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Re-epithelialization of the Buccal Mucosa after Alkaline Chemical Injury
Takaichi, Saneyuki,Muramatsu, Takashi,Lee, Jong-Min,Jung, Han-Sung,Shinozaki, Naoshi,Katakura, Akira,Yamane, Gen-yuki JAPAN SOCIETY OF HISTOCHEMISTRY AND CYTOCHEMISTRY 2014 Acta histochemica et cytochemica Vol.47 No.5
<P>Alkaline conditions in the oral cavity may be caused by a variety of stimuli, including tobacco products, antacids, alkaline drinking water and bicarbonate toothpaste. However, the effects of an alkaline pH on the oral mucosa had not been elucidated. The purpose of this study was to investigate how basal keratinocytes are actively involved in re-epithelialization after alkaline chemical injury. We generated epithelial defects in the oral mucosa of mice by applying an alkaline chemical, and the localization of cytokeratin 13, cytokeratin 14, PCNA and p63 was investigated during the re-epithelialization process. PCNA- and p63-positive staining was seen in basal cells covering the wound surface at 1 day after the chemical injury. Cytokeratin 14-positive and PCNA-negative basal keratinocytes were localized in a few layers of the wound epithelium during epithelial outgrowth. Cytokeratin 14-positive and PCNA-positive basal keratinocytes, indicating proliferation, were localized over the entire layer of the epithelium at the wound margin. These results imply that basal keratinocytes at the wound margin migrate to the wound surface, provoke differentiation and keratinization during epithelial outgrowth and that epithelial cells are supplied from the wound margin to the epithelial outgrowth after alkaline chemical injury.</P>
Copper complexes of the non-innocent β-diketiminate ligand containing phenol groups
Takaichi, June,Ohkubo, Kei,Sugimoto, Hideki,Nakano, Motohiro,Usa, Daisuke,Maekawa, Hiroaki,Fujieda, Nobutaka,Nishiwaki, Nagatoshi,Seki, Shu,Fukuzumi, Shunichi,Itoh, Shinobu The Royal Society of Chemistry 2013 Dalton Transactions Vol.42 No.7
<P>A new type of non-innocent β-diketiminate ligand having redox active phenol groups (<B>LH<SUB>3</SUB></B>, fully protonated form) has been developed, and the structure, physical properties and reactivity of the supported copper(<SMALL>II</SMALL>) complex [Cu<SUP>II</SUP>(<B>L<SUP>3−</SUP></B>)]<SUP>−</SUP> (<B>L<SUP>3−</SUP></B>, fully deprotonated tri-anionic form) as well as the one-electron and two-electron oxidised complexes, [Cu<SUP>II</SUP>(<B>L&z.rad;<SUP>2−</SUP></B>)] and [Cu<SUP>II</SUP>(<B>L<SUP>−</SUP></B>)]<SUP>+</SUP>, have been examined in detail. The two-electron oxidised form [Cu<SUP>II</SUP>(<B>L<SUP>−</SUP></B>)]<SUP>+</SUP> exhibited hydrogen atom abstraction ability from 1,4-cyclohexadiene (CHD), whereas the one-electron oxidised form [Cu<SUP>II</SUP>(<B>L&z.rad;<SUP>2−</SUP></B>)] was found to disproportionate into [Cu<SUP>II</SUP>(<B>L<SUP>3−</SUP></B>)]<SUP>−</SUP> and [Cu<SUP>II</SUP>(<B>L<SUP>−</SUP></B>)]<SUP>+</SUP> during the course of the reaction with CHD.</P> <P>Graphic Abstract</P><P>Structure, physicochemical properties, and reactivity of the copper(<SMALL>II</SMALL>)-phenoxyl radical complexes of the non-innocent β-diketiminate ligand containing phenol groups are reported. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2dt32413j'> </P>
Photoadaptation of Green Sulfur Photosynthetic Bacteria Chlorobium phaeobacteroides
Hirabayashi, Hiroki,Ohmura, Satoshi,Ishii, Takasada,Takaichi, Shinichi,Uehara, Kaku Korean Society of Photoscience 2002 Journal of Photosciences Vol.9 No.2
Photoadaptation of Chlorobium (Cb.) phaeobacteroides was investigated under dim and strong light intensity. Absorption spectra of these whole cellIs were different each other. The Soret band intensity and the Qy bandwidth of BChl e in c디l grown under dim light intensity were smaller and more broadened than those under strong light intensity. From HPLC analysis of the pigments, total carotenoid (Car) / bacterochorolphyll (BChl) e ratio of cell increased wi1h increase of light intensities. But camposition of BChl e hamologs almost unchanged. Cb. phaeobacteroides contains 11 kinds of Car including isorenieratene and beta-isorenieratene as major Car. The campositions of Car were different for cells grown under dim and strong light intensities. In conclusion, Cb. phaeobacteroides changes total amount and canposition of Car to adapt various light intensities, while homolog canposition of BChle unchange.
( Yuko Watanabe ),( Miyuki Nogawa ),( Yoshiaki Kawagoe ),( Hitomi Fujii ),( Takaichi Miyakawa ) 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
Background: The national health survey in 2011 estimated nearly 20 million Japanese adults are being or possibly having diabetes mellitus. Treatment for type 2 diabetes mellitus requires multiple oral antidiabetic agents (OADs) and/or insulin in the long run. In 2009, the . rst DPP-4 inhibitor sitagliptin launched, and currently seven DPP-4 inhibitors are available in Japan. Aim: We conducted this survey in order to reveal changes in pharmacological treatment pattern, especially before and after the introduction of DPP-4 inhibitors, and to delineate its ef. cacy on glycemic control. Methods: We reviewed the electric medical record from March 1st to May 31st in 2008, that is one year before the introduction of DPP-4 inhibitor, and the same period in 2013. As for pharmacological agents, we focused on six classes of OAD, Insulin and GLP-1 receptor agonists (GLP-1 RAs). Primary outcomes were the number and proportion of patient using each drug. Secondary outcome was mean HbA<sub>1c</sub>. Statistical analyses were performed by JMP5.0.1J using SAS. Results: Total number of patient increased by 40 % in 5 years. While SU and BG users increased moderately and insulin users tended to decrease, DPP-4 inhibitors use reached to 65% of the patients in 2013 (Table). TZD use remained the same despite bladder or other cancer issue, mainly because our mean dose was less than 15mg/d (median 7.5mg/d). Glinides and AGI use declined rapidly probably due to the restriction on DPP-4 inhibitors when prescribed. HbA<sub>1c</sub> improved signi. cantly (P<0.05) compared to year 2008. Conclusions: The introduction of DPP-4 inhibitor made treatment pattern changed substantially, and glycemic control improved. Further study is needed to evaluate cost-effectiveness of multiple drug combinations.
Functional Implication of β-Carotene Hydroxylases in Soybean Nodulation
Kim, Yun-Kyoung,Kim, Sunghan,Um, Ji-Hyun,Kim, Kyunga,Choi, Sun-Kang,Um, Byung-Hun,Kang, Suk-Woo,Kim, Jee-Woong,Takaichi, Shinichi,Song, Seok-Bo,Lee, Choon-Hwan,Kim, Ho-Seung,Kim, Ki Woo,Nam, Kyoung He American Society of Plant Biologists 2013 PLANT PHYSIOLOGY - Vol.162 No.3
<P><I>Carotenoids are essential for nodule development in soybean.</I></P>