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歯列矯正中の歯痛を有するウサギに対するTEASの予防および治療効果
[Preventive and therapeutic effects of TEAS on rabbits with orthodontic toothache].
PMID: 29231305
抄録
目的:
歯列矯正による歯痛の予防と治療に対する経皮的電気的ツボ刺激(TEAS)の作用機序を検討する。
OBJECTIVE: To explore the action mechanisms of transcutaneous electrical acupoint stimulation (TEAS) on prevention and treatment of orthodontic toothache.
方法:
24羽の雄性ニュージーランドウサギを無作為にブランク群、歯列矯正群、TEAS群に分け、各群8羽ずつとした。歯列矯正群およびTEAS群では、ブラケットを接着し、NI-TIスクリューを結紮ワイヤーで固定し、ウサギの歯列矯正模型を作製した。模型作製後、TEAS群にはポイント(両側上顎第一大臼歯に対応する皮膚面)および拡張波によるHegu(LI 4)を1回20分、1日2回、計2日間連続治療(4回)を行った。ウサギの一般行動、総食餌摂取量、疼痛閾値を観察し、血清中のプロスタグランジンE(PGE)、顆粒球マクロファージコロニー刺激因子(GM-CSF)、脳脊髄液中のエンドルフィン(β-EP)液およびコレシストキニン-8(CCK-8)を検出した。
METHODS: Twenty-four male New Zealand rabbits were randomly divided into a blank group, an orthodontic group and a TEAS group, 8 rabbits in each one. The orthodontic model of rabbit was made in orthodontic group and TEAS group by bonding brackets and fixing NI-TI screw with ligature wire. After model establishment, the TEAS group was treated with TEAS at points (skin surface corresponding points to the bilateral upper 1st molars) and "Hegu" (LI 4) with dilatational wave, 20 min per treatment, twice a day, totally 2-day consecutive treatment (4 treatments) was provided. The rabbit general behavior, total food intake and threshold of pain were observed; the contents of serum prostaglandin E (PGE), granulocyte macrophage colony stimulating factor (GM-CSF) as well as endorphin (β-EP) fluid and cholecystokinin-8 (CCK-8) in cerebrospinal fluid (CSF) were detected.
結果:
歯列矯正群と比較して、TEAS群ではウサギの一般行動、総食餌摂取量、疼痛閾値が有意に改善した(<0.05, <0.01)。血清PGEは有意に減少し(<0.05)、GM-CSFは統計的有意差はなく減少傾向を示した(>0.05)。CSF中のβ-EPは増加し(<0.05)、CSF中のCCK-8は統計的有意差なく減少傾向を示した(>0.05)。
RESULTS: Compared with the orthodontic group, the rabbit general behavior, total food intake and threshold of pain in the TEAS group were significantly improved (<0.05, <0.01). The serum PGE were significantly reduced (<0.05), while GM-CSF presented reducing trend without statistical significance (>0.05). The β-EP in the CSF were increased (<0.05), while CCK-8 in CSF presented reducing trend without statistical significance (>0.05).
結論:
TEASの歯痛予防・治療効果は、末梢神経系における藻類発生物質PGEを選択的に減少させ、中枢神経系における髄液中のβ-EPを増加させ、抗オピオイド性疼痛維持物質CCK-8のレベルを維持することにより達成された。
CONCLUSIONS: The preventive and therapeutic effects of TEAS on rabbits with orthodontic toothache are achieved by reducing algogenic substance PGE in peripheral nervous system selectively, increasing β-EP in CSF in central nervous system and keeping the level of anti-opioid pain maintaining substance CCK-8.Both the central and peripheral nervous systems participate in the analgesic effect of TEAS.