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Kong JY, Wang TQ, Jiang GH, Li L, Wang FP. Urinary trypsin inhibitor reduced inflammatory response after stent injury in minipig. Pathol Res Pract 2012; 208:344-9. [PMID: 22537506 DOI: 10.1016/j.prp.2012.03.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 03/01/2012] [Accepted: 03/06/2012] [Indexed: 11/28/2022]
Abstract
This study investigated whether urinary trypsin inhibitor (UTI) inhibits neointimal formation by reducing inflammatory response after stent injury. Twenty minipigs having undergone oversized bare material stent implantation in the left anterior descending artery were randomly subdivided into two groups: a UTI group (n=10) and a control group (n=10). Two systemic markers of inflammation (serum macrophage chemoattractant protein-1 and interleukin-6 levels measured by ELISA) were increased after stent implantation, and two days after stem implantation, their levels were positively correlated with the maximal percentage of area stenosis on day 28 (r(2)=0.889 and 0.743, respectively). This effect was abolished by UTI administration. Twenty-eight days after implantation, morphometric analysis of the stented arteries revealed significantly reduced luminal stenosis (38±6% vs. 64±12%, P<0.05), a neointimal area (3.22±0.57 mm(2) vs. 5.21±1.04 mm(2), P<0.05), neointimal thickness (0.31±0.13 mm vs. 0.46±0.16 mm, P<0.05), and an inflammatory score of 1.02±0.05 vs. 1.30±0.08 in UTI-treated animals as compared with controls. Twenty-eight days after stenting, arterial nuclear factor-κB expression was 36.93±7.16% in all of the cells in controls and 23.32±4.54% in UTI-treated minipigs. UTI could reduce neointimal formation after stenting by inhibiting the local and the systemic inflammatory response. Percutaneous coronary intervention could benefit from precocious anti-inflammatory treatment.
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Li DH, Cai SX, Zhu TJ, Wang FP, Xiao X, Gu QQ. New Cytotoxic Metabolites from a Deep-Sea-Derived Fungus, Phialocephala sp., Strain FL30r. Chem Biodivers 2011; 8:895-901. [DOI: 10.1002/cbdv.201000134] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Li DH, Cai SX, Zhu TJ, Wang FP, Xiao X, Gu QQ. New Cytotoxic Metabolites from a Deep-Sea-Derived Fungus, Phialocephala sp., Strain FL30r. Chem Biodivers 2011. [DOI: 10.1002/cbdv.201000134 pmid: 21560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Xie XS, Liu HC, Wang FP, Zhang CL, Zuo C, Deng Y, Fan JM. Ginsenoside Rg1 modulation on thrombospondin-1 and vascular endothelial growth factor expression in early renal fibrogenesis in unilateral obstruction. Phytother Res 2010; 24:1581-7. [DOI: 10.1002/ptr.3190] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Liu C, Wang L, Xie XS, Xie LS, Li FY, Wang FP, Zhang L, Zhang HP, Fan JM. [Leukemia inhibitory factor suppresses renal interstitial fibroblast activation induced by transforming growth factor]. SICHUAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF SICHUAN UNIVERSITY. MEDICAL SCIENCE EDITION 2010; 41:448-452. [PMID: 20629319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
OBJECTIVE To investigate the effects of leukemia inhibitory factor (LIF) on renal interstitial fibroblast activation following induction by transforming growth factor beta 1 (TGF-beta1). METHODS Normal rat interstitial fibroblast cells (NRK/49F) were treated with TGF-beta1 and TGF-beta1, combining with LIF respectively for different duration with different concentration. Changes in cell morphology and expression of alpha-SMA were evaluated with electronic microscope and Western blot respectively. The collagen I in the supernatant was detected with ABC-ELISA. RESULTS TGF-beta1 induced renal interstitial fibroblast activation, and this was accompanied by significant morphological transformations and secretion of collagen I. Co-culturing of cells with LIF blocked the morphological transformation. In addition, LIF inhibited TGF-beta1-induced expression of alpha-SMA mRNA and protein (P < 0.01), and decreased the levels of collagen I (P < 0.01) in a dose-dependent manner. CONCLUSION LIF suppresses TGF-beta1-induced activation and collagen I secretion of cultured renal interstitial fibroblasts.
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Cai SX, Li DH, Zhu TJ, Wang FP, Xiao X, Gu QQ. Two New Indole Alkaloids from the Marine-Derived BacteriumAeromonassp. CB101. Helv Chim Acta 2010. [DOI: 10.1002/hlca.200900360] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Liu SS, Wei QN, Feng WW, Zhan K, Wang FP. [A method for resolving spectra shift in the urban air quality monitoring system (DOAS)]. GUANG PU XUE YU GUANG PU FEN XI = GUANG PU 2009; 29:1450-1453. [PMID: 19810506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In the urban air quality monitoring system, there is spectra shift which is caused by environment factors on the optical part (temperature and optic fiber position), or by the self-change of Xe-lamp. Relative spectra shift will occur if the shift of lamp-spectrum and air-spectrum is inconsistent which has direct influences on the accuracy of the measurement results. So the match of wavelength between lamp-spectrum and air-spectrum should be considered when we retrieve pollutants concentration measurement of trace gas in the atmosphere through DOAS method. Based on the study of the unique structures for Xe-lamp emitting spectrum, a method for the calibration of two signal spectra using Xe-lamp emitting peak and least square fitting is given. The results show that, the impact of spectrum shift can be reduced by this method for retrieving results.
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Long YY, Hu LF, Jiang CJ, Fang CR, Wang FP, Shen DS. Releasing behavior of copper in recirculated bioreactor landfill. BIORESOURCE TECHNOLOGY 2009; 100:2419-2424. [PMID: 19119001 DOI: 10.1016/j.biortech.2008.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2008] [Revised: 11/09/2008] [Accepted: 11/11/2008] [Indexed: 05/27/2023]
Abstract
The purpose of this study was to determine the releasing behavior of copper in municipal solid waste (MSW) in landfill with respect to refuse and leachate as an inseparable system. Two simulated bioreactor landfills, one with leachate recirculation and the other without, were operated in room temperature for 320 days. Copper in refuse showed behaviors of staggered migration and retention, which corresponded with the degradation process of landfill obviously. The significant different amounts of Cu2+ leached out from refuse into leachate of two landfills were 24.74 mg and 118.53 mg after 320 days' operation, respectively. It also reflected the releasing behavior of copper in landfill refuse at different stage accordingly. The results confirmed that the refuse in landfill had high potential of secondary pollution after closure.
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Chen GY, Somesfalean G, Zhang ZG, Sun Q, Wang FP. Ultraviolet upconversion fluorescence in rare-earth-ion-doped Y2O3 induced by infrared diode laser excitation. OPTICS LETTERS 2007; 32:87-9. [PMID: 17167593 DOI: 10.1364/ol.32.000087] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Room-temperature ultraviolet emission of Tm(3+) ions at 298 ((1)I(6)-->(3)H(6)), 364 ((1)D(2)-->(3)H(6)), and 391 nm ((1)I(6)-->(3)H(5)) was obtained in Y(2)O(3):Yb(3+)-Tm(3+) by continuous-wave diode laser excitation of 980 nm. Power dependence analysis demonstrates that five- and six-photon upconversion processes populate the (1)D(2) and (1)I(6) states, respectively. We believe that the (1)D(2) population originates from the cross relaxation (1)G(4)+(3)F(4)-->(3)H(4)+(1)D(2) of the Tm(3+) ions, while subsequent energy transfer from Yb(3+) to Tm(3+) excites the (1)D(2) state to the upper (1)I(6) state. High multiphoton-induced ultraviolet emission is also expected for other trivalent rare-earth ions similar to Tm(3+).
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Wang FP, Li Q, Zhou Y, Li MG, Xiao X. The C-terminal module of Chi1 fromAeromonas caviae CB101 has a function in substrate binding and hydrolysis. Proteins 2003; 53:908-16. [PMID: 14635132 DOI: 10.1002/prot.10501] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The chitinase gene chi1 of Aeromonas caviae CB101 encodes an 865-amino-acid protein (with signal peptide) composed of four domains named from the N-terminal as an all-beta-sheet domain ChiN, a triosephosphate isomerase (TIM) catalytic domain, a function-unknown A region, and a putative chitin-binding domain (ChBD) composed of two repeated sequences. The N-terminal 563-amino-acid segment of Chi1 (Chi1DeltaADeltaChBD) shares 74% identity with ChiA of Serratia marcescens. By the homology modeling method, the three-dimensional (3D) structure of Chi1DeltaADeltaChBD was constructed. It fit the structure of ChiA very well. To understand fully the function of the C-terminal module of Chi1 (from 564 to 865 amino acids), two different C-terminal truncates, Chi1DeltaChBD and Chi1DeltaADeltaChBD, were constructed, based on polymerase chain reaction (PCR). Comparison studies of the substrate binding, hydrolysis capacity, and specificity among Chi1 and its two truncates showed that the C-terminal putative ChBD contributed to the insoluble substrate-protein binding and hydrolysis; the A region did not have any function in the insoluble substrate-protein binding, but it did have a role in the chitin hydrolysis: Deletion of the A region caused the enzyme to lose 30-40% of its activity toward amorphous colloidal chitin and soluble chitin, and around 50% toward p-nitrophenyl (pNP)-chitobiose pNP-chitotriose, and its activity toward low-molecular-weight chitooligomers (GlcNAc)3-6 also dropped, as shown by analysis of its digestion processes. This is the first clear demonstration that a domain or segment without a function in insoluble substrate-chitinase binding has a role in the digestion of a broad range of chitin substrates, including low-molecular-weight chitin oligomers. The reaction mode of Chi1 is also described and discussed.
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Xiao X, Wang FP, Schrempf H. [Purification and kinetic parameters of a Streptomyces olivaceoviridis protein which binds N-acetylglucosamine and chitin oligomers]. SHENG WU HUA XUE YU SHENG WU WU LI XUE BAO ACTA BIOCHIMICA ET BIOPHYSICA SINICA 2002; 34:253-7. [PMID: 12523352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
A specific substrate binding protein is located within the membrane of Streptomyces olivaceoviridis mycelia. After Triton extraction of the membrane, two forms of the protein (46.0 kD and 47.5 kD) were purified to apparent homogeneity by consecutive anionic exchange chromatographies. The results of competition interacted with N-acetylglucosamine and chitin oligomers (C2 to C6), but not with cellobiose nor glucose. Using surface plasmon resonance, the kinetic parameters of the 46 kD form of the binding protein were determined. This protein showed a very high affinity for N-acetylglucosamine (K(d) = 8.29 x 10(-9) mol/L) and for chitobiose (K(d) = 3.81 X 10(-6) mol/L), and the lowest one was for chitotriose (K(d) = 1.95 X 10(-5) mol/L). Comparisons of the dissociation and association rate constants indicated that the interaction of this protein with each ligand was controlled by the association rate. N terminal sequence indicated that this protein might belong to an ABC transporter system.
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Liu N, Shan Y, Wang FP, Xu CG, Peng KM, Li XH, Zhang Q. Identification of an 85-kb DNA fragment containing pms1, a locus for photoperiod-sensitive genic male sterility in rice. Mol Genet Genomics 2001; 266:271-5. [PMID: 11683269 DOI: 10.1007/s004380100553] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Photoperiod-sensitive genic male-sterile rice has a number of desirable characteristics for hybrid rice production. Previous studies identified pms1, located on chromosome 7, as a major locus for photoperiod-sensitive genic male sterility. The objective of this study was to localize the pms1 locus to a specific DNA fragment by genetic and physical mapping. Using 240 highly sterile individuals and a random sample of 599 individuals from an F2 population of over 5000 individuals from a cross between Minghui 63 and 32001S, we localized the pms1 locus by molecular marker analysis to a genetic interval of about 4 cM, 0.25 cM from RG477 on one side and 3.8 cM from R1807 on the other side. A contig map composed of seven BAC clones spanning approximate 500 kb in length was constructed for the pms1 region by screening a BAC library of Minghui 63 DNA using RFLP markers and chromosomal walking. Analysis of recombination events in the pms1 region among the highly sterile individuals reduced the length of the contig map to three BAC clones. Sequencing of one BAC clone, 2109, identified two SSR markers located 85 kb apart in the clone that flanked the pms1 locus on both sides, as indicated by the distribution of recombination events. We thus concluded that the pms1 locus was located on the fragment bounded by the two SSR markers.
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Wang FP, Chen QH, Li ZB, Li BG. Novel products from oxidation of the norditerpenoid alkaloid pseudaconine with HIO4. Chem Pharm Bull (Tokyo) 2001; 49:689-94. [PMID: 11411517 DOI: 10.1248/cpb.49.689] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Oxidation of pseudaconine 8, a norditerpenoid alkaloid, with HIO4 led to a series of novel interesting products, depending greatly on reaction medium and work-up conditions. Treatment of 8 in MeOH-H2O (1:1) with NaIO4 gave compounds 10 and 11, but compound 12 was obtained quantitatively when the final reaction solution was alkalized with conc. NH4OH. The imine 12 was also obtained in 100% yield by treating 8 in 5% HCl solution with NaIO4 followed by alkalizing the reaction products to pH>9 with conc. NH4OH. When the work up pH was 7-8, only N,O-mixed acetal-ketal 13 was formed in 96% yield, which was converted quantitatively to 12 by further alkalizing. When the reaction mixture was alkalized to pH 7-8 with Na2CO3, a hemiacetalketal 14 was afforded quantitatively, which was converted to 15 in 87% yield by further treatment with Na2CO3 or 5% NaOH methanol. Compound 15 could be converted back to 14 by treatment with 10% HCl solution. Acetylation of the imine 12 gave the compounds 16 and 17 in 15% and 19% yields, respectively. All of the new compounds were isolated and fully characterized.
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Shi YQ, Fukai T, Sakagami H, Chang WJ, Yang PQ, Wang FP, Nomura T. Cytotoxic flavonoids with isoprenoid groups from Morus mongolica. JOURNAL OF NATURAL PRODUCTS 2001; 64:181-188. [PMID: 11429996 DOI: 10.1021/np000317c] [Citation(s) in RCA: 122] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new pyranoflavanone, sanggenol L (1), a Diels-Alder type adduct regarded as a cycloaddition product of a dehydrogeranylflavanone and a prenylchalcone, sanggenol M (2), along with four new 2-arylbenzofurans with isoprenoid units, mulberrofurans W-Z (3-6), were isolated together with 10 known flavonoids from Chinese Morus mongolica. The structures of these novel compounds were elucidated by spectroscopic methods. All flavanones investigated here showed higher cytotoxicity against human oral tumor cell lines (HSC-2 and HSG) than against normal human gingival fibroblasts (HGF). Among them, the cytotoxicity of compound 2 and the Diels-Alder type flavanone sanggenon C (7) isolated from Morus cathayana were the most potent. On the other hand, seven 2-arylbenzofurans exhibited lower cytotoxicity and tumor specificity as compared with flavanones.
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Peng CS, Jian XX, Wang FP. Diterpenoid alkaloids from Aconitum racemulosum Franch var. pengzhouense. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2001; 3:49-54. [PMID: 11355770 DOI: 10.1080/10286020108042838] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new diterpenoid alkaloid, racemulotine (1), was isolated from the whole plants of Aconitum racemulosum Franch var. pengzhouense, and its structure was elucidated by 1D- and 2D-NMR spectra.
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Li ZB, Xu L, Jian XX, Wang FP. New norditerpenoid alkaloids from the roots of Aconitum geniculatum. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2001; 3:131-137. [PMID: 11407812 DOI: 10.1080/10286020108041380] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Four new norditerpenoid alkaloids, geniculatines A (1), B (4), C (7) and D (8), were isolated from the roots of Aconitum geniculatum Fletcher, and their structures were elucidated by spectral methods.
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Wang FP, Peng CS, Jian XX, Chen DL. Five new norditerpenoid alkaloids from Aconitum sinomontanum. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2001; 3:15-22. [PMID: 11355766 DOI: 10.1080/10286020108042834] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
From the roots of Aconitum sinomontanum, five new norditerpenoid alkaloids, sinomontanitines A (1) and B (2), sinomontanines A (3), B (4) and C (5), were isolated together with the known alkaloids lappaconitine (6) and ranaconitine (7), The structures of the new alkaloids were determined by spectral analysis.
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Peng CS, Wang FP. [Advances in chemistry of norditerpenoid alkaloids]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 2000; 35:932-8. [PMID: 12567919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
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Wang FP, Yang JS, Chen QH, Yu L, Li BG. New access to 7,17-seco norditerpenoid alkaloids via reduction of the corresponding 8-chloro derivatives. Chem Pharm Bull (Tokyo) 2000; 48:1912-6. [PMID: 11145143 DOI: 10.1248/cpb.48.1912] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
New access to the 7, 17-seco norditerpenoid alkaloids 9 (60%) from yunnaconitine (5), as well as 14 (46%) and 15 (22%) from isotalatizidine (10), via selective hydrolysis, chlorination and reduction with NaBH4 is described.
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Peng CS, Wang FP, Jian XX. New norditerpenoid alkaloids from Aconitum hemsley anum var. pengzhouense. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2000; 2:245-249. [PMID: 11249605 DOI: 10.1080/10286020008041362] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two new norditerpenoid alkaloids, 13-deoxyludaconitine (1) and 8-deacetylsungpaconitine (3), were isolated from the roots of Aconitum hemsleyanum Pritz var. pengzhouense and their structures were elucidated by spectral data.
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Wang FP, Li ZB, Che CT. Beiwudine, a norditerpenoid alkaloid from aconitum kusnezoffii. JOURNAL OF NATURAL PRODUCTS 1998; 61:1555-1556. [PMID: 9868164 DOI: 10.1021/np960481t] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A novel norditerpenoid alkaloid, beiwudine (1), was isolated from the roots of Aconitum kusnezoffii. Its structure was established on the basis of chemical and NMR spectral studies.
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Li ZB, Wang FP. Two new diterpenoid alkaloids, beiwusines A and B, from Aconitum kusnezoffii. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 1998; 1:87-92. [PMID: 11261218 DOI: 10.1080/10286029808039848] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two new atisine-type diterpenoid alkaloids, beiwusine A (1) and B (2), have been isolated from the roots of Aconitum kusnezoffii Reichb. Their structures were established on the basis of spectroscopic data. Beiwusines A and B are the first examples of atisine-type diterpenoid alkaloids having a hydroxyl group at C-1. In addition, one known diterpenoid alkaloid spiramine H (3) has been isolated.
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Lu GH, Wang FP, Pezzuto JM, Tam TC, Williams ID, Che CT. 10-Epi-olguine from Rabdosia ternifolia. JOURNAL OF NATURAL PRODUCTS 1997; 60:425-427. [PMID: 9182128 DOI: 10.1021/np960689e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
An unsaturated lactone, 10-epi-olguine (1), has been isolated from Rabdosia ternifolia (D. Don) Hara. The structure was established by spectroscopic and X-ray crystallographic analyses. The compound displayed modest cytotoxicity in several human cancer cell lines.
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Liu Y, Wang FP. [Impact on the development of extrinsic asthma caused by dust mites exposure, and its sensitization in Jiangsu]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 1996; 17:157-9. [PMID: 9208514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
To obtain information on the relationship between dust mites exposure, dust mite sensitization, and the development of extrinsic asthma in Jiangsu province between 1992-1993, a case-control study was carried out. Unconditional logistic regression method was conducted. The results showed that the history of allergy in parents, dust mites exposure, dust mite sensitization, and birth in months with high mite densities were factors which played important roles in the development of extrinsic asthma. The population attributable rate of dust mites exposure was 70.29%. Based on the results, some practical preventive measures were put forward.
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Benari B, Kiat H, Erel J, Hyun M, Wang FP, Williams C, Friedman JD, Germano G, Van Train KF, Berman D. Repeatability of treadmill exercise ejection fraction and wall motion using technetium 99m-labeled sestamibi first-pass radionuclide ventriculography. J Nucl Cardiol 1995; 2:478-84. [PMID: 9420829 DOI: 10.1016/s1071-3581(05)80039-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Peak treadmill exercise radionuclide ventriculography (RVG) with technetium 99m has recently been validated for determination of left ventricular ejection fraction (LVEF). However, the repeatability of this technique for determination of both LVEF and regional wall motion has not been reported. METHODS AND RESULTS Each of 27 clinically stable patients underwent two treadmill exercise RVG studies within 40 +/- 51 days. The level of exercise achieved in the two tests was similar (double product: 26,357 +/- 3877 vs 26,621 +/- 4287), and there was no change in clinical or treatment status between the studies. Acquisition and processing were accomplished with a mobile multicrystal camera and a new version of a commercial software (Scinticor SIM 400 V. 4.1 BETA, Milwaukee, Wis.) that uses two left ventricular regions of interest. The two tests were compared to assess agreement (repeatability) on both an automatically calculated LVEF and wall motion in five left ventricular segments (basal anterior, distal anterior, apical, distal inferior, and basal inferior), with a 3-point semiquantitative visual score. Intraobserver and interobserver agreements (reproducibility) also were assessed on quantitative exercise LVEF derived from the same RVG test from a separate group of 20 patients with a broad range of exercise LVEF. The first and second treadmill exercise LVEFs were highly correlated (r = 0.92, SEE = 3.96, y = 0.97x + 0.58; and r = 0.99, SEE = 1.32, y = 0.99x + 0.25, respectively). Results of segmental visual score agreement between the first and the second treadmill first-pass studies were as follows: overall, 86% (116/135, kappa = 0.74); basal anterior, 85% (23/27, kappa = 0.72); distal anterior, 85% (23/27, kappa = 0.84); apical, 93% (25/27, kappa = 0.85); distal inferior, 93% (25/27, kappa = 0.80); and basal inferior, 67% (18/27, kappa = 0.64). CONCLUSION Treadmill exercise first-pass RVG is a highly repeatable and reproducible test for quantitative LVEF and visual regional wall motion analysis. Our results imply the procedure may be useful for serial follow-up of patients with coronary artery disease and for the evaluation of the efficacy of medical or interventional treatment.
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