Increased occurrence of Treponema spp. and double-species infections in patients with Alzheimer's disease

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Publikace nespadá pod Filozofickou fakultu, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.
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NEMERGUT Michal BÁŤKOVÁ Tereza VIGAŠOVÁ Dana BARTOŠ Milan HLOZANKOVA Martina SMITH Andrea LIŠKOVÁ Barbora SHEARDOVÁ Kateřina VYHNALEK Martin HORT Jakub LACZO Jan KOVÁČOVÁ Ingrid ŠITINA Michal MATEJ Radoslav JANČÁLEK Radim MAREK Martin DAMBORSKÝ Jiří

Rok publikování 2022
Druh Článek v odborném periodiku
Časopis / Zdroj Science of the Total Environment
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www https://www.sciencedirect.com/science/article/pii/S0048969722042115?via%3Dihub
Doi http://dx.doi.org/10.1016/j.scitotenv.2022.157114
Klíčová slova Alzheimer'sdisease; Treponemaspp; Microbialinfection; Pathogen; Serum; PCR
Popis Although the link between microbial infections and Alzheimer's disease (AD) has been demonstrated in multiple studies, the involvement of pathogens in the development of AD remains unclear. Here, we investigated the fre-quency of the 10 most commonly cited viral (HSV-1, EBV, HHV-6, HHV-7, and CMV) and bacterial (Chlamydia pneumoniae, Helicobacter pylori, Borrelia burgdorferi, Porphyromonas gingivalis, and Treponema spp.) pathogens in serum, cerebrospinal fluid (CSF) and brain tissues of AD patients. We have used an in-house multiplex PCR kit for simultaneous detection of five bacterial and five viral pathogens in serum and CSF samples from 50 AD patients and 53 healthy controls (CTRL). We observed a significantly higher frequency rate of AD patients who tested positive for Treponema spp. compared to controls (AD: 62.2 %; CTRL: 30.3 %; p-value = 0.007). Fur-thermore, we confirmed a significantly higher occurrence of cases with two or more simultaneous infections in AD patients compared to controls (AD: 24 %; CTRL 7.5 %; p-value = 0.029). The studied pathogens were de-tected with comparable frequency in serum and CSF. In contrast, Borrelia burgdorferi, human herpesvirus 7, and human cytomegalovirus were not detected in any of the studied samples. This study provides further evidence of the association between microbial infections and AD and shows that paralleled analysis of multiple sample specimens provides complementary information and is advisable for future studies.
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