Research output: Contribution to journal › Article › peer-review
In vivo safety assessment of rhodomyrtone, a potent compound, from Rhodomyrtus tomentosa leaf extract. / Siriyong, Thanyaluck; Ontong, Julalak Chorachoo; Leejae, Sukanlaya; Suwalak, Sakol; Coote, Peter John; Voravuthikunchai, Supayang Piyawan.
In: Toxicology Reports, Vol. 7, 31.07.2020, p. 919-924.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - In vivo safety assessment of rhodomyrtone, a potent compound, from Rhodomyrtus tomentosa leaf extract
AU - Siriyong, Thanyaluck
AU - Ontong, Julalak Chorachoo
AU - Leejae, Sukanlaya
AU - Suwalak, Sakol
AU - Coote, Peter John
AU - Voravuthikunchai, Supayang Piyawan
N1 - This research was funded by the Thailand Research Fund Senior Research Scholar (Grant number RTA6180006).
PY - 2020/7/31
Y1 - 2020/7/31
N2 - BackgroundRhodomyrtus tomentosa (Aiton) Hassk. has been traditionally used to relieve various diseases. Rhodomyrtone, a bioactive acylphloroglucinol compound isolated from the leaves of Rhodomyrtus tomentosa, has been scientifically evidenced as a potential antibacterial agent. This study aimed to assess safety of rhodomyrtone in both invertebrate and vertebrate models.Material and MethodsSafety of rhodomyrtone was determined in an invertebrate model, Galleria mellonella as well as vertebrate models including zebrafish (Danio rerio) and murine. In addition, toxicity to human erythrocytes was also measured.ResultsTreatment of Galleria mellonella with rhodomyrtone at 100 mg/kg body weight up to four days showed no visible toxic effects (100 % survival). In zebrafish embryo model, at least 80 % survival of embryos was demonstrated when treated with rhodomyrtone at 0.5 μg/mL for three days. Prior to clinical trial, it is a prerequisite that rhodomyrtone has to be evaluated for its biocompatibility with human blood components. The results displayed that rhodomyrtone at 256 μg/mL did not cause any observable human erythrocyte haemolysis. Furthermore, preclinical assessment of rhodomyrtone formulation justified potential applications of rhodomyrtone in humans. Oral toxicity testing in a mouse model indicated the absence of systemic toxicity when the animals received up to 5000 mg/kg body weight of rhodomyrtone formulation for a period of fourteen days.ConclusionsAs the minimal inhibitory concentration of rhodomyrtone against most Gram-positive pathogens is 0.5−1 μg/mL, the results suggest that it should produce no toxic effects at concentrations used in human, thus support further development in pharmaceutical industries and public health applications.
AB - BackgroundRhodomyrtus tomentosa (Aiton) Hassk. has been traditionally used to relieve various diseases. Rhodomyrtone, a bioactive acylphloroglucinol compound isolated from the leaves of Rhodomyrtus tomentosa, has been scientifically evidenced as a potential antibacterial agent. This study aimed to assess safety of rhodomyrtone in both invertebrate and vertebrate models.Material and MethodsSafety of rhodomyrtone was determined in an invertebrate model, Galleria mellonella as well as vertebrate models including zebrafish (Danio rerio) and murine. In addition, toxicity to human erythrocytes was also measured.ResultsTreatment of Galleria mellonella with rhodomyrtone at 100 mg/kg body weight up to four days showed no visible toxic effects (100 % survival). In zebrafish embryo model, at least 80 % survival of embryos was demonstrated when treated with rhodomyrtone at 0.5 μg/mL for three days. Prior to clinical trial, it is a prerequisite that rhodomyrtone has to be evaluated for its biocompatibility with human blood components. The results displayed that rhodomyrtone at 256 μg/mL did not cause any observable human erythrocyte haemolysis. Furthermore, preclinical assessment of rhodomyrtone formulation justified potential applications of rhodomyrtone in humans. Oral toxicity testing in a mouse model indicated the absence of systemic toxicity when the animals received up to 5000 mg/kg body weight of rhodomyrtone formulation for a period of fourteen days.ConclusionsAs the minimal inhibitory concentration of rhodomyrtone against most Gram-positive pathogens is 0.5−1 μg/mL, the results suggest that it should produce no toxic effects at concentrations used in human, thus support further development in pharmaceutical industries and public health applications.
KW - Toxicity
KW - Rhodomyrtone
KW - Invertebrate
KW - Vertebrate
U2 - 10.1016/j.toxrep.2020.07.013
DO - 10.1016/j.toxrep.2020.07.013
M3 - Article
VL - 7
SP - 919
EP - 924
JO - Toxicology Reports
JF - Toxicology Reports
SN - 2214-7500
ER -
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
ID: 269483823