Michael Bailey, Ph.D. :: Nationwide Children's Hospital, Columbus, Ohio

Michael Bailey, Ph.D.

Michael  Bailey, Ph.D.

Center for Microbial Pathogenesis
Principal Investigator

Contact Information

700 Children's Drive
Columbus, OH 43025 [ map ]
PH: (614) 722-2764


Michael Bailey, PhD, is a Principal Investigator in the Center for Microbial Pathogenesis at The Research Institute at Nationwide Children’s Hospital and is an Associate Professor of Pediatrics at Ohio State University. Dr. Bailey has nearly 20 years of experience studying bidirectional interactions between host physiology and the microbes that naturally reside within the gastrointestinal tract (i.e., the gut microbiota). Dr. Bailey’s studies were among the first to show that stressful situations can lead to changes in the composition of the gut microbiota and his current studies are now focused on the impact that changes to gut microbiota composition have on the functioning of the immune system and on nervous system activity.


  • Male

Languages Spoken:

  • English

Research Interests

Research Center:

Areas of Interest:

  • Understanding the role of commensal microbes in the ability of the physiological stress response to enhance pathogen-induced colonic inflammation and to enhance anxiety and depression
  • Understanding the role that commensal microbes play in the worsening of disease symptoms during stressful periods
  • Multi-directional interactions between host physiology, nervous and immune system activity, and the commensal gut microbiota

Education and Training

Undergraduate School

  • Winona State University
    Date Completed: 01/01/1995

Graduate School

  • Minnesota State University Mankato
    Date Completed: 01/01/1997


  • University of Wisconsin
    Date Completed: 01/01/2002


  • Center for Microbial Pathogenesis


  • Gur TL, Bailey MT. 2016. Effects of Stress on Commensal Microbes and Immune System Activity.  Microbial Endocrinology: Interkingdom Signaling in Infectious Disease and Health. Vol. 14, no. March: 289-300.
  • Bailey MT. 2016. Psychological Stress, Immunity, and the Effects on Indigenous Microflora.  Microbial Endocrinology: Interkingdom Signaling in Infectious Disease and Health. Vol. 11, no. February: 225-246.
  • Xu J, Galley JD, Bailey MT, Thomas-Ahner JM, Clinton SK, Olivo-Marston SE. 2016. The Impact of Dietary Energy Intake Early in Life on the Colonic Microbiota of Adult Mice.  Scientific Reports. Vol. 6, no. January: e19083.
  • Tarr AJ, Galley JD, Fisher SE, Chichlowski M, Berg BM, Bailey MT. 2015. The prebiotics 3’Sialyllactose and 6’Sialyllactose diminish stressor-induced anxiety-like behavior and colonic microbiota alterations: Evidence for effects on the gut-brain axis.  Brain, Behavior, and Immunity. Vol. 50, no. November: 166-177.
  • Mackos AR, Galley JD, Eubank TD, Easterling RS, Parry NM, Fox JG, Lyte M, Bailey MT. 2015. ocial stress-enhanced severity of Citrobacter rodentium-induced colitis is CCL2-dependent and attenuated by probiotic Lactobacillus reuteri.  Mucosal Immunology. Vol. 9, no. September: 515-526.
  • Bailey, MT. 2013. Stress, asthma, and infection: putting the pieces together.  Brain, Behavior, and Immunity. Vol. 29, no. March: 9-10.
  • Hanke, ML, Powell, ND, Stiner-Jones, LM, Bailey, MT, and Sheridan, JF. 2012. Beta adrenergic blockade decreases the immunomodulatory effects of social disruption stress.  Brain, Behavior, and Immunity. Vol. 26, no. 7. (October): 1150-1159. PubMed ID: 22841997
  • Bailey, MT. 2012. The contributing role of the intestinal microbiota in stressor-induced increases in susceptibility to enteric infection and systemic immunomodulation.  Hormones and Behavior. Vol. 62, no. 3. (August): 286-294. PubMed ID: 22366706
  • Allen,Rebecca,G; Lafuse,William,P; Galley,Jeffrey,D; Ali,Mohamed,M; Ahmer,Brian,MM; Bailey,Michael,T. 2012. The intestinal microbiota are necessary for stressor-induced enhancement of splenic macrophage microbicidal activity.  BRAIN BEHAVIOR AND IMMUNITY. Vol. 26, no. 3. (March): 371-382.
  • Mays,Jacqueline,W; Powell,Nicole,D; Hunzeker,John,T; Hanke,Mark,L; Bailey,Michael,T; Sheridan,John,F. 2012. Stress and the anti-influenza immune response: Repeated social defeat augments clonal expansion of CD8(+)T cells during primary influenza A viral infection.  JOURNAL OF NEUROIMMUNOLOGY. Vol. 243, no. 1-2. (February): 34-42.
  • Mays JW, Powell ND, Bailey MT, Sheridan JF. 2012. Environmental Challenges and the Neuroendocrine Mechanisms of Stress-Induced Modulation of Host Resistance to Microbial Infection. In Eco-Immunology. Edited by G. Demas and R.J. Nelson. New York: Oxford University Press.
  • Wohleb ES; Hanke ML; Corona AW; Powell ND; Stiner LM; Bailey MT; Nelson RJ; Godbout JP; Sheridan JF. 2011. beta-adrenergic receptor antagonism prevents anxiety-like behavior and microglial reactivity induced by repeated social defeat.  Journal of Neuroscience. Vol. 31, no. 17. (April): 6277-6288.
  • Bailey MT; Dowd SE; Galley JD; Hufnagle AR; Allen RG; Lyte M. 2011. Exposure to a social stressor alters the structure of the intestinal microbiota: Implications for stressor-induced immunomodulation.  Brain, Behavior, and Immunity. Vol. 25, no. 3. (March): 397-407.
  • Bailey,Michael,T; Dowd,Scot,E; Galley,Jeffrey,D; Hufnagle,Amy,R; Allen,Rebecca,G; Lyte,Mark. 2011. Exposure to a social stressor alters the structure of the intestinal microbiota: Implications for stressor-induced immunomodulation.  BRAIN BEHAVIOR AND IMMUNITY. Vol. 25, no. 3. (March): 397-407.
  • Powell ND, Allen RG, Hufnagle AR, Sheridan JF, and Bailey MT. 2011. Stressor-Induced Alterations of Adaptive Immunity to Vaccination and Viral Pathogens.  Immunology and Allergy Clinics of North America. Vol. 31, no. 1. (February): 69-79.
  • Lin,Y; Roman,K; Foust,K,D; Kaspar,B,K; Bailey,M,T; Stephens,R,L. 2011. Glutamate Transporter GLT-1 Upregulation Attenuates Visceral Nociception and Hyperalgesia via Spinal Mechanisms Not Related to Anti-Inflammatory or Probiotic Effects.  Pain research and treatment. Vol. 2011, no. January: 507029-?.
  • Powell ND; Mays JW; Bailey MT; Hanke ML; Sheridan JF. 2011. Immunogenic dendritic cells primed by social defeat enhance adaptive immunity to influenza A virus.  Brain, Behavior, and Immunity. Vol. 25, no. 1. (January): 46-52.
  • Belevych N; Buchanan K; Chen Q; Bailey M; Quan N. 2010. Location-specific activation of the paraventricular nucleus of the hypothalamus by localized inflammation.  Brain, Behavior, and Immunity. Vol. 24, no. 7. (October): 1137-1147.
  • Bailey MT, Walton JC, Dowd SE, Weil ZM, and Nelson RJ. 2010. Photoperiod modulates gut bacteria composition in male Siberian hamsters (Phodopus sangorus).  Brain, Behavior, and Immunity. Vol. 24, no. 4. (May): 577-584.
  • Bailey MT, Dowd SE, Parry NMA, Galley JD, Schauer DB, and Lyte M. 2010. Stressor exposure disrupts commensal microbial populations in the intestines and leads to increased colonization by Citrobacter rodentium.  Infection and Immunity. Vol. 78, no. 4. (April): 1509-1519.
  • Curry JM, Hanke ML, Piper MG, Bailey MT, Bringardner BD, Sheridan JF, Marsh CB. 2010. Social disruption induces lung inflammation.  Brain, Behavior, and Immunity. Vol. 24, no. 3. (March): 394-402.
  • Dong-Newsom P, Powell ND, Bailey MT, Padgett DA, Sheridan JF. 2010. Repeated social stress enhances the innate immune response to a primary HSV-1 infection in the cornea and trigeminal ganglia of Balb/c mice.  Brain, Behavior, and Immunity. Vol. 24, no. 2. (February): 273-280.
  • Mays JW, Bailey MT, Hunzeker JT, Powell ND, Papenfuss T, Karlsson EA, Padgett DA, Sheridan JF. 2010. Influenza virus-specific immunological memory is enhanced by repeated social defeat.  Journal of Immunology. Vol. 184, no. 4. (February): 2014-2025.
  • Belevych N, Buchanan K, Chen Q, Bailey M, Quan N. 2010. Location-specific activation of the paraventricular nucleus of the hypothalamus by localized inflammation.  Brain, Behavior, and Immunity.
  • Bailey MT. 2010. The effects of psychological stressors on the intestinal microbiota.  Bioscience and Microflora. Vol. 28, no. 4. (January): 119-124.
  • Michael T. Bailey and Ronald Glaser. 2010. Immune measures in behavioral medicine research: procedures and implications. In Handbook of Behavioral Medicine: Methods and Applications. Edited by Andrew Steptoe. New York: Springer Publishers.
  • Michael T. Bailey. 2010. Stress, immunity, and the effects on the indigenous microflora. In Microbial Endocrinology. Edited by Primrose Freestone and Mark Lyte. New York: Springer Publishers.
  • Bailey MT; Kinsey SG; Padgett DA; Sheridan JF; Leblebicioglu B. 2009. Social stress enhances IL-1beta and TNF-alpha production by Porphyromonas gingivalis lipopolysaccharide-stimulated CD11b+ cells.  Physiology & Behavior. Vol. 98, no. 3. (September): 351-358.
  • Bailey MT; Kierstein S; Sharma S; Spaits M; Kinsey SG; Tliba O; Sheridan JF; Panettieri RA; Haczku A. 2009. Social stress enhances allergen-induced airway inflammation in mice and inhibits corticosteroid responsiveness of cytokine production.  Journal Of Immunology (Baltimore, Md.: 1950). Vol. 182, no. 12. (June): 7888-7896.
  • Powell ND; Bailey MT; Mays JW; Stiner-Jones LM; Hanke ML; Padgett DA; Sheridan JF. 2009. Repeated social defeat activates dendritic cells and enhances Toll-like receptor dependent cytokine secretion.  Brain, Behavior, And Immunity. Vol. 23, no. 2. (February): 225-231.
  • Martin LB; Navarra KJ; Bailey MT; Hutch CR; Powell ND; Sheridan JF; Nelson RJ. 2008. Food restriction compromises immune memory in deer mice (Peromyscus maniculatus) by reducing spleen-derived antibody-producing B cell numbers.  Physiological and Biochemical Zoology. Vol. 81, no. 3. (May): 366-372.
  • Henry CJ; Huang Y; Wynne A; Hanke M; Himler J; Bailey MT; Sheridan JF; Godbout JP. 2008. Minocycline attenuates lipopolysaccharide (LPS)-induced neuroinflammation, sickness behavior, and anhedonia.  Journal of Neuroinflammation. Vol. 5, no. May: e15.
  • Kinsey SG; Bailey MT; Sheridan JF; Padgett DA. 2008. The inflammatory response to social defeat is increased in older mice.  Physiology and Behavior. Vol. 93, no. 3. (February): 628-636.
  • Engler H; Bailey MT; Engler A; Stiner-Jones LM; Quan N; Sheridan JF. 2008. Interleukin-1 receptor type 1-deficient mice fail to develop social stress-associated glucocorticoid resistance in the spleen.  Psychoneuroendocrinology. Vol. 33, no. 1. (January): 108-117.
  • Avitsur R; Kinsey SG; Bidor K; Bailey MT; Padgett DA; Sheridan JF. 2007. Subordinate social status modulates the vulnerability to the immunological effects of social stress.  Psychoneuroendocrinology. Vol. 32, no. 8-10. (September): 1097-1105.
  • Bailey MT; Engler H; Powell ND; Padgett DA; Sheridan JF. 2007. Repeated social defeat increases the bactericidal activity of splenic macrophages through a Toll-like receptor-dependent pathway.  American Journal of Physiology. Regulatory, Integrative and Comparative Physiology. Vol. 293, no. 3. (September): R1180-R1190.
  • Kinsey SG; Bailey MT; Sheridan JF; Padgett DA; Avitstur R. 2007. Repeated social defeat causes increased anxiety-like behavior and alters splenocyte function in C57BL/6 and CD-1 mice.  Brain, Behavior, and Immunity. Vol. 21, no. 4. (May): 458-466.
  • Michael T. Bailey, David A. Padgett, and John F. Sheridan. 2007. Stress-induced modulation of innate resistance and adaptive immunity to influenza viral infection. In Psychoneuroimmunology. 4 ed. Edited by Robert Ader. Burlington, MA: Elsevier Academic Press.
  • Mackos, AR, Eubank, TD, Parry, NM, Bailey, MT. Probiotic Lactobacillus reuteri attenuates the stressor-enhanced severity of Citrobacter rodentium infection.  Infection and Immunity.
  • Allen, RG, Lafuse, WP, Powell, ND, Marketon, JM, Stiner-Jones, LM, Sheridan, JF, and Bailey, MT. Stressor-induced increase in the microbicidal activity of splenic macrophages is peroxynitrite dependent.  Infection and Immunity. PubMed ID: 22825446

Awards, Honors and Organizations

  • Robert Ader New Investigator Award, PsychoNeuroImmunology Research Society, 2012
Nationwide Children's Hospital
700 Children's Drive Columbus, Ohio 43205 614.722.2000