1
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Mohyuddin H, Laffon B, Teixeira JP, Costa S, Teixeira-Gomes A, Pásaro E, Constantine N, Dagdag A, Ortmeyer HK, Tizenberg B, Afram L, Yen P, Marano C, Lowry CA, Hoisington AJ, RachBeisel JA, Valdiglesias V, Lema-Arranz C, Fernández-Bertólez N, Maseda A, Millán-Calenti JC, Kovacs EJ, Gostner JM, Fuchs D, Brenner LA, Lorenzo-López L, Postolache TT. Toxoplasma gondii IgG Serointensity Is Positively Associated With Frailty. J Gerontol A Biol Sci Med Sci 2024; 79:glad228. [PMID: 37939652 PMCID: PMC10851338 DOI: 10.1093/gerona/glad228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Indexed: 11/10/2023] Open
Abstract
BACKGROUND Persistent inflammation related to aging ("inflammaging") is exacerbated by chronic infections and contributes to frailty in older adults. We hypothesized associations between Toxoplasma gondii (T. gondii), a common parasite causing an oligosymptomatic unremitting infection, and frailty, and secondarily between T. gondii and previously reported markers of immune activation in frailty. METHODS We analyzed available demographic, social, and clinical data in Spanish and Portuguese older adults [N = 601; age: mean (SD) 77.3 (8.0); 61% women]. Plasma T. gondii immunoglobulin G (IgG) serointensity was measured with an enzyme-linked immunosorbent assay. The Fried criteria were used to define frailty status. Validated translations of Mini-Mental State Examination, Geriatric Depression Scale, and the Charlson Comorbidity Index were used to evaluate confounders. Previously analyzed biomarkers that were significantly associated with frailty in both prior reports and the current study, and also related to T. gondii serointensity, were further accounted for in multivariable logistic models with frailty as outcome. RESULTS In T. gondii-seropositives, there was a significant positive association between T. gondii IgG serointensity and frailty, accounting for age (p = .0002), and resisting adjustment for multiple successive confounders. Among biomarkers linked with frailty, kynurenine/tryptophan and soluble tumor necrosis factor receptor II were positively associated with T. gondii serointensity in seropositives (p < .05). Associations with other biomarkers were not significant. CONCLUSIONS This first reported association between T. gondii and frailty is limited by a cross-sectional design and warrants replication. While certain biomarkers of inflammaging were associated with both T. gondii IgG serointensity and frailty, they did not fully mediate the T. gondii-frailty association.
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Affiliation(s)
- Hira Mohyuddin
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Psychiatry Residency Training Program, George Washington University, Washington, District of Columbia, USA
| | - Blanca Laffon
- Universidade da Coruña, Grupo DICOMOSA, CICA—Centro Interdisciplinar de Química e Bioloxía, Departamento de Psicología, Facultad de Ciencias de la Educación, Campus Elviña s/n, A Coruña, Spain
- Instituto de Investigación Biomédica de A Coruña (INIBIC), Oza, A Coruña, Spain
| | - João P Teixeira
- Environment Health Department, National Institute of Health Dr Ricardo Jorge, Porto, Portugal
- EPIUnit - Instituto de Saúde Pública da Universidade do Porto, Porto, Portugal
| | - Solange Costa
- Environment Health Department, National Institute of Health Dr Ricardo Jorge, Porto, Portugal
- EPIUnit - Instituto de Saúde Pública da Universidade do Porto, Porto, Portugal
| | - Armanda Teixeira-Gomes
- EPIUnit - Instituto de Saúde Pública da Universidade do Porto, Porto, Portugal
- School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Porto, Portugal
| | - Eduardo Pásaro
- Universidade da Coruña, Grupo DICOMOSA, CICA—Centro Interdisciplinar de Química e Bioloxía, Departamento de Psicología, Facultad de Ciencias de la Educación, Campus Elviña s/n, A Coruña, Spain
- Instituto de Investigación Biomédica de A Coruña (INIBIC), Oza, A Coruña, Spain
| | - Niel Constantine
- Institute of Human Virology and Department of Pathology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Aline Dagdag
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Heidi K Ortmeyer
- Baltimore VA Medical Center, Baltimore, Maryland, USA
- Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Boris Tizenberg
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Liubov Afram
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Poyu Yen
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Christopher Marano
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Christopher A Lowry
- Department of Integrative Physiology, Department of Psychology and Neuroscience, Center for Neuroscience, and Center for Microbial Exploration, University of Colorado Boulder, Boulder, Colorado, USA
- VA Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Aurora, Colorado, USA
| | - Andrew J Hoisington
- VA Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Aurora, Colorado, USA
- Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Jill A RachBeisel
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Vanessa Valdiglesias
- Instituto de Investigación Biomédica de A Coruña (INIBIC), Oza, A Coruña, Spain
- Universidade da Coruña, Grupo NanoToxGen, CICA—Centro Interdisciplinar de Química e Bioloxía, Departamento de Biología, Facultad de Ciencias, Campus A Zapateira s/n, A Coruña, Spain
| | - Carlota Lema-Arranz
- Universidade da Coruña, Grupo DICOMOSA, CICA—Centro Interdisciplinar de Química e Bioloxía, Departamento de Psicología, Facultad de Ciencias de la Educación, Campus Elviña s/n, A Coruña, Spain
- Instituto de Investigación Biomédica de A Coruña (INIBIC), Oza, A Coruña, Spain
| | - Natalia Fernández-Bertólez
- Instituto de Investigación Biomédica de A Coruña (INIBIC), Oza, A Coruña, Spain
- Universidade da Coruña, Grupo NanoToxGen, CICA—Centro Interdisciplinar de Química e Bioloxía, Departamento de Biología, Facultad de Ciencias, Campus A Zapateira s/n, A Coruña, Spain
| | - Ana Maseda
- Universidade da Coruña, Gerontology and Geriatrics Research Group, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), A Coruña, Spain
| | - José C Millán-Calenti
- Universidade da Coruña, Gerontology and Geriatrics Research Group, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), A Coruña, Spain
| | - Elizabeth J Kovacs
- VA Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Aurora, Colorado, USA
- Department of Surgery, Division of GI, Trauma and Endocrine Surgery, Alcohol Research Program, Burn Research Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, ColoradoUSA
| | - Johanna M Gostner
- Institute of Medical Biochemistry, Biocenter, Innsbruck Medical University, Innsbruck, Austria
| | - Dietmar Fuchs
- Institute of Biological Chemistry, Biocenter, Innsbruck Medical University, Innsbruck, Austria
| | - Lisa A Brenner
- VA Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Aurora, Colorado, USA
- Departments of Psychiatry, Physical Medicine and Rehabilitation, and Neurology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Laura Lorenzo-López
- Universidade da Coruña, Gerontology and Geriatrics Research Group, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), A Coruña, Spain
| | - Teodor T Postolache
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland, USA
- VA Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Aurora, Colorado, USA
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2
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Reis DJ, Yen P, Tizenberg B, Gottipati A, Postolache SY, De Riggs D, Nance M, Dagdag A, Plater L, Federline A, Grassmeyer R, Dagdag A, Akram F, Ozorio Dutra SV, Gragnoli C, RachBeisel JA, Volkov J, Bahraini NH, Stiller JW, Brenner LA, Postolache TT. Longitude-based time zone partitions and rates of suicide. J Affect Disord 2023; 339:933-942. [PMID: 37481129 PMCID: PMC10870927 DOI: 10.1016/j.jad.2023.07.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 06/19/2023] [Accepted: 07/14/2023] [Indexed: 07/24/2023]
Abstract
BACKGROUND Increasing evidence suggests that conditions with decreased morning and increased evening light exposure, including shift work, daylight-saving time, and eveningness, are associated with elevated mortality and suicide risk. Given that the alignment between the astronomical, biological, and social time varies across a time zone, with later-shifted daylight exposure in the western partition, we hypothesized that western time zone partitions would have higher suicide rates than eastern partitions. METHODS United States (U.S.) county-level suicide and demographic data, from 2010 to 2018, were obtained from a Centers for Disease Control database. Using longitude and latitude, counties were sorted into the western, middle, or eastern partition of their respective time zones, as well as the northern and southern halves of the U.S. Linear regressions were used to estimate the associations between suicide rates and time zone partitions, adjusting for gender, race, ethnicity, age group, and unemployment rates. RESULTS Data were available for 2872 counties. Across the U.S., western partitions had statistically significantly higher rates of suicide compared to eastern partitions and averaged up to two additional yearly deaths per 100,000 people (p < .001). LIMITATIONS Ecological design and limited adjustment for socioeconomic factors. CONCLUSIONS To our knowledge, this is the first study of the relationship between longitude-based time zone partitions and suicide. The results were consistent with the hypothesized elevated suicide rates in the western partitions, and concordant with previous reports on cancer mortality and transportation fatalities. The next step is to retest the hypothesis with individual-level data, accounting for latitude, photoperiodic changes, daylight-saving time, geoclimatic variables, physical and mental health indicators, as well as socioeconomic adversity and protection.
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Affiliation(s)
- Daniel J Reis
- VA Rocky Mountain Mental Illness Research, Education, and Clinical Center for Veteran Suicide Prevention, Aurora, CO, USA; Department of Psychiatry, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
| | - Poyu Yen
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Boris Tizenberg
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Anurag Gottipati
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Sonia Y Postolache
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Demitria De Riggs
- VISN 5 Capitol Health Care Network Mental Illness Research Education and Clinical Center, Baltimore, MD, USA
| | - Morgan Nance
- VA Rocky Mountain Mental Illness Research, Education, and Clinical Center for Veteran Suicide Prevention, Aurora, CO, USA; Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Alexandra Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Lynn Plater
- VISN 5 Capitol Health Care Network Mental Illness Research Education and Clinical Center, Baltimore, MD, USA
| | - Amanda Federline
- VISN 5 Capitol Health Care Network Mental Illness Research Education and Clinical Center, Baltimore, MD, USA
| | - Riley Grassmeyer
- VA Rocky Mountain Mental Illness Research, Education, and Clinical Center for Veteran Suicide Prevention, Aurora, CO, USA
| | - Aline Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Faisal Akram
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; Psychiatry Residency Training, Saint Elizabeth's Hospital, Department of Behavioral Health, Washington, DC, USA
| | | | - Claudia Gragnoli
- Department of Public Health Sciences, Penn State College of Medicine, Hershey, PA, USA; Division of Endocrinology, Department of Medicine, Creighton University School of Medicine, Omaha, NE, USA
| | - Jill A RachBeisel
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Janna Volkov
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; Psychiatry Residency Training, Saint Elizabeth's Hospital, Department of Behavioral Health, Washington, DC, USA
| | - Nazanin H Bahraini
- VA Rocky Mountain Mental Illness Research, Education, and Clinical Center for Veteran Suicide Prevention, Aurora, CO, USA; Department of Psychiatry, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - John W Stiller
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; Saint Elizabeth's Hospital, Neurology Consultation Service, Washington, DC, USA; Maryland State Athletic Commission, Baltimore, MD, USA
| | - Lisa A Brenner
- VA Rocky Mountain Mental Illness Research, Education, and Clinical Center for Veteran Suicide Prevention, Aurora, CO, USA; Department of Psychiatry, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Denver, CO, USA
| | - Teodor T Postolache
- VA Rocky Mountain Mental Illness Research, Education, and Clinical Center for Veteran Suicide Prevention, Aurora, CO, USA; Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; VISN 5 Capitol Health Care Network Mental Illness Research Education and Clinical Center, Baltimore, MD, USA; Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Denver, CO, USA
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3
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Postolache TT, Upadhyaya SK, Spector AM, Mohyuddin I, Constantine N, Ernst RK, Wadhawan A, Dutra SVO, Dagdag A, Makkar H, Lowry CA, Akram F, Fuchs D, Brenner LA, Groer MW, Reynolds MA. Decreasing Tryptophan and Increasing Neopterin Plasma Levels During Pregnancy are Associated with High First Trimester Porphyromonas gingivalis K-Serotype IgG Serointensity in a Cohort of Hispanic Women. Curr Top Med Chem 2022; 22:2126-2144. [PMID: 35379151 DOI: 10.2174/1568026622666220404115543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 01/06/2022] [Accepted: 01/13/2022] [Indexed: 12/16/2022]
Abstract
BACKGROUND Immune activation or high levels of stress may lead to increased metabolism of tryptophan during pregnancy. Porphyromonas gingivalis (Pg), the "keystone" periodontal pathogen, induces immune and indoleamine 2,3-dioxygenase (IDO) activation. Thus, we hypothesized that larger gestational decreases in tryptophan and elevations in neopterin and kynurenine would occur in pregnant women with elevated IgG antibodies to Pg capsular (K) serotypes. METHODS Venous blood of 52 Hispanic pregnant women with a mean age (SD) of 31.8 (5.9) years was sampled once per trimester of pregnancy (V1, V2, V3), and plasma was obtained and stored. ELISAs were used to measure Pg capsular (K) serotype IgG serointensity (V1 only) and neopterin levels (V1-V3). Tryptophan and kynurenine (V1-V3) were measured with high-performance liquid chromatography. The participants having IgG serointensity for any of the seven Pg K serotypes in the highest quartile were defined as the "High PgK_IgG" group and those having IgG serointensity for all K serotypes in the lowest three quartiles were defined as the "Low PgK_IgG" group. Statistics included multivariable linear and nonparametric methods. RESULTS Significant decreases in plasma tryptophan levels and increases in neopterin during gestation were found in "High PgK_IgG" women but not in "Low PgK_IgG" women. Kynurenine changes were not significantly different between the two groups. CONCLUSION If replicated in larger studies and further characterized clinically, radiologically, and microbiologically, our results may potentially lead to novel interventional targets, as well as the development of more complete prognostic and predictive interactive biomarkers for adverse obstetrical outcomes and peripartum depression, and their prevention.
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Affiliation(s)
- Teodor T Postolache
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA.,Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Aurora, CO, USA.,Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO, USA.,VISN 5 Capitol Health Care Network Mental Illness Research Education and Clinical Center (MIRECC), Baltimore, MD, USA
| | - Sanjaya K Upadhyaya
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Anna M Spector
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Psychiatry, Saint Elizabeths Hospital, Washington DC, USA
| | - Iqra Mohyuddin
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA.,School of Dentistry, University of Maryland, Baltimore, MD, USA
| | - Niel Constantine
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Robert K Ernst
- Department of Microbial Pathogenesis, School of Dentistry, University of Maryland, Baltimore, MD, USA
| | - Abhishek Wadhawan
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Psychiatry, Saint Elizabeths Hospital, Washington DC, USA
| | - Samia Valeria Ozorio Dutra
- College of Nursing, University of South Florida, Tampa, FL, USA.,College of Nursing, University of Tennessee, Knoxville, Knoxville, TN, USA
| | - Aline Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Hina Makkar
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Psychiatry, Saint Elizabeths Hospital, Washington DC, USA
| | - Christopher A Lowry
- Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Aurora, CO, USA.,Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO, USA.,Department of Integrative Physiology, Center for Neuroscience, and Center for Microbial Exploration, University of Colorado Boulder, Boulder, CO, USA.,Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz School of Medicine, Aurora, CO, USA
| | - Faisal Akram
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Psychiatry, Saint Elizabeths Hospital, Washington DC, USA
| | - Dietmar Fuchs
- Institute of Biological Chemistry, Biocenter, Medical University of Innsbruck, Innsbruck A-6020, Austria
| | - Lisa A Brenner
- Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Aurora, CO, USA.,Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO, USA.,Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz School of Medicine, Aurora, CO, USA.,Department of Neurology, University of Colorado Anschutz School of Medicine, Aurora, CO, USA
| | - Maureen W Groer
- College of Nursing, University of South Florida, Tampa, FL, USA
| | - Mark A Reynolds
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD, USA
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4
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Spector A, Wadhawan A, Constantine N, Ryan K, Mohyuddin I, Dagdag A, Brenner L, Daue M, Schifferle R, Ernst R, Mitchell B, Reynolds M, Postolache T. 136 Sleep and Porphyromonas gingivalis K-Capsular IgG Serotypes: A Study in the Old Order Amish. Sleep 2021. [DOI: 10.1093/sleep/zsab072.135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Sleep problems and periodontal disease have a bidirectional relationship and are independently linked with depression, dementia, and metabolic disease. Inadequate sleep can worsen inflammation, a hallmark of periodontal disease, and the activation of the immune system can alter sleep/wake cycles. A key player in periodontal disease is Porphyromonas gingivalis, a bacteria that can translocate to the brain and induce miRNA’s. Antibodies to P. gingivalis capsular virulence factors, K1-7, have been used to estimate P. gingivalis virulence. This study was conducted to explore cross-sectional associations between seropositivity of K serotypes of P. gingivalis and measures of self-reported impairment in sleep. If identified, these links would provide a rationale to initiate causality and mediation studies. We hypothesized that sleep impairment is positively associated with P. gingivalis K IgG serointensity.
Methods
880 Old Order Amish aged 44.8 (SD: 17.2 years); 360 men (40.91%), 520 women (59.09%) responded to an adapted Pittsburgh-Sleep-Quality-Index questionnaire. IgG serointensity to 7 K-capsular P. gingivalis serotypes were measured with ELISAs. We tested for the association of log-transformed serotype IgG intensity and positivity (successively defined as within the top 5% and 25% for each serotype) with sleep parameters (as binary and continuous variables) using linear and logistic regressions, adjusting for age and sex.
Results
We confirmed no hypothesized associations between any of the sleep problems on the PSQI and K serotype serointensity and seropositivity. Exploratory analysis returned a negative association of log-transformed K3 IgG with daytime sleepiness (p=0.01); however, this did not resist adjustment for multiple comparisons and was inconsistent with the direction of the hypothesis.
Conclusion
Strengths of the study include the reduced smoking prevalence in the Amish and the relatively homogenous lifestyle, reducing confounding. The results imply P. gingivalis serotypes are not associated with sleep disturbance. Limitations are self-reporting of sleep, cross-sectional approach and limited generalizability. Results do not support an association between P. gingivalis K serotypes and sleep-problems.
Support (if any)
MVM-CoRE
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Affiliation(s)
| | | | - Niel Constantine
- Institute of Human Virology and Department of Pathology, University of Maryland School of Medicine
| | - Kathy Ryan
- University of Maryland School of Medicine, Division of Endocrinology, Diabetes and Nutrition
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Wadhawan A, Reynolds MA, Makkar H, Scott AJ, Potocki E, Hoisington AJ, Brenner LA, Dagdag A, Lowry CA, Dwivedi Y, Postolache TT. Periodontal Pathogens and Neuropsychiatric Health. Curr Top Med Chem 2021; 20:1353-1397. [PMID: 31924157 DOI: 10.2174/1568026620666200110161105] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 12/04/2019] [Accepted: 12/04/2019] [Indexed: 02/08/2023]
Abstract
Increasing evidence incriminates low-grade inflammation in cardiovascular, metabolic diseases, and neuropsychiatric clinical conditions, all important causes of morbidity and mortality. One of the upstream and modifiable precipitants and perpetrators of inflammation is chronic periodontitis, a polymicrobial infection with Porphyromonas gingivalis (P. gingivalis) playing a central role in the disease pathogenesis. We review the association between P. gingivalis and cardiovascular, metabolic, and neuropsychiatric illness, and the molecular mechanisms potentially implicated in immune upregulation as well as downregulation induced by the pathogen. In addition to inflammation, translocation of the pathogens to the coronary and peripheral arteries, including brain vasculature, and gut and liver vasculature has important pathophysiological consequences. Distant effects via translocation rely on virulence factors of P. gingivalis such as gingipains, on its synergistic interactions with other pathogens, and on its capability to manipulate the immune system via several mechanisms, including its capacity to induce production of immune-downregulating micro-RNAs. Possible targets for intervention and drug development to manage distal consequences of infection with P. gingivalis are also reviewed.
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Affiliation(s)
- Abhishek Wadhawan
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, United States.,Department of Psychiatry, Saint Elizabeths Hospital, Washington, D.C. 20032, United States
| | - Mark A Reynolds
- Department of Advanced Oral Sciences & Therapeutics, University of Maryland School of Dentistry, Baltimore 21201, United States
| | - Hina Makkar
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, United States
| | - Alison J Scott
- Department of Microbial Pathogenesis, University of Maryland School of Dentistry, Baltimore, United States
| | - Eileen Potocki
- VA Maryland Healthcare System, Baltimore VA Medical Center, Baltimore, United States
| | - Andrew J Hoisington
- Air Force Institute of Technology, Wright-Patterson Air Force Base, United States
| | - Lisa A Brenner
- Departments of Psychiatry, Neurology, and Physical Medicine & Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, United States.,Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Aurora, United States.,Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, United States
| | - Aline Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, United States
| | - Christopher A Lowry
- Departments of Psychiatry, Neurology, and Physical Medicine & Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, United States.,Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Aurora, United States.,Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, United States.,Department of Integrative Physiology, Center for Neuroscience and Center for Microbial Exploration, University of Colorado Boulder, Boulder, United States.,Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Rocky Mountain Regional Veterans Affairs Medical Center (RMRVAMC), Aurora, United States
| | - Yogesh Dwivedi
- Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Alabama, United States
| | - Teodor T Postolache
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, United States.,Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Aurora, United States.,Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, United States.,Mental Illness Research, Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 5, VA Capitol Health Care Network, Baltimore, United States
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6
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Postolache TT, Wadhawan A, Rujescu D, Hoisington AJ, Dagdag A, Baca-Garcia E, Lowry CA, Okusaga OO, Brenner LA. Toxoplasma gondii, Suicidal Behavior, and Intermediate Phenotypes for Suicidal Behavior. Front Psychiatry 2021; 12:665682. [PMID: 34177652 PMCID: PMC8226025 DOI: 10.3389/fpsyt.2021.665682] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/30/2021] [Indexed: 12/27/2022] Open
Abstract
Within the general literature on infections and suicidal behavior, studies on Toxoplasma gondii (T. gondii) occupy a central position. This is related to the parasite's neurotropism, high prevalence of chronic infection, as well as specific and non-specific behavioral alterations in rodents that lead to increased risk taking, which are recapitulated in humans by T. gondii's associations with suicidal behavior, as well as trait impulsivity and aggression, mental illness and traffic accidents. This paper is a detailed review of the associations between T. gondii serology and suicidal behavior, a field of study that started 15 years ago with our publication of associations between T. gondii IgG serology and suicidal behavior in persons with mood disorders. This "legacy" article presents, chronologically, our primary studies in individuals with mood disorders and schizophrenia in Germany, recent attempters in Sweden, and in a large cohort of mothers in Denmark. Then, it reviews findings from all three meta-analyses published to date, confirming our reported associations and overall consistent in effect size [ranging between 39 and 57% elevation of odds of suicide attempt in T. gondii immunoglobulin (IgG) positives]. Finally, the article introduces certain links between T. gondii and biomarkers previously associated with suicidal behavior (kynurenines, phenylalanine/tyrosine), intermediate phenotypes of suicidal behavior (impulsivity, aggression) and state-dependent suicide risk factors (hopelessness/dysphoria, sleep impairment). In sum, an abundance of evidence supports a positive link between suicide attempts (but not suicidal ideation) and T. gondii IgG (but not IgM) seropositivity and serointensity. Trait impulsivity and aggression, endophenotypes of suicidal behavior have also been positively associated with T. gondii seropositivity in both the psychiatrically healthy as well as in patients with Intermittent Explosive Disorder. Yet, causality has not been demonstrated. Thus, randomized interventional studies are necessary to advance causal inferences and, if causality is confirmed, to provide hope that an etiological treatment for a distinct subgroup of individuals at an increased risk for suicide could emerge.
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Affiliation(s)
- Teodor T Postolache
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, United States.,Veterans Health Administration, Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO, United States.,Mental Illness Research, Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 5, VA Capitol Health Care Network, Baltimore, MD, United States
| | - Abhishek Wadhawan
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, United States.,Department of Psychiatry, Saint Elizabeth's Hospital, Washington, DC, United States
| | - Dan Rujescu
- Department of Psychiatry, Psychotherapy and Psychosomatics, University of Halle, Halle, Germany
| | - Andrew J Hoisington
- Veterans Health Administration, Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO, United States.,Department of Systems Engineering and Management, Air Force Institute of Technology, Dayton, OH, United States.,Department of Physical Medicine & Rehabilitation, University of Colorado, Anschutz Medical Campus, Aurora, CO, United States
| | - Aline Dagdag
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Enrique Baca-Garcia
- Department of Psychiatry, Jimenez Diaz Foundation Hospital, Madrid, Spain.,Department of Psychiatry, Madrid Autonomous University, Madrid, Spain.,Department of Psychiatry, Rey Juan Carlos University Hospital, Móstoles, Spain.,Department of Psychiatry, General Hospital of Villalba, Madrid, Spain.,Department of Psychiatry, Infanta Elena University Hospital, Valdemoro, Spain.,Universidad Catolica del Maule, Talca, Chile.,Department of Psychiatry, Centre Hospitalier Universitaire de Nîmes, Nîmes, France
| | - Christopher A Lowry
- Veterans Health Administration, Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO, United States.,Department of Physical Medicine & Rehabilitation, University of Colorado, Anschutz Medical Campus, Aurora, CO, United States.,Department of Integrative Physiology, Center for Neuroscience, Center for Microbial Exploration, University of Colorado Boulder, Boulder, CO, United States
| | - Olaoluwa O Okusaga
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, United States.,Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, United States.,Michael E DeBakey VA Medical Center, Houston, TX, United States
| | - Lisa A Brenner
- Veterans Health Administration, Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO, United States.,Department of Physical Medicine & Rehabilitation, University of Colorado, Anschutz Medical Campus, Aurora, CO, United States.,Department of Psychiatry & Neurology, University of Colorado, Anschutz Medical Campus, Aurora, CO, United States
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Bourassa KA, Postolache TT, Dagdag A, Fuchs D, Okusaga OO. Plasma soluble P-selectin correlates with triglycerides and nitrite in overweight/obese patients with schizophrenia. Pteridines 2020; 31:61-67. [PMID: 32982068 PMCID: PMC7518413 DOI: 10.1515/pteridines-2020-0012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: Soluble P-selectin (sP-selectin) is associated with risk factors for cardiovascular disease (CVD) but this association has not been evaluated in patients with schizophrenia. This study primarily evaluated the association of sP-selectin with plasma lipids and nitrite (NO2−) respectively in overweight/obese adults with schizophrenia. Methods: One-hundred and six patients with schizophrenia (mean age 32.9 years; 71.60% male) were recruited from a psychiatric hospital. Participants completed a structured interview and provided a fasting blood sample. Body mass index (BMI) was used to divide the sample into normal weight and overweight/obese groups. Pearson’s and partial correlation coefficients (controlling for age, sex, race, education, and inflammation) were calculated to examine the association of sP-selectin with plasma lipids, and NO2− in the overweight/obese patients (primary analysis), as well as in the normal weight patients and the total sample (exploratory analyses). Results: After controlling for potential confounders, sP-selectin positively correlated with triglycerides (r = 0.38, p = 0.01) and NO2− (r = 0.40, p < 0.01) in the overweight/obese group only. Conclusions: Future longitudinal studies should evaluate the utility of sP-selectin as a biomarker of CVD in overweight/obese adults with schizophrenia (for example, by relating sP-selectin to incidence of cardiovascular events).
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Affiliation(s)
| | - Teodor T Postolache
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA, Veterans Health Administration, Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Denver Veterans Affairs Medical Center (VAMC), Aurora, CO, USA, Military and Veteran Microbiome Consortium for Research and Education (MVM-CoRE), Aurora, CO, USA, VISN 5 Capitol Health Care Network Mental Illness Research Education and Clinical Center (MIRECC), Baltimore, MD, USA
| | - Aline Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Dietmar Fuchs
- Division of Biological Chemistry, Biocenter Innsbruck Medical University, Innsbruck, Austria
| | - Olaoluwa O Okusaga
- Michael E. DeBakey VA Medical Center, Houston, TX, USA, Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
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Postolache TT, Wadhawan A, Daue ML, Dagdag A, Reynolds MA. 1061 Problems During Daytime Due To Poor Sleep Are Associated With Indicators Of Poor Dental Health In A Largely Non-smoking Population. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Growing evidence connects periodontal disease, a major and modifiable cause of local and systemic inflammation, with metabolic and cardiovascular morbidity and mortality, as well as mental illness. Sleep has been previously predictively associated with metabolic and psychiatric morbidity and mortality, and has recently been linked with periodontal disease. We are now evaluating associations between self-reported insomnia measures and surrogate indicators of periodontal disease in a population with a very low prevalence of smoking — a major confounder in previous studies.
Methods
Dental and sleep questionnaires (Pittsburgh Sleep Quality Index) were obtained from 3881 Old Order Amish from Lancaster county. Difficulty falling or staying asleep, sleep quality, problems during the day due to poor sleep, and sleepiness during daytime were related to self-reported loose teeth, partial dentures, full dentures and any dentures using linear models with adjustment for age and sex.
Results
Significant associations emerged between problems falling asleep and loose teeth (p<0.05), problems staying asleep and any dentures (p<0.05), sleep quality with loose teeth and partial, as well as complete dentures (p<0.05 for both). Problems during daytime due to poor sleep were associated with loose teeth (p<0.05), any dentures (p<0.003) and full dentures (p<0.0001 — the only associations resisting Bonferroni correction). Sleepiness during daytime, which is the most important marker associated with sleep apnea was not associated with any dental health measures.
Conclusion
Limitations include not accounting for family aggregation, limited generalizability, not fully differentiating between respiratory versus non-respiratory sleep impairment, and periodontal versus traumatic dental pathology. Yet, the results of our study, which minimizes the strong potential confounding by smoking, confirm associations between sleep-related problems and periodontal disease, and justify future longitudinal and interventional research to dissect causality and identify multi-target treatment modalities.
Support
This work was supported by the Mid-Atlantic Nutrition Obesity Research Center Preliminary Developmental NORC grant (Postolache, PI), a sub-award of the parent grant P30 DK072488 (Mitchell, PI), and intramural funds from the University of Maryland, Baltimore.
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Affiliation(s)
- T T Postolache
- Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD
- Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran Microbiome Consortium for Research and Education (MVM-CoRE), Denver, CO
- Mental Illness Research, Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 5, VA Capitol Health Care Network, Baltimore, MD
| | - A Wadhawan
- Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD
- Saint Elizabeth’s Hospital, Department of Psychiatry, Washington, DC
| | - M L Daue
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD
- Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD
- Geriatrics Research and Education Clinical Center, Veterans Affairs Medical Center, Baltimore, MD
| | - A Dagdag
- Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD
| | - M A Reynolds
- Department of Advanced Oral Sciences & Therapeutics, University of Maryland School of Dentistry, Baltimore, MD
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Duffy AR, O'Connell JR, Pavlovich M, Ryan KA, Lowry CA, Daue M, Raheja UK, Brenner LA, Markon AO, Punzalan CM, Dagdag A, Hill DE, Pollin TI, Seyfang A, Groer MW, Mitchell BD, Postolache TT. Toxoplasma gondii Serointensity and Seropositivity: Heritability and Household-Related Associations in the Old Order Amish. Int J Environ Res Public Health 2019; 16:E3732. [PMID: 31623376 PMCID: PMC6801611 DOI: 10.3390/ijerph16193732] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/27/2019] [Accepted: 09/30/2019] [Indexed: 01/29/2023]
Abstract
Toxoplasma gondii (T. gondii) is an intracellular parasite infecting one third of the world's population. Latent T. gondii infection has been associated with mental illness, including schizophrenia and suicidal behavior. T. gondii IgG antibody titers were measured via ELISA. The heritability of T. gondii IgG was estimated using a mixed model that included fixed effects for age and sex and random kinship effect. Of 2017 Old Order Amish participants, 1098 had positive titers (54.4%). The heritability for T. gondii serointensity was estimated to be 0.22 (p = 1.7 × 10-8 and for seropositivity, it was estimated to be 0.28 (p = 1.9 × 10-5). Shared household environmental effects (i.e., household effects) were also determined. Household effects, modeled as a random variable, were assessed as the phenotypic covariance between any two individuals who had the same current address (i.e., contemporaneous household), and nuclear household (i.e., the phenotypic covariance between parents and children only, not other siblings or spouses). Household effects did not account for a significant proportion of variance in either T. gondii serointensity or T. gondii seropositivity. Our results suggest a significant familial aggregation of T. gondii serointensity and seropositivity with significant heritability. The shared household does not contribute significantly to family aggregation with T. gondii, suggesting that there are possible unmeasured non-household shared and non-shared environmental factors that may play a significant role. Furthermore, the small but significant heritability effects justify the exploration of genetic vulnerability to T. gondii exposure, infection, virulence, and neurotropism.
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Affiliation(s)
- Allyson R Duffy
- Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD 20201, USA.
- College of Nursing, University of South Florida, Tampa, FL 33612, USA.
| | - Jeffrey R O'Connell
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
- Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
| | - Mary Pavlovich
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
- Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
| | - Kathleen A Ryan
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
- Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
| | - Christopher A Lowry
- Veterans Health Administration, Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Rocky Mountain Regional Veterans Affairs Medical Center (RMRVAMC), Aurora, CO 80045, USA.
- Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
- Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO 80045, USA.
- Department of Integrative Physiology and Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA.
- Center for Neuroscience, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
| | - Melanie Daue
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
- Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
| | - Uttam K Raheja
- Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD 20201, USA.
| | - Lisa A Brenner
- Veterans Health Administration, Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Rocky Mountain Regional Veterans Affairs Medical Center (RMRVAMC), Aurora, CO 80045, USA.
- Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
- Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO 80045, USA.
| | - André O Markon
- US Food and Drug Administration, College Park, MD 20740, USA.
| | | | - Aline Dagdag
- Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD 20201, USA.
| | - Dolores E Hill
- US Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705, USA.
| | - Toni I Pollin
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
- Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
| | - Andreas Seyfang
- College of Medicine, University of South Florida, Tampa, FL 33612, USA.
| | - Maureen W Groer
- College of Nursing, University of South Florida, Tampa, FL 33612, USA.
| | - Braxton D Mitchell
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
- Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
- Geriatrics Research Education and Clinical Center (GRECC), Baltimore, MD 21201, USA.
| | - Teodor T Postolache
- Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD 20201, USA.
- Veterans Health Administration, Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Rocky Mountain Regional Veterans Affairs Medical Center (RMRVAMC), Aurora, CO 80045, USA.
- Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO 80045, USA.
- Mental Illness Research, Education, and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN 5), VA Capitol Health Care Network, Baltimore, MD 21201, USA.
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Wadhawan A, Stiller JW, Potocki E, Okusaga O, Dagdag A, Lowry CA, Benros ME, Postolache TT. Traumatic Brain Injury and Suicidal Behavior: A Review. J Alzheimers Dis 2019; 68:1339-1370. [DOI: 10.3233/jad-181055] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Abhishek Wadhawan
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, USA
- Saint Elizabeths Hospital, Psychiatry Residency Training Program, Washington, DC, USA
| | - John W. Stiller
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, USA
- Saint Elizabeths Hospital, Neurology Consultation Service, Washington, DC, USA
- Maryland State Athletic Commission, Baltimore, MD, USA
| | - Eileen Potocki
- VA Maryland Healthcare System, Baltimore VA Medical Center, Baltimore, MD, USA
| | - Olaoluwa Okusaga
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, USA
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
- Michael E DeBakey VA Medical Center, Houston, TX, USA
| | - Aline Dagdag
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Psychiatry, University of Maryland Medical Center, Baltimore, MD, USA
| | - Christopher A. Lowry
- Department of Integrative Physiology and Center for Neuroscience, University of Colorado Boulder, Boulder, CO, USA
- Department of Physical Medicine and Rehabilitation and Center for Neuroscience, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO, USA
| | - Michael E. Benros
- Mental Health Centre Copenhagen, Copenhagen University Hospital, Copenhagen, Denmark
| | - Teodor T. Postolache
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, USA
- Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO, USA
- Mental Illness Research, Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 5, VA Capitol Health Care Network, Baltimore, MD, USA
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11
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Postolache TT, Corona C, Man Z, Daue M, Wadhawan A, Dagdag A, Ryan K, Groer MW, Stiller JW, Mitchell BD. 0061 Sleep Duration And Timing In Relationship to Toxoplasma Gondii Igg Serointensity In The Old Order Amish. Sleep 2019. [DOI: 10.1093/sleep/zsz067.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - Cristine Corona
- Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Zhang Man
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - Melanie Daue
- University of Maryland School of Medicine, Baltimore, MD, USA
| | | | - Aline Dagdag
- Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Kathy Ryan
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - Maureen W Groer
- Bio-Behavioral Research Laborator, University of South Florida, FL, USA
| | - John W Stiller
- University of Maryland School of Medicine, Baltimore, MD, USA
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12
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Corona CC, Zhang M, Wadhawan A, Daue ML, Groer MW, Dagdag A, Lowry CA, Hoisington AJ, Ryan KA, Stiller JW, Fuchs D, Mitchell BD, Postolache TT. Toxoplasma gondii IgG associations with sleep-wake problems, sleep duration and timing. Pteridines 2019; 30:1-9. [PMID: 30918422 PMCID: PMC6433149 DOI: 10.1515/pteridines-2019-0001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background: Evidence links Toxoplasmagondii (T. gondii), a neurotropic parasite, with schizophrenia, mood disorders and suicidal behavior, all of which are associated and exacerbated by disrupted sleep. Moreover, low-grade immune activation and dopaminergic overstimulation, which are consequences of T. gondii infection, could alter sleep patterns and duration. Methods: Sleep data on 833 Amish participants [mean age (SD) = 44.28 (16.99) years; 59.06% women] were obtained via self-reported questionnaires that assessed sleep problems, duration and timing. T. gondii IgG was measured with ELISA. Data were analyzed using multivariable logistic regressions and linear mixed models, with adjustment for age, sex and family structure. Results: T. gondii seropositives reported less sleep problems (p < 0.005) and less daytime problems due to poor sleep (p < 0.005). Higher T. gondii titers were associated with longer sleep duration (p < 0.05), earlier bedtime (p< 0.005) earlier mid-sleep time (p < 0.05). Conclusions: It seems unlikely that sleep mediates the previously reported associations between T. gondii and mental illness. Future longitudinal studies with objective measures are necessary to replicate our findings.
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Affiliation(s)
- Celine C Corona
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Man Zhang
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimers, MD 21201, USA
| | - Abhishek Wadhawan
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA, Saint Elizabeths Hospital, Psychiatry Residency Program, Washington, DC 20032, USA
| | - Melanie L Daue
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimers, MD 21201, USA, Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA, Geriatrics Research and Education Clinical Center, Veteran Affairs Medical Center, Baltimore, MD 21201, USA
| | - Maureen W Groer
- College of Nursing, University of South Florida College of Nursing, Tampa, FL 33612, USA
| | - Aline Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA, Psychiatry Adult Inpatient & Behavioral Health, University of Maryland Medical Center, Baltimore, MD 21201, USA
| | - Christopher A Lowry
- Department of Integrative Physiology and Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA; Department of Physical Medicine and Rehabilitation and Center for Neuroscience, University of Colorado Anschutz Medical Campus, Aurora, CO80045, USA, Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran. Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO80 045, USA
| | - Andrew J Hoisington
- Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran. Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO80 045, USA, Department of Systems Engineering and Management, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433, USA
| | - Kathleen A Ryan
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimers, Md 21201, USA, Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - John W Stiller
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA, Saint Elizabeths Hospital, Department of Neurology, Washington DC 20032, USA; Maryland State Athletic Commission, Baltimore, MD 21202, USA
| | - Dietmar Fuchs
- Division of Biological Chemistry, Biocenter, Innsbruck Medical University, Innsbruck, Austria
| | - Braxton D Mitchell
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimers, MD 21201, USA, Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA, Geriatrics Research and Education Clinical Center, Veteran Affairs Medical Center, Baltimore, MD 21201, USA
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13
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Wadhawan A, Hill DE, Dagdag A, Mohyuddin H, Donnelly P, Jones JL, Postolache TT. No evidence for airborne transmission of Toxoplasma gondii in a very high prevalence area in Lancaster County. Pteridines 2018; 29:172-178. [PMID: 31649420 PMCID: PMC6812650 DOI: 10.1515/pteridines-2018-0015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background: Toxoplasma gondii (T. gondii) has been associated with acute food-borne illness, chronic low-grade inflammation, neuropsychiatric conditions and reactivation of chronic latent infection in immunocompetent hosts. Primary infection with T. gondii in pregnant women can lead to congenital toxoplasmosis. In addition to well-known oral tissue-cyst or oocyst ingestion, we hypothesized that the very high prevalence of T. gondii in certain populations exposed to agricultural dust could be, in part, a consequence of airborne infection with oocysts. Methods: Wo collected environmental dust samples from an area with a reportedly high T. gondii seroprevalence in the Old Order Amish population, in Lancaster, Pennsylvania. Samples included: a) air filters from air-conditioning units; b) swabs of settled dust; and c) vacuum filters containing airborne field dust. Pools of the swabs and shredded sub-samples of the air filters were fed to pigs, with inoculation into mice of heart tissue from seroconverted pigs. We also investigated the presence of T. gondii DNA using PCR amplification. Results: Only one pig seroconverted. However, bioassay of pig heart tissue further inoculated into mice showed no evidence of T. gondii infection. Consistently, no evidence of T. gondii DNA was revealed in any sample. Conclusions: No evidence of airborne transmission was found in the environmental samples that were examined.
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Affiliation(s)
- Abhishek Wadhawan
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Dolores E Hill
- U.S. Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705, USA
| | - Aline Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Hira Mohyuddin
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Patrick Donnelly
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Jeffrey L Jones
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Teodor T Postolache
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran Microbiome Consortium for Research and Education (MVM-CoRE), Denver, CO 80220, USA; Mental Illness Research, Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 5, VA Capitol Health Care Network, Baltimore, MD 21201, USA,
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14
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Makkar H, Reynolds MA, Wadhawan A, Dagdag A, Merchant AT, Postolache TT. Periodontal, metabolic, and cardiovascular disease: Exploring the role of inflammation and mental health. Pteridines 2018; 29:124-163. [PMID: 30705520 PMCID: PMC6350811 DOI: 10.1515/pteridines-2018-0013] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Previous evidence connects periodontal disease, a modifiable condition affecting a majority of Americans, with metabolic and cardiovascular morbidity and mortality. This review focuses on the likely mediation of these associations by immune activation and their potential interactions with mental illness. Future longitudinal, and ideally interventional studies, should focus on reciprocal interactions and cascading effects, as well as points for effective preventative and therapeutic interventions across diagnostic domains to reduce morbidity, mortality and improve quality of life.
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Affiliation(s)
- Hina Makkar
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Mark A Reynolds
- Department of Advanced Oral Sciences & Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Abhishek Wadhawan
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Aline Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Anwar T Merchant
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
| | - Teodor T Postolache
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran Microbiome Consortium for Research and Education (MVM-CoRE), Denver, CO 80220, USA; Mental Illness Research, Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 5, VA Capitol Health Care Network, Baltimore, MD 21201, USA,
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15
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Amritwar A, Dagdag A, Postolache S, Pavlovitch M, Roomet T, Donnelly P, Mohyuddin I, Snitker S, Postolache TT. 0163 Activity And Light Exposure In The Old Order Amish. Sleep 2018. [DOI: 10.1093/sleep/zsy061.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Amritwar
- Sheppard Pratt Health Center, Ellicott City, MD
| | - A Dagdag
- University of Maryland School of Medicine, Baltimore, MD
| | - S Postolache
- University of Maryland School of Medicine, Baltimore, MD
| | - M Pavlovitch
- University of Maryland School of Medicine, Baltimore, MD
| | - T Roomet
- University of Maryland School of Medicine, Baltimore, MD
| | - P Donnelly
- University of Maryland School of Medicine, Baltimore, MD
| | - I Mohyuddin
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD
| | - S Snitker
- Division of Endocrinology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD
| | - T T Postolache
- Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, Baltimore, MD
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16
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Postolache TT, Corona C, Daue M, Pavlovich MA, Snitker S, Stiller JW, Dagdag A, Nijjar G, Nazem S, Brenner LA, Lowry CA, Hill D. 0424 Association between Toxoplasma Gondii Oocyst IgG And Insomnia In The Old Order Amish. Sleep 2018. [DOI: 10.1093/sleep/zsy061.423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - C Corona
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland SOM, Baltimore, MD
| | - M Daue
- University of Maryland School of Medicine, Baltimore, MD, 21201, USA, Baltimore, MD
| | - M A Pavlovich
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, 21201, USA, Baltimore, MD
| | - S Snitker
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, 21201, USA, Baltimore, MD
| | - J W Stiller
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland SOM, Baltimore, MD
| | - A Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, 21201, USA, Baltimore, MD
| | - G Nijjar
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, 21201, USA, Baltimore, MD
| | - S Nazem
- Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Denver, CO 80220, USA., Auora, CO
| | - L A Brenner
- Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Denver, CO 80220, USA., Denver, CO
| | - C A Lowry
- Department of Integrative Physiology and Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA, Aurora, CO
| | - D Hill
- US Department of Agriculture, Agricultural Research Service, Animal and Natural Resources Institute, Animal Parasitic Diseases Laboratory, Beltsville, MD
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17
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Ahmad Z, Moustafa YW, Stiller JW, Pavlovich MA, Raheja UK, Gragnoli C, Snitker S, Nazem S, Dagdag A, Fang B, Fuchs D, Lowry CA, Postolache TT. Sleep onset insomnia, daytime sleepiness and sleep duration in relationship to Toxoplasma gondii IgG seropositivity and serointensity. Pteridines 2017; 28:195-204. [PMID: 29657364 PMCID: PMC5894504 DOI: 10.1515/pterid-2017-0010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Toxoplasma gondii (T. gondii) infects central nervous tissue and is kept in relative dormancy by a healthy immune system. Sleep disturbances have been found to precipitate mental illness, suicidal behavior and car accidents, which have been previously linked to T. gondii as well. We speculated that if sleep disruption, particularly insomnia, would mediate, at least partly, the link between T. gondii infection and related behavioral dysregulation, then we would be able to identify significant associations between sleep disruption and T. gondii. The mechanisms for such an association may involve dopamine (DA) production by T. gondii, or collateral effects of immune activation necessary to keep T. gondii in check. Sleep questionnaires from 2031 Old Order Amish were analyzed in relationship to T. gondii-IgG antibodies measured by enzyme-linked immunosorbent assay (ELISA). Toxoplasma gondii seropositivity and serointensity were not associated with any of the sleep latency variables or Epworth Sleepiness Scale (ESS). A secondary analysis identified, after adjustment for age group, a statistical trend toward shorter sleep duration in seropositive men (p = 0.07). In conclusion, it is unlikely that sleep disruption mediates links between T. gondii and mental illness or behavioral dysregulation. Trending gender differences in associations between T. gondii and shorter sleep need further investigation.
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Affiliation(s)
- Zaki Ahmad
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Yara W. Moustafa
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; and Saint Elizabeths’ Hospital, Psychiatry Residency Training Program, Washington, DC, USA
| | - John W. Stiller
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; Saint Elizabeths’ Hospital, Department of Neurology, Washington, DC, USA; and Maryland State Athletic Commission, Baltimore, MD, USA
| | - Mary A. Pavlovich
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA; and Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Uttam K. Raheja
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; and Child and Adolescent Psychiatry Residency Program, Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - Claudia Gragnoli
- Division of Endocrinology, Translational Medicine, Department of Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA; Department of Public Health Sciences, Penn State College of Medicine, Hershey, PA, USA; and Molecular Biology Laboratory, Bios Biotech Multi Diagnostic Health Center, Rome, Italy
| | - Soren Snitker
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Sarra Nazem
- Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Denver, CO, USA; Department of Psychiatry, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; and Department of Physical Medicine and Rehabilitation, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Aline Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Beverly Fang
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Dietmar Fuchs
- Division of Biological Chemistry, Biocenter, Innsbruck Medical University, Innsbruck, Austria
| | - Christopher A. Lowry
- Department of Integrative Physiology and Center for Neuroscience, University of Colorado Boulder, Boulder, CO, USA; Department of Physical Medicine and Rehabilitation and Center for Neuroscience, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; and Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Denver, CO, USA
| | - Teodor T. Postolache
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Denver, CO, USA; and Mental Illness Research, Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 5, VA Capitol Health Care Network, Baltimore, MD, USA
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18
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Wadhawan A, Dagdag A, Duffy A, Daue ML, Ryan KA, Brenner LA, Stiller JW, Pollin TI, Groer MW, Huang X, Lowry CA, Mitchell BD, Postolache TT. Positive association between Toxoplasma gondii IgG serointensity and current dysphoria/hopelessness scores in the Old Order Amish: a preliminary study. Pteridines 2017; 28:185-194. [PMID: 29657363 DOI: 10.1515/pterid-2017-0019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Toxoplasma gondii (T. gondii) IgG seropositivity and serointensity have been previously associated with suicidal self-directed violence (SSDV). Although associations with unipolar depression have also been investigated, the results have been inconsistent, possibly as a consequence of high heterogeneity. We have now studied this association in a more homogeneous population, [that is (i.e.) Old Order Amish (OOA)] with previously reported high T. gondii seroprevalence. In 306 OOA with a mean age of 46.1 ± 16.7 years, including 191 (62.4%) women in the Amish Wellness Study, we obtained both T. gondii IgG titers (by enzyme-linked immunosorbent assay [ELISA]), and depression screening questionnaires (Patient Health Questionnaire [PHQ-9] [n = 280] and PHQ-2 [n = 26]). Associations between T. gondii IgG and dysphoria/hopelessness and anhedonia scores on depression screening questionnaires were analyzed using multivariable linear methods with adjustment for age and sex. Serointensity was associated with both current dysphoria/hopelessness (p = 0.045) and current combined anhedonia and dysphoria/hopelessness (p = 0.043), while associations with simple anhedonia and past/lifelong (rather than current) phenotypes were not significant. These results indicate the need for larger longitudinal studies to corroborate the association between dysphoria/hopelessness and T. gondii IgG-titers. Current hopelessness is a known risk factor for SSDV which responds particularly well to cognitive behavioral therapy, and may be a focused treatment target for T. gondii-positive individuals at high-risk for SSDV.
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Affiliation(s)
- Abhishek Wadhawan
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; and Saint Elizabeths' Hospital, Psychiatry Residency Training Program, Washington, DC, USA
| | - Aline Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Allyson Duffy
- College of Nursing, University of South Florida College of Nursing, Tampa, FL, USA
| | - Melanie L Daue
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA; Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD, USA; and Geriatrics Research and Education Clinical Center, Veterans Affairs Medical Center, Baltimore, MD, USA
| | - Kathy A Ryan
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA; and Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Lisa A Brenner
- Departments of Psychiatry, Physical Medicine and Rehabilitation, and Neurology, University of Colorado, Anschutz School of Medicine, Denver, CO, USA; and Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran. Microbiome: Consortium for Research and Education (MVM-CoRE), Denver, CO, USA
| | - John W Stiller
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; Saint Elizabeths' Hospital, Department of Neurology, Washington, DC, USA; and Maryland State Athletic Commission, Baltimore, MD, USA
| | - Toni I Pollin
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA; and Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Maureen W Groer
- College of Nursing, University of South Florida College of Nursing, Tampa, FL, USA
| | - Xuemei Huang
- Department of Neurology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Christopher A Lowry
- Department of Integrative Physiology and Center for Neuroscience, University of Colorado Boulder, Boulder, CO, USA; Department of Physical Medicine and Rehabilitation and Center for Neuroscience, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; and Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran. Microbiome: Consortium for Research and Education (MVM-CoRE), Denver, CO, USA
| | - Braxton D Mitchell
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA; Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD, USA; and Geriatrics Research and Education Clinical Center, Veterans Affairs Medical Center, Baltimore, MD, USA
| | - Teodor T Postolache
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran. Microbiome: Consortium for Research and Education (MVM-CoRE), Denver, CO, USA; and Mental Illness Research, Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 5, VA Capitol Health Care Network, Baltimore, MD, USA
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