All Stories

  1. Infant pain vs. pain with parental suppression: Immediate and enduring impact on brain, pain and affect

    Article • PLoS ONE, November 2023, PLOS

    Gordon A. Barr

  2. A new formulation of dezocine, Cyc-dezocine, reduces oxycodone self-administration in female and male rats

    Article • Neuroscience Letters, October 2023, Elsevier

    Gordon A. Barr

  3. A Brief Overview of the Neuropharmacology of Opioid Addiction

    Article • Translational Perioperative and Pain Medicine, December 2022, Transpopmed

    Gordon A. Barr

  4. Endogenous Opioid Dynorphin Is a Potential Link between Traumatic Brain Injury, Chronic Pain, and Substance Use Disorder

    Article • Journal of Neurotrauma, January 2022, Mary Ann Liebert Inc

    Gordon A. Barr

  5. Functional near‐infrared spectroscopy to assess pain in neonatal circumcisions

    Article • Pediatric Anesthesia, November 2021, Wiley

    Gordon A. Barr

  6. The Long-Term Effects of Neonatal Inflammatory Pain on Cognitive Function and Stress Hormones Depend on the Heterogeneity of the Adolescent Period of Development in Male and Female Rats

    Article • Frontiers in Behavioral Neuroscience, July 2021, Frontiers

    Gordon A. Barr

  7. Maternal continuous oral oxycodone self-administration alters pup affective/social communication but not spatial learning or sensory-motor function

    Article • Drug and Alcohol Dependence, April 2021, Elsevier

    Gordon A. Barr

  8. Local injury and systemic infection in infants alter later nociception and pain affect during early life and adulthood

    Article • Brain Behavior & Immunity - Health, December 2020, Elsevier

    Gordon A. Barr

  9. Female and male rats readily consume and prefer oxycodone to water in a chronic, continuous access, two-bottle oral voluntary paradigm

    Article • Neuropharmacology, May 2020, Elsevier

    Gordon A. Barr

  10. Effects of plant-derived analgesic compounds sinomenine and salvinorin A in infant rats

    Article • Journal of Integrative Medicine, March 2020, Elsevier

    Gordon A. Barr

  11. Trigeminal Pain Responses in Obese ob/ob Mice Are Modality-Specific

    Article • Neuroscience, September 2019, Elsevier

    Gordon A. Barr

  12. Female rats consume and prefer oxycodone more than males in a chronic two-bottle oral voluntary choice paradigm

    Article • July 2019, Cold Spring Harbor Laboratory Press

    Gordon A. Barr

  13. Differences Between the Prenatal Effects of Fluoxetine or Buspirone Alone or in Combination on Pain and Affective Behaviors in Prenatally Stressed Male and Female Rats

    Article • Frontiers in Behavioral Neuroscience, June 2019, Frontiers

    Gordon A. Barr

  14. Mapping of pain circuitry in early post-natal development using manganese-enhanced MRI in rats

    Article • Neuroscience, June 2017, Elsevier

    Gordon A. Barr

  15. Long-Term Effects of Chronic Buspirone during Adolescence Reduce the Adverse Influences of Neonatal Inflammatory Pain and Stress on Adaptive Behavior in Adult Male Rats

    Article • Frontiers in Behavioral Neuroscience, January 2017, Frontiers

    Gordon A. Barr

  16. Developmental Changes in Pain and Spinal Immune Gene Expression after Radicular Trauma in the Rat

    Article • Frontiers in Neurology, December 2016, Frontiers

    Gordon A. Barr

  17. Repeated recall and PKMζ maintain fear memories in juvenile rats

    Article • Learning & Memory, November 2016, Cold Spring Harbor Laboratory Press

    Gordon A. Barr

  18. Effects of Prenatal Stress on Serotoninergic Neurons in the Dorsal Raphe Nucleus and on Pain Behavior during the Neonatal Period of Development

    Article • Neuroscience and Behavioral Physiology, October 2016, Springer Science + Business Media

    Gordon A. Barr

  19. Enduring good memories of infant trauma: Rescue of adult neurobehavioral deficits via amygdala serotonin and corticosterone interaction

    Article • Proceedings of the National Academy of Sciences, January 2015, Proceedings of the National Academy of Sciences

    Gordon A. Barr

  20. Effects of COX inhibition and LPS on formalin induced pain in the infant rat

    Article • Developmental Neurobiology, September 2014, Wiley

    Gordon A. Barr

  21. Interactions between glia, the immune system and pain processes during early development

    Article • Developmental Psychobiology, June 2014, Wiley

    Gordon A. Barr

  22. Medial Prefrontal Cortex Processes Threatening Stimuli in Juvenile Rats

    Article • Neuropsychopharmacology, February 2014, Nature

    Gordon A. Barr

  23. Unpredictable neonatal stress enhances adult anxiety and alters amygdala gene expression related to serotonin and GABA

    Article • Neuroscience, January 2014, Elsevier

    Gordon A. Barr

  24. Opiates During Development

    Article • January 2013, Springer Science + Business Media

    Gordon A. Barr

  25. Analgesia induced by localized injection of opiate peptides into the brain of infant rats

    Article • European Journal of Pain, December 2012, Wiley

    Gordon A. Barr

  26. Peripheral nerve graft with immunosuppression modifies gene expression in axotomized CNS neurons

    Article • The Journal of Comparative Neurology, September 2011, Wiley

    Gordon A. Barr

  27. The Role of the Medial Prefrontal Cortex in Innate Fear Regulation in Infants, Juveniles, and Adolescents

    Article • Journal of Neuroscience, March 2011, Society for Neuroscience

    Gordon A. Barr

  28. Interactions of estradiol and NSAIDS on carrageenan-induced hyperalgesia

    Article • Brain Research, March 2011, Elsevier

    Gordon A. Barr

  29. Estradiol-induced antinociceptive responses on formalin-induced nociception are independent of COX and HPA activation

    Article • Synapse, February 2011, Wiley

    Gordon A. Barr

  30. Formalin-Induced c-fos Expression in the Brain of Infant Rats

    Article • Journal of Pain, February 2011, Elsevier

    Gordon A. Barr

  31. Changing Mechanisms of Opiate Tolerance and Withdrawal during Early Development: Animal Models of the Human Experience

    Article • ILAR Journal, January 2011, Oxford University Press (OUP)

    Gordon A. Barr

  32. Regional Fos expression induced by morphine withdrawal in the 7-day-old rat

    Article • Developmental Psychobiology, November 2009, Wiley

    Gordon A. Barr

  33. Transitions in infant learning are modulated by dopamine in the amygdala

    Article • Nature Neuroscience, September 2009, Nature

    Gordon A. Barr

  34. Sex differences in formalin-induced pain in prenatally stressed infant rats

    Article • European Journal of Pain, November 2007, Wiley

    Gordon A. Barr

  35. Spinal cord ionotropic glutamate receptors function in formalin-induced nociception in preweaning rats

    Article • Psychopharmacology, March 2007, Springer Science + Business Media

    Gordon A. Barr

  36. Sex-dependent differences in parameters of long-term pain caused by inflammatory focus in prenatally stressed newborn rats

    Article • Journal of Evolutionary Biochemistry and Physiology, February 2007, Pleiades Publishing Ltd

    Gordon A. Barr

  37. Abstracts: International Society for Developmental Psychobiology, 39th Annual Meeting, October 11–14, 2006 200 Atlanta, GA

    Article • Developmental Psychobiology, October 2006, Wiley

    Gordon A. Barr

  38. Increased formalin-induced pain and expression of fos neurons in the lumbar spinal cord of prenatally stressed infant rats

    Article • Neuroscience Letters, August 2006, Elsevier

    Gordon A. Barr

  39. Estradiol and progesterone differentially regulate formalin-induced nociception in ovariectomized female rats

    Article • Hormones and Behavior, April 2006, Elsevier

    Gordon A. Barr

  40. Microarray analysis of gene expression following the formalin test in the infant rat☆

    Article • Pain, September 2005, Wolters Kluwer Health

    Gordon A. Barr

  41. Issues for Consideration in the Analysis of Microarray Data in Behavioural Studies

    Article • Addiction Biology, March 2005, Taylor & Francis

    Gordon A. Barr

  42. Age-specific threats induce CRF expression in the paraventricular nucleus of the hypothalamus and hippocampus of young rats

    Article • Hormones and Behavior, February 2005, Elsevier

    Gordon A. Barr

  43. The role of AMPA and metabotropic glutamate receptors on morphine withdrawal in infant rats

    Article • International Journal of Developmental Neuroscience, August 2004, Elsevier

    Gordon A. Barr

  44. Developmental changes in the behavioral and autonomic effects of kappa opioid receptor stimulation of the midbrain periaqueductal gray

    Article • Developmental Psychobiology, January 2004, Wiley

    Gordon A. Barr

  45. Mother Lowers Glucocorticoid Levels of Preweaning Rats After Acute Threat

    Article • Annals of the New York Academy of Sciences, December 2003, Wiley

    Gordon A. Barr

  46. Ontogeny of NMDA receptor-mediated morphine tolerance in the postnatal rat

    Article • Pain, August 2003, Wolters Kluwer Health

    Gordon A. Barr

  47. Functional development of neurokinin peptides substance P and neurokinin A in nociception

    Article • Neuroreport, August 2003, Wolters Kluwer Health

    Gordon A. Barr

  48. Erratum to “stress-induced preproenkephalin mRNA expression in the amygdala changes during early ontogeny in the rat”

    Article • Neuroscience, June 2003, Elsevier

    Gordon A. Barr

  49. Rat pups reduce ultrasonic vocalization after exposure to an adult male rat

    Article • Developmental Psychobiology, May 2003, Wiley

    Gordon A. Barr

  50. Analgesia induced by local plantar injections of opiates in the formalin test in infant rats

    Article • Developmental Psychobiology, January 2003, Wiley

    Gordon A. Barr

  51. Stress-induced preproenkephalin mRNA expression in the amygdala changes during early ontogeny in the rat

    Article • Neuroscience, September 2002, Elsevier

    Gordon A. Barr

  52. Attenuation of Acute Morphine Withdrawal in the Neonatal Rat by the Competitive NMDA Receptor Antagonist LY235959

    Article • Neuropsychopharmacology, March 2002, Nature

    Gordon A. Barr

  53. Developmental changes in c-fos expression to an age-specific social stressor in infant rats

    Article • Behavioural Brain Research, November 2001, Elsevier

    Gordon A. Barr

  54. Opiate withdrawal during development: are NMDA receptors indispensable?

    Article • Trends in Pharmacological Sciences, August 2001, Elsevier

    Gordon A. Barr

  55. Analgesic efficacy of ketorolac and morphine in neonatal rats

    Article • Pharmacology Biochemistry and Behavior, April 2001, Elsevier

    Gordon A. Barr

  56. Inhibition of morphine withdrawal by the NMDA receptor antagonist MK-801 in rat is age-dependent

    Article • Synapse, January 2001, Wiley

    Gordon A. Barr

  57. Developmental changes in responsivity to threat are stimulus-specific in rats

    Article • Developmental Psychobiology, January 2001, Wiley

    Gordon A. Barr

  58. The role of opioid receptors in morphine withdrawal in the infant rat

    Article • Developmental Brain Research, November 2000, Elsevier

    Gordon A. Barr

  59. Maturation of NK1 receptor involvement in the nociceptive response to formalin

    Article • Synapse, June 2000, Wiley

    Gordon A. Barr

  60. Opiate Withdrawal in the Fetal Rat

    Article • Pharmacology Biochemistry and Behavior, June 2000, Elsevier

    Gordon A. Barr

  61. Naltrexone-precipitated morphine withdrawal in infant rat is attenuated by acute administration of NOS inhibitors but not NMDA receptor antagonists

    Article • Psychopharmacology, June 2000, Springer Science + Business Media

    Gordon A. Barr

  62. The effect of periaqueductal gray lesions on responses to age-specific threats in infant rats

    Article • Developmental Brain Research, April 2000, Elsevier

    Gordon A. Barr

  63. Long-term intravenous perinatal cocaine exposure on the mortality of rat offspring

    Article • Neurotoxicology and Teratology, March 2000, Elsevier

    Gordon A. Barr

  64. Injections of an opioid antagonist into the locus coeruleus and periaqueductal gray but not the amygdala precipitates morphine withdrawal in the 7-day-old rat

    Article • Synapse, January 2000, Wiley

    Gordon A. Barr

  65. μ Opioid receptors in the ventrolateral periaqueductal gray mediate stress-induced analgesia but not immobility in rat pups.

    Article • Behavioral Neuroscience, January 2000, American Psychological Association (APA)

    Gordon A. Barr

  66. μ Opioid receptors in the ventrolateral periaqueductal gray mediate stress-induced analgesia but not immobility in rat pups.

    Article • Behavioral Neuroscience, January 2000, American Psychological Association (APA)

    Gordon A. Barr

  67. Antinociceptive effects of locally administered morphine in infant rats

    Article • Pain, May 1999, Wolters Kluwer Health

    Gordon A. Barr

  68. Maturation of the Biphasic Behavioral and Heart Rate Response in the Formalin Test

    Article • Pharmacology Biochemistry and Behavior, June 1998, Elsevier

    Gordon A. Barr

  69. Neonatal Withdrawal Following Pre- and Postnatal Exposure to Methadone in the Rat

    Article • Pharmacology Biochemistry and Behavior, May 1998, Elsevier

    Gordon A. Barr

  70. Behavioral and heart rate effects of infusing kainic acid into the dorsal midbrain during early development in the rat

    Article • Developmental Brain Research, April 1998, Elsevier

    Gordon A. Barr

  71. Ontogeny of Defensive Behavior and Analgesia in Rat Pups Exposed to an Adult Male Rat

    Article • Physiology & Behavior, January 1998, Elsevier

    Gordon A. Barr

  72. Formalin-induced c-fos expression in the spinal cord of fetal rats

    Article • Pain, December 1997, Wolters Kluwer Health

    Gordon A. Barr

  73. Precipitated Morphine Withdrawal Induces a Conditioned Aversion in the Preweaning Rat

    Article • Pharmacology Biochemistry and Behavior, August 1997, Elsevier

    Gordon A. Barr

  74. Ontogeny of fos protein-like immunoreactivity in the suprachiasmatic nucleus

    Article • Synapse, September 1995, Wiley

    Gordon A. Barr

  75. The induction of Fos-like immunoreactivity by noxious thermal, mechanical and chemical stimuli in the lumbar spinal cord of infant rats

    Article • Pain, March 1995, Wolters Kluwer Health

    Gordon A. Barr

  76. Mu and delta opiates induce analgesia when injected into the PAG or NRM in preweanling rats

    Article • Regulatory Peptides, November 1994, Elsevier

    Gordon A. Barr

  77. Opiate withdrawal in the infant

    Article • Neurotoxicology and Teratology, March 1994, Elsevier

    Gordon A. Barr

  78. Aversive properties of theκ opioid agonist U50,488 in the week-old rat pup

    Article • Psychopharmacology, January 1994, Springer Science + Business Media

    Gordon A. Barr

  79. Effect of paraventricular injection of neuropeptide Y on milk and water intake of preweanling rats

    Article • Neuropeptides, March 1993, Elsevier

    Gordon A. Barr

  80. Behavioral effects of chronic cocaine treatment in the week-old rat pup

    Article • European Journal of Pharmacology, March 1993, Elsevier

    Gordon A. Barr

  81. Peripheral and central administration of cocaine produce conditioned odor preferences in the infant rat

    Article • Brain Research, December 1992, Elsevier

    Gordon A. Barr

  82. The pharmaco-ontogeny of the perifornical lateral hypothalamic β2-adrenergic and dopaminergic receptor systems mediating epinephrine- and dopamine-induced suppression of feeding in the rat

    Article • Developmental Brain Research, November 1992, Elsevier

    Gordon A. Barr

  83. The pharmaco-ontogeny of the paraventricular α2-noradrenergic receptor system mediating norepinephrine-induced feeding in the rat

    Article • Developmental Brain Research, July 1992, Elsevier

    Gordon A. Barr

  84. The appearance of Fos protein-like immunoreactivity in the hypothalamus of developing rats in response to cold ambient temperatures

    Article • Neuroscience, July 1992, Elsevier

    Gordon A. Barr

  85. Analgesic effects of intraventricular and intrathecal injection of morphine and ketocyclazocine in the infant rat

    Article • Brain Research, July 1992, Elsevier

    Gordon A. Barr

  86. Analgesia from the periaqueductal gray in the developing rat: focal injections of morphine or glutamate and effects of intrathecal injection of methysergide or phentolamine

    Article • Brain Research, July 1992, Elsevier

    Gordon A. Barr

  87. Tolerance and withdrawal to chronic morphine treatment in the week-old rat pup

    Article • European Journal of Pharmacology, April 1992, Elsevier

    Gordon A. Barr

  88. Conditioned place preference from ventral tegmental injection of morphine in neonatal rats

    Article • Developmental Brain Research, March 1992, Elsevier

    Gordon A. Barr

  89. The development of cholecystokinin in the interpeduncular nucleus of rats

    Article • Developmental Brain Research, February 1992, Elsevier

    Gordon A. Barr

  90. Differential effects of specific opioid receptor agonists on rat pup isolation calls

    Article • Developmental Brain Research, September 1991, Elsevier

    Gordon A. Barr

  91. The ontogeny of opioid receptors mediating opiate-induced feeding in rats

    Article • Neuropharmacology, May 1990, Elsevier

    Gordon A. Barr

  92. The effects of amphetamine and chlorpromazine on independent ingestion of milk in preweanling rats

    Article • Pharmacology Biochemistry and Behavior, July 1989, Elsevier

    Gordon A. Barr

  93. Morphine-induced downregulation of μ-opioid receptors in neonatal rat brain

    Article • Developmental Brain Research, June 1988, Elsevier

    Gordon A. Barr

  94. Effects of neonatal spinal cord serotonin depletion on opiate-induced analgesia in tests of thermal and mechanical pain

    Article • Developmental Brain Research, June 1988, Elsevier

    Gordon A. Barr

  95. Analgesic effects of intrathecally applied noradrenergic compounds in the developing rat: differences due to thermal vs mechanical nociception

    Article • Developmental Brain Research, June 1988, Elsevier

    Gordon A. Barr

  96. Serotonin and anxiety revisited

    Article • Biological Psychiatry, January 1988, Elsevier

    Gordon A. Barr

  97. Normal development and effects of early deafferentation on choline acetyltransferase, substance P and serotonin-like immunoreactivity in the interpeduncular nucleus

    Article • Brain Research, August 1987, Elsevier

    Gordon A. Barr

  98. Acetylcholine in the interpeduncular nucleus of the rat: normal distribution and effects of deafferentation

    Article • Brain Research, August 1987, Elsevier

    Gordon A. Barr

  99. Morphine- and ketocyclazocine-induced analgesia in the developing rat: differences due to type of noxious stimulus and body topography

    Article • Developmental Brain Research, April 1987, Elsevier

    Gordon A. Barr

  100. κ Opioid receptor-mediated analgesia in the developing rat

    Article • Developmental Brain Research, October 1986, Elsevier

    Gordon A. Barr

  101. Pharmaco-ontogeny of reward: Enhancement of self-stimulation by d-amphetamine and cocaine in 3- and 10-day-old rats

    Article • Developmental Brain Research, January 1986, Elsevier

    Gordon A. Barr, Professor Trevor Lithgow

  102. Multiple [3H]imipramine binding sites in brains of male and female Fawn-Hooded and Long-Evans rats

    Article • European Journal of Pharmacology, June 1985, Elsevier

    Gordon A. Barr

  103. Place conditioning with morphine and phencyclidine: Dose dependent effects

    Article • Life Sciences, January 1985, Elsevier

    Gordon A. Barr

  104. Self-stimulation in 7- and 10-day-old rats.

    Article • Behavioral Neuroscience, January 1984, American Psychological Association (APA)

    Gordon A. Barr

  105. Self-stimulation in 7- and 10-day-old rats.

    Article • Behavioral Neuroscience, January 1984, American Psychological Association (APA)

    Gordon A. Barr

  106. Dopamine-stimulated adenylate cyclase in hypothalamus: Influence of estrous cycle in female and castration in male rats

    Article • Brain Research, October 1983, Elsevier

    Gordon A. Barr

  107. Classical conditioning, decay and extinction of cocaine-induced hyperactivity and stereotypy

    Article • Life Sciences, October 1983, Elsevier

    Gordon A. Barr

  108. Effects of chronic antenatal and postnatal administration of narcotics on naloxone-induced anorexia in preweanling rats

    Article • Neuropharmacology, March 1983, Elsevier

    Gordon A. Barr

  109. Analgesic responses following adrenal demedullation and peripheral catecholamine depletion

    Article • Physiology & Behavior, December 1982, Elsevier

    Gordon A. Barr

  110. The effects of opiate antagonists on milk intake of preweanling rats

    Article • Neuropharmacology, August 1982, Elsevier

    Gordon A. Barr

  111. Effects of different housing conditions on intraspecies fighting between male Long-Evans hooded rats

    Article • Physiology & Behavior, December 1981, Elsevier

    Gordon A. Barr

  112. Inescapable shock alters mescaline's disruption of active avoidance acquisition

    Article • Psychopharmacology, September 1981, Springer Science + Business Media

    Gordon A. Barr

  113. A method for stereotaxic implantation in neonatal rats

    Article • Developmental Brain Research, September 1981, Elsevier

    Professor Trevor Lithgow, Gordon A. Barr

  114. L-tryptophan's effects on mouse killing, feeding, drinking, locomotion, and brain serotonin

    Article • Pharmacology Biochemistry and Behavior, August 1981, Elsevier

    Gordon A. Barr

  115. A comparison of the effects of acute and subacute administration of β-phenylethylamine and d-amphetamine on mouse killing behavior of rats

    Article • Pharmacology Biochemistry and Behavior, October 1979, Elsevier

    Gordon A. Barr

  116. Manipulations of dietary tryptophan: Effects on mouse killing and brain serotonin in the rat

    Article • Brain Research, June 1979, Elsevier

    Gordon A. Barr

  117. Differences in the level of dopamine in the hypothalamus of aggressive and non-aggressive rats

    Article • Brain Research, April 1979, Elsevier

    Gordon A. Barr

  118. Effects of para-chlorophenylalanine and 5-hydroxytryptophan on mouse killing behavior in killer rats

    Article • Pharmacology Biochemistry and Behavior, July 1978, Elsevier

    Gordon A. Barr

  119. Inhibition of rat predatory aggression by acute and chronic D- and L-amphetamine

    Article • Brain Research, April 1977, Elsevier

    Gordon A. Barr

  120. Neuropharmacological regulation of mouse killing by rats

    Article • Behavioral Biology, June 1976, Elsevier

    Gordon A. Barr

  121. Effects of imipramine, d-amphetamine, and tripelennamine on mouse and frog killing by the rat

    Article • Physiology & Behavior, March 1976, Elsevier

    Gordon A. Barr

  122. Male-female differences and the influence of neonatal and adult testosterone on intraspecies aggression in rats.

    Article • Journal of Comparative and Physiological Psychology, January 1976, American Psychological Association (APA)

    Gordon A. Barr

  123. The relationship between mouse killing and intraspecific fighting in the albino rat

    Article • Behavioral Biology, June 1975, Elsevier

    Gordon A. Barr

  124. Opiates During Development

    Article • Springer Science + Business Media

    Gordon A. Barr