bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of recanalization of chronic total occlusions on global and regional left ventricular function in patients with or without previous myocardial infarction
Authors: Chung Chang‐Min , Nakamura Shigeru , Tanaka Koji , Tanigawa Jun , Kitano Katsuya , Akiyama Tatsurou , Matoba Yoshiki , Katoh Osamu 
Published: October 2003

AbstractPrevious studies have demonstrated improvement of regional wall motion and global left ventricular function after successful recanalization of chronic total occlusion in coronary artery. However, the difference of benefits of recanalization between infarct site and noninfarct site is unknown. This study assessed the changes in left ventricular ejection fraction, regional wall motion after successful angioplasty of chronic total occlusions with or without previous myocardial infarction. This study also evaluated the factors that influenced the outcome of left ventricular function. We retrospectively studied 75 patients with a successfully recanalized chronic total occlusion in native coronary artery. Left ventriculograms were obtained at baseline and after 6 months. Global and regional left ventricular function were determined. The patients were divided into two groups. Group 1 comprised patients without previous myocardial infarction in the territories of total occlusion vessel that was recanalized. Group 2 comprised patients with previous myocardial infarction in the territories of total occlusion vessel that was recanalized. Left ventricular ejection fraction increased from 53.2% ± 16.3% at baseline to 57.3% ± 20.1% at 6‐month follow‐up in the whole group (P = 0.001). In group 1 patients, the evolution of left ventricular (LV) ejection fraction increased from 59.5% ± 13.7% to 67.3% ± 14.6% (P < 0.001). In group 2 patients, the evolution of LV ejection fraction increased, but not significantly, from 48.9% ± 16.2% to 50.5% ± 16.9% (P = NS). The evolution of LV ejection fraction increased from 47.6% ± 17.4% to 50.8% ± 17.5% (P < 0.05) in the subgroup of recanalization in infarct‐related vessel that had rich collateral circulation and had long‐term patency. The regional wall motion all significantly improved in group 1 patients (P < 0.05). The regional wall motion did not change in group 2 patients (P = NS). The influence of recanalization of chronic coronary occlusions on the improvement of left ventricular global function was different between myocardial infarction and nonmyocardial infarction patients. The left ventricular function did not improve in myocardial infarction patient. Regional wall motion improved in patients without previous myocardial infarction. For reliable improvement of left ventricular function after recanalization of chronic total occlusions, evidence (not only by symptom or treadmill test) of viable myocardium in recanalized vessel is important. It is also important to keep patency of infarct‐related vessel that has good collateral circulation for improving the left ventricular function. Catheter Cardiovasc Interv 2003;60:368–374. © 2003 Wiley‐Liss, Inc.
New catheter design for cannulation of the anomalous right coronary artery arising from the left sinus of valsalva
Authors: Qayyum Usman , Leya Fred , Steen Lowell , Sochanski Miroslaw , Grassman Eric , Cho Leslie , Lewis Bruce 
Published: October 2003

AbstractCannulation of an anomalous right coronary artery during coronary angiography and percutaneous intervention poses significant technical difficulties using currently available catheter shapes. We describe a new catheter design and the cannulation technique for application of this catheter. The initial experience with this catheter in cases is reported. Catheter Cardiovasc Interv 2003;60:382–388. © 2003 Wiley‐Liss, Inc.
Simultaneous stenting of the carotid artery and other coronary or extracoronary arteries: Does a combined procedure increase the risk of interventional therapy?
Authors: Hofmann Robert , Kerschner Klaus , Kypta Alexander , Steinwender Clemens , Bibl Dietmar , Leisch Franz 
Published: October 2003

AbstractSimultaneous interventions in carotid and other extracarotid arteries are not performed on a routine basis up to now. In 67 out of 295 consecutive patients (23%) undergoing elective stenting of the internal carotid artery, additional interventions in the coronary arteries (n = 65), the iliac artery (n = 3), renal artery (n = 1), left subclavian artery (n = 3), vertebral artery (n = 4), or a combination thereof were performed. Primary stenting was done in 51 (74%) out of 69 carotid arteries, in 48 (74%) of 65 coronary arteries, and in 10 (91%) of 11 other targeted vessels. Neurological complications consisted of two (2.9%) transient ischemic attacks and one (1.5%) minor stroke. In addition, one (1.5%) myocardial infarction occurred during coronary artery intervention. In comparison, 16 (6.6%) transient ischemic attacks, 1 minor stroke (0.4%), 5 (2.2%) major strokes, and 3 (1.2%) deaths were observed in 228 patients without combined procedures. Simultaneous percutaneous interventions including carotid arteries and other extracarotid arteries are feasible, relatively safe, and cost‐effective.Catheter Cardiovasc Interv 2003;60:314–319. © 2003 Wiley‐Liss, Inc.
Silicon carbide‐coated stents in patients with acute coronary syndrome
Authors: Hamm Christian W. , Hugenholtz Paul G. 
Published: October 2003

AbstractSilicon carbide (aSIC‐C) is a stent coating with antithrombogenic as well as anti‐inflammatory properties as compared with uncoated stainless steal based on in vitro and in vivo studies. This study investigated the potential of this coating in patients with unstable angina. At 38 study sites, 485 patients were randomized to an aSIC‐C (n = 238) or a conventional stainless steal stent (n = 247). Patient were classified according to angina at rest within last 48 hr to Braunwald in class IIB (= 314) and IIIB (n = 171). The primary endpoint was a combination of death, myocardial infarction, or ischemia‐driven target vessel revascularization at 6 months. Complications of procedures performed at 0.4 ± 1.1 days after admission occurred at lower rates than previously reported in this high‐risk population, but the primary endpoint was not different between the study groups. Only in Braunwald class IIIB patients did the primary endpoint occur less frequently in patients with an aSIC‐C stent as compared to patients with a conventional stent (5.8% vs. 15.3%; P = 0.049). At 9‐month follow‐up, the level of difference was maintained, but statistical significance was lost. Quantitative angiography revealed no significant difference between the stents in the subgroups. This study suggests that aSIC‐C stents exert clinically measurable effects in patients with unstable angina with recent symptoms at rest. This coating deserves further clinical investigation and may serve as platform for antiproliferative drugs. Catheter Cardiovasc Interv 2003;60:375–381. © 2003 Wiley‐Liss, Inc.
Percutaneous intervention of spontaneous renal artery dissection complicated with renal infarction: A case report and literature review
Authors: Lee Sang Hak , Lee Han Cheol , Oh Sung Jin , Park Min Chan , Park Kyeong Jin , Moon Yong Sun , Min Ja Won , Hwang Eun Ju , Baek Jeong Eun , Jo Eun Sun , Jang Gil Jin 
Published: October 2003

AbstractSpontaneous renal artery dissection (SRAD) is a rare condition that occurs before renal infarction. Using percutaneous intervention to treat SRAD remains controversial because it is not clear whether it is feasible or effective. We describe a 48‐year‐old male patient with SRAD complicated with renal infarction who was successfully treated with percutnaeous angioplasty and renal artery stenting. Catheter Cardiovasc Interv 2003;60:335–338. © 2003 Wiley‐Liss, Inc.
Myocardial perfusion during transient slow‐flow in the patient with old vein graft intervention: Assessment by serial measurement of pressure‐derived fractional flow reserve and thermodilution‐derived coronary flow reserve
Authors: Matsuo Hitoshi , Watanabe Sachiro , Yasuda Shinji , Hirose Takeshi , Iwama Makoto , Tanaka Shinichiro , Yamaki Takahiko , Ono Kouji , Takahashi Haruki , Segawa Tomonori , Matsuno Yukihiko , Minatoguchi Shinya , Fujiwara Hisayoshi 
Published: October 2003

AbstractA patient with distal slow‐flow after stenting in the old vein graft intervention was reported. This case is a first in whom guidewire‐based serial measurement of pressure‐derived fractional flow reserve (FFRmyo) and thermodilution‐based coronary flow reserve (CFRthermo) clearly demonstrated the serial change of microvascular circulation. During slow‐flow, CFRthermo remained in low value despite significant improvement of FFRmyo from 0.61 to 0.90. After thrombus aspiration and nicorandil injection, coronary flow reestablished immediately. CFRthermo improved significantly from 1.3 during slow‐flow to 3.6 after restoration of flow. Catheter Cardiovasc Interv 2003;60:392–398. © 2003 Wiley‐Liss, Inc.
Percutaneous mitral valve repair: A feasibility study in an ovine model of acute ischemic mitral regurgitation
Authors: Liddicoat John R. , Mac Neill Briain D. , Gillinov A. Marc , Cohn William E. , Chin Chi‐Hui , Prado Aldo D. , Pandian Natesa G. , Oesterle Stephen N. 
Published: October 2003

AbstractAnnuloplasty is the cornerstone of surgical mitral valve repair. A percutaneous transvenous catheter‐based approach for mitral valve repair was tested by placing a novel annuloplasty device in the coronary sinus of sheep with acute ischemic mitral regurgitation. Mitral regurgitation was reduced from 3–4+ to 0–1+ in all animals (P < 0.03). The annuloplasty functioned by reducing septal‐lateral mitral annular diameter (30 ± 2.1 mm preinsertion vs. 24 ± 1.7 mm postinsertion; P < 0.03). These preliminary experiments demonstrate that percutaneous mitral annuloplasty is feasible. Further study is necessary to demonstrate long‐term safety and efficacy of this novel approach. Catheter Cardiovasc Interv 2003;60:410–416.© 2003 Wiley‐Liss, Inc.
Forschungs‐ und Handlungsperspektiven für die Chemiedidaktik am Beginn des 21. Jahrhunderts. Ein Beitrag zur Diskussion über das Selbstverständnis der Chemiedidaktik als wissenschaftliche Disziplin.
Authors: Eilks Ingo , Ralle Bernd 
Published: October 2003

AbstractIM BEITRAG werden ausgehend von der internationalen Diskussion über die naturwissenschaftliche Fachdidaktik die aktuelle Situation und die Perspektiven der Chemiedidaktik in Deutschland beleuchtet. Es wird dargestellt, dass eine intensivere Auseinandersetzung mit der Frage nach dem Selbstverständnis der Chemiedidaktik als forschungsbasierte wissenschaftliche Disziplin notwendig ist. Hierbei werden auch Gedanken aus der Tradition der Aktionsforschung einfließen.
2003 — das Jahr der Chemie: im Rückblick mit Einblick zum Ausblick
Authors: Reiners Christiane S. 
Published: October 2003

AbstractDIE CHEMIEORGANISATIONEN in Deutschland begehen gemeinsam mit dem Bundesministerium für Bildung und Forschung (BMBF) das Jahr 2003 als Jahr der Chemie, in dem sich der Geburtstag des deutschen Chemikers, Justus von Liebig, zum 200sten Mal jährt. Mit dem Jahr der Chemie wird die Tradition der vorangegangenen themenbezogenen Jahre (2000: Jahr der Physik, 2001 Jahr der Lebenswissenschaften, 2002: Jahr der Geowissenschaften) fortgesetzt. Ziel der Veranstaltungen ist es, den Dialog zwischen Wissenschaften und interessierter Öffentlichkeit zu fördern.In einem geschichtlichen Rückblick auf die Naturwissenschaft Chemie soll zunächst ergründet werden, warum ausgerechnet die Geburtsdaten des Justus von Liebig Anlass gaben, das Jahr 2003 zum Jahr der Chemie zu krönen. Auf der Grundlage eines didaktisch aufbereiteten Einblicks in das Leben und Werk des Wissenschaftlers von Liebig soll die Entscheidung kritisch reflektiert werden. Und schließlich möchte der Artikel einen Ausblick auf die Ziele der Aktivitäten geben, die von den mit der Chemie verbundenen Instituten der Universität zu Köln zum Jahr der Chemie geplant wurden.
CLIC4 is enriched at cell‐cell junctions and colocalizes with AKAP350 at the centrosome and midbody of cultured mammalian cells
Authors: Berryman Mark A. , Goldenring James R. 
Published: October 2003

AbstractCLIC4 is a member of the chloride intracellular channel (CLIC) protein family whose principal cellular functions are poorly understood. Recently, we demonstrated that several CLIC proteins, including CLIC4, interact with AKAP350. AKAP350 is concentrated at the Golgi apparatus, centrosome, and midbody and acts as a scaffolding protein for several protein kinases and phosphatases. In this report, we show that endogenous CLIC4 and AKAP350 colocalize at the centrosome and midbody of cultured cells by immunofluorescence microscopy. Unlike AKAP350, CLIC4 is not enriched in the Golgi apparatus but is enriched in mitochondria, actin‐based structures at the cell cortex, and the nuclear matrix, indicating that CLIC4‐AKAP350 interactions are regulated at specific subcellular sites in vivo. In addition to the centrosome and midbody, CLIC4 colocalizes with AKAP350 and the tight junction protein ZO‐1 in the apical region of polarized epithelial cells, suggesting that CLIC4 may play a role in maintaining apical‐basolateral membrane polarity during mitosis and cytokinesis. Biochemical studies show that CLIC4 behaves mainly as a soluble cytosolic protein and can associate with proteins of the microtubule cytoskeleton. The localization of CLIC4 to the cortical actin cytoskeleton and its association with AKAP350 at the centrosome and midbody suggests that CLIC4 may be important for regulating cytoskeletal organization during the cell cycle. These findings lead to the conclusion that CLIC4 and possibly other CLIC proteins have alternate cellular functions that are distinct from their proposed roles as chloride channels. Cell Motil. Cytoskeleton 56:159–172, 2003. © 2003 Wiley‐Liss, Inc.
Flattening Drosophila cells for high‐resolution light microscopic studies of mitosis in vitro
Authors: Fleming Shawna L. , Rieder Conly L. 
Published: October 2003

AbstractHere we briefly review techniques used to flatten cells that otherwise round in culture, so that their division can be more clearly analyzed in vitro by high resolution light microscopy. We then describe an agar overlay procedure for use with isolated Drosophila neuroblasts, which promotes their long‐term viability while also allowing for correlative studies of the same cell in the living and fixed state. This same procedure can also be used to obtain high temporal and spatial resolution images of mitosis and cytokinesis in cultured Drosophila Schneider S2 cells, which are a popular model for RNAi studies. Cell Motil. Cytoskeleton 56:141–146, 2003. © 2003 Wiley‐Liss, Inc.
Structure of kinetochore fibres in crane‐fly spermatocytes after irradiation with an ultraviolet microbeam: Neither microtubules nor actin filaments remain in the irradiated region
Authors: Forer Arthur , Spurck Tim , Pickett‐Heaps Jeremy D. , Wilson Paula J. 
Published: October 2003

AbstractWe studied chromosome movement after kinetochore microtubules were severed. Severing a kinetochore fibre in living crane‐fly spermatocytes with an ultraviolet microbeam creates a kinetochore stub, a birefringent remnant of the spindle fibre connected to the kinetochore and extending only to the edge of the irradiated region. After the irradiation, anaphase chromosomes either move poleward led by their stubs or temporarily stop moving. We examined actin and/or microtubules in irradiated cells by means of confocal fluorescence microscopy or serial‐section reconstructions from electron microscopy. For each cell thus examined, chromosome movement had been recorded continuously until the moment of fixation. Kinetochore microtubules were completely severed by the ultraviolet microbeam in cells in which chromosomes continued to move poleward after the irradiation: none were seen in the irradiated regions. Similarly, actin filaments normally present in kinetochore fibres were severed by the ultraviolet microbeam irradiations: the irradiated regions contained no actin filaments and only local spots of non‐filamentous actin. There was no difference in irradiated regions when the associated chromosomes continued to move versus when they stopped moving. Thus, one cannot explain motion with severed kinetochore microtubules in terms of either microtubules or actin‐filaments bridging the irradiated region. The data seem to negate current models for anaphase chromosome movement and support a model in which poleward chromosome movement results from forces generated within the spindle matrix that propel kinetochore fibres or kinetochore stubs poleward. Cell Motil. Cytoskeleton 56:173–192, 2003. © 2003 Wiley‐Liss, Inc.
Color rendering: Asking the question
Authors: Worthey James A. 
Published: October 2003

AbstractTwo white lights may have the same chromaticity, and yet when used to light an array of objects may differ in their ability to reveal colors. For example, any white light can be matched by a mixture of two narrow‐band lights, a yellow plus a blue. In this extreme case, reds and greens become black or brown and the red‐green dimension is lost. At the other extreme, a light with three narrow bands, at the proper wavelengths, can brighten reds and greens and increase red‐green contrast, relative to a broad‐band light such as daylight. Many commercial lights tend to dull reds and greens, relative to broad‐band sources, a central reason that color rendering is a practical concern. A telling example is neodymium glass, a yellow‐absorbing filter that is sometimes used to improve color rendering. This article seeks to bring these ideas to life through detailed graphical examples. © 2003 Wiley Periodicals, Inc. Col Res Appl, 28, 403–412, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/col.10193
Changes in hue and saturation of chromatic lights presented in the peripheral visual field
Authors: Ayama Miyoshi , Sakurai Masato 
Published: October 2003

AbstractThe perception of ten different colors on a CRT display presented across the horizontal meridian of the visual field were measured to determine the range of relevant test stimuli for color zone map measurement. Hue and saturation judgments were used based on the opponent‐colors theory. The changes of the unique hue components for eccentric displays of red, yellow, green, and blue fall within the distribution range of previous results obtained using monochromatic lights. Chromatic displays of nearly unique hues with high saturation would be significant as test colors for measurement for a color zone map. © 2003 Wiley Periodicals, Inc. Col Res Appl, 28, 413–424, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/col.10194
Applying chromatic adaptation transforms to mixed adaptation conditions
Authors: Sueeprasan Suchitra , Luo M. Ronnier 
Published: October 2003

AbstractA set of psychophysical experiments was conducted to investigate the state of adaptation between hardcopy and softcopy images when viewed under mixed illumination conditions. The performance of three chromatic adaptation transforms, CMCCAT97, CMCCAT2000 and CIECAT94, was compared to that of the S‐LMS, a mixed adaptation model. The adaptation ratios of each model were varied to investigate the state of adaptation of the human visual system. Printed complex images were used as originals. A series of softcopy reproduction pairs was displayed on a CRT with a D93 white point and compared to the original in an illuminated room. Three ambient lights were studied: a D50 simulator, an Illuminant A simulator and a Cool‐white fluorescence lamp. The experiments were divided into nine phases according to the changes of illuminants and the luminance levels. A simultaneous binocular matching technique was employed. Observers compared the hardcopy with a given pair of softcopies and identified which reproduction was the closer colour match. The results showed that the state of adaptation of the human visual system was between 40–60% adapted to the white point of the monitor regardless of the changes in illumination conditions. The overall results showed that CMCCAT2000 with proper adaptation ratio outperformed the other models and could be applied to mixed adaptation conditions. © 2003 Wiley Periodicals, Inc. Col Res Appl, 28, 436–444, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/col.10196
Evaluation of color matching performances for SPEM and other models
Authors: Tsukada Masato , Tajima Johji , Yaguchi Hirohisa 
Published: October 2003

AbstractWe performed subjective experiments to evaluate color matching performance of the Spectral Properties Estimation Model (SPEM) and six other models (von Kries, CIELAB, LLAB, RLAB, Nayatani, and CIECAM97s) between two CRT monitors whose whites were quite different. Moreover, we evaluated color matching of these models between a CRT monitor and a printed image set in a dark room. The SPEM we developed is a new chromatic adaptation model based on hypothetical spectral properties estimation. This article describes the subjective experiments and the results obtained. The SPEM produced good color matching performance in the experiments. The detailed algorithm of the SPEM is given in the Appendix. © 2003 Wiley Periodicals, Inc. Col Res Appl, 28, 445–453, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/col.10197
Color printer characterization adjustment for different substrates
Authors: Shaw Mark , Sharma Gaurav , Bala Raja , Dalal Edul N. 
Published: October 2003

AbstractThe use of multiple substrates in color printers requires color characterization for each of the individual substrates. A full re‐characterization for each substrate is measurement and labor intensive. In this article, a variety of methods are proposed and evaluated for determining the color characterization for a new substrate based on a complete characterization on a reference substrate and a small number of additional measurements for the new substrate. This saves significant time and effort in comparison to the traditional method of repeating the color characterization for each new substrate. The methods developed and tested include model‐based approaches based on Beer's law, Kubelka‐Munk theory, and Neugebauer equations; and an empirical technique based on principal component analysis. Results indicate that the model based techniques offer only a small improvement over direct use of the reference characterization, whereas, the empirical technique offers a more significant improvement with as few as 26 measurements on the new substrate. © 2003 Wiley Periodicals, Inc. Col Res Appl, 28, 454–467, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/col.10198