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Innentitelbild: Hexaphyrin Fused to Two Anthracenes (Angew. Chem. 39/2012)
Naoda, Koji,Mori, Hirotaka,Aratani, Naoki,Lee, Byung Sun,Kim, Dongho,Osuka, Atsuhiro WILEY‐VCH Verlag 2012 Angewandte Chemie Vol.124 No.39
<P><I>π</I>‐expandierte Porphyrinoide in denen aromatische Strukturteile an den Porphyrinring kondensiert sind, rücken zunehmend in den Blickpunkt. In ihrer Zuschrift auf S. 9994 ff. berichten D. Kim, A. Osuka et al. über die Bildung eines Hexaphyrins, das mit zwei Anthracenylsubstituenten oxidativ kondensiert wurde. Das rechteckige konjugierte System verleiht dem kondensierten Hexaphyrin eine bemerkenswerte rotverschobene und eine ungewöhnlich scharfe Q‐Banden‐ähnliche Absorption bei 1467nm. (Photos: kyoto‐design.jp)</P>
Naoda, Koji,Mori, Hirotaka,Oh, Juwon,Park, Kyu Hyung,Kim, Dongho,Osuka, Atsuhiro American Chemical Society 2015 Journal of organic chemistry Vol.80 No.23
<P>5,20-Di(pyridin-2-yl)-[28]hexaphyrin(1.1.1.1.1.1) 7 was prepared and characterized as a stable Huckel antiaromatic molecule with a dumbbell-like structure stabilized by effective intramolecular hydrogen bonding interactions involving the 2-pyridyl nitrogen atoms. Pd(II) metalation of 7 afforded two bis-Pd(II) complexes, 9-syn and 9-anti, whose structures are rigidly held by Pd(II) coordination, rendering 9-syn to be nonaromatic because of its highly distorted structure and 9-anti to be Huckel antiaromatic because of its enforced planar dumbbell structure. In contrast, protonation of 7 with methanesulfonic acid (MSA) led to the formation of its triprotonated species 7H(3), which has been shown to take on twisted conformations with Mobius aromaticity in CH2Cl2, while the structure was held to be a planar rectangular conformation in the crystal. Excited-state dynamics were measured for 7, 7H(3), 9-syn, and 9-anti, which indicated their electronic nature to be antiaromatic, aromatic, nonaromatic, and antiaromatic, respectively.</P>
Washio, Masakazu,Mori, Mitsuru,Mikami, Kazuya,Miki, Tsuneharu,Watanabe, Yoshiyuki,Nakao, Masahiro,Kubo, Tatsuhiko,Suzuki, Koji,Ozasa, Kotaro,Wakai, Kenji,Tamakoshi, Akiko Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.7
Background: The incidence of bladder cancer is lower in Asian than in Western countries. However, the crude incidence and mortality of bladder cancer have recently increased in Japan because of the increased number of senior citizens. We have already reported risk factors for urothelial cancer in a large population-based cohort study in Japan (JACC study). However, we did not evaluate the cancer risk in the upper and lower urinary tract separately in our previous study. Materials and Methods: Here we evaluated the risk of cancer death in the upper and lower urinary tracts, separately, using the database of the JACC study. The analytic cohort included 46,395 males and 64,190 females aged 40 to 79 years old. The Cox proportional hazard model was used to determine hazard ratios and their 95% confidence intervals. Results: Current smoking increased the risk of both upper and lower urinary tract cancer deaths. A history of kidney disease was associated with an increased risk of bladder cancer death, even after controlling for age, sex and smoking status. Conclusions: The present study confirmed that current smoking increases the risk of both upper and lower urinary tract cancer deaths and indicated the possibility that a history of kidney disease may be a risk factor for bladder cancer death in the Japanese population.
Risk Factors for Renal Cell Carcinoma in a Japanese Population
Washio, Masakazu,Mori, Mitsuru,Mikami, Kazuya,Miki, Tsuneharu,Watanabe, Yoshiyuki,Nakao, Masahiro,Kubo, Tatsuhiko,Suzuki, Koji,Ozasa, Kotaro,Wakai, Kenji,Tamakoshi, Akiko Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.21
The incidence of renal cell carcinoma (RCC) is high in Western and Northern Europe and North America, and low in Asia. Although the incidence of RCC in Japan is lower than the rates in the other industrialized countries, there is no doubt that it is increasing. In this paper, we would like to introduce the summary of findings of JACC study, which evaluate the risk factors for RCC in a Japanese population. JACC study suggests nine risk factors (i.e., smoking, obesity, low physical activity, hypertension, diabetes mellitus, kidney diseases, beef, fondness for fatty food and black tea) and one preventive factor (i.e., starchy roots such as taro, sweet potato and potato) in a Japanese population. In Japan, however, drinking black tea may be a surrogate for westernized dietary habits while eating starchy roots may be a surrogate for traditional Japanese dietary habits. Further studies may be needed to evaluate risk factors for RCC because the number of cases is small in our studies.