1. Acupuncture suppresses kainic acid-induced neuronal death and inflammatory events in mouse hippocampus
- Author
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Chang Shik Yin, Jang-Hyun Kim, Seungtae Kim, Hi-Joon Park, Ah-Reum Doo, Song-Yi Kim, Seung-Nam Kim, Yoon Young Kim, and Hyejung Lee
- Subjects
Male ,Kainic acid ,medicine.medical_specialty ,Physiology ,Acupuncture Therapy ,Hippocampus ,Apoptosis ,Hippocampal formation ,Proinflammatory cytokine ,Mice ,chemistry.chemical_compound ,Epilepsy ,Seizures ,Internal medicine ,Excitatory Amino Acid Agonists ,Acupuncture ,medicine ,Animals ,Neurons ,Kainic Acid ,business.industry ,Neurodegeneration ,medicine.disease ,Mice, Inbred C57BL ,Disease Models, Animal ,Endocrinology ,chemistry ,Anesthesia ,Cytokines ,Encephalitis ,Neuron death ,business ,Neuroglia - Abstract
The administration of kainic acid (KA) causes seizures and produces neurodegeneration in hippocampal CA3 pyramidal cells. The present study investigated a possible role of acupuncture in reducing hippocampal cell death and inflammatory events, using a mouse model of kainic acid-induced epilepsy. Male C57BL/6 mice received acupuncture treatments at acupoint HT8 or in the tail area bilaterally once a day for 2 days and again immediately after an intraperitoneal injection of KA (30 mg/kg). HT8 is located on the palmar surface of the forelimbs, between the fourth and fifth metacarpal bones. Twenty-four hours after the KA injection, neuronal cell survival, the activations of microglia and astrocytes, and mRNA expression of two proinflammatory cytokines, interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α), were measured in the hippocampus. Acupuncture stimulation at HT8, but not in the tail area, significantly reduced the KA-induced seizure, neuron death, microglial and astrocyte activations, and IL-1β mRNA expression in the hippocampus. The acupuncture stimulation also decreased the mRNA expression of TNF-α, but it was not significant. These results indicate that acupuncture at HT8 can inhibit hippocampal cell death and suppress KA-induced inflammatory events, suggesting a possible role for acupuncture in the treatment of epilepsy.
- Published
- 2012