Efficient Photodynamic Killing of Gram-Positive Bacteria by Synthetic Curcuminoids.
Int J Mol Sci
; 21(23)2020 Nov 27.
Article
in En
| MEDLINE
| ID: mdl-33261011
ABSTRACT
In our previous study, we have demonstrated that curcumin can efficiently kill the anaerobic bacterium Propionibacterium acnes by irradiation with low-dose blue light. The curcuminoids present in natural plant turmeric mainly include curcumin, demethoxycurcumin, and bisdemethoxycurcumin. However, only curcumin is commercially available. Eighteen different curcumin analogs, including demethoxycurcumin and bisdemethoxycurcumin, were synthesized in this study. Their antibacterial activity against Gram-positive aerobic bacteria Staphylococcus aureus and Staphylococcus epidermidis was investigated using the photodynamic inactivation method. Among the three compounds in turmeric, curcumin activity is the weakest, and bisdemethoxycurcumin possesses the strongest activity. However, two synthetic compounds, (1E,6E)-1,7-bis(5-methylthiophen-2-yl)hepta-1,6-diene-3,5-dione and (1E,6E)-1,7-di(thiophen-2-yl)hepta-1,6-diene-3,5-dione, possess the best antibacterial activity among all compounds examined in this study. Their chemical stability is also better than that of bisdemethoxycurcumin, and thus has potential for future clinical applications.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Photochemotherapy
/
Diarylheptanoids
/
Microbial Viability
/
Gram-Positive Bacteria
Language:
En
Journal:
Int J Mol Sci
Year:
2020
Document type:
Article
Affiliation country:
Taiwan