Formulation of Cream Containing Bacteriophage for the Control of Pseudomonas aeruginosa

Main Article Content

Tranuk Somnate

Abstract

Burn injuries are the major public health concern. In case of infecting with drug resistant bacteria in the wound area, the wound healing becomes more difficult. Pseudomonas aeruginosa is an opportunistic bacterium frequently found in burns and is a major cause of death. Silver zinc sulfadiazine cream is the current treatment for burn wounds to inhibit microorganisms on the wound. However, it has side effects in some burn patients. The use of bacteriophages to treat bacterial infections is an alternative way to control drug resistant bacteria but bacteriophages have limitations in treating infectious skin lesions due to their instability to the environment. The development of methods to protect bacteriophage particles can increase the chances of bacteriophage survival. The objectives of this study were to isolate and characterize a lytic phage specific to P. aeruginosa and to use it as an ingredient in the basic formula of cetomacrogol cream to control the growth of P. aeruginosa. One isolate of bacteriophage designated bacteriophage SH2 was isolated from wastewater collected from a hospital wastewater treatment pond. The host range of bacteriophage SH2 was determined by the spot test against 18 bacterial strains. The result revealed that it had specific lytic activity against P. aeruginosa. The study of thermal and pH tolerance test of the bacteriophage SH2 demonstrated that it was stable at temperatures ranging from 40°C to 60°C and at pH ranging from 6 to 8. When bacteriophage SH2 was used as an ingredient in the basic formula of cetomacrogol cream and its concentration in the cream was adjusted to be 1.0x107 PFU/gram, it was found that the bacteriophage was able to inhibit P. aeruginosa on an agar plate. The survival rate of bacteriophage SH2 in the cream was 79.6% at 4°C in light protected container for 35 days. This study demonstrates the potential of bacteriophages to be used in cosmeceutical products.

Article Details

Section
Research paper

References

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