Journal of the Korean Association of Oral and Maxillofacial Surgeons

The Korean Association of Oral and Maxillofacial Surgeons (대한구강악안면외과학회)
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IMMUNOHISTOCHEMICAL DETECTION OF GROWTH FACTORS AND EXTRACELLULAR MATRIX PROTEINS IN THE DEGENERATING TISSUES OF PRE-AND POSTNATAL HUMAN CLEFT LIP AND PALATE

태생 및 생후 구순.구개열에 나타나는 조직변성에 대한 성장인자와 세포외 기질 단백의 면역조직화학적 연구

  • Min, Bong-Gi (Department of Oral and Maxillofacial Surgery, College of Dentistry, Kangnung National University) ;
  • Lee, Suk-Keun (Department of Oral Pathology, College of Dentistry, Kangnung National University) ;
  • Park, Young-Wook (Department of Oral and Maxillofacial Surgery, College of Dentistry, Kangnung National University)
  • 민봉기 (강릉대학교 치과대학 구강악안면외과학교실) ;
  • 이석근 (강릉대학교 치과대학 구강병리학교실) ;
  • 박영욱 (강릉대학교 치과대학 구강악안면외과학교실)
  • Published : 2002.12.31
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Abstract

In order to elucidate the pathogenesis of cleft lip and palate, first of all, it is necessary to understand the developmental mechanisms of growth factors and extracellular matrix proteins in the tissues of cleft lip and palate. We have performed immunohistochemical studies on human cleft lip and palate tissues to elucidate the pathogenetic implications of cleft lip and palate. 16 specimens from postnatal human cleft lip and palate subjects and 17 specimens from autopsy of prenatal human cleft lip and palate were fixed in 10% buffered formalin, embedded in paraffin. The sections were routinely stained by hematoxylin and eosin, also stained by PAS, and followed by immunohistochemical stainings using the antiseras of growth factors and extracellular matrix proteins such as PCNA, S-100, c-erb-B2, MMP-3, MMP-10, HSP-70, transglutaninase-C, E-cadherin, VEGF, vWF. Both the prenatal and postnatal specimens of cleft lip and palate showed dysplastic proliferation of the basal cell layer, increased infiltration of melanocytes into mucosal epithelium, sebaceous gland hyperplasia ingrowing into the muscular tissue of lip and palate, and fatty infiltration into the submucosal deep connective tissue. The strong reactions of MMP-3 and HSP-70 were detected in the tissues of cleft lip and palate, especially increased in degenerating muscle bundles, while the immunostainings of PCNA and c-erb-B2 were weakly positive in the tissues of cleft lip and palate. These data suggest that the retrogressive tissue degeneration around the cleft areas persistently exist during the prenatal and postnatal period after cleft formation, and the sebaceous gland hyperplasia and fatty infiltration with the intense expression of MMP-3 and HSP-70 is closely related to the muscular degeneration around the cleft area.

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References

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