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OHTANI, Yoshihisa,YONEZAWA, Tomo,SONG, Sang‐,Houn,TAKAHASHI, Tatsuyuki,ARDIYANTI, Astrid,SATO, Katsuyoshi,HAGINO, Akihiko,ROH, Sang‐,gun,KATOH, Kazuo Blackwell Publishing Asia 2011 Animal science journal Vol.82 No.1
<P><B>ABSTRACT</B></P><P>Although the functions of adiponectin, a differentiated adipocyte‐derived hormone, in regulating glucose and fatty acid metabolism are regulated by two subtypes of adiponectin receptors (AdipoRs; AdipoR1 and AdipoR2), those in ruminants remain unclear. Therefore we examined the messenger RNA (mRNA) expression levels of adiponectin and its receptors in various bovine tissues and mammary glands among different lactation stages, and the effects of lactogenic hormones (insulin, dexamethasone and prolactin) and growth hormone (GH) on mRNA expression of the AdipoRs in cultured bovine mammary epithelial cells (BMEC). AdipoRs mRNAs were widely expressed in various bovine tissues, but adiponectin mRNA expression was significantly higher in adipose tissue than in other tissues. In the mammary gland, although adiponectin mRNA expression was significantly decreased at lactation, AdipoR1 mRNA expression was significantly higher at peak lactation than at the dry‐off stage. In BMEC, lactogenic hormones and GH upregulated AdipoR2 mRNA expression but did not change that of AdipoR1. In conclusion, adiponectin and its receptor mRNA were expressed in various bovine tissues and the adiponectin mRNA level was decreased during lactation. These results suggest that adiponectin and its receptors ware changed in mammary glands by lactation and that AdipoRs mRNA expression was regulated by different pathways in BMEC.</P>
Reconfigurable Communication Satellite System "SoftSAT"
Nishinaga, Nozomu,Ogawa, Yasuo,Takayama, Yoshihisa,Takahashi, Takashi,Kubooka, Toshihiro,Hiroaki, Umehara Hanako 통신위성우주산업연구회 2002 Joint Conference on Satellite Communications Vol.2002 No.-
Satellite communications provides characteristics such as wide-area coverage and flexibility of network construction. Since an enormous budget and time are require for satellite development, however, it is difficult to implement the latest techniques onboard. Even of the latest communications technology is implemented at the time of launch, it is impossible to follow paradigm shifts in terrestrial network technology. In this paper, we propose a reconfigurable communication satellite system based on the formation-flight technique and inter-satellite communication technology. This satellite system consists of a group of layered satellites that can operate together like one satellite.