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He S, Liu K, Xiong Y, Hou A, Zhao X, Zhao J, Liu Q. Fine-Tuning Optoelectronic Features in Organic-Inorganic Hybrid Metal Halides: A Focus on the Phenylbutanammonium Series. Inorg Chem 2024; 63:6564-6570. [PMID: 38531079 DOI: 10.1021/acs.inorgchem.4c00745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Extensive research has been dedicated to exploring the potential applications of organic-inorganic hybrid metal halides in optoelectronics. This study presents findings on three metal halides based on phenylbutanammonium (PBA). Specifically, (PBA)2MnBr4(H2O)2 and (PBA)2Sn(IV)Cl6 exhibit zero-dimensional structures with P21/c and Pnma space groups, respectively, while (PBA)2Sn(II)Br4 features a two-dimensional structure with P1̅ space group. Under UV excitation, (PBA)2MnBr4(H2O)2 exhibits double emission arising from the 4T1 → 6A1 transitions of Mn2+ in two distinct coordination environments. The emission spectrum of (PBA)2SnCl6 aligns with that of PBACl, suggesting that the luminescence originates from the organic component. The yellow emission of (PBA)2SnBr4 is attributed to the self-trapped excitons. This study introduces the PBA series of compounds, revealing that varying metal ions and halogen combinations can adjust the structural dimensions and influence optical properties. The insights gained from this work serve as a guide for the preparation of efficient white light-emitting diodes.
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Affiliation(s)
- Shihui He
- State Key Laboratory of HVDC (Electric Power Research Institute, China Southern Power Grid), Guangzhou, Guangdong 510663, China
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Kunjie Liu
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yan Xiong
- State Key Laboratory of HVDC (Electric Power Research Institute, China Southern Power Grid), Guangzhou, Guangdong 510663, China
| | - An Hou
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xianlong Zhao
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jing Zhao
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Quanlin Liu
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China
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Hou A, Fan L, Xiong Y, Lin J, Liu K, Chen M, Guo Z, Zhao J, Liu Q. Zero-Dimensional Halides with ns 2 Electron (Sb 3+) Activation to Generate Broad Photoluminescence. Inorg Chem 2023. [PMID: 37478468 DOI: 10.1021/acs.inorgchem.3c01726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2023]
Abstract
Organic-inorganic metal halides (OIMHs) have various crystal structures and offer excellent semiconducting properties. Here, we report three novel OIMHs, (PPA)6InBr9 (PPA = [C6H5(CH2)3NH3]+), (PBA)2SbBr5, and (PBA)2SbI6 (PBA = [C6H5(CH2)4NH3]+), showing typical zero-dimensional (0D) structure, octahedra dimers, and corner-sharing one-dimensional chains and crystallized in the monoclinic system with P21, P21/c, and C2/c space groups, respectively. (PPA)6InBr9, (PBA)2SbBr5, and (PBA)2SbI6 have experimental optical band gaps of ∼3.16, ∼2.24, and 1.48 eV, respectively. (PPA)6InBr9 exhibits bright-orange light emission centered at 642 nm with a full-width at half-maximum of 179 nm (0.51 eV) and a Stokes shift of 277 nm (1.46 eV). After Sb3+ doping, the peak position did not change, and the photoluminescence quantum yield increased significantly from 9.2 to 53.0%. The efficient emission of Sb:(PPA)6InBr9 stems from the isolated ns2 luminescent center and strong electron-phonon coupling, making the spin-forbidden 3P1-1S0 observable. By combining commercial blue and green phosphors with orange-red-light-emitting (PPA)6In0.99Sb0.01Br9, a white-light-emitting diode was constructed, with the color-rendering index reaching up to 92.3. Our work highlights three novel 0D OIMHs, with chemical doping of Sb3+ shown to significantly enhance the luminescence properties, demonstrating their potential applications in solid-state lighting.
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Affiliation(s)
- An Hou
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering and Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Liubing Fan
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering and Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yan Xiong
- State Key Laboratory of HVDC (Electric Power Research Institute, China Southern Power Grid), Guangzhou, Guangdong Province 510663, China
| | - Jiawei Lin
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering and Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Kunjie Liu
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering and Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Mingyue Chen
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering and Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Zhongnan Guo
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering and Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jing Zhao
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering and Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Quanlin Liu
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering and Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
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Cao J, Liu K, Quan M, Hou A, Jiang X, Lin Z, Zhao J, Liu Q. Second harmonic generation from symmetry breaking stimulated by mixed organic cations in zero-dimensional hybrid metal halides. Dalton Trans 2023. [PMID: 37357846 DOI: 10.1039/d3dt01209c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
Mixing cations with different chemical properties to induce the generation of asymmetric structures is a new approach for tuning the optical properties of hybrid organic-inorganic metal halides (HOIMHs). In this study, zero-dimensional (C9N3H15)(C9H13SO)MBr6 (M = Bi/Sb, [C9N3H15]2+ = [(C4N2H10)(C5NH5)]2+ and [C9H14SO]+ = [CH3(C6H4)OS(CH3)2]+) are synthesized. Two different cations cause both compounds to crystallize in the polar space group P212121, thus resulting in significant phase matchable second harmonic generation under a 1064 nm laser excitation. Thus, (C9N3H15)(C9H13SO)BiBr6 and (C9N3H15)(C9H13SO)SbBr6 exhibit intensities that are approximately 1.8 and 1.7 times that of KH2PO4, respectively. The results of density functional theory calculations show that both (C9N3H15)(C9H13SO)BiBr6 and (C9N3H15)(C9H13SO)SbBr6 exhibit direct bandgaps of 2.95 and 2.81 eV, respectively. Additionally, because of the distortion of the inorganic octahedra, (C9N3H15)(C9H13SO)SbBr6 exhibited bright yellow emission at room temperature, which is attributed to ns2 fluorescence emission. We believe that the symmetry of the HOIMH crystal structure can be broken by introducing spatially differentiated bifunctional organic cations, which consequently enables even-order nonlinear activities.
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Affiliation(s)
- Jindong Cao
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Kunjie Liu
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Mingzhen Quan
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - An Hou
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Xingxing Jiang
- Key Lab Functional Crystals and Laser Technology of Chinese Academy of Sciences, Technical Institute of Physics and Chemistry Chinese Academy of Sciences, Beijing 100190, P. R. China.
| | - Zheshuai Lin
- Key Lab Functional Crystals and Laser Technology of Chinese Academy of Sciences, Technical Institute of Physics and Chemistry Chinese Academy of Sciences, Beijing 100190, P. R. China.
| | - Jing Zhao
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Quanlin Liu
- The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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Swanson W, Beard C, Hou A, Hornik C, Jeong D. PARENT-REPORTED OUTCOMES DESIGN IN A DIGITAL EARLY ALLERGEN FEEDING STUDY WITH ECZEMATOUS AND NON-ECZEMATOUS INFANTS. Ann Allergy Asthma Immunol 2022. [DOI: 10.1016/j.anai.2022.08.694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Zhang Y, Hou A, Zhuang XR, Gao XJ, Zhang GX. Silenced fatty acid-binding protein 4 suppresses epithelial-mesenchymal transition of endometriosis via the phosphatidyl inositol 3-kinase/protein kinase B axis. J BIOL REG HOMEOS AG 2021; 35:7. [PMID: 34281297 DOI: 10.23812/21-36-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Y Zhang
- Department of Gynecology, the Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, China
| | - A Hou
- Department of Gynecology, the University of Chinese Academy of Sciences Shenzhen Hospital, Shenzhen, Guangdong Province, China
| | - X R Zhuang
- Department of Gynecology, the Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, China
| | - X J Gao
- Department of Gynecology, the Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, China
| | - G X Zhang
- Department of Gynecology, the Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, China
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Pakhchanian H, Raiker R, Alam K, Hou A, Patel V. 335 Trends in dermatological prescribing patterns during the COVID pandemic. J Invest Dermatol 2021. [PMCID: PMC8053924 DOI: 10.1016/j.jid.2021.02.357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Hoffman L, Hou A, Chaitowitz M, Lowes M, Cohen S. 235 Anemia in hidradenitits suppurativa. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Bhattacharyya N, Hou A. A pentaplex PCR assay for detection and characterization of Vibrio vulnificus and Vibrio parahaemolyticus isolates. Lett Appl Microbiol 2013; 57:233-40. [PMID: 23682646 DOI: 10.1111/lam.12101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 04/25/2013] [Accepted: 05/15/2013] [Indexed: 11/27/2022]
Abstract
Vibrio parahaemolyticus and Vibrio vulnificus are the leading causes of seafood-related illnesses and also can cause wound infections. These bacteria often co-exist in marine and estuarine environments. However, there have been no reported protocols that can detect and characterize (i.e. pathogenic or nonpathogenic) them in a single PCR. In this study, we developed a pPCR assay with a combination of two species-specific and three pathogenic-specific PCR primers to simultaneously detect virulent (viuB in V. vulnificus and tdh/trh in V. parahaemolyticus) and nonvirulent (vvhA in V. vulnificus and tlh in V. parahaemolyticus) markers of the two species in bacterial isolates. The assay was validated by three methods. First, the pPCR was used to characterize 300 bacterial isolates consisting of seven reference strains and 293 environmental strains isolated from the Gulf of Mexico water. Results were compared with characterizations based on single-gene PCR amplifications and previously published multiplex PCR protocols. Second, 51 isolates characterized with the pPCR were analysed by 16S rRNA sequencing to confirm any false-negative/positive reaction. Finally, the effectiveness of the assay for heterogeneous bacterial samples was validated. The pPCR correctly characterized isolates from the Gulf with an efficiency of 96·6-98·7%.
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Affiliation(s)
- N Bhattacharyya
- Department of Environmental Sciences, School of the Coast and Environment, Louisiana State University, Baton Rouge, LA 70803, USA
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Zhang G, Wang Y, Zhang Y, Wan X, Li J, Liu K, Wang F, Liu K, Liu Q, Yang C, Yu P, Huang Y, Wang S, Jiang P, Qu Z, Luan J, Duan H, Zhang L, Hou A, Jin S, Hsieh TC, Wu E. Anti-cancer activities of tea epigallocatechin-3-gallate in breast cancer patients under radiotherapy. Curr Mol Med 2012; 12:163-76. [PMID: 22280355 DOI: 10.2174/156652412798889063] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2011] [Revised: 10/09/2011] [Accepted: 10/10/2011] [Indexed: 12/31/2022]
Abstract
The purpose of this study was to test the hypothesis that administration of epigallocatechin-3-gallate (EGCG), a polyphenol present in abundance in widely consumed tea, inhibits cell proliferation, invasion, and angiogenesis in breast cancer patients. EGCG in 400 mg capsules was orally administered three times daily to breast cancer patients undergoing treatment with radiotherapy. Parameters related to cell proliferation, invasion, and angiogenesis were analyzed while blood samples were collected at different time points to determine efficacy of the EGCG treatment. Compared to patients who received radiotherapy alone, those given radiotherapy plus EGCG for an extended time period (two to eight weeks) showed significantly lower serum levels of vascular endothelial growth factor (VEGF), hepatocyte growth factor (HGF), and reduced activation of metalloproteinase-9 and metalloproteinase-2 (MMP9/MMP2). Addition of sera obtained from patients treated with combination of radiotherapy and EGCG feeding for 2-8 weeks to in vitro cultures of highly-metastatic human MDA-MB-231 breast cancer cells resulted in the following significant changes: (1) suppression of cell proliferation and invasion; (2) arrest of cell cycles at the G0/G1 phase; (3) reduction of activation of MMP9/MMP2, expressions of Bcl-2/Bax, c-Met receptor, NF-κB, and the phosphorylation of Akt. MDA-MB-231 cells exposed to 5-10 µM EGCG also showed significant augmentation of the apoptosis inducing effects of γ-radiation, concomitant with reduced NF-κB protein level and AKT phosphorylation. These results provide hitherto unreported evidence that EGCG potentiated efficacy of radiotherapy in breast cancer patients, and raise the possibility that this tea polyphenol has potential to be a therapeutic adjuvant against human metastatic breast cancer.
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Affiliation(s)
- G Zhang
- Laboratory of Molecular Pharmacology, School of Pharmacy, Yantai University, Yantai, Shandong Province 264005, China.
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Kong H, Li Z, Zhang W, Yuan L, Hou A. e0045 Effects of Ginsenoside-Rbl on aldosterone-induced elastin production in rat cardiac fibroblasts ex vivo. Heart 2010. [DOI: 10.1136/hrt.2010.208967.45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Bajaj S, Chen P, Longer DE, Hou A, Shi A, Ishibashi T, Zhang B, Brye KR. Planting Date and Irrigation Effects on Seed Quality of Early-Maturing Soybean in the Mid-South USA. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/15228860802228800] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- S. Bajaj
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, 115 Plant Science Building, Fayetteville, AR, 72701
| | - P. Chen
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, 115 Plant Science Building, Fayetteville, AR, 72701
| | - D. E. Longer
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, 115 Plant Science Building, Fayetteville, AR, 72701
| | - A. Hou
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, 115 Plant Science Building, Fayetteville, AR, 72701
| | - A. Shi
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, 115 Plant Science Building, Fayetteville, AR, 72701
| | - T. Ishibashi
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, 115 Plant Science Building, Fayetteville, AR, 72701
| | - B. Zhang
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, 115 Plant Science Building, Fayetteville, AR, 72701
| | - K. R. Brye
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, 115 Plant Science Building, Fayetteville, AR, 72701
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Sinigalliano CD, Gidley ML, Shibata T, Whitman D, Dixon TH, Laws E, Hou A, Bachoon D, Brand L, Amaral-Zettler L, Gast RJ, Steward GF, Nigro OD, Fujioka R, Betancourt WQ, Vithanage G, Mathews J, Fleming LE, Solo-Gabriele HM. Impacts of Hurricanes Katrina and Rita on the microbial landscape of the New Orleans area. Proc Natl Acad Sci U S A 2007; 104:9029-34. [PMID: 17488814 PMCID: PMC1885622 DOI: 10.1073/pnas.0610552104] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2006] [Indexed: 11/18/2022] Open
Abstract
Floodwaters in New Orleans from Hurricanes Katrina and Rita were observed to contain high levels of fecal indicator bacteria and microbial pathogens, generating concern about long-term impacts of these floodwaters on the sediment and water quality of the New Orleans area and Lake Pontchartrain. We show here that fecal indicator microbe concentrations in offshore waters from Lake Pontchartrain returned to prehurricane concentrations within 2 months of the flooding induced by these hurricanes. Vibrio and Legionella species within the lake were more abundant in samples collected shortly after the floodwaters had receded compared with samples taken within the subsequent 3 months; no evidence of a long-term hurricane-induced algal bloom was observed. Giardia and Cryptosporidium were detected in canal waters. Elevated levels of fecal indicator bacteria observed in sediment could not be solely attributed to impacts from floodwaters, as both flooded and nonflooded areas exhibited elevated levels of fecal indicator bacteria. Evidence from measurements of Bifidobacterium and bacterial diversity analysis suggest that the fecal indicator bacteria observed in the sediment were from human fecal sources. Epidemiologic studies are highly recommended to evaluate the human health effects of the sediments deposited by the floodwaters.
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Affiliation(s)
- C. D. Sinigalliano
- *National Science Foundation–National Institute of Environmental Health Sciences Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Coral Gables, FL 33149
- Southeast Environmental Research Center
| | - M. L. Gidley
- *National Science Foundation–National Institute of Environmental Health Sciences Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Coral Gables, FL 33149
| | - T. Shibata
- *National Science Foundation–National Institute of Environmental Health Sciences Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Coral Gables, FL 33149
| | - D. Whitman
- Department of Earth Sciences, Florida International University, Miami, FL 33199
| | - T. H. Dixon
- *National Science Foundation–National Institute of Environmental Health Sciences Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Coral Gables, FL 33149
| | - E. Laws
- Louisiana State University School of the Coast and Environment, Baton Rouge, LA 70803
- Pacific Research Center for Marine Biomedicine, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI 96822
| | - A. Hou
- Louisiana State University School of the Coast and Environment, Baton Rouge, LA 70803
| | - D. Bachoon
- Georgia College and State University, Milledgeville, GA 31061
| | - L. Brand
- *National Science Foundation–National Institute of Environmental Health Sciences Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Coral Gables, FL 33149
| | - L. Amaral-Zettler
- **Woods Hole Center for Oceans and Human Health, Woods Hole, MA 02543
- Marine Biological Laboratory, Woods Hole, MA 02543; and
| | - R. J. Gast
- **Woods Hole Center for Oceans and Human Health, Woods Hole, MA 02543
- Woods Hole Oceanographic Institution, Woods Hole, MA 02543
| | - G. F. Steward
- Pacific Research Center for Marine Biomedicine, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI 96822
| | - O. D. Nigro
- Pacific Research Center for Marine Biomedicine, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI 96822
| | - R. Fujioka
- Pacific Research Center for Marine Biomedicine, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI 96822
| | - W. Q. Betancourt
- Pacific Research Center for Marine Biomedicine, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI 96822
| | - G. Vithanage
- Pacific Research Center for Marine Biomedicine, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI 96822
| | - J. Mathews
- *National Science Foundation–National Institute of Environmental Health Sciences Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Coral Gables, FL 33149
| | - L. E. Fleming
- *National Science Foundation–National Institute of Environmental Health Sciences Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Coral Gables, FL 33149
| | - H. M. Solo-Gabriele
- *National Science Foundation–National Institute of Environmental Health Sciences Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Coral Gables, FL 33149
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Hingorani A, Ascher E, Markevich N, Yorkovich W, Schutzer R, Hou A, Nahata S, Kallakuri S, Jacob T. The role of the endovascular surgeon for lower extremity ischemia. Acta Chir Belg 2004; 104:527-31. [PMID: 15571018 DOI: 10.1080/00015458.2004.11679609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
UNLABELLED Since the data investigating endovascular therapy performed by surgeons is scarce, we retrospectively reviewed our experience of endovascular procedures performed by vascular surgeons in the operating room for lower extremity ischemia due to stenotic lesions. METHODS A total of 14,424 procedures were performed by our division between January 1990--October 2003. Of these, 500 involved a balloon angioplasty. These made up 3.5% of the total caseload. The median age of the patients who underwent these 500 balloon angioplasty was 72+/-0.5 years old; 65% were male; 50% had a history of diabetes mellitus, and 6% had ESRD. Indications for the procedures included acute ischemia (47 cases), critical ischemia (rest pain, gangrene, or ischemic ulcers in 254 cases), failing bypass (64 cases), severe claudication (134 cases), and preoperative for a popliteal artery aneurysm repair. RESULTS 244 of the procedures were percutaneous, and the remaining 256 were combined with some type of open procedure. Those performed as an open technique were in combination with a bypass (135 cases) and in combination with a patch angioplasty (31cases). Balloon angioplasties were performed of the aorta (5 cases), iliac arteries (281 cases), the superficial femoral artery (SFA) (101 cases), the popliteal artery (44 cases), the tibial vessels (77 cases), the subclavian/axillary artery (5 cases) and failing grafts (26 cases). Balloon angioplasty was attempted in eight cases and failed due to inability to cross the lesion with a guidewire. Intraoperative complications included 4 dissections, inability to dilate the lesion adequately (2 cases), and rupture of two iliac lesions that underwent open repair (1 case) or repair with a stent graft (1 case). Stents were initially used highly selectively but recently are now being deployed more liberally in the iliac arteries (total 251 cases with stents). CONCLUSIONS Based on these data, we suggest that balloon angioplasty is a useful tool that can be performed by vascular surgeons safely. The advantages to the patients include one combined procedure to treat lower extremity ischemia.
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Affiliation(s)
- A Hingorani
- Division of Vascular Surgery, Department of Surgery, Maimonides Medical Center, Brooklyn, New York 11219, USA
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Goujon Y, Hou A, Daviaud J, Faye M, Guidon G, Jary B, Magne M, Talavera M, Trezeguet M, Velly J. Environnement chimique et évaluation de l’exposition aux hydrocarbures des mécaniciens automobile. ARCH MAL PROF ENVIRO 2004. [DOI: 10.1016/s1775-8785(04)93059-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Goujon Y, Magne M, Hou A. Abrasion des disques à découper les matériaux : exposition aux particules émises. ARCH MAL PROF ENVIRO 2004. [DOI: 10.1016/s1775-8785(04)93094-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Drmanac R, Drmanac S, Baier J, Chui G, Coleman D, Diaz R, Gietzen D, Hou A, Jin H, Ukrainczyk T, Xu C. DNA sequencing by hybridization with arrays of samples or probes. Methods Mol Biol 2001; 170:173-9. [PMID: 11357681 DOI: 10.1385/1-59259-234-1:173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
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Hou A, Wang Y, Zheng Y. Treatment of lacunar cerebral infarction with Huo Xue Tong Luo Tang. J TRADIT CHIN MED 2001; 21:16-9. [PMID: 11360529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Affiliation(s)
- A Hou
- Institute of Integrated TCM and Western Medicine, Heilongjiang Province 150040
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18
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Hou A, Fukai T, Shimazaki M, Sakagami H, Sun H, Nomura T. Benzophenones and xanthones with isoprenoid groups from Cudrania cochinchinensis. J Nat Prod 2001; 64:65-70. [PMID: 11170668 DOI: 10.1021/np000406p] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Four new benzophenones with two isoprenoid groups, cudraphenones A-D (1-4), and three new xanthones also with two isoprenoid units, cudraxanthones P-R (5-7), were isolated from the roots of Cudraniacochinchinensis, together with 19 known phenolic compounds. The structures of the new compounds were elucidated by spectroscopic methods. Some compounds exhibited weak cytotoxicity against human oral squamous carcinoma cells (HSC-2) and normal human gingival fibroblasts (HGF). Among them, benzophenones 1-4 showed more potent cytotoxic activities against HSC-2 cells than against HGF cells. On the other hand, xanthones bearing isoprenoid groups showed much lower tumor specificity as compared with the benzophenones, except for geronthxanthone H and isoalvaxanthone. The presence of two sets of hydrophobic and hydrophilic groups in separate domains in each molecule might play a role in the mediation of tumor-specific action.
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Affiliation(s)
- A Hou
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
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19
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Hou A, Akiyama H, Nakajima Y, Sudo S, Tsuruta H. Effects of urea form and soil moisture on N2O and NO emissions from Japanese Andosols. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1465-9972(00)00025-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Tatem L, Hou A, Black KS, Llull R, Hewitt CW. Digital image analysis of major histocompatibility complex class I and class II expression during site-specific immune suppression with topical cyclosporine. Transplant Proc 1995; 27:344-5. [PMID: 7879022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- L Tatem
- UMDNJ/Robert Wood Johnson Medical School, Cooper Hospital, Camden
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21
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Woolley DS, Hou A, Strande L, Tatem L, Mathews M, Hewitt CW. Vascularized bone marrow transplantation and graft versus host disease: morphometric analysis of muscle. Transplant Proc 1994; 26:3321-2. [PMID: 7998154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- D S Woolley
- Department of Surgery, UMDNJ/Robert Wood Johnson Medical School at Camden, Cooper Hospital/University Medical Center 08103
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22
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Wyandt HE, Milunsky J, Lerner T, Gusella JF, Hou A, MacDonald M, Adekunle S, Milunsky A. Characterization of a duplication in the terminal band of 4p by molecular cytogenetics. Am J Med Genet 1993; 46:72-6. [PMID: 7684190 DOI: 10.1002/ajmg.1320460112] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
An infant with multiple anomalies including small head, large apparently low-set ears, beaked nose, micrognathia, choanal stenosis, proptosis, atrial-septal defect, and left inguinal hernia was found, on chromosome analysis, to have a longer than normal terminal band 4p16 by G and R-banding. In situ hybridization of biotin-labeled DNA probes C39, BJ14, BJ54, BJ19, BJ7, and BJ11 showed them to be duplicated. Probes I14, A157.1, and the telomeric sequence, (TTAGGG)n, which hybridized to the more distal part of 4p16.3, were not duplicated. These results confirm the impression by G and R-banding of a duplication within band 4p16, a region extending from approximately 2.1 Mb from the telomere, proximally, to the junction of 4p16.1 and 4p15.3. This is the smallest confirmed duplication of distal 4p reported to date, with many of the classical findings of dup(4p) syndrome.
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Affiliation(s)
- H E Wyandt
- Center for Human Genetics, Boston University School of Medicine, MA 02118
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