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Otteny M, Köhler K, Wendorff M, Röhr C. From AM
5 to A
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17: new crystallographically related intermetallics. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322092075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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Häußler TC, Thom N, Prenger-Berninghoff E, Köhler K, Barth SA. Challenging diagnosis and successful treatment of localised Mycobacterium avium subsp. hominissuis glossitis in a dog on long-term immunomodulatory therapy. N Z Vet J 2022; 70:340-348. [PMID: 35968551 DOI: 10.1080/00480169.2022.2113166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
CASE HISTORY A 3-year-old, intact female mixed-breed dog, weighing 7 kg, was presented with generalised swelling of the tongue, leading to impaired deglutition and episodes of dyspnoea. From the age of 2 years the dog had been under immunosuppressive therapy due to atopic dermatitis. CLINICAL FINDINGS AND TREATMENT Multiple nodular lesions at the apex of the tongue were noted as well as mandibular and retropharyngeal lymph node enlargement. Serum biochemistry results showed inflammatory changes. The results of several biopsies taken over 7 months indicated persistent pyogranulomatous and necrotising glossitis despite ongoing antimicrobial treatment with first amoxicillin/clavulanic acid and then pradofloxacin. No foreign material, acid-fast bacteria or fungal hyphae were detected throughout. The final diagnosis of Mycobacterium avium subsp. hominissuis (Mah) was reached after PCR and bacterial culture were carried out on the third biopsy sample. Therapy was initiated with rifampicin, clarithromycin and doxycycline, leading to complete remission of the lesions. DIAGNOSIS Severe chronic pyogranulomatous and necrotising glossitis associated with infection by Mah. CLINICAL RELEVANCE This report describes challenges in the diagnosis and therapy of a localised Mah infection in an iatrogenically immunocompromised dog. Successful treatment was only achieved with a specific combination of antibiotics administered long-term.
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Affiliation(s)
- T C Häußler
- Clinic for Small Animals, Surgical Department, Justus Liebig University, Giessen, Germany
| | - N Thom
- Clinic for Small Animals, Department of Dermatology, Justus Liebig University, Giessen, Germany
| | - E Prenger-Berninghoff
- Institute of Hygiene and Infectious Diseases of Animals, Justus Liebig University, Giessen, Germany
| | - K Köhler
- Institute of Veterinary Pathology, Justus Liebig University, Giessen, Germany
| | - S A Barth
- Friedrich-Loeffler-Institute/Federal Research Institute for Animal Health, Institute of Molecular Pathogenesis, Jena, Germany
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Rosato G, Michalopoulou E, Al-Saadi M, Verin R, Dettwiler M, Nordgren H, Chiers K, Grossmann E, Köhler K, Suntz M, Ruiz Subira A, Stewart J, Kipar A. Gammaherpesvirus Infections in Cattle in Europe: Investigations on the Prevalence and Relevance of Bovine Herpesvirus-6. J Comp Pathol 2022. [DOI: 10.1016/j.jcpa.2021.11.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Müller AC, Onkels AK, Köhler K, Röcken M. Equine gastrointestinal stromal tumours (GISTs) of the small intestine as cause of acute colic. PFERDEHEILKUNDE 2021. [DOI: 10.21836/pem20210503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Onkels A, Marcordes S, Sliwa A, Schaub S, Hennrich M, Herden C, Köhler K. Cholesterol Granuloma and Periventricular Haemorrhagic Malacia in a Sun Bear (Helarctos malayanus malayanus). J Comp Pathol 2020. [DOI: 10.1016/j.jcpa.2019.10.135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Müller J, Zilli J, Dohmen H, Schänzer A, Schmidt M, Köhler K. Diagnostic Challenge – Poorly Differentiated, Malignant Intraventricular Neoplasia in A Yorkshire Terrier. J Comp Pathol 2020. [DOI: 10.1016/j.jcpa.2019.10.164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Hartung S, Köhler K, Schmidt M, Grewer A, Markowski S, Henrich M. A Severe Case of Rickets with Vertebral Deformation in a 3-Month-old Captive Meerkat (Suricata suricatta). J Comp Pathol 2020. [DOI: 10.1016/j.jcpa.2019.10.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hirz M, Gregersen H, Czerwonka N, Sander J, Votion D, Schänzer A, Köhler K, Herden C. Atypical myopathy in two-humped camels. J Comp Pathol 2019. [DOI: 10.1016/j.jcpa.2018.10.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Monne Rodriguez J, Köhler K, Kipar A. Calicivirus co-infections in herpesvirus pneumonia in kittens. Vet J 2018; 236:1-3. [PMID: 29871741 DOI: 10.1016/j.tvjl.2018.04.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 04/03/2018] [Accepted: 04/05/2018] [Indexed: 10/17/2022]
Abstract
Felid herpesvirus-1 (FeHV-1) and feline calicivirus (FCV) are the most important infectious causes of respiratory disease in cats. FeHV-1 and FCV co-infections are common in cats with upper respiratory tract disease, but it is unknown whether such co-infections also occur in cats with pneumonia. This study examined the lungs of naturally infected cats with FeHV-1 pneumonia for FCV co-infection by histopathology and immunohistochemistry. The frequency of FCV (13/21, 62%) in this group of cats suggests that co-infection is common in kittens with FeHV-1 pneumonia. FCV infected macrophages were often found in the lumen of FeHV-1 affected airways. In 8/13 (62%) cats, typical FCV lesions were distant from changes induced by FeHV-1. FCV infection of type II pneumocytes/alveolar macrophages was apparent in histologically unaltered areas. It is likely that damage to airways induced by FeHV-1 facilitates secondary infection with FCV due to reduced mucociliary clearance and impaired immune defences.
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Affiliation(s)
| | - K Köhler
- Institute of Veterinary Pathology, Faculty of Veterinary Medicine, University of Giessen, Germany
| | - A Kipar
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Switzerland; Institute of Global Health, Faculty of Health and Life Sciences, University of Liverpool, UK.
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Abstract
Zusammenfassung
Gegenstand und Ziel: Der Fallbericht geht auf die klinischen und pathologischen Befunde bei einem Pferd ein, das an einem Adenokarzinom des Pankreas erkrankt war. Material und Methoden: Ein 17 Jahre alter Warmblutwallach wies seit 2 Wochen Diarrhö, Gewichtsverlust und erhöhte Leberwerte im Serum auf. Er wurde in der Klinik vorgestellt, als zusätzlich Fieber auftrat. Nach klinischer, labordiagnostischer und sonographischer Untersuchung erfolgte eine symptomatische Behandlung. Ergebnisse: Das Pferd entwickelte neben der initialen Diarrhö ein zunehmendes Ödem im Unterbrust- und Bauchbereich, einen Aszites und steigende Leberenzymktivitäten. Aufgrund des progressiven Krankheitsverlaufs musste das Tier nach 3 Tagen euthanasiert werden. Die Sektion ergab ein metastasierendes Pankreaskarzinom. Schlussfolgerung: Pankreaskarzinome sind beim Pferd sehr selten und lassen sich intra vitam schwer diagnostizieren. Bei bisher beschriebenen Fällen wurde die Diagnose immer post mortem gestellt. Klinische Relevanz: Bei Lebererkrankungen mit Aszites sollte auch beim Pferd ein Pankreaskarzinom differenzialdiagnostisch in Betracht gezogen werden.
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Henrich M, Köhler K. Visualization and Quantification of Hepatocellular Necrosis Using Cresyl Violet Stain. J Comp Pathol 2018. [DOI: 10.1016/j.jcpa.2017.10.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Romero-Palomo F, Elbahi A, Köhler K, Ressel L, Kipar A. An In-situ Approach to Unravel the Pathogenesis of Cutaneous Mast Cell Tumour and Eosinophilic Granuloma in Horses. J Comp Pathol 2018. [DOI: 10.1016/j.jcpa.2017.10.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Köhler K. Serving as catalyst for national health policy-making: The success story of the Estonian evidence brief for policy (EBP). Eur J Public Health 2017. [DOI: 10.1093/eurpub/ckx187.647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K Köhler
- Ministry of Social Affairs, Tallinn, Estonia
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Köhler K, von Kutzleben M, Hochgraeber I, Dreyer J, Holle B. WHAT CONSTITUTES STABILITY OF HOME-BASED CARE ARRANGEMENTS FOR PEOPLE WITH DEMENTIA? A META-STUDY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K. Köhler
- German Center for Neurodegenerative Diseases (DZNE) Site Witten, Witten, Witten, Germany,
- University of Witten/Herdecke, School of Nursing Science, Witten, Germany
| | - M. von Kutzleben
- German Center for Neurodegenerative Diseases (DZNE) Site Witten, Witten, Witten, Germany,
| | - I. Hochgraeber
- German Center for Neurodegenerative Diseases (DZNE) Site Witten, Witten, Witten, Germany,
- University of Witten/Herdecke, School of Nursing Science, Witten, Germany
| | - J. Dreyer
- German Center for Neurodegenerative Diseases (DZNE) Site Witten, Witten, Witten, Germany,
- University of Witten/Herdecke, School of Nursing Science, Witten, Germany
| | - B. Holle
- German Center for Neurodegenerative Diseases (DZNE) Site Witten, Witten, Witten, Germany,
- University of Witten/Herdecke, School of Nursing Science, Witten, Germany
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Hirz M, Drögemüller M, Schänzer A, Jagannathan V, Dietschi E, Goebel HH, Hecht W, Laubner S, Schmidt MJ, Steffen F, Hilbe M, Köhler K, Drögemüller C, Herden C. Neuronal ceroid lipofuscinosis (NCL) is caused by the entire deletion of CLN8 in the Alpenländische Dachsbracke dog. Mol Genet Metab 2017; 120:269-277. [PMID: 28024876 DOI: 10.1016/j.ymgme.2016.12.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 12/14/2016] [Accepted: 12/15/2016] [Indexed: 11/20/2022]
Abstract
Neuronal ceroid lipofuscinoses (NCLs) are inherited lysosomal storage diseases that have been described in a variety of dog breeds, where they are caused by different mutations in different genes. However, the causative gene defect in the breed Alpenländische Dachsbracke remained unknown so far. Here we present two confirmed cases of NCL in Alpenländische Dachsbracke dogs from different litters of the same sire with a different dam harboring the same underlying novel mutation in the CLN8 gene. Case 1, a 2-year-old male Alpenländische Dachsbracke was presented with neurological signs including disorientation, character changes including anxiety states and aggressiveness, sudden blindness and reduction of food intake. Magnetic resonance imaging (MRI) scans showed cerebral atrophy with dilation of all cerebral ventricles, thinning of the intermediate mass of the thalamus and widening of the cerebral sulci. Postmortem examination of the central nervous system (CNS) showed neuronal loss in the cerebral cortex, cerebellum and spinal cord with massive intracellular deposits of ceroid pigment. Additional ceroid-lipofuscin deposits were observed in the enteric nervous system and in macrophages within spleen, lymph nodes and lung. Ultrastructural analyses confirmed NCL with the presence of osmiophilic membrane bounded lamellar-like structures. Case 2, a 1,5-year old female Alpenländische Dachsbracke was presented with progressive generalized forebrain disease including mental changes such as fearful reactions to various kinds of external stimuli and disorientation. The dog also displayed seizures, absence of menace reactions and negative cotton-ball test with normal pupillary light reactions. The clinical and post mortem examination yielded similar results in the brain as in Case 1. Whole genome sequencing of Case 1 and PCR results of both cases revealed a homozygous deletion encompassing the entire CLN8 gene as the most likely causative mutation for the NCL form observed in both cases. The deletion follows recessive inheritance since the dam and a healthy male littermate of Case 1 were tested as heterozygous carriers. This is the first detailed description of CLN8 gene associated NCL in Alpenländische Dachsbracke dogs and thus provides a novel canine CLN8 model for this lysosomal storage disease. The presence of ceroid lipofuscin in extracerebral tissues may help to confirm the diagnosis of NCL in vivo, especially in new dog breeds where the underlying mutation is not known.
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Affiliation(s)
- M Hirz
- Institute of Veterinary Pathology, Justus-Liebig-University Giessen, Germany.
| | - M Drögemüller
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Switzerland
| | - A Schänzer
- Institute of Neuropathology, Justus-Liebig-University Giessen, Germany
| | - V Jagannathan
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Switzerland
| | - E Dietschi
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Switzerland
| | - H H Goebel
- Institute of Neuropathology Charité, University Berlin, Germany
| | - W Hecht
- Institute of Veterinary Pathology, Justus-Liebig-University Giessen, Germany
| | - S Laubner
- Clinic for Small Animals - Surgery, Justus-Liebig-University Giessen, Germany
| | - M J Schmidt
- Clinic for Small Animals - Surgery, Justus-Liebig-University Giessen, Germany
| | - F Steffen
- Clinic for Small Animals - Neurology, Vetsuisse Faculty, University of Zurich, Switzerland
| | - M Hilbe
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Switzerland
| | - K Köhler
- Institute of Veterinary Pathology, Justus-Liebig-University Giessen, Germany
| | - C Drögemüller
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Switzerland
| | - C Herden
- Institute of Veterinary Pathology, Justus-Liebig-University Giessen, Germany
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Köhler K, Weitz J, Reißfelder C. Der seltene und besondere Notfall: Ösophagusperforation. Zentralbl Chir 2016. [DOI: 10.1055/s-0036-1586315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Becker S, Püllen C, Köhler K, Willems H, Reinhold P, Reiner G. Patho-histologische Ursachen für die Variabilität von IOS-Messungen am Schwein. Pneumologie 2016. [DOI: 10.1055/s-0036-1584386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Sommer D, Heffels-Redmann U, Köhler K, Lierz M, Kaleta EF. [Role of the poultry red mite (Dermanyssus gallinae) in the transmission of avian influenza A virus]. Tierarztl Prax Ausg G Grosstiere Nutztiere 2016; 44:26-33. [PMID: 26830386 DOI: 10.15653/tpg-150413] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 09/30/2015] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the role of the poultry red mite (Dermanyssus [D.] gallinae) in the horizontal transmission of avian influenza A virus (AIV) to chickens. This mite is the most common ectoparasite in poultry worldwide, and may play a role in the spread of infectious agents including AIV. Currently, the control of mites is difficult due to frequently developed resistance to many acaricides, their nocturnality and their ability to survive hidden without feeding for months. MATERIALS AND METHODS D. gallinae were collected in a commercial layer farm and housed in self-made fibreboard boxes. SPF chickens were intravenously infected with AIV strain A/turkey/Ontario/7732/1966 (H5N9). The viraemia in chickens was monitored and at an appropriate time point about 1000 mites were allowed to suck on the AIV infected chickens. Re-isolation of the virus from blood-filled mites was tried daily for 14 days using chicken embryo fibroblast cultures and embryonated chicken eggs. Subsequently, the virus containing mites were placed into boxes that contained naïve SPF chickens to enable virus transmission from mites to chickens. Possible transmission to the chickens was examined using clinical signs, serology, gross lesions, histopathology and immunohistochemistry. RESULTS Chickens developed a dose-dependent viraemia one day after infection, therefore this day was chosen for the bloodmeal of the mites. AIV was detected in mites after bloodsucking on AIV-infected chickens over a 10-day period. Naïve SPF chickens were infected during bloodsucking of AIV carrying mites. AIV isolates in mites and in chickens were undistinguishable from the original AIV inoculum by RT-PCR. CONCLUSIONS D. gallinae ingested AIV during bloodmeals on AIV infected chickens and are able to transmit AIV to SPF chickens. Therefore, mites serve as mechanical vector of AIV and may play a major role in the circulation of AIV within a facility or area although the life span of infectious virus in the mite is limited. CLINICAL RELEVANCE The proven transmission requires more than ever a systematic control of this ectoparasite in order to maintain poultry health and productivity. The demonstrated vector function of this mite is of great significance for poultry flocks all over the world.
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Affiliation(s)
| | | | | | | | - E F Kaleta
- Prof. Dr. Dr. h. c. Erhard F. Kaleta, Klinik für Vögel, Reptilien, Amphibien und Fische, Klinikum Veterinärmedizin, Justus-Liebig-Universität, Frankfurter Straße 91-93, 35392 Gießen, E-Mail:
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Monné Rodriguez J, Leeming G, Köhler K, Kipar A. Spread of Feline Herpesvirus Type-1 along the Respiratory Tract to the Lung: Assessment of Associated Changes in Natural Cases and an In-Vitro Model. J Comp Pathol 2016. [DOI: 10.1016/j.jcpa.2015.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ertelt A, Sulikowska A, Huisinga M, Köhler K, Fey K. Granular cell tumor as a cause of chronic cough. PFERDEHEILKUNDE 2016. [DOI: 10.21836/pem20160404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Monné Rodriguez J, Köhler K, Kipar A. Calicivirus Infection with Associated Lesions is Common in Feline Herpesvirus Pneumonia. J Comp Pathol 2016. [DOI: 10.1016/j.jcpa.2015.10.172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Becker S, Püllen C, Köhler K, Willems H, Reiner G. Auswirkungen pathologisch-anatomischer und histologischer Aberrationen auf die Ergebnisse der Impuls-Oszilloresistometrie beim Schwein: Erste histo-pathologische Charakterisierungen. Pneumologie 2015. [DOI: 10.1055/s-0035-1552910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Korn AK, Gross M, Usleber E, Thom N, Köhler K, Erhardt G. Dietary ergot alkaloids as a possible cause of tail necrosis in rabbits. Mycotoxin Res 2014; 30:241-50. [PMID: 25234267 PMCID: PMC4202174 DOI: 10.1007/s12550-014-0208-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 08/22/2014] [Accepted: 08/25/2014] [Indexed: 11/12/2022]
Abstract
This study describes the association between tail necrosis in rabbits and mycotoxins in rabbit feed. Clinical cases of tail necrosis were observed in 14 out of 103 rabbits kept in an outdoor group housing, fed with hay and a commercial pelleted feed. The observed clinical symptoms, alopecia, erosions, crusts and necrosis were restricted to the tail area and exclusively occurred in young rabbits aged 113 ± 20 days. Dermatological examination suggested that ischemia had caused necrosis. Analysis of blood samples showed an elevated level of creatine kinase. No weight loss occurred in affected rabbits. Trauma caused by injuries or technopathic lesions was also excluded. Histopathologically, the lesions were characterized by acute muscle fibre degeneration and chronic active dermatitis with granulation tissue formation. Necropsy of one rabbit revealed hepatocellular degeneration and necrosis as remarkable findings. Feed analysis for ergot alkaloids by enzyme immunoassays yielded a mean and maximum ergot alkaloid content of 410 ± 250 μg/kg and 1,700 μg/kg, respectively. Faeces of affected rabbits contained ergot alkaloids at levels up to 200 μg/kg. The mean and maximum dietary intake of total ergot alkaloids were 17 and 71 μg/kg bodyweight, respectively. Fusarium toxins (trichothecenes, zearalenone, fumonisins) were also found in the feed, but at levels which did not explain the observed effects. The results indicate that ergot alkaloids may have been the cause of tail necrosis, which is supported by literature data showing that rabbits are especially sensitive towards these toxins.
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Affiliation(s)
- A. K. Korn
- Department of Animal Breeding and Genetics, Justus-Liebig-University, Ludwigstrasse 21b, 35390 Giessen, Germany
| | - M. Gross
- Institute of Veterinary Food Science, Dairy Sciences, Justus-Liebig-University, Ludwigstrasse 21, 35390 Giessen, Germany
| | - E. Usleber
- Institute of Veterinary Food Science, Dairy Sciences, Justus-Liebig-University, Ludwigstrasse 21, 35390 Giessen, Germany
| | - N. Thom
- Clinic for Small Animals, Internal Medicine, Justus-Liebig-University, Frankfurter Strasse 126, 35392 Giessen, Germany
| | - K. Köhler
- Institute of Veterinary Pathology, Justus-Liebig-University, Frankfurter Strasse 96, 35392 Giessen, Germany
| | - G. Erhardt
- Department of Animal Breeding and Genetics, Justus-Liebig-University, Ludwigstrasse 21b, 35390 Giessen, Germany
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Monné Rodriguez J, Soare T, Malbon A, Blundell R, Papoula-Pereira R, Leeming G, Köhler K, Kipar A. Alveolar macrophages are the main target cells in feline calicivirus-associated pneumonia. Vet J 2014; 201:156-65. [DOI: 10.1016/j.tvjl.2014.04.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Revised: 02/01/2014] [Accepted: 04/27/2014] [Indexed: 11/16/2022]
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Abstract
Friend Leukemia Virus is taken up by mouse macrophages and propagated. During in vitro infection no cytopathic effect nor any visible transformation occurs. For three weeks the cells contain infectious virus; infectious units are also shed into the medium.
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Affiliation(s)
- T. Odaka
- Max-Planck-Institut für Virusforschung, Abteilung für physikalische Biologie, Tübingen
| | - K. Köhler
- Max-Planck-Institut für Virusforschung, Abteilung für physikalische Biologie, Tübingen
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Köhler K, Förster B, Kolbowski J. Potassium Channels inEremosphaera viridis: Modulation of Channel Opening, Conductance and Inhibition*. ACTA ACUST UNITED AC 2014. [DOI: 10.1111/j.1438-8677.1989.tb00107.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ullrich CI, Köhler K, Baier M, Förster B, Hartung W. Neutral Red as a Redox Dye Induces K+Efflux and Current-Voltage Changes inEremosphaera, Lemna, and Guard Cells*. ACTA ACUST UNITED AC 2014. [DOI: 10.1111/j.1438-8677.1990.tb00150.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
In the last years, mainly 2 high-intensity-training (HIT) protocols became common: first, a Wingate-based "all-out" protocol and second, a 4×4 min protocol. However, no direct comparison between these protocols exists, and also a comparison with high-volume-training (HVT) is missing. Therefore, the aim of the present study was to compare these 3 endurance training protocols on metabolic, hormonal, and psychological responses. Twelve subjects performed: 1) HVT [130 min at 55% peak power output (PPO)]; 2) 4×4 min at 95% PPO; 3) 4×30 s all-out. Human growth hormone (hGH), testosterone, and cortisol were determined before (pre) and 0', 30', 60', 180' after each intervention. Metabolic stimuli and perturbations were characterized by lactate, blood gas (pH, BE, HCO₃⁻, pO₂, PCO₂), and spirometric analysis. Furthermore, changes of the person's perceived physical state were determined. The 4×30 s training caused the highest increases in cortisol and hGH, followed by 4 × 4 min and HVT. Testosterone levels were significantly increased by all 3 exercise protocols. Metabolic stress was highest during and after 4×30 s, followed by 4×4 min and HVT. The 4×30 s training was also the most demanding intervention from an athlete's point of view. In conclusion, the results suggest that 4×30 s and 4×4 min promote anabolic processes more than HVT, due to higher increases of hGH, testosterone, and the T/C ratio. It can be speculated that the acute hormonal increase and the metabolic perturbations might play a positive role in optimizing training adaptation and in eliciting health benefits as it has been shown by previous long term training studies using similar exercise protocols.
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Affiliation(s)
- P Wahl
- Institute of Training Science and Sport Informatics, German Sport University, Cologne, Germany
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Bader R, Sarraf-Zadeh L, Peters M, Moderau N, Stocker H, Köhler K, Pankratz MJ, Hafen E. The IGFBP7 homolog Imp-L2 promotes insulin signaling in distinct neurons of the Drosophila brain. Development 2013. [DOI: 10.1242/dev.100065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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33
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Bader R, Sarraf-Zadeh L, Peters M, Moderau N, Stocker H, Köhler K, Pankratz MJ, Hafen E. The IGFBP7 homolog Imp-L2 promotes insulin signaling in distinct neurons of the Drosophila brain. J Cell Sci 2013; 126:2571-6. [PMID: 23591813 DOI: 10.1242/jcs.120261] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In Drosophila, Insulin-like peptide 2 (Dilp-2) is expressed by insulin-producing cells in the brain, and is secreted into the hemolymph to activate insulin signaling systemically. Within the brain, however, a more local activation of insulin signaling may be required to couple behavioral and physiological traits to nutritional inputs. We show that a small subset of neurons in the larval brain has high Dilp-2-mediated insulin signaling activity. This local insulin signaling activation is accompanied by selective Dilp-2 uptake and depends on the expression of the Imaginal morphogenesis protein-late 2 (Imp-L2) in the target neurons. We suggest that Imp-L2 acts as a licensing factor for neuronal IIS activation through Dilp-2 to further increase the precision of insulin activity in the brain.
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Affiliation(s)
- R Bader
- LIMES Life and Medical Sciences, Laboratory of Molecular Brain Physiology and Behavior, University of Bonn, Bonn 53115, Germany
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Krieger J, Köhler K, Gräser M, Lüdtke-Buzug K. Construction of a Spectrometer to Measure the Cotton-Mouton Effect of Superparamagnetic Iron Oxide Nanoparticles. BIOMED ENG-BIOMED TE 2013; 58 Suppl 1:/j/bmte.2013.58.issue-s1-C/bmt-2013-4102/bmt-2013-4102.xml. [DOI: 10.1515/bmt-2013-4102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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35
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Schröder S, Schmidt MJ, Preis S, Klumpp S, Köhler K, Kuchelmeister K, Herden C. Unilateral cerebellar hypoplasia and mesencephalic malformation in a Hanoverian foal. Tierarztl Prax Ausg G Grosstiere Nutztiere 2013; 41:106-112. [PMID: 23608891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2012] [Accepted: 01/16/2013] [Indexed: 06/02/2023]
Abstract
Neurological cases, especially in foals, are rare in the daily practical work. The most common causes are traumata and infectious diseases of the central nervous system (CNS). This case report provides further insights into the wide spectrum of possible neuropathological lesions by detailing a complex malformation with unilateral neurological signs that occurred later post natum. Thus, clinicians should also be aware of malformations in case of respective neurological patients. A Hanoverian foal was presented with progressive ataxia. General and blood examination revealed no further alterations. By neurologic examination, a unilateral hypermetria was diagnosed and a cysternography of the head was performed. A cerebellar malformation was assumed and the foal was euthanized due to poor prognosis. At necropsy, a unilateral absence of a cerebellar hemisphere and vermis accompanied by contralateral malformation of the mesencephalon was diagnosed. The missing areas of the right cerebellar hemisphere were replaced by a cystic formation. The left part of the mesencephalic lamina quadrigemina was reduced in size and the corpus callosum was hypoplastic. Additional microscopical findings were most obvious near the cyst formation and included angiofibrosis in remaining cerebellar and mesencephalic parenchyma and leptomeninges, heterotopia of cerebellar neurons, sclerosis in cerebellar cortex, focal proliferation of meningeal cells and mild mononuclear perivascular infiltrates. Occassional irregular neuronal arrangement in the mesencephalon was also present. Infectious agents such as Borna disease virus, rabies virus, and equine herpesvirus were not detected. Therefore, the complex malformation in this foal might have been caused by a destructive, possibly ischemic event, or could represent a sequel of a primary retrocerebellar cyst with accompanying compression of adjacent parenchyma.
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Affiliation(s)
- S Schröder
- Institute of Veterinary Pathology, Justus-Liebig-University Gießen, 35392 Gießen, Germany.
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36
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Schmidt MJ, Preis S, Klumpp S, Köhler K, Kuchelmeister K, Herden C, Schröder S. Unilateral cerebellar hypoplasia and mesencephalic malformation in a Hanoverian foal. Tierarztl Prax Ausg G Grosstiere Nutztiere 2013. [DOI: 10.1055/s-0038-1623158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryNeurological cases, especially in foals, are rare in the daily practical work. The most common causes are traumata and infectious diseases of the central nervous system (CNS). This case report provides further insights into the wide spectrum of possible neuropathological lesions by detailing a complex malformation with unilateral neurological signs that occurred later post natum. Thus, clinicians should also be aware of malformations in case of respective neurological patients. A Hanoverian foal was presented with progressive ataxia. General and blood examination revealed no further alterations. By neurologic examination, a unilateral hypermetria was diagnosed and a cysternography of the head was performed. A cerebellar malformation was assumed and the foal was euthanized due to poor prognosis. At necropsy, a unilateral absence of a cerebellar hemisphere and vermis accompanied by contralateral malformation of the mesencephalon was diagnosed. The missing areas of the right cerebellar hemisphere were replaced by a cystic formation. The left part of the mesencephalic lamina quadrigemina was reduced in size and the corpus callosum was hypoplastic. Additional microscopical findings were most obvious near the cyst formation and included angiofibrosis in remaining cerebellar and mesencephalic parenchyma and leptomeninges, heterotopia of cerebellar neurons, sclerosis in cerebellar cortex, focal proliferation of meningeal cells and mild mononuclear perivascular infiltrates. Occassional irregular neuronal arrangement in the mesencephalon was also present. Infectious agents such as Borna disease virus, rabies virus, and equine herpesvirus were not detected. Therefore, the complex malformation in this foal might have been caused by a destructive, possibly ischemic event, or could represent a sequel of a primary retrocerebellar cyst with accompanying compression of adjacent parenchyma.
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37
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Guthausen G, Bernewitz R, Köhler K, Schuchmann H. Bestimmung der inneren Struktur von Doppelemulsionen nach der Produktion. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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38
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Freudig B, Köhler K, Schuchmann H. Simultanes Emulgieren und Mischen: Vorteile für den Schmelzemulgierprozess. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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39
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Schmidt U, Köhler K, Kurz T, Endreß HU, Schuchmann H. Auswirkung der Struktur von Pektinen auf deren emulgierende oder emulsionsstabilisierende Eigenschaften. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Hecht L, Wagner C, Köhler K, Landfester K, Schuchmann H. Herstellung strukturierter Partikel mittels Hochdruckhomogenisierung und Miniemulsionspolymerisation. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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41
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Köster A, Köhler K, Mettenleiter E, Brachthäuser L, Loesenbeck G, Carstanjen B. Fibrosarcoma in the saddle area in a dressage horse. PFERDEHEILKUNDE 2012. [DOI: 10.21836/pem20120505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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42
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Frank K, Köhler K, Schuchmann HP. Formulation of Labile Hydrophilic Ingredients in Multiple Emulsions: Influence of the Formulation's Composition on the Emulsion's Stability and on the Stability of Entrapped Bioactives. J DISPER SCI TECHNOL 2011. [DOI: 10.1080/01932691.2011.616147] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Barth JMI, Szabad J, Hafen E, Köhler K. Autophagy in Drosophila ovaries is induced by starvation and is required for oogenesis. Cell Death Differ 2010; 18:915-24. [PMID: 21151027 DOI: 10.1038/cdd.2010.157] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Autophagy, an evolutionarily conserved lysosome-mediated degradation, promotes cell survival under starvation and is controlled by insulin/target of rapamycin (TOR) signaling. In Drosophila, nutrient depletion induces autophagy in the fat body. Interestingly, nutrient availability and insulin/TOR signaling also influence the size and structure of Drosophila ovaries, however, the role of nutrient signaling and autophagy during this process remains to be elucidated. Here, we show that starvation induces autophagy in germline cells (GCs) and in follicle cells (FCs) in Drosophila ovaries. This process is mediated by the ATG machinery and involves the upregulation of Atg genes. We further demonstrate that insulin/TOR signaling controls autophagy in FCs and GCs. The analysis of chimeric females reveals that autophagy in FCs, but not in GCs, is required for egg development. Strikingly, when animals lack Atg gene function in both cell types, ovaries develop normally, suggesting that the incompatibility between autophagy-competent GCs and autophagy-deficient FCs leads to defective egg development. As egg morphogenesis depends on a tightly linked signaling between FCs and GCs, we propose a model in which autophagy is required for the communication between these two cell types. Our data establish an important function for autophagy during oogenesis and contributes to the understanding of the role of autophagy in animal development.
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Affiliation(s)
- J M I Barth
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
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44
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Köhler K, Stelzner S, Haroske G, Witzigmann H. [Leiomyosarcoma of the oesophagus and gastric adenocarcinoma with family history of HNPCC syndrome]. Zentralbl Chir 2010; 136:284-8. [PMID: 21049402 DOI: 10.1055/s-0030-1262537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- K Köhler
- Krankenhaus Dresden-Friedrichstadt, Klinik für Allgemein- und Viszeralchirurgie, Dresden, Deutschland.
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45
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Weiss ATA, Bauer C, Köhler K. Canine Alveolar Echinococcosis: Morphology and Inflammatory Response. J Comp Pathol 2010; 143:233-8. [DOI: 10.1016/j.jcpa.2010.03.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2009] [Revised: 02/18/2010] [Accepted: 03/16/2010] [Indexed: 11/27/2022]
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46
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Yang J, Köhler K, Davis DM, Burroughs NJ. An improved strip FRAP method for estimating diffusion coefficients: correcting for the degree of photobleaching. J Microsc 2010; 238:240-53. [PMID: 20579262 DOI: 10.1111/j.1365-2818.2009.03347.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fluorescence recovery after photobleaching is a widely established method for the estimation of diffusion coefficients, strip bleaching with an associated recovery curve analysis being one of the simplest techniques. However, its implementation requires near 100% bleaching in the region of interest with negligible fluorescence loss outside, both constraints being hard to achieve concomitantly for fast diffusing molecules. We demonstrate that when these requirements are not met there is an error in the estimation of the diffusion coefficient D, either an under- or overestimation depending on which assumption is violated the most. We propose a simple modification to the recovery curve analysis incorporating the concept of the relative bleached mass m giving a revised recovery time parametrization tau=m(2)w(2)/4piD for a strip of width w. This modified model removes the requirement of 100% bleaching in the region of interest and allows for limited diffusion of the fluorophore during bleaching. We validate our method by estimating the (volume) diffusion coefficient of FITC-labelled IgG in 60% glycerol solution, D= 4.09 +/- 0.21 microm(2) s(-1), and the (surface) diffusion coefficient of a green-fluorescent protein-tagged class I MHC protein expressed at the surface of a human B cell line, D= 0.32 +/- 0.03 microm(2) s(-1) for a population of cells.
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Affiliation(s)
- J Yang
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
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47
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Köhler K, Schuchmann H. Produktentwicklung und Prozessintensivierung mit der simultanen Emulgier- und Misch-Technik (SEM). CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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48
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Schmiedeknecht G, Eickmann M, Köhler K, Herden CE, Kolesnikova L, Förster C, Burkhardt EH, König M, Thiel M, Reinacher M. Fatal Cowpox Virus Infection in Captive Banded Mongooses (Mungos mungo). Vet Pathol 2010; 47:547-52. [DOI: 10.1177/0300985810363703] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cowpox virus infections have been described in various domestic and exotic animal species. This report is the first on an outbreak of fatal generalized cowpox virus infection among captive banded mongooses ( Mungos mungo, suborder Feliformia). All animals of a colony of 8 mongooses showed a fulminant course of disease. The whole population died (n=7) or was euthanized (n=1) within 11 days. Postmortem examinations were performed on 4 animals. All animals showed extensive necrotizing inflammation of retropharyngeal lymph nodes, typical poxviral skin lesions, and multiple necrotic foci in liver and spleen. Three animals exhibited an ulcerating stomatitis. Pulmonary lesions, a common feature of fatal cowpox virus infections in other feliform species, were not obvious. Histopathologically, characteristic cytoplasmic inclusion bodies were detected in all affected organs but the spleen. Based on transmission electron microscopy and cell culture, Orthopoxvirus was identified as the etiology. The virus was further characterized by polymerase chain reaction and sequence analysis, identifying it as cowpox virus. A survey in the habitat suggests wild brown rats ( Rattus norvegicus) as the most likely source of infection.
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Affiliation(s)
- G. Schmiedeknecht
- Institut für Veterinaer-Pathologie, Justus-Liebig-Universitaet, Giessen, Germany
| | - M. Eickmann
- Institut für Virologie, Philipps-Universitaet, Marburg, Germany
| | - K. Köhler
- Institut für Veterinaer-Pathologie, Justus-Liebig-Universitaet, Giessen, Germany
| | - C. E. Herden
- Institut für Veterinaer-Pathologie, Justus-Liebig-Universitaet, Giessen, Germany
| | - L. Kolesnikova
- Institut für Virologie, Philipps-Universitaet, Marburg, Germany
| | - C. Förster
- Institut für Virologie, Justus-Liebig-Universitaet, Giessen, Germany
| | - E. H. Burkhardt
- Institut für Veterinaer-Pathologie, Justus-Liebig-Universitaet, Giessen, Germany
| | - M. König
- Institut für Virologie, Justus-Liebig-Universitaet, Giessen, Germany
| | | | - M. Reinacher
- Institut für Veterinaer-Pathologie, Justus-Liebig-Universitaet, Giessen, Germany
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50
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Brückner M, Klumpp S, Ondreka N, Huisinga M, Köhler K, Kramer M. [Atypical solitary osteochondroma in a Labrador Retriever]. Tierarztl Prax Ausg K Kleintiere Heimtiere 2010; 38:97-105. [PMID: 22331309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Received: 04/23/2009] [Accepted: 09/22/2009] [Indexed: 05/31/2023]
Affiliation(s)
- M Brückner
- Tierärztliche Fachklinik für Kleintiere in Augsburg, Augsburg.
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