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RISS 인기검색어
- 검색키워드
- 저자 : Michael Humphries (검색결과 3 건)
- 무료
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Jing Li,Jian Kang,Changzheng Wang,Jing Yang,Linda Wang,Ioannis Kottakis,Michael Humphries,Nanshan Zhong,China Omalizumab Study Group 대한천식알레르기학회 2016 Allergy, Asthma & Immunology Research Vol.8 No.4
Purpose: Omalizumab is the preferred add-on therapy for patients with moderate-to-severe persistent allergic asthma and has demonstrated efficacy and safety in various ethnicities. This study evaluated the efficacy and safety of omalizumab in Chinese patients with moderate-to-severe allergic asthma. Methods: This randomized, double-blind, parallel-group, placebo-controlled, phase III study assessed lung function, quality of life, asthma control, and safety of omalizumab after 24-week therapy in Chinese patients (18-75 years of age). Results: A total of 616 patients were randomized (1:1) to omalizumab or placebo. The primary endpoint, least squares mean treatment difference (LSM-TD) in morning peak expiratory flow (PEF) (omalizumab vs placebo), at Weeks >20-24 was 8.85 L/min (Full analysis set; P=0.062). Per-protocol analysis set showed significant improvements with LSM-TD of 11.53 L/min in mean mPEF at Weeks >20-24 (P=0.022). The FEV1 % predicted was significantly improved with omalizumab vs placebo from 8 to 24 weeks (after 24-week treatment: LSM-TD=4.12%; P=0.001). At Week 24, a higher proportion of omalizumab-treated patients achieved clinically relevant improvements in standardized AQLQ (58.2% vs 39.3%; LSM=0.51 vs 0.10; P<0.001) and ACQ (49.5% vs 35.5%; LSM=-0.51 vs -0.34; P=0.002) scores vs placebo. Total and nighttime symptom scores reduced significantly with omalizumab vs placebo (LSM-TD=-0.21, P=0.048 and -0.12, P=0.011, respectively). Although the study was not powered to study differences in exacerbation rates (P=0.097), exacerbations in winter months were less frequent in the omalizumab vs placebo group (2 vs 21). Adverse event and severe adverse event rates were comparable between omalizumab and placebo. Conclusions: Omalizumab improves lung function, quality of life, and asthma control in Chinese patients with moderate-to-severe persistent allergic asthma and has a good safety profile.
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Garcí,a-Iglesias, Miguel,Yum, Jun-Ho,Humphry-Baker, Robin,Zakeeruddin, Shaik M.,Pé,chy, Peter,Vá,zquez, Purificació,n,Palomares, Emilio,Grä,tzel, Michael,Nazeeruddin, Moham Royal Society of Chemistry 2011 Chemical science Vol.2 No.6
<P>We have designed and developed an unsymmetrical zinc phthalocyanine (TT9) sensitizer that consists of three <I>tert</I>-butyl and two carboxylic acid groups that act as “<I>push</I>” and “<I>pull</I>”, respectively. The two carboxylic acid groups graft the sensitizer onto the semiconductor surface resulting in enhanced stability under heat and light compared to the similar unsymmetrical zinc phthalocyanine (TT1) sensitizer that consists of three <I>tert</I>-butyl and only one carboxylic acid groups. The solar cells containing the TT9 and TT1 sensitizers with non-volatile electrolyte were subjected to light soaking conditions at 60 °C. Under these conditions, the short circuit current of the TT1 sensitized solar cell after 1000 h decreases to half of its initial value where as the TT9 sensitized solar cell remained the same demonstrating the influence of number of anchoring groups on the stability of zinc phthalocyanine sensitized solar cells.</P> <P>Graphic Abstract</P><P>Phthalocyanine TT9 (red) grafts onto the semiconductor surface resulting in enhanced stability compared to TT1 (black). <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c0sc00602e'> </P>
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High open-circuit voltage solid-state dye-sensitized solar cells with organic dye.
Chen, Peter,Yum, Jun Ho,De Angelis, Filippo,Mosconi, Edoardo,Fantacci, Simona,Moon, Soo-Jin,Baker, Robin Humphry,Ko, Jaejung,Nazeeruddin, Md K,Grä,tzel, Michael American Chemical Society 2009 NANO LETTERS Vol.9 No.6
<P>Solid-state dye-sensitized solar cells were fabricated using an organic dye, 2-cyanoacrylic acid-4-(bis-dimethylfluoreneaniline)dithiophene (JK2), which exhibits more than 1 V open-circuit potential (V(oc)). To scrutinize the origin of high voltage in these cells, transient V(oc) decay measurements and density functional theroy calculations of the interacting dye/semiconductor surface were performed. A negative conduction band shift was observed due to the favorable dipolar field exerted by the JK2 sensitizer to the TiO(2) surface, at variance with heteroleptic Ru(II)-dyes for which an opposite dipole effect was found, providing an increased V(oc).</P>
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