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Flow-based queue management for fairness control in high-bandwidth network

Science China(Information Sciences) 2016年第6期59卷 261-263页

作者： wonjun choi Ramneek SEKHON Woojin SEOK Department of Science and Technology Information Science Korea University of Science & Technology Department of Advanced KREONET Application Support Korea Institute of Science and Technology Information

Dear editor,With the development of information equipment and growth of broadband network,the progress of Internet has changed from the network with modem speed in the past to the *** essential problem in the use of the network in a variety of fields is to use the network resource efficiently distributing the limited bandwidth[1].If congestion occurs in high-bandwidth network,slow rate flow and fast rate flow will experience

关键词： Flow-based queue management for fairness control in high-bandwidth network high

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The Effect of Phosphatase and Tension Homolog (PTEN) on Homeostasis of the Periodontal Ligament

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Open Journal of Stomatology 2022年第3期12卷 87-95页

作者： wonjun choi Won Hee Lim Department of Orthodontics School of Dentistry & Dental Research Institute Seoul National University Seoul Korea

Aim: Phosphatase and tension homolog (PTEN) has been known to maintain homeostatic control over the body. The roles of PTEN in periodontal complex are unknown. The purpose of this study was to investigate the role of PTEN in periodontal structures by removing PTEN from osteoblasts and odontoblasts. Materials and Methods: The function of this endogenous PTEN was evaluated by conditionally eliminating the PTEN gene using an Osteocalcin (OCN) Cre driver. The resulting OCN-Cretg/+;Ptenfl/fl mice were examined using micro-CT and histology, immunohistochemical analyses for osteogenic markers in the periodontal ligament (PDL) and bone turnover. Results: Bone apposition was increased around molar areas accompanying deposition of cementum in micro CT. Osteoprogenitor markers except for OCN in the PDL maintained their expression in both wild-type and OCN-Cretg/+;Ptenfl/fl mice. Both alkaline phosphatase activity and osteoclast activity increased in the PDL of OCN-Cretg/+;Ptenfl/fl mice compared to those in wild-type mice. Conclusions: Loss of PTEN causes an increase of bone turnover in the periodontal surrounding tissues with an increase of cementogenesis. These findings underscore the effect of PTEN on homeostasis of the periodontal ligament.

关键词： Phosphatase and Tension Homolog (PTEN) Periodontal Ligament (PDL)

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