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Laytragoon Lewin N, Oliva D, Nilsson M, Andersson BÅ, Löfgren S, Lewin F. Survival Time among Young and Old Breast Cancer Patients in Relation to Circulating Blood-Based Biomarkers, Acute Radiation Skin Reactions, and Tumour Recurrence. Oncology 2021; 99:740-746. [PMID: 34515174 DOI: 10.1159/000518184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/24/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION It has been suggested that age could influence the treatment-induced side effects and survival time of cancer patients. The influence of age on blood-based biomarkers, acute radiation skin reactions (ARSRs), and survival time of breast cancer patients was analysed. MATERIALS AND METHODS Two hundred ninety-three individuals, 119 breast cancer patients, and 174 healthy blood donors were included. RESULTS Before radiotherapy (RT), decreased levels of lymphocytes, interleukin 2, platelet-derived growth factors, and tumour necrosis factor but increased levels of monocyte-to-lymphocyte ratio, neutrophil-to-lymphocyte ratio, C-reactive protein, and macrophage inflammatory protein 1b (MIP1b) were detected in the patient group. All of the patients developed ARSRs and intensity of ARSRs was inversely related to the MIP1b level before RT. Fifteen out of 119 (13%) patients deceased during follow-up time. No influence of age (≤50 compared to >50 years) on survival time was detected (p = 0.442). Tumour recurrence, found in 11 out of 119 (9%) patients, had impact on survival time of these patients (p < 0.001). CONCLUSIONS The level of circulating MIP1b before RT was associated with intensity of ARSRs. Tumour recurrence, but not age, was associated with poor survival time. Analysis of circulating MIP1b was low cost, rapid, and could be done in routine laboratory facility. Since RT almost always induces ARSRs, the possibility of using MIP1b as a prognostic biomarker for ARSRs is of interests for further investigation.
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Affiliation(s)
- Nongnit Laytragoon Lewin
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden, .,Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden,
| | - Delmy Oliva
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden.,Department of Oncology, Ryhov Hospital, Jönköping, Sweden
| | - Mats Nilsson
- Futurum, Academy of Health and Care, Jönköping, Sweden.,Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Bengt-Åke Andersson
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden.,Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Sture Löfgren
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden
| | - Freddi Lewin
- Department of Oncology, Ryhov Hospital, Jönköping, Sweden
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Bai X, Zhang J, Hua Y, Jernberg C, Xiong Y, French N, Löfgren S, Hedenström I, Ambikan A, Mernelius S, Matussek A. Genomic Insights Into Clinical Shiga Toxin-Producing Escherichia coli Strains: A 15-Year Period Survey in Jönköping, Sweden. Front Microbiol 2021; 12:627861. [PMID: 33613494 PMCID: PMC7893091 DOI: 10.3389/fmicb.2021.627861] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 01/05/2021] [Indexed: 11/13/2022] Open
Abstract
Shiga toxin-producing Escherichia coli (STEC) are important foodborne pathogens that can cause human infections ranging from asymptomatic carriage to bloody diarrhea (BD) and fatal hemolytic uremic syndrome (HUS). However, the molecular mechanism of STEC pathogenesis is not entirely known. Here, we demonstrated a large scale of molecular epidemiology and in-depth genomic study of clinical STEC isolates utilizing clinical and epidemiological data collected in Region Jönköping County, Sweden, over a 15-year period. Out of 184 STEC isolates recovered from distinct patients, 55 were from patients with BD, and 129 were from individuals with non-bloody stools (NBS). Five individuals developed HUS. Adults were more associated with BD. Serotypes O157:H7, O26:H11, O103:H2, O121:H19, and O104:H4 were more often associated with BD. The presence of Shiga toxin-encoding gene subtypes stx 2a, stx 2a + stx 2c, and stx 1a + stx 2c was associated with BD, while stx 1 a was associated with milder disease. Multiplex virulence and accessory genes were correlated with BD; these genes encode toxins, adhesion, autotransporters, invasion, and secretion system. A number of antimicrobial resistance (AMR) genes, such as aminoglycoside, aminocoumarin, macrolide, and fluoroquinolone resistance genes, were prevalent among clinical STEC isolates. Whole-genome phylogeny revealed that O157 and non-O157 STEC isolates evolved from distinct lineages with a few exceptions. Isolates from BD showed more tendency to cluster closely. In conclusion, this study unravels molecular trait of clinical STEC strains and identifies genetic factors associated with severe clinical outcomes, which could contribute to management of STEC infections and disease progression if confirmed by further functional validation.
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Affiliation(s)
- Xiangning Bai
- Division of Infectious Diseases, Department of Medicine Huddinge, Karolinska Institutet, Huddinge, Sweden
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Ji Zhang
- EpiLab, School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Ying Hua
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Huddinge, Sweden
- Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou, China
| | | | - Yanwen Xiong
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Nigel French
- New Zealand Food Safety Science and Research Centre, School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Sture Löfgren
- Laboratory Medicine, Jönköping Region County, Department of Clinical and Experimental Medicine, Linköping University, Jönköping, Sweden
| | | | - Anoop Ambikan
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Sara Mernelius
- Laboratory Medicine, Jönköping Region County, Department of Clinical and Experimental Medicine, Linköping University, Jönköping, Sweden
| | - Andreas Matussek
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Huddinge, Sweden
- Laboratory Medicine, Jönköping Region County, Department of Clinical and Experimental Medicine, Linköping University, Jönköping, Sweden
- Division of Laboratory Medicine, Oslo University Hospital, Oslo, Norway
- Division of Laboratory Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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Laytragoon Lewin N, Karlsson JE, Robinsson D, Fagerberg M, Kentsson M, Sayardoust S, Nilsson M, Shamoun L, Andersson BÅ, Löfgren S, Rutqvist LE, Lewin F. Influence of single nucleotide polymorphisms among cigarette smoking and non-smoking patients with coronary artery disease, urinary bladder cancer and lung cancer. PLoS One 2021; 16:e0243084. [PMID: 33507988 PMCID: PMC7842923 DOI: 10.1371/journal.pone.0243084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 11/13/2020] [Indexed: 11/21/2022] Open
Abstract
Introduction Cigarette smoke is suggested to be a risk factor for coronary artery disease (CAD), urinary bladder cancer (UBCa) or lung cancer (LCa). However, not all heavy smokers develop these diseases and elevated cancer risk among first-degree relatives suggests an important role of genetic factor. Methods Three hundred and ten healthy blood donors (controls), 98 CAD, 74 UBCa and 38 LCa patients were included in this pilot study. The influence of 92 single nucleotide polymorphisms (SNPs) and impact of cigarette smoking were analysed. Results Out of 92 SNPs tested, differences in distribution of 14 SNPs were detected between controls and patient groups. Only CTLA4 rs3087243 showed difference in both CAD and UBCa patient group compared to control group. Stratified by smoking status, the impact of smoking was associated to frequencies of 8, 3 and 4 SNPs in CAD, UBCa, LCa patients, respectively. None of these 92 SNPs showed a statistically significant difference to more than one type of disease among smoking patients. In non-smoking patients, 7, 3 and 6 SNPs were associated to CAD, UBCa, LCa, respectively. Out of these 92 SNPs, CTLA4 rs3087243 was associated to both non-smoking CAD and UBCa. The XRCC1 rs25487 was associated to both non-smoking UBCa and LCa. Conclusion SNPs might be important risk factors for CAD, UBCa and LCa. Distribution of the SNPs was specific for each patient group, not a random event. Impact of cigarette smoking on the disease was associated to the specific SNP sequences. Thus, smoking individuals with SNPs associated to risk of these serious diseases is an important target group for smoking cessation programs.
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Affiliation(s)
| | - Jan-Erik Karlsson
- Dept of Internal Medicine, Ryhov Hospital, Jönköping, Sweden
- Dept of Health Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | | | | | - Magnus Kentsson
- Dept of Internal Medicine, Ryhov Hospital, Jönköping, Sweden
| | | | - Mats Nilsson
- Futurum, Academy of Health and Care, Region Jönköping, Jönköping, Sweden
- Dept Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Levar Shamoun
- Dept Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden
| | | | - Sture Löfgren
- Dept Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden
| | | | - Freddi Lewin
- Dept Oncology, Ryhov Hospital, Jönköping, Sweden
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Lewin NL, Luetragoon T, Shamoun L, Oliva D, Andersson BÅ, Löfgren S, Rutqvist LE, Lewin F. The Influence of Adjuvant Radiotherapy and Single Nucleotide Polymorphisms on Circulating Immune Response Cell Numbers and Phenotypes of Patients With Breast Cancer. Anticancer Res 2019; 39:4957-4963. [PMID: 31519601 DOI: 10.21873/anticanres.13684] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 07/22/2019] [Accepted: 07/23/2019] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Adjuvant radiotherapy (RT) damages multiple layers of skin, muscle, blood vessels and blood cells that are included within the RT area. Indirect, bystander systemic effects could also develop in cells not directly hit by radiation. MATERIALS AND METHODS Ninety-three female patients recovering from breast cancer surgery and 82 female healthy blood donors were analyzed. For identification of systemic adaptive and innate immune response, rapid and low-cost blood-based biomarkers were assayed. RESULTS Post-operated breast cancer patients had a decreased number of circulating adaptive immune response cells but increased number of circulating immunosuppressive myeloid subpopulations. RT decreased the number of T-cells and platelets without influencing the number of immunosuppressive myeloid subpopulations. Alterations in the number and phenotypes of T-cell subpopulations were associated with SNPs. CONCLUSION The combination of RT and immunotherapy might provide optimal treatment for cancer patients.
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Affiliation(s)
- Nongnit Laytragoon Lewin
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden .,Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Thitiya Luetragoon
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden.,Department of Medical Technology, Naresuan University, Phitsanulok, Thailand
| | - Levar Shamoun
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden
| | - Delmy Oliva
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.,Department of Oncology, Ryhov Hospital, Jönköping, Sweden
| | - Bengt-Åke Andersson
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden.,Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Sture Löfgren
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden
| | | | - Freddi Lewin
- Department of Oncology, Ryhov Hospital, Jönköping, Sweden
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Andersson BÅ, Löfgren S, Lewin F, Nilsson M, Laytragoon-Lewin N. Impact of Cigarette Smoking and Head and Neck Squamous Cell Carcinoma on Circulating Inflammatory Biomarkers. Oncology 2019; 98:42-47. [PMID: 31437849 DOI: 10.1159/000502651] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 08/12/2019] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Smoking induces inflammation and an immune response. A cancer-related inflammatory response has been seen in smoking and nonsmoking head and neck squamous cell carcinoma (HNSCC) patients. OBJECTIVES The aim of this study was to analyze the possible separated effects of smoking or HNSCC on 18 inflammatory or immune regulatory biomarkers. METHODS Fifty-one nonsmoking and 36 smoking pretreated HNSCC patients and 101 nonsmoking and 39 smoking controls were included in this study. The levels of 18 inflammatory or immune regulatory biomarkers were analyzed. A multivariable linear regression model was used to predict the impact of smoking and HNSCC on the levels of the biomarkers. RESULTS Smoking had the highest impact on total WBC, IFN-γ, and MCP-1 levels. The highest impact of HNSCC was found on neutrophils, neutrophil-to-lymphocyte ratio, HsCRP, MIP-1b, and TNF-α levels. CONCLUSION IdentifyingHNSCC or smoking-related inflammatory biomarkers might contribute to the understanding of the immune response in HNSCC patients. This study could provide information of inflammatory biomarkers in HNSCC patients.
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Affiliation(s)
- Bengt-Åke Andersson
- Department of Laboratory Medicine, Region Jönköping County, and Department of Medical and Health Sciences, Linköping University, Linköping, Sweden, .,Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden,
| | - Sture Löfgren
- Department of Laboratory Medicine, Region Jönköping County, and Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Freddi Lewin
- Department of Oncology, Jönköping, Region Jönköping County, and Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Mats Nilsson
- Futurum, Academy for Health and Care, Jönköping, Sweden.,Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Nongnit Laytragoon-Lewin
- Department of Laboratory Medicine, Region Jönköping County, and Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.,Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
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6
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Gustavsson R, Mandenius CF, Löfgren S, Scheper T, Lindner P. In situ microscopy as online tool for detecting microbial contaminations in cell culture. J Biotechnol 2019; 296:53-60. [PMID: 30898686 DOI: 10.1016/j.jbiotec.2019.03.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 03/14/2019] [Accepted: 03/15/2019] [Indexed: 11/25/2022]
Abstract
Microbial contamination in mammalian cell cultures causing rejected batches is costly and highly unwanted. Most methods for detecting a contamination are time-consuming and require extensive off-line sampling. To circumvent these efforts and provide a more convenient alternative, we used an online in situ microscope to estimate the cell diameter of the cellular species in the culture to distinguish mammalian cells from microbial cells depending on their size. A warning system was set up to alert the operator if microbial cells were present in the culture. Hybridoma cells were cultured and infected with either Candida utilis or Pichia stipitis as contaminant. The warning system could successfully detect the introduced contamination and alert the operator. The results suggest that in situ microscopy could be used as an efficient online tool for early detection of contaminations in cell cultures.
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Affiliation(s)
- R Gustavsson
- Division of Biotechnology, Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden
| | - C F Mandenius
- Division of Biotechnology, Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden.
| | - S Löfgren
- Division of Biotechnology, Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden
| | - T Scheper
- Institute of Technical Chemistry, Leibniz University Hannover, 30167, Hanover, Germany
| | - P Lindner
- Institute of Technical Chemistry, Leibniz University Hannover, 30167, Hanover, Germany
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7
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Lewin NL, Luetragoon T, Andersson BÅ, Oliva D, Nilsson M, Strandeus M, Löfgren S, Rutqvist LE, Lewin F. The Influence of Single Nucleotide Polymorphisms and Adjuvant Radiotherapy on Systemic Inflammatory Proteins, Chemokines and Cytokines of Patients With Breast Cancer. Anticancer Res 2019; 39:1287-1292. [PMID: 30842160 DOI: 10.21873/anticanres.13240] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 02/11/2019] [Accepted: 02/14/2019] [Indexed: 11/10/2022]
Abstract
Independently of tumour and treatment modulation, the host immune response status plays an important role in the clinical outcome of patients with cancer. The influence of single nucleotide polymorphisms (SNPs) and adjuvant radiotherapy (RT) on the systemic immune response status of patients with breast cancer was investigated. MATERIALS AND METHODS Eighty-six female patients recovering from breast cancer surgery were investigated. As a control cohort, 82 healthy female blood donors were used. Blood-based SNPs, plasma C-reactive protein (CRP), cytokines and chemokines were analyzed for this purpose. RESULTS Independently of tumour stage and hormone receptor status, dysregulation of plasma CRP, chemokine (C-C motif) ligand 4 (CCL4) and interleukin 2 (IL2), but not CCL5, CCL2, platelet-derived growth factor, IL6, IL10, IL12, interferon-gamma or tumour necrosis factor alpha were detected in the patients when compared to controls. The extent of alteration in plasma levels of CRP and IL2 patients was significantly associated with SNPs in CRP rs1800947 and IL2 rs6822844, respectively. These SNPs had no influence on the levels of corresponding plasma biomarkers in the healthy controls. Adjuvant RT reduced plasma CRP and CCL5 levels in patients with regards to CRP rs1800947CC, CCL5 rs2107538GG and CCL5 rs2280789AA sequences. CONCLUSION Dysregulation of immune responses, as indicated by plasma levels of CRP, CCL4 and IL2 were found in patients with breast cancer despite the removal of the tumour mass. The benefit of adjuvant RT, as indicated by reduced plasma amounts of inflammatory protein CRP and chemokine CCL5 were based on the SNPs of the patients. Analyses of blood-based SNPs, plasma CRP, IL2 and CCL5 are low cost, rapid and can be carried out using general laboratory facilities while requiring only a peripheral blood sample. The possibility of using these blood-based biomarkers as an indicator of patient immune status for selection of individual patient treatment warrants further investigation.
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Affiliation(s)
- Nongnit Laytragoon Lewin
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden .,Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Thitiya Luetragoon
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden.,Department of Medical Technology, Naresuan University, Phitsanulok, Thailand
| | - Bengt-Åke Andersson
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden.,Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Delmy Oliva
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.,Department of Oncology, Ryhov Hospital, Jönköping, Sweden
| | | | | | - Sture Löfgren
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden
| | | | - Freddi Lewin
- Department of Oncology, Ryhov Hospital, Jönköping, Sweden
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8
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Andersson BÅ, Sayardoust S, Löfgren S, Rutqvist LE, Laytragoon-Lewin N. Cigarette smoking affects microRNAs and inflammatory biomarkers in healthy individuals and an association to single nucleotide polymorphisms is indicated. Biomarkers 2018; 24:180-185. [DOI: 10.1080/1354750x.2018.1539764] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Bengt-Åke Andersson
- Department of Laboratory Medicine, Ryhov County Hospital, Jönköping, Sweden
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Shariel Sayardoust
- Department of Periodontology, Institute for Postgraduate Dental Education, Jönköping, Sweden
| | - Sture Löfgren
- Department of Laboratory Medicine, Ryhov County Hospital, Jönköping, Sweden
| | | | - Nongnit Laytragoon-Lewin
- Department of Laboratory Medicine, Ryhov County Hospital, Jönköping, Sweden
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
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9
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Bai X, Mernelius S, Jernberg C, Einemo IM, Monecke S, Ehricht R, Löfgren S, Matussek A. Shiga Toxin-Producing Escherichia coli Infection in Jönköping County, Sweden: Occurrence and Molecular Characteristics in Correlation With Clinical Symptoms and Duration of stx Shedding. Front Cell Infect Microbiol 2018; 8:125. [PMID: 29765909 PMCID: PMC5939558 DOI: 10.3389/fcimb.2018.00125] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 04/13/2018] [Indexed: 11/13/2022] Open
Abstract
Shiga toxin-producing Escherichia coli (STEC) cause bloody diarrhea (BD), hemorrhagic colitis (HC), and even hemolytic uremic syndrome (HUS). In Nordic countries, STEC are widely spread and usually associated with gastrointestinal symptoms and HUS. The objective of this study was to investigate the occurrence of STEC in Swedish patients over 10 years of age from 2003 through 2015, and to analyze the correlation of critical STEC virulence factors with clinical symptoms and duration of stx shedding. Diarrheal stool samples were screened for presence of stx by real-time PCR. All STEC isolates were characterized by DNA microarray assay and PCR to determine serogenotypes, stx subtypes, and presence of intimin gene eae and enterohaemolysin gene ehxA. Multilocus sequencing typing (MLST) was used to assess phylogenetic relationships. Clinical features were collected and analyzed using data from the routine infection control measures in the county. A total of 14,550 samples were enrolled in this 12-years period study, and 175 (1.2%) stools were stx positive by real-time PCR. The overall incidence of STEC infection was 4.9 cases per 100,000 person-years during the project period. Seventy-five isolates, with one isolate per sample were recovered, among which 43 were from non-bloody stools, 32 from BD, and 3 out of the 75 STEC positive patients developed HUS. The presence of stx2 in both stools and isolates were associated with BD (p = 0.008, p = 0.05), and the presence of eae in isolates was related to BD (p = 0.008). The predominant serogenotypes associated with BD were O157:H7, O26:H11, O121:H19, and O103:H2. Isolates from HUS were O104:H4 and O98: H21 serotypes. Phylogenetic analysis revealed our strains were highly diverse, and showed close relatedness to HUS-associated STEC collection strains. In conclusion, the presence of stx2 in stool was related to BD already at the initial diagnostic procedure, thus could be used as risk predictor at an early stage. STEC isolates with stx2 and eae were significantly associated with BD. The predominant serotypes associated with BD were O157:H7, O26:H11, O121:H19, and O103:H2. Nevertheless, the pathogenic potential of other serotypes and genotypes should not be neglected.
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Affiliation(s)
- Xiangning Bai
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institute, Karolinska University Hospital, Huddinge, Sweden
- State Key Laboratory of Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | | | | | | | - Stefan Monecke
- Abbott (Alere Technologies GmbH), Jena, Germany
- Institute for Medical Microbiology and Hygiene, Technische Universität Dresden, Dresden, Germany
- InfectoGnostics Research Campus, Jena, Germany
| | - Ralf Ehricht
- Institute for Medical Microbiology and Hygiene, Technische Universität Dresden, Dresden, Germany
- InfectoGnostics Research Campus, Jena, Germany
| | - Sture Löfgren
- Department of Laboratory Medicine, Jönköping, Sweden
| | - Andreas Matussek
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institute, Karolinska University Hospital, Huddinge, Sweden
- Department of Laboratory Medicine, Jönköping, Sweden
- Karolinska University Laboratory, Stockholm, Sweden
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10
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Luetragoon T, Rutqvist LE, Tangvarasittichai O, Andersson BÅ, Löfgren S, Usuwanthim K, Lewin NL. Interaction among smoking status, single nucleotide polymorphisms and markers of systemic inflammation in healthy individuals. Immunology 2018; 154:98-103. [PMID: 29140561 DOI: 10.1111/imm.12864] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/26/2017] [Accepted: 11/04/2017] [Indexed: 12/24/2022] Open
Abstract
Cigarette smoke contains toxic and carcinogenic substances that contribute to the development of cancer and various diseases. Genetic variation might be important, because not all smokers develop smoking-related disease. The current study addressed the possible interactions among selected single nucleotide polymorphisms (SNPs) in genes related to systemic inflammation, smoking status, the levels of circulating immune response cells and plasma biomarkers of systemic inflammation. Sixty-four healthy blood donors were recruited, 31 of whom were current smokers and 33 were never-users of tobacco products, references. Compared to references, the smokers showed significantly increased levels of circulating total white blood cells, lymphocytes, monocytes, neutrophils, basophils and C-reactive protein (CRP). Smokers also more frequently exhibited circulating cell phenotypes that are associated with an immunocompromised state: CD8dim cells in the lymphocyte group, CD13+ CD11+ , CD13+ CD14+ , CD13+ CD56+ cells in the monocyte group and CD13+ CD11+ , CD13+ CD56+ cells in the neutrophil group. We observed an interaction among SNPs, smoking status and some of the studied biomarkers. The average plasma CRP level was significantly higher among the smokers, with the highest level found among those with the CRP rs1800947 CC genotype. Additionally, an increased CD8+ GZB+ cells in the CD8dim group were found among smokers with the GZB rs8192917 AA genotype. Thus, smoking appears to be associated with systemic inflammation and increased levels of circulating immunosuppressive cells. The extent of these effects was associated with SNPs among the smokers. This observation may contribute to a better understanding of the genetic susceptibility of smoking-related disease and the variations observed in clinical outcomes.
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Affiliation(s)
- Thitiya Luetragoon
- Department of Medical Technology, Naresuan University, Phitsanulok, Thailand.,Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden.,Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Lars E Rutqvist
- Scientific Affairs Group, Swedish Match AB, Stockholm, Sweden
| | | | - Bengt-Åke Andersson
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden.,Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Sture Löfgren
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden
| | - Kanchana Usuwanthim
- Department of Medical Technology, Naresuan University, Phitsanulok, Thailand
| | - Nongnit L Lewin
- Department of Laboratory Medicine, Ryhov Hospital, Jönköping, Sweden.,Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
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11
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Löfgren S. Flat-mount preparation of lens epithelium. Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.01342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S. Löfgren
- Karolinska Institutet, St. Erik Eye Hospital; Stockholm Sweden
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Strindhall J, Löfgren S, Främsth C, Matussek A, Bengner M, Ernerudh J, Wikby A. CD4/CD8 ratio<1 is associated with lymphocyte subsets, CMV and gender in 71-year old individuals: 5-Year follow-up of the Swedish HEXA Immune Longitudinal Study. Exp Gerontol 2017; 95:82-87. [PMID: 28476585 DOI: 10.1016/j.exger.2017.03.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 01/27/2017] [Accepted: 03/22/2017] [Indexed: 10/19/2022]
Affiliation(s)
- Jan Strindhall
- School of Health and Welfare, Department of Natural Science and Biomedicine, Jönköping University, Box 1026, SE-551 11 Jönköping, Sweden.
| | - Sture Löfgren
- Division of Medical Diagnostics, Ryhov County Hospital, SE-551 85 Jönköping, Sweden
| | - Caroline Främsth
- Division of Medical Diagnostics, Ryhov County Hospital, SE-551 85 Jönköping, Sweden
| | - Andreas Matussek
- Division of Medical Diagnostics, Ryhov County Hospital, SE-551 85 Jönköping, Sweden; Karolinska University Laboratory, Karolinska University Hospital, Solna, Sweden; Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Malin Bengner
- Department of Infectious Diseases, Ryhov County Hospital, SE-551 85 Jönköping, Sweden
| | - Jan Ernerudh
- Division of Clinical Immunology, Department of Molecular and Clinical Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden
| | - Anders Wikby
- School of Health and Welfare, Department of Natural Science and Biomedicine, Jönköping University, Box 1026, SE-551 11 Jönköping, Sweden
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13
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Laytragoon Lewin N, Lewin F, Andersson BÅ, Löfgren S, Rutqvist LE. The use of rapid and cost-effective blood-based biomarkers in combination with tumour TNM stage for individual head and neck cancer patient treatment selection. Med Oncol 2017; 34:63. [PMID: 28316053 PMCID: PMC5357467 DOI: 10.1007/s12032-017-0912-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 02/28/2017] [Indexed: 01/09/2023]
Abstract
Head and neck (H&N) cancer is an aggressive disease and the incidence has increased in younger population worldwide. Tumour TNM staging is the main basis for treatment decision despite significant variation in clinical outcome. Survival time of these patients has marginally improved during the last 30 years. Various biomarkers with cumbersome analysis, high cost, time consumption and requirement of special laboratory facilities have been investigated. However, none of these biomarkers have been shown to be suitable to use for individual H&N cancer patient treatment selection in the clinic. For practical use in clinical settings, the given biomarkers must be simple to analyse, rapid, cost effective and available in routine laboratories. With this intension, we suggested the combination of standard TNM staging and biomarkers associated with inflammation such as neutrophils, neutrophil to lymphocyte ratio, plasma C-reactive protein or plasma tumour necrosis factor alpha (TNFa) and single-nucleotide polymorphism in TNFa rs1800629 using blood-based analysis. The optimal treatment outcome of H&N cancer by using combination of TNM stage and these blood-based biomarkers for individual patient selection need further investigation.
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Affiliation(s)
- Nongnit Laytragoon Lewin
- Division of Medical Diagnostic, Ryhov Hospital, 55322, Jönköping, Sweden. .,Department of Clinical and Experimental Medicine, Linköping University, 58185, Linköping, Sweden.
| | - Freddi Lewin
- Department of Oncology, Ryhov Hospital, 55322, Jönköping, Sweden
| | - Bengt-Åke Andersson
- Division of Medical Diagnostic, Ryhov Hospital, 55322, Jönköping, Sweden.,Department of Clinical and Experimental Medicine, Linköping University, 58185, Linköping, Sweden
| | - Sture Löfgren
- Division of Medical Diagnostic, Ryhov Hospital, 55322, Jönköping, Sweden
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14
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Laytragoon-Lewin N, Cederblad L, Andersson BÅ, Olin M, Nilsson M, Rutqvist LE, Lundgren J, Engström M, Tytor W, Löfgren S, Lewin F. Single-Nucleotide Polymorphisms and Cancer Risk, Tumor Recurrence, or Survival of Head and Neck Cancer Patients. Oncology 2016; 92:161-169. [PMID: 27997918 DOI: 10.1159/000452278] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 09/19/2016] [Indexed: 11/19/2022]
Abstract
OBJECTIVE This paper aims at studying the influence of single-nucleotide polymorphisms (SNPs) on cancer risk, tumor recurrence, and survival in head and neck (H&N) cancer patients. METHODS A total of 45 SNPs in 41 genes were investigated. A total of 174 Caucasian H&N cancer patients and 245 healthy blood donors were enrolled in the study. RESULTS Ten SNPs were associated with H&N cancer risk, but the identified SNPs differed among males and females. Some of the SNPs were related to immune response genes. The immune response gene SNPs were also related to survival. In particular, we noted that the tumor necrosis factor alpha (TNFα) rs1800629 could have an influence on cancer risk, tumor recurrence as well as survival. CONCLUSION Genetic variation of the TNFα rs1800629 might be useful as a biomarker in clinical decision-making since it was found to be related to cancer risk, tumor recurrence, and survival of H&N cancer patients.
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15
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Dienus O, Sokolova E, Nyström F, Matussek A, Löfgren S, Blom L, Pettersson TJR, Lindgren PE. Norovirus Dynamics in Wastewater Discharges and in the Recipient Drinking Water Source: Long-Term Monitoring and Hydrodynamic Modeling. Environ Sci Technol 2016; 50:10851-10858. [PMID: 27649279 DOI: 10.1021/acs.est.6b02110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Norovirus (NoV) that enters drinking water sources with wastewater discharges is a common cause of waterborne outbreaks. The impact of wastewater treatment plants (WWTPs) on the river Göta älv (Sweden) was studied using monitoring and hydrodynamic modeling. The concentrations of NoV genogroups (GG) I and II in samples collected at WWTPs and drinking water intakes (source water) during one year were quantified using duplex real-time reverse-transcription polymerase chain reaction. The mean (standard deviation) NoV GGI and GGII genome concentrations were 6.2 (1.4) and 6.8 (1.8) in incoming wastewater and 5.3 (1.4) and 5.9 (1.4) log10 genome equivalents (g.e.) L-1 in treated wastewater, respectively. The reduction at the WWTPs varied between 0.4 and 1.1 log10 units. In source water, the concentration ranged from below the detection limit to 3.8 log10 g.e. L-1. NoV GGII was detected in both wastewater and source water more frequently during the cold than the warm period of the year. The spread of NoV in the river was simulated using a three-dimensional hydrodynamic model. The modeling results indicated that the NoV GGI and GGII genome concentrations in source water may occasionally be up to 2.8 and 1.9 log10 units higher, respectively, than the concentrations measured during the monitoring project.
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Affiliation(s)
- Olaf Dienus
- Ryhov County Hospital , Medical Services, Clinical Microbiology, SE-551 85 Jönköping, Sweden
- Linköping University , Department of Clinical and Experimental Medicine, Medical Microbiology, SE-581 85 Linköping, Sweden
| | - Ekaterina Sokolova
- Chalmers University of Technology , Department of Civil and Environmental Engineering, Water Environment Technology, SE-412 96 Gothenburg, Sweden
| | - Fredrik Nyström
- Ryhov County Hospital , Medical Services, Clinical Microbiology, SE-551 85 Jönköping, Sweden
- Linköping University , Department of Clinical and Experimental Medicine, Medical Microbiology, SE-581 85 Linköping, Sweden
| | - Andreas Matussek
- Ryhov County Hospital , Medical Services, Clinical Microbiology, SE-551 85 Jönköping, Sweden
| | - Sture Löfgren
- Ryhov County Hospital , Medical Services, Clinical Microbiology, SE-551 85 Jönköping, Sweden
| | - Lena Blom
- Chalmers University of Technology , Department of Civil and Environmental Engineering, Water Environment Technology, SE-412 96 Gothenburg, Sweden
- City of Gothenburg , Department of Sustainable Waste and Water, Box 123, SE-424 23 Angered, Sweden
| | - Thomas J R Pettersson
- Chalmers University of Technology , Department of Civil and Environmental Engineering, Water Environment Technology, SE-412 96 Gothenburg, Sweden
| | - Per-Eric Lindgren
- Ryhov County Hospital , Medical Services, Clinical Microbiology, SE-551 85 Jönköping, Sweden
- Linköping University , Department of Clinical and Experimental Medicine, Medical Microbiology, SE-581 85 Linköping, Sweden
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Löfgren S, de Verdier K, Ek U, Fernell E. Early childhood blindness - etiologies and comorbidity. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Matussek A, Einemo IM, Jogenfors A, Löfdahl S, Löfgren S. Shiga Toxin-Producing Escherichia coli in Diarrheal Stool of Swedish Children: Evaluation of Polymerase Chain Reaction Screening and Duration of Shiga Toxin Shedding. J Pediatric Infect Dis Soc 2016; 5:147-51. [PMID: 27199470 PMCID: PMC5407124 DOI: 10.1093/jpids/piv003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 01/13/2015] [Indexed: 02/06/2023]
Abstract
BACKGROUND Shiga toxin (Stx)-producing Escherichia coli (STECs) are the most common cause of acute renal failure in children. The present study evaluated a 10-year STEC polymerase chain reaction screening regimen in children. METHODS All routine stool culture specimens from patients below 10 years of age (n = 10 342) from May 2003 through April 2013 in the County of Jönköping, Sweden, were included. Patients were divided in 1 group where analyses of STEC were requested by the clinician (n = 2366) and 1 screening group (n = 7976). Patients who were positive for STEC were tested weekly until they were negative. Clinical data were collected through a questionnaire and by reviewing medical records. RESULTS In specimens from 191 patients, stx was found (162 index cases). The prevalence was 1.8% in the requested group and 1.5% in the screening group (P = .5). Diarrhea was the most frequent symptom reported in 156 cases and of these 29 (19%) had hemorrhagic colitis (HC) and 7 children developed hemolytic uremic syndrome (HUS). No difference regarding severity of symptoms between the groups was found. Stx2 predominated in cases with HC (P < .0001) and HUS (P = .04). Median stx shedding duration was 20 days (1-256 days), and no difference in duration was seen between stx types (P = .106-1.00) and presence of eaeA (P = .72). CONCLUSIONS Most STEC cases were found in the screening group with comparable prevalence and disease severity as in patients where analysis was requested. Furthermore, non-O157 serotypes caused severe disease when carrying stx2, and prolonged shedding of STEC may be a risk for transmission.
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Affiliation(s)
- Andreas Matussek
- Department of Clinical Microbiology, County Hospital Ryhov, Jönköping, Sweden
| | - Ing-Marie Einemo
- Department of Communicable Disease Control, County of Jönköping, Sweden
| | - Anna Jogenfors
- Department of Clinical Microbiology, County Hospital Ryhov, Jönköping, Sweden
| | | | - Sture Löfgren
- Department of Clinical Microbiology, County Hospital Ryhov, Jönköping, Sweden
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18
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Strindhall J, Ernerudh J, Mörner A, Waalen K, Löfgren S, Matussek A, Bengner M. Humoral response to influenza vaccination in relation to pre-vaccination antibody titres, vaccination history, cytomegalovirus serostatus and CD4/CD8 ratio. Infect Dis (Lond) 2016; 48:436-42. [PMID: 27030916 DOI: 10.3109/23744235.2015.1135252] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Annual vaccination against influenza virus is generally recommended to elderly and chronically ill, but the relative importance of factors influencing the outcome is not fully understood. METHODS In this study of 88 individuals all aged 69 years, the increase in haemagglutinin-inhibiting (HI) antibodies to trivalent inactivated influenza vaccine was correlated with HI titres before vaccination, prior vaccinations against influenza, cytomegalovirus serostatus and, as an estimate of immune risk profile, the ratio between CD4 + and CD8 + T cells. RESULTS Vaccine responses were impaired by high pre-existing HI antibody titres. For influenza B repeated vaccinations and an inverse CD4/CD8 ratio had a negative impact on the vaccine response. Cytomegalovirus seropositivity had no apparent effect on HI titres before or after vaccination. CONCLUSIONS It is concluded that both pre-existing HI antibodies and previous vaccinations to influenza may influence the humoral response to influenza vaccination and that a CD4/CD8 ratio < 1 may indicate an impaired ability to respond to repeated antigenic stimulation.
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Affiliation(s)
- Jan Strindhall
- a School of Health Sciences, Department of Natural Science and Biomedicine , Jönköping University , Jönköping , Sweden
| | - Jan Ernerudh
- b Division of Clinical Immunology, Department of Molecular and Clinical Medicine, Faculty of Health Sciences , Linköping University , Linköping , Sweden
| | - Andreas Mörner
- c Department of Microbiology , Public Health Agency of Sweden , Sweden
| | - Kristian Waalen
- d Department of Virology , Norwegian Institute of Public Health , Oslo , Norway
| | - Sture Löfgren
- e Department of Laboratory Medicine , Clinical Microbiology, Ryhov County Hospital , Jönköping , Sweden
| | - Andreas Matussek
- e Department of Laboratory Medicine , Clinical Microbiology, Ryhov County Hospital , Jönköping , Sweden
| | - Malin Bengner
- f Department of Infectious Diseases , Ryhov County Hospital , Jönköping , Sweden
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Lager M, Mernelius S, Löfgren S, Söderman J. Real-Time PCR Typing of Escherichia coli Based on Multiple Single Nucleotide Polymorphisms--a Convenient and Rapid Method. Clin Lab 2016; 62:349-355. [PMID: 27156323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND Healthcare-associated infections caused by Escherichia coli and antibiotic resistance due to extended-spectrum beta-lactamase (ESBL) production constitute a threat against patient safety. To identify, track, and control outbreaks and to detect emerging virulent clones, typing tools of sufficient discriminatory power that generate reproducible and unambiguous data are needed. METHODS A probe based real-time PCR method targeting multiple single nucleotide polymorphisms (SNP) was developed. The method was based on the multi locus sequence typing scheme of Institute Pasteur and by adaptation of previously described typing assays. RESULTS An 8 SNP-panel that reached a Simpson's diversity index of 0.95 was established, based on analysis of sporadic E. coli cases (ESBL n = 27 and non-ESBL n = 53). This multi-SNP assay was used to identify the sequence type 131 (ST131) complex according to the Achtman's multi locus sequence typing scheme. However, it did not fully discriminate within the complex but provided a diagnostic signature that outperformed a previously described detection assay. Pulsed-field gel electrophoresis typing of isolates from a presumed outbreak (n = 22) identified two outbreaks (ST127 and ST131) and three different non-outbreak-related isolates. Multi-SNP typing generated congruent data except for one non-outbreak-related ST131 isolate. CONCLUSIONS We consider multi-SNP real-time PCR typing an accessible primary generic E. coli typing tool for rapid and uniform type identification.
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20
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KronschlaGer M, Talebizadeh N, Yu Z, Löfgren S, Findl O. Sterile corneal keratolysis in the rat at 300 nm. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Z. Yu
- Gullstrand lab; Uppsala University; Uppsala Sweden
| | - S. Löfgren
- Ophthalmology; Karolinska Institutet; Stockholm Sweden
| | - O. Findl
- Ophthalmology; Hanusch Hospital; Vienna Austria
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21
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Löfgren S, Hengstler J, Jans E. Clinical guidelines for acute exposure to laser pointer radiation. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S. Löfgren
- Karolinska Institutet; St. Erik Eye Hospital; Stockholm Sweden
| | - J. Hengstler
- Karolinska Institutet; St. Erik Eye Hospital; Stockholm Sweden
| | - E. Jans
- Karolinska Institutet; St. Erik Eye Hospital; Stockholm Sweden
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22
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Olsen RS, Andersson RE, Zar N, Löfgren S, Wågsäter D, Matussek A, Dimberg J. Prognostic significance of PLA2G4C gene polymorphism in patients with stage II colorectal cancer. Acta Oncol 2015; 55:474-9. [PMID: 26364726 DOI: 10.3109/0284186x.2015.1073350] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Phospholipase A2 Group IV C (PLA2G4C) catalyzes the release of certain fatty acids from phospholipids and plays a role in a range of physiological functions, such as remodeling of cell membranes and the production of prostaglandins. Furthermore, it has been proposed that PLA2G4C plays an important role in breast cancer cell chemotaxis. This study aimed to investigate the effect of a single nucleotide polymorphism (SNP) rs1549637 (T>A) of the PLA2G4C gene on the prognosis of colorectal cancer (CRC). MATERIAL AND METHODS Whole blood DNA was extracted from 381 patients with CRC and 618 controls, and a TaqMan SNP genotyping assay was used to determine the distribution of the genotypes. Cancer-specific and disease-free survival was analyzed by Kaplan-Meier graphs and by uni- and multivariable Cox regression. RESULTS The cancer-specific survival differed between the genotypes (p = 0.019) and the carriers of the A allele were associated with the highest risk of CRC death, with a hazard ratio (HR) of 1.72 [95% confidence interval (CI) 1.17-2.53, p = 0.006] compared with homozygous carriers of the T allele. This increased mortality in the carriers with the allele A was especially marked in stage II with an HR of 3.84 (95% CI 1.51-9.78, p = 0.005). CONCLUSION The A allele in PLA2G4C SNP (rs1549637) is associated with a worse prognosis in patients with CRC, especially in stage II disease, and it could be a potential prognostic biomarker in the planning of individual adjuvant therapy in stage II patients.
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Affiliation(s)
- Renate S. Olsen
- Laboratory Services, Ryhov County Hospital, Jönköping, Sweden
- Division of Drug Research, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | | | - Niklas Zar
- Department of Surgery, Ryhov County Hospital, Jönköping, Sweden
| | - Sture Löfgren
- Department of Clinical Microbiology, Ryhov County Hospital, Jönköping, Sweden, and
| | - Dick Wågsäter
- Division of Drug Research, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | | | - Jan Dimberg
- Natural Science and Biomedicine, University College of Health Sciences, Jönköping, Sweden
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Ögren J, Dienus O, Löfgren S, Einemo IM, Iveroth P, Matussek A. Dientamoeba fragilis prevalence coincides with gastrointestinal symptoms in children less than 11 years old in Sweden. Eur J Clin Microbiol Infect Dis 2015; 34:1995-8. [PMID: 26173693 PMCID: PMC4565872 DOI: 10.1007/s10096-015-2442-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 06/26/2015] [Indexed: 12/31/2022]
Abstract
Dientamoeba fragilis is a protozoan with a debated role in gastrointestinal (GI) disease. Although correlated to GI symptoms, no virulence factors have been described. In this study, we evaluated the cause of GI symptoms in children at two schools, with children aged 1 to 10 years, in the county of Jönköping, Sweden. D. fragilis infection correlated to GI symptoms in children and Enterobius vermicularis correlated to D. fragilis infection.
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Affiliation(s)
- J Ögren
- Clinical Microbiology Laboratory, County Hospital Ryhov, 55185, Region Jönköping County, Sweden
| | - O Dienus
- Clinical Microbiology Laboratory, County Hospital Ryhov, 55185, Region Jönköping County, Sweden
| | - S Löfgren
- Clinical Microbiology Laboratory, County Hospital Ryhov, 55185, Region Jönköping County, Sweden
| | - I-M Einemo
- Department for Control of Communicable Diseases, Region Jönköping County, Sweden
| | - P Iveroth
- Department for Control of Communicable Diseases, Region Jönköping County, Sweden
| | - A Matussek
- Clinical Microbiology Laboratory, County Hospital Ryhov, 55185, Region Jönköping County, Sweden.
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Dimberg J, Hong TT, Nguyen LTT, Skarstedt M, Löfgren S, Matussek A. Common 4977 bp deletion and novel alterations in mitochondrial DNA in Vietnamese patients with breast cancer. Springerplus 2015; 4:58. [PMID: 25674508 PMCID: PMC4318828 DOI: 10.1186/s40064-015-0843-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 01/22/2015] [Indexed: 01/24/2023]
Abstract
Mitochondrial DNA (mtDNA) has been proposed to be involved in carcinogenesis and ageing. The mtDNA 4977 bp deletion is one of the most frequently observed mtDNA mutations in human tissues and may play a role in breast cancer (BC). The aim of this study was to investigate the frequency of mtDNA 4977 bp deletion in BC tissue and its association with clinical factors. We determined the presence of the 4977 bp common deletion in cancer and normal paired tissue samples from 106 Vietnamese patients with BC by sequencing PCR products. The mtDNA 4977 bp deletion was significantly more frequent in normal tissue in comparison with paired cancer tissue. Moreover, the incidence of the 4977 bp deletion in BC tissue was significantly higher in patients with estrogen receptor (ER) positive as compared with ER negative BC tissue. Preliminary results showed, in cancerous tissue, a significantly higher incidence of novel deletions in the group of patients with lymph node metastasis in comparison with the patients with no lymph node metastasis. We have found 4977 bp deletion in mtDNA to be a common event in BC and with special reference to ER positive BC. In addition, the novel deletions were shown to be related to lymph node metastasis. Our finding may provide complementary information in prediction of clinical outcome including metastasis, recurrence and survival of patients with BC.
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Affiliation(s)
- Jan Dimberg
- Department of Natural Science and Biomedicine, University College of Health Sciences, Jönköping, Sweden
| | - Thai Trinh Hong
- Key Laboratory of Enzyme and Protein Technology, Department of Biology, College of Science, Vietnam National University, Hanoi, Vietnam
| | - Linh Tu Thi Nguyen
- Key Laboratory of Enzyme and Protein Technology, Department of Biology, College of Science, Vietnam National University, Hanoi, Vietnam
| | - Marita Skarstedt
- Departments of Clinical Microbiology, Ryhov County Hospital, Jönköping, Sweden
| | - Sture Löfgren
- Departments of Clinical Microbiology, Ryhov County Hospital, Jönköping, Sweden
| | - Andreas Matussek
- Departments of Laboratory Services, Ryhov County Hospital, SE-551 85 Jönköping, Sweden
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25
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Olsen RS, Lindh M, Vorkapic E, Andersson RE, Zar N, Löfgren S, Dimberg J, Matussek A, Wågsäter D. CD93 gene polymorphism is associated with disseminated colorectal cancer. Int J Colorectal Dis 2015; 30:883-90. [PMID: 26008729 PMCID: PMC4471320 DOI: 10.1007/s00384-015-2247-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/08/2015] [Indexed: 02/04/2023]
Abstract
PURPOSE Cluster of differentiation 93 (CD93) is involved in apoptosis and inflammation and has a suggested role in angiogenesis, and all of which are involved in the development and dissemination of cancer. We evaluated the expression of CD93 and the association with two single nucleotide polymorphisms (SNPs), rs2749812 and rs2749817, as possible biomarkers in colorectal cancer (CRC). METHODS Tissue levels and plasma levels of CD93 were measured using an enzyme-linked immunosorbent assay (ELISA). Expression of CD93 was determined by immunohistochemistry, western blot and gene expression analysis. Genotype frequencies were established for the SNPs by real-time polymerase chain reaction (PCR), and the association with tumour stage and survival was analysed. RESULTS Total CD93 levels were 82% higher (P < 0.001) in tumours compared to matched normal tissues. Mean levels of soluble CD93 in plasma were 30% lower (P < 0.001) in the patients compared to the controls. The T/T genotype of SNP rs2749817 was more common in stage IV patients, with consequently higher risk of CRC death (T/T vs. C/C and C/T; hazard ratio (HR) = 1.73, 95% confidence interval (CI) = 1.11-2.67, P = 0.014), and was associated with a higher risk of CRC recurrence after radical operation (T/T vs. C/C and C/T; HR = 2.07, CI = 1.22-3.51, P = 0.007). CONCLUSIONS We showed that the T/T genotype of SNP rs2749817 is associated with disseminated cancer at diagnosis and an increased recurrence rate after radical operation. Patients with this genotype may benefit from early identification.
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Affiliation(s)
- Renate S Olsen
- Division of Drug Research, Department of Medical and Health Sciences, Faculty of Health Sciences, University of Linköping, 58185, Linköping, Sweden,
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Dimberg J, Olsen RS, Skarstedt M, Löfgren S, Zar N, Matussek A. Polymorphism of the p38β gene in patients with colorectal cancer. Oncol Lett 2014; 8:1093-1095. [PMID: 25120664 PMCID: PMC4114648 DOI: 10.3892/ol.2014.2315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 06/12/2014] [Indexed: 12/19/2022] Open
Abstract
The p38 mitogen-activated protein kinase (MAPK) signaling pathways have been proposed to participate in the pathological process of cancer by affecting inflammation, proliferation, metastasis and cell survival. A single nucleotide polymorphism (SNP; rs2235356, -1628A→G) in the promoter region of the p38β gene has been proposed as a genetic modifier for colorectal cancer (CRC) in a Chinese population. The present study evaluated the susceptibility of patients possessing this SNP to CRC, in addition to determining its association with clinical parameters in Swedish patients with CRC. Using the LightSNiP genotyping assay, this SNP was screened in 389 patients with CRC and 517 control subjects. No significant difference in the genotype distribution or in the allelic frequencies was identified between the two groups nor was any association identified with the clinical parameters. These findings indicate that the -1628A→G polymorphism of the p38β gene is not significantly associated with a susceptibility to CRC in a Swedish population.
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Affiliation(s)
- Jan Dimberg
- Department of Natural Science and Biomedicine, University College of Health Sciences, Jönköping, SE-551 11, Sweden
| | - Renate Slind Olsen
- Department of Laboratory Services, Ryhov County Hospital, Jönköping, SE-551 85, Sweden ; Division of Drug Research, Department of Medical and Health Sciences, Faculty of Health Sciences, Linköping University, Linköping SE-581 85, Sweden
| | - Marita Skarstedt
- Department of Clinical Microbiology, Ryhov County Hospital, Jönköping, SE-551 85, Sweden
| | - Sture Löfgren
- Department of Laboratory Services, Ryhov County Hospital, Jönköping, SE-551 85, Sweden
| | - Niklas Zar
- Department of Surgery, Ryhov County Hospital, Jönköping, SE-551 85, Sweden
| | - Andreas Matussek
- Department of Laboratory Services, Ryhov County Hospital, Jönköping, SE-551 85, Sweden
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Bengnér M, Béziat V, Ernerudh J, Nilsson BO, Löfgren S, Wikby A, Malmberg KJ, Strindhall J. Independent skewing of the T cell and NK cell compartments associated with cytomegalovirus infection suggests division of labor between innate and adaptive immunity. Age (Dordr) 2014; 36:571-582. [PMID: 24065293 PMCID: PMC4039248 DOI: 10.1007/s11357-013-9587-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 09/16/2013] [Indexed: 06/02/2023]
Abstract
Cytomegalovirus (CMV) infection induces profound changes in different subsets of the cellular immune system. We have previously identified an immune risk profile (IRP) where CMV-associated changes in the T cell compartment, defined as a CD4/CD8 ratio < 1, are associated with increased mortality in elderly people. Since natural killer (NK) cells have an important role in the defense against viral infections, we examined whether the expansion of CD8 + T cells seen in individuals with CD4/CD8 ratio < 1 is coupled to a parallel skewing of the NK cell compartment. A number of 151 subjects were examined with CMV serology and a flow cytometry panel for assessment of T cell and NK cell subsets. CMV-seropositive individuals had higher frequencies of CD57 + and NKG2C + NK cells and lower frequencies of NKG2A + NK cells, in line with a more differentiated NK cell compartment. Intriguingly, however, there was no correlation between CD4/CD8 ratio and NK cell repertoires among CMV-seropositive donors, despite the profound skewing of the T cell compartment in the group with CD4/CD8 ratio < 1. Conversely, donors with profound expansion of NK cells, defined as NKG2C + NK cells with high expression of CD57 and ILT-2, did not display more common changes in their T cell repertoire, suggesting that NK cell expansion is independent of the T cell-defined IRP. Altogether, these results indicate that the effect of CMV on CD8 T cells and NK cells is largely nonoverlapping and independent.
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Affiliation(s)
- Malin Bengnér
- Department of Infectious Diseases, Ryhov County Hospital, Jönköping, Sweden,
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Dimberg J, Skarstedt M, Löfgren S, Zar N, Matussek A. Protein expression and gene polymorphism of CXCL10 in patients with colorectal cancer. Biomed Rep 2014; 2:340-343. [PMID: 24748971 PMCID: PMC3990219 DOI: 10.3892/br.2014.255] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 03/04/2014] [Indexed: 12/30/2022] Open
Abstract
Chemokines (chemotactic cytokines) promote leukocyte attraction to sites of inflammation and cancer. Certain chemokines promote and regulate neoplastic progression, including metastasis and angiogenesis. One such chemokine, CXCL10, was found to be expressed in colorectal cancer (CRC) tissue. To gain insight into the prognostic significance of CXCL10, we investigated whether the levels of this chemokine were altered in the colorectal tissue or plasma of CRC patients. Using Luminex technology for protein analyses, we observed a significantly higher CXCL10 protein level in cancer tissue compared to that in paired normal tissue. Moreover, significantly higher plasma levels of CXCL10 were detected in patients compared to those in control subjects and the plasma levels of CXCL10 in disseminated disease were found to be significantly higher compared to those in localized disease. The single-nucleotide polymorphism rs8878, which has been described in exon 4 in the 3′-untranslated region of the CXCL10 gene, was investigated using a TaqMan system. There were significant differences in genotype distribution and allelic frequencies between CRC patients and control subjects. In conclusion, altered CXCL10 protein concentrations in CRC tissues or plasma and the rs8878 genotype variant of CXCL10 may contribute to the prediction of clinical outcome.
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Affiliation(s)
- Jan Dimberg
- Department of Natural Science and Biomedicine, University College of Health Sciences, Jönköping, Småland SE-55111, Ryhov County Hospital, Jönköping, Småland SE-55185, Sweden
| | - Marita Skarstedt
- Department of Clinical Microbiology, Ryhov County Hospital, Jönköping, Småland SE-55185, Sweden
| | - Sture Löfgren
- Department of Clinical Microbiology, Ryhov County Hospital, Jönköping, Småland SE-55185, Sweden
| | - Niklas Zar
- Department of Surgery, Ryhov County Hospital, Jönköping, Småland SE-55185, Sweden
| | - Andreas Matussek
- Department of Laboratory Services, Ryhov County Hospital, Jönköping, Småland SE-55185, Sweden
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Dimberg J, Hong TT, Skarstedt M, Löfgren S, Zar N, Matussek A. Novel and differential accumulation of mitochondrial DNA deletions in Swedish and vietnamese patients with colorectal cancer. Anticancer Res 2014; 34:147-152. [PMID: 24403455] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Mitochondrial DNA (mtDNA) has been proposed to be involved in carcinogenesis and aging. The mtDNA 4977 bp deletion is one of the most frequently observed mtDNA mutations in human tissues and may play a role in colorectal cancer (CRC). In the present study, we aimed to evaluate the frequency of mtDNA 4977 bp deletion in CRC tissues and its association with clinical factors. PATIENTS AND METHODS We determined the presence of the 4977 bp common deletion in cancer and normal paired tissue samples from 105 Swedish and 88 Vietnamese patients with CRC using polymerase chain reaction (PCR) assays. RESULTS The mtDNA 4977 bp deletion was shown to be significantly more frequent in normal tissues in comparison with paired cancer tissues in both Swedish and Vietnamese patients. The 4977 bp common deletion was significantly more frequent in cancer tissues of the Vietnamese patients compared to the Swedish patients, and in Vietnamese cancer tissues, the 4977 bp deletion was significantly over represented in those with localized disease compared to those with disseminated disease. Moreover, we detected nine novel mtDNA deletions and found a significantly higher rate of these in CRC tissues in Swedish in comparison to Vietnamese patients. CONCLUSION The mtDNA 4977 bp deletion seems to have an impact on the clinical outcome of CRC in Vietnamese patients, that the Swedish patients accumulate more of the detected novel deletions in CRC tissue compared to Vietnamese patients probably indicates divergent mechanisms in colorectal carcinogenesis.
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Affiliation(s)
- Jan Dimberg
- Department of Laboratory Services, Ryhov County Hospital, SE-551 85, Jönköping, Sweden.
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Dimberg J, Hong TT, Skarstedt M, Löfgren S, Zar N, Matussek A. Detection of cytomegalovirus DNA in colorectal tissue from Swedish and Vietnamese patients with colorectal cancer. Anticancer Res 2013; 33:4947-4950. [PMID: 24222134] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Human cytomegalovirus (HCMV) has been implicated as a factor, which might be associated with colorectal cancer (CRC) progression. Data from studies with HCMV-infected tumour cell lines have highlighted an oncomodulatory potential of HCMV. In the present study, we aimed to evaluate the prevalence of HCMV DNA in CRC tissue compared to matched normal tissue, and its association with clinical factors. PATIENTS AND METHODS We used quantitative real-time polymerase chain reaction assay to detect HCMV DNA in 202 cancerous and paired normal tissue from Swedish (n=119) and Vietnamese (n=83) CRC patients. RESULTS Overall, the HCMV DNA rate was significantly higher in cancerous in relation to paired normal tissue. Furthermore, a significantly higher frequency (39.8%) of HCMV DNA was observed in cancer tissues from the Vietnamese patients compared to the Swedish patients (15.1%). The prevalence of HCMV DNA in CRC tissue of 50% of those with disseminated disease tended to be higher compared to those with localized disease, with a prevalence of 33.3% in Vietnamese patients. CONCLUSION Our observations indicate that the prevalence of HCMV DNA differs significantly between cancer and matched normal tissues. Thus, these data support a possible role of CMV in CRC. Moreover, we noted differences between Swedish and Vietnamese patients, indicating a role of ethnicity.
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Affiliation(s)
- Jan Dimberg
- Department of Laboratory Services, Ryhov County Hospital, SE-551 85 Jönköping, Sweden.
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Ögren J, Dienus O, Löfgren S, Iveroth P, Matussek A. Dientamoeba fragilis DNA detection in Enterobius vermicularis eggs. Pathog Dis 2013; 69:157-8. [PMID: 23893951 PMCID: PMC3908373 DOI: 10.1111/2049-632x.12071] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 05/24/2013] [Accepted: 07/15/2013] [Indexed: 11/29/2022] Open
Abstract
Dientamoeba fragilis is an intestinal protozoan suspected of causing gastrointestinal symptoms, and its mode of transmission is unknown, although first described almost a century ago. A hypothesis is that Enterobius vermicularis is a vector for D. fragilis, and recently, D. fragilis DNA was detected within surface-sterilized eggs of E. vermicularis. Using real-time PCR, we detected D. fragilis DNA in 18 (85%) of 21 samples of E. vermicularis eggs collected from patients harbouring D. fragilis in faeces. This finding supports the hypothesis that E. vermicularis may have an important role in the transmission of D. fragilis. This paper describes a protocol to wash and surface-sterilize E. vermicularis eggs, with the aim of showing presence of both E. vermicularis and D. fragilis specific DNA within, and the results from 20 co-infected patients. The study has merit as a confirmatory study of the trials by Röser et al. (2013), and includes improvements of the protocol.
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Affiliation(s)
- Jessica Ögren
- Clinical Microbiology Laboratory, Department of Laboratory Medicine, Division of Medical Services, County Hospital Ryhov, Jönköping, Sweden
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Hammarskjöld F, Mernelius S, Andersson RE, Berg S, Hanberger H, Löfgren S, Malmvall BE, Petzold M, Matussek A. Possible transmission of Candida albicans on an intensive care unit: genotype and temporal cluster analyses. J Hosp Infect 2013; 85:60-5. [PMID: 23927923 DOI: 10.1016/j.jhin.2013.06.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 06/03/2013] [Indexed: 11/18/2022]
Abstract
BACKGROUND Nosocomial transmission of Candida spp. has not been fully explored and previous studies have shown conflicting results. AIM To evaluate the possible nosocomial transmission of Candida spp. on an intensive care unit (ICU). METHODS A prospective study was conducted for a period of 19 months, including all patients on our ICU with growth of Candida spp. from surveillance and directed cultures. Molecular typing with repetitive sequence-based polymerase chain reaction was used to define genotype relationships between the Candida albicans and Candida glabrata isolates. Candida isolates obtained from blood cultures taken from patients in our county outside the ICU were used as a reference. Temporal cluster analysis was performed to evaluate genotype distribution over time. FINDINGS Seventy-seven patients with 78 ICU stays, representing 12% of all ICU stays, were found to harbour 180 isolates of Candida spp. Molecular typing revealed 27 C. albicans genotypes and 10 of C. glabrata. Possible clustering, indicated by overlapping stays of patients with indistinguishable candida genotypes, was observed on seven occasions with C. albicans and on two occasions with C. glabrata. Two C. albicans genotypes were found significantly more often in the ICU group compared with the reference group. Moreover, C. albicans genotypes isolated from more than one patient were significantly more often found in the ICU group. Temporal cluster analysis revealed a significantly increased number of pairs with indistinguishable genotypes at a 21-day interval, indicating clustering. CONCLUSION This study indicates possible transmission of C. albicans between ICU patients based on genotyping and temporal cluster analysis.
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Affiliation(s)
- F Hammarskjöld
- Department of Anaesthesia and Intensive Care, Ryhov County Hospital, Jönköping, Sweden.
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VAN Nguyen S, Skarstedt M, Löfgren S, Zar N, Andersson RE, Lindh M, Matussek A, Dimberg J. Gene polymorphism of matrix metalloproteinase-12 and -13 and association with colorectal cancer in Swedish patients. Anticancer Res 2013; 33:3247-3250. [PMID: 23898086] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND It has been widely reported that matrix metalloproteinases (MMPs) have fundamental roles in pathological processes in cancer through degradation of basal membranes and extracellular matrix. For MMP12 and MMP13, a functional single nucleotide polymorphism (SNP) has been detected -82A →G (rs2276109) and -77A →G (rs2252070), respectively. These SNPs are suggested to have an influence on different diseases. The present study evaluated the association between these SNPs in patients with colorectal cancer (CRC) patients and healthy controls. PATIENTS AND METHODS Using the TaqMan system, these SNPs were screened in 385 patients with CRC and 619 controls. RESULTS No significant difference in genotype distribution or in allelic frequencies was found between the two groups. However, we showed that the AA MMP-12 genotype is connected with a higher risk of disseminated CRC (Odds Ratio=1.77; 95% Confidence Interval=1.11-2.81, p=0.018). CONCLUSION The results of this study suggest that the -82A →G (rs2276109) polymorphism of the MMP12 gene reflects clinical outcome of patients with CRC.
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Affiliation(s)
- Song VAN Nguyen
- Department of Natural Science and Biomedicine, University College of Health Sciences, Jönköping, Sweden
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Mernelius S, Löfgren S, Lindgren PE, Matussek A. The role of broth enrichment in Staphylococcus aureus cultivation and transmission from the throat to newborn infants: results from the Swedish hygiene intervention and transmission of S. aureus study. Eur J Clin Microbiol Infect Dis 2013; 32:1593-8. [PMID: 23818164 PMCID: PMC3825640 DOI: 10.1007/s10096-013-1917-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 06/20/2013] [Indexed: 11/30/2022]
Abstract
Staphylococcus aureus is detected by direct plating, whereas incubation in enrichment broth prior to plating to increase the proportion of positive samples has not been fully evaluated. S. aureus throat colonization has been suggested to be more common than colonization of the anterior nares, but no data are available on the transmission of S. aureus from the throat. Swab samples were collected from the anterior nares and umbilicus from newborn infants (n = 168), anterior nares, throat, skin lesions, and vagina from parents (n = 332), and anterior nares, throat, and skin lesions from healthcare workers (n = 231) at three maternity wards. spa typing was used to elucidate the transmission routes of S. aureus. The use of enrichment broth prior to plating increased the proportion of positive samples by 46 %. The prevalence of S. aureus colonization in adults was 58 %. Throat colonization (47 %) was significantly more common than colonization in any of the other screened sites (p < 0.001). In total, 103 out of 168 (61 %) newborn infants were colonized during their hospital stay. Overall, 124 S. aureus transmissions to newborn infants were detected. Although we detected an increased risk of transmission from the nares as compared to the throat, with an odds ratio of 4.8 [95 % confidence interval (CI) 1.8–12.7], we detected a transmission rate of 7 % from the throat. We show that S. aureus throat colonization is more common than colonization in any of the other sites among the parents and staff. We also show evidence of transmission from the throat.
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Affiliation(s)
- S Mernelius
- Clinical Microbiology, Division of Medical Services, County Hospital Ryhov, 551 85, Jönköping, Sweden
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Mernelius S, Löfgren S, Lindgren PE, Blomberg M, Olhager E, Gunnervik C, Lenrick R, Thrane MT, Isaksson B, Matussek A. The effect of improved compliance with hygiene guidelines on transmission of Staphylococcus aureus to newborn infants: the Swedish Hygiene Intervention and Transmission of S aureus study. Am J Infect Control 2013; 41:585-90. [PMID: 23352076 DOI: 10.1016/j.ajic.2012.09.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 09/26/2012] [Accepted: 09/26/2012] [Indexed: 10/27/2022]
Abstract
BACKGROUND Newborn infants are often colonized with Staphylococcus aureus originating from health care workers (HCWs). We therefore use colonization with S aureus of newborn infants to determine the effect of an improved compliance with hygiene guidelines on bacterial transmission. METHODS Compliance with hygiene guidelines was monitored prior to (baseline) and after (follow-up) a multimodal hygiene intervention in 4 departments of obstetrics and gynecology. spa typing was used to elucidate transmission routes of S aureus collected from newborn infants, mothers, fathers, staff members, and environment. RESULTS The compliance with hygiene guidelines increased significantly from baseline to follow-up. The transmission of S aureus from HCWs to infants was however not affected. Fathers had the highest colonization rates. Persistent carriage was indicated in 18% of the HCWs. The most commonly isolated spa type was t084, which was not detected in a previous study from the same geographic area. CONCLUSION It is possible to substantially improve the compliance with hygiene guidelines, by using multimodal hygiene intervention. The improved compliance did not decrease the transmission of S aureus from sources outside the own family to newborn infants. Furthermore, we show the establishment of a new spa type (t084), which now is very common in our region.
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Matussek A, Lindgren PE, Löfgren S, Mernelius S. The Role of Broth Enrichment in Cultivation and Transmission of Staphylococcus aureus from Throat: Findings from the Swedish HITS-study. Am J Infect Control 2013. [DOI: 10.1016/j.ajic.2013.03.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Strindhall J, Skog M, Ernerudh J, Bengner M, Löfgren S, Matussek A, Nilsson BO, Wikby A. The inverted CD4/CD8 ratio and associated parameters in 66-year-old individuals: the Swedish HEXA immune study. Age (Dordr) 2013; 35:985-991. [PMID: 22415616 PMCID: PMC3636392 DOI: 10.1007/s11357-012-9400-3] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 02/29/2012] [Indexed: 05/31/2023]
Abstract
The Swedish OCTO and NONA immune longitudinal studies were able to identify and confirm an immune risk profile (IRP) predictive of an increased 2-year mortality in very old individuals, 86-94 years of age. The IRP, was associated with persistent cytomegalovirus infection and characterized by inverted CD4/CD8 ratio and related to expansion of terminally differentiated effector memory T cells (TEMRA phenotype). In the present HEXA immune longitudinal study, we have examined a younger group of elderly individuals (n = 424, 66 years of age) in a population-based sample in the community of Jönköping, Sweden, to examine the relevance of findings previously demonstrated in the very old. Immunological monitoring that was conducted included T cell subsets and CMV-IgG and CMV-IgM serology. The result showed a prevalence of 15 % of individuals with an inverted CD4/CD8 ratio, which was associated with seropositivity to cytomegalovirus and increases in the level of TEMRA cells. The proportion of individuals with an inverted CD4/CD8 ratio was significantly higher in men whereas the numbers of CD3+CD4+ cells were significantly higher in women. In conclusion, these findings are very similar to those previously found by us in the Swedish longitudinal studies, suggesting that an immune profile previously identified in the very old also exists in the present sample of hexagenerians. Therefore, it will be important to examine clinical parameters, including morbidity and mortality, to assess whether the immune profile also is a risk profile associated with higher mortality in this sample of hexagenerians.
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Affiliation(s)
- J Strindhall
- School of Health Sciences, Department of Natural Science and Biomedicine, Jönköping University, Box 1026, 551 11, Jönköping, Sweden.
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Mernelius S, Svensson PO, Rensfeldt G, Davidsson E, Isaksson B, Löfgren S, Matussek A. Compliance with hygiene guidelines: the effect of a multimodal hygiene intervention and validation of direct observations. Am J Infect Control 2013; 41:e45-8. [PMID: 23337307 DOI: 10.1016/j.ajic.2012.09.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 08/24/2012] [Accepted: 09/04/2012] [Indexed: 10/27/2022]
Abstract
BACKGROUND Good compliance with hygiene guidelines is essential to prevent bacterial transmission and health care-associated infections. However, the compliance is usually <50%. METHODS A multimodal and multidisciplinary hygiene intervention was launched once the baseline compliance was determined through direct observations in 4 departments of obstetrics and gynecology. Detailed evaluations of the compliance rates were performed at point of stability (at 80%) and follow-up (3 years after hygiene intervention). Validation of direct observations was performed using blinded double appraisal and multiappraisal. RESULTS At baseline, the compliance with barrier precautions and the dress code at the 4 departments were 39% to 47% and 79% to 98%, respectively. Point of stability was reached approximately 1 year after the hygiene intervention was launched. The compliance with barrier precautions was significantly higher at follow-up compared with baseline in 3 departments. In the validation by double appraisal, 471 of 483 components were judged identical between observers. In the multiappraisal, 95% to 100% of the observers correctly judged the 7 components. CONCLUSION It is possible to improve compliance with hygiene guidelines, but, to ensure a long-lasting effect, a continuous focus on barrier precautions is required. Observation is a valid method to monitor compliance.
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Dimberg J, Hong TT, Skarstedt M, Löfgren S, Zar N, Matussek A. Analysis of APC and IGFBP7 promoter gene methylation in Swedish and Vietnamese colorectal cancer patients. Oncol Lett 2012; 5:25-30. [PMID: 23255887 DOI: 10.3892/ol.2012.967] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 07/31/2012] [Indexed: 01/05/2023] Open
Abstract
The tumour suppressor gene adenomatous polyposis coli (APC) is a key component that drives colorectal carcinogenesis. The reported DNA methylation in the promoter of APC varies greatly among studies of colorectal cancer (CRC) in different populations. Insulin-like growth factor binding protein 7 (IGFBP7), also known as IGFBP-related protein 1 (IGFBP-rP1), is expressed in various tissue types, including the lung, brain, prostate and gastrointestinal tract, and has been suggested to play a tumour suppressor role against colorectal carcinogenesis. Studies have indicated that IGFBP7 is inactivated by DNA methylation in human colon, lung and breast cancer. In the present study, we used the methylation-specific polymerase chain reaction to study the methylation status of the APC and IGFBP7 gene promoters in cancerous and paired normal tissue to evaluate its impact on clinical factors and association with ethnicity, represented by Swedish and Vietnamese CRC patients. We also investigated the distribution of CpG islands and the CpG dinucleotide density of each CpG island in the regions which were the subject of our investigation. Overall, normal tissue from Swedish patients exhibited a significantly higher frequency of IGFBP7 gene methylation in comparison with that of Vietnamese patients. Moreover, a significantly higher number of cancer tissues from Vietnamese individuals showed higher levels of methylation versus the paired normal tissue compared with that of Swedish patients. When we studied the methylation in cancer compared with the matched normal tissue in individuals, we found that a significantly higher number of Vietnamese patients had a higher degree of IGFBP7 gene methylation in cancer versus matched normal tissue in comparison with Swedish patients. Taken together, our results suggest that the methylation of the APC and IGFBP7 gene promoter region in cancerous tissue, in combination with the predominance of methylation in normal tissue, may serve as a prognostic factor in CRC patients.
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Affiliation(s)
- Jan Dimberg
- Department of Natural Science and Biomedicine, University College of Health Sciences, Jönköping, Sweden
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Abstract
Tumour-derived adhesion factor (TAF) has been shown to be associated with breast, prostate and colorectal cancer (CRC), acting as tumour suppressor or tumour promoter by mechanisms not as yet understood. Here, we comparatively analyzed the expression profile of TAF in plasma, tumour and paired normal tissue from patients with CRC. In addition, we investigated the relationship between TAF and systemic inflammation, mirrored by the elevation of interleukin-6 (IL-6) and TAF levels in plasma. Levels of TAF and IL-6 were determined by ELISA. Immunohistochemistry was performed to investigate the site of TAF expression. We also used a TaqMan system to investigate a TAF single nucleotide polymorphism (rs2041437) with a potential effect on CRC. TAF protein levels were significantly (P<0.001) higher in colorectal tumours than in normal tissue, and were increased in patients with Dukes' stages B and C compared to A. Immunohistochemistry revealed heterogeneous TAF expression mainly in the epithelial cells of the cancer and normal tissue. The plasma TAF level was reduced in CRC patients compared with the controls (P=0.002), independent of the inflammatory marker IL-6. Regarding genotype and allelic distributions, significant differences between CRC patients and control subjects or associations between clinical characteristics and TAF levels in tissue and plasma were not observed. In conclusion, altered TAF protein expression in cancer tissue may be a potential biomarker in colorectal carcinogenesis. Further research exploring the regulation of TAF is required to evaluate whether TAF is linked to clinical outcome.
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Affiliation(s)
- Anders Mälarstig
- Atherosclerosis Research Unit, Department of Medicine, Karolinska Institute, SE-171 76 Stockholm, Sweden
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Magnusson C, Wullt M, Löfgren S, Iveroth P, Akerlund T, Matussek A. Ribotyping of Clostridium difficile strains associated with nosocomial transmission and relapses in a Swedish County. APMIS 2012; 121:153-7. [PMID: 23030627 PMCID: PMC3597974 DOI: 10.1111/j.1600-0463.2012.02950.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Accepted: 06/22/2012] [Indexed: 02/04/2023]
Abstract
Clostridium difficile is an emerging threat in hospital environments. To analyse possible transmission and to distinguish between relapse and reinfection a collection of C. difficile isolates, sampled from 162 consecutive episodes of C. difficile infection, were PCR ribotyped. Two ribotypes (001 and 012) were prone to cause nosocomial acquisition. Moreover, ribotype 001 had a tendency to cause relapses as almost one in two patients with this ribotype had one or more relapses. By using PCR ribotyping strains inclined to cause relapses and strains associated with hospital transmission might be detected. This enables optimized hygiene measures and may improve the choice of treatment regimen.
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Affiliation(s)
- Cecilia Magnusson
- Department of Infectious Diseases, County Hospital Ryhov, Jönköping, Sweden
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Futter MN, Löfgren S, Köhler SJ, Lundin L, Moldan F, Bringmark L. Simulating dissolved organic carbon dynamics at the swedish integrated monitoring sites with the integrated catchments model for carbon, INCA-C. Ambio 2011; 40:906-19. [PMID: 22201005 PMCID: PMC3357881 DOI: 10.1007/s13280-011-0203-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Surface water concentrations of dissolved organic carbon ([DOC]) are changing throughout the northern hemisphere due to changes in climate, land use and acid deposition. However, the relative importance of these drivers is unclear. Here, we use the Integrated Catchments model for Carbon (INCA-C) to simulate long-term (1996-2008) streamwater [DOC] at the four Swedish integrated monitoring (IM) sites. These are unmanaged headwater catchments with old-growth forests and no major changes in land use. Daily, seasonal and long-term variations in streamwater [DOC] driven by runoff, seasonal temperature and atmospheric sulfate (SO₄(2-)) deposition were observed at all sites. Using INCA-C, it was possible to reproduce observed patterns of variability in streamwater [DOC] at the four IM sites. Runoff was found to be the main short-term control on [DOC]. Seasonal patterns in [DOC] were controlled primarily by soil temperature. Measured SO₄(2-) deposition explained some of the long-term [DOC] variability at all sites.
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Affiliation(s)
- M. N. Futter
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, 750 07 Uppsala, Sweden
| | - S. Löfgren
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, 750 07 Uppsala, Sweden
| | - S. J. Köhler
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, 750 07 Uppsala, Sweden
| | - L. Lundin
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, 750 07 Uppsala, Sweden
| | - F. Moldan
- IVL Svenska Miljöinstitutet AB, Box 21060, 100 31 Stockholm, Sweden
| | - L. Bringmark
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, 750 07 Uppsala, Sweden
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Köhler SJ, Zetterberg T, Futter MN, Fölster J, Löfgren S. Assessment of uncertainty in long-term mass balances for acidification assessments: a MAGIC model exercise. Ambio 2011; 40:891-905. [PMID: 22201004 PMCID: PMC3357874 DOI: 10.1007/s13280-011-0208-7] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Long-term (1860-2010) catchment mass balance calculations rely on models and assumptions which are sources of uncertainty in acidification assessments. In this article, we report on an application of MAGIC to model acidification at the four Swedish IM forested catchments that have been subject to differing degrees of acidification stress. Uncertainties in the modeled mass balances were mainly associated with the deposition scenario and assumptions about sulfate adsorption and soil mass. Estimated base cation (BC) release rates (weathering) varied in a relatively narrow range of 47-62 or 42-47 meq m(-2) year(-1), depending on assumptions made about soil cation exchange capacity and base saturation. By varying aluminum solubility or introducing a dynamic weathering feedback that allowed BC release to increase at more acidic pHs, a systematic effect on predicted changes in acid neutralizing capacity (ΔANC ca. 10-41 μeq l(-1)) and pH (ca. ΔpH = 0.1-0.6) at all sites was observed. More robust projections of future changes in pH and ANC are dependent on reducing uncertainties in BC release rates, the timing, and extent of natural acidification through BC uptake by plants, temporal changes in soil element pools, and fluxes of Al between compartments.
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Affiliation(s)
- S. J. Köhler
- Department of Aquatic Sciences and Assessment, SLU, Uppsala, P.O. Box 7050, Sweden
| | - T. Zetterberg
- Department of Aquatic Sciences and Assessment, SLU, Uppsala, P.O. Box 7050, Sweden
- IVL Svenska Miljöinstitutet AB, P.O. Box 21060, 100 31 Stockholm, Sweden
| | - M. N. Futter
- Department of Aquatic Sciences and Assessment, SLU, Uppsala, P.O. Box 7050, Sweden
| | - J. Fölster
- Department of Aquatic Sciences and Assessment, SLU, Uppsala, P.O. Box 7050, Sweden
| | - S. Löfgren
- Department of Aquatic Sciences and Assessment, SLU, Uppsala, P.O. Box 7050, Sweden
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Christiansson M, Melin S, Matussek A, Löfgren S, Söderman J. MLVA is a valuable tool in epidemiological investigations of Escherichia coli and for disclosing multiple carriage. ACTA ACUST UNITED AC 2011; 43:579-86. [DOI: 10.3109/00365548.2011.568953] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Dimberg J, Ström K, Löfgren S, Zar N, Hugander A, Matussek A. Expression of the serine protease inhibitor serpinA3 in human colorectal adenocarcinomas. Oncol Lett 2011; 2:413-418. [PMID: 22866096 DOI: 10.3892/ol.2011.280] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Accepted: 01/18/2011] [Indexed: 11/05/2022] Open
Abstract
Proteases facilitate a number of steps in cancer progression. The serine protease inhibitors (serpins) are a protein superfamily with inhibitory activity against proteases. One of these proteases, serpinA3, appears to have a multifaceted role and is associated with inflammatory reactions, Alzheimer's disease, malignant melanoma and gastric cancer. To gain insight into the potential effect of serpinA3 on colorectal cancer (CRC) we determined whether serpinA3 is altered in colorectal tissue or plasma in CRC patients. Collectively, by using ELISA we noted a significantly lower serpinA3 level in cancer tissue compared to paired normal tissue. Moreover, the tumour serpinA3 level tended to be higher in disseminated disease as compared to localised disease. No significant difference in the plasma levels of serpinA3 was noted in the patients when compared to the controls. However, plasma serpinA3 and C-reactive protein (marker of inflammation) in the CRC patients and controls were significantly positively correlated. To confirm and detect localization of serpinA3 expression, immunohistochemistry was performed. Immunohistochemistry showed heterogeneous immunoreactivity in epithelial cells in the cancer and normal tissue and extracellular staining within bands of stroma as well as in some stromal cells. A Taq Man system was used to investigate a single nucleotide polymorphism (rs4934) in the serpinA3 signal sequence gene with supposed effect on serpinA3 secretion and expression. No significant difference was observed between CRC and control subjects regarding genotype and allelic distributions, nor were associations noted between clinical characteristics and serpinA3 levels. In conclusion, an altered serpinA3 concentration in CRC tissue may be a potential biomarker in CRC progression. SerpinA3 concentrations in plasma appear to be correlated with systemic inflammation, but do not appear to be specific to CRC patients. Further studies are warranted to improve our understanding of the role of serpinA3 in CRC.
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Affiliation(s)
- Jan Dimberg
- Department of Natural Science and Biomedicine, University College of Health Sciences
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Tammelin A, Karell AC, Kriisa M, Aspevall O, Nilsson P, Qvarfordt I, Iversen KU, Andersson R, Ahrén C, Melander E, Fraenkel CJ, Lytsy B, Isaksson B, Samuelsson A, Lundholm R, Johansson A, Norén T, Ripa T, Karlsson L, Löfgren S, Matussek A, Wahlberg T, Oberg S, Eliasson I, Sundin CG, Andersson E, Granström R, Danielsson A, Lindblom A, Ryding U, Blad L, Boman H, Karlman K, Heimer D, Hambraeus A, Ransjö U. [Clothes in health care. Don't mix identification and hygiene routines]. Lakartidningen 2011; 108:453. [PMID: 21744609] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Wågsäter D, Löfgren S, Zar N, Hugander A, Dimberg J. Pigment epithelium-derived factor expression in colorectal cancer patients. Cancer Invest 2010; 28:872-7. [PMID: 20504225 DOI: 10.3109/07357901003735675] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Pigment epithelium-derived factor (PEDF) is a potent inhibitor of angiogenesis and has been proposed to be a tumor suppressor in a variety of tumors. Limited reports exist of PEDF in colorectal cancer (CRC). We noted a 55% lower plasma level (p < .001) of PEDF in the CRC patient group (1.6 μg/mL) than in of a healthy control group (3.6 μg/mL). A single nucleotide polymorphism (rs1136287, T>C) was screened. In the control group, the CC genotype showed 30% lower PEDF plasma levels compared with the TT genotype (p < .01), whereas the CRC patients failed to show any association regarding these genotypes.
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Affiliation(s)
- Dick Wågsäter
- Atherosclerosis Research Unit, Department of Medicine, Karolinska Institute, Stockholm, Sweden
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Löfgren S, Ljunggren G, Brommels M. No ticking time bomb: hospital utilisation of 28,528 hip fracture patients in Stockholm during 1998-2007. Scand J Public Health 2010; 38:418-25. [PMID: 20413586 DOI: 10.1177/1403494810370232] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
AIM The objectives were to show how utilisation of hospital care among hip fracture patients has changed in Stockholm during 1998-2007 and to explore changes in some demographic and clinical characteristics as well as surgical treatment of the patients. METHODS The Stockholm County Patient Care Register covers all public healthcare services in the region. All patients from 1998 to 2007 who had a hospital stay due to a hip fracture (ICD-10 codes S72.0, S72.1, S72.2) and had undergone hip surgery (NCSP codes NFB09-99 and NFJ39-99) were identified. Number of hospital stays, surgical procedures, deaths, and length of hospital stay were categorised according to age and sex, and presented as absolute and relative numbers year by year. Age- and sex-standardised annual incidence figures were calculated. RESULTS A total of 28,528 patients (72.2% women, 27.8% men) were hospitalised due to a hip fracture. The annual numbers decreased during the study period in all age groups except men 85 years and older. The age- and sex-standardised hip fracture incidence fell with 16%. Mortality was slightly reduced. The acute care hospital length of stay fell with 1.4 days to 7.0 days, and the whole hospital episode increased by 1.4 days to 17.3 days. CONCLUSIONS Despite a continued increase in the numbers of elderly during 1998-2007, the number of patients and their utilisation of hospital services remained constant and showed a marked decrease in women over 65 years of age. Comparisons with national statistics indicate that the results can be generalised to Sweden.
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Affiliation(s)
- S Löfgren
- Medical Management Centre, Department of Learning, Informatics, Management and Ethics, Karolinska Institute, Stockholm, Sweden.
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Börjesson S, Matussek A, Melin S, Löfgren S, Lindgren P. Methicillin-resistantStaphylococcus aureus(MRSA) in municipal wastewater: an uncharted threat? J Appl Microbiol 2010; 108:1244-51. [DOI: 10.1111/j.1365-2672.2009.04515.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Melin S, Melin S, Haeggman S, Melin S, Haeggman S, Olsson-Liljequist B, Sjölund M, Nilsson PA, Isaksson B, Löfgren S, Matussek A. Epidemiological typing of methicillin-resistant Staphylococcus aureus (MRSA): spa typing versus pulsed-field gel electrophoresis. ACTA ACUST UNITED AC 2010; 41:433-9. [PMID: 19431050 DOI: 10.1080/00365540902962749] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Molecular methods based on sequencing, such as spa typing, have facilitated epidemiological typing of bacterial isolates compared to the gold standard pulsed-field gel electrophoresis (PFGE), a technically more demanding method. We studied methicillin-resistant Staphylococcus aureus (MRSA) in 4 Swedish counties from 2003 through 2005, and compared spa typing and PFGE results to epidemiological data. Of 280 MRSA isolates, 91 were from sporadic cases and 189 were associated with 35 outbreaks. A total of 50 spa types and 74 PFGE patterns were detected. 60 (21%) of the MRSA isolates carried the Panton-Valentine leukocidin (PVL) genes. 12 of the PVL-positive MRSA were healthcare associated. 25 of the spa types and 31 of the PFGE patterns were associated with outbreaks. In 1 of the outbreaks we found isolates with different but closely related spa types, and in 6 of the outbreaks we observed isolates with different but related PFGE patterns. In this low-endemic setting, with outbreaks limited in time and place, we found spa typing to be a useful tool for epidemiological typing of MRSA, due to its rapidity, accessibility, ease of use, and standardized nomenclature.
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Affiliation(s)
- Sara Melin
- Department of Clinical Microbiology, Division of Laboratory Medicine, County Hospital Ryhov, Jönköping, Sweden
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