PMID- 17672303 OWN - NLM STAT- MEDLINE DCOM- 20090514 LR - 20201209 IS - 0001-6209 (Print) IS - 0001-6209 (Linking) VI - 47 IP - 3 DP - 2007 Jun TI - [Effect of Terric acid on the growth, cellular morphology and macromolecular synthesis of C. albicans]. PG - 447-51 AB - Terric acid,an antifungal metabolites produced by a marine mold Aspergillus flavis No. 179, was isolated and purified. The effects of terric acid at different concertrations on the growth and cellular morphology of C. albicans AS2, 538 were studied by the method of liquid dilution. The substance inhibits the growth of C. albicans AS2,538 obviously at low concentration and has fungicidal action at high concentration. The minimum inhibiting concentrations (MIC) and minimum lethal concentrations (MLC) on C. albicans AS2,538 were 6.25 microg/mL and 50 microg/mL, respectively. At Sub-MIC (3.13 microg/mL), terric acid inhibited the formation of pseudo-hyphal of C. albicans AS2, 538 and caused cell morphological change. After addition of terric acid to the medium to final concentration of 50 microg/mL, cell morphology of C. albicans AS2, 538 was irregular and some cells turned bigger and disrupted. The effects of terric acid on the synthesis of macromolecules, DNA, RNA or proteins of C. albicans AS2, 538 were estimated by measurement of incorporation of radioactive precursors, 14C-Thymidine, 3H-Uridine or 14 C-Valine, respectively. When C. albicans AS2, 538 was incubated for 4h in 5 g/mL terric acid medium, the incorporation of radioactive isoleucine and uridine decreased 47.8%, 70.7%, respectively, Compared with controls incubated in commonly medium. However, the incorporation of [3H]thymidine did not have significant change. This results indicated that terric acid inhibits the synthesis of protein and RNA but have no effect on DNA synthesis in a C. albicans AS2,538. FAU - Li, Shu-bin AU - Li SB AD - School of Life Science, South China Normal University, Guangzhou 510631, China. zhourc@scnu.edu.cn FAU - Wang, Jun AU - Wang J FAU - Zhong, Ying-chang AU - Zhong YC LA - chi PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Wei Sheng Wu Xue Bao JT - Wei sheng wu xue bao = Acta microbiologica Sinica JID - 21610860R RN - 0 (Antifungal Agents) RN - 0 (Benzoquinones) RN - 0 (DNA, Fungal) RN - 0 (Fungal Proteins) RN - 0 (Heterocyclic Compounds, 2-Ring) RN - 0 (RNA, Fungal) RN - 0 (terric acid) SB - IM MH - Antifungal Agents/metabolism/*pharmacology MH - Aspergillus/chemistry/metabolism MH - Benzoquinones/metabolism/*pharmacology MH - Candida albicans/cytology/*drug effects/*growth & development/metabolism MH - DNA Replication/drug effects MH - DNA, Fungal/genetics/*metabolism MH - Fungal Proteins/genetics/*metabolism MH - Heterocyclic Compounds, 2-Ring/metabolism/*pharmacology MH - Protein Biosynthesis/drug effects MH - RNA, Fungal/genetics/*metabolism EDAT- 2007/08/04 09:00 MHDA- 2009/05/15 09:00 CRDT- 2007/08/04 09:00 PHST- 2007/08/04 09:00 [pubmed] PHST- 2009/05/15 09:00 [medline] PHST- 2007/08/04 09:00 [entrez] PST - ppublish SO - Wei Sheng Wu Xue Bao. 2007 Jun;47(3):447-51.