A special type of test called immunofluorescence labeling and immunoblotting was used to screen the brains and find an oral bacterium called lipopolysaccharide.
Lipopolysaccharide, a component of Porphyromonas gingivalis, was found in four out of 10 Alzheimer’s disease brain samples. It was not found in any samples from the brains of people who did not have Alzheimer’s disease.
Oral Bacteria Found in Alzheimer’s Tissue
Image credits: AJ Can
Art and Science of Laboratory Medicine