Àá½Ã¸¸ ±â´Ù·Á ÁÖ¼¼¿ä. ·ÎµùÁßÀÔ´Ï´Ù.

°¡·É¿¡ µû¸¥ ÈòÁã ÇϾǰúµÎ ¼¶À¯ÃþÀÇ ¹Ì¼¼±¸Á¶ ¹× ±³¿ø¿ø¼¶À¯ÀÇ º¯È­

ULTRASTRUCTUAL ANALYSIS OF THE FIBROUS LAYER OF CONDYLE IN THE RAT TEMPOROMANDIBULAR JOINT WITH AGEING

¼Ò¼Ó »ó¼¼Á¤º¸
º¯±âÁ¤/Ki Jeong Byeon

Abstract

¿ä¾à
ÈòÁã¿¡ À־ °¡·É¿¡ µû¶ó ÇϾǰúµÎ¿¡ °¡ÇØÁö´Â ±â°èÀû ºÎÇÏÀÇ º¯È­¿¡ µû¶ó ÇϾǰúµÎ ¼¶
À¯ÃþÀÇ ¹Ì¼¼±¸Á¶Àû º¯È­¸¦ °üÂû, ºÐ¼®ÇÑ °á°ú¸¦ ¿ä¾àÇÏ¸é ´ÙÀ½°ú °°´Ù.
ÇϾǰúµÎ ¼¶À¯ÃþÀÇ ¼¼Æ÷´Â »ýÈÄ Ãʱ⿡´Â ¹ÌºÐÈ­°£¿±¼¼Æ÷ ¹× ¼¶À¯¸ð¼¼Æ÷·Î ±¸¼ºµÇ¾î ÀÖ¾ú
´Ù.
°¡·É¿¡ µû¶ó »ýÈÄ 14ÀÏ, 27Àϱº µî¿¡¼­´Â »ýÈÄ Ãʱ⿡ ºñÇØ ±³¿ø¿ø¼¶À¯¸¦ È°¹ßÇÏ°Ô ÇÕ¼º
ºÐºñÇÏ´Â °ÍÀ¸·Î »ý°¢µÇ´Â ¼¶À¯¸ð¼¼Æ÷°¡ ¹ß´ÞÇÏ¿´´Âµ¥ ÀÌµé ¼¼Æ÷´Â °ú¸³Çü ¹°Áú·Î ä¿öÁ®
ÀÖ´Â ³»°­ÀÌ ´ë´ÜÈ÷ È®ÀåµÇ¾î ÀÖÀ¸¸ç, ¸®º¸¼ØÀÌ Ä¡¹ÐÇÏ°Ô Á¸ÀçÇÏ´Â °ú¸³¼¼Æ÷Áú¼¼¸Á°ú °ñÁö
ÀåÄ¡°¡ ¹ß´ÞµÇ¾î ÀÖ¾ú´Ù. ¶ÇÇÑ ÀÌµé ¼¼Æ÷³»¿¡´Â ¼¼Æ÷¼Ò±â°ü »çÀÌ¿¡ ¼¼»ç°¡ Á¡Â÷·Î ¹ß´ÞÇÏ´Â
¾ç»óÀ» º¸¿´´Ù.
»ýÈÄ 55Àϱº ÀÌÈÄ¿¡¼­´Â, °¡´Ã°í ±ä ¼¼Æ÷µ¹±â¸¦ °¡Áö¸ç, °ú¸³¼¼Æ÷Áú¼¼¸Á ¹× °ñÁöÀåÄ¡°¡ ¹ß
´ÞµÇ¾î ÀÖ¾î ±³¿ø¼¶À¯ÀÇ ÇÕ¼ºÀÌ ¿Õ¼ºÇÑ °ÍÀ¸·Î ÃßÃøµÇ´Â ¼¼Æ÷, ¾à°£ µî±Û°Å³ª ´Ù°¢ÇüÀÇ ¸ð
¾çÀ» º¸À̸ç, ¼¼Æ÷Áú³»¿¡ »ç¸³Ã¼, ¿ëÇؼÒü ¹× °ñÁöÀåÄ¡°¡ ¹ß´ÞÇÏ¿´À¸¸ç, ¼Õ»óµÈ ±³¿ø¼¶À¯
ȤÀº º¯¼ºµÈ ¼¼Æ÷ÀÇ Èí¼ö¿¡ °ü¿©ÇÏ´Â °ÍÀ¸·Î ÃßÃøµÇ´Â ¼¼Æ÷, ¼¼Æ÷ÁúÀÇ »ó´çºÎºÐÀÌ ¼¼»ç·Î
ä¿öÁ® ÀÖÀ¸¸ç, »ç¸³Ã¼, ¿ëÇؼÒü ¹× °ú¸³¼¼Æ÷Áú³»¼¼¸Á°ú °°Àº ¼¼Æ÷Áú³» ¼Ò±â°üÀº Àß ¹ß´ÞµÇ
¾î ÀÖÁö ¾Ê¾Æ °¡ÇØÁø ±â°èÀû Àڱؿ¡ ´ëÇØ ÀûÀÀÇÏ¿´°Å³ª È°µ¿ÀÌ Á¤ÁöµÈ ¼¼Æ÷ µî 3Á¾·ùÀÇ ¼¼
Æ÷°¡ °üÂûµÇ¾ú´Ù.
¼¼Æ÷°£ÁúÀÇ ±³¿ø¿ø¼¶À¯´Â »ýÈÄ ÃʱâºÎÅÍ °¡·É¿¡ µû¶ó Á¡Â÷·Î Ä¡¹ÐÇÏ°Ô ¹è¿­µÇ´Â ¾ç»óÀ» º¸
¿´´Ù.
±³¿ø¿ø¼¶À¯ÀÇ Á÷°æÀº »ýÈÄ 1ÀÏ, 7Àϱº¿¡¼­´Â 38.48¡¾3.81nm 38.06¡¾3.86nm·Î¼­ À¯»çÇÏ¿´À¸
³ª »ýÈÄ 14Àϱº¿¡¼­´Â 50.21¡¾3.93nm·Î °¡Àå ±½Àº ¾ç»óÀ» º¸¿´À¸¸ç(p<0.05), ±×ÈÄ »ýÈÄ 27
ÀÏ, 55Àϱº¿¡¼­´Â °¢±â 40.05¡¾2.52nm, 43.63¡¾1.20nm·Î¼­ Á¡Â÷·Î °¡´Ã¾îÁ® »ýÈÄ 1³â±º¿¡¼­
´Â 37.38¡¾2.17nm·Î¼­ °¡Àå °¡´Ã¾î Á³´Ù(p<0.05). ±× ºÐÆ÷¿¡ À־´Â »ýÈÄ Ãʱ⿡´Â Á÷°æÀÌ
30-60ÀÎ ±³¿ø¿ø¼¶À¯°¡ ´ë´Ù¼ö¸¦ Â÷ÁöÇÏ´Â unimordalÇÑ ºÐÆ÷¸¦ º¸¿´À¸³ª, »ýÈÄ 27ÀÏ ÀÌÈÄ¿¡
´Â Á÷°æÀÌ ÀÛÀº ±³¿ø¿ø¼¶À¯°¡ Á¡Â÷·Î Áõ°¡ÇÏ´Â ¾ç»óÀ» º¸¿´´Ù.
ÀÌ»óÀÇ °¡·É¿¡ µû¸¥ °á°ú·Î ¹Ì·ç¾îº¸¾Æ ÇϾǰúµÎ ¼¶À¯ÃþÀÇ ¹Ì¼¼±¸Á¶, ±³¿ø¿ø¼¶À¯ÀÇ ¹è¿­
¹× Á÷°æÀÇ ºÐÆ÷¿¡¼­ÀÇ º¯È­´Â °¡ÇØÁö´Â ±â°èÀû ºÎÇÏ¿¡ ´ëÇÑ ÀûÀÀÇÑ °á°ú¶ó°í »ý°¢µÈ´Ù.
#ÃÊ·Ï#
The fibrous layer of mandibular condyle of the neonatal, 1-, 7-, 14-, 27-, 55-days and
1 year old rats were examined in the electron microscope with particular attention to the
ultrastructure and diameter of collagen fibrils.
In th 1-day rats, most of the cells of the fibrous layer were undifferentiated
mesenchymal cells and fibroblasts with rough a little developed rough endoplasmic
reticulum(REP) and golgi apparatus(GA). In 7-, 17 and 27-days old rats, most of the
fibroblast showed well developed GA and REP with widely distended cisternae
containing granular materials. In many of these cells contained intracytoplasmic filaments
among the cytoplamic organelle. In 55-day and 1-year old rats, three types of cells
were observed, ie, cells containing well developed cytoplasimic organelle presumed to be
involved in the collagen fibril synthesis, cells showing well developed lysosomes, golgi
apparatus, mitochondria and short cytoplasmic process presumed to be involved in the
active resorption of the injured collagen fibrils or cellular debris, cells containing many
intracytoplasmic fillaments and a little organelle presumed to be cells of inactive state.
The average diameters of collagen fibrils were similar in 1- and 7-day old rats as
38.48¡¾2.81nm, 38.06¡¾3.86nm. That was thickest in 14 days old rats as 50.21¡¾3.93nm
among experimental groups. They were gradually thinner in 27-, 55-day rats as 40.05¡¾
2.52nm, 43.63¡¾1.20nm and thinnest in 1-year old rats as 37.38¡¾2.17nm.
The distribution pattern of diameters of collagen fibrils were unimordal with peak of
30-60nm in rats from 1-day to 17-day old. With aging from 27-day to 1 year old rats,
collagen fibril diameters showed wide distribution pattern and percentage of thin collagen
fibrils increased.
These results may show the functional adaptation of fibrous layer of mandibular
condyle to the increased mechanical forces with aging.

Å°¿öµå

Ultrastructure; Collagen fibril(s); Aging;

¿ø¹® ¹× ¸µÅ©¾Æ¿ô Á¤º¸

 

µîÀçÀú³Î Á¤º¸

KCI
KoreaMed