Cell and Tissue Banking

, Volume 20, Issue 4, pp 579–583 | Cite as

Effect of glycerol concentrations and temperatures on epidermal growth factor protein expression in preserved canine amniotic membrane

  • Panrawee PhoomvuthisarnEmail author
  • Gunnaporn Suriyaphol
  • Nalinee Tuntivanich


Amniotic membrane has been widely applied as a biological graft in both medical and veterinary practice. In ophthalmology, epidermal growth factor (EGF) in human amniotic membrane (HAM) promotes corneal epithelial cell proliferation and migration, thus it facilitates corneal wound healing. In dogs, with limited cryopreserved HAM availability, different cold glycerol preserving protocols have been developed for the storage canine amniotic membrane (CAM). This study aimed to study protein expression of EGF in CAM preserved with different concentrations of glycerol and storage temperatures, using enzyme-linked immunosorbent assay. CAM preserved in 50% glycerol and 99.5% glycerol and kept at 4 and − 20 °C for 7–30 days were compared. We found that preserving membrane with 50% glycerol at − 20 °C has significantly higher EGF protein expression compared with that at 4 °C (p < 0.05). There was a trend that the storage in 50% glycerol achieved higher EGF protein expression than 99.5% glycerol at both 4 °C and − 20 °C. In conclusion, 50% glycerol at − 20 °C was the best condition to preserve CAM in our study. Therefore, there is likely an alternative method to maintain level of EGF protein expression in preserved CAM.


Canine amniotic membrane Cold glycerol-preservation Enzyme linked immunosorbent assay Epidermal growth factor 



This study was funded by Grants for Development of New Faculty Staff, Ratchadaphiseksomphot Endowment Fund, Chulalongkorn University (Grant No. RGN-2559-063-05-30). We would like to acknowledge staffs of the Ophthalmology Unit and Obstretic Gynaecology and Reproduction Unit, Small Animal Teaching Hospital and Biochemistry Unit, Faculty of Veterinary Science, Chulalongkorn University for their help and support.


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© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Department of Surgery, Faculty of Veterinary ScienceChulalongkorn UniversityBangkokThailand
  2. 2.Biochemistry Unit, Department of Physiology, Faculty of Veterinary ScienceChulalongkorn UniversityBangkokThailand

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