15 results on '"Zelldifferenzierung"'
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2. Neuroendokrine Neoplasien: Zwei Familien mit sehr unterschiedlichen Charakteristika vereint in einer Klassifikation.
- Author
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Klöppel, Günter
- Abstract
Copyright of Wiener Klinisches Magazin is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
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3. Neuroendokrine Neoplasien: Zwei Familien mit sehr unterschiedlichen Charakteristika vereint in einer Klassifikation.
- Author
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Klöppel, G.
- Abstract
Copyright of Der Pathologe is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
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4. Der verlängerte Arm der Blutplättchen.
- Author
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Koenen, Rory
- Abstract
Alle Zellen unseres Körpers, insbesondere aber die Thrombozyten, geben extrazelluläre Vesikel (EV) ins Blut ab. Diese enthalten RNA, Proteine und Lipide und spielen eine bedeutsame Rolle bei vielen physiologischen und pathologischen Vorgängen. Aus der Flut einschlägiger Publikationen werden einige besonders attraktive Anwendungsmöglichkeiten für Blutplättchen-EV vorgestellt – von der Krebsdiagnostik bis zur Qualitätskontrolle von Blutprodukten. [ABSTRACT FROM AUTHOR]
- Published
- 2017
5. Organozinn(IV)-beladenes mesoporöses SiO2 als biokompatible Strategie bei der Krebstherapie.
- Author
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Bulatović, Mirna Z., Maksimović ‐ Ivanić, Danijela, Bensing, Christian, Gómez ‐ Ruiz, Santiago, Steinborn, Dirk, Schmidt, Harry, Mojić, Marija, Korać, Aleksandra, Golić, Igor, Pérez ‐ Quintanilla, Damian, Momčilović, Miljana, Mijatović, Sanja, and Kaluđerović, Goran N.
- Subjects
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ORGANOTIN compounds , *SILICA , *NANOSTRUCTURED materials , *APOPTOSIS , *CANCER cell differentiation , *ANTINEOPLASTIC agents - Abstract
Das große therapeutische Potenzial eines Organozinn(IV) ‐ beladenen nanostrukturierten SiO2 (SBA ‐ 15pSn) wird am Beispiel der Rückbildung eines durch B16 ‐ Zellen induzierten Melanoms bei syngenen C57BL/6 ‐ Mäusen demonstriert. Neben Apoptose als grundlegendem Mechanismus der Antitumorwirkung einer Vielzahl von Chemotherapeutika ist der entscheidende Vorteil dieses mesoporösen zinnhaltigen Materials das Auslösen der Zelldifferenzierung – ein Effekt, der weder für metallbasierte Zytostatika noch für mesoporöse Materialien alleine bisher beobachtet wurde. Dieser nichtaggressive Wirkungsmechanismus ist hochwirksam gegen Tumorzellen aber im gewählten Konzentrationsbereich nichttoxisch für normales Gewebe. JNK ‐ unabhängige Apoptose (JNK: Jun amino ‐ terminal kinase), begleitet von der Bildung des melanozytenartigen nichtproliferativen Phänotyps der überlebenden Zellen demonstriert das außergewöhnliche Potenzial von SBA ‐ 15pSn zur Unterdrückung von Tumorwachstum ohne eine unerwünschte kompensatorische Proliferation der erkrankten Zellen als Antwort auf den Zelltod in ihrer Nachbarschaft. Vielversprechendes Konzept: Die Beladung eines nanostrukturierten Materials mit einer Organozinn(IV) ‐ Verbindung führte zu einer beachtlichen Verstärkung der Wirksamkeit gegen Krebszellen. Das neuartige Nanomaterial brachte B12 ‐ Melanome bei syngenen C57BL/6 ‐ Mäusen fast vollständig zum Verschwinden. Die dabei erfolgte Rückverwandlung der Krebszellen zum normalen Phänotyp ist hochverträglich mit dem umgebenden Gewebe und stellt damit einen sehr sicheren Mechanismus der Krebsbekämpfung dar. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
6. Neue Perspektiven des Skelettmuskel-Tissue-Engineerings.
- Author
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Stern-Straeter, J. and Hörmann, K.
- Abstract
Copyright of HNO is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2014
- Full Text
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7. Induzierte pluripotente Stammzellen.
- Author
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Liebau, S., Stockmann, M., Illing, A., Seufferlein, T., and Kleger, A.
- Abstract
Copyright of Der Internist is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2014
- Full Text
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8. Cell Differentiation of Bovine Milk Control Samples to Improve Prognosis of Mastitis Cure
- Author
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Bunge, Anne, Dreyer, Sonja, Paduch, Jan-Hendrik, Klocke, Doris, Leimbach, Stefanie, Wente, Nicole, Nitz, Julia, and Kr��mker, Volker
- Subjects
Somatic cell count ,Microbiology (medical) ,Cell viability ,Bovine mastitis ,Zelldifferenzierung ,food and beverages ,Biochemistry ,Microbiology ,Mammary cure ,Euterentzündung ,Infectious Diseases ,630 Landwirtschaft, Veterin��rmedizin ,ddc:630 ,Differential cell count ,Pharmacology (medical) ,Milchkuh ,General Pharmacology, Toxicology and Pharmaceutics ,Therapie ,differential cell count ,mammary cure ,somatic cell count ,cell viability ,bovine mastitis - Abstract
To optimise udder health at the herd level, identifying incurable mastitis cases as well as providing an adequate therapy and culling strategy are necessary. Cows with clinical mastitis should be administered antibiotic medication if it is most likely to improve mammary cure. The somatic cell count (SCC) in milk of the monthly implemented Dairy Herd Improvement (DHI) test represents the most important tool to decide whether a cow has a promising mammary cure rate. Differential cell count (DCC) facilitates the specification of the immunological ability of defence, for example by characterising leukocyte subpopulations or cell viability. The aim of this study was to assess the DCC and cell viability in DHI milk samples regarding the cytological (CC) and bacteriological cure (BC) of the udder within a longitudinal study, thereby gaining a predictive evaluation of whether a clinical mastitis benefits from an antibiotic treatment or not. The cows enrolled in this study had an SCC above 200,000 cells/mL in the previous DHI test. Study 1 assessed the CC by reference to the SCC of two consecutive DHI tests and included 1010 milk samples: 28.4% of the mammary glands were classified as cytologically cured and 71.6% as uncured. The final mixed logistic regression model identified the total number of non-vital cells as a significant factor associated with CC. An increasing amount of non-vital cells was related to a lower individual ability for CC. Cows which were in the first or second lactation possessed a higher probability of CC than cows having a lactation number above two. If animals developed a clinical mastitis after flow cytometric investigation, the BC was examined in study 2 by analysing quarter foremilk samples microbiologically. Taking 48 milk samples, 81.3% of the mammary glands were classified as bacteriologically cured and 18.7% as uncured. The percentage of total non-vital cells tended to be lower for cows which were cured, but no significance could be observed. This study revealed that the investigation of the proportion of non-vital cells in DHI milk samples can enhance the prognosis of whether an antibiotic treatment of clinical mastitis might be promising or not. Prospectively, this tool may be integrated in the DHI tests to facilitate the decision between therapy or culling.
- Published
- 2022
- Full Text
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9. Loss of menin in osteoblast lineage affects osteocyte–osteoclast crosstalk causing osteoporosis
- Author
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Nicole Malkusch, Jeanette Knoll, Sooyeon Lee, Ulf H. Lerner, Jan Tuckermann, Mario M. Zaiss, Mona Neven, Susanne Ostermay, Alexander Rauch, Julia Luther, Philippe Bertolino, Martina Rauner, Chang X. Zhang, Peng Liu, Jean-Pierre David, and Rainer Wittig
- Subjects
0301 basic medicine ,Zelle ,endocrine system diseases ,receptor ,Osteoporosis ,Osteoclasts ,Bone resorption ,Expression ,Cell Communication ,Mice ,DDC 570 / Life sciences ,Osteogenesis ,Cell differentiation ,Femur ,Cells, Cultured ,Gen ,Chemistry ,Osteoblast ,Cell Differentiation ,differentiation ,Maus ,endocrine neoplasia type-1 ,Cell biology ,Crosstalk (biology) ,medicine.anatomical_structure ,Sp7 Transcription Factor ,Osteocyte ,Female ,Chemokines ,musculoskeletal diseases ,medicine.medical_specialty ,congenital, hereditary, and neonatal diseases and abnormalities ,endocrine system ,Cells ,Zelldifferenzierung ,Bone Marrow Cells ,Mice, Transgenic ,Osteocytes ,03 medical and health sciences ,Ausdruck ,Osteoclast ,Internal medicine ,ddc:570 ,Proto-Oncogene Proteins ,medicine ,CXCL10 ,Animals ,MEN1 ,Cell Lineage ,Glucocorticosteroide ,gene ,Molecular Biology ,Glucocorticoids ,mouse ,Original Paper ,Cell Biology ,cell ,medicine.disease ,Alkaline Phosphatase ,Antibodies, Neutralizing ,Chemokine CXCL10 ,Mice, Inbred C57BL ,030104 developmental biology ,Endocrinology ,Genes - Abstract
During osteoporosis bone formation by osteoblasts is reduced and/or bone resorption by osteoclasts is enhanced. Currently, only a few factors have been identified in the regulation of bone integrity by osteoblast-derived osteocytes. In this study, we show that specific disruption of menin, encoded by multiple endocrine neoplasia type 1 (Men1), in osteoblasts and osteocytes caused osteoporosis despite the preservation of osteoblast differentiation and the bone formation rate. Instead, an increase in osteoclast numbers and bone resorption was detected that persisted even when the deletion of Men1 was restricted to osteocytes. We demonstrate that isolated Men1-deficient osteocytes expressed numerous soluble mediators, such as C-X-C motif chemokine 10 (CXCL10), and that CXCL10-mediated osteoclastogenesis was reduced by CXCL10-neutralizing antibodies. Collectively, our data reveal a novel role for Men1 in osteocyte–osteoclast crosstalk by controlling osteoclastogenesis through the action of soluble factors. A role for Men1 in maintaining bone integrity and thereby preventing osteoporosis is proposed., publishedVersion
- Published
- 2017
10. Modifikationen in der Kultivierung von Gingivakeratinozyten.
- Author
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Lauer, G., Otten, J., and Schilli, W.
- Abstract
Copyright of Oral & Maxillofacial Surgery is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 1997
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11. Tissue culture in nephrology: Potential and limits for the study of renal disease.
- Author
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Horster, M.
- Abstract
Copyright of Klinische Wochenschrift is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 1980
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12. Immunhistochemische Untersuchungen und klinische Ergebnisse bei operativer Entfernung eines macular pucker.
- Author
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Heidenkummer, H. and Kampik, A.
- Abstract
17 chirurgisch entfernte epimakuläre Membranen wurden mit Hilfe der indirekten Immunperoxidasereaktion untersucht. Bei 3 Patienten lag eine idiopathische Form eines macular puckers vor, bei 5 Patienten war eine eindellende Netzhautoperation vorausgegangen, bei 4 Patienten eine Kryo- oder Photokoagulation eines peripheren Netzhautforamens, bei einem Patienten eine Uveitis und bei 4 Patienten eine intraokulare Silikonöltamponade. Postoperativ wurde bei 13 Patienten eine Visusverbesserung erzielt, bei 4 Patienten blieb der Visus gleich. Limitierend für das funktioneile Ergebnis sind in erster Linie intraretinale strukturelle Veränderungen der Makula, vor allem im Sinne eines zystoiden Makulaödems. Morphologisch zeigten fast alle Membranen Anteile der Lamina limitans interna. Die Zellpopulation wurde dominiert von mesenchymalen, vimentinpositiven und von keratinpositiven Zellen. Beide Zellsysteme konnten eine Koexpression für beide Zellmarker zeigen. Weitere positive Reaktionen fanden sich für saures Gliafaserprotein, Desmin und Makrophagenmarker. Nur in 1 Membran stellten sich endotheliale Zellen dar. Pigmenthaltige Zellen spielten eine nur untergeordnete Rolle. In 4 von 7 untersuchten Membranen fand sich eine positive Anfärbung für den nukleären Proliferationsmarker Ki-67 als Hinweis für aktiv proliferierende Zellen. Die Interzellularmatrix zeigte in allen Membranen eine stark positive Reaktion für Fibronektin mit auffällig dichterer Zellpopulation in Zonen stärkerer Fibronektinanfärbung. Besonders auffällig war eine teilweise äußerst starke Makrophagenreaktion in den Membranen nach intraokularer Silikonöltamponade mit multiplen phagozytierten intrazytoplasmatischen Silikonöleinlagerungen. 17 epiretinal membranes causing macular pucker were investigated immunohistochemically (indirect immunoperoxidase method) after membrane peeling via pars plana vitrectomy. The macular pucker had occurred in three cases spontaneously, in 5 cases after scierai buckling for rhegmatogenous retinal detachment, in 4 cases after photo- or cryocoagulation of a peripheral retinal tear, in 1 case in conjunction with uveitis and in 4 cases after intraocular silicone oil application. The clinical results postoperatively showed improvement of visual acuity and/or loss of metamorphopsia in 13 cases and no change of the visual acuity in 4 cases. The postoperative course might be limited by intraretinal structural changes of the macula like an atrophy of the photoreceptors or a cystoid macular oedema. Almost all membranes carried parts of the internal limiting membrane. Pigmented cells played a minor role in all membranes. The cell population of the membranes was dominated by vimentin positive mesenchymal cells and cytokeratin positive cells. These two main cell groups often showed coexpression for vimentin and keratin. Further positive staining was found for glial fibrillary acidic protein, desmin, and macrophage marker. Only in 1 membrane endothelial cells could be found. An actively proliferating process could be demonstrated in 4 out of 7 membranes by a positive reaction for the proliferation marker Ki-67. The intercellular matrix stained positive for fibronectin showing a denser cell population in areas with strong fibronectin staining. The membranes after intraocular silicone oil tamponade differed markedly as they showed a strong positive macrophage reaction with phagocytosed intracytoplasmic silicone oil droplets. [ABSTRACT FROM AUTHOR]
- Published
- 1991
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13. The influence of non-cytotoxic concentrations of the herbicide 2,4-dichlorophenoxyacetic acid on the DNA synthesis in cultured vertebrate cells.
- Author
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Haag, Dieter, Goerttler, Klaus, and Preiss, Dieter
- Abstract
Copyright of Archives of Toxicology is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 1975
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14. Induzierte pluripotente Stammzellen: Eine neue Ressource in der modernen Medizin
- Author
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Liebau, S., Stockmann, M., Illing, A., Seufferlein, T., and Kleger, A.
- Published
- 2014
- Full Text
- View/download PDF
15. HPV-assoziiertes Karzinom des weiblichen Genitaltrakts: Molekulare Mechanismen der Entstehung
- Author
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Reuschenbach, M., Vinokurova, S., and von Knebel Doeberitz, M.
- Published
- 2011
- Full Text
- View/download PDF
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