Research Topics
| B J PrendergastSummaryAffiliation: The Ohio State University Country: USA Publications
| Collaborators
|
Detail Information
Publications
Periodic arousal from hibernation is necessary for initiation of immune responses in ground squirrelsBrian J Prendergast
Department of Psychology, The Ohio State University, Columbus, Ohio 43210, USA
Am J Physiol Regul Integr Comp Physiol 282:R1054-62. 2002..Periodic arousals may activate a dormant immune system, which can then combat pathogens that may have been introduced immediately before or during hibernation...- Photoperiod modulates the inhibitory effect of in vitro melatonin on lymphocyte proliferation in female Siberian hamstersB J Prendergast
Department of Psychology and Neuroscience, The Ohio State University, Columbus 43210, USA
J Biol Rhythms 16:224-33. 2001..These data support the hypothesis that melatonin acts directly on lymphocytes from long-day hamsters to suppress blastogenesis... - Photoperiodic polyphenisms in rodents: neuroendocrine mechanisms, costs, and functionsB J Prendergast
Department of Psychology, Ohio State University, Columbus, Ohio 43210, USA
Q Rev Biol 76:293-325. 2001..Several nonexclusive hypotheses are proposed to account for the maintenance of nonresponsive individuals in wild rodent populations... 
Spontaneous "regression" of enhanced immune function in a photoperiodic rodent Peromyscus maniculatusB J Prendergast
Department of Psychology, The Ohio State University, Townshend Hall, Columbus, OH 43210, USA
Proc Biol Sci 268:2221-8. 2001..The results suggest that formal similarities and, possibly, common substrates exist among the photoperiodic timekeeping mechanisms that regulate seasonal transitions in reproductive and immune function...- Photoperiodic adjustments in immune function protect Siberian hamsters from lethal endotoxemiaBrian J Prendergast
Department of Psychology and Neuroscience, The Ohio State University, Columbus, OH 43210, USA
J Biol Rhythms 18:51-62. 2003..Adaptation to short days induces changes in immune parameters that affect survival in the face of immune challenges... - Photorefractoriness of immune function in male Siberian hamsters (Phodopus sungorus)B J Prendergast
Departments of Psychology and Neuroscience, Ohio State University, Townshend Hall, Columbus, OH 43210, USA
J Neuroendocrinol 14:318-29. 2002..Together, these data indicate that, similar to the reproductive system, the immune system of male Siberian hamsters exhibits refractoriness to short days... - Hypothalamic gene expression in reproductively photoresponsive and photorefractory Siberian hamstersBrian J Prendergast
Departments of Psychology and Neuroscience, and Biochemistry and Medical Biochemistry and Neurobiotechnology Center, Ohio State University, Columbus, OH 43210, USA
Proc Natl Acad Sci U S A 99:16291-6. 2002.... - Photoperiod alters the time course of brain cyclooxygenase-2 expression in Siberian hamstersS D Bilbo
Department of Psychology, The Ohio State University, Columbus, OH 43210, USA
J Neuroendocrinol 15:958-64. 2003..We conclude that short photoperiods significantly altered the time course of central COX-2 protein expression in hamsters in a manner consistent with reduced fever duration... - Triggering of neuroendocrine refractoriness to short-day patterns of melatonin in Siberian hamstersB J Prendergast
Department of Psychology, University of California at Berkeley, Berkeley, CA, USA
J Neuroendocrinol 12:303-10. 2000..In nature all hamsters are exposed to short days for at least 25 weeks, ensuring refractoriness in most individuals... - Short day lengths enhance skin immune responses in gonadectomised Siberian hamstersB J Prendergast
Department of Psychology, University of Chicago, Chicago, IL 60637, USA
J Neuroendocrinol 17:18-21. 2005..The data suggest that contemporary gonadal hormone secretion is neither necessary, nor sufficient to mediate the effects of short photoperiods on skin immune function... - Establishment and persistence of photoperiodic memory in hamstersB J Prendergast
Department of Psychology, University of California, Berkeley, CA 94720, USA
Proc Natl Acad Sci U S A 97:5586-91. 2000..These findings indicate that hamsters are influenced only by relatively recent day lengths and melatonin signals and ignore earlier ones that might cause them to misinterpret the salience of current day lengths... - Frequency coding of melatonin signals sufficient to induce testicular growth in photoregressed Siberian hamstersB J Prendergast
Department of Psychology, University of California at Berkeley, 94720 1650, USA
J Neuroendocrinol 11:237-41. 1999..The neuroendocrine system responsive to melatonin does not bridge intervals of more than a day in any of several combinations and apparently is frequency-coded for maximal responsiveness to daily signals... - Reproductive responses to photoperiod persist in olfactory bulbectomized Siberian hamsters (Phodopus sungorus)Brian J Prendergast
Department of Psychology, The University of Chicago, Chicago, IL 60637, USA
Behav Brain Res 198:159-64. 2009..In marked contrast to Syrian hamsters, the olfactory bulbs of Siberian hamsters play essentially no role in the modulation of tonic gonadotrophin production or gonadotrophin responses to photoperiod... - Effects of photoperiod history on immune responses to intermediate day lengths in Siberian hamsters (Phodopus sungorus)Brian J Prendergast
Departments of Psychology and Neuroscience, The Ohio State University, Columbus, OH 43210, USA
J Neuroimmunol 149:31-9. 2004..The data suggest that photoperiodic mechanisms that enhance and suppress several aspects of immunity in young-adult hamsters are not responsive to prenatally communicated photoperiod history information... - Gonadal hormone-dependent and -independent regulation of immune function by photoperiod in Siberian hamstersBrian J Prendergast
Department of Psychology, University of Chicago, Chicago, IL 60637, USA
Am J Physiol Regul Integr Comp Physiol 294:R384-92. 2008..Thus, photoperiod affects the immune system and neural-immune interactions underlying sickness behaviors via gonadal hormone-dependent and -independent mechanisms... 
Photoperiod history differentially impacts reproduction and immune function in adult Siberian hamstersBrian J Prendergast
Department of Psychology, University of Chicago, Illinois, USA
J Biol Rhythms 24:509-22. 2009..Prior photoperiod exposure has an enduring impact on the ability of the immune system to respond to subsequent changes in day length...- Behavioral tolerance to endotoxin is enhanced by adaptation to winter photoperiodsBrian J Prendergast
Department of Psychology, University of Chicago, Chicago, IL 60637, USA
Psychoneuroendocrinology 33:540-5. 2008..During winter, enhancements in behavioral endotoxin tolerance may conserve energy and facilitate survival in the face of energetically challenging conditions... - Photoperiodic regulation of circulating leukocytes in juvenile Siberian hamsters: mediation by melatonin and testosteroneBrian J Prendergast
Department of Psychology, The Ohio State University, Columbus, OH 43210, USA
J Biol Rhythms 18:473-80. 2003..These data indicate that juvenile Siberian hamsters are immunologically responsive to photoperiod and that the leukocyte responses to day length are the result of melatonin-mediated effects of photoperiod on testicular hormone secretion... - Peripubertal immune challenges attenuate reproductive development in male Siberian hamsters (Phodopus sungorus)Brian J Prendergast
Departments of Psychology and Neuroscience, The Ohio State University, Columbus, Ohio 43210, USA
Biol Reprod 70:813-20. 2004..The data also underscore the importance of seasonally dependent life history factors in assessing physiological tradeoffs... - Photoperiod and stress affect wound healing in Siberian hamstersSteven G Kinsey
Departments of Psychology and Neuroscience, The Ohio State University, Columbus, OH 43210, USA
Physiol Behav 78:205-11. 2003..In nature, enhanced wound healing coincident with the breeding season and territorial defense may be adaptive... - Winter day lengths enhance T lymphocyte phenotypes, inhibit cytokine responses, and attenuate behavioral symptoms of infection in laboratory ratsBrian J Prendergast
Department of Psychology, Institute for Mind and Biology, University of Chicago, 940 E 57th Street, Chicago, IL 60637, USA
Brain Behav Immun 21:1096-108. 2007..Seasonal changes in the host immune system, endocrine system, and behavior may contribute to the seasonal variability in disease outcomes, even in reproductively non-photoperiodic mammals... - Internalization of seasonal timeBrian J Prendergast
Department of Psychology, Institute for Mind and Biology, University of Chicago, 940 E 57th St, Chicago, IL 60637, USA
Horm Behav 48:503-11. 2005.... - Affective responses to changes in day length in Siberian hamsters (Phodopus sungorus)Brian J Prendergast
Department of Psychology, University of Chicago, Chicago, IL 60637, USA
Psychoneuroendocrinology 30:438-52. 2005..Together the results indicate that adaptation to short photoperiods is associated with increased expression of anxiety- and depressive-like behaviors relative to those observed under LD photoperiod conditions... - Genetic analyses of a seasonal interval timerBrian J Prendergast
Department of Psychology, University of Chicago, Chicago, IL 60637, USA
J Biol Rhythms 19:298-311. 2004..Balancing selection in environments where the onset of spring conditions varies from year to year could maintain genetic variance in interval timers and yield interval timers tuned to the local environment... - Photoperiod controls the induction, retention, and retrieval of antigen-specific immunological memoryBrian J Prendergast
Department of Psychology, The Ohio State University, Columbus, OH 43210, USA
Am J Physiol Regul Integr Comp Physiol 286:R54-60. 2004..The data suggest that short photoperiods have enduring effects on immune responsiveness and on the establishment and retention of immunological memory... - Affective and adrenocorticotrophic responses to photoperiod in Wistar ratsB J Prendergast
Department of Psychology, University of Chicago, Chicago, IL 60637, USA
J Neuroendocrinol 20:261-7. 2008..Standard laboratory husbandry practices (exposure to a 12 : 12 h light/dark cycle) may inadvertently deliver a chronic background depressive and anxiogenic stimulus... - Peripheral tumors induce depressive-like behaviors and cytokine production and alter hypothalamic-pituitary-adrenal axis regulationLeah M Pyter
Department of Psychology, Institute for Mind and Biology, University of Chicago, 940 East 57th Street, Chicago, IL 60637, USA
Proc Natl Acad Sci U S A 106:9069-74. 2009..The results establish that tumors alone are sufficient to trigger changes in emotional behaviors. Dampened glucocorticoid responses to stressors may exacerbate the deleterious effects of tumor-induced cytokines on affective states... - Mammary tumors induce select cognitive impairmentsLeah M Pyter
Department of Psychology, Institute for Mind and Biology, University of Chicago, Chicago, IL 60637, USA
Brain Behav Immun 24:903-7. 2010..Together the results indicate that peripheral tumors alone are sufficient to induce increases in hippocampal cytokine expression and select deficits in hippocampal-dependent memory tasks... - Temporal integration of melatonin infusion duration: signal averaging versus frequency dependenceJolanta M Piatkowska
Department of Psychology, University of California, San Diego, CA, USA
J Pineal Res 35:91-7. 2003..In the majority (six of seven) of infusion regimes, reproductive responses to chimeric patterns of long and short melatonin signals were compatible with a simple signal-averaging mechanism... - Form over function?Randy J Nelson
Department of Psychology, The Ohio State University, Columbus 43210, USA
J Biol Rhythms 17:406-9; discussion 410-2. 2002 - Social facilitation of wound healingCourtney E Detillion
Department of Psychology, The Ohio State University, 01 Townsend Hall, 1885 Neil Avenue, Columbus, OH 43210 USA
Psychoneuroendocrinology 29:1004-11. 2004..The data imply that social isolation impairs wound healing, whereas OT treatment may ameliorate some effects of social isolation on health... - Melatonin acts at the suprachiasmatic nucleus to attenuate behavioral symptoms of infectionDavid A Freeman
Department of Biology, University of Memphis, Memphis, TN, USA
Behav Neurosci 121:689-97. 2007.... - Photoperiodic regulation of behavioral responsiveness to proinflammatory cytokinesJarvi C Wen
Department of Psychology and Institute for Mind and Biology, University of Chicago, Chicago, IL 60637, United States
Physiol Behav 90:717-25. 2007.... - Photoperiodic regulation of behavioral responses to bacterial and viral mimetics: a test of the winter immunoenhancement hypothesisScott R Baillie
Department of Psychology and Institute for Mind and Biology, University of Chicago, Chicago, IL 60637, USA
J Biol Rhythms 23:81-90. 2008..Energetically costly behavioral responses to several distinct classes of infectious organisms are attenuated in anticipation of winter. The data are not consistent with a pathogen-specific seasonal modulation of innate immune responses... - Pineal-dependent and -independent effects of photoperiod on immune function in Siberian hamsters (Phodopus sungorus)Jarvi C Wen
Department of Psychology and Institute for Mind and Biology, University of Chicago, Chicago, IL 60637, USA
Horm Behav 51:31-9. 2007..The pineal gland is required for photoperiodic regulation of circulating leukocytes and neural-immune interactions that mediate select aspects of sickness behaviors... - Exogenous T3 mimics long day lengths in Siberian hamstersDavid A Freeman
Department of Biology, University of Memphis, Memphis, Tennessee 38152 3540, USA
Am J Physiol Regul Integr Comp Physiol 292:R2368-72. 2007..These results suggest that T3 mimics long day exposure in Siberian hamsters and may serve as an intermediate step between the Mel rhythm and the reproductive response...