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Wiens M, Niem T, Elkhooly TA, Steffen R, Neumann S, Schloßmacher U, Müller WEG. Osteogenic potential of a biosilica-coated P(UDMA-co-MPS) copolymer. J Mater Chem B 2013; 1:3339-3343. [DOI: 10.1039/c3tb20325e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Kreuter M, Vansteenkiste J, Fischer JR, Eberhardt W, Zabeck H, Kollmeier J, Serke M, Frickhofen N, Reck M, Engel-Riedel W, Neumann S, Thomeer M, Schumann C, De Leyn P, Graeter T, Stamatis G, Zuna I, Griesinger F, Thomas M. Randomized phase 2 trial on refinement of early-stage NSCLC adjuvant chemotherapy with cisplatin and pemetrexed versus cisplatin and vinorelbine: the TREAT study. Ann Oncol 2012; 24:986-92. [PMID: 23161898 DOI: 10.1093/annonc/mds578] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Adjuvant chemotherapy is beneficial in non-small-cell lung cancer (NSCLC). However, balancing toxicity and efficacy mandates improvement. PATIENTS AND METHODS Patients with completely resected stages IB-pT3N1 NSCLC were randomly assigned to either four cycles cisplatin (C: 50 mg/m(2) day (d)1 + 8) and vinorelbine (V: 25 mg/m(2) d1, 8, 15, 22) q4 weeks or four cycles cisplatin (75 mg/m(2) d1) and pemetrexed (Px: 500 mg/m(2) d1) q3 weeks. Primary objective was the clinical feasibility rate (no grade (G)4 neutropenia/thrombocytopenia or thrombocytopenia with bleeding, no G3/4 febrile neutropenia or non-hematological toxicity; no premature withdrawal/death). Secondary objectives were drug delivery and efficacy. RESULTS One hundred and thirty two patients were randomized (stages: 38% IB, 10% IIA, 47% IIB, 5% pT3pN1; histology: 43% squamous, 57% non-squamous). The feasibility rates were 95.5% (cisplatin and pemetrexed, CPx) and 75.4% (cisplatin and vinorelbine, CVb) (P = 0.001); hematological G3/4 toxic effects were 10% (CPx) and 74% (CVb) (P < 0.001), non-hematological toxic effects were comparable (33% and 31%, P = 0.798). Delivery of total mean doses was 90% of planned with CPx, but 66% (cisplatin) and 64% (vinorelbine) with CVb (P < 0.0001). The median number of cycles [treatment time (weeks)] was 4 for CPx (11.2) and 3 for CVb (9.9). Time to withdrawal from therapy differed significantly between arms favoring CPx (P < 0.001). CONCLUSION Adjuvant chemotherapy with CPx is safe and feasible with less toxicity and superior dose delivery compared with CVb.
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Kluters S, Neumann S, von Hirschheydt T, Grossmann A, Schaubmar A, Frech C. Mechanism of improved antibody aggregate separation in polyethylene glycol-modulated cation exchange chromatography. J Sep Sci 2012; 35:3130-8. [DOI: 10.1002/jssc.201200715] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 08/20/2012] [Accepted: 08/21/2012] [Indexed: 11/10/2022]
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Schoenenberger AW, Stortecky S, Neumann S, Moser A, Juni P, Carrel T, Huber C, Gandon M, Bischoff S, Schoenenberger CM, Stuck AE, Windecker S, Wenaweser P. Predictors of functional decline in elderly patients undergoing transcatheter aortic valve implantation (TAVI). Eur Heart J 2012; 34:684-92. [DOI: 10.1093/eurheartj/ehs304] [Citation(s) in RCA: 236] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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Kovtun A, Neumann S, Neumeier M, Urch H, Heumann R, Gepp MM, Wallat K, Koeller M, Zimmermann H, Epple M. Nanoparticle-Mediated Gene Transfer From Electrophoretically Coated Metal Surfaces. J Phys Chem B 2012; 117:1550-5. [DOI: 10.1021/jp303448v] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kreuter M, Vansteenkiste J, Fischer JR, Eberhardt W, Zabeck H, Kollmeier J, Serke M, Frickhofen N, Reck M, Engel-Riedel W, Neumann S, Thomeer M, Schumann C, De Leyn P, Graeter T, Stamatis G, Zuna I, Griesinger F, Thomas M. Randomisierte Phase 2 Studie zur Verbesserung der adjuvanten Chemotherapie beim frühen NSCLC – Vergleich Cisplatin/Pemetrexed (CPx) mit Cisplatin/Vinorelbine (CVb) – erweiterte Ergebnisse der TREAT Studie. Pneumologie 2012. [DOI: 10.1055/s-0032-1302560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Gasser G, Pinto A, Neumann S, Sosniak AM, Seitz M, Merz K, Heumann R, Metzler-Nolte N. Synthesis, characterisation and bioimaging of a fluorescent rhenium-containing PNA bioconjugate. Dalton Trans 2011; 41:2304-13. [PMID: 22183093 DOI: 10.1039/c2dt12114j] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A new rhenium tricarbonyl complex of a bis(quinoline)-derived ligand (2-azido-N,N-bis((quinolin-2-yl)methyl)ethanamine, L-N(3)), namely [Re(CO)(3)(L-N(3))]Br was synthesized and characterized in-depth, including by X-ray crystallography. [Re(CO)(3)(L-N(3))]Br exhibits a strong UV absorbance in the range 300-400 nm with a maximum at 322 nm, and upon photoexcitation, shows two distinct emission bands at about 430 and 560 nm in various solvents (water, ethylene glycol). [Re(CO)(3)(L-N(3))]Br could be conjugated, on a solid phase, to a peptide nucleic acid (PNA) oligomer using the copper(I)-catalyzed azide-alkyne cycloaddition reaction (Cu-AAC, "click" chemistry) and an alkyne-containing PNA building block to give Re-PNA. It was demonstrated that upon hybridisation with a complementary DNA strand (DNA), the position of the maxima and emission intensity for the hybrid Re-PNA·DNA remained mainly unchanged compared to those of the single strand Re-PNA. The rhenium-containing PNA oligomer Re-PNA could be then mediated in living cells where they have been shown to be non-toxic contrary to the general notion that organometallic compounds are usually unstable under physiological conditions and/or cytotoxic. Furthermore, Re-PNA could be detected in living cells using fluorescent microscopy.
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Gasser G, Neumann S, Ott I, Seitz M, Heumann R, Metzler-Nolte N. Preparation and Biological Evaluation of Di-Hetero-Organometallic-Containing PNA Bioconjugates. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100734] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Neumann S, Haverkamp S, Auferkorte ON. Intrinsically photosensitive ganglion cells of the primate retina express distinct combinations of inhibitory neurotransmitter receptors. Neuroscience 2011; 199:24-31. [PMID: 22044923 DOI: 10.1016/j.neuroscience.2011.10.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 09/27/2011] [Accepted: 10/17/2011] [Indexed: 10/16/2022]
Abstract
Intrinsically-photosensitive retinal ganglion cells (ipRGCs) express the photopigment melanopsin and function as irradiance detectors, responsible for crucial non-image forming visual functions. In addition to their intrinsic photosensitivity, ipRGCs are also activated by synaptic inputs originating at the classical photoreceptors, rods and cones. Little is known about inhibition through these retinal pathways, despite ipRGCs receiving massive synaptic inputs from inhibitory amacrine interneurons. We performed a wide anatomical screening for neurotransmitter receptors possibly involved in the inhibitory modulation of ipRGCs in the macaque retina. We investigated both subtypes of primate ipRGCs described so far and report that outer-stratifying (M1) cells possess mainly GlyR α2 and GABA(A)R α3 subunits, while inner-stratifying (M2) cells are overall subject to less inhibitory modulation. Our results suggest that M1 and M2 ipRGC subtypes are modulated via distinct inhibitory intraretinal circuits.
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Hansch A, Pfeil A, Neumann R, Neumann S, Mayer TE, Wolf G. Renal ablation in patients with end-stage renal disease. VASA 2011; 40:308-14. [PMID: 21780055 DOI: 10.1024/0301-1526/a000120] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Transarterial catheter embolization of the kidneys (TAE) is a minimally invasive, image-guided procedure. In this study outcome and TAE-related complications of the patients who underwent TAE of the kidneys were evaluated retrospectively. PATIENTS AND METHODS Between August 2003 and August 2009, 11 patients underwent selective percutaneous transarterial renal embolization for end stage renal disease associated with uncontrolled hypertension, nephrotic syndrome, bleeding or malignancy. TAE of renal arteries was performed using different embolization agents. RESULTS Successful renal embolization was possible in all 21 kidneys. All patients became anuric. Non-target embolization was not detectable. Nevertheless, all patients developed some degree of postembolization symptoms including nausea, vomiting, fever or pain. A typical finding after embolization was an increase in the C-reactive protein. CONCLUSIONS Renal embolization is rarely done but should be considered as an alternative to surgical nephrectomy in patients with end stage renal disease due to the lesser invasiveness. Our study confirms the safety and effectivity of percutaneous renal embolization in patients with ESRD. We were able to control the hypertension, nephrotic syndrome, and bleeding caused by ESRD.
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Kreuter M, Vansteenkiste JF, Fischer JR, Eberhardt WEE, Zabeck H, Kollmeier J, Serke MH, Frickhofen N, Reck M, Engel-Riedel W, Neumann S, Thomeer M, Schumann C, Deleyn P, Graeter T, Stamatis G, Zuna I, Griesinger F, Thomas M. Randomized phase II trial on refinement of early-stage NSCLC adjuvant chemotherapy with cisplatin and pemetrexed (CPx) versus cisplatin and vinorelbine (CVb): TREAT. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.7002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Neumann S, Gershengorn MC. Small molecule TSHR agonists and antagonists. ANNALES D'ENDOCRINOLOGIE 2011; 72:74-6. [PMID: 21511239 DOI: 10.1016/j.ando.2011.03.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
TSH activates the TSH receptor (TSHR) thereby stimulating the function of thyroid follicular cells (thyrocytes) leading to biosynthesis and secretion of thyroid hormones. Because TSHR is involved in several thyroid pathologies, there is a strong rationale for the design of small molecule "drug-like" ligands. Recombinant human TSH (rhTSH, Thyrogen(®)) has been used in the follow-up of patients with thyroid cancer to increase the sensitivity for detection of recurrence or metastasis. rhTSH is difficult to produce and must be administered by injection. A small molecule TSHR agonist could produce the same beneficial effects as rhTSH but with greater ease of oral administration. We developed a small molecule ligand that is a full agonist at TSHR. Importantly for its clinical potential, this agonist elevated serum thyroxine and stimulated thyroidal radioiodide uptake in mice after its absorption from the gastrointestinal tract following oral administration. Graves' disease (GD) is caused by persistent, unregulated stimulation of thyrocytes by thyroid-stimulating antibodies (TSAbs) that activate TSHR. We identified the first small molecule TSHR antagonists that inhibited TSH- and TSAb-stimulated signalling in primary cultures of human thyrocytes. Our results provide proof-of-principle for effectiveness of small molecule agonists and antagonists for TSHR. We suggest that these small molecule ligands are lead compounds for the development of higher potency ligands that can be used as probes of TSHR biology with therapeutic potential.
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Noonan K, Martin P, Scott A, Kuhn G, Neumann S. Do Anti-inflammatory Agents Promote Linear Ablation Lesion Discontinuities? An Electrophysiological Examination. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.229] [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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Kiewnick S, Neumann S, Sikora RA, Frey JE. Effect of Meloidogyne incognita inoculum density and application rate of Paecilomyces lilacinus strain 251 on biocontrol efficacy and colonization of egg masses analyzed by real-time quantitative PCR. PHYTOPATHOLOGY 2011; 101:105-112. [PMID: 20822430 DOI: 10.1094/phyto-03-10-0090] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The fungal biocontrol agent, Paecilomyces lilacinus strain 251 (PL251), was evaluated for its potential to control the root-knot nematode Meloidogyne incognita on tomato at varying application rates and inoculum densities. Conversely to previous studies, significant dose-response relationships could not be established. However, we demonstrated that a preplanting soil treatment with the lowest dose of commercially formulated PL251 (2 × 10(5) CFU/g soil) was already sufficient to reduce root galling by 45% and number of egg masses by 69% when averaged over inoculum densities of 100 to 1,600 eggs and infective juveniles per 100 cm(3) of soil. To determine the role of colonization of M. incognita egg masses by PL251 for biocontrol efficacy, a real-time quantitative polymerase chain reaction (PCR) assay with a detection limit of 10 CFU/egg mass was used. Real-time PCR revealed a significant relationship between egg mass colonization by PL251 and the dose of product applied to soil but no correlation was found between fungal density and biocontrol efficacy or nematode inoculum level. These results demonstrate that rhizosphere competence is not the key mode of action for PL251 in controlling M. incognita on tomato.
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Karassek S, Berghaus C, Schwarten M, Goemans CG, Ohse N, Kock G, Jockers K, Neumann S, Gottfried S, Herrmann C, Heumann R, Stoll R. Ras homolog enriched in brain (Rheb) enhances apoptotic signaling. J Biol Chem 2010; 285:33979-91. [PMID: 20685651 PMCID: PMC2962498 DOI: 10.1074/jbc.m109.095968] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2009] [Revised: 07/19/2010] [Indexed: 12/18/2022] Open
Abstract
Rheb is a homolog of Ras GTPase that regulates cell growth, proliferation, and regeneration via mammalian target of rapamycin (mTOR). Because of the well established potential of activated Ras to promote survival, we sought to investigate the ability of Rheb signaling to phenocopy Ras. We found that overexpression of lipid-anchored Rheb enhanced the apoptotic effects induced by UV light, TNFα, or tunicamycin in an mTOR complex 1 (mTORC1)-dependent manner. Knocking down endogenous Rheb or applying rapamycin led to partial protection, identifying Rheb as a mediator of cell death. Ras and c-Raf kinase opposed the apoptotic effects induced by UV light or TNFα but did not prevent Rheb-mediated apoptosis. To gain structural insight into the signaling mechanisms, we determined the structure of Rheb-GDP by NMR. The complex adopts the typical canonical fold of RasGTPases and displays the characteristic GDP-dependent picosecond to nanosecond backbone dynamics of the switch I and switch II regions. NMR revealed Ras effector-like binding of activated Rheb to the c-Raf-Ras-binding domain (RBD), but the affinity was 1000-fold lower than the Ras/RBD interaction, suggesting a lack of functional interaction. shRNA-mediated knockdown of apoptosis signal-regulating kinase 1 (ASK-1) strongly reduced UV or TNFα-induced apoptosis and suppressed enhancement by Rheb overexpression. In conclusion, Rheb-mTOR activation not only promotes normal cell growth but also enhances apoptosis in response to diverse toxic stimuli via an ASK-1-mediated mechanism. Pharmacological regulation of the Rheb/mTORC1 pathway using rapamycin should take the presence of cellular stress into consideration, as this may have clinical implications.
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Wiedemann M, John S, Schlüter M, Kutschera D, Riener FX, Döring W, Neumann S, Eisenlauer J. Einsatz des Strahlzonen-Schlaufenreaktors bei stofftransportlimitierten, mehrphasigen chemischen Reaktionen. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.200900164] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Cramer U, Henkel M, Käsbach C, Neumann S, Reitz T. Sind neue Versorgungsformen wie Selektivverträge, MVZ, §116 b SGB V, Integrierte Versorgung Bedrohung oder Chance für die Radiologie? ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252409] [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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Klesing J, Chernousova S, Kovtun A, Neumann S, Ruiz L, Gonzalez-Calbet JM, Vallet-Regi M, Heumann R, Epple M. An injectable paste of calcium phosphate nanorods, functionalized with nucleic acids, for cell transfection and gene silencing. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/c0jm01130d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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69
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Epple M, Ganesan K, Heumann R, Klesing J, Kovtun A, Neumann S, Sokolova V. Application of calcium phosphatenanoparticles in biomedicine. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b910885h] [Citation(s) in RCA: 263] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Neumann S, Schmidt W, Niendorf M, Schmitz K. Verifizierung eines sonographischen Meßverfahrens zur Bewertung des Schrauben-Knochen-Verbundes anhand mechanischer Parameter. BIOMED ENG-BIOMED TE 2009. [DOI: 10.1515/bmte.1998.43.s1.264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Neumann S, Kovtun A, Dietzel ID, Epple M, Heumann R. The use of size-defined DNA-functionalized calcium phosphate nanoparticles to minimise intracellular calcium disturbance during transfection. Biomaterials 2009; 30:6794-802. [PMID: 19766304 DOI: 10.1016/j.biomaterials.2009.08.043] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Accepted: 08/27/2009] [Indexed: 11/25/2022]
Abstract
Calcium phosphate-based transfection methods are frequently used to transfer DNA into living cells. However, it has so far not been studied in detail to what extend the different transfection methods lead to a net calcium uptake. Upon subsequent resolution of the calcium phosphate, intracellular free ionic calcium-surges could result, inducing as side effect various physiological responses that may finally result in cell death. Here we investigated the overall calcium uptake by the human bladder carcinoma cell line T24 during the standard calcium phosphate transfection method and also during transfection with custom-made calcium phosphate/DNA nanoparticles by isotope labelling with (45)calcium. (45)Calcium uptake was strongly increased after 7h of standard calcium phosphate transfection but not if the transfection was performed with calcium phosphate nanoparticles. Time lapse imaging microscopy using the calcium-sensitive dye Fura-2 revealed large transient increases of the intracellular free calcium level during the standard calcium phosphate transfection but not if calcium phosphate nanoparticles were used. Consistently, the viability of cells transfected by calcium phosphate/DNA nanoparticles was not changed, in remarkable contrast to the standard method where considerable cell death occurred.
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Schön J, Neumann S, Wildt DE, Pukazhenthi BS, Jewgenow K. Localization of Oestrogen Receptors in the Epididymis During Sexual Maturation of the Domestic Cat. Reprod Domest Anim 2009; 44 Suppl 2:294-301. [DOI: 10.1111/j.1439-0531.2009.01391.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Schwesig R, Neumann S, Richter D, Kauert R, Becker S, Esperer H, Leuchte S. Der Einfluss des Therapeutischen Reitens auf den Gang und die Haltungsregulation. SPORTVERLETZUNG-SPORTSCHADEN 2009; 23:84-94. [DOI: 10.1055/s-0028-1109465] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kaasch A, Rieg S, Peyerl-Hoffmann G, Neumann S, Peppinghaus G, Kern W, Seifert H. 070 DEVELOPMENT OF CRITERIA FOR THE INDICATION OF TRANSESOPHAGEAL ECHOCARDIOGRAPHY IN STAPHYLOCOCCUS AUREUS BACTEREMIA. Int J Antimicrob Agents 2009. [DOI: 10.1016/s0924-8579(09)70089-5] [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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Radtke H, Lindenau S, Holbach B, Neumann S, Kiesewetter H. Durchflußzytometrische Messung der Leukozytenzahl in Vollblut und Blutkomponenten. Transfus Med Hemother 2009. [DOI: 10.1159/000223207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Dudenbostel KJ, Neumann S, Baumgartner BG, Brenig B. Exclusion of a T>C sequence variant in exon 7 of the canine G(alphas) gene (GNAS1) as a causal gene for liver cancer. Anim Genet 2009; 40:792. [PMID: 19422361 DOI: 10.1111/j.1365-2052.2009.01901.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]
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Schill R, Neumann S, Reuner A, Brümmer F. Detection of DNA damage with single-cell gel electrophoresis in anhydrobiotic tardigrades. Comp Biochem Physiol A Mol Integr Physiol 2008. [DOI: 10.1016/j.cbpa.2008.05.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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78
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Walter H, Neumann S. Zur Häufigkeit der Eigenschaft Gm(r) im südwestdeutschen Raum. Hum Hered 2008. [DOI: 10.1159/000151891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Fachinger J, Bukaemskiy A, Neumann S, Titov M. Embedding of coated particles in SiC. NUCLEAR ENGINEERING AND DESIGN 2008. [DOI: 10.1016/j.nucengdes.2008.01.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Simon H, Günther H, Bader J, Neumann S. Chiral products from non-pyridine nucleotide-dependent reductases and methods for NAD(P)H regeneration. CIBA FOUNDATION SYMPOSIUM 2008; 111:97-111. [PMID: 3893942 DOI: 10.1002/9780470720929.ch8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Enoate reductase (EC 1.3.1.31) from a Clostridium tyrobutyricum strain catalyses the stereospecific reduction of many different alpha, beta-unsaturated carboxylates, aldehydes and even some ketones. The enzyme accepts electrons from NADH and, 1.5 times faster, from reduced methyl viologen (1,1'-dimethyl-4,4'-bipyridinium). Another new type of non-pyridine nucleotide-dependent reductase has an extremely broad substrate specificity for 2-oxo-carboxylates and 2-oxo-dicarboxylates. In crude extracts from Proteus mirabilis and Proteus vulgaris, specific activities of 2-12 mumol product formed per mg protein per min can be found when reduced methyl or benzyl viologen is used as electron donor. The products are (2R)-hydroxy acids. Enoate reductase and 2-oxo-carboxylate reductase are suitable for electro-enzymic reductions in which catalytic amounts of viologens are continuously reduced in an electrochemical cell. This procedure has three advantages: (1) regeneration of NAD(P)H by a second enzyme and substrate is not required, (2) the unstable pyridine nucleotides are not required in the reaction mixture, and (3) the rate of the reaction can be observed continuously by measuring an electric current. Several yeasts, as well as aerobic and anaerobic bacteria, catalyse the reduction of NAD(P)+ by reduced methyl viologen. Such cells can be used for electro-microbial reductions when only pyridine nucleotide-dependent reductases are present. Information about the enzymes which catalyse the reduction of NAD(P)+ at the expense of reduced methyl viologen is given.
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Ganesan K, Kovtun A, Neumann S, Heumann R, Epple M. Calcium phosphate nanoparticles: colloidally stabilized and made fluorescent by a phosphate-functionalized porphyrin. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b805366a] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Neumann S, Welling H, Thuere S. Insulin-like Growth Factor I Concentration in Dogs with Inflammatory and Neoplastic Liver Diseases. ACTA ACUST UNITED AC 2007; 54:612-7. [DOI: 10.1111/j.1439-0442.2007.00982.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kandert S, Luke Y, Kleinhenz T, Neumann S, Lu W, Jaeger VM, Munck M, Wehnert M, Muller CR, Zhou Z, Noegel AA, Dabauvalle MC, Karakesisoglou I. Nesprin-2 giant safeguards nuclear envelope architecture in LMNA S143F progeria cells. Hum Mol Genet 2007. [DOI: 10.1093/hmg/ddm338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Oberlinner C, Lang S, Germann C, Trauth B, Eberle F, Pluto R, Neumann S, Zober A. Prävention von Übergewicht und Adipositas am Arbeitsplatz. DAS GESUNDHEITSWESEN 2007; 69:385-92. [PMID: 17701837 DOI: 10.1055/s-2007-984484] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND The rise in the prevalence of overweight and obesity and their associated diseases is leading to substantial health and socio-economic problems in industrialized countries. The Commission of the European Community indicates that workplaces are a setting that has a strong potential for health promotion and disease prevention. Against this background the department of occupational medicine and health protection of the BASF Aktiengesellschaft initiated a health promotion campaign "Trim down the pounds--Losing weight without losing your mind" on the prevention of overweight and obesity at the workplace. SUBJECTS AND METHODS The target group included all overweight and obese employees among the 34,000 employees at the BASF site in Ludwigshafen. Overweight and obese employees should reduce weight (either in lowering their body mass index (BMI) by 2 points or by reducing their BMI to less than 25 kg/m2) over a period of nine months assisted by a health promotion programme and normal-weight colleagues (weight-loss helpers). All participants were monitored by occupational physicians, this was also to detect obesity-related diseases. A prize money of euro 10,000 for successful participants and their weight-loss helpers was drawn by lot. RESULTS A total of 2,062 employees took part in the health promotion campaign (1,313 overweight and obese employees and 749 weight-loss helpers). 708 overweight participants attended the weight-control measurement after nine months, 658 people had succeeded in reducing their body weight, 440 of them had lowered their BMI by more than 2 points. 83% of those attending the weight-control measurement had a weight-loss helper. Medical benefits were shown by improvement of laboratory parameters and detection of obesity-related diseases. CONCLUSION The health promotion campaign "Trim down the pounds" demonstrated that the workplace is a promising focal point for conducting prevention programmes based on the proximity of occupational medical services to the employee. Prevention of overweight and obesity in the workplace is possible by promoting healthy diets in workplace-canteens and physical activity programs like "walking in the lunch break". These programs are substantially strengthened by occupational medical activities in detecting obesity-related diseases. Health promotion at the workplace can be viewed as a benefit to employee and employer alike with employers benefiting from a reduction of lost productivity costs.
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Schaffeld M, Haberkamp M, Schätzlein S, Neumann S, Hunzinger C. A novel and ancient group of type I keratins with members in bichir, sturgeon and gar. Front Zool 2007; 4:16. [PMID: 17553169 PMCID: PMC1896152 DOI: 10.1186/1742-9994-4-16] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2006] [Accepted: 06/06/2007] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Vertebrate epithelial cells typically express a specific set of keratins. In teleosts, keratins are also present in a variety of mesenchymal cells, which usually express vimentin. Significantly, our previous studies revealed that virtually all known teleost keratins evolved independently from those present in terrestrial vertebrates. To further elucidate the evolutionary scenario that led to the large variety of keratins and their complex expression patterns in present day teleosts, we have investigated their presence in bichir, sturgeon and gar. RESULTS We have discovered a novel group of type I keratins with members in all three of these ancient ray-finned fish, but apparently no counterparts are present in any other vertebrate class so far investigated, including the modern teleost fish. From sturgeon and gar we sequenced one and from bichir two members of this novel keratin group. By complementary keratin blot-binding assays and peptide mass fingerprinting using MALDI-TOF mass spectrometry, in sturgeon we were able to assign the sequence to a prominent protein spot, present exclusively in a two-dimensionally separated cytoskeletal preparation of skin, thus identifying it as an epidermally expressed type I keratin. In contrast to the other keratins we have so far sequenced from bichir, sturgeon and gar, these new sequences occupy a rather basal position within the phylogenetic tree of type I keratins, in a close vicinity to the keratins we previously cloned from river lamprey. CONCLUSION Thus, this new K14 group seem to belong to a very ancient keratin branch, whose functional role has still to be further elucidated. Furthermore, the exclusive presence of this keratin group in bichir, sturgeon and gar points to the close phylogenetic relationship of these ray- finned fish, an issue still under debate among taxonomists.
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Krause G, Neumann S, Kleinau G, Moore S, Jäschke H, Paschke R, Thomas CJ, Gershengorn MC. Design of low molecular weight ligands for the TSH receptor utilizing its sequence homology to the LH receptor. Exp Clin Endocrinol Diabetes 2007. [DOI: 10.1055/s-2007-972225] [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: 10/21/2022]
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Müller S, Kleinau G, Jäschke H, Neumann S, Krause G, Paschke R. Significance of the hinge region of the TSHR for receptor activation and hormone binding. Exp Clin Endocrinol Diabetes 2007. [DOI: 10.1055/s-2007-972326] [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: 10/21/2022]
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Kleinau G, Claus M, Jäschke H, Müller S, Neumann S, Paschke R, Krause G. Molecular mechanism at the TSH receptor: Modulation of signalling activity via extracellular loop 2. Exp Clin Endocrinol Diabetes 2007. [DOI: 10.1055/s-2007-972485] [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: 10/21/2022]
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Neumann S, Jung W, Trümper L. [Diagnostics and staging of non-Hodgkin's lymphomas]. Internist (Berl) 2007; 48:362-71. [PMID: 17364169 DOI: 10.1007/s00108-007-1824-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Non-Hodgkin's lymphomas represent a clinically and biologically heterogeneous group of diseases. Over the last few years, new treatment approaches such as humoral immunotherapy and high dose therapy with stem cell rescue have improved the chances for a cure in most patients with malignant lymphoma. However, only with the correct diagnosis and staging, including the evaluation of novel prognostic factors, are treating physicians able to choose the optimal treatment for their patients. This review focuses on conventional staging procedures and their role in the management of lymphoma patients, as well as on some new aspects of the molecular classification of lymphomas.
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Jaeschke H, Neumann S, Kleinau G, Mueller S, Claus M, Krause G, Paschke R. An aromatic environment in the vicinity of serine 281 is a structural requirement for thyrotropin receptor function. Endocrinology 2006; 147:1753-60. [PMID: 16410307 DOI: 10.1210/en.2005-1138] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The majority of constitutively activating human TSH receptor (hTSHR) mutations are located in the transmembrane helices as well as in the extracellular (ECLs) and intracellular loops. S(281) is one of two positions in the ectodomain in which activating hTSHR mutations have been identified in vivo (S(281)T, I, and N). To investigate the functional properties of this key residue in more detail, S(281) was replaced by each of the other 19 amino acids. Many substitutions led to constitutive receptor activation, suggesting that S(281) plays a pivotal role in maintaining the receptor in its inactive state. Strikingly, all substitutions with aromatic residues (S(281)W, F, Y, and H) show expression similar to that of wild-type hTSHR and are tolerated at this position because they maintain basal activity or express only slight constitutive activity. Three-dimensional modeling of the hTSHR suggested that S(281) and surrounding residues are in close proximity to ECL1. To investigate the possible importance of an aromatic environment between the ectodomain in the vicinity of S(281) and ECL1, aromatic residues Y(279), Y(476), H(478), Y(481), Y(482), and H(484) were replaced by alanine. Functional characterization showed impaired cell surface expression and signaling for Y(279)A and Y(481)A, in contrast to the other alanine mutants. However, substitutions of Y(279) and Y(481) with other aromatic residues exhibited surface expression and signaling comparable to wild-type hTSHR. Our results suggest that Y(279) in the extracellular domain and probably Y(481) in the ECL1 also are involved in an aromatic environment around S(281) in the hTSHR, which is important for functional receptor conformation and intramolecular receptor signaling.
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Claus M, Jäschke H, Kleinau G, Neumann S, Krause G, Paschke R. A hydrophobic cluster in the center of the third extracellular loop is important for TSH receptor signaling. Exp Clin Endocrinol Diabetes 2006. [DOI: 10.1055/s-2006-933012] [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: 10/19/2022]
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Stridde E, Jackel-Büsching S, Pfützner A, Neumann S, von Walter P. Das Entstehen des Insulinaerosols beim Gebrauch des Exubera® Inhalationssystems wird durch die meisten Handhabungsfehler nicht beeinflusst. DIABETOL STOFFWECHS 2006. [DOI: 10.1055/s-2006-943913] [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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Neumann S. [Serum creatine kinase activity in dogs and cats with metabolic diseases]. DTW. DEUTSCHE TIERARZTLICHE WOCHENSCHRIFT 2005; 112:343-7. [PMID: 16240913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Elevated Creatine kinase-activitiy (CK) indicates disturbances of the muscle cell integrity. In addition to primary muscle disease, like trauma, inflammation or dystrophy, diseases of other organs can lead to secondary muscle involvement, which will be indicated by increased serum activities of the CK. The mechanisms of muscle cell disturbance are still unknown. An elevated protein catabolism in the muscle cell is suspected. In the present study we investigated, if dogs and cats with metabolic diseases have increased CK-activity in the serum. From 34 dogs and cats in a group with different metabolic diseases without metabolic acidosis 19% of the dogs and 50% of the cats had increased CK-activity in the serum. From 33 dogs and cats with different metabolic diseases connected with metabolic acidosis 86% of the dogs and 95% of the cats had simultaneously increased CK-activity in the serum. In comparison to healthy dogs and cats animals with metabolic diseases have significant and in cases of metabolic di-seases with metabolic acidosis cats have high significant elevation (dogs significant) of CK-activity in the serum. There was no significant correlation between the groups of patients. In conclusion we think that our results show that metabolic diseases often induce secondary myopathy, measured by CK-activity in the serum, but metabolic acidosis has no direct influence on elevated CK activity in dogs and cats.
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Schiefke I, Neumann S, Zabel-Langhennig A, Moessner J, Caca K. Use of an endoscopic suturing device (the "ESD") to treat patients with gastroesophageal reflux disease, after unsuccessful EndoCinch endoluminal gastroplication: another failure. Endoscopy 2005; 37:700-5. [PMID: 16032486 DOI: 10.1055/s-2005-870128] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND Endoluminal gastroplication, using the EndoCinch procedure, has emerged as a potential endoscopic antireflux therapy. Although initial results have been promising, the long-term durability of the treatment is uncertain due to suture loss. A new endoscopic suturing device, the "ESD," has been developed that promises excellent visibility and endoscopic control. The aim of this study was to evaluate prospectively the feasibility and efficacy of the ESD method after EndoCinch failure. METHODS The study involved 20 patients with gastroesophageal reflux disease (GERD), who had been initially treated with an EndoCinch procedure, but had relapsed after a median of 7.5 months, with lost or dysfunctional sutures and with reflux symptoms that required proton pump inhibitor (PPI) treatment. Using the ESD, at least three plications were created at the gastroesophageal junction. Patients underwent endoscopy, 24-hour pH monitoring and esophageal manometry before treatment and 6 months afterwards. In addition, reflux symptoms as well as quality-of-life scores were assessed (using the SF-6 and GERD-HRQL scales). RESULTS The ESD procedure (median procedure time 45 min) was performed successfully in all patients without major complications. After 6 months only one patient (5 %) still had all sutures in situ, while no remaining sutures could be detected in 3/20 (15 %). No significant changes in reflux esophagitis; 24-hour pH monitoring results (median pH < 4/24 h9.9 % vs. 12.3 %; P = 0.60); manometry findings (median lower esophageal sphincter pressure 7.2 mm Hg vs. 9.9 mm Hg; P = 0.22); PPI use; or reflux esophagitis could be detected after 6 months. While reflux symptoms improved (heartburn severity score 30 vs. 48, P < 0,05), no changes in quality-of-life scores were detected. CONCLUSIONS Endoluminal gastroplication using the ESD is an easy and safe, but unfortunately ineffective procedure for endoscopic GERD treatment. Endoluminal gastroplication techniques clearly need refinements before these therapies can evolve as a treatment option for GERD patients.
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Schiefke I, Zabel-Langhennig A, Neumann S, Feisthammel J, Moessner J, Caca K. Long term failure of endoscopic gastroplication (EndoCinch). Gut 2005; 54:752-8. [PMID: 15888777 PMCID: PMC1774515 DOI: 10.1136/gut.2004.058354] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Endoluminal gastroplication (EndoCinch; Bard) has been introduced as an endoscopic treatment option in gastro-oesophageal reflux disease (GORD) patients with promising short term results. However, little is known about the long term efficacy of endoscopic suturing. The aim of this study was to evaluate prospectively the long term outcome after EndoCinch. PATIENTS AND METHODS A total of 70 patients treated with EndoCinch at a single referral centre were studied prospectively. All patients were interviewed using a standardised questionnaire regarding their symptoms and medication prior to and 18 months after EndoCinch. In addition, follow up included endoscopy, 24 hour pH monitoring, and oesophageal manometry. RESULTS The procedure was well tolerated without major short or long term complications. Eighteen months after EndoCinch, 56/70 patients (80%) were considered treatment failures as their heartburn symptoms did not improve or proton pump inhibitor medication exceeded 50% of the initial dose. Endoscopy showed all sutures in situ in 12/70 (17%) patients while no remaining sutures could be detected in 18/70 (26%). In 54 and 50 patients examined, respectively, no significant changes in 24 hour pH monitoring (median pH <4/24 hours, 9.1% v 8.5%; p = 0.82) or lower oesophageal sphincter (LOS) pressure (7.7 v 10.3 mm Hg; p = 0.051) were observed while median LOS length slightly increased (3.0 to 3.2 cm; p<0.05). CONCLUSION Endoscopic gastroplication (EndoCinch) is a safe and minimally invasive endoscopic treatment for GORD with reasonable short term results. In contrast, long term outcome is disappointing, probably due to suture loss in the majority of patients. Therefore, technical improvements to ensure suture durability are mandatory before endoscopic suturing can evolve as a therapeutic option for GORD treatment.
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Jäschke H, Neumann S, Kleinau G, Krause G, Paschke R. Intramolecular TSHR signaling requires an aromatic environment around S281 in the ectodomain. Exp Clin Endocrinol Diabetes 2005. [DOI: 10.1055/s-2005-862803] [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: 10/19/2022]
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Tönjes A, Böttcher Y, Neumann S, Miehle K, Brauer V, Paschke R. Elucidation of genetic predisposition of euthyroid goiter using linkage- and association analyses. Dtsch Med Wochenschr 2005; 130:340-3. [PMID: 15712022 DOI: 10.1055/s-2005-863053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Schiefke I, Soeder H, Zabel-Langhennig A, Teich N, Neumann S, Borte G, Mössner J, Caca K. Endoluminal gastroplication: what are the predictors of outcome? Scand J Gastroenterol 2004; 39:1296-303. [PMID: 15743010 DOI: 10.1080/00365520410003579] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Endoluminal gastroplication (EndoCinch) has emerged as an endoscopic anti-reflux therapy, but predictive factors for symptom relief have not been established. The aim of this study was to evaluate the major determinants to predict outcome in patients treated with EndoCinch. METHODS A total of 53 consecutive patients, treated with EndoCinch at a single center were included in this prospective study. Inclusion criteria were symptoms of chronic heartburn, dependency on proton-pump inhibitors, documented pathological esophageal acid exposure, and a hiatal hernia smaller than 3 cm in length. All patients underwent endoscopy, 24-h pH monitoring, esophageal manometry, barium esophagram, and a detailed questionnaire regarding their symptoms before treatment. Patients were stratified into a responder and a non-responder group using a questionnaire at 3-month follow-up. A multivariate analysis was performed. RESULTS The success rate was 64% (34/53 patients). Three variables weresignificantly predictive for successful endoscopic anti-reflux treatment at the multivariate level: presence of typical symptoms (P=0.01), complete symptom relief with acid suppressive therapy (P=0.01), and normal lower esophageal sphincter pressure (P = 0.04). Not predictive of outcome were age, body mass index, esophagitis, other manometric findings, hiatal hernia size, or pathological level of pH <4/24 h. Barium esophagram did not add any additional predictive information. CONCLUSIONS Since no single factor can predict outcome after EndoCinch, a careful patient selection is mandatory to maximize the success rate. The ideal candidate for EndoCinch is a gastroesophageal (GERD) patient with a normal lower esophageal sphincter pressure, whose typical symptoms completely resolved with acid suppressive therapy.
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Kuhlbusch TAJ, Neumann S, Fissan H. Number size distribution, mass concentration, and particle composition of PM1, PM2.5, and PM10 in bag filling areas of carbon black production. JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE 2004; 1:660-671. [PMID: 15631057 DOI: 10.1080/15459620490502242] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Number size characteristics and PM10 mass concentrations of particles emitted during the packaging of various kinds of carbon blacks were measured continuously in the bag filling areas of three carbon black plants and concurrently at ambient comparison sites. PM10, PM2.5, and PM1 dust fractions were also determined in the bag filling areas. The filter samples were then analyzed for elemental and organic carbon. Comparisons of the measured number size distributions and mass concentrations during bag filling activities with those measured parallel at the ambient site and with those determined during nonworking periods in the work area enabled the characterization of emitted particles. PM10 mass concentrations were consistently elevated (up to a factor of 20 compared to ambient concentrations) during working periods in the bag filling area. Detailed analysis revealed that the carbon black particles released by bag filling activities had a size distribution starting at approximately 400 nm aerodynamic diameter (dae) with modes around 1 microm dae and > 8 microm dae. Ultrafine particles (< 100 nm dae), detected in the bag filling areas, were most likely attributed to noncarbon black sources such as forklift and gas heater emissions.
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Neumann S, Caca K, Mössner J. [Pancreatico-pleural fistula in chronic pancreatitis with necrosis of the pancreatic tail]. Dtsch Med Wochenschr 2004; 129:1802-5. [PMID: 15314743 DOI: 10.1055/s-2004-829032] [Citation(s) in RCA: 1] [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
HISTORY AND CLINICAL FINDINGS A 68-year-old male was admitted to the hospital with progressive dyspnea and thoracic pain radiating to the shoulder, back and upper abdomen. The patients medical history included hypertension, diabetes and chronic pancreatitis with splenic vein thrombosis. INVESTIGATIONS Laboratory findings showed no signs of myocardial infarction, but pronounced inflammation. The ECG was normal. Chest X-ray revealed a massive left-side pleural effusion with partial lung atelectasis. An abdominal CT-scan showed no signs of acute pancreatitis. Puncture of the pleural effusion revealed elevated amylase and lipase. ERCP showed pancreatic duct stenosis, partial necrosis of the pancreatic body and peripancreatic necrosis with a pancreatico-pleural fistula. TREATMENT AND CLINICAL COURSE After ballon-dilatation of the constricted pancreatic duct, a plastic stent and a nasopancreatic drain were inserted into the necrosis and into the fistula. Drainage and antibiotic therapy led to regression of the necrosis within 3 weeks. With external pleural drainage and octreotide therapy almost complete regression of the pleural effusion and closure of the pancreatico-pleural fistula could be achieved within 3 weeks. CONCLUSION Complications of chronic pancreatitis such as necrosis and fistulas are rare, but important differential diagnoses in patients with chronic pancreatitis and chest pain. A combination of transpapillary or transgastral endoscopic drainage procedures and pleural drainage, sometimes with additional octreotide therapy is the treatment of choice.
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