Abstract

Here, salivary microbiota and major histocompatibility complex (MHC) human leukocyte antigen (HLA) alleles were compared between 47 (12.6%) young adults with recent suicidal ideation (SI) and 325 (87.4%) controls without recent SI. Several bacterial taxa were correlated with SI after controlling for sleep issues, diet, and genetics. Four MHC class II alleles were protective for SI including DRB1*04, which was absent in every subject with SI while present in 21.7% of controls. Increased incidence of SI was observed with four other MHC class II alleles and two MHC class I alleles. Associations between these HLA alleles and salivary bacteria were also identified. Furthermore, rs10437629, previously associated with attempted suicide, was correlated here with SI and the absence of Alloprevotella rava, a producer of an organic acid known to promote brain energy homeostasis. Hence, microbial-genetic associations may be important players in the diathesis-stress model for suicidal behaviors.

Details

Title
Saliva microbiome, dietary, and genetic markers are associated with suicidal ideation in university students
Author
Ahrens, Angelica P. 1 ; Sanchez-Padilla, Diego E. 1 ; Drew, Jennifer C. 1 ; Oli, Monika W. 1 ; Roesch, Luiz F. W. 1 ; Triplett, Eric W. 1 

 University of Florida, Microbiology and Cell Science Department, Institute of Food and Agricultural Sciences, Gainesville, USA (GRID:grid.15276.37) (ISNI:0000 0004 1936 8091) 
Publication year
2022
Publication date
2022
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2705224070
Copyright
© The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.