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Mehl C, Adeyemi OA, Wylezich C, Höper D, Beer M, Triebenbacher C, Heckel G, Ulrich RG. Lymphocytic Choriomeningitis Virus Lineage V in Wood Mice, Germany. Emerg Infect Dis 2024; 30:399-401. [PMID: 38270110 PMCID: PMC10826776 DOI: 10.3201/eid3002.230868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024] Open
Abstract
We identified a novel lineage of lymphocytic choriomeningitis virus, tentatively named lineage V, in wood mice (Apodemus sylvaticus) from Germany. Wood mouse-derived lymphocytic choriomeningitis virus can be found across a substantially greater range than previously thought. Increased surveillance is needed to determine its geographic range and zoonotic potential.
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Hofmann J, Ulrich RG, Mehl C, Drewes S, Esser J, Loyen M, Zeichhardt H, Schoppmeyer K, Essen L, Güthoff W, Krüger DH. Hantavirus Disease Cluster Caused by Seoul Virus, Germany. Emerg Infect Dis 2024; 30:133-135. [PMID: 38147030 PMCID: PMC10756357 DOI: 10.3201/eid3001.230855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2023] Open
Abstract
A cluster of 3 persons in Germany experienced hantavirus disease with renal insufficiency. Reverse transcription PCR-based genotyping revealed infection by Seoul hantavirus transmitted from pet rats. Seoul virus could be responsible for disease clusters in Europe, and infected pet rats should be considered a health threat.
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Mehl C, Mätz-Rensing K, Linde J, Struve B, Ismer G, van Hümmel C, Ulrich RG, Tomaso H. Case report: tularaemia in a white-handed gibbon ( Hylobates lar), Germany. Int J Vet Sci Med 2023; 11:121-125. [PMID: 38125824 PMCID: PMC10732199 DOI: 10.1080/23144599.2023.2264084] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 09/05/2023] [Indexed: 12/23/2023] Open
Abstract
In 2021, a white-handed gibbon (Hylobates lar) succumbed to illness shortly after transfer from one zoo to another in Germany, due to Francisella tularensis subsp. holarctica infection. To determine the source of infection, whole genome sequencing of the gibbon-derived isolate was performed and wild pest rodents (and captive squirrels) from both zoos were screened for F. tularensis. The F. tularensis whole genome sequence obtained from the gibbon was closely related to previous subclade B.281 sequences obtained from hares from Baden-Wuerttemberg, the same region where the gibbon was first housed. However, F. tularensis DNA was detected in one Norway rat from the receiving zoo. Therefore, neither zoo can be excluded as the source of infection.
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Affiliation(s)
- Calvin Mehl
- Friedrich-Loeffler-Institut (FLI), Federal Research Institute for Animal Health, Institute of Novel and Emerging Infectious Diseases (INNT), Greifswald, Germany
- German Centre for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel- Riems, Greifswald, Germany
| | - Kerstin Mätz-Rensing
- German Primate Center GmbH (DPZ), Leibniz Institute for Primate Research, Göttingen, Germany
| | - Jörg Linde
- Friedrich-Loeffler-Institut (FLI), Federal Research Institute for Animal Health, Institute for Bacterial Infections and Zoonoses (IBIZ), Jena, Germany
| | | | | | | | - Rainer G. Ulrich
- Friedrich-Loeffler-Institut (FLI), Federal Research Institute for Animal Health, Institute of Novel and Emerging Infectious Diseases (INNT), Greifswald, Germany
- German Centre for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel- Riems, Greifswald, Germany
| | - Herbert Tomaso
- Friedrich-Loeffler-Institut (FLI), Federal Research Institute for Animal Health, Institute for Bacterial Infections and Zoonoses (IBIZ), Jena, Germany
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de Cock MP, de Vries A, Fonville M, Esser HJ, Mehl C, Ulrich RG, Joeres M, Hoffmann D, Eisenberg T, Schmidt K, Hulst M, van der Poel WHM, Sprong H, Maas M. Increased rat-borne zoonotic disease hazard in greener urban areas. Sci Total Environ 2023; 896:165069. [PMID: 37392874 DOI: 10.1016/j.scitotenv.2023.165069] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 07/03/2023]
Abstract
Urban greening has benefits for both human and environmental health. However, urban greening might also have negative effects as the abundance of wild rats, which can host and spread a great diversity of zoonotic pathogens, increases with urban greenness. Studies on the effect of urban greening on rat-borne zoonotic pathogens are currently unavailable. Therefore, we investigated how urban greenness is associated with rat-borne zoonotic pathogen prevalence and diversity, and translated this to human disease hazard. We screened 412 wild rats (Rattus norvegicus and Rattus rattus) from three cities in the Netherlands for 18 different zoonotic pathogens: Bartonella spp., Leptospira spp., Borrelia spp., Rickettsia spp., Anaplasma phagocytophilum, Neoehrlichia mikurensis, Spiroplasma spp., Streptobacillus moniliformis, Coxiella burnetii, Salmonella spp., methicillin-resistant Staphylococcus aureus (MRSA), extended-spectrum beta-lactamase (ESBL)/AmpC-producing Escherichia coli, rat hepatitis E virus (ratHEV), Seoul orthohantavirus, Cowpox virus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), Toxoplasma gondii and Babesia spp. We modelled the relationships between pathogen prevalence and diversity and urban greenness. We detected 13 different zoonotic pathogens. Rats from greener urban areas had a significantly higher prevalence of Bartonella spp. and Borrelia spp., and a significantly lower prevalence of ESBL/AmpC-producing E. coli and ratHEV. Rat age was positively correlated with pathogen diversity while greenness was not related to pathogen diversity. Additionally, Bartonella spp. occurrence was positively correlated with that of Leptospira spp., Borrelia spp. and Rickettsia spp., and Borrelia spp. occurrence was also positively correlated with that of Rickettsia spp. Our results show an increased rat-borne zoonotic disease hazard in greener urban areas, which for most pathogens was driven by the increase in rat abundance rather than pathogen prevalence. This highlights the importance of keeping rat densities low and investigating the effects of urban greening on the exposure to zoonotic pathogens in order to make informed decisions and to take appropriate countermeasures preventing zoonotic diseases.
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Affiliation(s)
- Marieke P de Cock
- Centre for Infectious diseases, National Institute for Public Health and the Environment, Bilthoven, Utrecht, the Netherlands; Quantitative Veterinary Epidemiology, Wageningen University & Research, Wageningen, Gelderland, the Netherlands.
| | - Ankje de Vries
- Centre for Infectious diseases, National Institute for Public Health and the Environment, Bilthoven, Utrecht, the Netherlands.
| | - Manoj Fonville
- Centre for Infectious diseases, National Institute for Public Health and the Environment, Bilthoven, Utrecht, the Netherlands.
| | - Helen J Esser
- Wildlife Ecology and Conservation Group, Wageningen University & Research, Wageningen, Gelderland, the Netherlands.
| | - Calvin Mehl
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Germany; Partner Site Hamburg-Lübeck-Borstel-Riems, German Center for Infection Research (DZIF), Greifswald-Insel Riems, Mecklenburg-Vorpommern, Germany.
| | - Rainer G Ulrich
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Germany; Partner Site Hamburg-Lübeck-Borstel-Riems, German Center for Infection Research (DZIF), Greifswald-Insel Riems, Mecklenburg-Vorpommern, Germany.
| | - Maike Joeres
- Institute of Epidemiology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Mecklenburg-Vorpommern, Germany.
| | - Donata Hoffmann
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Mecklenburg-Vorpommern, Germany.
| | - Tobias Eisenberg
- Department of Veterinary Medicine, Hessian State Laboratory, Giessen, Hessen, Germany.
| | - Katja Schmidt
- Microbiological Diagnostics, German Cancer Research Center (DKFZ), Heidelberg, Baden-Württemberg, Germany.
| | - Marcel Hulst
- Wageningen Bioveterinary Research, Wageningen University & Research, Lelystad, Flevoland, the Netherlands.
| | - Wim H M van der Poel
- Quantitative Veterinary Epidemiology, Wageningen University & Research, Wageningen, Gelderland, the Netherlands; Wageningen Bioveterinary Research, Wageningen University & Research, Lelystad, Flevoland, the Netherlands.
| | - Hein Sprong
- Centre for Infectious diseases, National Institute for Public Health and the Environment, Bilthoven, Utrecht, the Netherlands.
| | - Miriam Maas
- Centre for Infectious diseases, National Institute for Public Health and the Environment, Bilthoven, Utrecht, the Netherlands.
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Mehl C, Wylezich C, Geiger C, Schauerte N, Mätz-Rensing K, Nesseler A, Höper D, Linnenbrink M, Beer M, Heckel G, Ulrich RG. Reemergence of Lymphocytic Choriomeningitis Mammarenavirus, Germany. Emerg Infect Dis 2023; 29:631-634. [PMID: 36823667 PMCID: PMC9973704 DOI: 10.3201/eid2903.221822] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
Lymphocytic choriomeningitis mammarenavirus (LCMV) is a globally distributed zoonotic pathogen transmitted by house mice (Mus musculus). We report the reemergence of LCMV (lineages I and II) in wild house mice (Mus musculus domesticus) and LCMV lineage I in a diseased golden lion tamarin (Leontopithecus rosalia) from a zoo in Germany.
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Mehl C, Wylezich C, Geiger C, Schauerte N, Mätz-Rensing K, Nesseler A, Höper D, Linnenbrink M, Beer M, Heckel G, Ulrich RG. Use of Zoo Mice in Study of Lymphocytic Choriomeningitis Mammarenavirus, Germany (Response). Emerg Infect Dis 2023; 30:205-206. [PMID: 38146988 PMCID: PMC10756383 DOI: 10.3201/eid3001.231521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2023] Open
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Wernike K, Drewes S, Mehl C, Hesse C, Imholt C, Jacob J, Ulrich RG, Beer M. No Evidence for the Presence of SARS-CoV-2 in Bank Voles and Other Rodents in Germany, 2020–2022. Pathogens 2022; 11:pathogens11101112. [PMID: 36297169 PMCID: PMC9610409 DOI: 10.3390/pathogens11101112] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 11/16/2022] Open
Abstract
Rodentia is the most speciose mammalian order, found across the globe, with some species occurring in close proximity to humans. Furthermore, rodents are known hosts for a variety of zoonotic pathogens. Among other animal species, rodents came into focus when the severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) spread through human populations across the globe, initially as laboratory animals to study the viral pathogenesis and to test countermeasures. Under experimental conditions, some rodent species including several cricetid species are susceptible to SARS-CoV-2 infection and a few of them can transmit the virus to conspecifics. To investigate whether SARS-CoV-2 is also spreading in wild rodent populations in Germany, we serologically tested samples of free-ranging bank voles (Myodes glareolus, n = 694), common voles (Microtus arvalis, n = 2), house mice (Mus musculus, n = 27), brown or Norway rats (Rattus norvegicus, n = 97) and Apodemus species (n = 8) for antibodies against the virus. The samples were collected from 2020 to 2022 in seven German federal states. All but one sample tested negative by a multispecies ELISA based on the receptor-binding domain (RBD) of SARS-CoV-2. The remaining sample, from a common vole collected in 2021, was within the inconclusive range of the RBD-ELISA, but this result could not be confirmed by a surrogate virus neutralization test as the sample gave a negative result in this test. These results indicate that SARS-CoV-2 has not become highly prevalent in wild rodent populations in Germany.
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Affiliation(s)
- Kerstin Wernike
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, 17493 Greifswald-Insel Riems, Germany
- Correspondence:
| | - Stephan Drewes
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, 17493 Greifswald-Insel Riems, Germany
| | - Calvin Mehl
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, 17493 Greifswald-Insel Riems, Germany
- German Centre for Infection Research (DZIF), Site Hamburg-Lübeck-Borstel-Riems, 17493 Greifswald-Insel Riems, Germany
| | - Christin Hesse
- Rodent Research, Institute for Epidemiology and Pathogen Diagnostics, Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, 48161 Münster, Germany
| | - Christian Imholt
- Rodent Research, Institute for Epidemiology and Pathogen Diagnostics, Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, 48161 Münster, Germany
| | - Jens Jacob
- Rodent Research, Institute for Epidemiology and Pathogen Diagnostics, Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, 48161 Münster, Germany
| | - Rainer G. Ulrich
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, 17493 Greifswald-Insel Riems, Germany
- German Centre for Infection Research (DZIF), Site Hamburg-Lübeck-Borstel-Riems, 17493 Greifswald-Insel Riems, Germany
| | - Martin Beer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, 17493 Greifswald-Insel Riems, Germany
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Mehl C, Schoeman MC, Sanko TJ, Bezuidenhout C, Mienie CMS, Preiser W, Vosloo D. Wastewater treatment works change the intestinal microbiomes of insectivorous bats. PLoS One 2021; 16:e0247475. [PMID: 33657147 PMCID: PMC7928523 DOI: 10.1371/journal.pone.0247475] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 12/29/2020] [Indexed: 12/17/2022] Open
Abstract
Mammals, born with a near-sterile intestinal tract, are inoculated with their mothers’ microbiome during birth. Thereafter, extrinsic and intrinsic factors shape their intestinal microbe assemblage. Wastewater treatment works (WWTW), sites synonymous with pollutants and pathogens, receive influent from domestic, agricultural and industrial sources. The high nutrient content of wastewater supports abundant populations of chironomid midges (Diptera), which transfer these toxicants and potential pathogens to their predators, such as the banana bat Neoromicia nana (Vespertilionidae), thereby influencing their intestinal microbial assemblages. We used next generation sequencing and 16S rRNA gene profiling to identify and compare intestinal bacteria of N. nana at two reference sites and two WWTW sites. We describe the shared intestinal microbiome of the insectivorous bat, N. nana, consisting of seven phyla and eleven classes. Further, multivariate analyses revealed that location was the most significant driver (sex, body size and condition were not significant) of intestinal microbiome diversity. Bats at WWTW sites exhibited greater intestinal microbiota diversity than those at reference sites, likely due to wastewater exposure, stress and/or altered diet. Changes in their intestinal microbiota assemblages may allow these bats to cope with concomitant stressors.
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Affiliation(s)
- Calvin Mehl
- School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - M. Corrie Schoeman
- School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Tomasz J. Sanko
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
| | - Carlos Bezuidenhout
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
| | - Charlotte M. S. Mienie
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
| | - Wolfgang Preiser
- Division of Medical Virology, Department of Pathology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, Cape Town, South Africa
- National Health Laboratory Service (NHLS), Tygerberg Hospital, Tygerberg, South Africa
| | - Dalene Vosloo
- Centre for Functional Biodiversity, School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa
- * E-mail:
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Chou B, Choe J, Park H, Mehl C, Bentley E, Jones G. Linear Accelerator-Based Frameless Stereotactic Radiosurgery for Trigeminal Neuralgia with Optical Surface Monitoring: A Community Cancer Center Experience. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mehl C, Marsden G, Schoeman MC, Vosloo D. Coping with environmental stress: The effects of wastewater pollutants on energy stores and leptin levels in insectivorous bats. Mamm Biol 2016. [DOI: 10.1016/j.mambio.2016.07.004] [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: 11/17/2022]
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Moosig F, Czech N, Mehl C, Henze E, Zeuner RA, Kneba M, Schröder JO. Correlation between 18-fluorodeoxyglucose accumulation in large vessels and serological markers of inflammation in polymyalgia rheumatica: a quantitative PET study. Ann Rheum Dis 2004; 63:870-3. [PMID: 15194587 PMCID: PMC1755055 DOI: 10.1136/ard.2003.011692] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To quantify 18-fluorodeoxyglucose (FDG) accumulation in large vessels in patients with polymyalgia rheumatica by positron emission tomography (PET), and to compare these data with serological markers of inflammation. METHODS 13 untreated patients with active polymyalgia rheumatica underwent FDG positron emission tomography; eight were analysed in a second PET when in clinical remission. Six patients with other highly inflammatory conditions served as controls. For quantitative analysis, FDG uptake over nine defined vascular regions, divided by an individual background value, was expressed as a region of interest (ROI) index. These data were compared with the clinical status of the patient and with erythrocyte sedimentation rate (ESR), C reactive protein, haemoglobin, and platelet and leucocyte counts. RESULTS By visual evaluation, 12 of the 13 patients showed an increased tracer uptake of the aorta or its major branches. By quantitative analysis, FDG uptake was significantly increased in polymyalgia rheumatica. In patients with active disease, the mean ROI index for all vascular regions exceeded that of controls by 70% (mean (SD): 1.58 (0.37) v 0.93 (0.12); p<0.001). In the eight patients who underwent follow up PET, the index declined substantially. In active polymyalgia rheumatica, FDG uptake was significantly correlated with C reactive protein (r = 0.8), ESR (r = 0.79), and platelet counts (r = 0.68). CONCLUSIONS The observed FDG accumulation in the aorta and its branches and a strong correlation between tracer uptake and markers of inflammation is suggestive of large vessel arteritis. Quantitative ROI analysis appears to be a sensitive tool for detecting such inflammation.
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Affiliation(s)
- F Moosig
- 2nd Medical Department, University Hospital of Schleswig-Holstein, Campus Kiel, Chemnitzstr 33, 24116 Kiel, Germany.
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Pfistner B, Mehl C, Klöss M, Löffler M, Herrmann-Frank A, Diehl V. [Quality standards and their assurance for study centers in the competence network malignant lymphoma]. Klin Padiatr 2003; 215:341-4. [PMID: 14677100 DOI: 10.1055/s-2003-45493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND The aim of most of the trials of the Competence Network Malignant Lymphoma is to optimize the standard treatment of lymphoma using only registered drugs in the case of medicinal therapies (quality assurance protocols). In contrast to regulatory trials, special regulations for quality assurance protocols are not given by the legislature. However, there is agreement that also for this type of studies the declaration of Helsinki and the Guidelines of the International Conference on Harmonisation (ICH) are relevant. The ICH Guidelines must be formulated to take into account the specific situation of quality assurance protocols and to ensure at the same time efficiency and transparency of these studies. This is the aim of the quality management of the study groups in the Competence Network Malignant Lymphoma. METHOD The quality assurance measures already established in the study groups are being expanded to a comprehensive quality management concept in agreement with the ICH Guidelines and allowing for the situation of quality assurance protocols. To this end, a working group for quality management (AG-QM) has been set up to define and establish general quality standards for all aspects of planning, executing and evaluating quality assurance protocols in study centers. RESULTS The AG-QM has developed a system of Standard Operating Procedures (SOPs) reflecting all working procedures of the study centers. Furthermore, evaluation parameters for the quality of trial execution have been identified and the harmonisation of documentation parameters has been initiated. Term definitions are collected and their harmonisation coordinated. CONCLUSIONS Development of quality standards is the first step of quality management. To ensure the realisation of these standards in practice, the AG-QM will establish quality assurance measures including continuous reevaluation of quality criteria and actualization of quality standards if necessary.
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Affiliation(s)
- B Pfistner
- Studienzentrale der DHSG, Koordinierungszentrum für Klinische Studien Köln (KKSK), Klinikum der Universität zu Köln, Germany.
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Kim ZG, Mehl C, Lorenz M, Gutt CN. Impact of laparoscopic CO2-insufflation on tumor-associated molecules in cultured colorectal cancer cells. Surg Endosc 2002; 16:1182-6. [PMID: 12189480 DOI: 10.1007/s00464-001-9194-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2001] [Accepted: 11/26/2001] [Indexed: 10/27/2022]
Abstract
BACKGROUND Laparoscopic CO2-insufflation is believed to stimulate proliferation and metastatic potential of gastrointestinal carcinomas. E-cadherin, I-CAM1, I-CAM2, and CD44 are involved into the metastatic process of different cancer cell lines. The current study investigates the influence of CO2-insufflation on the expression of E-cadherin, I-CAM1, I-CAM2, and CD44 in vitro. METHODS CX-2 and CC531 colon carcinoma cells (human/rat) were exposed to pneumoperitoneal CO2-insufflation. E-cadherin, I-CAM1, I-CAM2, and CD44 were measured 0, 12, 24, 48, and 72 h after CO2-insufflation using flowcytometry. Control groups were exposed to room air. Data were analyzed by the Wilcoxon-Mann-Whitney U-test. RESULTS Both cell lines showed significant alteration in E-cadherin, I-CAM1, and CD44 expression after CO2 exposure (p <0.05). No significant differences were found regarding I-CAM2 expression. CONCLUSION The present study demonstrates CO2-insufflation to influence the expression of E-cadherin, I-CAM1 and CD44. Whether these changes increases the metastatic potential of colorectal cancer cells in vivo needs further investigation.
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Affiliation(s)
- Z G Kim
- Department of General and Vascular Surgery, Johann Wolfgang Goethe-University, Theodor-Stern-Kai 7, D-60590 Frankfurt/Main, Germany
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Deichmann KA, Heinzmann A, Forster J, Dischinger S, Mehl C, Brueggenolte E, Hildebrandt F, Moseler M, Kuehr J. Linkage and allelic association of atopy and markers flanking the IL4-receptor gene. Clin Exp Allergy 1998; 28:151-5. [PMID: 9515586 DOI: 10.1046/j.1365-2222.1998.00159.x] [Citation(s) in RCA: 113] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Atopy, a clinical syndrome characterized by heightened IgE responsiveness, is largely determined by genetic factors. The disease may well be heterogeneous but the mode of inheritance is unknown. Several genes have been named which affected IgE responsiveness. However, results are conflicting reflecting heterogeneity and a complicated inheritance pattern of the atopic syndrome. In 1994 linkage of the 5q32 gene region and elevated total IgE levels were reported, leaving the IL4 gene as a prominent candidate. OBJECTIVES We were interested in a possible involvement of the IL4-receptor gene in the development of atopy. METHODS We employed sib-pair linkage analysis using highly polymorphic microsatellite markers within and flanking the IL4 receptor gene in atopic families, characterized for specific sensitization to inhalant allergens and elevated total serum IgE. Allele sizes were determined for all microsatellite probes to allow transmission disequilibrium analysis. RESULTS We found significant sharing of maternal but not paternal alleles in affected sibs from two independent populations, both of which presented enhanced IgE responsiveness. Linkage and maternal inheritance could be confirmed by transmission disequilibrium analysis. CONCLUSIONS We conclude from our findings that maternal inheritance of a gene in the chromosome 16p12 region increases the risk for enhanced IgE responsiveness. The most prominent candidate in this region is represented by the IL4 receptor gene.
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Affiliation(s)
- K A Deichmann
- University Children's Hospital, University of Freiburg, Germany
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Schoeffler P, Haberber JP, Concina D, Mehl C, Fornecker ML. [A complication of anesthesia via interscalene block of the brachial plexus: peridural cervico-thoracic anesthesia]. Anesth Analg (Paris) 1978; 35:199-204. [PMID: 677498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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