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Heratizadeh A, Haufe E, Stölzl D, Abraham S, Heinrich L, Kleinheinz A, Wollenberg A, Weisshaar E, Augustin M, Wiemers F, Zink A, von Kiedrowski R, Hilgers M, Worm M, Pawlak M, Sticherling M, Fell I, Handrick C, Schäkel K, Staubach-Renz P, Asmussen A, Schwarz B, Bell M, Effendy I, Bieber T, Homey B, Gerlach B, Tchitcherina E, Stahl M, Schwichtenberg U, Rossbacher J, Buck P, Mempel M, Beissert S, Biedermann T, Weidinger S, Schmitt J, Werfel T. Baseline characteristics, disease severity and treatment history of patients with atopic dermatitis included in the German AD Registry TREATgermany. J Eur Acad Dermatol Venereol 2020; 34:1263-1272. [PMID: 31721316 DOI: 10.1111/jdv.16078] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 10/17/2019] [Indexed: 01/26/2023]
Abstract
BACKGROUND The Atopic Dermatitis (AD) TREATgermany registry was initiated by the German Society for Dermatology (DDG) in 2011 to evaluate the 'real-life' situation of health care for patients with AD. OBJECTIVES Interim data analysis on baseline characteristics as well as current and prescribed systemic treatments of the TREATgermany registry patients. METHODS Patients (≥18 years) with moderate-to-severe AD [objective (o)SCORAD > 20], or with current or previous anti-inflammatory systemic treatment for AD within 24 months, were included and are followed up over at least 24 months. To assess clinical signs, the eczema area severity index (EASI, 0-72), the oSCORAD (0-83) and the Investigator Global Assessment (IGA; 6-point scale) were used. The disease severity was globally scored by the patients [Patient Global Assessment (PGA); six-step Likert scale]. Disease symptoms were assessed by the patient-oriented eczema measure (POEM, 0-28) and numeric rating scales (NRS, 0-10). Health-related quality of life was measured using the dermatological life quality index (DLQI, 0-30). RESULTS A total of 612 patients were recruited across 32 sites between 06/2016 and 01/2019 (mean age: 42.6 ± 14.2 years; mean oSCORAD: 40.8 ± 16.3). The mean POEM score was 16.3 ± 7.5. Pruritus was rated highest among subjective symptoms (NRS: 5.4 ± 2.7). The mean DLQI value was 11.3 ± 7.5. The frequency of arterial hypertension was lower (20.8%) compared with the general population, whilst this was higher for depression (10%). More than 60% of the patients had received systemic glucocorticosteroids, and 36.8% had received cyclosporine A prior to inclusion. Dupilumab was the leading substance documented as either 'current' (12.1%) or 'prescribed' (31.4%) at baseline. CONCLUSIONS These 'real-life' data clearly demonstrate the substantial disease burden. Most of TREATgermany patients were already treated with or prescribed dupilumab at baseline. Moreover, current findings indicate the urgent need for further alternative agents in order to achieve a perceptible improvement of quality of life of patients with moderate-to-severe AD.
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Affiliation(s)
- A Heratizadeh
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - E Haufe
- Center of Evidence-based Healthcare, University Hospital and Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - D Stölzl
- Department of Dermatology and Allergy, Center for Inflammatory Skin Diseases, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - S Abraham
- Department of Dermatology, University Allergy Center, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - L Heinrich
- Center of Evidence-based Healthcare, University Hospital and Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - A Kleinheinz
- Clinics for Dermatology, Elbe Klinikum Buxtehude, Buxtehude, Germany
| | - A Wollenberg
- Clinics and Outpatient Clinics for Dermatology and Allergy, LMU Munich, Munich, Germany
| | - E Weisshaar
- Occupational Dermatology, Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - M Augustin
- Insitute for Health Services Research in Dermatology Hamburg, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - F Wiemers
- Practice Dr. med. Franca Wiemers, Leipzig, Germany
| | - A Zink
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany.,Clinical Unit Allergology, Helmholtz Zentrum München, German Research Center for Environmental Health GmbH, Munich, Germany
| | - R von Kiedrowski
- CMSS - Company for Medical Study and Service, Selters/Westerwald, Germany
| | - M Hilgers
- Clinics for Dermatology and Allergy, University Hospital Aachen, Aachen, Germany
| | - M Worm
- Division of Allergy and Immunology, Department of Dermatology, Venerology and Allergy, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - M Pawlak
- Practice Dr. med. Anika Hünermund and Mario Pawlak, Heilbad Heiligenstadt, Germany
| | - M Sticherling
- Department of Dermatology, University Hospital, Friedrich Alexander University Erlangen-Nurnberg, Erlangen, Germany
| | - I Fell
- Hautmedizin Bad Soden, Bad Soden, Germany
| | - C Handrick
- Practice Dr. med. Christiane Handrick, Berlin, Germany
| | - K Schäkel
- Department of Dermatology, Ruprecht-Karls University Heidelberg, Heidelberg, Germany
| | - P Staubach-Renz
- Department of Dermatology and Allergy, University Medical Center Mainz, Mainz, Germany
| | - A Asmussen
- Practice Dermatologie an der Lesum, Bremen, Germany
| | - B Schwarz
- Practice Dr. med. Beate Schwarz, Langenau, Germany
| | - M Bell
- Practice Dr. Magnus Bell, Thomas Kaiser, Andernach, Germany
| | - I Effendy
- Department of Dermatology, Hospital Rosenhoehe, Bielefeld, Germany
| | - T Bieber
- Department of Dermatology and Allergy, Rheinische Friedrich-Wilhelms-University Bonn, Bonn, Germany
| | - B Homey
- Department of Dermatology, Heinrich-Heine-University Duesseldorf, Düsseldorf, Germany
| | - B Gerlach
- Practice Dr. med. Beatrice Gerlach, Dresden, Germany
| | - E Tchitcherina
- Practice Dr. med. Ekaterina Tchitcherina, Friedberg/Hessen, Germany
| | - M Stahl
- Practice Dr. med. Maren Stahl, Osterode, Germany
| | | | | | - P Buck
- Goldbek Medical, Hamburg, Germany
| | - M Mempel
- Practice Prof. Dr. med. Martin Mempel, Elmshorn, Germany
| | - S Beissert
- Department of Dermatology, University Allergy Center, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - T Biedermann
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany.,Clinical Unit Allergology, Helmholtz Zentrum München, German Research Center for Environmental Health GmbH, Munich, Germany
| | - S Weidinger
- Department of Dermatology and Allergy, Center for Inflammatory Skin Diseases, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - J Schmitt
- Center of Evidence-based Healthcare, University Hospital and Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - T Werfel
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
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Abraham S, Haufe E, Harder I, Heratizadeh A, Kleinheinz A, Wollenberg A, Weisshaar E, Augustin M, Wiemers F, Zink A, Biedermann T, von Kiedrowski R, Hilgers M, Worm M, Pawlak M, Sticherling M, Fell I, Handrick C, Schäkel K, Staubach P, Asmussen A, Schwarz B, Bell M, Neubert K, Effendy I, Bieber T, Homey B, Gerlach B, Tchitcherina E, Stahl M, Schwichtenberg U, Rossbacher J, Buck P, Mempel M, Beissert S, Werfel T, Weidinger S, Schmitt J. Implementation of dupilumab in routine care of atopic eczema: results from the German national registry TREATgermany. Br J Dermatol 2020; 183:382-384. [PMID: 32068242 DOI: 10.1111/bjd.18958] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- S Abraham
- Department of Dermatology, University Allergy Center, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - E Haufe
- Center of Evidence-Based Healthcare, University Hospital and Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - I Harder
- Center for Inflammatory Skin Diseases, Department of Dermatology and Allergy, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - A Heratizadeh
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - S Beissert
- Department of Dermatology, University Allergy Center, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - T Werfel
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - S Weidinger
- Center for Inflammatory Skin Diseases, Department of Dermatology and Allergy, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - J Schmitt
- Center of Evidence-Based Healthcare, University Hospital and Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
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Matney M, Tapian A, Goehring B, Unruh J, Gerlach B, McCoy G, Mohrhauser D, O’Quinn T, Gonzalez J, Houser T, Johnson R. Influence of Iodine Value and Packaging Type on Quality Characteristics of Food Service Packaged Bacon Slices. Meat and Muscle Biology 2017. [DOI: 10.22175/rmc2016.076] [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: 11/03/2022] Open
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Hobson A, Goehring B, Tapian A, Unruh J, Gerlach B, McCoy G, Matney M, Mohrhauser D, Gonzalez J, O’Quinn T, Houser T. Fresh Pork Belly Characteristics and Bacon Quality Based on 3 Iodine Value Categories. Meat and Muscle Biology 2017. [DOI: 10.22175/rmc2016.098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Bissonnette R, Worm M, Gerlach B, Guenther L, Cambazard F, Ruzicka T, Maares J, Brown T. Successful retreatment with alitretinoin in patients with relapsed chronic hand eczema. Br J Dermatol 2009; 162:420-6. [DOI: 10.1111/j.1365-2133.2009.09572.x] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [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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Alirezaï M, Gerlach B, Horvath A, Forsea D, Briantais P, Guyomar M. Results of a randomised, multicentre study comparing a new water-based gel of clindamycin 1% versus clindamycin 1% topical solution in the treatment of acne vulgaris. Eur J Dermatol 2005; 15:274-8. [PMID: 16048758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/01/2005] [Indexed: 05/03/2023]
Abstract
Several topical formulations of clindamycin phosphate are currently marketed for the treatment of acne vulgaris. This 12 week, multi-centre, investigator-blind, randomised, active and placebo-controlled, parallel group study assessed the clinical efficacy and safety of clindamycin 1% gel once-a-day vs clindamycin 1% solution twice-a-day, and to demonstrate its superiority vs its vehicle alone. A total of 592 subjects were included. After 12 weeks, a 65% reduction in inflammatory lesion count was observed with both active treatments. The gel was superior to its vehicle for total and inflammatory lesion reduction, Global Assessment of Improvement, and Global Severity Grade at final visit (all p < 0.01). No difference was found between the 2 active treatments for any of the evaluated criteria. Local tolerance in each active treatment group was slightly better with clindamycin gel (1.9% of subjects) relative to 3.1% in the topical solution group. In conclusion, the new water-based gel once-a-day formulation of clindamycin 1% is an effective, safe, and convenient alternative to the twice-a-day topical solution formulation in the treatment of acne vulgaris.
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Alirezaï M, Gerlach B, Horvath A, Forsea D. Clindamycin gel, 1% once a day versus clindamycin solution, 1% twice a day and clindamycin gel vehicle in the treatment of acne vulgaris. J Am Acad Dermatol 2004. [DOI: 10.1016/j.jaad.2003.10.057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Gerlach B, Audretsch W, Gogolin F, Koenigshausen T, Rohn R, Schmitt G, Dimmerling P, Willers R, Hartmann K. Remission-and breast preservation-rates in neoadjuvan treatment of breast cancer: preoperative chemotherapy vs. chemo-radiotherapy. Int J Radiat Oncol Biol Phys 2001. [DOI: 10.1016/s0360-3016(01)02269-6] [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: 11/15/2022]
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Gerlach B, Harder A, Hulsebos T, Leenstra S, Slotman B, Vandertop W, Hartmann K, Sminia P. Human glioma cells: genetic alterations and radiation and temozolomide sensitivity. Eur J Cancer 2001. [DOI: 10.1016/s0959-8049(01)80929-1] [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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Ghannoum MA, Hajjeh RA, Scher R, Konnikov N, Gupta AK, Summerbell R, Sullivan S, Daniel R, Krusinski P, Fleckman P, Rich P, Odom R, Aly R, Pariser D, Zaiac M, Rebell G, Lesher J, Gerlach B, Ponce-De-Leon GF, Ghannoum A, Warner J, Isham N, Elewski B. A large-scale North American study of fungal isolates from nails: the frequency of onychomycosis, fungal distribution, and antifungal susceptibility patterns. J Am Acad Dermatol 2000; 43:641-8. [PMID: 11004620 DOI: 10.1067/mjd.2000.107754] [Citation(s) in RCA: 350] [Impact Index Per Article: 14.6] [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: 11/22/2022]
Abstract
BACKGROUND Onychomycosis, a fungal infection of the nail bed, is responsible for up to 50% of nail disorders. Although several surveys have been conducted in different parts of the world, there have been no multicenter epidemiologic surveys of onychomycosis in North America. OBJECTIVE A 12-center study was undertaken to (1) determine the frequency of onychomycosis, (2) identify organisms recovered from the nails, and (3) determine the antifungal susceptibility of isolates. METHODS A total of 1832 subjects participated in this study and completed a comprehensive questionnaire, and nail clippings were collected for potassium hydroxide examination and culturing. RESULTS The frequency of onychomycosis, as defined by the presence of septate hyphae on direct microscopy and/or the recovery of a dermatophyte, was found to be 13.8%. In general, the dermatophyte isolates were susceptible to the antifungals tested. CONCLUSION Because of the limited number of large-scale studies, the baseline incidence is not firmly established. However, the higher frequency of onychomycosis in this study may confirm the suspected increase in incidence of disease in North America.
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Affiliation(s)
- M A Ghannoum
- Department of Dermatology, University Center for Medical Mycology, Cleveland, OH 44106-5028, USA
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Vedder H, Krieg JC, Gerlach B, Gemsa D, Bacher M. Expression and glucocorticoid regulation of macrophage migration inhibitory factor (MIF) in hippocampal and neocortical rat brain cells in culture. Brain Res 2000; 869:25-30. [PMID: 10865055 DOI: 10.1016/s0006-8993(00)02336-2] [Citation(s) in RCA: 18] [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] [Indexed: 01/09/2023]
Abstract
The biosynthesis of macrophage-migration inhibitory factor (MIF) and its regulation by the glucocorticoid dexamethasone was examined in cultured hippocampal and neocortical embryonic rat cells. Using immunohistochemical methods, MIF was found to be localized in neuronal as well as in non-neuronal cells. During the whole 12 day culture period, levels of MIF transcripts were detectable in both hippocampal and neocortical cells with an apparent increase in extracellular MIF protein at the later time points examined. Treatment with even very low concentrations (10(-11) M) of dexamethasone did not alter MIF mRNA levels but resulted in a rapid release of intracellular MIF protein within 1 and 4 h and a subsequent replenishment after 24 h. These data suggest that glucocorticoids do not affect the transcriptional activity of the MIF gene but induce the secretion of the protein, which suggests a close functional relationship of both mediators in the CNS.
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Affiliation(s)
- H Vedder
- Department of Psychiatry and Psychotherapy, Philipps-University, Rudolf-Bultmann-Str. 8, 35033, Marburg, Germany.
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Barbato G, Cicero DO, Cordier F, Narjes F, Gerlach B, Sambucini S, Grzesiek S, Matassa VG, De Francesco R, Bazzo R. Inhibitor binding induces active site stabilization of the HCV NS3 protein serine protease domain. EMBO J 2000; 19:1195-206. [PMID: 10716920 PMCID: PMC305661 DOI: 10.1093/emboj/19.6.1195] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Few structures of viral serine proteases, those encoded by the Sindbis and Semliki Forest viruses, hepatitis C virus (HCV) and cytomegalovirus, have been reported. In the life cycle of HCV a crucial role is played by a chymotrypsin-like serine protease encoded at the N-terminus of the viral NS3 protein, the solution structure of which we present here complexed with a covalently bound reversible inhibitor. Unexpectedly, the residue in the P2 position of the inhibitor induces an effective stabilization of the catalytic His-Asp hydrogen bond, by shielding that region of the protease from the solvent. This interaction appears crucial in the activation of the enzyme catalytic machinery and represents an unprecedented observation for this family of enzymes. Our data suggest that natural substrates of this serine protease could contribute to the enzyme activation by a similar induced-fit mechanism. The high degree of similarity at the His-Asp catalytic site region between HCV NS3 and other viral serine proteases suggests that this behaviour could be a more general feature for this category of viral enzymes.
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Affiliation(s)
- G Barbato
- Department of Biochemistry, IRBM 'P.Angeletti', Via Pontina km 30. 600, 00040 Pomezia, Roma, Italy.
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Narjes F, Brunetti M, Colarusso S, Gerlach B, Koch U, Biasiol G, Fattori D, De Francesco R, Matassa VG, Steinkühler C. Alpha-ketoacids are potent slow binding inhibitors of the hepatitis C virus NS3 protease. Biochemistry 2000; 39:1849-61. [PMID: 10677236 DOI: 10.1021/bi9924260] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.2] [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: 11/30/2022]
Abstract
The replication of the hepatitis C virus (HCV), an important human pathogen, crucially depends on the proteolytic maturation of a large viral polyprotein precursor. The viral nonstructural protein 3 (NS3) harbors a serine protease domain that plays a pivotal role in this process, being responsible for four out of the five cleavage events that occur in the nonstructural region of the HCV polyprotein. We here show that hexapeptide, tetrapeptide, and tripeptide alpha-ketoacids are potent, slow binding inhibitors of this enzyme. Their mechanism of inhibition involves the rapid formation of a noncovalent collision complex in a diffusion-limited, electrostatically driven association reaction followed by a slow isomerization step resulting in a very tight complex. pH dependence experiments point to the protonated catalytic His 57 as an important determinant for formation of the collision complex. K(i) values of the collision complexes vary between 3 nM and 18.5 microM and largely depend on contacts made by the peptide moiety of the inhibitors. Site-directed mutagenesis indicates that Lys 136 selectively participates in stabilization of the tight complex but not of the collision complex. A significant solvent isotope effect on the isomerization rate constant is suggestive of a chemical step being rate limiting for tight complex formation. The potency of these compounds is dominated by their slow dissociation rate constants, leading to complex half-lives of 11-48 h and overall K(i) values between 10 pM and 67 nM. The rate constants describing the formation and the dissociation of the tight complex are relatively independent of the peptide moiety and appear to predominantly reflect the intrinsic chemical reactivity of the ketoacid function.
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Affiliation(s)
- F Narjes
- Departments of Biochemistry, Medicinal Chemistry, and Computational Chemistry, Istituto di Ricerche di Biologia Molecolare (IRBM) "P. Angeletti", Via Pontina Km 30 600, 00040 Pomezia, Italy
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Ruther P, Gerlach B, Göttert J, Ilie M, Mohr J, Müller A, Oßmann C. Fabrication and characterization of microlenses realized by a modified LIGA process. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0963-9659/6/6/006] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abstract
Disseminated Langerhans-cell-histiocytosis (LCH) is most frequent in children at the age of 1-3 years, seldomly seen in adults and extremely rare in the elderly. The clinical course may be acute, subacute or chronic, progressive or stationary. Spontaneous remissions are possible, but rare. In elderly patients often the disease is at first limited to the skin before it becomes systemic. A 73-year-old female patient with chronic stationary disease of 3.5 years duration died 4 weeks after the acute dissemination of her LCH. At the beginning, her skin and liver involvement had responded to chemotherapy with etoposide. Six months later cutaneous relapse occurred with a more disseminated pattern involving the external auditory meatus. Treatment with topical nitrogen mustard followed by thalidomide produced marked improvement. As complications an irritation after topical application of nitrogen mustard and a maculo-papular exanthem after thalidomide were noted. No further visceral involvement was documented for one year. Then the patient developed acute disseminated disease and died within four weeks. As LCH may show a highly unpredictable course with progress and spontaneous remission, the prognosis is difficult. Any therapeutical procedures should be based on the actual state of the disease as determined by careful examination of the organs most commonly involved.
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Affiliation(s)
- B Gerlach
- Klinik und Poliklinik für Dermatologie, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden
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Wozel G, Blasum C, Winter C, Gerlach B. Dapsone hydroxylamine inhibits the LTB4-induced chemotaxis of polymorphonuclear leukocytes into human skin: results of a pilot study. Inflamm Res 1997; 46:420-2. [PMID: 9372316 DOI: 10.1007/s000110050215] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [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] Open
Abstract
OBJECTIVE Dapsone (4,4'diaminodiphenylsulfone) is effective in treating leprosy, chronic inflammatory conditions and opportunistic infections in HIV patients. By the oral route, the sulfone is metabolized to monoacetyldapsone (MADDS) and dapsone hydroxylamine (DDS-NOH). We have addressed the question as to whether these dapsone metabolites have anti-inflammatory properties of their own in vivo. TREATMENT AND METHODS After two weeks topical pre-treatment with MADDS (1%), DDS-NOH (1%) and clobetasol proprionate (CP; 0.05%) dissolved in acetone, as a reference, 10 ng leukotriene B4 (LTB4) were applied on the upper arms of eight healthy volunteers. After 24 h, biopsies were taken and the polymorphonuclear leukocytes (PMN) were quantified fluorometrically using elastase as marker enzyme. RESULTS MADDS did not show any inhibitory activity on trafficking of PMN compared to the corresponding control and nontreated area (untreated: 790 +/- 450 PMN/10 micrograms skin; p > 0.05, acetone: 840 +/- 578 PMN/10 micrograms skin; MADDS: 1099 +/- 556 PMN/10 micrograms skin), whereas DDS-NOH caused a statistically significant inhibition of PMN accumulation as did the reference CP (DDS-NOH: 128 +/- 143 PMN/10 micrograms skin; CP: 86 +/- 131 PMN/10 micrograms skin, p < 0.01). CONCLUSIONS These results indicate that DDS-NOH has anti-inflammatory potential which might contribute to the effectiveness of dapsone therapy.
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Affiliation(s)
- G Wozel
- Department of Dermatology, Medical Faculty Carl Gustav Carus, Dresden University of Technology, Germany
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Gerlach B, Luczak F. Ground-state energy of an exciton-(LO) phonon system in two and three dimensions: General outline and three-dimensional case. Phys Rev B Condens Matter 1996; 54:12841-12851. [PMID: 9985141 DOI: 10.1103/physrevb.54.12841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Steinbeck ZR, Heselmeyer KM, Gerlach B, Björnhagen V, Auer GU. Diagnostic impact of nuclear DNA content and proliferative activity in benign and malignant melanocytic lesions. Melanoma Res 1996; 6:37-43. [PMID: 8640068 DOI: 10.1097/00008390-199602000-00006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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: 02/01/2023]
Abstract
Nuclear DNA content was assessed, using image cytometry, in adult melanocytes in normal skin and in 20 intradermal naevi, 60 junction naevi, 107 compound naevi, 61 dysplastic naevi, 17 melanomas in situ and 101 primary malignant melanomas. Proliferation was estimated using mitotic counting and immunohistochemical staining by anti-Ki-67 (clone MIB1) monoclonal antibodies. All normal adult melanocytes; and intradermal naevi (97% junction naevi, 98% compound naevi, 66% dysplastic naevi) were diploid. Thirty-four percent of the dysplastic naevi, 88% of the melanomas in situ and 96% of the malignant melanomas were clearly aneuploid. Proliferation, as assessed by mitotic counting and MI81 index, was significantly higher in aneuploid invasive malignant melanomas than in aneuploid dysplastic naevi (P<0.0001). The results indicate that histomorphologically defined entities of melanocytic lesions are characterized by typical DNA distribution patterns. Distinct aneuploidy combined with high proliferation rates generally seem to be well correlated to an increased malignancy potential of the lesion. In dysplastic naevi, the clonic expansion of aneuploid naevus cells may be limited by host defence mechanisms. Thus, DNA aneuploidy seems to indicate increased risk of malignant transformation, but has to be combined with other data, such as proliferation, in order to differentiate more precisely between different melanocytic lesions.
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Schiwon K, Brauer HD, Gerlach B, Müller CM, Montforts FP. Potential photosensitizers for photodynamic therapy. IV. Photophysical and photochemical properties of azaporphyrin and azachlorin derivatives. J Photochem Photobiol B 1994; 23:239-43. [PMID: 8040757 DOI: 10.1016/1011-1344(94)07000-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The photophysical and photochemical properties of a 5-azaprotoporphyrin derivative ([5]AZPP), a zinc-15-azaporphyrin derivative (Zn-[15]AZIDP) and an E-Z isomeric mixture of a 5-azachlorin derivative ([5]AZCH) were studied in various solvents. The quantum yields of fluorescence phi F0, S1-T1 intersystem crossing phi T0 and singlet oxygen (1 delta g) formation phi delta were measured and the Stern-Volmer constants for the quenching of the S1 states by oxygen and the rate constants of quenching of O2(1 delta g) by the different azaporphyrinoid compounds were obtained. The fluorescence quantum yield (phi F0 = 0.23), the strong absorption in the red (lambda max = 674 nm, epsilon max = 66,000 M-1 cm-1) and the high value of the quantum yield for singlet oxygen (1 delta g) formation (phi delta = 0.65) observed for [5]AZCH recommend azachlorin derivatives as potential markers and photosensitizers for tumour therapy.
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Affiliation(s)
- K Schiwon
- Institut für Physikalische und Theoretische Chemie, Universität Frankfurt, Germany
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Gerlach B, Tercali S, Louwen F, Holzgreve W. Mammasonographie-Screening nach radikalen und brusterhaltenden Operationen. Arch Gynecol Obstet 1993. [DOI: 10.1007/bf02266172] [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: 10/24/2022]
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Miny P, Hammer P, Schloo R, Horst J, Tercanli S, Gerlach B, Holzgreve W. [Prenatal diagnosis with chorionic villi and placenta puncture biopsy in the 1st to 3d trimester of pregnancy: diagnostic value of chromosome studies]. Geburtshilfe Frauenheilkd 1991; 51:694-703. [PMID: 1743468 DOI: 10.1055/s-2007-1023818] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 12/28/2022] Open
Abstract
Chorionic villus sampling and placental biopsies became established diagnostic alternatives to amniocentesis worldwide during the 80's. Safety and accuracy are the most important criteria for the evaluation of these newer techniques as compared to amniocentesis. We report on our experience with more than 3400 chromosome analyses between 1985 and 1990 from first to third trimester of pregnancy in a single centre. Most obvious is the higher frequency of mosaicism, which is often, but not always confined to the placenta. Mosaicism accounts for the overwhelming majority of all discrepant (so-called false negative or false positive) cytogenetic findings. The most important prerequisites for diagnostic accuracy of chromosome analyses are meticulous separation of villi immediately after the sampling procedure as well as simultaneous use of direct preparation and cell culture. If mosaicism is not taken as sound evidence for foetal aneuploidy, the accuracy of cytogenetic diagnoses after chorionic villus sampling and placental biopsies is in the same range as the one after amniocentesis.
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Affiliation(s)
- P Miny
- Institut für Humangenetik der Westfälischen Wilhelms-Universität zu Münster
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Miny P, Hammer P, Gerlach B, Tercanli S, Horst J, Holzgreve W, Eiben B. Mosaicism and accuracy of prenatal cytogenetic diagnoses after chorionic villus sampling and placental biopsies. Prenat Diagn 1991; 11:581-9. [PMID: 1766934 DOI: 10.1002/pd.1970110815] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.5] [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: 12/28/2022]
Abstract
Discrepant chromosome findings in placenta and fetus (false negative and false positive) after chorionic villus sampling (CVS) are mainly due to confined mosaicism. Non-mosaic normal or abnormal chromosome counts after direct preparation and culture nearly always correctly reflect the fetal chromosome constitution. False-negative results have almost exclusively been restricted to cytotrophoblast cells not representing a fetal chromosome abnormality. Diagnosis of placental mosaicism definitely requires an adequate follow-up by amniocentesis, fetal blood sampling, or sonography before a pregnancy is terminated. When direct preparations and cultured cells are used for cytogenetic diagnoses and placental mosaicism is not taken as proof for a chromosomal abnormality in the fetus, CVS is an accurate diagnostic tool.
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Affiliation(s)
- P Miny
- Institut für Humangenetik, University of Münster, Germany
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Gerlach B, Löwen H. Analytical properties of a (Wannier) exciton-phonon system: On the exclusion of self-trapping and overscreening. Phys Rev B Condens Matter 1990; 42:3537-3545. [PMID: 9995867 DOI: 10.1103/physrevb.42.3537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Holzgreve W, Miny P, Gerlach B, Westendorp A, Ahlert D, Horst J. Benefits of placental biopsies for rapid karyotyping in the second and third trimesters (late chorionic villus sampling) in high-risk pregnancies. Am J Obstet Gynecol 1990; 162:1188-92. [PMID: 2187349 DOI: 10.1016/0002-9378(90)90014-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.0] [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: 12/30/2022]
Abstract
In a total of 301 placental biopsies in the second and third trimesters, 225 were performed because of suspicious ultrasonographic findings. In this group there was a high rate of aneuploidies (20%). As opposed to the alternative methods for rapid karyotyping, placental biopsies can easily be performed even in pregnancies with abnormal amounts of amniotic fluid. Oligohydramnios and polyhydramnios were key ultrasonographic findings in 38% of cases and were found to be associated with 22% of abnormal chromosomal findings. Suggestive ultrasonographic findings seem to justify the exclusive use of direct preparation.
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Holzgreve W, Edel G, Gerlach B, Miny P. [Diagnosis, differential diagnosis and management of fetal ovarian cysts--experiences in 9 cases]. Arch Gynecol Obstet 1989; 245:135-8. [PMID: 2802696 DOI: 10.1007/bf02417213] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Affiliation(s)
- B. Gerlach
- a Department of Mathematics , Humboldt University , DDR, 1086, Berlin
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Gerlach B, Löwen H. Absence of phonon-induced localization for the free optical polaron and the corresponding Wannier exciton-phonon system. Phys Rev B Condens Matter 1988; 37:8042-8047. [PMID: 9944135 DOI: 10.1103/physrevb.37.8042] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Gerlach B, Löwen H. Proof of the nonexistence of (formal) phase transitions in polaron systems. II. Phys Rev B Condens Matter 1987; 35:4297-4303. [PMID: 9941979 DOI: 10.1103/physrevb.35.4297] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Gerlach B, Löwen H. Proof of the nonexistence of (formal) phase transitions in polaron systems. I. Phys Rev B Condens Matter 1987; 35:4291-4296. [PMID: 9941978 DOI: 10.1103/physrevb.35.4291] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Becker W, Gerlach B, Schliffke H. Reply to "Comment on 'Monte Carlo calculation of the ground-state energy of an optical polaron.' ". Phys Rev B Condens Matter 1985; 31:6829-6830. [PMID: 9935578 DOI: 10.1103/physrevb.31.6829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Gerlach B, Solleder E, Haucke M, Harms H, Schmid M, Aus HM. Application of a high-resolution TV-microscope system to estimate the sequence of centromere separation in muntjak chromosomes. ACTA ACUST UNITED AC 1984; 5:562-71. [PMID: 6549158 DOI: 10.1002/cyto.990050603] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The sequence of centromere separation in muntjak fibroblasts was studied using a high-resolution TV-microscope system. Computer programs that identify the chromosomes as well as measure the centromere separation are described. Important prerequisites for this study are the high sampling rate and the digital processing of the two images from the red and green channel of a color TV-camera. The study demonstrates that the centromeres do not separate in a random sequence and that the separation sequence is not solely controlled by the amount of constitutive heterochromatin in the chromosomes.
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Kriete A, Romen W, Schäffer R, Harms H, Haucke M, Gerlach B, Aus HM, ter Meulen V. Computer analysis of chromatin arrangement and nuclear texture in follicular thyroid tumours. Histochemistry 1983; 78:227-30. [PMID: 6347991 DOI: 10.1007/bf00489500] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The differentiation of the thyroid glands follicular neoplasias into adenomas and carcinomas is currently done using the histological criteria recommended by WHO. This pilot study of 10 human follicular carcinomas and 10 folliculars adenomas demonstrates the possibility of a cytological classification using digital picture processing of high resolution cell images. Giemsa stained paraplast sections were scanned with a Colour-TV-camera, different channels were used with respect to staining and analyzing methods and computed with an image processing system. The computer aided cytophotometric methods detected significant differences in the chromatin arrangement and structure.
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