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Riederer I, Karampinos DC, Settles M, Preibisch C, Bauer JS, Kleine JF, Mühlau M, Zimmer C. Double inversion recovery sequence of the cervical spinal cord in multiple sclerosis and related inflammatory diseases. AJNR Am J Neuroradiol 2014; 36:219-25. [PMID: 25169924 DOI: 10.3174/ajnr.a4093] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE MR imaging plays an important role in diagnosing MS and other related inflammatory diseases; however, imaging of the spinal cord is still challenging. We hypothesized that a 3D double inversion recovery sequence for cervical spinal cord imaging would be more sensitive in detecting inflammatory lesions than a conventional 2D T2-weighted TSE sequence at 3T. MATERIALS AND METHODS On a 3T MR imaging scanner, we examined 30 patients with suspected or established MS (MS, n = 16; clinically isolated syndrome, n = 12; isolated myelitis, n = 2) and 10 healthy controls. Newly developed 3D double inversion recovery and conventional 2D axial and sagittal T2-weighted TSE images of the cervical spinal cord were acquired. Two blinded neuroradiologists independently assessed the scans in pseudorandomized order for lesion numbers and rated lesion visibility and overall image quality on 5-point scales. A subsequent consensus reading delivered definite lesion counts. Standardized contrast-to-noise ratios were calculated in representative lesions of each patient. RESULTS Overall, 28% more lesions could be detected with 3D double inversion recovery than with conventional T2WI (119 versus 93, P < .002). On average, the standardized contrast-to-noise ratio was significantly higher (P < .001) in double inversion recovery than in T2WI. Lesion visibility was rated significantly higher (P < .001) in double inversion recovery compared with T2WI despite lower image quality. CONCLUSIONS The novel 3D double inversion recovery sequence allowed better detection of lesions in MS and related inflammatory diseases of the cervical spinal cord, compared with conventional 2D T2WI.
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Affiliation(s)
- I Riederer
- From the Departments of Diagnostic and Interventional Neuroradiology (I.R., C.P., J.S.B., J.F.K., C.Z.)
| | | | - M Settles
- Diagnostic and Interventional Radiology (D.C.K., M.S.)
| | - C Preibisch
- From the Departments of Diagnostic and Interventional Neuroradiology (I.R., C.P., J.S.B., J.F.K., C.Z.) Neuroimaging Center at the Technische Universität München (C.P., M.M.)
| | - J S Bauer
- From the Departments of Diagnostic and Interventional Neuroradiology (I.R., C.P., J.S.B., J.F.K., C.Z.)
| | - J F Kleine
- From the Departments of Diagnostic and Interventional Neuroradiology (I.R., C.P., J.S.B., J.F.K., C.Z.)
| | - M Mühlau
- Neuroimaging Center at the Technische Universität München (C.P., M.M.) Department of Neurology (M.M.), Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - C Zimmer
- From the Departments of Diagnostic and Interventional Neuroradiology (I.R., C.P., J.S.B., J.F.K., C.Z.)
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Wildgruber M, Bielicki I, Kosanke K, Settles M, Huber AM, Rummeny EJ, Botnar RM. Bildgebung des murinen Myokardinfarktes mittels eines Elastin-bindenden MRT Kontrastmittels. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346240] [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: 10/26/2022]
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Wildgruber M, Settles M, Kosanke K, Bielicki I, Rummeny EJ, Botnar RM, Huber AM. Etablierung einer phasen-sensitiven Inversion Recovery Sequenz zum delayed-enhancement Imaging des akuten Myokardinfarktes in der Maus mit einem klinischen MR Scanner. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346229] [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: 10/26/2022]
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Groß C, Sayyed S, Kosanke Y, Settles M, Steingötter A, Menne D, Altomonte J, Esposito I, Feuchtinger A, Rummeny EJ, Braren R. Vergleichende Analyse verschiedener Tumormodellsysteme des HCC der Ratte. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346233] [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: 10/26/2022]
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Wildgruber M, Settles M, Herrmann K, Beer AJ, Rummeny EJ, Huber AM. Inversion-recovery single-shot cardiac MRI for the assessment of myocardial infarction at 1.5 T with a dedicated cardiac coil. Br J Radiol 2012; 85:e709-15. [PMID: 22919017 DOI: 10.1259/bjr/57965172] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE The aim of this study was to assess the diagnostic accuracy of imaging myocardial infarction with a two-dimensional (2D) single-shot inversion-recovery (IR)-gradient-echo (GE) sequence compared with a standard 2D segmented IR-GE sequence at 1.5 T using a dedicated cardiac coil. METHODS 22 patients with myocardial infarction documented in the past 3-12 months were examined at 1.5 T using a 5 channel cardiac coil. Imaging of delayed enhancement was performed 15 min after administration of 0.2 mmol of gadopentetate dimeglumine per kilogram of body weight. Immediately after completion of the single-shot sequence, which allows for coverage of the entire ventricle during a single breath-hold with nine slices, the segmented IR sequence was started. Infarct volumes, infarct transmurality and contrast-to-noise ratios (CNRs) of infarcted and healthy myocardium were compared between both techniques. RESULTS Despite a moderate, non-significant loss of CNR (CNR(single-shot IR)=31.2±4.1; CNR(segmented IR)=37.9±4.1; p=0.405), the 2D single-shot technique correctly determined infarct size when compared with the standard 2D segmented IR-GE sequence. Assessment of both infarct volume (r=0.95; p<0.0001) and transmurality (r=0.97; p<0.0001) is possible, with excellent correlation of both techniques. CONCLUSION Single-shot delayed enhancement imaging during a single breath-hold is feasible at 1.5 T with the use of a dedicated cardiac coil. Despite a moderately lower CNR, the single-shot technique allows for fast and accurate determination of infarct size with high spatial resolution and has the potential to reduce electrocardiogram and breathing artefacts.
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Affiliation(s)
- M Wildgruber
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany.
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Jaroni J, Herrmann K, Settles M, Beer AJ, Rummeny E, Huber AM. Beurteilung der linksventrikulären Funktionsparameter mit Cine-MRT und 3D kt-BLAST. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311285] [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: 10/28/2022]
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Braren R, Mykhaylyk O, Almstätter I, Settles M, Kosanke Y, Plank C, Ebert O, Rummeny E, Altomonte J. Magnetisches Targeting von onkolytischem Vesikulärem Stomatitis Virus (VSV) in einem hepatozellulärem Karzinom (HCC) Modell der Ratte. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311063] [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: 10/28/2022]
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Huber A, Herrmann K, Settles M, Betz M, Beer A, Rummeny E. 3D PSIR Gradient Echo zur Beurteilung der Myokardvitalität. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279076] [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: 10/18/2022]
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Wiener E, Settles M, Weirich G, Schmidt C, Diederichs G. The influence of collagen network integrity on the accumulation of gadolinium-based MR contrast agents in articular cartilage. ROFO-FORTSCHR RONTG 2010; 183:226-32. [PMID: 21058237 DOI: 10.1055/s-0029-1245739] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE Delayed gadolinium-enhanced MR imaging of cartilage is used to quantify the proteoglycan loss in early osteoarthritis. It is assumed that T1 after Gd-DTPA administration in the near equilibrium state reflects selective proteoglycan loss from cartilage. To investigate the influence of the collagen network integrity on contrast accumulation, the relaxation rates ΔR(1) and ΔR(2) were compared after Gd-DTPA administration in a well established model of osteoarthritis. MATERIALS AND METHODS Collagen or proteoglycan depletion was induced by the proteolytic enzymes papain and collagenase in healthy bovine patellar cartilage. Using a dedicated MRI sequence, T(1) and T(2) maps were simultaneously acquired before and 11 h after Gd-DTPA administration. Depth-dependent profiles of ΔR(1) and ΔR(2) were calculated in healthy, proteoglycan and collagen-depleted articular cartilage and the mean values of different cartilage layers were compared using the Mann-Whitney-U test. RESULTS In superficial layers (1 mm) there was no significant difference (p > 0.05) in either ΔR(1) or ΔR(2) between proteoglycan-depleted (16.6 ± 1.2 s(-1), 15.9 ± 1.0 s(-1)) and collagen-depleted articular cartilage (15.3 ± 0.9 s(-1), 15.5 ± 0.9 s(-1)). In deep layers (3 mm) both parameters were significantly higher (p = 0.005, 0.03) in proteoglycan-depleted articular cartilage (12.3 ± 1.1 s(-1), 9.8 ± 0.8 s(-1)) than in collagen-depleted articular cartilage (9.1 ± 1.1 s(-1), 8.7 ± 0.7 s(-1)). CONCLUSION Both proteoglycan loss and alterations in the collagen network influence the accumulation of Gd-DTPA in articular cartilage with significant differences between superficial and deep cartilage layers.
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Affiliation(s)
- E Wiener
- Institut für Radiologie, Charité Universitätsmedizin Berlin, Berlin.
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10
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Artmann A, Boehm NA, Laemmer-Skarke I, Annecke K, Settles M, Jacobs VR, Kiechle M, Rummeny EJ. Morphological pattern of MR mammography in breast cancer patients with HER2 overexpression. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e11038] [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: 11/20/2022] Open
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Huber A, Settles M, Beer A, Herrmann K, Rummeny E. Anwendung einer „double inversion recovery black blood“ Gradientenecho Technik für die Beurteilung des Myokardinfarktes. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252799] [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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Settles M, Zanella R, McKay SD, Schnabel RD, Taylor JF, Whitlock R, Schukken Y, Van Kessel JS, Smith JM, Neibergs H. A whole genome association analysis identifies loci associated with Mycobacterium avium subsp. paratuberculosis infection status in US holstein cattle. Anim Genet 2009; 40:655-62. [PMID: 19422364 DOI: 10.1111/j.1365-2052.2009.01896.x] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The purpose of this study was to identify loci associated with Mycobacterium avium subspecies paratuberculosis (Map) infection status in US Holsteins using the Illumina BovineSNP50 BeadChip whole genome single nucleotide polymorphism (SNP) assay. Two hundred forty-five cows from dairies in New York, Pennsylvania and Vermont enrolled in longitudinal herd studies between January 1999 and November 2007 were assessed for the presence of Map in both faecal and tissue samples. An animal was considered tissue infected if any sample contained at least one colony forming unit of Map per gram of tissue (CFU/g) and the same definition was employed for faecal samples. Each animal was genotyped with the Illumina BovineSNP50 BeadChip and after quality assurance filtering, 218 animals and 45 683 SNPs remained. We sought to identify loci associated with four different case/control classifications: presence of Map in the tissue, presence of Map in faeces, presence of Map in both tissue and faeces and presence of Map in tissue but not faeces. A case-control genome wide association study was conducted to test the four different classifications of Map infection status (cases) when compared with a Map-negative control group (control). Regions on chromosomes 1, 5, 7, 8, 16, 21 and 23 were identified with moderate significance (P < 5 x 10(-5)). Two regions, one on chromosome 3 (near EDN2) and another on chromosome 9 (no positional gene candidates), were identified with a high level of association to the presence of Map in tissue and both tissue and faeces respectively (P < 5 x 10(-7), genome-wide Bonferonni P < 0.05).
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Affiliation(s)
- M Settles
- Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
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Meier R, Beer AJ, Kimm MA, Krönig H, Settles M, Rummeny EJ, Bernhard H. MR-Monitoring von Antigen-spezifischen humanen zytotoxischen T-Lymphozyten mittels Markierung mit superparamagnetischen Eisenoxiden. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221744] [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: 10/20/2022]
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Saar B, Meining A, Beer A, Settles M, Helmberger H, Frimberger E, Rummeny EJ, Rösch T. Prospective study on bright lumen magnetic resonance colonography in comparison with conventional colonoscopy. Br J Radiol 2007; 80:235-41. [PMID: 17329681 DOI: 10.1259/bjr/83959666] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [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: 12/15/2022] Open
Abstract
The aim of this prospective trial was to evaluate sensitivity and specificity of bright lumen magnetic resonance colonography (MRC) in comparison with conventional colonoscopy (CC). A total of 120 consecutive patients with clinical indications for CC were prospectively examined using MRC (1.5 Tesla) which was then followed by CC. Prior to MRC, the cleansed colon was filled with a gadolinium-water solution. A 3D GRE sequence was performed with the patient in the prone and supine position, each acquired during one breathhold period. After division of the colon into five segments, interactive data analysis was carried out using three-dimensional post-processing, including a virtual intraluminal view. The results of CC served as a reference standard. In all patients MRC was performed successfully and no complications occurred. Image quality was diagnostic in 92% (574/620 colonic segments). On a per-patient basis, the results of MRC were as follows: sensitivity 84% (95% CI 71.7-92.3%), specificity 97% (95% CI 89.0-99.6%). Five flat adenomas and 6/16 small polyps (< or =5 mm) were not identified by MRC. MRC offers high sensitivity and excellent specificity rates in patients with clinical indications for CC. Improved MRC techniques are needed to detect small polyps and flat adenomas.
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Affiliation(s)
- B Saar
- Department of Diagnostic, Interventional and Pediatric Radiology, University Hospital of Berne, Inselspital, Switzerland.
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Metz S, Heider P, Settles M, Botnar R, Rummeny EJ. Evaluierung arteriosklerotischer Plaques mit SHU 555 C – verstärkter MRT bei Patienten mit hochgradiger Karotisstenose. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977199] [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: 10/21/2022]
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Holzapfel K, Beer AJ, Neudorfer J, Piontek G, Settles M, Rummeny EJ, Bernhard H. In vitro-Markierung humaner zytotoxischer T-Lymphozyten mit superparamagnetischen Eisenoxid-Partikeln. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977340] [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: 10/21/2022]
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Wiener E, Wörtler K, Settles M, Rummeny E. Kontrastmittel verstärkte MRT des Gelenkknorpels zur Differenzierung zwischen Proteoglycan- und Kollagenverlust. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940622] [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: 10/20/2022]
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Schott VR, Kolk A, Wiener E, Ventrella E, Neff A, Settles M, Rummeny EJ. Vergleich der hochauflösenden MRT mit dem 16-Zeilen-MSCT zur postoperativen Kontrolle symptomatischer Patienten nach Orbitawandrekonstruktionen. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867835] [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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Simon G, Link TM, Wörtler K, Doebereiner F, Schulte-Frohlinde E, Daldrup-Link H, Settles M, Rummeny EJ. Detection of hepatocellular carcinoma: comparison of Gd-DTPA- and ferumoxides-enhanced MR imaging. Eur Radiol 2005; 15:895-903. [PMID: 15800773 DOI: 10.1007/s00330-005-2669-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2004] [Revised: 01/07/2005] [Accepted: 01/11/2005] [Indexed: 12/30/2022]
Abstract
The aim was to compare the diagnostic performance of dynamic Gd-DTPA- and ferumoxides-enhanced MRI for hepatocellular carcinoma (HCC). Twenty-five patients with chronic hepatitis or liver cirrhosis underwent both dynamic gadopentetate- and ferumoxides-enhanced MRI studies of the liver for HCC detection on the same day. MR data of both studies were retrospectively and independently analyzed. Two observers determined in consensus the grade of diffuse fibrotic liver changes (mild, moderate or severe) and the number of focal lesions. HCCs were confirmed by histology (n=22) and/or follow-up studies for at least six months (n=64). Differences in results obtained from both MR data sets were tested for significance with the McNemar's test (p<0.05). Ferumoxides-enhanced MR images detected 84 of 99 hepatic lesions, including 82 of 86 HCCs and 2 false positive, nonmalignant lesions, while Gd-DTPA-enhanced MR images detected 92 of 99 hepatic lesions, including 81 of 86 HCCs and 11 false positive, nonmalignant lesions. Sensitivity of MRI for detection of HCCs was not significantly different between ferumoxides-enhanced (95.3%; p>0.05) and Gd-DTPA-enhanced scans (94.2%). Gd-DTPA- and ferumoxides-enhanced MRI perform equally well for HCC detection. The majority of small hypervascular hepatic lesions, detected on dynamic Gd-DTPA-enhanced MRI but not on ferumoxides-enhanced MRI, represent no HCCs.
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Affiliation(s)
- G Simon
- Department of Radiology, Technical University Munich, Germany.
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Hamburger M, Settles M, Teutsch J. Identification of an immunogenic candidate for the elicitation of severe acute inflammatory reactions (SAIRs) to hylan G-F 20. Osteoarthritis Cartilage 2005; 13:266-8. [PMID: 15727894 DOI: 10.1016/j.joca.2004.11.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2004] [Accepted: 11/29/2004] [Indexed: 02/02/2023]
Affiliation(s)
- M Hamburger
- Rheumatology Associates of Long Island, Melville, NY 11787, USA.
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Wiener E, Kolk A, Neff A, Settles M, Rummeny E. Evaluation of reconstructed orbital wall fractures: high-resolution MRI using a microscopy surface coil versus 16-slice MSCT. Eur Radiol 2005; 15:1250-5. [PMID: 15711842 DOI: 10.1007/s00330-005-2660-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2004] [Revised: 12/12/2004] [Accepted: 12/21/2004] [Indexed: 11/27/2022]
Abstract
We evaluated high-resolution magnetic resonance imaging (MR) using a 47-mm microscopy surface coil in comparison to 16-slice multislice CT (MSCT) for postsurgical imaging of reconstructed orbital walls. Twenty-five patients with 27 internal orbital wall fractures were imaged prospectively after reconstruction with resorbable polydioxanone sulfate (PDS) sheets. Coronal high-quality T1- and T2-weighted MR images were obtained with an in-plane resolution of 350 microm within a measure time of 6-7 min for each sequence. Nineteen symptomatic patients underwent MSCT as the current gold standard. In MRI the PDS foil appears in T1- and T2-weighted images as a thin, low-signal-intensity linear structure. In CT it appears hyperdense in comparison to soft tissue and slightly hypodense in comparison to cortical bone. PDS foils could be clearly depicted in 20 out of 25 patients (80%) with MRI and in 13 out of 19 patients (68%) with MSCT. An inadequate foil position or size could be diagnosed in eight patients with MRI and in only three patients with MSCT. In ten symptomatic patients secondary surgery could be avoided because of regular MRI findings except mild hematoma and muscle edema. High-resolution MRI of the orbit using a 47-mm microscopy coil is a promising method to accurately demonstrate normal and pathologic conditions in symptomatic patients after orbital wall reconstruction with PDS foils.
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Affiliation(s)
- E Wiener
- Klinikum rechts der Isar, Institut für Röntgendiagnostik, Munich, Germany.
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Metz S, Bonaterra G, Rudelius M, Settles M, Rummeny EJ, Daldrup-Link HE. Phagozytose von verschiedenen, klinisch einsetzbaren superparamagnetischen MR-Kontrastmitteln durch humane Monozyten nach simpler in-vitro-Inkubation. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827955] [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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Wörtler K, Settles M, Martinek V, Rummeny EJ. Osteochondrale Autografts: postoperative MRT unter Einsatz hochauflösender FSE-Sequenzen mit DRIVE-Impuls. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-828167] [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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Wiener E, Wörtler K, Settles M, Rummeny EJ. Vergleich ionischer und nicht-ionischer MR-Kontrastmittel zur kontrastverstärkten Knorpelbildgebung. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827746] [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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Buettner A, Beer A, Hannig C, Settles M. Observation of the swallowing process by application of videofluoroscopy and real-time magnetic resonance imaging-consequences for retronasal aroma stimulation. Chem Senses 2001; 26:1211-9. [PMID: 11705807 DOI: 10.1093/chemse/26.9.1211] [Citation(s) in RCA: 161] [Impact Index Per Article: 7.0] [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: 11/14/2022] Open
Abstract
The process of eating and drinking was observed in vivo by application of videofluoroscopy, a dynamic X-ray technique, as well as real-time magnetic resonance imaging. The study was aimed at elucidating the timing and performance of the physiological organs involved in mastication and swallowing, mainly the tongue, the pharynx and the soft palate (velum palatinum). It was shown for the first time that effective physiological barriers do exist during food consumption that are capable of retaining volatiles such as helium within the oral cavity. These barriers allow the access of odorants to the nasal cavity only at certain times during the eating process. Their effectiveness is related to the texture of the food as well as the amount of food material present in the oral cavity and, thereby, directly influences retronasal aroma perception.
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Affiliation(s)
- A Buettner
- Deutsche Forschungsanstalt für Lebensmittelchemie, Lichtenbergstrasse 4, D-85748 Garching, Germany.
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Beer A, Saar B, Link TM, Settles M, Drews C, Schwaibold H, Rummeny EJ. [Virtual endoscopy of the urinary tract from T(2)-weighted and gadolinium-enhanced T(1)-weighted MR urographic images]. ROFO-FORTSCHR RONTG 2001; 173:997-1005. [PMID: 11704909 DOI: 10.1055/s-2001-18317] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [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: 10/17/2022]
Abstract
PURPOSE To determine the diagnostic performance of T(2)-weighted (T2w) and gadolinium-enhanced T(1)-weighted (T1w-Gd-enhanced) MR urographic images for virtual endoscopy of the urinary tract. MATERIALS AND METHODS 36 patients underwent MR urography at 1.5 T. In each patient a T2w (3D-TSE, respiration-triggered) and a T1w-Gd-enhanced sequence (T1-FFE, breathhold) were acquired. Data reconstruction was performed as maximum intensity projection (MIP) and virtual endoscopy (VE). RESULTS Combined analysis of MIP and VE delineated 32 of 36 pathologies; 86 % (19/22) of intraluminal pathologies could be depicted by VE and 15 % (3/22) by MIP (p </= 0.01). For the assessment of the renal pelvis, MIP was superior to VE in 55 % (39/71). Concerning the ureter, MIP was equal in 52 % (37/71) and superior to VE in 45 % (32/71). For virtual ureterorenoscopy both data sets were comparable in their diagnostic performance. T2w data sets were superior for virtual cystoscopy because no contrast medium is required in cases of renal failure and sedimentation artifacts can be avoided. CONCLUSION For the depiction of the upper urinary tract, MIP is in most cases equally good or superior to VE. However, virtual endoscopy of the urinary tract, especially virtual cystoscopy, is a useful tool for the depiction of intraluminal pathology.
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Affiliation(s)
- A Beer
- Institut für Röntgendiagnostik, Urologische Klinik und Poliklinik, TU München, Klinikum rechts der Isar.
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Wiener E, Settles M, Ganter C. The quantification of DeltaR2(*) under brain activation: dependence on relaxation rate at rest and significance threshold. Magn Reson Imaging 2001; 19:649-57. [PMID: 11672623 DOI: 10.1016/s0730-725x(01)00370-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 10/27/2022]
Abstract
Transverse relaxation rates R2(*) were measured in subjects performing a motor task using a segmented EPI double gradient echo sequence (TE = 23/70 ms) with five different voxel sizes between 1.8 mm(3) and 41.7 mm(3). An analysis of the errors involved in the calculation of the change of the transverse relaxation rate--DeltaR2(*) and of the consequences of defining an arbitrary threshold of statistical significance in the data analysis was performed. Correlations between the magnitude of the BOLD effect and the significance level on one hand and between the transverse relaxation time at rest and its change under activation on the other, both referenced in the literature, can be understood as a consequence of this procedure. Analysing histograms of parameter changes rather than average values alone allows for an estimate of the contribution of false positive voxels. Furthermore, while the averaged signal change increases in proportion to the selection threshold the histograms of activated voxels remain insensitive to the latter.
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Affiliation(s)
- E Wiener
- Institut fuer Roentgendiagnostik, Klinikum rechts der Isar der TU Muenchen, Munich, Germany
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Kleinert T, Doster W, Leyser H, Petry W, Schwarz V, Settles M. Solvent composition and viscosity effects on the kinetics of CO binding to horse myoglobin. Biochemistry 1998; 37:717-33. [PMID: 9425096 DOI: 10.1021/bi971508q] [Citation(s) in RCA: 127] [Impact Index Per Article: 4.9] [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: 02/05/2023]
Abstract
Ligand binding to myoglobin in aqueous solution involves two kinetic components, one extramolecular and one intramolecular, which have been interpreted in terms of two sequential kinetic barriers. In mixed solvents and sub-zero temperatures, the outer barrier increases and the inner barrier splits into several components, giving rise to fast intramolecular recombination. The nature of these barriers and their relation to structural relaxation are examined using the effect of solvent composition and viscosity on the kinetics of CO binding to horse myoglobin in 60% ethylene glycol/water, 75% and 90% glycerol/water, 80% and 92% sucrose/water solutions. Measurements of the corresponding solvent structural relaxation rates by frequency resolved calorimetry allow us to discriminate between solvent composition and viscosity-related effects. The outer kinetic barrier controlling ligand entry and release depends on the viscosity consistent with Kramers-Stokes law of activated escape in the presence of friction. At high cosolvent concentration, we observe deviations from Stokes law, implying a smaller microviscosity at the protein-solvent interface as compared to the bulk. The inner barrier and its coupling to structural relaxation appears to be independent of viscosity but changes with solvent composition. As a possible explanation, we discuss the role of distal water molecules in the formation of the effective inner barrier. At low temperatures, this barrier has a distributed height, depending only slightly on the nature of the cosolvent and temperature at low cosolvent concentrations. In contrast, myoglobin embedded in a sucrose glass (92% sucrose/water) exhibits a temperature-dependent and bimodal enthalpy distribution. This result demonstrates that the exchange between protonation states of His64, A0 left and right arrow A1, can take place in the glass and at temperatures as low as 80 K.
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Affiliation(s)
- T Kleinert
- Technische Universität München, Physik-Department E13, D-85747 Garching, Germany
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Akers R, Alexander G, Allison J, Altekamp N, Ametewee K, Anderson KJ, Anderson S, Arcelli S, Asai S, Axen D, Azuelos G, Ball AH, Barberio E, Barlow RJ, Bartoldus R, Batley JR, Beaudoin G, Bethke S, Beck A, Beck GA, Beeston C, Behnke T, Bell KW, Bella G, Bentvelsen S, Berlich P, Bechtluft J, Biebel O, Bloodworth IJ, Bock P, Bosch HM, Boutemeur M, Braibant S, Bright-Thomas P, Brown RM, Buijs A, Burckhart HJ, Bürgin R, Burgard C, Capiluppi P, Carnegie RK, Carter AA, Carter JR, Chang CY, Charlesworth C, Charlton DG, Chu SL, Clarke PEL, Clayton JC, Clowes SG, Cohen I, Conboy JE, Cooke OC, Cuffiani M, Dado S, Dallapiccola C, Dallavalle GM, Darling C, Jong S, Pozo LA, Deng H, Dixit MS, Couto e Silva E, Duboscq JE, Duchovni E, Duckeck G, Duerdoth IP, Dunwoody UC, Edwards JEG, Estabrooks PG, Evans HG, Fabbri F, Fabbro B, Fanti M, Fath P, Fiedler F, Fierro M, Fincke-Keeler M, Fischer HM, Folman R, Fong DG, Foucher M, Fukui H, Fürtjes A, Gagnon P, Gaidot A, Gary JW, Gascon J, Gascon-Shotkin SM, Geddes NI, Geich-Gimbel C, Gensler SW, Gentit FX, Geralis T, Giacomelli G, Giacomelli P, Giacomelli R, Gibson V, Gibson WR, Gillies JD, Goldberg J, Gingrich DM, Goodrick MJ, Gorn W, Grandi C, Gross E, Hanson GG, Hansroul M, Hapke M, Hargrove CK, Hart PA, Hartmann C, Hauschild M, Hawkes CM, Hawkings R, Hemingway RJ, Herten G, Heuer RD, Hill JC, Hillier SJ, Hilse T, Hobson PR, Hochman D, Homer RJ, Honma AK, Howard R, Hughes-Jones RE, Hutchcroft DE, Igo-Kemenes P, Imrie DC, Jawahery A, Jeffreys PW, Jeremie H, Jimack M, Joly A, Jones M, Jones RWL, Jovanovic P, Karlen D, Kanzaki J, Kawagoe K, Kawamoto T, Keeler RK, Kellogg RG, Kennedy BW, King BJ, King J, Kirk J, Kluth S, Kobayashi T, Kobel M, Koetke DS, Kokott TP, Komamiya S, Kowalewski R, Kress T, Krieger P, Krogh J, Kyberd P, Lafferty GD, Lafoux H, Lahmann R, Lai WP, Lanske D, Lauber J, Layter JG, Lee AM, Lefebvre E, Lellouch D, Letts J, Levinson L, Lloyd SL, Loebinger FK, Long GD, Lorazo B, Losty MJ, Ludwig J, Luig A, Malik A, Mannelli M, Marcllini S, Markus C, Martin AJ, Martin JP, Mashimo T, Matthews W, Mättig P, McKenna J, Mckigney EA, McMahon TJ, McNab AI, Meijers F, Menke S, Merritt FS, Mes H, Michelini A, Mikenberg G, Miller DJ, Mir R, Mohr W, Montanari A, Mori T, Morii M, Müller U, Nellen B, Nijjhar B, O'Neale SW, Oakham FG, Odorici F, Ogren HO, Oldershaw NJ, Oram CJ, Oreglia MJ, Orito S, Palmonari F, Pansart JP, Patrick GN, Pearce MJ, Phillips PD, Pilcher JE, Pinfold J, Plane DE, Poffenberger P, Poli B, Posthaus A, Pritchard TW, Przysiezniak H, Redmond MW, Rees DL, Rigby D, Rison MG, Robins SA, Rodning N, Roney JM, Ros E, Rossi AM, Rosvick M, Routenburg P, Rozen Y, Runge K, Runolfsson O, Rust DR, Sasaki M, Sbarra C, Schaile AD, Schaile O, Scharf F, Scharff-Hansen P, Schenk P, Schmitt B, Schröder M, Schultz-Coulon HC, Schütz P, Schulz M, Schwiening J, Scott WG, Settles M, Shears TG, Shen BC, Shepherd-Themistocleous CH, Sherwood P, Siroli GP, Skillman A, Skuja A, Smith AM, Smith TJ, Snow GA, Sobie R, Söldner-Rembold S, Springer RW, Sproston M, Stahl A, Starks M, Stegmann C, Stephens K, Steuerer J, Stockhausen B, Strom D, Szymanski P, Tafirout R, Taras P, Tarem S, Tecchio M, Teixeira-Dias P, Tesch N, Thomson MA, Törne E, Towers S, Tscheulin M, Tsukamoto T, Turcot AS, Turner-Watson MF, Utzat P, Kooten R, Vasseur G, Vikas P, Vincter M, Wäckerle F, Wagner A, Wagner DL, Ward CP, Ward DR, Ward JJ, Watkins PM, Watson AT, Watson NK, Weber P, Wells PS, Wermes N, Wilkens B, Wilson GW, Wilson JA, Wlodek T, Wolf G, Wotton S, Wyatt TR, Yekutieli G, Zacek V, Zeuner W, Zorn GT. Measurement of the τ−→h − h + h − v τ and τ−→h − h + h −≥1π0 v τ branching ratios. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf01565256] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Akers R, Alexander G, Allison J, Altekamp N, Ametewee K, Anderson KJ, Anderson S, Arcelli S, Asai S, Axen D, Azuelos G, Ball AH, Barberio E, Barlow RJ, Bartoldus R, Batley JR, Beaudoin G, Bethke S, Beck A, Beck GA, Beeston C, Behnke T, Bell KW, Bella G, Bentvelsen S, Berlich P, Bechtluft J, Biebel O, Bloodworth IJ, Bock P, Bosch HM, Boutemeur M, Braibant S, Bright-Thomas P, Brown RM, Buijs A, Burckhart HJ, B�rgin R, Burgard C, Capiluppi P, Carnegie RK, Carter AA, Carter JR, Chang CY, Charlesworth C, Charlton DG, Chu SL, Clarke PEL, Clayton JC, Clowes SG, Cohen I, Conboy JE, Cooke OC, Cuffiani M, Dado S, Dallapiccola C, Dallavalle GM, Darling C, Jong S, Pozo LA, Deng H, Dixit MS, do Couto e Silva E, Duboscq JE, Duchovni E, Duckeck G, Duerdoth IP, Dunwoody UC, Edwards JEG, Estabrooks PG, Evans HG, Fabbri F, Fabbro B, Fanti M, Fath P, Fiedler F, Fierro M, Fincke-Keeler M, Fischer HM, Folman R, Fong DG, Foucher M, Fukui H, F�rtjes A, Gagnon P, Gaidot A, Gary JW, Gascon J, Geddes NI, Geich-Gimbel C, Gensler SW, Gentit FX, Geralis T, Giacomelli G, Giacomelli P, Giacomelli R, Gibson V, Gibson WR, Gillies JD, Goldberg J, Gingrich DM, Goodrick MJ, Gorn W, Grandi C, Gross E, Hanson GG, Hansroul M, Hapke M, Hargrove CK, Hart PA, Hartmann C, Hauschild M, Hawkes CM, Hawkings R, Hemingway RJ, Herten G, Heuer RD, Hill JC, Hillier SJ, Hilse T, Hobson PR, Hochman D, Homer RJ, Honma AK, Howard R, Hughes-Jones RE, Hutchcroft DE, Igo-Kemenes P, Imrie DC, Jawahery A, Jeffreys PW, Jeremie H, Jimack M, Joly A, Jones M, Jones RWL, Jovanovic P, Karlen D, Kanzaki J, Kawagoe K, Kawamoto T, Keeler RK, Kellogg RG, Kennedy BW, King BJ, King J, Kirk J, Kluth S, Kobayashi T, Kobel M, Koetke DS, Kokott TP, Komamiya S, Kowalewski R, Kress T, Krieger P, Krogh J, Kyberd P, Lafferty GD, Lafoux H, Lahmann R, Lai WP, Lanske D, Lauber J, Layter JG, Lee AM, Lefebvre E, Lellouch D, Letts J, Levinson L, Lloyd SL, Loebinger FK, Long GD, Lorazo B, Losty MJ, Lou XC, Ludwig J, Luig A, Malik A, Mannelli M, Marcellini S, Markus C, Martin AJ, Martin JP, Mashimo T, Matthews W, M�ttig P, McKenna J, Mckigney EA, McMahon TJ, McNab AI, Meijers F, Menke S, Merritt FS, Mes H, Michelini A, Mikenberg G, Miller DJ, Mir R, Mohr W, Montanari A, Mori T, Morii M, M�ller U, Nellen B, Nijjhar B, O'Neale SW, Oakham FG, Odorici F, Ogren HO, Oldershaw NJ, Oram CJ, Oreglia MJ, Orito S, Palmonari F, Pansart JP, Patrick GN, Pearce MJ, Phillips PD, Pilcher JE, Pinfold J, Plane DE, Poffenberger P, Poli B, Posthaus A, Pritchard TW, Przysiezniak H, Redmond MW, Rees DL, Rigby D, Rison MG, Robins SA, Rodning N, Roney JM, Ros E, Rossi AM, Rosvick M, Routenburg P, Rozen Y, Runge K, Runolfsson O, Rust DR, Sasaki M, Sbarra C, Schaile AD, Schaile O, Scharf F, Scharff-Hansen P, Schenk P, Schmitt B, Schr�der M, Schultz-Coulon HC, Sch�tz P, Schulz M, Schwiening J, Scott WG, Settles M, Shears TG, Shen BC, Shepherd-Themistocleous CH, Sherwood P, Siroli GP, Skillman A, Skuja A, Smith AM, Smith TJ, Snow GA, Sobie R, S�ldner-Rembold S, Springer RW, Sproston M, Stahl A, Starks M, Stegmann C, Stephens K, Steuerer J, Stockhausen B, Strom D, Szymanski P, Tafirout R, Taras P, Tarem S, Tecchio M, Teixeira-Dias P, Tesch N, Thomson MA, T�rne E, Towers S, Tscheulin M, Tsukamoto T, Turcot AS, Turner-Watson MF, Utzat P, Kooten R, Vasseur G, Vikas P, Vincter M, W�ckerle F, Wagner A, Wagner DL, Ward CP, Ward DR, Ward JJ, Watkins PM, Watson AT, Watson NK, Weber P, Wells PS, Wermes N, Wilkens B, Wilson GW, Wilson JA, Wlodek T, Wolf G, Wotton S, Wyatt TR, Yekutieli G, Zacek V, Zeuner W, Zorn GT. A search for lepton flavour violating Z0 decays. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf01553981] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Akers R, Alexander G, Allison J, Ametewee K, Anderson KJ, Arcelli S, Asai S, Axen D, Azuelos G, Ball AH, Barberio E, Barlow RJ, Bartoldus R, Batley JR, Beaudoin G, Beck A, Beck GA, Beeston C, Behnke T, Bell KW, Bella G, Bentvelsen S, Berlich P, Bethke S, Biebel O, Bloodworth IJ, Bock P, Bosch HM, Boutemeur M, Braibant S, Bright-Thomas P, Brown RM, Buijs A, Burckhart HJ, Bürgin R, Burgard C, Capdevielle N, Capiluppi P, Carnegie RK, Carter AA, Carter JR, Chang CY, Charlesworth C, Charlton DG, Chu SL, Clarke PEL, Clayton JC, Clowes SG, Cohen I, Conboy JE, Cooke OC, Cuffiani M, Dado S, Dallapiccola C, Dallavalle GM, Darling C, Jong S, Pozo LA, Deng H, Dittmar M, Dixit MS, Couto e Silva E, Duboscq JE, Duchovni E, Duckeck G, Duerdoth IP, Dunwoody UC, Edwards JEG, Elcombe PA, Estabrooks PG, Etzion E, Evans HG, Fabbri F, Fabbro B, Fanti M, Fath P, Fierro M, Fincke-Keeler M, Fischer HM, Fischer P, Folman R, Fong DG, Foucher M, Fukui H, Fürtjes A, Gagnon P, Gaidot A, Gary JW, Gascon J, Geddes NI, Geich-Gimbel C, Gensler SW, Gentit FX, Geralis T, Giacomelli G, Giacomelli P, Giacomelli R, Gibson V, Gibson WR, Gillies JD, Goldberg J, Gingrich DM, Goodrick MJ, Gorn W, Grandi C, Gross E, Hagemann J, Hanson GG, Hansroul M, Hargrove CK, Hart PA, Hauschild M, Hawkes CM, Heflin E, Hemingway RJ, Herten G, Heuer RD, Hill JC, Hillier SJ, Hilse T, Hobson PR, Hochman D, Homer RJ, Honma AK, Howard R, Hughes-Jones RE, Igo-Kemenes P, Imrie DC, Jawahery A, Jeffreys PW, Jeremie H, Jimack M, Jones M, Jones RWL, Jovanovic P, Jui C, Karlen D, Kanzaki J, Kawagoe K, Kawamoto T, Keeler RK, Kellogg RG, Kennedy BW, King B, King J, Kirk J, Kluth S, Kobayashi T, Kobel M, Koetke DS, Kokott TP, Komamiya S, Kowalewski R, Kress T, Krieger P, Krogh J, Kyberd P, Lafferty GD, Lafoux H, Lahmann R, Lai WP, Lauber J, Layter JG, Leblanc P, Lee AM, Lefebvre E, Lellouch D, Leroy C, Letts J, Levinson L, Lloyd SL, Loebinger FK, Long GD, Lorazo B, Losty MJ, Lou XC, Ludwig J, Luig A, Mannelli M, Marcellini S, Markus C, Martin AJ, Martin JP, Mashimo T, Matthews W, Mättig P, Maur U, McKenna J, McMahon TJ, McNab AI, Meijers F, Merritt FS, Mes H, Michelini A, Middleton RP, Mikenberg G, Miller DJ, Mir R, Mohr W, Montanari A, Mori T, Morii M, Müller U, Nellen B, Nijjhar B, O'Neale SW, Oakham FG, Odorici F, Ogren HO, Oldershaw NJ, Oram CJ, Oreglia MJ, Orito S, Palmonari F, Pansart JP, Patrick GN, Pearce MJ, Phillips PD, Pilcher JE, Pinfold J, Plane DE, Poffenberger P, Poli B, Posthaus A, Pritchard TW, Przysiezniak H, Redmond MW, Rees DL, Rigby D, Rison MG, Robins SA, Robinson D, Rodning N, Roney JM, Ros E, Rossi AM, Rosvick M, Routenburg P, Rozen Y, Runge K, Runolfsson O, Rust DR, Sasaki M, Sbarra C, Schaile AD, Schaile O, Scharf F, Scharff-Hansen P, Schenk P, Schmitt B, Schröder M, Schultz-Coulon HC, Schütz P, Schulz M, Schwick C, Schwiening J, Scott WG, Settles M, Shears TG, Shen BC, Shepherd-Themistocleous CH, Sherwood P, Siroli GP, Skillman A, Skuja A, Smith AM, Smith TJ, Snow GA, Sobie R, Söldner-Rembold S, Springer RW, Sproston M, Stahl A, Starks M, Stegmann C, Stephens K, Steuerer J, Stockhausen B, Strom D, Szymanski P, Tafirout R, Takeda H, Takeshita T, Taras P, Tarem S, Tecchio M, Teixeira-Dias P, Tesch N, Thomson MA, Tousignant O, Towers S, Tscheulin M, Tsukamoto T, Turcot AS, Turner-Watson MF, Utzat P, Kooten R, Vasseur G, Vikas P, Vincter M, Wagner A, Wagner DL, Ward CP, Ward DR, Ward JJ, Watkins PM, Watson AT, Watson NK, Weber P, Wells PS, Wermes N, Wilkens B, Wilson GW, Wilson JA, Winterer VH, Wlodek T, Wolf G, Wotton S, Wyatt TR, Yeaman A, Yekutieli G, Yurko M, Zacek V, Zeuner W, Zorn GT. Improved measurements of the B0 and B+ meson lifetimes. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf01624581] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Akers R, Alexander G, Allison J, Ametewee K, Anderson KJ, Arcelli S, Asai S, Axen D, Azuelos G, Ball AH, Barberio E, Barlow RJ, Bartoldus R, Batley JR, Beaudoin G, Beck A, Beck GA, Beeston C, Behnke T, Bell KW, Bella G, Bentvelsen S, Berlich P, Bethke S, Biebel O, Bloodworth IJ, Bock P, Bosch HM, Boutemeur M, Braibant S, Bright-Thomas P, Brown RM, Buijs A, Burckhart HJ, Bürgin R, Burgard C, Capdevielle N, Capiluppi P, Carnegie RK, Carter AA, Carter JR, Chang CY, Charlesworth C, Charlton DG, Chu SL, Clarke PEL, Clayton JC, Clowes SG, Cohen I, Conboy JE, Cooke OC, Cuffiani M, Dado S, Dallapiccola C, Dallavalle GM, Darling C, Jong S, Pozo LA, Deng H, Dittmar M, Dixit MS, do Couto e Silva E, Duboscq JE, Duchovni E, Duckeck G, Duerdoth IP, Dunwoody UC, Edwards JEG, Elcombe PA, Estabrooks PG, Etzion E, Evans HG, Fabbri F, Fabbro B, Fanti M, Fath P, Fierro M, Fincke-Keeler M, Fischer HM, Fischer P, Folman R, Fong DG, Foucher M, Fukui H, Fürtjes A, Gagnon P, Gaidot A, Gary JW, Gascon J, Geddes NI, Geich-Gimbel C, Gensler SW, Gentit FX, Geralis T, Giacomelli G, Giacomelli P, Giacomelli R, Gibson V, Gibson WR, Gillies JD, Goldberg J, Gingrich DM, Goodrick MJ, Gorn W, Grandi C, Gross E, Hagemann J, Hanson GG, Hansroul M, Hargrove CK, Hart PA, Hauschild M, Hawkes CM, Heflin E, Hemingway RJ, Herten G, Heuer RD, Hill JC, Hillier SJ, Hilse T, Hobson PR, Hochman D, Homer RJ, Honma AK, Howard R, Hughes-Jones RE, Igo-Kemenes P, Imrie DC, Jawahery A, Jeffreys PW, Jeremie H, Jimack M, Jones M, Jones RWL, Jovanovic P, Jui C, Karlen D, Kanzaki J, Kawagoe K, Kawamoto T, Keeler RK, Kellogg RG, Kennedy BW, King B, King J, Kirk J, Kluth S, Kobayashi T, Kobel M, Koetke DS, Kokott TP, Komamiya S, Kowalewski R, Kress T, Krieger P, Krogh J, Kyberd P, Lafferty GD, Lafoux H, Lahmann R, Lai WP, Lauber J, Layter JG, Leblanc P, Lee AM, Lefebvre E, Lellouch D, Leroy C, Letts J, Levinson L, Lloyd SL, Loebinger FK, Long GD, Lorazo B, Losty MJ, Lou XC, Ludwig J, Luig A, Mannelli M, Marcellini S, Markus C, Martin AJ, Martin JP, Mashimo T, Matthews W, Mättig P, Maur U, McKenna J, McMahon TJ, McNab AI, Meijers F, Merritt FS, Mes H, Michelini A, Middleton RP, Mikenberg G, Miller DJ, Mir R, Mohr W, Montanari A, Mori T, Morii M, Müller U, Nellen B, Nijjhar B, O'Neale SW, Oakham FG, Odorici F, Ogren HO, Oldershaw NJ, Oram CJ, Oreglia MJ, Orito S, Palmonari F, Pansart JP, Patrick GN, Pearce MJ, Phillips PD, Pilcher JE, Pinfold J, Plane DE, Poffenberger P, Poli B, Posthaus A, Pritchard TW, Przysiezniak H, Redmond MW, Rees DL, Rigby D, Rison MG, Robins SA, Robinson D, Rodning N, Roney JM, Ros E, Rossi AM, Rosvick M, Routenburg P, Rozen Y, Runge K, Runolfsson O, Rust DR, Sasaki M, Sbarra C, Schaile AD, Schaile O, Scharf F, Scharff-Hansen P, Schenk P, Schmitt B, Schröder M, Schultz-Coulon HC, Schütz P, Schulz M, Schwick C, Schwiening J, Scott WG, Settles M, Shears TG, Shen BC, Shepherd-Themistocleous CH, Sherwood P, Siroli GP, Skillman A, Skuja A, Smith AM, Smith TJ, Snow GA, Sobie R, Söldner-Rembold S, Springer RW, Sproston M, Stahl A, Starks M, Stegmann C, Stephens K, Steuerer J, Stockhausen B, Strom D, Szymanski P, Tafirout R, Takeda H, Takeshita T, Taras P, Tarem S, Tecchio M, Teixeira-Dias P, Tesch N, Thomson MA, Tousignant O, Towers S, Tscheulin M, Tsukamoto T, Turcot AS, Turner-Watson MF, Utzat P, Kooten R, Vasseur G, Vikas P, Vincter M, Wagner A, Wagner DL, Ward CP, Ward DR, Ward JJ, Watkins PM, Watson AT, Watson NK, Weber P, Wells PS, Wermes N, Wilkens B, Wilson GW, Wilson JA, Winterer VH, Wlodek T, Wolf G, Wotton S, Wyatt TR, Yeaman A, Yekutieli G, Yurko M, Zacek V, Zeuner W, Zorn GT. The production of neutral kaons in Z0 decays and their Bose-Einstein correlations. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf01624582] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Akers R, Alexander G, Allison J, Ametewee K, Anderson KJ, Arcelli S, Asai S, Astbury A, Axen D, Azuelos G, Ball AH, Barberio E, Barlow RJ, Bartoldus R, Batley JR, Beaudoin G, Beck A, Beck GA, Beeston C, Behnke T, Bell KW, Bella G, Bentvelsen S, Berlich P, Bethke S, Biebel O, Bloodworth IJ, Bock P, Bock HM, Boutemeur M, Braibant S, Bright-Thomas P, Brown RM, Buijs A, Burckhart HJ, B�rgin R, Burgard C, Capdevielle N, Capiluppi P, Carnegie RK, Carter AA, Carter JR, Chang CY, Charlesworth C, Charlton DG, Chu SL, Clarke PEL, Clayton JC, Clowes SG, Cohen I, Conboy JE, Cuffiani M, Dado S, Dallapiccola C, Dallavalle GM, Darling C, Jong S, Pozo LA, Deng H, Dittmar M, Dixit MS, Silva E, Duboscq JE, Duchovni E, Duckeck G, Duerdoth IP, Dunwoody UC, Elcombe PA, Estabrooks PG, Etzion E, Evans HG, Fabbri F, Fabbro B, Fanti M, Fath P, Fierro M, Fincke-Keeler M, Fischer HM, Fischer P, Folman R, Fong DG, Foucher M, Fukui H, F�rtjes A, Gagnon P, Gaidot A, Gary JW, Gascon J, Geddes NI, Geich-Gimbel C, Gensler SW, Gentit FX, Geralis T, Giacomelli G, Giacomelli P, Giacomelli R, Gibson V, Gibson WR, Gillies JD, Goldberg J, Gingrich DM, Goodrick MJ, Gorn W, Grandi C, Gross E, Hagemann J, Hanson GG, Hansroul M, Hargrove CK, Hart PA, Hauschild M, Hawkes CM, Heflin E, Hemingway RJ, Herten G, Heuer RD, Hill JC, Hillier SJ, Hilse T, Hobson PR, Hochman D, H�cker A, Homer RJ, Honma AK, Howard R, Hughes-Jones RE, Igo-Kemenes P, Imrie DC, Jawahery A, Jeffreys PW, Jeremie H, Jimack M, Jones M, Jones RWL, Jovanovic P, Jui C, Karlen D, Kanzaki J, Kawagoe K, Kawamoto T, Keeler RK, Kellogg RG, Kennedy BW, King B, King J, Kirk J, Kluth S, Kobayashi T, Kobel M, Koetke DS, Kokott TP, Komamiya S, Kowalewski R, Kress T, Krieger P, Krogh J, Kyberd P, Lafferty GD, Lafoux H, Lahmann R, Lai WP, Lauber J, Layter JG, Leblanc P, Du P, Lee AM, Lefebvre E, Lellouch D, Leroy C, Letts J, Levinson L, Li Z, Liu F, Lloyd SL, Loebinger FK, Long GD, Lorazo B, Losty MJ, Lou XC, Ludwig J, Luig A, Mannelli M, Marcellini S, Markus C, Martin AJ, Martin JP, Mashimo T, Matthews W, M�ttig P, Maur U, McKenna J, McMahon TJ, McNab AI, Meijers F, Merritt FS, Mes H, Michelini A, Middleton RP, Mikenberg G, Miller DJ, Mir R, Mohr W, Montanari A, Mori T, Morii M, M�ller U, Nellen B, Nijjhar B, O'Neale SW, Oakham FG, Odorici F, Ogren HO, Oram CJ, Oreglia MJ, Orito S, Pansart JP, Patrick GN, Pearce MJ, Phillips PD, Pilcher JE, Pinfold J, Pitman D, Plane DE, Poffenberger P, Poli B, Posthaus A, Pritchard TW, Przysiezniak H, Redmond MW, Rees DL, Rigby D, Rison M, Robins SA, Robinson D, Rodning N, Roney JM, Ros E, Rossi AM, Rosvick M, Routenburg P, Rozen Y, Runge K, Runolfsson O, Rust DR, Sasaki M, Sbarra C, Schaile AD, Schaile O, Scharf F, Scharff-Hansen P, Schenk P, Schmitt B, Schr�der M, Schultz-Coulon HC, Sch�tz P, Schulz M, Schwick C, Schwiening J, Scott WG, Settles M, Shears TG, Shen BC, Shepherd-Themistocleous CH, Sherwood P, Siroli GP, Skillman A, Skuja A, Smith AM, Smith TJ, Snow GA, Sobie R, S�ldner-Rembold S, Springer RW, Sproston M, Stahl A, Starks M, Stegmann C, Stephens K, Steuerer J, Stockhausen B, Strom D, Szymanski P, Tafirout R, Takeda H, Takeshita T, Taras P, Tarem S, Tecchio M, Teixeira-Dias P, Tesch N, Thomson MA, Tousignant O, Towers S, Tscheulin M, Tsukamoto T, Turcot A, Turner-Watson MF, Utzat P, Kooten R, Vasseur G, Vikas P, Vincter M, Wagner A, Wagner DL, Ward CP, Ward DR, Ward JJ, Watkins PM, Watson AT, Watson NK, Weber P, Wells PS, Wermes N, Wilkens B, Wilson GW, Wilson JA, Winterer VH, Wlodek T, Wolf G, Wotton S, Wyatt TR, Yeaman A, Yekutieli G, Yurko M, Zacek V, Zeuner W, Zorn GT. Observations of ?-B charge-flavor correlations and resonant B? and BK production. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf01496577] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Akers R, Alexander G, Allison J, Ametewee K, Anderson KJ, Arcelli S, Asai S, Axen D, Azuelos G, Ball AH, Barberio E, Barlow RJ, Bartoldus R, Batley JR, Beaudoin G, Beck A, Beck GA, Beeston C, Behnke T, Bell KW, Bella G, Bentvelsen S, Berlich P, Bethke S, Biebel O, Bloodworth IJ, Bock P, Bosch HM, Boutemeur M, Braibant S, Bright-Thomas P, Brown RM, Buijs A, Burckhart HJ, Bürgin R, Burgard C, Capdevielle N, Capiluppi P, Carnegie RK, Carter AA, Carter JR, Chang CY, Charlesworth C, Charlton DG, Chu SL, Clarke PEL, Clayton JC, Clowes SG, Cohen I, Conboy JE, Cooke OC, Cuffiani M, Dado S, Dallapiccola C, Dallavalle GM, Darling C, Jong S, Pozo LA, Deng H, Diumar M, Dixit MS, Couto e Silva E, Duboscq JE, Duchovni E, Duckeck G, Duerdoth IP, Dunwoody UC, Edwards JEG, Elcombe PA, Estabrooks PG, Etzion E, Evans HG, Fabbri F, Fabbro B, Fanti M, Fath P, Fierro M, Fincke-Keeler M, Fischer HM, Fischer P, Folman R, Fong DG, Foucher M, Fukui H, Fürtjes A, Gagnon P, Gaidot A, Gary JW, Gascon J, Geddes NI, Geich-Gimbel C, Gensler SW, Gentit EX, Geralis T, Giacomelli G, Giacomelli P, Giacomelli R, Gibson V, Gibson WR, Gillies JD, Goldberg J, Gingrich DM, Goodrick MJ, Gorn W, Grandi C, Gross E, Hagemann J, Hanson GG, Hausroul M, Hargrove CK, Hart PA, Hauschild M, Hawkes CM, Heflin E, Hemingway RJ, Herten G, Heuer RD, Hill JC, Hillier SJ, Hilse T, Hobson PR, Hochman D, Homer RJ, Honma AK, Howard R, Hughes-Jones RE, Igo-Kemenes P, Imrie DC, Jawahery A, Jeffreys PW, Jeremie H, Jimack M, Jones M, Jones RWL, Jovanovic P, Jui C, Karlen D, Kanzaki J, Kawagoe K, Kawamoto T, Keeler RK, Kellogg RG, Kennedy BW, King B, King J, Kirk J, Kluth S, Kobayashi T, Kobel M, Koetke DS, Kokott TP, Komamiya S, Kowalewski R, Kress T, Krieger P, Krogh J, Kyberd P, Lafferty GD, Lafoux H, Lahmann R, Lai WP, Lauber J, Layter JG, Leblanc P, Du P, Lee AM, Lefebvre E, Lellouch D, Leroy C, Letts J, Levinson L, Li Z, Lloyd SL, Loebinger FK, Long GD, Lorazo B, Losty MJ, Lou XC, Ludwig J, Luig A, Mannelli M, Marcellini S, Markus C, Martin AJ, Martin JP, Mashimo T, Matthews W, Mättig P, Maur U, McKenna J, McMahon TJ, McNab AI, Meijers F, Merritt FS, Mes H, Michelini A, Middleton RP, Mikenberg G, Miller DJ, Mir R, Mohr W, Montanari A, Mori I, Morii M, Müller U, Nellen B, Nijjhar B, O'Neale SW, Oakham FG, Odorici F, Ogren HO, Oldershaw NJ, Oram CJ, Oreglia MJ, Orito S, Pansart JP, Patrick GN, Pearce MJ, Phillips PD, Pilcher JE, Pinfold J, Plane DE, Poffenberger P, Poli B, Posthaus A, Pritchard TW, Przysiezniak H, Redmond MW, Rees DL, Rigby D, Rison MG, Robins SA, Robinson D, Rodning N, Roney JM, Ros E, Rossi AM, Rosvick M, Routenburg P, Rozen Y, Runge K, Runolfsson O, Rust DR, Sasaki M, Sbarra C, Schaile AD, Schaile O, Scharf F, Scharff-Hansen P, Schenk P, Schmitt B, Schröder M, Schultz-Coulon HC, Schütz P, Schulz M, Schwick C, Schwiening J, Scott WG, Settles M, Shears TG, Shen BC, Shepherd-Themistocleous CH, Sherwood P, Siroli GP, Skillman A, Skuja A, Smith AM, Smith TJ, Snow GA, Sobie R, Söldner-Rembold S, Springer RW, Sproston M, Stahl A, Starks M, Stegmann C, Stephens K, Steuerer J, Stockhausen B, Strom D, Szymanski P, Tafirout R, Takeda H, Takeshita T, Taras P, Tarem S, Tecchio M, Teixeira-Dias P, Tesch N, Thomson MA, Tousignant O, Towers S, Tscheulin M, Tsukamoto T, Turcot A, Turner-Watson MF, Utzat P, Kooten R, Vasseur G, Vikas P, Vincter M, Wagner A, Wagner DL, Ward CP, Ward DR, Ward JJ, Watkins PM, Watson AT, Watson NK, Weber P, Wells PS, Wermes N, Wilkens B, Wilson GW, Wilson JA, Winterer VH, Wlodek T, Wolf G, Wotton S, Wyatt TR, Yeaman A, Yekutieli G, Yurko M, Zacek V, Zeuner W, Zorn GT. A study of charm meson production in semileptonic B decays. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf01564821] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Akers R, Alexander G, Allison J, Anderson KJ, Arcelli S, Asai S, Astbury A, Axen D, Azuelos G, Ball AH, Barlow RJ, Barnett S, Bartoldus R, Batley JR, Beaudoin G, Beck A, Beck GA, Becker J, Beeston C, Behnke T, Bell KW, Bella G, Bentkowski P, Berlich P, Bethke S, Biebel O, Bloodworth IJ, Bock P, Boden B, Bosch HM, Boutemeur M, Bright-Thomas P, Brown RM, Buijs A, Burckhart HJ, Burgard C, Capiluppi P, Carnegie RK, Carter AA, Carter JR, Chang CY, Charlesworth C, Charlton DG, Chu SL, Clarke PEL, Clayton JC, Cohen I, Conboy JE, Cooper M, Coupland M, Cuffiani M, Dado S, Dallapiccola C, Dallavalle GM, Darling C, Jong S, Pozo LA, Deng H, Dittmar M, Dixit MS, Couto e Silva E, Duboscq JE, Duchovni E, Duckeck G, Duerdoth IP, Dumas DJP, Elcombe PA, Estabrooks PG, Etzion E, Evans HG, Fabbri F, Fabbro B, Fierro M, Fincke-Keeler M, Fischer HM, Folman R, Fong DG, Foucher M, Fukui H, F�rtjes A, Gaidot A, Gary JW, Gascon J, Geddes NI, Geich-Gimbel C, Gensler SW, Gentit FX, Geralis T, Giacomelli G, Giacomelli P, Giacomelli R, Gibson V, Gibson WR, Gillies JD, Goldberg J, Gingrich DM, Goodrick MJ, Gorn W, Grandi C, Grant FC, Hagemann J, Hanson GG, Hansroul M, Hargrove CK, narrison PF, Hart J, Hart PA, Hattersley PM, Hauschild M, Hawkes CM, Heflin E, Hemingway RJ, Herten G, Heuer RD, Hill JC, Hillier SJ, Hilse T, Hinshaw DA, Hobson PR, Hochman D, Homer RJ, Honma AK, Hughes-Jones RE, Humbert R, Igo-Kemenes P, Ihssen H, Imrie DC, Jawahery A, Jeffreys PW, Jeremie H, Jimack M, Jones M, Jones RWL, Jovanovic P, Jui C, Karlen D, Kawagoe K, Kawamoto T, Keeler RK, Kellogg RG, Kennedy BW, King J, Kluth S, Kobayashi T, Kobel M, Koetke DS, Kokott TP, Komamiya S, Kowalewski R, Howard R, Krogh J, Kroll J, Kyberd P, Lafferty GD, Lafoux H, Lahmann R, Lauber J, Layter JG, Leblanc P, Du P, Lee AM, Lefebvre E, Lehto MH, Lellouch D, Leroy C, Letts J, Levinson L, Li Z, Lloyd SL, Loebinger FK, Long GD, Lorazo B, Losty MJ, Lou XC, Ludwig J, Luig A, Mannelli M, Marcellini S, Markus C, Martin AJ, Martin JP, Mashimo T, M�ttig P, Maur U, McKenna J, McMahon TJ, McNutt JR, Meijers F, Merritt FS, Mes H, Michelini A, Middleton RP, Mikenberg G, Mildenberger J, Miller DJ, Mir R, Mohr W, Moisan C, Montanari A, Mori T, Morii M, M�ller U, Nellen B, Nguyen HH, O'Neale SW, Oakham FG, Odorici F, Ogren HO, Oram CJ, Oreglia MJ, Orito S, Pansart JP, Paschievici P, Patrick GN, Pearce MJ, Pfister P, Pilcher JE, Pinfold J, Pitman D, Plane DE, Poffenberger P, Poli B, Pritchard TW, Przysiezniak H, Quast G, Redmond MW, Rees DL, Richards GE, Rison M, Robins SA, Robinson D, Rollnik A, Roney JM, Ros E, Rossberg S, Rossi AM, Rosvick M, Routenburg P, Runge K, Runolfsson O, Rust DR, Sasaki M, Sbarra C, Schaile AD, Schaile O, Scharf F, Scharff-Hansen P, Schenk P, Schmitt B, Schmitt H, Schr�der M, Schultz-Coulon HC, Sch�tz P, Schulz M, Schwick C, Schwiening J, Scott WG, Settles M, Shears TG, Shen BC, Shepherd-Themistocleous CH, Sherwood P, Siroli GP, Skillman A, Skuja A, Smith AM, Smith TJ, Snow GA, Sobie R, Springer RW, Sproston M, Stahl A, Stegmann C, Stephens K, Steuerer J, Str�hmer R, Strom D, Takeda H, Tarem S, Tecchio M, Teixeira-Dias P, Tesch N, Thomson MA, Torrente-Lujan E, Towers S, Tresilian NJ, Tsukamoto T, Turner MF, plas D, Kooten R, VanDalen GJ, Vasseur G, Vincter M, Wagner A, Wagner DL, Wahl C, Ward CP, Ward DR, Ward JJ, Watkins PM, Watson AT, Watson NK, Weber P, Wells PS, Wermes N, Wilkens B, Wilson GW, Wilson JA, Winterer VH, Wlodek T, Wolf G, Wotton S, Wyatt TR, Yaari R, Yeaman A, Yekutieli G, Yurko M, Zeuner W, Zorn GT. QCD studies using a cone-based jet finding algorithm fore + e ? collisons at LEP. ACTA ACUST UNITED AC 1994. [DOI: 10.1007/bf01411011] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Post F, Doster W, Karvounis G, Settles M. Structural relaxation and nonexponential kinetics of CO-binding to horse myoglobin. Multiple flash photolysis experiments. Biophys J 1993; 64:1833-42. [PMID: 8369410 PMCID: PMC1262517 DOI: 10.1016/s0006-3495(93)81554-6] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.9] [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: 01/30/2023] Open
Abstract
The geminate recombination kinetics of CO-myoglobin strongly deviates from single exponential behavior in contrast to what is expected for unimolecular reactions (1). At low temperatures, this result was attributed to slowly exchanging conformational states which differ substantially in barrier height for ligand binding. Above 160 K the kinetics apparently slow down with temperature increase. Agmon and Hopfield (2) explain this result in terms of structural relaxation perpendicular to the reaction coordinate, which enhances the activation energy. In their model, structural relaxation homogenizes the kinetic response. Recently, Steinbach et al. (3) proposed a relaxation model which conserves the kinetic inhomogeneity. Below we test these conjectures by single and multiple excitation experiments. This method allows for discrimination between parallel (inhomogeneous) and sequential (homogeneous) kinetic schemes. The kinetic anomaly above 160 K is shown to result from a homogeneous, structurally relaxed intermediate. However a second anomaly is found above 210 K concerning the inhomogeneous phase which may indicate either a shift in activation energy or entropy.
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Affiliation(s)
- F Post
- Technische Universität München, Physik-Department E13, Garching, Germany
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Kneller GR, Doster W, Settles M, Cusack S, Smith JC. Methyl group dynamics in the crystalline alanine dipeptide: A combined computer simulation and inelastic neutron scattering analysis. J Chem Phys 1992. [DOI: 10.1063/1.463361] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Settles M, Post F, Müller D, Schulte A, Doster W. Solvent damping of internal processes in myoglobin studied by specific heat spectroscopy and flash photolysis. Biophys Chem 1992; 43:107-16. [PMID: 1498247 DOI: 10.1016/0301-4622(92)80026-2] [Citation(s) in RCA: 17] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We address the question of dynamic coupling between protein and solvent by comparing the enthalpy relaxation of the solvent (75% v/v glycerol-water) to internal ligand binding in myoglobin. When the solvent relaxation is slow compared to intramolecular events we observe decoupling of protein motions from the solvent. In the opposite limit there is a significant contribution of the solvent to internal friction. The solvent enhances the apparent activation energy of transitions in myoglobin. This result is discussed in terms of a generalized Kramer's law involving a dynamic friction coefficient.
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Affiliation(s)
- M Settles
- Technische Universität München, Physik-Department E13, Garching, FRG
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Alexander G, Allison J, Allport PP, Anderson KJ, Arcelli S, Armitage JC, Ashton P, Astbury A, Axen D, Azuelos G, Bahan GA, Baines JTM, Ball AH, Banks J, Barker GJ, Barlow RJ, Batley JR, Beaudoin G, Beck A, Becker J, Behnke T, Bell KW, Bella G, Bethke S, Biebel O, Binder U, Bloodworth IJ, Bock P, Bosch HM, Bougerolle S, Brabson BB, Breuker H, Brown RM, Brun R, Buijs A, Burckhart HJ, Capiluppi P, Carnegie RK, Carter AA, Carter JR, Chang CY, Charlton DG, Chrin JTM, Clarke PEL, Cohen I, Collins WJ, Conboy JE, Cooper M, Couch M, Coupland M, Cuffiani M, Dado S, Dallavalle GM, Jong S, Debu P, Deninno MM, Dieckmann A, Dittmar M, Dixit MS, Duchovni E, Duckeck G, Duerdoth IP, Dumas DJP, Eckerlin G, Elcombe PA, Estabrooks PG, Etzion E, Fabbri F, Fincke-Keeler M, Fischer HM, Fong DG, Fukunaga C, Gaidot A, Ganel O, Gary JW, Gascon J, McGowan RF, Geddes NI, Geich-Gimbel C, Gensler SW, Gentit FX, Giacomelli G, Gibson V, Gibson WR, Gillies JD, Goldberg J, Goodrick MJ, Gorn W, Grandi C, Gross E, Hagemann J, Hanson GG, Hansroul M, Hargrove CK, Harrison PF, Hart J, Hattersley PM, Hauschild M, Hawkes CM, Heflin E, Hemingway RJ, Heuer RD, Hill JC, Hillier SJ, Hinshaw DA, Ho C, Hobbs JD, Hobson PR, Hochman D, Holl B, Homer RJ, Hou SR, Howarth CP, Hughes-Jones RE, Humbert R, Igo-Kemenes P, Ihssen H, Imrie DC, Janissen L, Jawahery A, Jeffreys PW, Jeremie H, Jimack M, Jobes M, Jones RWL, Jovanovic P, Karlen D, Kawagoe K, Kawamoto T, Keeler RK, Kellogg RG, Kennedy BW, Kleinwort C, Klem DE, Kobayashi T, Kokott TP, Komamiya S, Köpke L, Kowalewski R, Kreutzmann H, Krogh J, Kroll J, Kuwano M, Kyberd P, Lafferty GD, Lamarche F, Larson WJ, Layter JG, Du P, Leblanc P, Lee AM, Lehto MH, Lellouch D, Lennert P, Leroy C, Lessard L, Levegrün S, Levinson L, Lloyd SL, Loebinger FK, Lorah JM, Lorazo B, Losty MJ, Lou XC, Ludwig J, Mannelli M, Marcellini S, Maringer G, Martin AJ, Martin JP, Mashimo T, Mättig P, Maur U, McMahon TJ, McNutt JR, Meijers F, Menszner D, Merritt FS, Mes H, Michelini A, Middleton RP, Mikenberg G, Mildenberger J, Miller DJ, Milstene C, Mir R, Mohr W, Moisan C, Montanari A, Mori T, Moss MW, Mouthuy T, Murphy PG, Nellen B, Nguyen HH, Nozaki M, O'Neale SW, O'Neill BP, Oakham FG, Odorici F, Ogg M, Ogren HO, Oh H, Oram CJ, Oreglia MJ, Orito S, Pansart JP, Panzer-Steindel B, Paschievici P, Patrick GN, Pawley SJ, Pfister P, Pilcher JE, Pinfold JL, Plane DE, Poffenberger P, Poli B, Pouladdej A, Prebys E, Pritchard TW, Przysiezniak H, Quast G, Redmond MW, Rees DL, Riles K, Robins SA, Robinson D, Rollnik A, Roney JM, Rossberg S, Rossi AM, Routenburg P, Runge K, Runolfsson O, Rust DR, Sanghera S, Sasaki M, Schaile AD, Schaile O, Schappert W, Scharff-Hansen P, Schenk P, Schmitt H, Schreiber S, Schwarz J, Scott WG, Settles M, Shen BC, Sherwood P, Shypit R, Simon A, Singh P, Siroli GP, Skuja A, Smith AM, Smith TJ, Snow GA, Sobie R, Springer RW, Sproston M, Stephens K, Stier HE, Strom D, Takeda H, Takeshita T, Taras P, Tarem S, Teixeira-Dias P, Thackray NJ, Tsukamoto T, Turner MF, Tysarczyk-Niemeyer G, plas D, Kooten R, Dalen GJ, Vasseur G, Virtue CJ, Wagner A, Wahl C, Walker JP, Ward CP, Ward DR, Watkins PM, Watson AT, Watson NK, Weber M, Weisz S, Wells PS, Wermes N, Weymann M, Whalley MA, Wilson GW, Wilson JA, Wingerter I, Winterer VH, Wood NC, Wotton S, Wyatt TR, Yaari R, Yangh Y, Yekutieli G, Zacharov I, Zeuner W, Zorn GT. Measurement of theZ 0 line shape parameters and the electroweak couplings of charged leptons. ACTA ACUST UNITED AC 1991. [DOI: 10.1007/bf01560437] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ardman B, Sikorski MA, Settles M, Staunton DE. Human immunodeficiency virus type 1-infected individuals make autoantibodies that bind to CD43 on normal thymic lymphocytes. J Exp Med 1990; 172:1151-8. [PMID: 1976735 PMCID: PMC2188598 DOI: 10.1084/jem.172.4.1151] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Sera from human immunodeficiency virus type 1 (HIV-1)-infected and -noninfected individuals were screened for antibodies that could bind to native T cell differentiation antigens. Antibodies that could immunoprecipitate CD43 (sialophorin, leukosialin) from a T cell lymphoma line were detected in sera from 27% of patients, and antibodies that could bind specifically to transfected cells expressing CD43 were detected in 47% of patients. The anti-CD43 antibodies were related to HIV-1 infection in that no patients with other chronic viral infections or systemic lupus erythematosus contained such antibodies in their sera. The anti-CD43 autoantibodies bound to a partially sialylated form of CD43 expressed by normal human thymocytes, but not by normal, circulating T lymphocytes. However, the determinant(s) recognized by the anti-CD43 autoantibodies was present on a large proportion of circulating T lymphocytes, but masked from antibody recognition by sialic acid residues. These results demonstrate that HIV-1 infection is specifically associated with the production of autoantibodies that bind to a native T cell surface antigen.
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Affiliation(s)
- B Ardman
- Department of Medicine, New England Medical Center Hospitals, Boston, Massachusetts 02111
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Ardman B, Mayer K, Bristol J, Ryan M, Settles M, Levy E. Surface immunoglobulin-positive T lymphocytes in HIV-1 infection: relationship to CD4+ lymphocyte depletion. Clin Immunol Immunopathol 1990; 56:249-58. [PMID: 1974180 DOI: 10.1016/0090-1229(90)90146-h] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
T lymphocytes bound to autologous immunoglobulin (surface Ig + T cells) and serum antibodies that bind to allogeneic lymphocytes have been detected in HIV-1-infected individuals, but their significance in the immunopathogenesis of HIV-1 infection is uncertain. We tested peripheral blood from HIV-1-infected individuals to determine if surface Ig+ T cells are specific for HIV-1 infection and are associated with CD4+ lymphocyte depletion. The majority of HIV-1-infected individuals contained substantial numbers of circulating surface Ig+ T cells. The presence of such cells was restricted to seropositive individuals and not related to risk factors associated with the acquisition of HIV-1 infection. Autologous immunoglobulin was detected on both CD4+ and CD8+ cells in all patients tested. Most individuals with surface Ig+ T lymphocytes also had serum anti-T-lymphocyte antibodies. The presence of surface Ig+ T lymphocytes correlated significantly with lower absolute CD4+ lymphocyte counts only in asymptomatic, HIV-1-infected individuals.
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Affiliation(s)
- B Ardman
- Department of Medicine, New England Medical Center Hospitals, Boston, Massachusetts 02111
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Abstract
The nonexponential closed-time distributions observed for ionic channels have been explained recently by quasi-one-dimensional models of structural diffusion (Millhauser, G. L., E. E. Salpeter, and R. E. Oswald. 1988. Proc. Natl. Acad. Sci. USA. 85: 1503-1507; Condat, C. A., and J. Jäckle. 1989. Biophys. J. 55: 915-925; Levitt, D. G. 1989. Biophys. J. 55: 489-498). We generalize this treatment by allowing for more complex trajectories using percolation theory. We assume that the gating transition depends on marginally connected conformational states leading to the observed spread in time scales.
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Affiliation(s)
- W Doster
- Technische Universität München, Physik-Department E13, Federal Republic of Germany
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