Bacteriophages: Are they an overlooked driver of Parkinson’s disease?
The researchers, led by George, Tetz, M.D., Ph.D., Human Microbiology Institute, showed that the abundance of lytic Lactococcus phages was higher in PD patients when compared to healthy individuals. This abundance led to a 10-fold reduction in neurotransmitter-producing Lactococcus, suggesting the possible role of phages in neurodegeneration. Comparative analysis of the bacterial component also revealed significant decreases in Streptococcus spp. and Lactobacillus spp. in PD.
Lactococcus are regulators of gut permeability and are enteric dopamine producers, which plays a primary role in PD. “The depletion of lactococcus due to high numbers of strictly lytic phages in PD patients might be associated with PD development and directly linked to dopamine decrease as well as the development of gastrointestinal symptoms of PD,” said Dr. Tetz.
To explore bacterial and bacteriophage community compositions associated with PD, the researchers used shotgun metagenomics sequencing data of fecal microbiome from 32 patients with PD and 28 controls.
The results indicate that the decrease in Lactococci in the PD patients was due to the appearance of strictly lytic, virulent lactococcal phages belonging to the c2-like and 936 groups that are frequently isolated from dairy products. These results open a discussion on the role of environmental phages and phagobiota composition in health and disease.
“Bacteriophages have previously been overlooked as pathogenic factors, and the study points out their pivotal role in pathogenesis,” said Dr. Tetz. Future research is needed to explore bacterial viruses as a diagnostic and treatment target for therapeutic intervention.
ASM Microbe, the annual meeting of the American Society for Microbiology showcases the best microbial sciences in the world and provides a one-of-a-kind forum to explore the complete spectrum of microbiology. ASM Microbe is held in Atlanta, GA from June 7-11, 2018.
The American Society for Microbiology is the largest single life science society, composed of more than 30,000 scientists and hea
HMI’ bacteriophage research is in the Top 100 Scientific Reports Microbiology papers in 2017
NEW YORK, NY / ACCESSWIRE / April 18, 2018 / ‘Bacteriophages as potential new mammalian pathogens’ has been selected as one of the top 100 read microbiology papers for Scientific Reports in 2017*, New York based HumanMicrobiology Institute (HMI) announced today.
NEW YORK, Sept. 23, 2016 – Alzheimer’s, cancer and other incurable diseases such as Parkinson’s and dementia can be contagious, according to researchers at the Human Microbiology Institute, who have published research linking the diseases to newly discovered bacterial viruses.
In a recent article published in Gut Pathogens, HMI researchers George and Victor Tetz said they have linked the diseases to bacteriophages.
Viruses Called Bacteriophages Affect Bacteria in Mammal Gut Environment and May Cause Human Diseases, a Study from Human Microbiology Institute Reveals.
NEW YORK, NY, July 12, 2017 — Viruses called bacteriophages affect bacteria that populate mammal gut environment and may cause human diseases, according to the Human Microbiology Institute (HMI). The revolutionary findings were revealed today during an oral presentation at the largest European microbiologist gathering, FEMS-2017 in Spain.