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Retinal Imaging for Alzheimer’s Detection

August 22nd, 2017 Conn Hastings Geriatrics, Neurology, Ophthalmology

A team of researchers at Cedars-Sinai Medical Center in Los Angeles and NeuroVision Imaging, a Sacramento, California firm, have developed a retinal imaging system that could allow early detection of Alzheimer’s disease.

One of the hallmarks of Alzheimer’s disease is the accumulation of beta-amyloid protein in the brain. There are numerous ways to monitor levels of beta-amyloid in the nervous system, including cerebrospinal fluid analysis, or imaging techniques like positron emission tomography. However, these techniques are invasive and expensive, meaning that they are unsuitable for routine screening to assess disease progression.

“We know that Alzheimer’s begins as many as 10 or 20 years before cognitive decline becomes evident, and we believe that potential treatments may be more effective if they can be started early in the process. Therefore, screening and early detection may be crucial to our efforts to turn the tide against the growing threat of this devastating disease,” says Keith Black, a researcher who was involved in the study.

The team developed a new method to detect beta-amyloid protein in the retina by using a specialized ophthalmic camera and sophisticated image-processing software to conduct fluorescence imaging. The technique is much less invasive than other methods of measuring beta-amyloid concentrations and may end up helping tremendously in the fight against Alzheimer’s. “As a developmental outgrowth of the central nervous system that shares many of the brain’s characteristics, the retina may offer a unique opportunity for us to easily and conveniently detect and monitor Alzheimer’s disease,” said Black.

In a recent study, published in journal JCI Insight, the team conducted a small clinical trial to see if they could identify beta-amyloid in the retina using the technique. They found an average 4.7-fold increase in beta-amyloid plaques in the retinas of patients with Alzheimer’s, suggesting the technique could be useful to find people at risk of the disease, or to monitor those who already have it.

Study in JCI Insight: Retinal amyloid pathology and proof-of-concept imaging trial in Alzheimer’s disease…

Via: NeuroVision…

Conn Hastings

Conn Hastings received a PhD from the Royal College of Surgeons in Ireland for his work in drug delivery, investigating the potential of injectable hydrogels to deliver cells, drugs and nanoparticles in the treatment of cancer and cardiovascular diseases. After achieving his PhD and completing a year of postdoctoral research, Conn pursued a career in academic publishing, before becoming a full-time science writer and editor, combining his experience within the biomedical sciences with his passion for written communication.

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