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Differential expression of system L amino acid transporters during wound healing process in the skin of young and old rats
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- Authors
- Issue Date
- 2008-03
- Publisher
- Pharmaceutical Society of Japan
- Citation
- Biol Pharm Bull., 31, 395-399
- Keywords
- amino acid ; system L amino acid transporter ; wound healing ; aging ; regeneration
- Abstract
- In order to elucidate the role of the system L-type amino acid transporters (LATs) in the wound healing process of aged and young subjects, we investigated the expression of LAT1, LAT2 and their subunit 4F2hc in the skin healing process after artificial wounds of dorsal skin in the young and old rats. Methods: The 1 cm full-thickness incisional wounds were made through the skin and panniculus carnosus muscle. The wounds were harvested at days 1, 3, 5 and 7 post-wounding, the experimental controls were harvested the skin of rat without wounds and the various analyses were performed. Results: In young rats, gradually and noticeable wound healing was detected, however, in old rats, wound healing was found to be greatly delayed. In young rats, the expression of LAT1 was increased rapidly on the day 1 after wound induction, on the other hand, in old rats, the expression of LAT1 after wound induction was not different from the control group. In young rats, the expression of LAT2 after the induction of wound was not different from the control group, however in old rats, the expression of LAT2 on the day 1 of wound induction was rapidly elevated. Conclusion: These results suggest that the LAT1 and LAT2 increase in the wound healing process after cell injury in young and old rats, respectively.
- ISSN
- 0918-6158
- Language
- English
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