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Weber MA, Essig M, Kauczor HU. Gliome. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Zahn R, Vogt A, Zeymer U, Gitt AK, Seidl K, Gottwik M, Weber MA, Niederer W, Mödl B, Engel HJ, Tebbe U, Senges J. In-hospital time to treatment of patients with acute ST elevation myocardial infarction treated with primary angioplasty: determinants and outcome. Results from the registry of percutaneous coronary interventions in acute myocardial infarction of the Arbeitsgemeinschaft Leitender Kardiologischer Krankenhausarzte. Heart 2005; 91:1041-6. [PMID: 16020592 PMCID: PMC1769038 DOI: 10.1136/hrt.2004.045336] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
OBJECTIVE To determine the predictors of time between presentation and primary angioplasty and the influence of this delay time on in-hospital mortality in clinical practice. DESIGN Analysis of data from the registry of percutaneous coronary interventions in acute myocardial infarction of the Arbeitsgemeinschaft Leitender Kardiologischer Krankenhausärzte (ALKK). PATIENTS Data of 4815 patients registered at 80 hospitals between 1994 and 2000 were analysed. RESULTS Mean age of the patients was 61.4 (12.5) years. Cardiogenic shock was present in 14.1%. Mean time from admission to primary angioplasty ("door to angiography" time) was 83 (122) minutes. Logistic regression analysis showed the presence of a bundle branch block (odds ratio (OR) 1.95, 95% confidence interval (CI) 1.15 to 3.29), prior coronary artery bypass grafting (OR 1.67, 95% CI 1.08 to 2.59), pre-hospital delay > 3 hours (OR 1.61, 95% CI 1.37 to 1.89), and female sex (OR 1.21, 95% CI 1.01 to 1.45) to be independently associated with longer door to angiography times, whereas a higher hospital volume of performing primary angioplasty (OR 0.53, 95% CI 0.46 to 0.62) and the year of the investigation (OR 0.96, 95% CI 0.92 to 1.00) were independently associated with shorter door to angiography times. Independent predictors of in-hospital mortality were cardiogenic shock (41.6% v 4.0% without cardiogenic shock, p < 0.0001), technical success (29.2% with TIMI (thrombolysis in myocardial infarction) flow < 3 v 6.5% with TIMI flow 3, p < 0.0001), age (16.5% > or = 70 years v 6.6% < 70, p < 0.0001), three vessel disease (16.5% v 6.8% with < 3 vessel disease, p < 0.0001), anterior location of infarction (12% v 7.4% without anterior infarction, p < 0.0001), year of inclusion (adjusted OR 0.92 per year, p = 0.011), and volume of primary angioplasty at the hospital (11% for < 20 angioplasty procedures/year v 8.3% for > or = 20/year, p = 0.027) but not the door to angiography time (adjusted OR 1.14 per tertile, p = 0.397). CONCLUSIONS In current clinical practice in Germany median door to angiography time is quite short (83 (122) minutes). Some patients and hospital factors are independently associated with a longer door to angiography time. Within the observed short in-hospital delays door to angiography time did not influence in-hospital mortality. However, efforts to keep them as short as possible should be continued.
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Weber MA, Risdon RA, Malone M, Duffy PG, Sebire NJ. Isolated unilateral tuberous sclerosis-associated renal cystic disease in a neonate. Fetal Pediatr Pathol 2005; 24:267-75. [PMID: 16396832 DOI: 10.1080/15227950500405700] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
We present a male infant with antenatally detected, focal, unilateral apparently isolated renal cystic disease with morphological features of renal involvement in tuberous sclerosis. Only one previous case with similar presentation has been described. Most affected children present with either diffuse bilateral renal cystic disease or extrarenal manifestations. The major genes involved in tuberous sclerosis are now well described, and early onset of severe renal cystic disease in affected children often is related to the presence of a contiguous gene deletion syndrome involving TSC2 and PKD1 on chromosome 16.
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Weber MA, Nielles-Vallespin S, Huttner HB, Meinck HM, Wöhrle J, Lehmann-Horn F, Kauczor HU, Essig M. Die 23Na-Magnetresonanztomographie visualisiert die intrazelluläre Natriumakkumulation bei Patienten mit der hereditären Natriumkanalmyopathie-Paramyotonia congenita Eulenburg. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wegs H, Hertel R, Weber MA, Kauczor HU, Essig M. Quantifizierung von zerebralem Blutvolumen und Blutfluss mit der dynamischen suszeptibilitätsgewichteten Magnetresonanz-Tomographie (MRT). ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-868279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Weber MA, Zoubaa S, Jüttler E, Huttner HB, Geletneky K, Lichy M, Kauczor HU, Essig M. Vergleich der spektroskopischen, der perfusionsgewichteten und der T1-gewichteten dynamischen MRT bei Hirntumoren mit der histologisch bestimmten Gefäßdichte und der Proliferationsaktivität. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Hertel R, Heiß J, Weber MA, Baudendistel K, Schröder L, Kauczor HU, Essig M. Phosphor-Magnetresonanz-Spektroskopie (31P-MRS) zur Bestimmung des Energiestoffwechsels am Muskel. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-868273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Heiß J, Wegs H, Weber MA, Baudendistel K, Kauczor HU, Essig M. Pharmakokinetische Nachverarbeitung von kontrastverstärkten, T1-gewichteten, dynamischen Datensätzen in der Magnetresonanz-Tomographie (MRT). ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-868272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Giesel FL, Wüstenberg T, Bongers A, Weber MA, Zechmann C, Baudendistel KT, von Tengg-Kobligk H, Hahn HK, Essig M, Kauczor HU. MR-basierte Methoden der funktionellen Bildgebung des zentralen Nervensystems. ROFO-FORTSCHR RONTG 2005; 177:714-30. [PMID: 15871087 DOI: 10.1055/s-2005-858108] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This review presents the basic principles of functional imaging of the central nervous system utilizing magnetic resonance imaging. The focus is set on visualization of different functional aspects of the brain and related pathologies. Additionally, clinical cases are presented to illustrate the applications of functional imaging techniques in the clinical setting. The relevant physics and physiology of contrast-enhanced and non-contrast-enhanced methods are discussed. The two main functional MR techniques requiring contrast-enhancement are dynamic T1- and T2*-MRI to image perfusion. Based on different pharmacokinetic models of contrast enhancement diagnostic applications for neurology and radio-oncology are discussed. The functional non-contrast enhanced imaging techniques are based on "blood oxygenation level dependent (BOLD)-fMRI and arterial spin labeling (ASL) technique. They have gained clinical impact particularly in the fields of psychiatry and neurosurgery.
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Volpe M, Ruilope LM, McInnes GT, Waeber B, Weber MA. Angiotensin-II receptor blockers: benefits beyond blood pressure reduction? J Hum Hypertens 2005; 19:331-9. [PMID: 15744333 DOI: 10.1038/sj.jhh.1001831] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Effective treatment of hypertension is essential to reduce the risk of renal and cardiovascular (CV) morbidity. The risks associated with hypertension are modulated by the presence of other factors. This has prompted the quest for agents that have benefits beyond blood pressure (BP) lowering. The angiotensin II receptor blocker (ARB) class of antihypertensive agents represents an important addition to the therapeutic options for elevated BP. Their ability to control BP is equivalent to existing therapies and there is a considerable and mounting evidence-base for their ability to reduce hypertension-associated target organ damage and comorbidities. Studies show that ARBs have clinical benefits across the spectrum of disease severity. In particular, recent large studies have demonstrated that these benefits extend to patients with conditions predisposing to CV events, such as diabetes, left ventricular hypertrophy and microalbuminuria, and where risk factors coexist. Data from these studies suggest that the CV protective effects of ARBs are at least, in part, independent from the BP lowering action. In addition, ARBs are extremely well tolerated, and strong evidence suggests that compliance with therapy--a key factor in achieving adequate BP control--with ARBs is higher than with other antihypertensive agents. Furthermore, flexible dosing and good tolerability profile mean that, where necessary, ARBs can be combined with other classes of antihypertensive agents to achieve adequate BP control and reduce the risk of hypertension-associated morbidity.
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Huttner HB, Nielles-Vallespin S, Meinck HM, Schad L, Wöhrle J, Essig M, Weber MA. 23Na-Magnetresonanztomographie (MRT) bei Patienten mit Paramyotonia congenita (Eulenburg). AKTUELLE NEUROLOGIE 2004. [DOI: 10.1055/s-2004-833427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Weber MA, Krix M, Huttner H, Meyding-Lamadé U, Fiehn C, Jappe U, Kauczor HU, Delorme S. Messung der Skelettmuskelperfusion mittels intermittierender, kontrastmittelverstärkter Sonographie bei Patienten mit Myositisverdacht – erste Ergebnisse. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-828163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Weber MA, Krix M, Huttner HB, Jappe U, Meyding-Lamadé U, Fiehn C, Schwab S, Essig M, Kauczor HU, Delorme S. Diagnostik von Myositiden mittels intermittierender, kontrastmittelverstärkter Sonographie - erste Ergebnisse. AKTUELLE NEUROLOGIE 2004. [DOI: 10.1055/s-2004-833181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Weber MA, Jüttler E, Huttner H, Geletneky K, Kroll A, Zoubaa S, Kauczor HU, Essig M. Arterial-Spin Labeling MR-Perfusionsbildgebung in der Differenzialdiagnostik zerebraler Raumforderungen – Erste Ergebnisse. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Weber MA. The JNC 7 report: challenges and dilemmas in writing guidelines. J Clin Hypertens (Greenwich) 2003; 5:282-6. [PMID: 12939570 PMCID: PMC8099362 DOI: 10.1111/j.1524-6175.2003.02615.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Giesel FL, Hempel A, Schönknecht P, Wüstenberg T, Weber MA, Schröder J, Essig M. [Functional magnetic resonance imaging and dementia]. Radiologe 2003; 43:558-61. [PMID: 12955219 DOI: 10.1007/s00117-003-0918-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Currently, different cerebral neuroimaging methods are being applied to varying questions in the diagnosis of dementia. In patients with manifest Alzheimer's disease a reduction of cortical perfusion and metabolism in temporal and temporoparietal regions has been demonstrated when compared to healthy controls on a diversity of memory tasks. Since differing levels of performance and varying degrees of cortical atrophy may influence functional results considerably, an understanding of the processes associated with normal ageing is perceived as prerequisite for studies applying functional neuroimaging. The integration of knowledge concerning neuropsychological and neurobiological alterations associated with healthy ageing allows hypotheses for the differentiation of pathological ageing processes to be phrased. In this connection non-invasive methods such as fMRI and ASL are of increasing importance.
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Hallscheidt P, Weber MA, Schenk JP, Riedasch G. [Magnetic resonance tomography of xanthogranulomatous pyelonephritis. Epidemiology, pathogenesis and symptoms]. Urologe A 2002; 41:577-82. [PMID: 12524945 DOI: 10.1007/s00120-002-0231-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Xanthogranulomatous pyelonephritis (XGP) is a rare chronic infection of the kidney. In this overview article we reevaluated the magnetic resonance imaging (MRI) findings of our four patients with histologically proven XGP and correlated them with the CT and ultrasound findings described in the literature. Additionally, we give an overview of the pathogenesis and epidemiology. The following criteria were found in MRI: hydronephrosis and/or urethral stricture, vesicoureteral reflux or neurogenic bladder depletion disorders, and calculus as the origin of urinary obstruction. Moreover, in contrast to normal pyelonephritis, XGP is accompanied by fatty deposits in the peripelvic parenchyma, which demonstrate contrast enhancement and form the typical so-called bear paw sign. As XGP is often accompanied by severe kidney failure, contrast-enhanced CT with nephrotoxic contrast agents should be avoided and MRI should be performed instead. Because of proven reduced nephrotoxicity of gadolinium chelates, MRI seems to be superior to CT in patients with suspected XGP. Essential for the correct diagnosis is consideration of the complete medical history including recurrent pyelonephritis to avoid malpractice.
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Weber MA, Steiner T, Fiebach J. [Unusual cause of acute impairment of consciousness. Decompensated hydrocephalus caused by blockage of the foramini Monroi due to enlarged basilar artery]. Radiologe 2002; 42:833-6. [PMID: 12524716 DOI: 10.1007/s00117-002-0744-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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69
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Weber MA, Lichy M, Reimer P. [Space-occupying lesion in the area of the 3rd ventricle. Cerebral pseudocystic metastasis of a neuroendocrine carcinoma of unknown primary tumor]. Radiologe 2002; 42:392-6. [PMID: 12132128 DOI: 10.1007/s00117-002-0739-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Weber MA, Delorme S. [Routine after-care 16 years after left adrenalectomy for adrenal cortex carcinoma. Late pulmonary metastasis of resected adrenal cortex carcinoma]. Radiologe 2002; 42:231-4. [PMID: 11963241 DOI: 10.1007/s001170100663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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71
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Weber MA, Groos S, Aumüller G, Konrad L. Post-natal development of the rat testis: steroid hormone receptor distribution and extracellular matrix deposition. Andrologia 2002; 34:41-54. [PMID: 11996181 DOI: 10.1046/j.1439-0272.2002.00465.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The control of testicular development and differentiation depends on hormones and a variety of cell-cell interactions mediated mainly by paracrine factors. In the second and third weeks of post-natal development important changes take place in the rat testis, e.g. the tubular lumen starts to open on post-natal day 10, the blood-testis barrier starts to form on day 15, and Sertoli cell proliferation ceases on day 15. In the present study the expression in different testicular compartments of the androgen receptor (AR), progesterone receptor (PR), and extracellular matrix proteins such as laminin, entactin-1 (nidogen-1) and fibronectin, during post-natal development was examined using immunohistochemistry and semiquantitative image analysis. An intratubular AR peak on days 14-17, an increase in intratubular PR expression on days 14-16, and an increase in peritubular entactin-1 expression during the second and third weeks post-partum are demonstrated. These results suggest that a variety of changes occur at the cellular level during this period when certain milestones of testicular development occur, substantiating the hypothesis of a particular role for paracrine interactions during the development of the rat testis.
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Meredith PA, Weber MA. Angiotensin II receptor antagonists: new paradigms in the treatment of hypertension. Introduction. BLOOD PRESSURE. SUPPLEMENT 2002; 1:4-5. [PMID: 11333012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Weber MA, Wasser K, Schwenger V, Hallscheidt P, Nahm AM, Delorme S. [Palpable resistance in the right renal area. Xanthogranulomatous pyelonephritis with fistulization in the colon ascendens and M. psoas major]. Radiologe 2002; 42:46-50. [PMID: 11930541 DOI: 10.1007/s117-002-8117-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
Vasopeptidase inhibitors are a new class of cardiovascular drug that simultaneously inhibit both neutral endopeptidase and angiotensin-converting enzyme (ACE). They increase the availability of peptides that have vasodilatory and other vascular effects; they also inhibit production of angiotensin II. In animal models vasopeptidase inhibitors decrease blood pressure in low, medium, and high renin forms of hypertension, and they also appear to confer benefits in models of heart failure and ischaemic heart disease. Studies in human hypertension show that these agents are effective in decreasing blood pressure regardless of race or age. Experience with omapatrilat, the most clinically advanced of these drugs, has shown it to be more effective than currently available ACE inhibitors or other widely used antihypertensive agents. Studies with omapatrilat in congestive heart failure have shown beneficial effects on haemodynamics and symptoms. The vasopeptidase inhibitors appear to have safety profiles similar to ACE inhibitors, though the frequency of side-effects such as angio-oedema and cough remains to be established. Large trials with clinical endpoints, some already in progress, are needed to establish the place of this class of drug beside that of established therapies in conditions such as hypertension, heart failure, ischaemic heart disease, and nephropathy.
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Moser M, Pickering TG, Weber MA. Roundtable Discussion: Blood pressure lowering by any means, or do specific medications make a difference? J Clin Hypertens (Greenwich) 2001; 3:369-75. [PMID: 11951864 PMCID: PMC8099350 DOI: 10.1111/j.1524-6175.2001.00494.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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