PMID- 35995968 OWN - NLM STAT- MEDLINE DCOM- 20220824 LR - 20221117 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 12 IP - 1 DP - 2022 Aug 22 TI - Saliva microbiome, dietary, and genetic markers are associated with suicidal ideation in university students. PG - 14306 LID - 10.1038/s41598-022-18020-2 [doi] LID - 14306 AB - 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. CI - (c) 2022. The Author(s). FAU - Ahrens, Angelica P AU - Ahrens AP AD - Microbiology and Cell Science Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA. FAU - Sanchez-Padilla, Diego E AU - Sanchez-Padilla DE AD - Microbiology and Cell Science Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA. FAU - Drew, Jennifer C AU - Drew JC AD - Microbiology and Cell Science Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA. FAU - Oli, Monika W AU - Oli MW AD - Microbiology and Cell Science Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA. FAU - Roesch, Luiz F W AU - Roesch LFW AD - Microbiology and Cell Science Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA. FAU - Triplett, Eric W AU - Triplett EW AD - Microbiology and Cell Science Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA. ewt@ufl.edu. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20220822 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Genetic Markers) RN - 0 (HLA Antigens) RN - 0 (HLA-DRB1 Chains) RN - 0 (Histocompatibility Antigens Class II) SB - IM MH - Alleles MH - Diet MH - Genetic Markers MH - Genetic Predisposition to Disease MH - HLA Antigens MH - HLA-DRB1 Chains/genetics MH - Histocompatibility Antigens Class II/genetics MH - Humans MH - *Microbiota/genetics MH - Saliva MH - Students MH - *Suicidal Ideation MH - Universities MH - Young Adult PMC - PMC9395396 COIS- The authors declare no competing interests. EDAT- 2022/08/23 06:00 MHDA- 2022/08/25 06:00 PMCR- 2022/08/22 CRDT- 2022/08/22 23:28 PHST- 2021/11/25 00:00 [received] PHST- 2022/08/03 00:00 [accepted] PHST- 2022/08/22 23:28 [entrez] PHST- 2022/08/23 06:00 [pubmed] PHST- 2022/08/25 06:00 [medline] PHST- 2022/08/22 00:00 [pmc-release] AID - 10.1038/s41598-022-18020-2 [pii] AID - 18020 [pii] AID - 10.1038/s41598-022-18020-2 [doi] PST - epublish SO - Sci Rep. 2022 Aug 22;12(1):14306. doi: 10.1038/s41598-022-18020-2.