A New Way to See Beta Cell Loss Could Change How Doctors Track Type 1 Diabetes

In type 1 diabetes, the immune system gradually destroys the beta cells in the pancreas that produce insulin. As these cells are lost, the body can no longer regulate blood sugar effectively. Preserving the remaining beta cells—or finding ways to restore them—is a central goal for new type 1 diabetes treatments.

But here's the problem: doctors currently have no reliable way to directly measure how many beta cells a person has left. Instead, they rely on indirect blood-based markers that can change based on glucose levels and other factors, making them less accurate as the disease progresses.

Researchers at Kyoto University investigated whether a PET imaging tracer designed to target the GLP-1 receptor could provide a non-invasive, direct measurement of beta cell mass. The tracer, called [18F]FB(ePEG12)12-exendin-4, was given intravenously to adults with type 1 diabetes in a prospective study conducted at Kyoto University Hospital.

This approach is significant because PET imaging could offer an objective way to see beta cells directly, rather than inferring their presence from blood markers.

If this imaging technique proves reliable in broader use, it could transform how doctors evaluate whether new therapies aimed at preserving or restoring beta cell mass are actually working. Right now, researchers and clinicians lack this direct measurement tool in routine clinical settings.

According to first author Kentaro Sakaki, 'Our study was driven by a key gap in type 1 diabetes research and care. We hope this approach can help fill that gap by providing an objective readout for therapeutic evaluation.'

The findings have been published in the journal Diabetes. While this research is promising, the imaging technique will need further validation and development before it becomes a standard tool in clinical practice. The goal is to eventually help doctors and patients track whether new type 1 diabetes treatments are preserving or restoring beta cell function over time.

Origin: medicalxpress.com (News report). Evidence: News report — unverified, pending corroboration. Type1Cure is an information and intelligence hub, not a medical advice service. This article summarizes published research and does not provide diagnosis, treatment, or personal medical guidance. Always talk to your own care team before changing anything about your Type 1 diabetes management.