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Neuronal Hyperexcitability Mediates Below-Level Central Neuropathic Pain after Spinal Cord Injury in Rats

Park ES, Jeon Y, Cho DC, Youn DH, Gwak YS

  • KMID: 2312071
  • Lab Anim Res.
  • 2010 Sep;26(3):225-232.
Spinal cord injury often leads to central neuropathic pain syndromes, such as allodynic and hyperalgesic behaviors. Electrophysiologically, spinal dorsal horn neurons show enhanced activity to non-noxious and noxious stimuli as...
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Effects of iontophoretically applied substance P, calcitonin gene-related peptide on excitability of dorsal horn neurones in rats

Leem JW, Gwak YS, Lee EH, Chung SS, Kim YS, Nam TS

Spontaneous pain, allodynia and hyperalgesia are well known phenomena following peripheral nerve or tissue injury, and it is speculated that secondary hyperalgesia and allodynia, are generally thought...
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Comparison of Mechanical Allodynia and Recovery of Locomotion and Bladder Function by Different Parameters of Low Thoracic Spinal Contusion Injury in Rats

Carter MW, Johnson KM, Lee JY, Hulsebosch CE, Gwak YS

BACKGROUND: The present study was designed to examine the functional recovery following spinal cord injury (SCI) by adjusting the parameters of impact force and dwell-time using the Infinite Horizon (IH)...
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Sensitization of Cutaneous Nociceptors in Neuropathic Rats

Shim B, Gwak YS, Yoon DM, Leem JW, Nam TS, Paik KS

  • KMID: 1946654
  • J Korean Pain Soc.
  • 2002 Jun;15(1):32-42.
BACKGROUND: Peripheral nerve injury leads to neuropathic pain. Although it has been accepted that both peripheral and central processes may play a role in the pathophysiology of these sensory...
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Effects of NO Synthase Inhibitor on Responsiveness of Dorsal Horn Neurons in Neuropathic Pain Animal Model

Leem JW, Gwak YS, Chung SS, Lee KR, Yoon DM, Nam TS

  • KMID: 2335877
  • J Korean Pain Soc.
  • 2000 Jun;13(1):19-30.
BACKGROUND: Partial nerve injury to a peripheral nerve may induce the development of neuropathic pain which is characterized by symptams such as spontaneous burning pain, allodynia and hyperalgesia. Though underlying mechanism has...
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Sympathetic Dependency of Cold-evoked Pain Behavior Seen in Rats with Peripheral Neuropathy

Choi BO, Choi Y, Gwak YS, Nam TS, Paik KS, Leem JW

  • KMID: 2335902
  • J Korean Pain Soc.
  • 2000 Nov;13(2):156-163.
BACKGROUND: Peripheral nerve injury sometimes leads to chronic neuropathic pain such as causalgia. A subset of patients with causalgia have a sympathetically maintained pain which is often evoked by cooling...
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Effects of electrical stimulation of brainstem nuclei on dorsal horn neuron responses to mechanical stimuli in a rat model of neuropathic pain

Leem JW, Choi Y, Gwak YS, Nam TS, Paik KS

  • KMID: 2285168
  • Korean J Physiol Pharmacol.
  • 1997 Jun;1(3):241-249.
The aim of the present study is to examine the brainstem sites where the electrical stimulation produces a suppression of dorsal horn neuron responses of neuropathic rats. An experimental neuropathy was induced by...
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Loss of the Spinal GABAergic System Is Involved in Chronic Central Pain Following a Spinal Cord Injury; Behavioral and Electrophysiological Evidences

Gwak YS, Shim B, Yoon DM, Nam TS, Paik KS, Leem JW

BACKGROUND: Allodynia, hyperalgesia, and spontaneous pain are symptoms characterized by chronic central pain which was frequently observed following a spinal cord injury (SCI). However, the underlying mechanism has not been...
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Attenuation of Spinal Cord Injury-induced Hyperalgesia by Administration of Antibody to Nerve Growth Factor in the Rat

Gwak YS, Bae JY, Jang JH, Yoon DM, Nam TS, Paik KS, Leem JW

  • KMID: 1947092
  • J Korean Pain Soc.
  • 2003 Jun;16(1):7-13.
BACKGROUND: Spinal cord injury (SCI) often leads to central pain syndrome, including hyperalgesia to mechanical stimulation. Since there is evidence that nerve growth factor (NGF) contributes to pain-related behaviors, we...
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Involvement of Ionotropic, rather than Metabotropic, Glutamate Receptors in Hyperexcitability of Spinal orsal Neurons Induced after Spinal Cord Injury

Gwak YS, Shim B, Yoon DM, Nam TS, Paik KS, Leem JW

  • KMID: 1946656
  • J Korean Pain Soc.
  • 2002 Jun;15(1):48-57.
BACKGROUND: Spinal cord injury (SCI) induces the development of central neuropathic pain which is characterized by symptoms such as allodynia, hyperalgesia, and spontaneous pain. However, the underlying mechanism is not...
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