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Rheuban JE, Gassett PR, McCorkle DC, Hunt CW, Liebman M, Bastidas C, O'Brien-Clayton K, Pimenta AR, Silva E, Vlahos P, Woosley RJ, Ries J, Liberti CM, Grear J, Salisbury J, Brady DC, Guay K, LaVigne M, Strong AL, Stancioff E, Turner E. Synoptic assessment of coastal total alkalinity through community science. Environ Res Lett 2021. [PMID: 35069797 DOI: 10.4211/hs.4364cffedc7e49d49255eef5f8e83148] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Comprehensive sampling of the carbonate system in estuaries and coastal waters can be difficult and expensive because of the complex and heterogeneous nature of near-shore environments. We show that sample collection by community science programs is a viable strategy for expanding estuarine carbonate system monitoring and prioritizing regions for more targeted assessment. 'Shell Day' was a single-day regional water monitoring event coordinating coastal carbonate chemistry observations by 59 community science programs and seven research institutions in the northeastern United States, in which 410 total alkalinity (TA) samples from 86 stations were collected. Field replicates collected at both low and high tides had a mean standard deviation between replicates of 3.6 ± 0.3 μmol kg-1 (σ mean ± SE, n = 145) or 0.20 ± 0.02%. This level of precision demonstrates that with adequate protocols for sample collection, handling, storage, and analysis, community science programs are able to collect TA samples leading to high-quality analyses and data. Despite correlations between salinity, temperature, and TA observed at multiple spatial scales, empirical predictions of TA had relatively high root mean square error >48 μmol kg-1. Additionally, ten stations displayed tidal variability in TA that was not likely driven by low TA freshwater inputs. As such, TA cannot be predicted accurately from salinity using a single relationship across the northeastern US region, though predictions may be viable at more localized scales where consistent freshwater and seawater endmembers can be defined. There was a high degree of geographic heterogeneity in both mean and tidal variability in TA, and this single-day snapshot sampling identified three patterns driving variation in TA, with certain locations exhibiting increased risk of acidification. The success of Shell Day implies that similar community science based events could be conducted in other regions to not only expand understanding of the coastal carbonate system, but also provide a way to inventory monitoring assets, build partnerships with stakeholders, and expand education and outreach to a broader constituency.
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Affiliation(s)
- J E Rheuban
- Woods Hole Oceanographic Institution, Department of Marine Chemistry and Geochemistry, Woods Hole, MA 02543, United States of America
- Woods Hole Oceanographic Institution, Woods Hole Sea Grant, Woods Hole, MA 02543, United States of America
| | - P R Gassett
- University of Maine, Orono, ME 04469, United States of America
- Maine Sea Grant, Orono, ME 04469, United States of America
- Equally contributing first author
| | - D C McCorkle
- Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA 02543, United States of America
| | - C W Hunt
- University of New Hampshire, Durham, NH 03824, United States of America
| | - M Liebman
- US Environmental Protection Agency Region 1, Boston, MA 02109, United States of America
| | - C Bastidas
- MIT Sea Grant, Cambridge, MA 02139, United States of America
| | - K O'Brien-Clayton
- Connecticut Department of Energy and Environmental Protection, Hartford, CT 06106, United States of America
| | - A R Pimenta
- US Environmental Protection Agency, Atlantic Coastal Environmental Sciences Division, Narragansett, RI 02882, United States of America
| | - E Silva
- Northeastern Regional Association of Coastal Ocean Observing Systems (NERACOOS), Portsmouth, NH 03801, United States of America
| | - P Vlahos
- University of Connecticut, Storrs, CT 06269, United States of America
| | - R J Woosley
- Massachusetts Institute of Technology, Center for Global Change Science, Cambridge, MA 02139, United States of America
| | - J Ries
- Northeastern University, Marine Science Center, Department of Marine & Environmental Science, Nahant, MA 01908, United States of America
| | - C M Liberti
- University of Maine, Orono, ME 04469, United States of America
| | - J Grear
- US Environmental Protection Agency, Atlantic Coastal Environmental Sciences Division, Narragansett, RI 02882, United States of America
| | - J Salisbury
- University of New Hampshire, Durham, NH 03824, United States of America
| | - D C Brady
- University of Maine, Orono, ME 04469, United States of America
| | - K Guay
- Bowdoin College, Department of Earth and Oceanographic Science, Brunswick, ME 04011, United States of America
| | - M LaVigne
- Bowdoin College, Department of Earth and Oceanographic Science, Brunswick, ME 04011, United States of America
| | - A L Strong
- Hamilton College, Environmental Studies Program, Clinton, NY 13323, United States of America
| | - E Stancioff
- Maine Sea Grant, Orono, ME 04469, United States of America
- University of Maine Cooperative Extension Office, Waldoboro, ME 04572, United States of America
| | - E Turner
- National Oceanic and Atmospheric Administration, National Centers for Coastal Ocean Science, Silver Spring, MD 20910, United States of America, Retired
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Rheuban JE, Gassett PR, McCorkle DC, Hunt CW, Liebman M, Bastidas C, O’Brien-Clayton K, Pimenta AR, Silva E, Vlahos P, Woosley RJ, Ries J, Liberti CM, Grear J, Salisbury J, Brady DC, Guay K, LaVigne M, Strong AL, Stancioff E, Turner E. Synoptic assessment of coastal total alkalinity through community science. Environ Res Lett 2021; 16:1-14. [PMID: 35069797 PMCID: PMC8780830 DOI: 10.1088/1748-9326/abcb39] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Comprehensive sampling of the carbonate system in estuaries and coastal waters can be difficult and expensive because of the complex and heterogeneous nature of near-shore environments. We show that sample collection by community science programs is a viable strategy for expanding estuarine carbonate system monitoring and prioritizing regions for more targeted assessment. 'Shell Day' was a single-day regional water monitoring event coordinating coastal carbonate chemistry observations by 59 community science programs and seven research institutions in the northeastern United States, in which 410 total alkalinity (TA) samples from 86 stations were collected. Field replicates collected at both low and high tides had a mean standard deviation between replicates of 3.6 ± 0.3 μmol kg-1 (σ mean ± SE, n = 145) or 0.20 ± 0.02%. This level of precision demonstrates that with adequate protocols for sample collection, handling, storage, and analysis, community science programs are able to collect TA samples leading to high-quality analyses and data. Despite correlations between salinity, temperature, and TA observed at multiple spatial scales, empirical predictions of TA had relatively high root mean square error >48 μmol kg-1. Additionally, ten stations displayed tidal variability in TA that was not likely driven by low TA freshwater inputs. As such, TA cannot be predicted accurately from salinity using a single relationship across the northeastern US region, though predictions may be viable at more localized scales where consistent freshwater and seawater endmembers can be defined. There was a high degree of geographic heterogeneity in both mean and tidal variability in TA, and this single-day snapshot sampling identified three patterns driving variation in TA, with certain locations exhibiting increased risk of acidification. The success of Shell Day implies that similar community science based events could be conducted in other regions to not only expand understanding of the coastal carbonate system, but also provide a way to inventory monitoring assets, build partnerships with stakeholders, and expand education and outreach to a broader constituency.
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Affiliation(s)
- J E Rheuban
- Woods Hole Oceanographic Institution, Department of Marine Chemistry and Geochemistry, Woods Hole, MA 02543, United States of America
- Woods Hole Oceanographic Institution, Woods Hole Sea Grant, Woods Hole, MA 02543, United States of America
| | - P R Gassett
- University of Maine, Orono, ME 04469, United States of America
- Maine Sea Grant, Orono, ME 04469, United States of America
- Equally contributing first author
| | - D C McCorkle
- Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA 02543, United States of America
| | - C W Hunt
- University of New Hampshire, Durham, NH 03824, United States of America
| | - M Liebman
- US Environmental Protection Agency Region 1, Boston, MA 02109, United States of America
| | - C Bastidas
- MIT Sea Grant, Cambridge, MA 02139, United States of America
| | - K O’Brien-Clayton
- Connecticut Department of Energy and Environmental Protection, Hartford, CT 06106, United States of America
| | - A R Pimenta
- US Environmental Protection Agency, Atlantic Coastal Environmental Sciences Division, Narragansett, RI 02882, United States of America
| | - E Silva
- Northeastern Regional Association of Coastal Ocean Observing Systems (NERACOOS), Portsmouth, NH 03801, United States of America
| | - P Vlahos
- University of Connecticut, Storrs, CT 06269, United States of America
| | - R J Woosley
- Massachusetts Institute of Technology, Center for Global Change Science, Cambridge, MA 02139, United States of America
| | - J Ries
- Northeastern University, Marine Science Center, Department of Marine & Environmental Science, Nahant, MA 01908, United States of America
| | - C M Liberti
- University of Maine, Orono, ME 04469, United States of America
| | - J Grear
- US Environmental Protection Agency, Atlantic Coastal Environmental Sciences Division, Narragansett, RI 02882, United States of America
| | - J Salisbury
- University of New Hampshire, Durham, NH 03824, United States of America
| | - D C Brady
- University of Maine, Orono, ME 04469, United States of America
| | - K Guay
- Bowdoin College, Department of Earth and Oceanographic Science, Brunswick, ME 04011, United States of America
| | - M LaVigne
- Bowdoin College, Department of Earth and Oceanographic Science, Brunswick, ME 04011, United States of America
| | - A L Strong
- Hamilton College, Environmental Studies Program, Clinton, NY 13323, United States of America
| | - E Stancioff
- Maine Sea Grant, Orono, ME 04469, United States of America
- University of Maine Cooperative Extension Office, Waldoboro, ME 04572, United States of America
| | - E Turner
- National Oceanic and Atmospheric Administration, National Centers for Coastal Ocean Science, Silver Spring, MD 20910, United States of America, Retired
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Wehrhan F, Büttner-Herold M, Möbius P, Ries J, Weber M. P3 Peripheral tolerance in regional lymph nodes is associated with parameters of malignancy in oral squamous cell carcinomas. Oral Oncol 2015. [DOI: 10.1016/j.oraloncology.2015.02.051] [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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Weber M, Büttner-Herold M, Möbius P, Ries J, Neukam F, Wehrhan F. P2 Correlation of macrophage polarization and Gal-3 expressing cells in oral squamous cell carcinomas with the occurrence of lymph node metastases. Oral Oncol 2015. [DOI: 10.1016/j.oraloncology.2015.02.050] [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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5
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Klotzsch E, Schoen I, Ries J, Renn A, Sandoghdar V, Vogel V. Conformational distribution of surface-adsorbed fibronectin molecules explored by single molecule localization microscopy. Biomater Sci 2014; 2:883-892. [DOI: 10.1039/c3bm60262a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Weber M, Büttner-Herold M, Möbius P, Ries J, Wehrhan F, Neukam I. Macrophage polarization in oral squamous cell carcinomas (oscc). Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.517] [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: 11/29/2022]
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7
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Honisch B, Ridgwell A, Schmidt DN, Thomas E, Gibbs SJ, Sluijs A, Zeebe R, Kump L, Martindale RC, Greene SE, Kiessling W, Ries J, Zachos JC, Royer DL, Barker S, Marchitto TM, Moyer R, Pelejero C, Ziveri P, Foster GL, Williams B. The Geological Record of Ocean Acidification. Science 2012; 335:1058-63. [DOI: 10.1126/science.1208277] [Citation(s) in RCA: 672] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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8
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Landgraf S, Amado I, Purkhart R, Ries J, Olié JP, van der Meer E. Visuo-spatial cognition in schizophrenia: confirmation of a preference for local information processing. Schizophr Res 2011; 127:163-70. [PMID: 21186098 DOI: 10.1016/j.schres.2010.11.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Revised: 11/18/2010] [Accepted: 11/29/2010] [Indexed: 10/18/2022]
Abstract
During visuo-spatial cognitive tasks, patients with schizophrenia show a preference for local (detailed) rather than global (holistic) information processing. The efficiency of such information processing is influenced by task difficulty. We tested whether patients' preference for local processing would persist if task demands favored global or local processing. Twenty-four stabilized patients with schizophrenia (SZ) and 25 healthy, matched controls (C) were tested in a mental mirroring task. Task difficulty was manipulated while stimulus surface structures were maintained unchanged. Information processing was assessed by recording eye movements. SZ were slower than C in the easiest condition but they made more errors than C in the more difficult conditions. Further, SZ did not adapt their average fixation duration to task demands resulting in longer fixation duration in the easiest condition and shorter fixation duration in the most difficult condition compared to C. These findings suggest that patients employ local information processing even when it is maladaptive for task demands. That is, patients do not adapt their fixation duration to task demands implicating (i) a preference for scanning local stimuli features and (ii) information processing inflexibility. These features need to be taken into account when evaluating visuo-spatial cognitive performance in schizophrenia.
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Affiliation(s)
- S Landgraf
- Humboldt-Universität zu Berlin, Institute of Psychology, Rudower Chaussee 18, 12489 Berlin, Germany.
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9
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Wehrhan F, Hyckel P, Amann K, Ries J, Stockmann P, Schlegel K, Neukam F, Nkenke E. Msx-1 is suppressed in bisphosphonate-exposed jaw bone analysis of bone turnover-related cell signalling after bisphosphonate treatment. Oral Dis 2011; 17:433-42. [PMID: 21366807 DOI: 10.1111/j.1601-0825.2010.01778.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Bone-destructive disease treatments include bisphosphonates and antibodies against receptor activator for nuclear factor κB ligand (aRANKL). Osteonecrosis of the jaw (ONJ) is a side-effect. Aetiopathology models failed to explain their restriction to the jaw. The osteoproliferative transcription factor Msx-1 is expressed constitutively only in mature jaw bone. Msx-1 expression might be impaired in bisphosphonate-related ONJ. This study compared the expression of Msx-1, Bone Morphogenetic Protein (BMP)-2 and RANKL, in ONJ-affected and healthy jaw bone. MATERIAL AND METHODS An automated immunohistochemistry-based alkaline phosphatase-anti-alkaline phosphatase method was used on ONJ-affected and healthy jaw bone samples (n = 20 each): cell-number ratio (labelling index, Bonferroni adjustment). Real-time RT-PCR was performed to quantitatively compare Msx-1, BMP-2, RANKL and GAPDH mRNA levels. RESULTS Labelling indices were significantly lower for Msx-1 (P < 0.03) and RANKL (P < 0.003) and significantly higher (P < 0.02) for BMP-2 in ONJ compared with healthy bone. Expression was sevenfold lower (P < 0.03) for Msx-1, 22-fold lower (P < 0.001) for RANKL and eightfold higher (P < 0.02) for BMP-2 in ONJ bone. CONCLUSIONS Msx-1, RANKL suppression and BMP-2 induction were consistent with the bisphosphonate-associated osteopetrosis and impaired bone remodelling in BP- and aRANKL-induced ONJ. Msx-1 suppression suggested a possible explanation of the exclusivity of ONJ in jaw bone. Functional analyses of Msx-1- RANKL interaction during bone remodelling should be performed in the future.
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Affiliation(s)
- F Wehrhan
- Department of Oral and Maxillofacial Surgery, University of Erlangen-Nuremberg, Erlangen, Germany.
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10
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Mollaoglu N, Metzler P, Zenk J, Nkenke E, Neukam FW, Ries J. Prediction of recurrence using exfoliative cytology and melanoma-associated antigen-A mRNA analysis following wide excision of oral squamous cell carcinoma: short report. Cytopathology 2010; 22:387-91. [PMID: 21054590 DOI: 10.1111/j.1365-2303.2010.00814.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND Oral squamous cell carcinoma (OSCC) is the sixth most common cancer. The local recurrence of OSSC might result from the existence of occult cancer cells around tumour margins. Exfoliative cytology has lately gained great importance as a method for obtaining RNA samples from suspicious oral mucosal lesions in order to carry out molecular diagnosis. In addition, melanoma associated-A antigens (MAGE-A) are expressed in various tumours and their detection is a highly accurate sign that cancer cells are present. OBJECTIVE The prediction of a recurrence using MAGE-A mRNA expression analysis to follow-up OSCC cases using a newly established molecular diagnostic technique applied to cytological materials. METHODS RNA was extracted from three recurrent OSCC cases and from 20 healthy volunteers as a control group using a cytobrush. The expression of MAGE-A3, A4, A6, A10 and A12 was investigated in these specimens using quantitative real-time (RT-PCR). RESULTS There was no expression of MAGE-A in the specimens of normal oral mucosa. However, the expression analysis of five different MAGE-A genes indicated a high potential for malignant change in biopsy-proven recurrent OSCC cases. Except for MAGE-A10, the rest of the genes were expressed in different ratios by the three recurrent cases, which had been determined on histopathology to be OSCC or carcinoma in situ. CONCLUSION It is suggested that analysis of MAGE-A expression may be used as a risk prediction method in the diagnosis of recurrence after wide excision of OSCC to enhance the accuracy of exfoliative cytology, which has limitations due to false negative and false positive results.
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Affiliation(s)
- N Mollaoglu
- Department of Oral and Maxillofacial Surgery, University of Erlangen, Erlangen, Germany.
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11
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Nelson AL, Ries J, Bagnoli F, Dahlberg S, Fälker S, Rounioja S, Tschöp J, Morfeldt E, Ferlenghi I, Hilleringmann M, Holden DW, Rappuoli R, Normark S, Barocchi MA, Henriques-Normark B. RrgA is a pilus-associated adhesin in Streptococcus pneumoniae. Mol Microbiol 2007; 66:329-40. [PMID: 17850254 PMCID: PMC2170534 DOI: 10.1111/j.1365-2958.2007.05908.x] [Citation(s) in RCA: 131] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Adherence to host cells is important in microbial colonization of a mucosal surface, and Streptococcus pneumoniae adherence was significantly enhanced by expression of an extracellular pilus composed of three subunits, RrgA, RrgB and RrgC. We sought to determine which subunit(s) confers adherence. Bacteria deficient in RrgA are significantly less adherent than wild-type organisms, while overexpression of RrgA enhances adherence. Recombinant monomeric RrgA binds to respiratory cells, as does RrgC with less affinity, and pre-incubation of epithelial cells with RrgA reduces adherence of wild-type piliated pneumococci. Non-adherent RrgA-negative, RrgB- and RrgC-positive organisms produce pili, suggesting that pilus-mediated adherence is due to expression of RrgA, rather than the pilus backbone itself. In contrast, RrgA-positive strains with disrupted rrgB and rrgC genes exhibit wild-type adherence despite failure to produce pili by Western blot or immunoelectron microscopy. The density of bacteria colonizing the upper respiratory tract of mice inoculated with piliated RrgA-negative pneumococci was significantly less compared with wild-type; in contrast, non-piliated pneumococci expressing non-polymeric RrgA had similar numbers of bacteria in the nasopharynx as piliated wild-type bacteria. These data suggest that RrgA is central in pilus-mediated adherence and disease, even in the absence of polymeric pilus production.
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Affiliation(s)
- A L Nelson
- Swedish Institute for Infectious Disease Control and Department of Microbiology, Tumor and Cell Biology, Karolinska InstitutetStockholm, Sweden
| | - J Ries
- Swedish Institute for Infectious Disease Control and Department of Microbiology, Tumor and Cell Biology, Karolinska InstitutetStockholm, Sweden
| | | | - S Dahlberg
- Swedish Institute for Infectious Disease Control and Department of Microbiology, Tumor and Cell Biology, Karolinska InstitutetStockholm, Sweden
| | - S Fälker
- Swedish Institute for Infectious Disease Control and Department of Microbiology, Tumor and Cell Biology, Karolinska InstitutetStockholm, Sweden
| | - S Rounioja
- Swedish Institute for Infectious Disease Control and Department of Microbiology, Tumor and Cell Biology, Karolinska InstitutetStockholm, Sweden
| | - J Tschöp
- Swedish Institute for Infectious Disease Control and Department of Microbiology, Tumor and Cell Biology, Karolinska InstitutetStockholm, Sweden
| | - E Morfeldt
- Swedish Institute for Infectious Disease Control and Department of Microbiology, Tumor and Cell Biology, Karolinska InstitutetStockholm, Sweden
| | | | | | - D W Holden
- Centre for Molecular Microbiology and Infection, Imperial CollegeLondon, UK
| | | | - S Normark
- Swedish Institute for Infectious Disease Control and Department of Microbiology, Tumor and Cell Biology, Karolinska InstitutetStockholm, Sweden
| | | | - B Henriques-Normark
- Swedish Institute for Infectious Disease Control and Department of Microbiology, Tumor and Cell Biology, Karolinska InstitutetStockholm, Sweden
- E-mail ; Tel. (+46) 8 457 24 13; Fax (+46) 8 30 25 66
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12
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Meacci G, Ries J, Fischer-Friedrich E, Kahya N, Schwille P, Kruse K. Mobility of Min-proteins in Escherichia coli measured by fluorescence correlation spectroscopy. Phys Biol 2006; 3:255-63. [PMID: 17200601 DOI: 10.1088/1478-3975/3/4/003] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [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: 11/12/2022]
Abstract
In the bacterium Escherichia coli, selection of the division site involves pole-to-pole oscillations of the proteins MinD and MinE. Different oscillation mechanisms based on cooperative effects between Min-proteins and on the exchange of Min-proteins between the cytoplasm and the cytoplasmic membrane have been proposed. The parameters characterizing the dynamics of the Min-proteins in vivo are not known. It has therefore been difficult to compare the models quantitatively with experiments. Here, we present in vivo measurements of the mobility of MinD and MinE using fluorescence correlation spectroscopy. Two distinct timescales are clearly visible in the correlation curves. While the faster timescale can be attributed to cytoplasmic diffusion, the slower timescale could result from diffusion of membrane-bound proteins or from protein exchange between the cytoplasm and the membrane. We determine the diffusion constant of cytoplasmic MinD to be approximately 16 microm(2) s(-1), while for MinE we find about 10 microm(2) s(-1), independently of the processes responsible for the slower time-scale. The implications of the measured values for the oscillation mechanism are discussed.
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Affiliation(s)
- G Meacci
- Max-Planck Institute for the Physics of Complex Systems, Dresden, Germany
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13
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Vairaktaris E, Yapijakis C, Serefoglou Z, Vylliotis A, Ries J, Nkenke E, Wiltfang J, Derka S, Vassiliou S, Springer I, Kessler P, Neukam FW. Plasminogen activator inhibitor-1 polymorphism is associated with increased risk for oral cancer. Oral Oncol 2006; 42:888-92. [PMID: 16730474 DOI: 10.1016/j.oraloncology.2005.12.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [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: 10/19/2005] [Revised: 12/05/2005] [Accepted: 12/06/2005] [Indexed: 11/24/2022]
Abstract
In light of the recently observed contribution of thrombosis-related factors to carcinogenesis, we investigated the possible association of plasminogen activator inhibitor-1 (PAI-1) with increased risk for oral cancer. In DNA samples of 104 patients with oral squamous cell carcinoma and 106 healthy controls of comparable ethnicity, age and sex, we studied the 4G/5G polymorphism in the PAI-1 gene, which affects its expression. The mutant 4G allele and carrier frequencies were significantly increased in patients compared to controls (65.9% versus 49.5%; 88.5% versus 69.8% respectively, P<0.01). That increase was even higher in patients with a positive family history for thrombophilia or without one for cancer (P<0.001). Interestingly, significant difference from controls was observed only in patients with cancer stages I and II. These findings suggest that the 4G allele, by resulting in higher PAI-1 expression, is a major contributing factor in early stages of oral oncogenesis. Possibly, increased PAI-1 promotes initial development of oral cancer through regulation of cell detachment and delays further tumor progression by inhibiting vascularization.
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Affiliation(s)
- E Vairaktaris
- Department of Maxillofacial Surgery, University of Athens Medical School, Vas. Sofias 93 and Dim. Soutsou 1, Athens 11521, Greece
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14
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Kan B, Ries J, Normark BH, Chang FY, Feldman C, Ko WC, Rello J, Snydman DR, Yu VL, Ortqvist A. Endocarditis and pericarditis complicating pneumococcal bacteraemia, with special reference to the adhesive abilities of pneumococci: results from a prospective study. Clin Microbiol Infect 2006; 12:338-44. [PMID: 16524410 DOI: 10.1111/j.1469-0691.2006.01363.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [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: 11/27/2022]
Abstract
The incidence of pneumococcal cardiac infections is unknown and the pathogenicity of such complications is poorly understood. In a prospective, international, observational study, eight of 844 patients hospitalised with Streptococcus pneumoniae bacteraemia developed endocarditis (n = 5) or pericarditis (n = 3). The clinical and microbiological characteristics of these patients were compared with those of control patients. The corresponding incidence of pneumococcal endocarditis was c. 1-3/1 million inhabitants/year. There was no common pattern in the medical history of patients with an infectious cardiac complication. The severity of illness upon admission was comparable with that for patients without infectious cardiac complications, as was the 14-day mortality rate (25% and 17%, respectively). For encapsulated S. pneumoniae, no significant differences were found between patients with infectious cardiac complications and controls in adherence assays. However, non-encapsulated S. pneumoniae showed higher hydrophobicity and increased adherence to human epithelial cells.
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Affiliation(s)
- B Kan
- Unit of Infectious Diseases, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, Solna, Sweden
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15
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Barocchi MA, Ries J, Zogaj X, Hemsley C, Albiger B, Kanth A, Dahlberg S, Fernebro J, Moschioni M, Masignani V, Hultenby K, Taddei AR, Beiter K, Wartha F, von Euler A, Covacci A, Holden DW, Normark S, Rappuoli R, Henriques-Normark B. A pneumococcal pilus influences virulence and host inflammatory responses. Proc Natl Acad Sci U S A 2006; 103:2857-62. [PMID: 16481624 PMCID: PMC1368962 DOI: 10.1073/pnas.0511017103] [Citation(s) in RCA: 325] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Streptococcus pneumoniae (pneumococcus) is a major cause of morbidity and mortality world-wide. The initial event in invasive pneumococcal disease is the attachment of encapsulated pneumococci to epithelial cells in the upper respiratory tract. This work provides evidence that initial bacterial adhesion and subsequent ability to cause invasive disease is enhanced by pili, long organelles able to extend beyond the polysaccharide capsule, previously unknown to exist in pneumococci. These adhesive pili-like appendages are encoded by the pneumococcal rlrA islet, present in some, but not all, clinical isolates. Introduction of the rlrA islet into an encapsulated rlrA-negative isolate allowed pilus expression, enhanced adherence to lung epithelial cells, and provided a competitive advantage upon mixed intranasal challenge of mice. Furthermore, a pilus-expressing rlrA islet-positive clinical isolate was more virulent than a nonpiliated deletion mutant, and it out-competed the mutant in murine models of colonization, pneumonia, and bacteremia. Additionally, piliated pneumococci evoked a higher TNF response during systemic infection, compared with nonpiliated derivatives, suggesting that pneumococcal pili not only contribute to adherence and virulence but also stimulate the host inflammatory response.
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Affiliation(s)
| | - J. Ries
- Department of Bacteriology, Swedish Institute for Infectious Disease Control, SE-171 82 Solna, Sweden
- Microbiology and Tumorbiology Center, Karolinska Institutet, SE-17182 Stockholm, Sweden
| | - X. Zogaj
- Department of Bacteriology, Swedish Institute for Infectious Disease Control, SE-171 82 Solna, Sweden
| | - C. Hemsley
- Centre for Molecular Microbiology and Infection, Imperial College, London SW7 2AZ, United Kingdom
| | - B. Albiger
- Department of Bacteriology, Swedish Institute for Infectious Disease Control, SE-171 82 Solna, Sweden
| | - A. Kanth
- Department of Bacteriology, Swedish Institute for Infectious Disease Control, SE-171 82 Solna, Sweden
| | - S. Dahlberg
- Department of Bacteriology, Swedish Institute for Infectious Disease Control, SE-171 82 Solna, Sweden
- Microbiology and Tumorbiology Center, Karolinska Institutet, SE-17182 Stockholm, Sweden
| | - J. Fernebro
- Department of Bacteriology, Swedish Institute for Infectious Disease Control, SE-171 82 Solna, Sweden
| | | | | | - K. Hultenby
- Clinical Research Center, Department of Laboratory Medicine, Karolinska Institutet, 141 86 Huddinge, Sweden; and
| | - A. R. Taddei
- **Centro Interdipartimentale di Microscopia Elettronica, University of Tuscia, 01100 Viterbo, Italy
| | - K. Beiter
- Department of Bacteriology, Swedish Institute for Infectious Disease Control, SE-171 82 Solna, Sweden
- Microbiology and Tumorbiology Center, Karolinska Institutet, SE-17182 Stockholm, Sweden
| | - F. Wartha
- Department of Bacteriology, Swedish Institute for Infectious Disease Control, SE-171 82 Solna, Sweden
- Microbiology and Tumorbiology Center, Karolinska Institutet, SE-17182 Stockholm, Sweden
| | - A. von Euler
- Microbiology and Tumorbiology Center, Karolinska Institutet, SE-17182 Stockholm, Sweden
| | | | - D. W. Holden
- Centre for Molecular Microbiology and Infection, Imperial College, London SW7 2AZ, United Kingdom
| | - S. Normark
- Microbiology and Tumorbiology Center, Karolinska Institutet, SE-17182 Stockholm, Sweden
| | - R. Rappuoli
- *Chiron Vaccines, 53100 Siena, Italy
- To whom correspondence may be addressed at:
Chiron Corporation, Via Florentina 1l, Siena, Tuscany 53100, Italy. E-mail:
| | - B. Henriques-Normark
- Department of Bacteriology, Swedish Institute for Infectious Disease Control, SE-171 82 Solna, Sweden
- Microbiology and Tumorbiology Center, Karolinska Institutet, SE-17182 Stockholm, Sweden
- To whom correspondence may be addressed at:
Swedish Institute for Infectious Disease Control/MTC Karolinska Institutet, Nobels väg 18, SE-171 82 Solna, Sweden. E-mail:
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16
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Vairaktaris E, Yapijakis C, Kessler P, Vylliotis A, Ries J, Wiltfang J, Vassiliou S, Derka S, Neukam FW. Methylenetetrahydrofolate reductase polymorphism and minor increase of risk for oral cancer. J Cancer Res Clin Oncol 2005; 132:219-22. [PMID: 16365753 DOI: 10.1007/s00432-005-0065-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2005] [Accepted: 11/25/2005] [Indexed: 12/20/2022]
Abstract
PURPOSE We investigated whether the mutant methylenetetrahydrofolate reductase (MTHFR) increases risk for oral cancer. The common germ-line mutation C677T in the MTHFR gene significantly diminishes specific activity of the enzyme, which is responsible for the circulating form of folate. Folate deficiency is associated with increased risk for thrombosis, as well as for several types of cancer, through disruption of DNA methylation, DNA synthesis and deficient DNA repair. METHODS We searched for the C677T mutation by restriction fragment analysis of PCR products in DNA samples of 110 patients with oral squamous cell carcinoma and 120 healthy controls of comparable ethnicity, age and sex. RESULTS The number of heterozygotes was significantly different in the two groups (P<0.005), as well as in subgroups of patients with or without a positive family history for cancer, compared to normal controls (P<0.01 and P<0.005, respectively). Furthermore, the subgroup of patients with a positive family history for thrombophilia had a significant increase both in the frequencies of mutant alleles (P<0.01) and heterozygotes (P<0.001) in comparison to normal controls. CONCLUSIONS The obtained results suggest that the MTHFR mutation is a minor contributing factor in oncogenesis in the oral region, in conjunction with low dietary uptake of folate.
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Affiliation(s)
- E Vairaktaris
- Department of Maxillofacial Surgery, University of Athens Medical School, Athens, Greece
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17
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Abstract
The Spiron cementless femoral neck prosthesis is based on the idea of proximal force transmission. The concept of osseous anchorages has been proven successful various times. The prosthesis is a conical, self-cutting screw that is inserted without cement into the prepared subcapital implant bearing. It is produced from a corundum blasted titanium-vanadium alloy and is covered with a second-generation calcium phosphate coating. The coating and the form of the thread increase the implant's surface and help to optimize osseointegration. From February 2003 to April 2003, 38 Spiron prostheses were implanted at the DRK hospital in Neuwied (Germany) in 34 patients. Four patients received it for the replacement of both hip joints. The average age of the patients was 60.1 years at the time of the implantation (43-73 years); 20 male and 14 female patients received the prosthesis. We implanted 19 left-sided and 19 right-sided arthroplasties. The preoperative Harris hip score (HHS) was 51 (24-76), n=38. After 1 year, HHS(1) was 94 (86-100), n=20 (of 23 implants). Until now, we have not discovered any prosthesis-specific complications; the rehabilitation time shows a tendency to be shorter than after stem arthroplasty. Revision was necessary in one case because of an early infection. After 3 months, the radiological follow-up examinations showed the development of increasing trabecular reinforcement of the femoral neck and pertrochanteric regions. Until now, there is no evidence of any varus tendency of the Spiron prosthesis.
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Affiliation(s)
- B Birkenhauer
- Klinik für Orthopädie/Rheumaorthopädie, Diakonie-Krankenhaus, Bad Kreuznach.
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18
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Schultze-Mosgau S, Lee BK, Ries J, Amann K, Wiltfang J. In vitro cultured autologous pre-confluent oral keratinocytes for experimental prefabrication of oral mucosa. Int J Oral Maxillofac Surg 2004; 33:476-85. [PMID: 15183412 DOI: 10.1016/j.ijom.2003.12.005] [Citation(s) in RCA: 17] [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] [Accepted: 12/05/2003] [Indexed: 11/19/2022]
Abstract
The reconstruction of large defects after head and neck cancer resection often requires composite tissue transfer to replace a combination of bone, muscle and mucosa. Thus, tissue engineering techniques may be useful for oral mucosal reconstructive surgery to prefabricate mucosal tissue on the muscle flap in vivo, instead of using conventional skin-bearing composite flaps. The aim of this study was to investigate whether autogenous pre-confluent oral keratinocytes (PCOK) cultured in vitro can create mucosal coverage on muscle in vivo, in a single grafting procedure. In 30 Wistar rats, with a small piece of oral mucosa (2 mm x 5 mm), oral keratinocytes were isolated and then seeded on a hydrophilic PTFE membrane (n = 50) in serum-free culture condition. After 48 h, the membrane, together with the PCOK, was transplanted onto the gracilis muscle to fabricate a mucosal flap in vivo. The wound bed was closed primarily until the time of examination. Biopsies were carried out 1, 2, 3, and 4 weeks, respectively, after transplantation and were evaluated immunohistochemically (AE1/AE3 anti-pancytokeratin, cytokeratin 5/6, collagen IV, laminin, lectin-specific labeling of N-acetylglucosamine oligomeres of endothelial cells) with relation to the following criteria: (1) graft acceptance; (2) inflammatory signs; (3) structural changes and keratinocyte lining; (4) expression of basement membrane components; and (5) vascularization. Ninety-one percent of the grafts showed uniform epithelial layers. The mean number of reconstructed epithelial cell layers was 1.7, 2.0, 1.85 and 2.7 at 1, 2, 3 and 4 weeks, respectively after transplantation (P = 0.342). Collagen IV, laminin and lectin-specific capillaries developed between the neoepithelium and the underlying muscular layer. Only two specimens showed signs of infection 2 weeks after transplantation. In conclusion, this experiment demonstrated that PCOK grafts on muscle in vivo can achieve uniform multi-layered oral epithelial coverage in a short period of time. This technique may be a useful alternative tool for oropharyngeal reconstructive surgery and is also worth considering for further clinical studies.
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Affiliation(s)
- S Schultze-Mosgau
- Department of Oral and Maxillofacial Surgery, University of Erlangen-Nuremberg, Erlangen, Germany.
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19
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Donnellan A, Rundle J, Ries J, Fox G, Pierce M, Parker J, Crippen R, DeJong E, Ben Chao, Weijia Kuang, Mcleod D, Matu'ura M, Bloxham J. Illuminating earth's interior through advanced computing. Comput Sci Eng 2004. [DOI: 10.1109/mcise.2004.1255819] [Citation(s) in RCA: 2] [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: 11/08/2022]
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20
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Zabel TA, Ries J, Mahone EM, Demetrides S, Levey E, Kinsman SL. The Kennedy Independence Scales--Spina Bifida Version: a parent report rating scale of adaptive functioning in adolescents with spina bifida. Eur J Pediatr Surg 2003; 13 Suppl 1:S37-9. [PMID: 14986622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- T A Zabel
- Department of Neuropsychology, Kennedy Krieger Institute, Baltimore, MD 21231, USA.
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21
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Gebhart E, Liehr T, Wolff E, Wiltfang J, Koscielny S, Ries J. Loss of 9p21 is embedded in a complex but consistent pattern of genomic imbalances in oral squamous cell carcinomas. Cytogenet Genome Res 2003; 101:106-12. [PMID: 14610349 DOI: 10.1159/000074164] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 07/07/2003] [Accepted: 07/22/2003] [Indexed: 11/19/2022] Open
Abstract
35 oral squamous cell carcinomas examined previously by comparative genomic hybridization (CGH) exhibited 5 up to 47 copy number alterations (CNAs). 13 of those cases showed a loss of parts of the short arm of chromosome 9, band p21 being affected in all of these cases. A highly complex but strikingly consistent pattern of genomic imbalances with an average 31.5 CNAs per tumor was associated with this deletion, and gains clearly dominated over losses of genomic material. Comparable patterns, however, could also be found in tumors with a high number of CNAs (24 CNAs) but without the deletion. Low numbers of imbalances were accompanied by low consistency of the CNA patterns. None of these latter cases showed the deletion 9p21. 66.7% of the dim(9p21)-positive tumors were of class pT4 (vs. 22% in dim(9p21)-negative cases), 77% of stage III or IV (vs. 47% in the group without the deletion), but only 8% of the dim(9p21)-positive tumors were classified as grade 3 (vs. 41% in the negative group). Other clinicopathologic features like prevalence of relapse, or survival time could not be as clearly associated with the deletion. For instance, short relapse-free survival was clearly associated with a high number of CNAs, rather independent of presence or absence of dim(9p21) in the affected tumor. From these findings it is concluded that previously found associations of 9p21 deletion with clinical parameters can reasonably be estimated only in the context of the pattern and complexity of the genomic imbalances accompanying this chromosomal loss in the examined tumors.
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Affiliation(s)
- E Gebhart
- Institute of Human Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
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22
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Park J, Ries J, Gelse K, Kloss F, von der Mark K, Wiltfang J, Neukam FW, Schneider H. Bone regeneration in critical size defects by cell-mediated BMP-2 gene transfer: a comparison of adenoviral vectors and liposomes. Gene Ther 2003; 10:1089-98. [PMID: 12808439 DOI: 10.1038/sj.gt.3301960] [Citation(s) in RCA: 169] [Impact Index Per Article: 8.0] [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: 12/13/2022]
Abstract
Large bone defects resulting from nonunion fractures or tumour resections are common clinical problems. Recent studies have shown bone morphogenetic protein-2 (BMP-2) gene transfer using adenoviral vectors to be a promising new therapeutic approach. However, comparative studies of different vectors are required to identify the optimal system for possible clinical trials. This study compares the use of liposome-mediated and adenoviral gene transfer for the generation of autologous BMP-2-producing bone marrow stromal cells (BMSC). Primary BMSC isolated from the rat femur were treated ex vivo with either an adenovirus or a liposome carrying human BMP-2 cDNA. The genetically modified cells were evaluated in vitro and transplanted into critical size defects in the rat mandible in vivo. BMSC treated with a reporter gene vector or untreated BMSC served as controls. The newly formed tissue was analysed by in situ hybridization, radiography and immunohistochemistry. Both groups of genetically modified cells produced BMP-2 for at least 2 weeks, and markers of new bone matrix such as osteopontin and osteocalcin were observed within 2 weeks following gene transfer. In the liposome group, the critical size defects were found completely healed at 6 weeks after the gene transfer, whereas the more efficient adenoviral gene transfer allowed for complete bone healing within 4 weeks. None of the three control groups showed bone healing, not even after 8 weeks. Thus, both liposome-mediated and adenoviral BMP-2 gene transfer to primary BMSC are suitable methods to achieve the healing of critical size bone defects in rats. As liposomes have proven sufficient for this purpose and offer several advantages over any other vector, such as ease of preparation, theoretically no limitation of the size of the DNA, and less immunological and safety problems, they may represent the best vector system for future clinical trials of bone regeneration by BMP-2 gene therapy.
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Affiliation(s)
- J Park
- Department of Oro-Maxillo-Facial Surgery, University of Erlangen-Nuremberg, Erlangen, Germany
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23
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Petrovic L, Schlegel KA, Ries J, Park J, Diebel E, Schultze-Mosgau S, Wiltfang J. [In vitro effect of taurolidine on squamous cell carcinoma in the oral cavity]. Mund Kiefer Gesichtschir 2003; 7:102-7. [PMID: 12664255 DOI: 10.1007/s10006-003-0452-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Taurolidine (Taurolin) is a derivative of the amino acid taurine, successfully used in the treatment of peritonitis. In vitro and in vivo studies have shown that taurolidine inhibits cell proliferation and induces apoptosis in a variety of tumor cell lines. At present there are no published studies on the use of taurolidine in the treatment of squamous cell carcinoma. Our aim was to examine the inhibition of cell proliferation and induction of apoptosis in cell lines SCC 4 and SCC 15 treated with taurolidine in concentrations of 0.01%, 0.1%, and 0.5%. Analogue to the present investigations on adenocarcinoma cell lines, we used toxic antiseptic povidone iodine in the same concentration as for the reference group. Untreated cells were used as a control group. The cells were incubated with taurolidine or povidone iodine once for 2 h at 37 degrees C in 5% CO(2). Cell proliferation was assessed using WST-1 labeling kit after 3, 24, 48, 72, and 96 h. The additional measurement of cell apoptosis was examined using ELISA(PLUS) cell death detection kit and performed after 0, 24, and 48 h. The findings showed a significant inhibition of cell proliferation and induction of apoptosis in taurolidine-treated cells SCC 4 and SCC 15 in contrast to the reference group treated with povidone iodine or the untreated control group.
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Affiliation(s)
- L Petrovic
- Klinik und Poliklinik für Mund-; Kiefer- und Gesichtschirurgie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Glückstrasse 11, 91054 Erlangen
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24
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Lee BK, Diebel E, Neukam FW, Wiltfang J, Ries J. Diagnostic and prognostic relevance of expression of human telomerase subunits in oral cancer. Int J Oncol 2001; 19:1063-8. [PMID: 11605010 DOI: 10.3892/ijo.19.5.1063] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [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: 11/06/2022] Open
Abstract
Telomerase activity (TA) is associated with most malignant human tumors but is not detected in normal somatic cells with a few exceptions. Three major subunits (hTR, hTP1 and hTERT) of telomerase have been identified. To investigate the clinical implications of the mRNA detection of these components as useful diagnostic and prognostic markers in oral cancer, we examined TA, hTR, hTP1 and hTERT mRNA expressions in 46 oral squamous cell carcinomas (OSCC) and 15 normal oral mucosal tissues from healthy volunteers using a highly sensitive TRAP assay and RT PCR. In all specimens hTR and hTP1 mRNA were detected regardless whether TA was expressed or not. On the contrary, a significant correlation between hTERT expression and TA was shown indicating that the activity of telomerase could be regulated by the extent of hTERT transcription. In addition, hTERT expression showed close association to malignancies. None of the normal mucosal specimens expressed the hTERT subunit, but 76% (35/46) of the tumor specimens did. None of other clinico-pathological and prognostic parameters showed significant relationship with TA or hTERT expression. These results suggest that the detection of hTERT expression may be another useful diagnostic marker, especially for early detection of OSCC, and for distinguishing healthy tissues from neoplastically transformed ones.
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Affiliation(s)
- B K Lee
- Department of Oral and Cranio-Maxillofacial Surgery, University of Erlangen, D-90541 Erlangen, Germany
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25
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Pfeifer V, Nicholson GJ, Ries J, Recktenwald J, Schefer AB, Shawky RM, Schröder J, Wohlleben W, Pelzer S. A polyketide synthase in glycopeptide biosynthesis: the biosynthesis of the non-proteinogenic amino acid (S)-3,5-dihydroxyphenylglycine. J Biol Chem 2001; 276:38370-7. [PMID: 11495926 DOI: 10.1074/jbc.m106580200] [Citation(s) in RCA: 109] [Impact Index Per Article: 4.7] [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: 11/06/2022] Open
Abstract
Balhimycin, a vancomycin-type antibiotic from Amycolatopsis mediterranei, contains the unusual amino acid (S)-3,5-dihydroxyphenylglycine (Dpg), with an acetate-derived carbon backbone. After sequence analysis of the biosynthetic gene cluster, one gene, dpgA, for a predicted polyketide synthase (PKS) was identified, sharing 20-30% identity with plant chalcone synthases. Inactivation of dpgA resulted in loss of balhimycin production, and restoration was achieved by supplementation with 3,5-dihydroxyphenylacetic acid, which is both a possible product of a PKS reaction and a likely precursor of Dpg. Enzyme assays with the protein expressed in Streptomyces lividans showed that this PKS uses only malonyl-CoA as substrate to synthesize 3,5-dihydroxyphenylacetic acid. The PKS gene is organized in an operon-like structure with three downstream genes that are similar to enoyl-CoA-hydratase genes and a dehydrogenase gene. The heterologous co-expression of all four genes led to accumulation of 3,5-dihydroxyphenylglyoxylic acid. Therefore, we now propose a reaction sequence. The final step in the pathway to Dpg is a transamination. A predicted transaminase gene was inactivated, resulting in abolished antibiotic production and accumulation of 3,5-dihydroxyphenylglyoxylic acid. Interestingly, restoration was only possible by simultaneous supplementation with (S)-3,5-dihydroxyphenylglycine and (S)-4-hydroxyphenylglycine, indicating that the transaminase is essential for the formation of both amino acids.
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Affiliation(s)
- V Pfeifer
- Universität Tübingen, Institut für Mikrobiologie and Biotechnologie, Auf der Morgenstelle, Germany
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26
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Price FW, Willes L, Price M, Lyng A, Ries J. A prospective, randomized comparison of the use versus non-use of topical corticosteroids after laser in situ keratomileusis. Ophthalmology 2001; 108:1236-44; discussion 1244-5. [PMID: 11425681 DOI: 10.1016/s0161-6420(01)00624-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [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: 11/21/2022] Open
Abstract
OBJECTIVE To evaluate the benefit and safety of topical corticosteroids after laser in situ keratomileusis (LASIK). DESIGN Prospective, randomized, double-masked clinical trial. PARTICIPANTS A consecutive series of 1747 eyes in 897 patients desiring surgical correction of myopia from plano to -16 diopters (D) with up to 6 D of astigmatism. INTERVENTION Patients were randomly assigned to topical corticosteroids or artificial tears. MAIN OUTCOME MEASURES The primary outcome measure was stability of refraction. Secondary outcome measures were differences in best-corrected visual acuity, decrease in spherical refractive myopia, improvement in uncorrected visual acuity, predictability of achieved corrections versus planned corrections, evaluation of postoperative haze, preservation of best-corrected visual acuity, intraocular pressure, and incidence of complications and adverse events. RESULTS No difference was found between the groups for refractive accuracy, best-corrected or uncorrected visual acuity, or safety. Topical corticosteroids were associated with a prolonged period of refractive regression in moderate to high myopes (-7.25 to -16.00 D) (P = 0.01). Increased haze was noted at the 1 week examination for eyes not receiving topical steroids (P = 0.008); however, in most cases this was clinically insignificant. Thirty-six eyes (2.1%) required supplemental topical corticosteroids unrelated to reoperation. Two eyes received these on the first postoperative day and 15 at the 1-week examination. CONCLUSIONS Topical corticosteroids did not seem to play any beneficial role in routine postoperative treatment after LASIK, and they were associated with decreased stability of refraction in more highly myopic eyes. Eyes that require additional topical corticosteroids are easily identified at either the initial postoperative examinations or during the course of routine postoperative care.
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Affiliation(s)
- F W Price
- Price Vision Group, Indianapolis, Indiana, USA
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27
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Chow KU, Ries J, Weidmann E, Pourebrahim F, Napieralski S, Stieler M, Boehrer S, Rummel MJ, Stein J, Hoelzer D, Mitrou PS. Induction of apoptosis using 2',2' difluorodeoxycytidine (gemcitabine) in combination with antimetabolites or anthracyclines on malignant lymphatic and myeloid cells. Antagonism or synergism depends on incubation schedule and origin of neoplastic cells. Ann Hematol 2000; 79:485-92. [PMID: 11043419 DOI: 10.1007/s002770000181] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [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: 10/27/2022]
Abstract
Induction of apoptosis in vitro using gemcitabine (dFdC) in combination with cladribine (2-CdA) and other cytotoxic drugs on malignant mononuclear cells (MNCs) of patients with acute myeloid leukemia (AML, n=20) and chronic lymphocytic leukemia (CLL, n =20) in myeloid (HL60, HEL) and lymphatic cell lines (HUT78, JURKAT) was investigated using different incubation conditions (simultaneous and consecutive). Furthermore, the influence of dFdC on the level of intracellular metabolites of 2-CdA was studied using high-performance liquid chromatography (HPLC). Apoptosis was evaluated using flow cytometry with 7-aminoactinomycin D. In MNCs of patients with CLL, dFdC + 2-CdA showed an antagonistic effect when applied simultaneously. This antagonism was reduced by consecutive application. The combination of dFdC with doxorubicin was synergistic, independent of incubation schedule. In blasts from newly diagnosed patients with de novo AML, all drug combinations (dFdC+2-CdA, doxorubicin, or cytosine arabinoside) were antagonistic by simultaneous incubation. Reduced antagonism or even synergism was shown (P<0.001) by consecutive incubation. The simultaneous combination of dFdC with 2-CdA in all tested cell lines resulted in a competitive inhibition on the rate of apoptosis. By changing the incubation period to a consecutive schedule, the antagonism was diminished or synergism of apoptosis was measured (P< 0.001). Using similar incubation conditions, these experiments were supported by HPLC measurement of intracellular metabolites of 2-CdA influenced by dFdC application. In conclusion, we demonstrated that the efficacy of dFdC in vitro in combination with other cytotoxic drugs depends on the incubation condition and on the origin of neoplastic cells (lymphatic vs myeloid). The data suggest that simultaneous combination therapy with purine and pyrimidine analogues may not improve the clinical efficacy of one or the other drug administered alone.
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MESH Headings
- Anthracyclines/pharmacology
- Antimetabolites, Antineoplastic/pharmacology
- Apoptosis/drug effects
- Deoxycytidine/analogs & derivatives
- Deoxycytidine/pharmacology
- Drug Therapy, Combination
- HL-60 Cells
- Humans
- Jurkat Cells
- Leukemia, Lymphocytic, Chronic, B-Cell/blood
- Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Lymphatic System/cytology
- Lymphoma/blood
- Lymphoma/drug therapy
- Lymphoma/pathology
- Myeloid Cells/cytology
- Gemcitabine
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Affiliation(s)
- K U Chow
- Department of Internal Medicine III, Hematology/Oncology, Johann Wolfgang Goethe-University Hospital, Frankfurt, Germany
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28
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Gebhardt BR, Ries J, Caspary WF, Boehles H, Stein J. Superoxide: a major factor for stress protein induction in reoxygenation injury in the intestinal cell line Caco-2. Digestion 2000; 60:238-45. [PMID: 10343137 DOI: 10.1159/000007664] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND/AIMS Acute intestinal ischemia is followed by cellular destruction and loss of mucosal barrier function. Posthypoxic injury of cellular proteins leads to the synthesis of heat shock proteins. The role of oxygen radicals in this process, however, is not fully established. METHODS In the present study, using the intestinal cell line Caco-2, we investigated the relationship between the synthesis of the heat shock protein HSP70, detected by Western blot and oxygen radicals as well as lactate dehydrogenase (LDH) release, as measured in photometrical tests. RESULTS Various periods of hypoxia and 30 min of reoxygenation resulted in an increased generation of superoxide as measured by the tetrazolium base 3-(4, 5-dimethylthiazol-2-yl)2,5-diphenyltetrazoliumbromide. The inhibitor of superoxide dismutase (SOD), diethyldithiocarbamate (DDC) increased and addition of SOD decreased intracellular superoxide levels. HSP70 synthesis was detectable after 2 h of hypoxia. Similar to superoxide production, DDC increased and SOD reduced the HSP70 synthesis. In contrast, the increased LDH release from the cells observed after hypoxia was not significantly altered by DDC and SOD. CONCLUSION The production of superoxide correlates with HSP70 induction, but not with LDH release. We conclude that hypoxia/reoxygenation induces heat shock protein production, a result of protein damage, by increased superoxide generation, whereas superoxide does not correlate with membrane damage in Caco-2 cells.
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Affiliation(s)
- B R Gebhardt
- Department of Pediatrics, 2nd Medical Department, Johann Wolfgang Goethe University, Frankfurt, Germany
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Chow KU, Rummel MJ, Weidmann E, Ries J, Jantschke P, Boehrer S, Pourebrahim F, Napieralski S, Stein J, Martin H, Hoelzer D, Mitrou PS. Induction of apoptosis by 2-chloro-2'deoxyadenosine (2-CdA) alone and in combination with other cytotoxic drugs: synergistic effects on normal and neoplastic lymphocytes by addition of doxorubicin and mitoxantrone. Leuk Lymphoma 2000; 36:559-67. [PMID: 10784401 DOI: 10.3109/10428190009148404] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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: 11/13/2022]
Abstract
2-CdA is active as a single agent in the treatment of low-grade lymphomas. We analyzed the induction of apoptosis by 2-CdA alone (n=5) and in combination with other drugs in peripheral lymphocytes from 25 patients with leukemic low-grade lymphomas and from 25 healthy volunteers. 2-CdA was tested in 4 escalating concentrations (0.05 microg/ml to 0.4 microg/ml). Linear regressions showed a dose dependent apoptosis rate of 0.29 x microg 2-CdA/ml + 0.11 (r2=0.88, p=0.006) in normal cells and 0.41 x microg 2-CdA/ml + 0.15 (r2=0.88, p=0.005) in leukemic cells. Intracellular metabolization of 2-CdA into 2-CdA-5'mono-, -di- and the active metabolite -triphosphate was analyzed by HPLC and paralleled the dose dependent increase of apoptosis. The combination of 2-CdA with doxorubicin or mitoxantrone had a synergistic effect on the induction of apoptosis (p<0.001) in both normal and neoplastic lymphocytes, whereas 2-CdA plus etoposide or cytosine arabinoside were only additive. Due to the flat slope of the dose response of 2-CdA concentration on apoptosis we assume that higher in vivo dosages of 2-CdA in the treatment of low-grade lymphomas may not result in a higher clinical efficacy. The synergistic lymphocytotoxic effect of 2-CdA combined with doxorubicin or mitoxantrone may be relevant for new treatment approaches.
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Affiliation(s)
- K U Chow
- Johann Wolfgang Goethe-University Hospital, Department of Medicine III, Hematology/Oncology, Frankfurt, Germany.
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Cooke AH, Chiodini PL, Doherty T, Moody AH, Ries J, Pinder M. Comparison of a parasite lactate dehydrogenase-based immunochromatographic antigen detection assay (OptiMAL) with microscopy for the detection of malaria parasites in human blood samples. Am J Trop Med Hyg 1999; 60:173-6. [PMID: 10072131 DOI: 10.4269/ajtmh.1999.60.173] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.0] [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: 11/07/2022] Open
Abstract
Microscopic examination of blood smears remains the gold standard for malaria diagnosis, but is labor-intensive and requires skilled operators. Rapid dipstick technology provides a potential alternative. A study was conducted in The Gambia to compare the performance of OptiMAL, an immunochromatographic antigen detection assay for the diagnosis of malaria using parasite lactate dehydrogenase, against standard microscopy in patients with suspected malaria. For initial diagnosis of Plasmodium falciparum, irrespective of stage, this assay had a sensitivity of 91.3%, a specificity of 92%, a positive predictive value of 87.2%, and a negative predictive value of 94.7%. The sensitivity of the test decreased markedly at parasitemias < 0.01%. This assay can be used for the diagnosis of malaria in areas where microscopy is not available and for urgent malaria diagnosis at night and at weekends, when routine laboratories are closed and when relatively inexperienced microscopists may be on duty.
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Affiliation(s)
- A H Cooke
- Department of Clinical Parasitology, The Hospital for Tropical Diseases, London, United Kingdom
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31
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Taubald A, Liehr T, Ries J, Girod S, Hassfurter E, Gebhart E. CGH-detected DNA sequence copy number amplifications can be confirmed by interphase-FISH: new possiblities for prognostic approaches in oral squamous cell carcinomas. Int J Mol Med 1998; 2:555-60. [PMID: 9858651 DOI: 10.3892/ijmm.2.5.555] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
In order to control the data obtained by comparative genomic hybridization (CGH) on DNA sequence copy number amplifications, 20 oral squamous cell carcinomas (SCC) were subjected to interphase fluorescence in situ hybridization (I-FISH) examination using specific DNA probes for the oncogenes int2 and erbB-2, and the corresponding centromeric probes of chromosomes 11 and 17. In all cases characterized by distinct peaks of the CGH profile on the critical chromosomal segment 11q13, these data could be clearly substantiated by the I-FISH analyses using the int2 probe and estimating the signal index, the int2/centromer 11 relation, and the fraction of nuclei with high int2 signal numbers. In addition, I-FISH detected smaller cell fractions with high signal numbers (and/or signal clusters) in some tumors which were not definitely conspicuous in CGH. In contrast to int2, erbB-2 amplification apparently does not play a major role in oral SCCs, as the blurred peaks of CGH profiles on chromosome 17ql 1.2-q12 corresponded well with the findings of I-FISH using the erbB-2 probe. Gain of a whole chromosome 17 is apparently a rather common feature of these tumors. In conclusion, the combination of interphase FISH with oncogene-specific probes and CGH is regarded as a valuable means of practical molecular cytogenetic analysis of oral SCCs which could eventually achieve high practical importance in the pathologic analysis of these tumors and in prognosis of their development.
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Affiliation(s)
- A Taubald
- Institute of Human Genetics, University of Erlangen-Nürnberg, Germany
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Girod SC, Pfeiffer P, Ries J, Pape HD. Proliferative activity and loss of function of tumour suppressor genes as 'biomarkers' in diagnosis and prognosis of benign and preneoplastic oral lesions and oral squamous cell carcinoma. Br J Oral Maxillofac Surg 1998; 36:252-60. [PMID: 9762452 DOI: 10.1016/s0266-4356(98)90708-2] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [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: 11/28/2022]
Abstract
Oral cancer is a disease of the elderly and is closely connected with cigarette smoking and alcohol consumption. Since the successful introduction of multidisciplinary treatment, the survival rate has not changed. Because of the high mortality and potentially disfiguring treatment, today's efforts are aimed at eliminating risk factors, chemoprophylaxis, improvement in diagnostic procedures, and understanding of the genetic mechanisms of oral carcinogenesis. Immunohistochemical and molecular biology analysis of biopsy tissue and cell lines of preneoplastic and neoplastic lesions that originate from the oral mucosa have shown that alterations in tumour suppressor genes such as p53 and Rb gene may have an important role in oral carcinogenesis and may be potentially useful prognostic 'biomarkers' in oral carcinogenesis. Statistical analysis of immunohistochemical data from 216 patients did not identify significant or consistent differences of p53, MDM2, or RB expression with respect to stage of disease, malignant transformation, metastatic node involvement, recurrence, or survival. Nevertheless, p53 overexpression seems to correlate strongly with histological progression of the disease, which confirms the importance of p53 alterations in oral carcinogenesis. Overexpression of p53 is usually found in the less differentiated proliferating cells in benign and malignant oral lesions. Assessment of the proliferating activity is possible by immunohistochemical staining with monoclonal antibodies against proliferating nuclear antigen and Ki-67. Statistical analysis shows that overexpression of p53 combined with high proliferative activity predicts a less favourable course of disease in oral squamous cell carcinoma.
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MESH Headings
- Aged
- Biomarkers, Tumor/analysis
- Biomarkers, Tumor/genetics
- Carcinoma, Squamous Cell/diagnosis
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/pathology
- Cell Division
- Cell Transformation, Neoplastic/pathology
- Chemoprevention
- Disease Progression
- Female
- Gene Expression Regulation, Neoplastic
- Genes, Retinoblastoma/genetics
- Genes, Tumor Suppressor/genetics
- Genes, p53/genetics
- Humans
- Immunohistochemistry
- Ki-67 Antigen/analysis
- Leukoplakia, Oral/diagnosis
- Leukoplakia, Oral/genetics
- Leukoplakia, Oral/pathology
- Lichen Planus, Oral/diagnosis
- Lichen Planus, Oral/genetics
- Lichen Planus, Oral/pathology
- Lymphatic Metastasis/pathology
- Male
- Middle Aged
- Mouth Neoplasms/diagnosis
- Mouth Neoplasms/genetics
- Mouth Neoplasms/pathology
- Neoplasm Proteins/analysis
- Neoplasm Recurrence, Local/pathology
- Neoplasm Staging
- Nuclear Proteins
- Precancerous Conditions/diagnosis
- Precancerous Conditions/genetics
- Precancerous Conditions/pathology
- Prognosis
- Proliferating Cell Nuclear Antigen/analysis
- Proto-Oncogene Proteins/analysis
- Proto-Oncogene Proteins c-mdm2
- Retinoblastoma Protein/analysis
- Retrospective Studies
- Risk Factors
- Survival Rate
- Tumor Suppressor Protein p53/analysis
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Affiliation(s)
- S C Girod
- Department of Oral and Maxillofacial Surgery, University of Erlangen, Germany
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33
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Gebhart E, Liehr T, Wolff E, Ries J, Fiedler W, Steininger H, Koscielny S, Girod S. Pattern of genomic imbalances in oral squamous cell carcinomas with and without an increased copy number of 11q13. Int J Oncol 1998; 12:1151-5. [PMID: 9538142 DOI: 10.3892/ijo.12.5.1151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 02/07/2023] Open
Abstract
Among 23 squamous cell carcinomas (SCC) of the oral cavity which were screened for DNA copy number alterations (CNAs) using comparative genomic hybridization, 14 showed a gain of, and 5 of these 14 even an amplification of band 11q13. Amplification of 11q13 was also detected in three of the four studied SCC cell lines and was confirmed by interphase FISH. The number of CNAs in addition to 11q13 varied from 14 to 47 in these carcinomas. All these tumors had seven other specific CNAs in common, i.e. gain on 1p36.3-36.6, 5p15, 9q34, 12p12-13, 14q32, 19 and 20q, all but one showed also an increase of copy number in 7p22, 8q24, 10q26, 12q26, 15q24-25, 16p, 16q23-24, 17q and 22q12-qter. These imbalances were distinctly rarer in the tumors without CNA in 11q13. Loss of material apparently played a minor role in these tumors with gain of 11q13, the most frequent losses (3p12-14 and 5q21) being present in 10 of the 14 cases and loss of 9p13-21 in 5/14 tumors. The three tumors with the highest number of CNAs in addition to 11q13, were histologically classified as pT4, three of the five tumors with 11q13 amplification were highly node-positive (pN 2b-2c). Two of the pT4 tumors shared as many as 23 specific chromosomal segments affected by CNA. Thus, gain of 11q13, though being found at different stages of karyotypic evolution, is apparently associated with a rather specific pattern of other CNAs and involved in progressed stages of malignancy in oral squamous cell carcinoma. In addition, the proportion of patients deceased within one year after diagnosis was clearly higher in the group whose tumors showed an increased 11q13 copy number as compared to the group without this increase. This could point to an association of gain in 11q13 and aggressiveness of the respective tumor.
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Affiliation(s)
- E Gebhart
- Institute of Human Genetics, University of Erlangen-Nürnberg, Schwabachanlage 10, Erlangen, D-91054, Germany
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Wolff E, Girod S, Liehr T, Vorderwülbecke U, Ries J, Steininger H, Gebhart E. Oral squamous cell carcinomas are characterized by a rather uniform pattern of genomic imbalances detected by comparative genomic hybridisation. Oral Oncol 1998; 34:186-90. [PMID: 9692052 DOI: 10.1016/s1368-8375(97)00079-1] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.0] [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: 12/01/2022]
Abstract
Total genomic DNA sampled from 20 oral squamous cell carcinomas (SCCs) and from four SCC cell lines, was examined for genomic imbalances using comparative genomic hybridisation (CGH). Gains and losses of DNA copy number aberrations (CNAs) were found in the primary tumours, but also in the cell lines at a varying number. The patterns of CNAs proved to be rather peculiar in oral SCCs, gains of genetic material clearly dominating compared with losses, and a rather high uniformity of these patterns was an impressive finding. Hypersomies of whole chromosomes, e.g. numbers 17 and 19 or of whole chromosome arms, e.g. 20q, were particularly evident. The segments most frequently gained in oral SCCs were 3q26-q27, 5p15 and 9q34 (16 of 20 tumours each), as well as 1p36.3, 8q24, 10q26, 19 and 20q (15/20 each). Among the 15 tumours with more than 10 CNAs, all showed these imbalances. 11q13 was a band often involved in increases (14/20 tumours), but in several tumours was involved in amplification of DNA copy number. Several other chromosomal segments over represented in more than 60% of the tumours, as, for example, 12q24, 15q22-q24, 16p13.2 and 17q (14/20 tumours each), 6q26-qter, 7p22, 12p12.2-p13, 14q31-q32.2 (13/20) and 1q32-q41, 2q37, 16q23-q24 (12/20 each). In contrast, loss of material affected only a few chromosomal segments, as, for example, 3p12 (12 of the 20 tumours), 5q21 (10/20), 6q13 (8/20). The peculiarities of these findings, in some respect, differ from those found in other epithelial tumours, suggesting a high impact of environmental factors in the generation and progression of these tumours.
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Affiliation(s)
- E Wolff
- Institute of Human Genetics, University of Erlangen-Nürnberg, Germany
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Abstract
The objective was to characterize changes in barrier and transport function in an experimental model of colitis, and to determine whether mast cells contribute to these changes. Colitis was induced in rats with intracolonic 2,4,6-trinitrobenzenesulfonic acid (TNBS, 30 mg) in 50% ethanol. Controls received 0.9% saline or the ethanol vehicle alone. In vivo loop perfusion was used to assess colonic water flux (in microliter.cm-1.h-1) and lumen-to-blood 51Cr-labeled EDTA clearance (% administered dose) after TNBS. Myeloperoxidase (MPO) was used as an index of granulocyte influx. TNBS or its vehicle caused a marked decrease in water absorption and an increase in permeability at 4 h after administration compared with saline. Neither dexamethasone (anti-inflammatory control) nor doxantrazole (mast cell stabilizer) was able to attenuate these early changes likely caused by the vehicle. In contrast, at later times, TNBS (but not its vehicle) also increased 51Cr-EDTA permeability and decreased water absorption; both effects were significantly attenuated by dexamethasone or doxantrazole. These drugs also significantly reduced TNBS-induced MPO accumulation and release of rat mast cell protease II. We conclude that experimental colitis is associated with severe defects in intestinal transport and barrier functions and that mast cells may contribute to the pathogenesis of these changes.
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Affiliation(s)
- J Stein
- Department of Medicine, University of California, School of Medicine, San Diego 92103, USA
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Ries J, Stein J, Traynor-Kaplan AE, Barrett KE. Dual role for AlF4(-)-sensitive G proteins in the function of T84 epithelial cells: transport and barrier effects. Am J Physiol 1997; 272:C794-803. [PMID: 9124513 DOI: 10.1152/ajpcell.1997.272.3.c794] [Citation(s) in RCA: 20] [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] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
T84 monolayers were studied to determine the effect of AlF4, an activator of heterotrimeric G proteins, on Cl-secretion and intestinal barrier function. Basolateral (but not apical) addition of AlF4- increased short-circuit current (I(sc)) and decreased transepithelial resistance. Preincubation with the heavy metal chelator deferoxamine showed that both effects were dependent on Al3+. The effect on I(sc) was abolished by the intracellular Ca2+ chelator 1,2-bis(2-aminophenoxy) ethane-N,N,N',N'-tetraacetic acid or in Cl(-)-free solutions, whereas the decrease in resistance was unaffected. AlF4- also increased intracellular Ca2+, as assessed via fura 2 fluorometry. AlF4- had no effect on adenosine 3',5'-cyclic monophosphate (cAMP) or guanosine 3',5'-cyclic monophosphate (cGMP) levels in T84 cells. The effect of AlF4- on transepithelial resistance was accompanied by a decrease in cellular F-actin as well as increased transepithelial fluxes of the paracellular markers mannitol and inulin. The results indicate that AlF4(-)-sensitive G proteins regulate both epithelial secretory and barrier functions, but via different pathways. AlF4- increases Cl- secretion via a Ca2+-dependent and cAMP- and cGMP-independent mechanism in T84 cells, whereas the decrease in resistance is independent of Ca2+.
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Affiliation(s)
- J Ries
- Department of Medicine, School of Medicine, University of California, San Diego 92103, USA
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Berchtold S, Ries J, Hornung U, Aepinus C. Exchange of functional domains between Rev proteins of HIV-1 and SIVmac239 results in a dominant negative phenotype. Virology 1994; 204:436-41. [PMID: 8091675 DOI: 10.1006/viro.1994.1550] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 01/28/2023]
Abstract
The Rev proteins of primate immunodeficiency viruses are essential transactivators to switch from early to late phase in the viral replication cycle. Surprisingly, the Rev protein of HIV-1 is able to substitute those of HIV-2 and, as shown in here, of SIVmac239, but not vice versa. To understand the underlying mechanism of this incomplete functional reciprocity, we constructed a series of chimeric HIV-1/SIVmac239 Rev proteins and tested for transcomplementation efficacy on Rev-dependent indicator plasmids. In addition, we analyzed the prokaryotically expressed wild type and chimeric proteins for RNA-binding properties in a gel-shift assay in vitro. The functional defect of SIVmac239 on the HIV-1 Rev response element (RRE) is not due to a lack of binding or multimerization. In cotransfection experiments, SIVmac239 Rev and the chimeric proteins were tested for potential inhibitory effects on HIV-1 Rev function using the HIV-1 based indicator plasmid. Some of these proteins turned out to be transdominant inhibitors almost as potent as the HIV-1 Rev mutant M10 which is localized in the activation domain and is one of the strongest transdominant inhibitors. Surprisingly, M10 was not able to inhibit the function of either Rev protein on SIVmac239 RRE, whereas a corresponding SIVmac239 Rev mutant (SIV M10) was a transdominant inhibitor of SIVmac239 Rev function on its homologous RRE.
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Affiliation(s)
- S Berchtold
- Institut für klinische und molekulare Virologie, Universität Erlangen-Nürmberg, Federal Republic of Germany
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Kaszkin M, Kinzel V, Maly K, Bichler I, Lang F, Grunicke HH, Pepperkok R, Jakobi R, Lorenz P, Ansorge W, Pyerin W, Borowski P, Harbers M, Ludwig A, Kischel T, Hilz H, Eckert K, Granetzny A, Fischer J, Grosse R, Manch V, Wehner S, Kornhuber B, Ebener U, Müller-Decker K, Fürstenberger G, Vogt I, Marks F, Graschew G, Küsel A, Hull W, Lorenz W, Thielmann HW, Degen GH, Freyberger A, Müller A, Linscheid M, Hindermeier U, Jorritsma U, Golka K, Föllmann W, Peter H, Bolt HM, Monnerjahn S, Phillips DN, Never A, Seidel A, Glatt AR, Wiench K, Frei E, Schroth P, Wiessler M, Schäfer T, Hergenhahn M, Hecker E, Proft D, Bartholmes P, Bagewadikar RS, Bertram B, Frank N, Leibersperger H, Gschwendt M, Marks F, Fasco S, Plein P, Schiess K, Seidler L, Jacobi T, Besemfelder E, Stephan M, Lehmann WD, Grell M, Thoma B, Scheurich P, Meyer M, Grunicke H, Jaques G, Wegmann B, Ravemann K, Popanda O, Thielmann HW, Voss H, Wirkner U, Werner D, Strand D, Kalmes A, Walther HP, Mechler B, Schirrmacher SV, Kinzel V, Hess R, Hanagarth HG, Hässler C, Brandner G, Ertel C, Gückel B, Schirrmacher V, Kyewski BA, Bogdahn U, Jachimczak P, Schneider J, Brysch W, Schlingensiepen W, Drenkard D, Behl C, Winkler J, Apfel R, Meixensberger J, Stulle K, Marquardt P, Vollmers HP, Müller J, Müller-Hermelink HK, Schuermann M, Seemann G, Ptok A, Ptok M, Carey TE, Steffen M, Nitz UC, Everding B, Hölzel F, Kantwerk-Funke G, Boll G, Zänker KS, Everding B, Steffen M, Hölzel P, Heymanns J, Hennig C, Rotsch M, Havemann K, Fischer JR, Stehr S, Lahm H, Drings P, Krammer PH, Kirsch M, Strubel A, Kist A, Hinn R, Fischer H, Buttler A, Schackert G, Friedenauer S, Lindner D, Marczynski B, Karcls H, Goergens HW, Epe B, Müller E, Schütze D, Boiteux S, Eder E, Deininger C, Hoffman C, Scherer E, Vermeulen E, van Kranen HJ, Bax J, Woutersen RA, van Kreijl CF, Schurich B, Hagedorn H, Kamp E, Eisenbrand G, Spiegelhalder B, Bolm-Audorff U, Bienfait HG, Preussmann R, Wacker CD, Preussmann R, Kehl H, Spiegelhalder B, Akkan Z, Ries J, Meger M, Shephard SE, Gunz D, Lutz WK, Tricker AR, Kurnar R, Siddiqi M, Mende P, Pfundstein B, Scholl A, Janzowski C, Jacob D, Goelzer P, Henn I, Zankl H, Zimlich KH, Gansewendt B, Thier R, Schroeder KR, Hallier E, Moeckel G, Heiden W, Waldherr-Teschner M, Brickmann J, Roeser H, Krauter G, Scherer G, Krätschmer A, Hauenstein H, Adlkofer F, Fernando RC, Schmeiser HH, Nicklas W, Pfau W, Phillips DH, Scheckenbach S, Cantoreggi S, Leutbecher M, Ottenwälder H, Föst U, Baumgart PM, Kliem HC, Data S, Pfeiffer C, Fuchs A, Schmezer P, Kuchenmeister F, Pool-Zober BL, Liegibel UM, Pool-Zobel BL, Steeb L, Friesel H, Schneider T, Scherf HR, Buchmann A, Bauer-Hofmann R, Mahr J, Schwarz M, Schmidt R, Rippmann F, Steinbauer B, Zlfu P, Bunk B, Hefter W, Klinga K, Berger MR, Robertson LW, Luebeck G, Moolgavkar S, Torsten U, Kowalczyk-Wagner M, Weitzel H, Zechel C, Peters H, Anders F, Ambs S, Kirchner T, Neumann HG, Einig C, Eigenbrodt E, Oesterle D, Deml E, Weisse G, Gerbracht U, Stumpf H, Filsingcr E, Bannasch P, Muster W, Cikryt P, Münzel P, Röhrdanz E, Bock KW, Lipp HP, Wiesmüller T, Hagenmaier H, Schrenk D, Karger A, Bauer G, Höfler P, Götschl M, Viesel E, Jürgensmeier J, Schaefer D, Picht G, Kiefer J, Krieg P, Schnapke R, Feil S, Wagner E, Schleenbecker U, Anders A, Gross MM, Unger S, Stanbridge EJ, Boukamp P, Pascheberg U, Fusenig NE, Abken H, Weidle UH, Grummt F, Willecke K, Schäfer R, Hajnal A, Balmer I, Klemenz R, Goretzki PE, Reishaus H, Demeure M, Haubruck H, Lyons J, Röher HD, Trouliaris S, Hadwiger-Fangmeier A, Simon E, Niemann H, Tamura T, Westphal G, Turner E, Karels H, Blaszkewicz M, Stopper H, Schiffmann D, De Boni U, Schuler M, Schnitzler R, Metzler M, Pfeiffer E, Aulenbacher R, Langhof T, Schröder KR, Saal K, Müller-Hermelink HK, Henn W, Seitz G, Lagoda P, Christmann A, Blin N, Welter C, Adam D, Fömzler D, Winkler C, Mäueler W, Schartl M, Theisinger B, Schüder G, Rüther U, Nunnensiek C, Müller HAG, Rupp W, Lüthgens M, Jipp P, Kinzler I, Gulich M, Seidel HJ, Clark OH, McCormick F, Bourne HR, Gieseler F, Boege F, Biersack H, Spohn B, Clark M, Wilms K, Boege F, Gieseler F, Biersack H, Clark M, Wllms K, Polack A, Strobl L, Feederle R, Schweizer M, Eick D, Bornkamm GW, Kopun M, Scherthan H, Granzow C, Janiaud P, Rueß D, Mechler BM, Strauss PG, Erfle V, Fritsche M, Haessler C, Christiansen H, Schestag J, Christiansen NM, Lampert F, Schulz WA, Hasse A, Sies H, Orend G, Kuhlmann I, Doerfler W, Behn-Krappa A, Hölker I, Sandaradura de Silva U, Smola U, Hennig D, Hadviger-Fangmeier A, Schütz B, Kerler R, Rabes HM, Dölken G, Fauser AA, Kerkert R, Ragoczy U, Fritzen R, Lange W, Finke J, Nowicki B, Schalipp E, Siegert W, Mertelsmann R, Schilling U, Sinn HJ, Maier-Borst W, Friedrich EA, Löhde E, Lück M, Raude H, Schlicker H, Barzen G, Kraas E, Milleck J, Keymer R, Störkel S, Reichert T, Steinbach F, Lippold R, Thoenes W, Wagner W, Reiffen KA, Bardosi A, Brkovic D, Gabius HJ, Brandt B, Jackisch C, Seitzer D, Hillebrand M, Habermann FA, Rabes HM, Zeindl-Eberhart, Evelyn, Robl C, Röttgen V, Nowak C, Richter-Reichhelm HB, Waldmann V, Suchy B, Zietz C, Sarafoff M, Ostermayr R, Rabes HM, Lorenz J, Friedberg T, Paulus W, Ferlinz R, Oesch F, Jähde E, Glüsenkamp KH, Tietze LF, Rajewsky MF, Chen G, Hutter KJ, Bullerdiek J, Zeller WJ, Schirner M, Schneider MR, Zbu P, Gebelein M, Naser-Hijazi B, Hynes NE, Reinhardt M, Heyl P, Schmähl D, Presek P, Liebenhoff U, Findik D, Hartmann GH, Fischer H, Kliesch C, Schackert G, Albert F, Kunze S, Wannnenmacher M, Boese-Landgraf J, Lorenz E, Albrecht D, Dulce M, Aigner KR, Thiem N, Müller H, Leonardi M, Bogdahn U, Justh A, Drenkard D, Lutz M, Apfel R, Behl C, Lang E, Lieth CWVD, Sinn H, Betsch BR, Hengstler JG, Fuchs J, Oesch F, Busch FJ, Cato ABC, Schied G, Tang W, Bogdahn U, Richter B, Schaefer C, Kelleher DK, Vaupel P, Mundt D, Bartsch HH, Meden H, Meyer M, Vehmeyer K, Mull R, Kuhn W, Hoffmann S, Berger D, Fiebig H, Moog C, Luu B, Frühauf S, Keppler BK, Galeano A, Valenzuela-Paz P, Klenner T, Stadler H, Golomb G, Breuer E, Voegeli R, Hilgard P, Nowrousian HR, Aulenbacher P, Winterhalter B, Granson C, Stöhr M, Ponstingl H, Granzow C, Drings P, Osswald H, Sobottka SB, Amtmann E, Sauer G, Hornung B, Volland S, Kahl S, Gerspach R, Matz B, Schmidt J, Lipp M, Brehm G, Luz A, Rüther U, Wendel S, Strauß PG, Erflte V, Greehmann S, Zobel A, Kalkbrenner F, Vorbrüggen G, Moelling K, Iftner T, Müller AH, Fuchs PG, Pfister H, Cichutek K, Treinies I, Lang M, Braun C, Denner J, Norley S, Kurth R, Music L, Wiestler OD, Aguzzi A, von Deimling A, Schneemann M, Elbl R, Kleihues P, Land H, Hohn HP, Höök M, Denker HW, Kemmner W, Zaar K, Jones PA, Kath R, Herlyn M, Maier P, Schawalder HP, Elsner J, Parzefall W, Erber E, Sedivy R, Schulte-Hermann R, Hemmer J, Tomakidi P, Boukamp P, Breitkreutz D, Fusenig NE, Kallinowski F, Strauss W, Brownell AL, Bassukas ID, Vester G, Maurer-Schultze B, Langbein L, Kosmehl H, Katenkamp D, Spiess E, Trefz G, Ebert W, Jordan P, Kübler D, Lichtner RB, Wiedemuth M, Kittmann A, Ullrich A, Khazaie K, Kowitz A, Kadmon G, Altevogt P, Frixen UH, Behrens J, Schipper J, Sachs M, Birchmeier H, Hackenberg R, Hawighorst T, Hofmann J, Beato H, Schulz KD, Erbil C, Maasberg M, Kunz LA, Simm A, Adam G, Mueller-Klieser W, Kaufmann AM, Stoeck M, Hülsen A, Boukamp P, Game S, Donnelly M, Fusenig NE, Stark HJ, Schlingensiepen KH, Kurzik-Dumke U, Phannavong B, Gundacker D, Gateff E, Gabius S, Joshi SS, Franz H, John NJ, Grümmer R, Denker HW, Gross MW, Karbach U. Absract. J Cancer Res Clin Oncol 1991. [DOI: 10.1007/bf01625409] [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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Makler MT, Ries LK, Ries J, Horton RJ, Hinrichs DJ. Detection of Plasmodium falciparum infection with the fluorescent dye, benzothiocarboxypurine. Am J Trop Med Hyg 1991; 44:11-6. [PMID: 1996734 DOI: 10.4269/ajtmh.1991.44.11] [Citation(s) in RCA: 29] [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: 12/29/2022] Open
Abstract
The fluorescent dye benzothiocarboxypurine (BCP) intensely stains nucleic acids. The dye does not penetrate viable white blood cells but does stain these cells following fixation. It has also been found that the dye stains the nucleic acid of viable Plasmodium falciparum. We have subsequently evaluated the staining of P. falciparum by benzothiocarboxypurine within red blood cells and have found that the red blood cell membrane is freely permeable to this dye and consequently P. falciparum is stained within the red blood cell. This finding prompted an in-depth analysis of the dye in the laboratory and in a field study as an alternative to Giemsa-stained blood smears and as a means of enhancing the microscopic diagnosis of malarial infection. In a field study the BCP dye allowed detection of malaria in fresh blood at a level equivalent to the Giemsa method (parasitemia ranged from 0.01% to 30%). The BCP staining procedure could also be used with fixed specimens although the differential staining characteristics were lost following specimen preparation. Of 111 blinded samples obtained in the field 22 were negative by Giemsa-stained thin smear, 16 were negative on thick smear and the same 16 were negative by BCP analysis. We have found that the BCP dye offers many advantages compared with the microscopic diagnosis of P. falciparum infection with standard Giemsa stains. These advantages are especially evident in conditions of low parasitemia, in the speed of staining and evaluation, and the relatively low level of training required to provide consistent results.
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Affiliation(s)
- M T Makler
- Veterans Administration Medical Center, Portland, Oregon
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Christman NJ, McConnell EA, Pfeiffer C, Webster KK, Schmitt M, Ries J. Uncertainty, coping, and distress following myocardial infarction: transition from hospital to home. Res Nurs Health 1988; 11:71-82. [PMID: 3363177 DOI: 10.1002/nur.4770110203] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The purpose of this study was to examine the influence of uncertainty in illness and use of coping methods on emotional distress and recovery following myocardial infarction. A longitudinal exploratory design with measures obtained at three times was used; multiple regression was used to analyze the data. Uncertainty explained a significant amount of the variance in emotional distress prior to hospital discharge (21%), and 1 (16%) and 4 (26%) weeks after discharge. Patients reporting greater uncertainty also reported more emotional distress. One week after discharge, coping behaviors significantly added to the variance explained in distress (27%). Greater use of emotive coping behaviors was associated with higher levels of emotional distress and accounted for the majority of the variance explained by coping behaviors (23%). The findings are discussed in terms of the nature of uncertainty in health care and future model development.
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Affiliation(s)
- N J Christman
- College of Nursing, University of Kentucky, Lexington 40536-0232
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Ries J. [The relevance of radiotherapy for the treatment of the carcinoma of the female genitalia. Indications--results (author's transl)]. Ther Umsch 1979; 36:546-53. [PMID: 462410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Ries J. [Lesions after the radiotherapie of the carcinoma of the female genitalia (author's transl)]. Ther Umsch 1979; 36:554-8. [PMID: 462411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Zander J, Ries J. [In memory of Professor Walter Rech, M.D]. MMW Munch Med Wochenschr 1976; 118:479. [PMID: 817188] [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: 12/24/2022]
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Ries J. [Radiotherapy in gynecology]. Z Allgemeinmed 1972; 48:1540-9. [PMID: 4649284] [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: 01/11/2023]
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Ries J, Ludwig H, Appel W. [Anticoagulants in the radiotherapy of genital carcinomas in women. I. Squamous cell carcinoma]. Med Welt 1968; 38:2042-7. [PMID: 5712898] [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: 01/16/2023]
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Ries J. [On the development of gynecological radiotherapy; 50 years of experiences in the 1st Women's Hospital of Munich University]. Munch Med Wochenschr 1967; 109:3-9. [PMID: 5340254] [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: 01/14/2023]
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