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Kühl H, Eggebrecht H, Veit P, Rosenbaum S, Antoch G, Erbel R, Barkhausen J. Radiologische Diagnostik bei akutem Aortensyndrom – Was bringt die kombinierte Bildgebung mit PET/CT? ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940896] [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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Vogt FM, Antoch G, Veit P, Blechschmid N, Bockisch A, Forsting M, Kühl H. Gewebeveränderungen in der Randzone der Nekrose nach Radiofrequenzablation der Leber: Darstellung mit unterschiedlichen bildgebenden Verfahren. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940564] [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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53
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Bockisch A, Müller S, Freudenberg L, Forsting M, Kühl H, Antoch G. PET und PET/CT im Therapiemonitoring von soliden Tumoren und Lymphomen. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940492] [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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54
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Antoch G, Veit P, Kühle C, Beyer T, Stergar H, Börsch G, Barkhausen J, Bockisch A, Kühl H. Genauigkeit der PET/CT-Kolonographie bei der Beurteilung kolorektaler Tumore. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940910] [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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55
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Kühl H, Antoch G, Rosenbaum S, Veit P, Stergar H, Bockisch A, Barkhausen J. Postinterventionelle Kontrolle des Ablationserfolges von malignen Lebertumoren: Vergleich von PET/CT und MRI. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940563] [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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56
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Stattaus J, Kühl H, Antoch G, Schroeder T, Baba HA, Barkhausen J. CT-gesteuerte Stanzbiopsie kleiner Leberläsionen: Einfluss von Abgrenzbarkeit und Nadelartefakten auf die diagnostische Genauigkeit. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940958] [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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57
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Becker M, Bilke E, Kühl H, Katoh M, Kramann R, Franke A, Bücker A, Hanrath P, Hoffmann R. Analysis of myocardial deformation based on pixel tracking in two dimensional echocardiographic images enables quantitative assessment of regional left ventricular function. Heart 2005; 92:1102-8. [PMID: 16387826 PMCID: PMC1861114 DOI: 10.1136/hrt.2005.077107] [Citation(s) in RCA: 179] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE To evaluate whether myocardial strain and strain rate calculated from two dimensional echocardiography by automatic frame-by-frame tracking of natural acoustic markers enables objective description of regional left ventricular (LV) function. METHODS In 64 patients parasternal two dimensional echocardiographic views at the apical, mid-ventricular and basal levels were obtained. An automatic frame-by-frame tracking system of natural acoustic echocardiographic markers was used to calculate radial strain, circumferential strain, radial strain rate and circumferential strain rate for each LV segment in a 16 segment model. Cardiac magnetic resonance imaging (cMRI) was performed to define segmental LV function as normokinetic, hypokinetic or akinetic. RESULTS Image quality was sufficient for adequate strain and strain-rate analysis from two dimensional echocardiographic images obtained from parasternal views in 88% of segments. Obtained radial strain data were highly reproducible and analysis was affected by only small intraobserver (mean 4.4 (SD 1.6)%) and interobserver variabilities (7.3 (2.5)%). Each of the analysed strain and strain-rate parameters was significantly different between segments defined as normokinetic, hypokinetic or akinetic by cMRI (radial strain 36.8 (10.5)%, 24.1 (7.5)% and 13.4 (4.8)%, respectively, p < 0.001). Peak systolic radial strain enabled detection of hypokinesis or akinesis with a sensitivity of 83.5% and a specificity of 83.5% (cut off value 29.1%, receiver operating characteristic (ROC) curve area 0.905, 95% CI 0.883 to 0.923). Peak systolic radial strain analysis also enabled detection of akinesis versus hypokinesis with a sensitivity of 82.7% and a specificity of 94.5% (cut off value 21.0%, ROC curve area 0.946). Peak systolic radial strain-rate analysis was less accurate than peak systolic radial strain analysis to detect cMRI-defined segmental function abnormalities. The accuracy of peak systolic circumferential strain and strain rate was similar to that of corresponding radial parameters. CONCLUSIONS Frame-by-frame tracking of acoustic markers in two dimensional echocardiographic images enables accurate analysis of regional systolic LV function.
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Sotiropoulos GC, Malago M, Molmenti EP, Radtke A, Brokalaki EI, Nadalin S, Lang H, Frilling A, Baba HA, Kühl H, Verhagen R, Broelsch CE. Disease course after liver transplantation for hepatocellular carcinoma in patients with complete tumor necrosis in liver explants after performance of bridging treatments. Eur J Med Res 2005; 10:539-42. [PMID: 16356871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023] Open
Abstract
AIM To study the disease course of patients with hepatocellular carcinoma (HCC) showing complete tumor necrosis in their liver explants after undergoing bridging treatments followed by liver transplantation (LTx). PATIENTS AND METHODS We evaluated data corresponding to 10 patients with liver cirrhosis undergoing bridging treatments for HCC prior to LTx. In all cases there was complete tumor necrosis in the explanted livers. RESULTS There were 8 men and 2 women. Percutaneous radiofrequency ablation (RFA) was performed under computed tomographic guidance in 4 patients. The remaining 6 patients underwent transarterial chemoembolization (TACE). Five of them received one session of TACE, while the remaining one received a series of 4 sessions prior to LTx. Six patients had solitary nodules with a median diameter of 3.5 cm (range 2.5-4.2 cm). Four of them underwent RFA. Segmental tumor chemoembolization was performed in 2 patients. The remaining 4 patients had 2 tumors each with a median total diameter of 4.4cm (range 4.2-6.0 cm) prior to TACE. They underwent bilobar hepatic chemoembolization, which under staged the tumors prior to live donor liver transplantation (LDLTx). Six patients underwent deceased donor orthotopic liver transplantation. LDLTx was performed in 4 patients. Median waiting time to LTx was 53 days. All patients are alive without recurrence after a median follow-up of 19 months. CONCLUSION Achievement of 100% tumor necrosis by means of bridging treatments followed by LTx for HCC is characterized by a very low recurrence rate and should receive further consideration and study.
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Keck A, Kühl H, Jensen A. Differenzialdiagnostik einer intrakardialen Raumforderung - Metastase oder Thrombus? Geburtshilfe Frauenheilkd 2005. [DOI: 10.1055/s-2005-872914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Grabellus F, Dereskewitz C, Schmitz KJ, Kaiser GM, Kühl H, Kersting C, Frilling A, Metz KA, Baba HA. [Two cystic retroperitoneal lesions mimicking adrenal cysts]. DER PATHOLOGE 2005; 26:226-30. [PMID: 15322819 DOI: 10.1007/s00292-004-0714-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Adrenal cysts are uncommon lesions and most of them are found incidentally during abdominal imaging. We report on two benign extraadrenal lesions mimicking adrenal tumors in abdominal imaging. The histopathological investigation of the lesions revealed a foregut duplication cyst of the lesser gastric curvature and an epithelial inclusion cyst (epidermoid cyst) in an intrapancreatic accessory spleen respectively.
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Mahnken A, Koos R, Katoh M, Wildberger JE, Spüntrup E, Busch P, Kühl H, Günther RW. Myokardiale Vitalitätsdiagnostik in der Mehrschicht-Spiral-CT. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867434] [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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Stattaus J, Kühl H, Papathanassiou S, Göhde S, Forsting M. Inwieweit bestimmen Nadelkaliber und die Verwendung der Koaxialtechnik über den Erfolg der CT-gesteuerten Stanzbiopsie? ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867851] [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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63
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Kühl H, Veit P, Rosenbaum S, Bockisch A, Antoch G, Forsting M, Barkhausen J. Ganzkörper-PET/CT bei Patienten mit malignen Lebertumoren - Einfluss auf die Therapieentscheidung bei geplanter RF-Ablation. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867628] [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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64
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Kühl H, Elo B, Boes T, Antoch G, Veit P, Stattaus J, Barkhausen J, Forsting M. Volumetrische Größenbestimmung des Tumors und der Ablationsnekrose nach Thermoablation von Lebertumoren: Erlaubt die Volumetrie eine Vorhersage zur lokalen Tumorkontrolle? ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867633] [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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65
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Ringleb O, Kühl H, Scheib H, Rimpler A. Comparison of measured and calculated dose rates for the Castor HAW 20/28 CG. RADIATION PROTECTION DOSIMETRY 2005; 116:667-70. [PMID: 16604722 DOI: 10.1093/rpd/nci213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
In January 2003 neutron and gamma dose rate measurements at a CASTOR HAW 20/28 CG were performed by the Bundesamt für Strahlenschutz at Gorleben. First, commercial dose rate measurement devices were used, then spectral measurements with a Bonner sphere system were made to verify the results. Axial and circumferential dose rate profiles were measured near the cask surface and spectral measurements were performed for some locations. A shielding analysis of the cask was performed with the MCNP Monte Carlo Code with ENDF/B-VI cross section libraries. The cask was modelled 'as built', i.e. with its real inventory, dimensions and material densities and with the same configuration and position as in the storage facility. The average C/E-ratios are 1.3 for neutron dose rates and 1.4 for gamma dose rates. Both the measured and calculated dose rates show the same qualitative trends in the axial and circumferential direction. The spectral measurements show a variation in the spectra across the cask surface. This correlates with the variation found in the C/E-ratios. At cask midheight good agreement between the Bonner sphere system and the commercial device (LB 6411) is found with a 7% lower derived H*(10) dose rate from the Bonner sphere system.
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Freudenberg LS, Schueler AO, Beyer T, Antoch G, Kühl H, Bornfeld N, Bockisch A, Egelhof T. Whole-body fluorine-18 fluordeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) in staging of advanced uveal melanoma. Surv Ophthalmol 2004; 49:537-40. [PMID: 15325198 DOI: 10.1016/j.survophthal.2004.06.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2022]
Abstract
Fluorine-18 fluordeoxyglucose positron emission tomography (FDG-PET) is an useful tool in diagnosing and monitoring of malignant cutaneous melanoma. However, the feasibility and usefulness of FDG-PET in uveal melanoma is not yet established. We present a patient with suspected advanced uveal melanoma who underwent combined FDG-PET/computed tomography (CT) for staging. FDG-PET/CT images demonstrated vital intraocular tumor. Anatomical assignment of the malignancy to the choroid was possible by means of the coregistered computed tomography. Furthermore, PET revealed an unknown otherwise undetected vital liver metastasis. We conclude that combined FDG-PET/CT has potential to further improve staging and therapy planning in patients with advanced uveal melanoma.
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Bockisch A, Beyer T, Antoch G, Veit P, Müller S, Pink R, Rosenbaum S, Kühl H. Grundlagen und klinischer Nutzen von PET-CT. Radiologe 2004; 44:1045-54. [PMID: 15517140 DOI: 10.1007/s00117-004-1122-9] [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: 10/26/2022]
Abstract
Medicine today imposes high demands on diagnosing disease. Techniques should be preferably noninvasive, identify the disease at an early stage, and be quick and accurate. Frequently, these demands can only be met by employing various diagnostic modalities. Consequently, the integration of two imaging modalities, such as the combination of PET and CT, increases the quality of coregistration and facilitates a timely diagnosis. However, complex imaging procedures require a judicious choice of the areas of application. If, for example, both PET and CT are indicated then a combined PET/CT exam results in improved diagnosis, whereby the actual benefit will depend upon the clinical problem. Typically we expect an advantage of 10% with PET/CT compared to separate examinations with CT and PET. In addition, PET/CT allows for new indications and applications, which cannot be performed satisfactorily with independent examinations and retrospective image alignment. One example is the application of PET/CT in radiation therapy planning.
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Schlosser T, Kühl H, Bartel T, Barkhausen J. Aortic dissection with compression of the ostium of the right coronary artery: visualisation by 16 row multislice CT. Heart 2004; 90:998. [PMID: 15310682 PMCID: PMC1768424 DOI: 10.1136/hrt.2004.034629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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69
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Antoch G, Saoudi N, Freudenberg L, Kühl H, Müller S, Beyer T, Bockisch A, Debatin J. Poster zum Thema „Varia“ (CT, PET/SPECT/Szintigraphie) Tumorstaging in der Onkologie: Genauigkeit der Ganzkörper-FDG-PET/CT. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-828539] [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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70
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Krombach G, Kühl H, Bücker A, Spüntrup E, Lipke C, Schröder J, Günther RW. Darstellung von Herzkappenfehlern mittels der segmentierten CINE true-FISP-MRT. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827932] [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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71
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Vogt F, Antoch G, Veit P, Massing S, Debatin JF, Kühl H. Evaluierung der physiologischen Regenerationsvorgänge der Leber nach Radiofrequenzablation mittels kontrastmittelverstärkter MRT, CT und Sonographie. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827879] [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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72
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Kühl H, Beiderlinden M, Debatin JF, Peters J. Initiales Thorax-CT bei ARDS-Patienten – Korellation der CT-Befunde mit Beatmungsparametern und Patientenüberleben. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827614] [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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73
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Antoch G, Stattaus J, Freudenberg LS, Nemat AT, Kühl H, Bockisch A, Debatin JF. Genauigkeit der kombinierten PET/CT beim präoperativen Staging des nicht-kleinzelligen Bronchialkarzinomes. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827604] [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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Kühne CA, Kaiser GM, Kühl H, Fischer M, Nast-Kolb D, Paffrath T. [Tracheal rupture from blunt chest injury in a child]. Chirurg 2003; 74:579-82. [PMID: 12883809 DOI: 10.1007/s00104-003-0654-2] [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: 10/26/2022]
Abstract
Tracheobronchial lesions after blunt chest injury are rare. Diagnosis and therapy can prove to be challenging for the attending physician. Nonrecognition of this injury may entail severe complications. Herein we report the case of a 9-year-old girl with rupture of the trachea due to a fall against the handlebar of her kickboard. The clinical, radiological, and features of the therapy performed are discussed.
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Broelsch CE, Frilling A, Nadalin S, Valentin GC, Kühl H, Gerken G, Malago M. [Living organ donor transplantation--the German experience in comparison to others]. Chirurg 2003; 74:510-22. [PMID: 12883800 DOI: 10.1007/s00104-003-0685-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Living liver donation is a prominent and innovative method in the therapy of terminal liver disease in children and adults. Live donation of livers was first used in 1989 for children. After only 10 years, the concept was also established for application in adults. Due to the imminent lack of donor organs and the constantly increasing need of liver transplantation, this method will continue to grow in importance.
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Wimmer R, Kühl H, Röttger S, Schempp W. Comparative mapping of CDY and DAZ in higher primates. Cytogenet Genome Res 2003; 96:287-9. [PMID: 12438810 DOI: 10.1159/000063021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The human male specific expressed gene families CDY and DAZ are known to be repetitively clustered in the Y-specific region of the human Y chromosome. Comparative FISH-mapping of DNA clones specific for CDY and DAZ resulted in a Y-specific but diverse signal pattern within the non-recombining region of the Y-chromosomes of human and great apes. It can be concluded that the non-recombining part of the Y-chromosomes including CDY and DAZ, was exposed to species-specific amplifications, diversifications and rearrangements. Evolutionary fast fixation of any of these variations was possible as long as they did not interfere with male fertility.
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Ruchholtz S, Waydhas C, Schroeder T, Piepenbrink K, Kühl H, Nast-Kolb D. [The value of computed tomography in the early treatment of seriously injured patients]. Chirurg 2002; 73:1005-12. [PMID: 12395159 DOI: 10.1007/s00104-002-0429-1] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND The availability of newer, faster computed tomography (CT) technology has engendered discussion about whole-body CT-scanning for primary radiological diagnostics of seriously injured patients. METHOD Within a quality management system, the scaled, priority-oriented scheme of conventional radiological and CT-diagnostics used in each institution was analysed and compared with the possible benefit of whole-body CT-scanning. Every patient with severe trauma admitted directly from the scene of an accident, underwent basic radiological and sonographic diagnostics in the emergency room (ER). According to the findings, patients in a stable vital condition had CT-scans when indicated by the guidelines of the particular institution. RESULTS From 5/1998 until 12/2000, a total of 832 patients were treated in the ER. Of those, 480 patients (average ISS 20) were admitted directly from the scene of the accident. Basic radiological - sonographic diagnostics (radiographs of cervical spine, chest, and abdomen, as well as abdominal sonography) took 15+/-8 min. Twenty-two (5%) of the patients in hemorrhagic shock needed emergency operations after 57+/-43 min. The remaining patients underwent further radiological diagnostics (spine, extremities etc.) after 44+/-27 min. In 79% (379) of patients, CT was indicated. Cranial CT for traumatic brain injury prevailed clearly with 74% of cases. Spine (24%), chest (18%), abdomen (5%) and pelvis (5%) were indicated comparatively less frequently. The incidence of delayed diagnoses (after ICU-admission) was 4% (22). In 2% (nine) of patients the lesions possibly could have been detected by a primary CT-scan. In the three cases with thoracic lesions, there was a deviation from the indication guidelines for thoracic CT as normally used in the institution. There were three cases of delayed diagnoses in both the cerebral (small contusion haematomas) region and the abdominal region. The abdominal lesions were detected by sonographic control examinations. No patient died because of a delayed diagnosis. The average X-ray dose was five times lower with the scaled diagnostic management comprising indicated CT when compared to the doses calculated for routine whole-body CT. CONCLUSION While 74% of patients had cranial CT, only 25% needed CT for the trunk regions. Delayed diagnoses were rare and without severe consequences for the patient. Considering the five times higher X-ray doses combined with the possible time loss in patients with unstable conditions, primary whole-body CT-scanning should not be performed routinely when serious injury is suspected.
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Goldmann T, Wiedorn KH, Kühl H, Olert J, Branscheid D, Pechkovsky D, Zissel G, Galle J, Müller-Quernheim J, Vollmer E. Assessment of transcriptional gene activity in situ by application of HOPE-fixed, paraffin-embedded tissues. Pathol Res Pract 2002; 198:91-5. [PMID: 11928870 DOI: 10.1078/0344-0338-00192] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We report the use of HOPE-fixation (HOPE = Hepes-Glutamic acid buffer mediated Organic solvent Protection Effect) for specimens utilized for in situ hybridization targeting mRNA. For this purpose, an optimized protocol was developed and repeatedly tested on HOPE-fixed lung specimens. We observed that neither pretreatment, permeabilizing the cells, nor prehybridization is necessary to generate signals. After deparaffinizing, the random primed digoxigenin-labeled probes are directly hybridized together with yeast tRNA for blocking unspecific signals. Detection was performed using anti digoxigenin antibodies conjugated with alkaline phosphatase and new-fuchsine or NBT/BCIP as substrates. The results were verified by RT-PCR and adequate negative controls. Signals for human surfactant protein-A and interferon-gamma-inducible protein-10 developed rapidly within 10 min, accompanied by high signal intensities comparable to those observed in immunohistochemistry. Signal enhancement by biotinyl-tyramide, although giving suitable results as well, did not lead to higher signal intensities, and thus was not necessary in conjunction with the probes tested so far. These experiments were performed with material stored under appropriate conditions (at +4 degrees C) up to five years. To sum up, these initial results, obtained with the novel HOPE-fixative, are promising as regards the enhancement of the capabilities of in situ hybridization in the future.
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Olert J, Wiedorn KH, Goldmann T, Kühl H, Mehraein Y, Scherthan H, Niketeghad F, Vollmer E, Müller AM, Müller-Navia J. HOPE fixation: a novel fixing method and paraffin-embedding technique for human soft tissues. Pathol Res Pract 2002; 197:823-6. [PMID: 11795830 DOI: 10.1078/0344-0338-00166] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We have developed a novel method for tissue fixation, including subsequent paraffin-embedding and sectioning, that allows the complete pathological analysis of all types of human soft tissues. Furthermore, it maintains additional positive features relevant to immunohistochemistry and molecular pathology. The so-called HOPE-technique (Hepes-Glutamic acid buffer mediated Organic solvent Protection Effect) comprises a protection-solution with an organic buffer, acetone as the only dehydrating agent, and pure paraffin of 52-54 degrees C melting temperature. Although the exact mechanism of protection has still to be elucidated, it seems rather unlikely that chemical bindings occur during the whole process of fixation, which is described and compared with the standard formalin-paraffin technique. Essentially, HOPE-fixed sections show formalin-like morphology. However, the sections are somewhat difficult to handle because of their fragility. This is due to the absence of any type of protein cross-linking and the dynamic processes of immersion and outflow of the HOPE protection solution. HOPE-fixed sections provide an excellent preservation of proteins and antigenic structures for differential analysis by immunohistochemical and/or enzyme histochemical techniques. However, their most remarkable feature is the extremely low degradation of nucleic acids (DNA and RNA) combined with good results obtained by in situ hybridization techniques. In conclusion, HOPE fixation may become a valuable additional tool in modern pathology.
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Yuan D, Kühl H, Nowak B, Kleinhans E, Kaiser HJ, Franke A, Büll U, Hanrath P, Hoffmann R. Pulsed tissue Doppler imaging to assess myocardial viability by quantification of regional myocardial functional reserve. Echocardiography 2001; 18:657-64. [PMID: 11801207 DOI: 10.1046/j.1540-8175.2001.00657.x] [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: 11/20/2022] Open
Abstract
Dobutamine stress echocardiography (DSE) is used widely to evaluate myocardial viability, but is limited by the subjective nature of test interpretation. Assessment of systolic function by pulsed tissue Doppler imaging (TDI) during dobutamine stimulation may allow a more objective evaluation of myocardial functional reserve and, thus, myocardial viability. In 30 patients (58 +/- 9 years) with prior myocardial infarction, pulsed TDI with low dose dobutamine stress (10 microg/kg/min) was performed to assess myocardial viability. Qualitative assessment of two-dimensional (2-D) DSE and positron emission tomography (PET) were used for comparison. Peak systolic myocardial velocity was measured for each left ventricular segment (16 segments) at baseline and low dose dobutamine stress using pulsed TDI. The absolute and relative increases of peak systolic velocity from rest to low dose dobutamine stress were calculated. Three hundred sixty-four segments with adequate pulsed TDI tracing were divided according to either 2-D DSE or PET findings into normal, viable (mismatch), and nonviable (match) segments. The increase of peak systolic myocardial velocity from baseline to low dose dobutamine was significantly different between segments defined as normal, viable, and nonviable by 2-D DSE (2.71 +/- 1.91 cm/sec, 1.86 +/- 2.15 cm/sec, and 0.99 +/- 1.16 cm/sec, respectively; P < 0.001). The increase of peak systolic myocardial velocity from rest to low dose dobutamine for normal, mismatch, and match segments defined by PET was 2.72 +/- 1.96, 1.01 +/- 0.96 and 0.80 +/- 1.07 cm/sec, respectively (P < 0.001). In conclusion, the increase of peak systolic myocardial velocity during low dose dobutamine stimulation determined by pulsed TDI distinguishes between different myocardial viability states. It complements the standard interpretation of stress echocardiograms.
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Kühl H, Röttger S, Heilbronner H, Enders H, Schempp W. Loss of the Y chromosomal PAR2-region in four familial cases of satellited Y chromosomes (Yqs). Chromosome Res 2001; 9:215-22. [PMID: 11330396 DOI: 10.1023/a:1012219820317] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Applying fluorescence in-situ hybridization (FISH) of various Y chromosomal DNA probes to four familial cases of human Yqs, it was possible to demonstrate that the formation of Yqs must have arisen from a reciprocal translocation involving the short arm of an acrocentric autosome and the heterochromatin of the long arm of the Y chromosome (Yqh). Breakpoints map within Yqh and the proximal short arm of an acrocentric autosome resulting in the gain of a nucleolus organizer region (NOR) including the telomere repeat (TTAGGG)n combined with the loss of the pseudoautosomal region 2 (PAR2) at the long arm of the recipient Y chromosome. In no case could the reciprocal product of an acrocentric autosome with loss of the NOR and gain of PAR2 be detected. Using the 15p-specific classical satellite-III probe D15Z1 in two of the four Yqs probands presented here, it could be shown that the satellited material originated from the short arm of chromosome 15. In contrast to the loss of PAR2 in Yqs chromosomes, another Y chromosomal variant (Yqh-) showing deletion of long-arm heterochromatin in Yq12 has retained PAR2 referring to an interstitial deletion of Yq heterochromatin in such deleted Y chromosomes.
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Wiedorn KH, Goldmann T, Henne C, Kühl H, Vollmer E. EnVision+, a new dextran polymer-based signal enhancement technique for in situ hybridization (ISH). J Histochem Cytochem 2001; 49:1067-71. [PMID: 11511676 DOI: 10.1177/002215540104900901] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Seventy paraffin-embedded cervical biopsy specimens and condylomata were tested for the presence of human papillomavirus (HPV) by conventional in situ hybridization (ISH) and ISH with subsequent signal amplification. Signal amplification was performed either by a commercial biotinyl-tyramide-based detection system [GenPoint (GP)] or by the novel two-layer dextran polymer visualization system EnVision+ (EV), in which both EV-horseradish peroxidase (EV-HRP) and EV-alkaline phosphatase (EV-AP) were applied. We could demonstrate for the first time, that EV in combination with preceding ISH results in a considerable increase in signal intensity and sensitivity without loss of specificity compared to conventional ISH. Compared to GP, EV revealed a somewhat lower sensitivity, as measured by determination of the integrated optical density (IOD) of the positively stained cells. However, EV is easier to perform, requires a shorter assay time, and does not raise the background problems that may be encountered with biotinyl-tyramide-based amplification systems. (J Histochem Cytochem 49:1067-1071, 2001)
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Pan C, Hoffmann R, Kühl H, Severin E, Franke A, Hanrath P. Tissue tracking allows rapid and accurate visual evaluation of left ventricular function. EUROPEAN JOURNAL OF ECHOCARDIOGRAPHY : THE JOURNAL OF THE WORKING GROUP ON ECHOCARDIOGRAPHY OF THE EUROPEAN SOCIETY OF CARDIOLOGY 2001; 2:197-202. [PMID: 11882453 DOI: 10.1053/euje.2001.0098] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AIMS To evaluate the ability of tissue tracking for rapid assessment of left ventricular function by determination of the systolic mitral annular displacement. Tissue tracking is a new echocardiographic modality based on Doppler Tissue imaging allowing rapid visual assessment of the systolic baso-apical displacement of each myocardial segment in apical views by a graded colour display. METHODS AND RESULTS We studied 90 patients (69 male, age 60.4 +/- 10.1 years) with different left ventricular function (25 subjects with normal left ventricular function, 25 patients with homogeneous depression of left ventricular function and 40 patients with prior myocardial infarction). Systolic mitral annular displacement was determined by tissue tracking and M-mode echocardiography. Apical two-, three- and four-chamber views were used to determine the mitral annular displacement of six sites. Left ventricular ejection fraction was determined by two-dimensional echocardiography using Simpson's rule. Tissue tracking was possible in all patients. In the 50 patients with normal left ventricular function or homogeneous depression of left ventricular function, mean mitral annular displacement correlated closely with mitral annular displacement determined by M-mode (r=0.99,P <0.001) and with left ventricular ejection fraction (r=0.97, P<0.001). Left ventricular ejection fraction < or = 30% could be predicted with a sensitivity of 98% and a specificity of 78% using a cut-off value of 4.8mm for the mitral annular displacement determined by tissue tracking. In patients with prior myocardial infarction correlation between the mean mitral annular displacement and left ventricular ejection fraction was lower (r=0.87, P<0.001). CONCLUSION Systolic mitral annular displacement determined by tissue tracking correlates closely with mitral annular displacement determined by M-mode and with left ventricular ejection fraction. Thus, tissue tracking allows rapid semiquantitative evaluation of global left ventricular function by assessment of systolic mitral annular displacement.
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Frieske R, Kühl H, Yuan D, Lepper W, Franke A, Hoffmann R. [Improved endocardial border delineation during dobutamine stress echocardiography using the left heart contrast medium BY 963]. ZEITSCHRIFT FUR KARDIOLOGIE 2000; 89:186-94. [PMID: 10798274 DOI: 10.1007/s003920050467] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
UNLABELLED The interpretation of induced wall motion abnormalities during dobutamine stress echocardiography is affected in the case of impaired image quality. In 48 consecutive patients (mean age 62 +/- 9 years, 32 males, 16 females) with suspected coronary disease undergoing coronary angiography, the transpulmonary contrast agent BY 963 was given i.v. as bolus during dobutamine stress echocardiography (10-40 micrograms kg min, plus max. 1 mg atropine) to analyze improvements in endocardial border delineation. For each of the 16 segments of the left ventricle, the endocardial border delineation was evaluated. Using BY 963 the average number of non-evaluable segments decreased by 58% from 5.2% to 2.2% at rest (p = 0.008) and by 56% from 5.9% to 2.6% at maximal stress (p = 0.003) as compared to the non-contrast study for all patients. In patients with impaired image quality, defined as at least 1 non-evaluable segment at rest without contrast enhancement (N = 14), the number of non-evaluable segments decreased from 19.2% to 8.2% (p = 0.004) at rest and from 19.2% to 9.6% (p = 0.006) at maximal stress. The greatest decrease of non-evaluable segments was seen in the lateral and anterior segments of the apical views (maximum of 80%). The improved endocardial border delineation resulted in an improved agreement between two observers in the interpretation of the dobutamine stress echocardiograms as positive or negative (kappa = 0.38 without contrast, kappa = 0.58 with contrast). Contrast application resulted in a slight improvement of diagnostic accuracy of dobutamine stress echocardiography in the detection of angiographically proven significant coronary artery disease. CONCLUSION In patients with impaired endocardial border delineation the use of the echo contrast agent BY 963 reduces the number of non-evaluable segments. Improvement of endocardial delineation is greatest for lateral and anterior segments in the apical views.
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Hoffmann R, Lethen H, Kühl H, Lepper W, Hanrath P. Extent and severity of test positivity during dobutamine stress echocardiography. Influence on the predictive value for coronary artery disease. Eur Heart J 1999; 20:1485-92. [PMID: 10493847 DOI: 10.1053/euhj.1999.1628] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
AIMS Recent studies have evaluated the diagnostic accuracy and predictive value of dobutamine echocardiography without considering the additional information implied by the magnitude of induced wall motion abnormalities. We sought to evaluate the positive predictive value of dobutamine echocardiography for coronary artery disease from the extent and severity of the induced wall motion abnormality. In addition, we intended to determine factors associated with false-negative dobutamine echocardiography. METHODS AND RESULTS Two hundred and eighty-three consecutive patients with suspected coronary artery disease underwent dobutamine echocardiography (up to 40 microg x kg(-1) x min(-1)+atropine up to 1 mg) and coronary angiography. The number of segments and the degree of deterioration were used to describe the extent and severity of induced wall motion abnormality. Analysis of clinical, procedural and echocardiographic variables was performed to determine factors associated with false-negative results. The positive predictive value of dobutamine echocardiography increased from 85% to 90%, 94% and 94% with deterioration of wall motion by one grade in >/=1, >/=2, >/=3 and >/=4 segments, respectively (P<0.05). Deterioration of wall motion by two grades in one segment had a positive predictive value of 96% as compared to 85% for deterioration by only one grade in one segment (P<0.05). Patients with false-negative test results received atropine more frequently (28% vs 13%, odds ration [OR]=3.87, 95% confidence interval [CI]=1.54-9.75, P=0.028) than patients with a correct positive result. However, angina (15 vs 37%, OR=0.26, 95% CI=0.09-0.71, P=0.010), ECG changes during dobutamine stress (15% vs 35%, OR=0.49, 95% CI 0.19-1.25, P=0.014) and high image quality (OR 1.59, 95% CI 1.07-2.37, P=0.015) were less frequent. The sensitivity of dobutamine echocardiography increased from 67% to 71% and 86% (P<0.05) with increasing achieved maximal heart rate (<75%, 75-85% and >85% of maximal heart rate). CONCLUSION The positive predictive value of dobutamine echocardiography increases significantly as the extent and severity of induced wall motion abnormality increases. Thus, the degree of test positivity should be reported in clinical practice. Despite high pharmacological drug doses, the haemodynamic response may still be insufficient in some patients to induce myocardial ischaemia, resulting in false-negative dobutamine echo tests. To maximize the sensitivity of dobutamine echocardiography, the highest haemodynamic stress level, with a heart rate above 85% of the predicted heart rate, should be reached.
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Hoffmann R, Franke A, Kühl H. [Methodical improvements of exercise echocardiography]. Dtsch Med Wochenschr 1999; 124:1101-6. [PMID: 10535039 DOI: 10.1055/s-2007-1024488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wiedorn KH, Kühl H, Galle J, Caselitz J, Vollmer E. Comparison of in-situ hybridization, direct and indirect in-situ PCR as well as tyramide signal amplification for the detection of HPV. Histochem Cell Biol 1999; 111:89-95. [PMID: 10090569 DOI: 10.1007/s004180050338] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
One hundred paraffin-embedded cervical biopsy specimens were tested for the presence of human papilloma virus (HPV) by in situ hybridization (ISH), and by direct and indirect in situ PCR (IS-PCR) in order to evaluate the efficiency of the different in situ methods in detecting HPV infection. ISH was performed using either commercial DNA probes or a cocktail of 5'-digoxigenin labeled oligoprimers. The same were used for ISH during indirect IS-PCR. To enhance the sensitivity of ISH several polymers, i.e., polyvinyl alcohol (PVA), polyethylene glycol, and polyvinylpyrrolidone were added to the alkaline phosphatase nitro blue tetrazolium/5-bromo-4-chloro-3-indolyl phosphate (NBT/BCIP) reaction. Furthermore, tyramide signal amplification (TSA) was tried for signal amplification. Those samples treated with PVA during the NBT/BCIP reaction did not show any signal amplification whereas those treated with TSA exhibited a dramatic increase in sensitivity with usually acceptable signal to noise ratios. Our results show that, regarding sensitivity, ISH with subsequent signal amplification by TSA can be used as an almost equivalent alternative to the more cumbersome IS-PCR on routinely processed tissue specimens. When considering reproducibility, it is superior to IS-PCR.
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Hakvoort JHM, Heineke M, Heymann K, Kühl H, Riethmüller R, Witte G. Optical remote sensing of microphytobenthic biomass: a method to monitor tidal flat erodibility. ACTA ACUST UNITED AC 1998. [DOI: 10.1007/bf03043945] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Chung O, Kühl H, Stoll M, Unger T. Physiological and pharmacological implications of AT1 versus AT2 receptors. KIDNEY INTERNATIONAL. SUPPLEMENT 1998; 67:S95-9. [PMID: 9736262 DOI: 10.1046/j.1523-1755.1998.06719.x] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Angiotensin II (Ang II) has diverse physiological actions that lead, for instance, to increases in extracellular volume and peripheral vascular resistance and blood pressure, and it has also been implicated in the regulation of cell growth and differentiation. Molecular cloning and pharmacological studies have defined two major classes of Ang II receptors, designated AT1 and AT2. Most effects of Ang II are mediated by AT1 receptors. Much less is known about the physiological role of AT2 receptors. Recent evidence suggests involvement of AT2 receptors in development, cell differentiation, apoptosis, and regeneration in various tissues. AT1 and AT2 receptors have been shown to exert counteracting effects on cellular growth and differentiation, vascular tone, and the release of arginine vasopressin. In each condition, the AT2 receptor appears to down-modulate actions mediated by the AT1 receptor, resulting in decreased cellular proliferation, decreased levels of serum arginine vasopressin levels, or decreased vasoconstrictor responses. In addition, in neuronal cell lines, the AT2 receptor exerts antiproliferative actions and promotes neurite outgrowth, an effect accompanied by significant changes in the expression pattern of growth/differentiation-related genes.
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Kühl H. Accurate Assessment of Left Ventricular Mass by 3D-Echo: Comparison to Magnetic Resonance Imaging. J Am Coll Cardiol 1998. [DOI: 10.1016/s0735-1097(97)85600-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Riethmüller R, Hakvoort JHM, Heineke M, Heymann K, Kühl H, Witte G. Relating erosion shear stress to tidal flat surface colour. ACTA ACUST UNITED AC 1998. [DOI: 10.1144/gsl.sp.1998.139.01.23] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Flachskampf FA, Kühl H, Franke A, Frielingsdorf J, Klues H, Krebs W, Hanrath P. [Three-dimensional reconstruction of heart valves]. Herz 1995; 20:236-42. [PMID: 7557827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The reconstruction of three-dimensional data sets from two-dimensional echocardiographic images offers several fundamental advantages: 1. more complete data than present in the few standard 2D-view; 2. off-line generation of any desired plane, cut, or perspective after the data set has been acquired; 3. access to quantitative parameters like surface areas (e.g., of valve leaflets or portions of leaflets), volumes, and others, without geometric assumptions. The mitral valve has been the focus of several studies using various techniques of reconstruction of transthoracic or transesophageal images. These studies have shown the mitral annulus to be a non-planar, "saddle-shaped" structure, with an average distance of highest to lowest points of 14 mm in normals. This recognition of mitral annular non-planarity has led to a more stringent echocardiographic definition of mitral valve prolapse. Further studies have shown systolic shrinkage of mitral annular area by about 30% and systolic apico-basal translation of the annulus by approximately 1 cm in normals. In patients with dilated cardiomyopathy, the annulus is flattened, and both cyclic change in annular area and apico-basal translation are significantly reduced. 3D-studies of the left ventricular outflow tract in hypertrophic obstructive cardiomyopathy allow measurement of outflow tract and leaflet surface areas and dynamic spatial visualization of systolic anterior motion of the anterior mitral leaflet. Automated techniques to reconstruct the full grey value data set from a high number of parallel or rotational transesophageal planes allow impressive visualization of normal and diseased mitral and aortic valves or valve prostheses, with special emphasis on generating "surgical" views and perspectives, which cannot be obtained by conventional tomographic imaging.(ABSTRACT TRUNCATED AT 250 WORDS)
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A. Vering Michel R, Fortmeyer H, Kühl H, Albrecht M, Stegmüller M. Oestrogen related hormone receptor modulation in human breast cancer xeno-transplanted into nude mice. part II Long term modulation. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0022-4731(87)91552-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kohl JG, Dudel G, Schlangstedt M, Kühl H. Zur morphologischen und ökologischen abgrenzung von Aphanizomenon flos-aquaeRalfs ex Born. et Flah. und A. gracile (Lemm.) Lemm. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/s0003-9365(85)80037-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lehmann HG, Hennessen W, Engelhardt H, Freudenstein H, Widmark R, Weber-Oldecop H, Oehme J, Siegle-Joos H, Sinios A, Schmidt-Dohna W, Nevermann L, Beutnagel H, Schumann K, Schulz R, Kühl H, Schmöger R. [Investigations carried out to ascertain the dose-effect relationship of a BCG vaccine, strain 1331 Copenhagen, in neonates and young infants (author's transl)]. ZENTRALBLATT FUR BAKTERIOLOGIE, PARASITENKUNDE, INFEKTIONSKRANKHEITEN UND HYGIENE. ERSTE ABTEILUNG ORIGINALE. REIHE B: HYGIENE, PRAVENTIVE MEDIZIN 1978; 166:250-63. [PMID: 654682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
1405 neonates and infants were vaccinated with BCG Vaccine (strain 1331 Copenhagen) at five clinics in the Federal Republic of Germany. Doses in logarithmic increments from 22000 to 250000 VU (viable units)/0.1 ml were given by strictly intradermal injection. Carrying out the post-vaccinal tuberculin test by the MENDEL-MANTOUX technique, the dose-effect relationship could be demonstrated (Fig. 3). Conversion rates raised from 43% to 76% (Tab. 1); they are furthermore depending from the tuberculin dose and the assessment of the skin reaction. Tests with up to 50 I.U. of purified tuberculin were resulting in conversion rates over 90% for vaccination doses of 100 000 VU and more, any palpable infiltration regarding as a positive result (Fig. 4). The vaccine showed good safety in all concentrations employed concerning reactions at the site of injection. Lympnode enlargement, palable even 12 weeks postvacc., was common. In the course of the trial there was one case of suppurative lymphadenitis among the 262 children who were given the vaccine in the highest concentration (250000 VU). Subsequent trials revealed a rate of this complication in the 1:1000 range. The approval for the vaccine with 100000-300000 VU/dose has subsequently been given by the Federal Bureau for Sera and Vaccines.
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Bursche EM, Kühl H, Mann H. Beziehungen Zwischen Dem Chemismus und Der Phytoplanktonentwicklung Auf Der Unteren Weser. ACTA ACUST UNITED AC 1959. [DOI: 10.1002/iroh.19590440113] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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97
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98
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Chrometzka F, Kühl H. Ausbau der Überdruckultrafiltration des Serums. Dtsch Med Wochenschr 1937. [DOI: 10.1055/s-0028-1120922] [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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99
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Mohs K, Kühl H. Über die Wirkung von Mehl auf die Gärkraft der Hefe. Eur Food Res Technol 1929. [DOI: 10.1007/bf01653795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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100
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