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ºÎÀ¯ »óÅÂ¿Í ¹ÙÀÌ¿ÀÇʸ§ »óÅ¿¡¼­ Mutans streptococci ÀÇ Erythrosine¿¡ ´ëÇÑ °¨¼ö¼º Æò°¡

Susceptibility of Mutans streptococci in the Planktonic and Biofilm State to Erythrosine

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°øÁ¤Àº ( Gong Jung-Eun ) - °­¸ª¿øÁÖ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
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À̽ÿµ ( Lee Si-Young ) - °­¸ª¿øÁÖ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
¹ÚÈ£¿ø ( Park Ho-Won ) - °­¸ª¿øÁÖ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
ÀÌÁÖÇö ( Lee Ju-Hyun ) - °­¸ª¿øÁÖ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº ºÎÀ¯ ¹× ¹ÙÀÌ¿ÀÇʸ§ »óÅÂÀÇ Mutans streptococci ¿¡¼­ Ä¡ÅÂ¿Í Ä¡¼® Âø»öÁ¦·Î Ä¡°ú Áø·á½Ç¿¡¼­ »ç¿ëÇÏ´Â ½Ä¿ë»ö¼ÒÀÎ ¿¡¸®½º·Î½Å¿¡ ´ëÇÑ °¨¼ö¼ºÀ» Á¶»çÇÏ´Â °ÍÀÌ´Ù.
¼¼±ÕÀº È£±â¼º Á¶°Ç¿¡ ¹è¾çÇÏ¿´°í, ¿¡¸®½º·Î½ÅÀº 0.02 - 10000 ¥ìg/LÀÇ ³óµµ·Î Èñ¼®ÇÏ¿´´Ù. ºÎÀ¯ »óÅ S. mutans ÀÇ ÃÖ¼Ò ¾ïÁ¦ ³óµµ(MIC)¿Í ÃÖ¼Ò »ì±Õ ³óµµ(MBC)¸¦ ÃøÁ¤ÇÏ¿´´Ù. ¼¼±ÕÀ» ¹è¾çÇÏ¿© ¹ÙÀÌ¿ÀÇʸ§À» Çü¼ºÇÑ ÈÄ, ÃÖ¼Ò ¹ÙÀÌ¿ÀÇʸ§ ¾ïÁ¦ ³óµµ(MBIC) ¹× ÃÖ¼Ò ¹ÙÀÌ¿ÀÇʸ§ ¹Ú¸ê ³óµµ(MBEC)¸¦ ÃøÁ¤ÇÏ¿´´Ù.
MIC¿Í MBC´Â 19.5 ¥ìg/L·Î µ¿ÀÏÇÏ°Ô ÃøÁ¤µÇ¾úÀ¸¸ç µû¶ó¼­ ¿¡¸®½º·Î½ÅÀº ºÎÀ¯ »óÅÂÀÇ S. mutans ¿¡ ´ëÇØ »ì±Õ È¿°ú¸¦ °¡Áö´Â °ÍÀ¸·Î³ªÅ¸³µ´Ù. MBIC, MBEC °ªÀº °¢°¢ 313 ¥ìg/L, 2500 ¥ìg/L·Î ÃøÁ¤µÇ¾ú´Ù. ÃøÁ¤µÈ MIC, MBC, MBIC´Â ½ÇÁ¦·Î Ä¡°ú¿¡¼­ »ç¿ëµÇ´Â ³óµµ¿¡ºñÇØ ³·Àº °ªÀÌ¸ç µû¶ó¼­ ÀÎü¿¡ ¹«ÇØÇÑ ³óµµ¿¡¼­ S. mutans ¸¦ ¾ïÁ¦ÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î º¸ÀδÙ.

The aim of this study was to investigate the susceptibility of Mutans streptococci in both planktonic and biofilm states to erythrosine.
S. mutans was cultured in brain-heart infusion (BHI) broth. Erythrosine was diluted in BHI broth and prepared at a concentration range of 0.02 - 10000 ¥ìg/L. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were measured using the microdilution method. After forming biofilms on 96-well plates, the minimum biofilm inhibitory concentration (MBIC) and minimum biofilm eradication concentration (MBEC) were measured.
S. mutans was susceptible to erythrosine in both planktonic and biofilm states. MIC and MBC values were both 19.5 ¥ìg/L for the planktonic state, while MBIC and MBEC values were 313 ¥ìg/L and 2500 ¥ìg/L, respectively, for the biofilm state.
Erythrosine (19.5 ¥ìg/L) exhibited a bactericidal effect on S. mutans (killing 99.9%) in the planktonic state. For biofilms, erythrosine inhibited biofilm growth and eradicated 99.9% of biofilm bacteria at higher concentrations than MIC and MBC. These MBIC and MBEC concentrations are much lower than known noxious doses, and the MIC, MBC, and MBIC values were even lower than clinical concentrations.

Å°¿öµå

Erythrosine; Mutans streptococci; Biofilm; Susceptibility

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