Original Article

Long exposure of argon plasma coagulation induces more thermal damage accompanied by a higher expression of NF-κB and caspase-3

Rahmat Wariz , Keng-Liang Ou, Muhammad Ruslin, Bahruddin Thalib, Chung-Ming Liu, Hsin-Hua Chou

Rahmat Wariz
Department of Prosthodontics, Faculty of Dentistry, Hasanuddin University, Makassar, Indonesia. Email: rahmatwariz@yahoo.com

Keng-Liang Ou
Department of Prosthodontic, Faculty of Dentistry, Hasanuddin University, Makassar, Indonesia Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan Department of Dentistry, Taipei Medical University-Shuang Ho Hospital, New Taipei City, Taiwan Department of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan Department of Prosthodontics, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia 3D Global Biotech Inc., New Taipei City, Taiwan

Muhammad Ruslin
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Hasanuddin University, Makassar, Indonesia

Bahruddin Thalib
Department of Prosthodontic, Faculty of Dentistry, Hasanuddin University, Makassar, Indonesia

Chung-Ming Liu
Department of Dentistry, College of Medicine, China Medical University, Taichung, Taiwan Biomedical Technology R & D Center, China Medical University Hospital, Taichung, Taiwan

Hsin-Hua Chou
Department of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan Dental Department of Wan-Fang Hospital, Taipei Medical University, Taipei , Taiwan
Online First: April 01, 2018 | Cite this Article
Wariz, R., Ou, K., Ruslin, M., Thalib, B., Liu, C., Chou, H. 2018. Long exposure of argon plasma coagulation induces more thermal damage accompanied by a higher expression of NF-κB and caspase-3. Journal of Dentomaxillofacial Science 3(1): 5-12. DOI:10.15562/jdmfs.v3i1.734

Objective: Long exposure of argon plasma coagulation (APC) causes thermal damage and apoptosis in tissues. However, whether the APC-induced thermal damage in tissues involves the expression of NF-κB and caspase-3 remains undetermined. In this study, we compared the effect of APC on liver damage at two different exposure time and tested the hypothesis that thermal injuries induced by APC are accompanied by induction of NF-κB and caspase-3 expression in rat liver.

Material and Methods: Liver injuries were induced in rats by an APC device with pulse mode for 2 or 4 seconds under the same frequency of power (40W). The animals were sacrificed 0, 3, 7 and 21 days after injury and the liver tissues were harvested and used for western blotting, histological and immunohistochemical analyses.

Results: Haematoxylin and eosin (H&E) stained sections of the liver tissues showed that two-second application of APC caused minimum thermal damage and apoptotic areas, less carbonization, and more fibrosis formation in liver than the four-second APC application at all time points examined. All of these APC-induced thermal effects and morphological changes in the two-second APC application group but not the four-second APC application group recovered 21 days after the treatment. Western blot results indicated that APC induced the expression of NF-κB on day 3, and peaked on days and 14. In the two-second APC application group, the expression of NF-κB returned to the normal level on day 28. However, the expression of NF-κB induced by 4 seconds of APC application remained high even 28 days after injury. The expression of caspase-3 induced by the 2 seconds or 4 seconds of APC application peaked at 7 or 14 days, respectively. Similarly, the APC-induce expression of caspase-3 returned to the normal level in the 2-second APC application group, but it still remained high in the 4-second APC application group even 28 days after injury. These results were further confirmed by The immunofluorescence data also indicated that APC exposure for 4 seconds induced a much higher expression of NF-κB than APC exposure for 2 seconds. The similar pattern was observed in the caspase-3 expression.

Conclusions: Taken together, our results show that 2-second APC exposure causes minimum liver injury accompanied by the expressions of NF-κB and casapase-3 which return to the normal level 28 days after injury. These findings strongly suggest that the shortest pulse mode (2 seconds) application of APC is a safe, convenient, and effective approach for the treatment of particularly thermosensitive tissues.


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