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AN ELECTRON MICROSCOPIC STUDY OF INTRAEPITHELIAL NERVES OF ORAL MUCOSA OF RATS DURING AGING

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Abstract

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Çϳª ÀÌ¿¡ ´ëÇÑ ÇüÅÂÇÐÀû Áö°ßÀ» Áß½ÉÀ¸·Î º¼ ¶§ ±×·¯ÇÑ °¨¼Ò°¡ ¼øÀüÇÑ ±â´ÉÀúÇÏÀÇ °á°úÀÎ
Áö ȤÀº Áö°¢½Å°æÀÇ ÇغÎÇÐÀû ÇüÅ º¯È­¿¡ ÀÇÇÑ °ÍÀÎÁö¿¡ ´ëÇؼ­´Â ºÐ¸íÇÏ°Ô ¾Ë·ÁÁø °ÍÀÌ
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º» ³í¹®Àº Spraque-Dawely¿Í Fischer 344 µÎÁ¾ÀÇ ¼ýÁã 20¸¶¸®¸¦ ÀÌ¿ëÇÏ¿© °¢Á¾À» 6°³¿ù
°ú 30°³¿ùÀÇ ¿¬·ÉÀ¸·Î 2±ºÀ¸·Î ³ª´©¾î¼­ ¿¬·É¿¡ µû¸¥ ±¸°­Á¡¸·³» ½Å°æ¼¶À¯¿Í ½Å°æÁ¾¸»ÀÇ Àü
ÀÚÇö¹Ì°æÀû Ư¼ºÀÇ º¯È­¸¦ °üÂûÇÏ°í, ´ÜÀ§¸éÀû´ç ºÐÆ÷ÇÏ°í ÀÖ´Â ½Å°æ¿ä¼ÒÀÇ º¯È­¸¦ Á¤·®ÇØ
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1. ±¸°­Á¡¸·¿¡ ºÐÆ÷ÇÏ´Â ½Å°æ¼¶À¯¿Í ½Å°æÁ¾¸»ÀÇ ÀüÀÚÇö¹Ì°æÀû ÇüÅ¿¡ À־´Â ÀþÀº ¹é¼­
¿Í ´ÄÀº ¹é¼­ »çÀÌ¿¡ ÀÎÁ¤ÇÒ ¸¸ÇÑ ÁúÀû Â÷ÀÌ°¡ ¾ø¾ú´Ù.
2. ¿¬·ÉÁõ°¡¿¡ µû¶ó ±¸°­Á¡¸·ÀÇ »óÇdz» °£°Ý¿¡ Á¸ÀçÇÏ´Â ½Å°æ¿ä¼Ò´Â Àü¹ÝÀûÀ¸·Î °¨¼ÒÇÏ¿´
´Ù.
3. ÀÌ¿Í°°Àº °¨¼Ò´Â ½Å°æ¼¶À¯º¸´Ù ½Å°æÁ¾¸»ÀÇ °æ¿ì ´õ¿í ÇöÀúÇÏ°Ô ³ªÅ¸³µ´Ù.
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CONCLUSION
The present investigation characterized the fine structure of nerve fibers in oral
mucosae with respect to the manner in which presumed sensory fibers enter into the
intraepithelial space by penetration of the basal lamina. Quantitative comparison of nerve
fibers and endings in the epithelia are made in four selected areas of the oral cavity in
young and old rats. They include intraepithelial nerve fibers in the mucosae of the
tongue, soft palate, hard palate and cheek.
The following conclusions were made.
1. Little discernible qualitative difference exists between young and old animals,
concerning the fine structural characteristics of nerve fibers and nerve endings.
2. In old animals, significant reductions exist in the number of neural elements in the
intraepithelial space.
3. Such reductions are more evident in the number of nerve endings than that of
nerve fibers.

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