory analyser to diagnose colorectal cancer in symptomatic patients.
Plain English This study looked at how well a new point-of-care test, the QuikRead go, detects signs of colorectal cancer (CRC) compared to a standard lab test, the FOB Gold Wide. It found that 70% of samples tested negative with QuikRead go, while 83% tested negative with FOB Gold Wide, showing a significant difference. Although both tests were effective at detecting CRC—92.9% sensitivity for QuikRead go and 100% for FOB Gold Wide—using the QuikRead go would lead to more people needing further tests.
Who this helps: This benefits doctors and patients suspected of having colorectal cancer by facilitating quicker testing decisions.
Adoption of faecal immunochemical testing for 2-week-wait colorectal patients during the COVID-19 pandemic: an observational cohort study reporting a new service at a regional centre.
2021
Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland
Plain English This study looked at how a new test called faecal immunochemical testing (FIT) was used for patients with possible colorectal cancer during the COVID-19 pandemic when regular tests were hard to perform. Out of 381 patients who were invited to take the test, 358 (94%) returned their samples. Using FIT reduced the number of patients needing further invasive tests (like colonoscopies) from 62% to 34%, but the rate of colorectal cancer diagnoses stayed similar to pre-pandemic levels at 3.7%.
Who this helps: This benefits patients at risk for colorectal cancer by ensuring those who need urgent care receive it while minimizing unnecessary procedures.
Assessment of the analytical performance of point-of-care faecal immunochemical tests for haemoglobin.
2021
Annals of clinical biochemistry
O'Driscoll S, Carroll M, Maclean W, Piggott C, Jourdan I +1 more
Plain English This study looked at three different point-of-care tests that check for hemoglobin in stool samples, which is important for screening and managing colorectal cancer. They found that two tests, QuikRead go and OC-Sensor iO, worked well and produced accurate results most of the time, while the Eurolyser Cube sometimes showed misleadingly low results when too much hemoglobin was present. This is important because it helps ensure patients receive accurate screenings for colorectal cancer, which can lead to better and timely treatment.
Who this helps: Patients at risk for colorectal cancer.
Diagnostic accuracy of point of care faecal immunochemical testing using a portable high-speed quantitative analyser for diagnosis in 2-week wait patients.
2021
Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland
Plain English This study examined whether a portable device for testing blood in stool samples could effectively help doctors diagnose patients waiting for colon cancer screenings. Researchers found that out of 553 patients, 2.5% had colon cancer and 9.4% had serious bowel diseases, with the portable test correctly identifying 92.9% of those with colon cancer and 76.9% of those with serious bowel issues. This matters because it allows doctors to quickly determine if further tests are needed within a single appointment, making it easier to manage patients' care.
Who this helps: This benefits patients awaiting colorectal testing and their doctors.
The two-week rule colorectal cancer pathway: an update on recent practice, the unsustainable burden on diagnostics and the role of faecal immunochemical testing.
2020
Annals of the Royal College of Surgeons of England
Maclean W, Singh R, Mackenzie P, White D, Benton S +3 more
Plain English This study looked at how changes in referral guidelines for suspected colorectal cancer affected the number of patients diagnosed with the disease and the strain on diagnostic services. Between 2017 and 2018, there were 1,414 referrals under the new guidelines, resulting in 62 cancer diagnoses, but the cancer detection rate dropped to just 3.6% from the previous 7.5%. The findings indicate that even though more patients were referred for testing, it did not lead to more cancer diagnoses, putting extra pressure on healthcare resources and highlighting the need for easier testing methods.
Who this helps: This benefits patients and doctors by pushing for better testing options that reduce unnecessary procedures.
Large gallstone impaction at a Meckel's diverticulum causing perforation and localized peritonitis: report of a case.
2013
Journal of surgical case reports
Maclean W, Szentpáli K
Plain English This paper describes a case where a large gallstone got stuck in a small pouch on the intestine called a Meckel's diverticulum, which led to a hole in the pouch and an infection in the abdomen. The doctors successfully performed a minimally invasive surgery to remove the damaged tissue. This is important because such cases are rare, and it highlights the need for awareness of complications from gallstones.
Who this helps: This helps patients with gallstones and doctors treating abdominal issues.
Cluster analysis of maternal characteristics and perceptions of child behavior problems in a behavioral pediatrics practice.
2002
Journal of developmental and behavioral pediatrics : JDBP
McKay W, Maclean W, Bourgeois M
Plain English This study looked at the different concerns and emotional states of mothers who brought their children to a behavioral pediatrics clinic. Researchers identified four distinct groups of mothers based on their reasons for seeking help: some were looking for advice, some were worried about their children's health, others felt overwhelmed, and a fourth group had relationship issues affecting their view of their children. Understanding these differences can help doctors tailor their approaches to meet the specific needs of each family.
Who this helps: This helps mothers, pediatricians, and mental health professionals.
Intellectual characteristics of Prader-Willi syndrome: comparison of genetic subtypes.
2000
Journal of intellectual disability research : JIDR
Roof E, Stone W, MacLean W, Feurer ID, Thompson T +1 more
Plain English This study looked at the intellectual abilities of individuals with Prader-Willi syndrome (PWS), focusing on two genetic types: those with a deletion on chromosome 15 and those with maternal uniparental disomy (UPD). Researchers found that people with UPD had higher verbal IQ scores, averaging 69.9 compared to 60.8 for those with the deletion—a significant difference. For instance, 50% of the UPD group had a verbal IQ of 70 or above, while only 17% of the deletion group did. Understanding these differences is important for tailoring educational and support strategies for individuals with PWS.
Who this helps: This helps patients with Prader-Willi syndrome and their caregivers.
The role of industry in bringing foods for particular nutritional uses (PARNUTS) to the market.
1999
European journal of clinical nutrition
Leathwood P, MacLean W, Uauy R
Plain English This study looked at how companies work together with researchers to create new foods meant for specific nutritional needs. It found that businesses play a crucial role in developing these products, finding out what consumers will want, and funding the necessary research. The collaboration between industry and scientists helps ensure that the food products meet both health requirements and market demands, especially for specialized needs like those related to genetic metabolic disorders.
Who this helps: This benefits patients with specific nutritional needs, healthcare providers, and food industry professionals.
Positive peak identification in liquid chromatography using absorbance ratioing with a variable-wavelength spectrophotometric detector.
1977
Journal of chromatography
Yost R, Stoveken J, Maclean W
Plain English This study looked at ways to identify compounds in a liquid chromatography process using a technique that measures absorbance ratios at different wavelengths. The researchers found that when they used this method with specific wavelengths, they could reliably determine whether a compound was pure by comparing absorbance ratios. They achieved consistent results, showing that similar compounds had the same ratios, which is helpful for quickly identifying these substances in complex mixtures.
Who this helps: This benefits researchers and labs that need to analyze and identify chemical compounds accurately and efficiently.