An Antioxidant Davallialactone from Phellinus baumii Enhances Sperm Penetration on In Vitro Fertilization of Pigs.
Davallialactone (DAVA) is a hispidin analogue derived from the medicinal fungus Phellinus baumii. We examined the effect of DAVA on in vitro fertilization (IVF) of pigs. Boar spermatozoa were incubated in fertilization medium with varying concentrations of DAVA, then sperm motility and reactive oxygen species (ROS) level were evaluated. Higher sperm motility was found following the addition of 0.5 or 1 µM DAVA after incubation than addition of other concentrations or controls. ROS level decreased significantly with the addition of DAVA. The rate of normal fertilization was higher in the presence of 1 µM DAVA (65.1%) than were those of other concentrations or controls (45.4~59.4%), and the highest total fertilization rate (mono- and polyspermic oocytes) was observed at 1 µM DAVA (83%). In conclusion, addition of DAVA to fertilization medium improved sperm motility, and reduced ROS level so as to potentially improve sperm-oocyte binding in IVF, suggesting the potential of a compound isolated from mushrooms in assisted reproductive technology for humans and animals.
Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 54596, Korea.
Young-Joo
YJ
Yi
Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 54596, Korea.
In-Kyoung
IK
Lee
Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 54596, Korea.
Sang-Myeong
SM
Lee
Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 54596, Korea.
Bong-Sik
BS
Yun
Davallialactone; In vitro fertilization; Phellinus baumii; Pig; Spermatozoa