Àá½Ã¸¸ ±â´Ù·Á ÁÖ¼¼¿ä. ·ÎµùÁßÀÔ´Ï´Ù.

Streptomyces exfoliatus°¡ »ý¼ºÇÏ´Â mutanase¿¡ ÀÇÇÑ ÀΰøÄ¡Å ¾ïÁ¦ ÀÛ¿ë

INHIBITION OF ARTIFICIAL PLAQUE BY MUTANASE PRODUCED FROM Streptomyces exfoliatus

´ëÇѼҾÆÄ¡°úÇÐȸÁö 1997³â 24±Ç 2È£ p.449 ~ 459
¼Ûµµ¿ø, ¾çÀç¹ü, Á¤Áø, À±¿µ¼ö,
¼Ò¼Ó »ó¼¼Á¤º¸
¼Ûµµ¿ø (  ) - Àü³²´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
¾çÀç¹ü (  ) - Àü³²´ëÇб³ ÀÇ°ú´ëÇÐ ¹Ì»ý¹°Çб³½Ç
Á¤Áø (  ) - Àü³²´ëÇб³ Ä¡°ú´ëÇÐ ¹Ì»ý¹°Çб³½Ç
À±¿µ¼ö (  ) - Àü³²´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

¿ä¾à
Streptomyces exfoliatusÀÇ mutanºÐÇØ ´É·Â¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â ÀÎÀÚ¿¡ ´ëÇØ ¾Ë¾Æ º¸°íÀÚ
blue mutanÀ» ÀÌ¿ëÇÑ ½ÇÇèÀ» ½Ç½ÃÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
Blue mutanÀÌ µé¾î ÀÖ´Â ¹èÁö¿¡¼­ Streptomyces exfoliatus¿¡ ÀÇÇÑ Åõ¸í´ë¸¦ º½À¸·Î½á
mutanase¿Í ºÐºñ¸¦ È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. Blue mutanÀÌ µé¾î ÀÖ´Â ¿©·¯ Á¾·ùÀÇ ¹èÁö Áß¿¡¼­
minimal essential agar »ó¿¡¼­ Streptomyces exfoliatus°¡ Åõ¸í´ë¸¦ Çü¼ºÇÏ¿´´Ù. Minimal
essential brothÀÇ pH°¡ 7.0ÀÏ ¶§ pH°¡ 5.5³ª 8.5ÀÏ ¶§º¸´Ù blue mutanÀÌ Àß ºÐÇصǾúÀ¸¸ç,
¹è¾ç ¿Âµµ°¡ 37¡É ¶§ 32¡É³ª 42¡É ¶§º¸´Ù Àß ºÐÇصǾú´Ù (P<0.05). Minimal essential broth
¿¡¼­ÀÇ blue mutanÀÇ ºÐÇØ´Â CaCl2 ³óµµ°¡ Áõ°¡ÇÒ¼ö·Ï(P<0.05), KCl ³óµµ°¡
10mMÀÏ ¶§ Áõ°¡ÇÏ¿´À¸³ª, MgCl2 ³óµµ´Â 0.1mM¿¡¼­ 6.4mMÀÇ ¹üÀ§¿¡¼­ ºñ
½ÁÇÏ¿´´Ù. Streptomyces exfoliatus ¹è¾ç »óû¾×À» 0.5% yeast extract¿Í 10% sucrose¸¦ ÷
°¡ÇÑ 2¹èÀÇ BHI broth¿¡ °¡ÇÑ °æ¿ì ±³Á¤¿ë wire»ó¿¡¼­ÀÇ Streptococcus mutans¿¡ ÀÇÇÑ ÀÎ
°øÄ¡Å Çü¼ºÀÌ À¯ÀǼºÀÖ°Ô ¾ïÁ¦µÇ¾ú´Ù(P<0.05).
ÀÌ»óÀÇ °á°ú¸¦ Á¾ÇÕÇϸé Streptomyces exfoliatus¿¡¼­ »ý¼ºµÇ´Â ¹è¾ç »óû ¾×³»ÀÇ
mutanase°¡ ÀΰøÄ¡Å Çü¼º¿¡ ¾ïÁ¦ ÀÛ¿ëÀÌ ÀÖ´Ù´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù.
#ÃÊ·Ï#
The main component of dental plaque is the mutan containing the a-1,3 bond. The
following results were obtained by using a blue mutan to assess the factors affecting
the mutan-digesting activity of Streptomyces exfoliatus isolated from soil.
A clear zone was produced by mutanase-producing Streptomyces exfoliatus on the
minimal essential agar containing blue mutan. Streptomyces exfoliatus digested more
blue mutan in the minimal essential broth at pH 7.0 than at pH 5.5 or 8.5. Streptomyces
exfoliatus digested more blue mutan at 37¡É than at 32¡É or 42¡É(P<0.05). When the
concentration of CaCl2 was increased in the minimal essential broth, the
digestion of blue mutan was increased(P<0.05). The optimal concentration of KCl was
10mM to digest blue mutan, but a similar amount of blue mutan was digested at the
range of 0.1mM to 6.4mM of MgCl2. When the culture supernatant of
Streptomyces exfoliatus was mixed with 2X brain heart infusion broth containing 0.5%
yeast extract and 10% sucrose, less artificial plaque was formed by Streptococcus
mutans on the orthodontic wire(P<0.05).
These results indicated that the secretion of mutanase was identified in culture
supernatant of mutan-digesting Streptomyces exfoliatus, suppressing the formation of
artificial plaque by Streptococcus mutans.

Å°¿öµå

¿ø¹® ¹× ¸µÅ©¾Æ¿ô Á¤º¸

 

µîÀçÀú³Î Á¤º¸

KCI