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Hetzel C, Schreiner S, Michel W, Schaller J, Froböse I. Konzept eines einwöchigen Gesundheitsprogramms für pflegende Angehörige gemeinsam mit ihrer pflegebedürftigen Person – „Pflegetandem“. PRÄVENTION UND GESUNDHEITSFÖRDERUNG 2021. [DOI: 10.1007/s11553-020-00821-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Gambichler T, Hartenstein I, Dreißigacker M, Stockfleth E, Stücker M, Schaller J, Schulze HJ, Becker JC, Käfferlein HU, Brüning T, Lang K. Expression of Hedgehog signalling molecules in microcystic adnexal carcinoma. Clin Exp Dermatol 2021; 46:1052-1057. [PMID: 33714217 DOI: 10.1111/ced.14634] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 02/05/2021] [Accepted: 03/11/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND Microcystic adnexal carcinoma (MAC) is a rare skin neoplasm that has not been characterized on a molecular basis. AIM To assess expression profiles of Hedgehog (HH) signalling molecules in MAC and control tumours. METHODS Immunohistochemistry was performed for Sonic Hedgehog (SHH), Indian Hedgehog (IHH), Patched 1 (PTCH1) and Smoothened (SMO) on patient MAC tissue (n = 26) and control tumour tissue, including syringoma (SyG; n = 11), trichoepithelioma (TE; n = 11) and basal cell carcinoma (BCC; n = 12) tissues. RESULTS Patched 1 and SMO immunoreactivity was significantly higher in BCC than in SyG, TE or MAC (P < 0.001 and P < 0.03, respectively). The highest IHH expression was observed in BCC and TE compared with SyG and MAC (P < 0.04). Notably, the highest SHH protein expression was observed in SyG compared with MAC, TE and even BCC (P < 0.001). In patients with MAC, SMO immunoreactivity significantly (r = 0.51; P < 0.01) correlated with PTCH1 expression. Further correlation studies did not show significant associations between the HH expression markers assessed (P > 0.05). CONCLUSION Our results indicate that alterations of the HH signalling are unlikely to play a major role in the pathogenesis of MAC, which is in contrast to the morphologically similar BCC and TE. Our observation provides additional information to the limited molecular pathology knowledge on this rare tumour.
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Gambichler T, Mahjurian-Namari M, Reininghaus L, Schmitz L, Skrygan M, Schulze HJ, Schaller J, Girolomoni G. Lysyl oxidase-like-2 mutations and reduced mRNA and protein expression in mid-dermal elastolysis. Clin Exp Dermatol 2018; 44:47-51. [PMID: 29845638 DOI: 10.1111/ced.13652] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/25/2017] [Indexed: 01/26/2023]
Abstract
BACKGROUND Mid-dermal elastolysis (MDE) is a rare skin condition, characterized by selective loss of elastic fibres in the mid dermis. The pathogenesis of MDE is still unclear. AIM To investigate expression of lysyl oxidase-like 2 (LOXL2) in a reasonable sample of patients with MDE and to search for mutations in LOXL2. METHODS We investigated archived lesional tissue of 13 patients with MDE and skin tissue samples of 10 sex- and age-matched healthy controls (HCs). Gene and protein expression of LOXL2 was investigated using real-time reverse-transcription PCR and immunohistochemistry. Mutation analysis was performed using the Sanger method. RESULTS We observed decreased LOXL2 mRNA expression in lesional skin of patients with MDE (0.48 ± 0.16) compared with healthy skin of the same patients (1.5 ± 0.51) and normal skin of HCs (1.9 ± 0.13). Compared with healthy patient skin (epidermis 2.38 ± 1.6, dermis 1.2 ± 1), LOXL2 protein expression in lesional patient skin (epidermis 1.1 ± 0.7, dermis 0.3 ± 0.45) was significantly decreased (P < 0.04 and P = 0.02, respectively). Mutation analysis of the entire LOXL2 gene could be performed for five patients, all of whom were found to have at least one mutation in the LOXL2 gene. Three of these had a mutation in the promoter region (c.967 G>C, c.1022 C>T, and c.1025 G>A, respectively), and one of them also had a mutation in the splice region of intron 11/exon 12 (IVS11-1 G>A). Of the remaining two patients, one had a mutation in exon 3 (T1391), and the other had a mutation in exon 11 (C663Y). CONCLUSIONS Our present data suggest that decreased elastin renewal due to LOXL2 mutations and consecutive reduced LOXL2 expression contribute to the pathogenesis of MDE.
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Glynn K, Schaller J. Predictors of employment outcomes for transition-age state-federal vocational rehabilitation consumers with attention-deficit/hyperactivity disorder. JOURNAL OF VOCATIONAL REHABILITATION 2017. [DOI: 10.3233/jvr-170892] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Gambichler T, Skrygan M, Reininghaus L, Schulze HJ, Schaller J, Hessam S, Colato C, Girolomoni G, Heitzer E. Lysyl oxidase-like 2 promoter hypermethylation in mid-dermal elastolysis. Br J Dermatol 2016; 175:1354-1356. [DOI: 10.1111/bjd.14666] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Herberger K, Dissemond J, Hohaus K, Schaller J, Anastasiadou Z, Augustin M. Treatment of pyoderma gangrenosum: retrospective multicentre analysis of 121 patients. Br J Dermatol 2016; 175:1070-1072. [PMID: 27060666 DOI: 10.1111/bjd.14619] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Abstract
Basal cell carcinomas are the most common primary cutaneous malignant neoplasms. The diagnosis of basal cell carcinoma represents a common and routine task for pathologists and dermatopathologists. The aim of this review is the clinical and histopathological presentation of the most common subtypes of basal cell carcinoma. Furthermore, the rare variants of basal cell carcinoma and their differential diagnoses are also discussed.
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Gambichler T, Reininghhaus L, Schaller J. Early-onset pseudoxanthoma elasticum-like papillary dermal elastolysis. J Eur Acad Dermatol Venereol 2014; 30:448-9. [DOI: 10.1111/jdv.12822] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Goubergrits L, Riesenkampff E, Yevtushenko P, Schaller J, Kertzscher U, Berger F, Kuehne T. Is MRI-Based CFD Able to Improve Clinical Treatment of Coarctations of Aorta? Ann Biomed Eng 2014; 43:168-76. [DOI: 10.1007/s10439-014-1116-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 09/06/2014] [Indexed: 01/16/2023]
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Unger F, Krueger J, Schaller J, Uhlig P, Juhl H, David K. 690: Precision cut cancer tissue slices as a preclinical drug testing platform. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50609-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Reich-Schupke S, Alm J, Altmeyer P, Bachter D, Bayerl C, Beissert S, Bieber T, Böhmer J, Dill D, Dippel E, Dücker P, Effendy I, El Gammal S, Elsner P, Enk A, Feldmann-Böddeker I, Frank H, Gehring W, Gieler U, Goebeler M, Görge T, Gollnick H, Grabbe S, Gross G, Gudat W, Happ A, Herbst R, Hermes B, Hoff NP, John SM, Jungelhülsing M, Jünger M, Kaatz M, Kapp A, Kaufmann R, Klode J, Knaber K, König A, Krieg T, Kohl P, Kowalzick L, Lehmann P, Löffler H, Maschke J, Marsch W, Mechtel D, Mohr P, Moll I, Müller M, Nashan D, Ockenfels HM, Peter RU, Pillekamp H, Rompel R, Ruzicka T, Salfeld K, Sander C, Schaller J, Scharffetter-Kochanek K, Schuler G, Schulze HJ, Schwarz T, Splieth B, Stege H, Stolz W, Strölin A, Tran H, Tronnier M, Ulrich J, Vogt T, Wagner G, Welzel J, Willgeroth T, Wollina U, Zillikens D, Zouboulis CC, Zuberbier T, Zutt M, Stücker M. [Phlebology in German departments of dermatology. An analysis on behalf of the German Society of Phlebology]. Hautarzt 2013; 64:685-94. [PMID: 24022632 DOI: 10.1007/s00105-013-2623-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND Phlebologic diseases have become extremely common and have major socio-economic impact. However, the percentage of dermatologists working in phlebology appears to be decreasing according to the data of the German Society of Phlebology (DGP). METHODS To investigate the reasons for this development, we--on behalf of the DGP--sent a questionnaire to 120 German Departments of Dermatology in autumn 2012. RESULTS In 76 returned questionnaires, the number of physicians with additional fellowship training in phlebology averaged 1.5; the average number of those who fulfill the criteria for training fellows in phlebology was 0.9. In 71.1 % of the departments there was a phlebologist. A special phlebologic outpatient clinic existed in 73.7 % of the departments. Sonography with Doppler (89.5 %) and duplex (86.8 %) was used as the most frequent diagnostic tool. For therapy, compression (94.7 %), sclerotherapy (liquid 78.9 %, foam 63.2 %, catheter 18.4 %), endoluminal thermic procedures (radio wave 28.9 %, laser 17.1 %) and surgery (especially crossectomy and stripping 67.1 %, phlebectomy of tributaries 75 %) were used. The average number of treatments was very heterogenous in the different departments. CONCLUSIONS Phlebology definitely plays an important role in dermatology. Most departments fulfill the formal criteria for the license to conduct advanced training in phlebology. A wide spectrum of phlebological diagnostic and therapeutic procedures is available.
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Schaller J, Kragh T, Reininger A, Goubergrits L, Kertzscher U, Spannagl M, Affeld K. Biocompatibility Material Test for Cardiovascular Devices using Stagnation Point Flow. ACTA ACUST UNITED AC 2013; 58 Suppl 1:/j/bmte.2013.58.issue-s1-O/bmt-2013-4366/bmt-2013-4366.xml. [PMID: 24043091 DOI: 10.1515/bmt-2013-4366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Böttger R, Feibicke M, Schaller J, Dudel G. Effects of low-dosed imidacloprid pulses on the functional role of the caged amphipod Gammarus roeseli in stream mesocosms. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2013; 93:93-100. [PMID: 23664296 DOI: 10.1016/j.ecoenv.2013.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2013] [Revised: 04/04/2013] [Accepted: 04/09/2013] [Indexed: 06/02/2023]
Abstract
Effects of two series of imidacloprid pulses on caged amphipods (Gammarus roeseli) and their shredder efficiency for litter decomposition were studied for 70 days as part of a comprehensive stream mesocosm experiment. The duration of each imidacloprid pulse of 12µgL(-1) was 12h. About 250mL cages with an initial stock of 10 adult gammarids together with different conditioned litter substrates were used. Beside alder leaves (Alnus glutinosa), straw (× Triticosecale) was also used in different trials and tested for its suitability to serve as litter substrate. Results from tracer and microprobe measurements approved the suitability of the test system under low-flow condition of 10cms(-1) in the surrounding stream water. Population development followed a logistic growth function with a carrying capacity of 200 Ind cage(-1) for alder and 161 for straw. In the course of the study, the F1 generation reached sexual maturity and F2 offspring appeared. Increased nitrogen contents of gammarid-free trials compared to stocked ones after 70 days indicated that biofilm on both substrates was an important food source for G. roeseli. However, increased shredding activity by gammarids was only detected for alder during the second pulse series. During the remaining time and also for straw, losses of coarse particular organic matter were quite constant and slow indicating the dominance of transport limited decomposition processes on the litter surfaces. No effect of imidacloprid pulses on population levels and litter decomposition could be detected. However, the number of brood carrying females was reduced in the treatments compared to the control groups in the last 3 weeks of the study. In conclusion, repeated low-level and short-term exposition may have adverse long-term effects on G. roeseli in the field with regard to both the population size and the functional role as key shredder.
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Schaller J, Kertzscher U, Petz C, Hege HC, Spuler A, Goubergrits L. Reproducibility of Image-Based Analysis of Cerebral Aneurysm Geometry and Hemodynamics: An In-Vitro Study of Magnetic Resonance Imaging, Computed Tomography, and Three-Dimensional Rotational Angiography. J Neurol Surg A Cent Eur Neurosurg 2013; 74:294-302. [DOI: 10.1055/s-0033-1342937] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Schreml S, Weber BH, Schröder J, Siegmund H, Schaller J, Vogt T, Landthaler M, Schönbuchner I, Röcken C, Babilas P. Familial primary localized cutaneous amyloidosis with an oncostatin M receptor-β mutation, Pro694Leu. Clin Exp Dermatol 2013; 38:932-5. [DOI: 10.1111/ced.12160] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/07/2013] [Indexed: 11/27/2022]
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Böttger R, Schaller J, Mohr S. Closer to reality--the influence of toxicity test modifications on the sensitivity of Gammarus roeseli to the insecticide imidacloprid. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2012; 81:49-54. [PMID: 22575057 DOI: 10.1016/j.ecoenv.2012.04.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 04/09/2012] [Accepted: 04/14/2012] [Indexed: 05/31/2023]
Abstract
Laboratory toxicity test designs are far from reality and therefore extrapolations to field situations may be more difficult. In laboratory experiments with the amphipod Gammarus roeseli exposed to the insecticide imidacloprid it was investigated if test conditions closer to reality influences its sensitivity and if it is possible to extrapolate results from these laboratory tests to results from a stream mesocosm study. Experiments were run by varying medium, temperature, size, and seasonal origin of gammarids. Age and seasonal aspects had strongest effects with juveniles and animals taken from a spring population being most sensitive with an EC₅₀ (96 h) of 14.2 μg L⁻¹ imidacloprid. The test designs closest to the conditions in the stream mesocosms reflected best the results in mesocosms study on basis of LOEC values. However, the EC(x) extrapolation failed to predict the effects of short term imidacloprid pulses in the field.
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Schaller J, Brackhage C, Gessner MO, Bäuker E, Gert Dudel E. Silicon supply modifies C:N:P stoichiometry and growth of Phragmites australis. PLANT BIOLOGY (STUTTGART, GERMANY) 2012; 14:392-6. [PMID: 22136652 DOI: 10.1111/j.1438-8677.2011.00537.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Silicon is a non-essential element for plant growth. Nevertheless, it affects plant stress resistance and in some plants, such as grasses, it may substitute carbon (C) compounds in cell walls, thereby influencing C allocation patterns and biomass production. How variation in silicon supply over a narrow range affects nitrogen (N) and phosphorus (P) uptake by plants has also been investigated in some detail. However, little is known about effects on the stoichiometric relationships between C, N and P when silicon supply varies over a broader range. Here, we assessed the effect of silicon on aboveground biomass production and C:N:P stoichiometry of common reed, Phragmites australis, in a pot experiment in which three widely differing levels of silicon were supplied. Scanning electron microscopy (SEM) showed that elevated silicon supply promoted silica deposition in the epidermis of Phragmites leaves. This resulted in altered N:P ratios, whereas C:N ratios changed only slightly. Plant growth was slightly (but not significantly) enhanced at intermediate silicon supply levels but significantly decreased at high levels. These findings point to the potential of silicon to impact plant growth and elemental stoichiometry and, by extension, to affect biogeochemical cycles in ecosystems dominated by Phragmites and other grasses and sedges.
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Goubergrits L, Schaller J, Kertzscher U, van den Bruck N, Poethkow K, Petz C, Hege HC, Spuler A. Statistical wall shear stress maps of ruptured and unruptured middle cerebral artery aneurysms. J R Soc Interface 2011; 9:677-88. [PMID: 21957117 DOI: 10.1098/rsif.2011.0490] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Haemodynamics and morphology play an important role in the genesis, growth and rupture of cerebral aneurysms. The goal of this study was to generate and analyse statistical wall shear stress (WSS) distributions and shapes in middle cerebral artery (MCA) saccular aneurysms. Unsteady flow was simulated in seven ruptured and 15 unruptured MCA aneurysms. In order to compare these results, all geometries must be brought in a uniform coordinate system. For this, aneurysms with corresponding WSS data were transformed into a uniform spherical shape; then, all geometries were uniformly aligned in three-dimensional space. Subsequently, we compared statistical WSS maps and surfaces of ruptured and unruptured aneurysms. No significant (p > 0.05) differences exist between ruptured and unruptured aneurysms regarding radius and mean WSS. In unruptured aneurysms, statistical WSS map relates regions with high (greater than 3 Pa) WSS to the neck region. In ruptured aneurysms, additional areas with high WSS contiguous to regions of low (less than 1 Pa) WSS are found in the dome region. In ruptured aneurysms, we found significantly lower WSS. The averaged aneurysm surface of unruptured aneurysms is round shaped, whereas the averaged surface of ruptured cases is multi-lobular. Our results confirm the hypothesis of low WSS and irregular shape as the essential rupture risk parameters.
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Carlson JA, Schaller J, Sell S. Comment on: Evidence of lifetime susceptibility to Tropheryma whipplei in patients with Whipple's disease. J Antimicrob Chemother 2011; 66:2681-2. [DOI: 10.1093/jac/dkr347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kofler M, Kumru H, Schaller J. P1.5 The effect of gender on prepulse inhibition of the blink reflex. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60196-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kofler M, Kumru H, Schaller J. The effect of age on blink reflex excitability recovery. KLIN NEUROPHYSIOL 2011. [DOI: 10.1055/s-0031-1272772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Glander HJ, Schaller J. Localisation of enzymes in live spermatozoa by CellProbe™ reagents (preliminary results). Andrologia 2009. [DOI: 10.1111/j.1439-0272.1999.tb02840.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Dietrich V, Schaller J, Kunze J. [Cutaneous malignant peripheral nerve sheath tumor in neurofibromatosis type 1]. Hautarzt 2009; 60:830-3. [PMID: 19221702 DOI: 10.1007/s00105-008-1700-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Patients with neurofibromatosis have an increased risk of developing malignant tumors in comparison to the general population. We describe a woman who developed a malignant peripheral nerve sheath tumor in a pre-existing neurofibroma.
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Iversen V, Drews A, Schaller J, Lesjean B, Kraume M. Verringerung des Foulings in Membranbelebungsanlagen durch Zugabe von Filtrationshilfsmitteln. CHEM-ING-TECH 2007. [DOI: 10.1002/cite.200700135] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Drews A, Arellano-Garcia H, Schöneberger J, Schaller J, Wozny G, Kraume M. Optimierung von Filtrationsprozessen in MBR-Anlagen mittels automatisierter Mechanismenerkennung. CHEM-ING-TECH 2007. [DOI: 10.1002/cite.200750352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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