DOI QR코드

DOI QR Code

Change in Pulpal Blood Flow of Heat-induced Neurogenic Inflammation in Feline Dental Plup

고양이 치수에서 열 자극으로 유도된 신경병증 염증에서 치수 혈류량 변화

  • Received : 2013.10.17
  • Accepted : 2013.12.05
  • Published : 2013.12.31

Abstract

This study examined the involvement of histamine in heat-induced changes in pulpal blood flow(PBF) to determine the mechanism of neurogenic inflammation in feline dental pulp. The experiments were carried out in 10 felines anesthetized with sodium pentobartial and histamine injected into the dental pulp through the external carotid artery. The change in the pulpal PBF was measured using a laser Doppler flowmeter(Periflux 4001, Stockholm, Sweden). The probe of laser Doppler flowmeter was placed on the buccal surface of the ipsilateral canine teeth. Heat was applied to the tooth using a heat stimulator controlled script file with an input/output device. The application of heat ($40-65^{\circ}C$) induced a significant increase in PBF. The application of histamine($5{\mu}g/kg/1ml$) followed by heat($45^{\circ}C$) resulted in an increase in PBF. Therefore, the results of the present study showed that heat and histamine are capable of vasoconstriction caused by neurogenic inflammation in feline dental pulp. In addition, neurogenic inflammation plays an active role in modulating the microcirculation of the dental pulp.

본 연구는 열 자극으로 유도된 신경성 염증 상태에서 혈류량의 변화와 histamine의 치수혈류 조절에 관해 유기적 관계를 연구함으로써 치수혈류 조절기전을 밝히고자 하였다. 연구방법은 열 마리의 고양이를 전신마취 하에 사용되었으며, 치수혈류의 변화는 레이저 도플러 측정계(Periflux 4001, Stockholm, Sweden)을 사용하여 측정 하였다. 레이저 도플러 측정하는 프로브는 하악 견치의 치면에 위치하였다. 열 자극은 입력/출력 장치와 열 자극 제어 스크립트 파일을 사용하여 치아에 적용하였다. 열($40-65^{\circ}C$)에 따라 치수 혈류량이 증가를 확인하였으며, $55^{\circ}C$에서 가장 큰 변화가 나타났다. 열 자극의 변화가 없는 $45^{\circ}C$에서 Histamine($5{\mu}g/kg/1ml$)를 치아와 가까운 설 동맥으로 주입 시 열 자극만 처치한 그룹보다 현저한 증가가 나타났다. 본 연구는 열적 자극에 의해 발생된 신경성 염증상태에서 치수혈류 변화와 이에 히스타민의 기능적으로 관여함을 나타내주며, 치아 염증 상태의 기전을 밝힐 수 있는 가능성을 보여준다.

Keywords

References

  1. K. W. Bueltmann, U. L. Karlsson, J. Edie, Quantitative ultrastructure of intradental nerve fibres in marmosets, Arch Oral Biol, Vol.17, No.4, pp.645-660, 1972 DOI: http://dx.doi.org/10.1016/0003-9969(72)90191-4
  2. J. P. Naftel, J. M. Bernanke, X. B. Qian, Quantitative study of the apical nerve fibers of adult and juvenile rat molars, Anat Rec Vol.238, No14, pp.507-16, 1994 DOI: http://dx.doi.org/10.1002/ar.1092380410
  3. T. H. Kim, Y. C. Bae, E. S. Yang, Distribution of Peripherin Immunoreactive Axons in Rat Molar Pulp. Korean J Phys Anthropol Vol.26, No.1, pp.33-40, 2013 DOI: http://dx.doi.org/10.11637/kjpa.2013.26.1.33
  4. K. Markowitz, S. K. Kim, Hypersensitive teeth. Experimental studies of dentinal desensitizing agents. Dent Clin North Am Vol.34, No.3, pp.491-501, 1990
  5. M. V. Narhi, Dentin sensitivity: a review, J Biol Buccale Vol.13, No.2, pp.75-96, 1985
  6. M. Kress, P. W. Reeh, Chemical excitation and sensitization in nociceptors. In: Belmonte C, Cervero F, Neurobiology of nociceptors. 1st ed. Oxford, Oxford University Press, pp.258-297, 1996
  7. S. K. Kim, Testing of Neuropeptide Y Involvement in Blood Flow Regulation in the Feline Dental Pulp using D-myo-inositol-1,2,6-trispho-sp hate. J Korean Acad Conserv Dent, Vol.21, No1, pp.366-374, 1996
  8. W. S. Chu, S. H. Park, D. K. Ahn, S. K. Kim: Effect of local anesthesia on pulpal blood flow in mechanically stimulated teeth, J Korean Acad Conserv Dent, Vol.31, No.4, pp.257-262, 2006 DOI: http://dx.doi.org/10.5395/JKACD.2006.31.4.257
  9. P. Chaudhary, M. E. Martenson, T. K. Baumann, Vanilloid receptor expression and capsaicin exitation of rat dental primary afferent neurons, J Dent Res, Vol.80, No.1, pp.1518-1523, 2001 DOI: http://dx.doi.org/10.1177/00220345010800060801
  10. D. H. Wang, The vanilloid receptor and hypertension, Acta Pharmacol Sin, Vol.26, No3, pp.286-294, 2005 DOI: http://dx.doi.org/10.1111/j.1745-7254.2005.00057.x
  11. J. C. Schwartz, H. Pollard, T. T. Quach, Histamine as a neurotransmitter in mammalian brain:neuro chemical evidence, J Neurochem, Vol.35, No.1, pp.26-33, 1980 DOI: http://dx.doi.org/10.1111/j.1471-4159.1980.tb12485.x
  12. H. S. Anstendig, J. H. Kronman, A histologic study of pulpal reaction to orthodontic tooth movement in dogs, Angle Orthod, Vol.42, No.1, pp.50-55, 1972
  13. P. A. Hamersky, A. D. Weimer, J. F. Weimer, The effect of orthodontic force application on the pulpal tissue respiration rate in the human premolar, Am J Orthod, Vol.77, No.4, pp.368-378, 1980 DOI: http://dx.doi.org/10.1016/0002-9416(80)90103-7
  14. M. Ikawa, H. Komatsu, K. Ikawa, H. Mayanagi, H. Shimauchi, Age-related changes in the human pulpal blood flow measured by laser Doppler flowmetry. Dent Traumatol Vol.19, No1, pp.36-40, 2003 DOI: http://dx.doi.org/10.1034/j.1600-9657.2003.00120.x
  15. S. S. Park, Involvement of TRPV1 in the Heat-induced Vasodilation in Feline Dental Pulp, Graduate school kyungpook national university, 2008
  16. M. J. Caterina, M. A. Schumacher, M. Tominaga, T. A. Rosen, Levine JD, Julius D. The capsaicin receptor:a heat-activated ion channel in the pain pathway, Nature Vol.398, pp.816-824, 1997
  17. M. J. Caterina, D. Julius, The vanilloid receptor:a molecular gateway to the pain pathway, Annu Rev Neurosci Vol.24, pp.487-517, 2001 DOI: http://dx.doi.org/10.1146/annurev.neuro.24.1.487
  18. S. Tanaka, K. W. Barron, M. J. Chandler, B. Linderoth, R. D. Foreman, Low intensity spinal cord stimulation may induce cutaneous vasodilation via CGRP release, Brain Res. Vol.896, No1, pp.183-187, 2001 DOI: http://dx.doi.org/10.1016/S0006-8993(01)02144-8
  19. J. H. Woo, Involvement of TRPV1 in the Capsaicin-induced Vasodilation in Feline Dental Pulp, Graduate school kyungpook national university. 2006.
  20. M. L. Ahlquist, O. G. Franzen, Inflammation and dental pain in man, Endod Dent Traumatol, Vol.10, No.5, pp.201-209, 1994 DOI: http://dx.doi.org/10.1111/j.1600-9657.1994.tb00070.x
  21. P. Kemppainen, H. Leppanen, E. Jyvasjarvi, A. Pertovaara, Blood flow increase in the orofacial area of humans induced by painful stimulation, Brain Res Bull, Vol.33, No.6, pp.655-662, 1994 DOI: http://dx.doi.org/10.1016/0361-9230(94)90229-1
  22. G. Yosipovitch, K. Fast, J. D. Bernhard, Noxious heat and scratching decrease histamine-induced itch and skin blood flow. J Invest Dermatol, Vol.125, pp.1268-1272, 2005 DOI: http://dx.doi.org/10.1111/j.0022-202X.2005.23942.x