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Sandberg M, Whitman W, Evans R, Badlani G, Matthews C, Walker S. Mechanistic insights from genomic analysis of interstitial cystitis/bladder pain syndrome patient bladder tissue. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00806-0] [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: 02/12/2023]
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Hamburger A, Xu H, Ando Y, Asuelime G, Bolanos-Ibarra K, Daris M, Deshmukh K, DiAndreth B, Fisher F, Gabrelow G, Imun M, Ju D, Lee WH, Li C, Liu E, Martin A, Mcelvain M, Mock JY, Nampe D, Naradikian M, Sandberg M, Shafaattalab S, Sharma S, Tokatlian T, Toledo-Warshaviak D, Wang X, Wong LM, Kamb A. 122 A powerful, precise targeting system controlled by tumor deletions transforms CEA and MSLN CAR-T cells into tumor-selective agents. J Immunother Cancer 2021. [DOI: 10.1136/jitc-2021-sitc2021.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BackgroundMesothelin (MSLN) and carcinoembryonic antigen (CEA) are classic tumor-associated antigens that are expressed in many solid tumors including the majority of lung, colorectal and pancreatic cancers. However, both MSLN and CEA are also expressed in vital normal organs. This normal expression creates risk of serious inflammation for CEA- or MSLN-directed therapeutics. To date all active CEA- or MSLN-targeted investigational therapeutics have been toxic when administered systemically.MethodsWe have developed a safety mechanism to protect normal tissues without abrogating sensitivity of cytotoxic T cells directed at MLSN(+) or CEA(+) tumors in a subset of patients with defined loss of heterozygosity (LOH) in their tumors (figure 1). This dual-receptor (Tmod< sup >TM</sup >) system exploits common LOH at the HLA locus in cancer cells, allowing T cells to recognize the difference between tumor and normal tissue.1 2 T cells engineered with specific Tmod constructs contain: (i) a MSLN- or CEA-activated CAR; and, (ii) an inhibitory receptor gated by HLA-A*02. HLA-A*02 binding blocks T cell cytotoxicity, even in the presence of MSLN or CEA. The Tmod system is designed to treat heterozygous HLA class I patients, selected for HLA LOH. When HLA-A*02 is absent from tumors selected for LOH, the CARs are predicted to mediate potent killing of the A*02(-) malignant cells.ResultsThe Tmod system robustly protects surrogate normal cells even in mixed-cell populations in vitro while mediating robust cytotoxicity of tumor cells in xenograft models (see example in figure 2). The MSLN CAR can also be paired with other blockers, supporting scalability of the approach to patients beyond HLA-A*02 heterozygotes.Abstract 122 Figure 1Illustration of the Tmod T cell engaging with tumor cells with somatic loss of HLA-A*02 and with normal cells.Abstract 122 Figure 2Bioluminescence measurements show the average difference between the size of the MSLN(+)A*02(+) ‘normal’ graft compared to the MSLN(+)A*02(-) tumor graft on the two flanks of mice after T cell infusion. Both tumor and normal grafts are destroyed by CAR-Ts (CAR-3 and M5 benchmark) while the MSLN Tmod cells kill the tumor but not the normal graft.ConclusionsThe Tmod mechanism may provide an alternative route to leverage solid-tumor antigens such as MSLN and CEA in safer, more effective ways than previously possible.ReferencesHamburger AE, DiAndreth B, Cui J, et al. Engineered T cells directed at tumors with defined allelic loss. Mol Immunol 2020;128:298–310.Hwang MS, Mog BJ, Douglass J, et al. Targeting loss of heterozygosity for cancer-specific immunotherapy. Proc Natl Acad Sci U S A 2021;118(12):e2022410118.
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Mergenthaler M, Paredes S, Müller P, Müller C, Filipp S, Sandberg M, Hertzberg JB, Adiga VP, Brink M, Fuhrer A. Ultrahigh vacuum packaging and surface cleaning for quantum devices. Rev Sci Instrum 2021; 92:025121. [PMID: 33648100 DOI: 10.1063/5.0034574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 01/30/2021] [Indexed: 06/12/2023]
Abstract
We describe design, implementation, and performance of an ultra-high vacuum (UHV) package for superconducting qubit chips or other surface sensitive quantum devices. The UHV loading procedure allows for annealing, ultra-violet light irradiation, ion milling, and surface passivation of quantum devices before sealing them into a measurement package. The package retains vacuum during the transfer to cryogenic temperatures by active pumping with a titanium getter layer. We characterize the treatment capabilities of the system and present measurements of flux tunable qubits with an average T1 = 84 µs and T2 echo=134μs after vacuum-loading these samples into a bottom loading dilution refrigerator in the UHV-package.
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Affiliation(s)
- M Mergenthaler
- IBM Quantum, IBM Research Europe-Zurich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland
| | - S Paredes
- IBM Quantum, IBM Research Europe-Zurich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland
| | - P Müller
- IBM Quantum, IBM Research Europe-Zurich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland
| | - C Müller
- IBM Quantum, IBM Research Europe-Zurich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland
| | - S Filipp
- IBM Quantum, IBM Research Europe-Zurich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland
| | - M Sandberg
- IBM Quantum, IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598, USA
| | - J B Hertzberg
- IBM Quantum, IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598, USA
| | - V P Adiga
- IBM Quantum, IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598, USA
| | - M Brink
- IBM Quantum, IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598, USA
| | - A Fuhrer
- IBM Quantum, IBM Research Europe-Zurich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland
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Ahlström G, Axmon A, Sandberg M, Flygare Wallén E. Health care utilisation among older people with Down syndrome compared to specific medical guidelines for health surveillance: a Swedish national register study. BMC Health Serv Res 2020; 20:949. [PMID: 33059705 PMCID: PMC7559468 DOI: 10.1186/s12913-020-05800-7] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 10/05/2020] [Indexed: 11/10/2022] Open
Abstract
Background Specific medical guidelines for health surveillance exist for people with Down syndrome (DS) since 25 years but knowledge of adherence to the guidelines is lacking. The guidelines were developed to avoid unnecessary suffering from preventable conditions. The aims of the study were to investigate 1) planned health care visits in relation to the co-morbidities described in specific medical guidelines as a measure of adherence, 2) unplanned health care visits as a measure of potentially unmet health care needs and 3) gender differences in health care utilisation among older people with DS. Methods This register-based study includes people with DS (n = 472) from a Swedish national cohort of people with intellectual disability (n = 7936), aged 55 years or more, and with at least one support according to the disability law, in 2012. Data on inpatient and outpatient specialist health care utilisation were collected from the National Patient Register for 2002–2012. Results A total of 3854 inpatient and outpatient specialist health care visits were recorded during the 11 years, of which 54.6% (n = 2103) were planned, 44.0% (n = 1695) unplanned and 1.4% (n = 56) lacked information. More than half of the visits, 67.0% (n = 2582) were outpatient health care thus inpatient 33% (n = 1272). Most planned visits (29.4%, n = 618) were to an ophthalmology clinic, and most unplanned visits to an internal medicine clinic (36.6%, n = 621). The most common cause for planned visits was cataract, found at least once for 32.8% in this cohort, followed by arthrosis (8.9%), epilepsy (8.9%) and dementia (6.6%). Pneumonia, pain, fractures and epilepsy each accounted for at least one unplanned visit for approximately one-fourth of the population (27.1, 26.9, 26.3 and 19.7% respectively). Men and women had similar numbers of unplanned visits. However, women were more likely to have visits for epilepsy or fractures, and men more likely for pneumonia. Conclusions Increased awareness of existing specific medical guidelines for people with DS is vital for preventive measures. The relatively few planned health care visits according to the medical guidelines together with a high number of unplanned visits caused by conditions which potentially can be prevented suggest a need of improved adherence to medical guidelines.
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Affiliation(s)
- G Ahlström
- Department of Health Sciences, Faculty of Medicine, Lund University, Box 157, 221 00, Huddinge, Sweden.
| | - A Axmon
- EPI@LUND (Epidemiology, Population studies, and Infrastructures at Lund University), Lund University, 221 00, Stockholm, Sweden
| | - M Sandberg
- Department of Health Sciences, Faculty of Medicine, Lund University, Box 157, 221 00, Huddinge, Sweden
| | - E Flygare Wallén
- Department of Neurobiology, Care Sciences and Society (NVS), H1 Division of Family Medicine and Primary Care, Karolinska Institutet (KI), Alfred Nobels allé 10, 141 83, Huddinge, Sweden.,Academic Primary Health Care Center, Solnavägen 1e, 113 65, Stockholm, Sweden
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Satgé D, Axmon A, Trétarre B, Sandberg M, Ahlström G. Cancer diagnoses among older people with intellectual disability compared with the general population: a national register study. J Intellect Disabil Res 2020; 64:579-588. [PMID: 32395851 DOI: 10.1111/jir.12734] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 06/07/2019] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Cancer occurrence among older people with intellectual disability (ID) is poorly documented, so we investigated the frequency and distribution of cancer in older people with ID compared with the general population. METHOD People with ID who were ≥55years old and alive at the end of 2012 (n = 7936; ID cohort) were identified through a national register of people with ID who received social services in Sweden to optimise the individual's opportunity for good living conditions in daily life. An equally large reference cohort from the general population (gPop cohort) was matched by year of birth and sex. Cancer diagnoses registered in inpatient and outpatient specialist care were collected for 2002-2012 from the ID cohort and compared with diagnoses in the gPop cohort. RESULTS A lower total cancer frequency was observed in the ID cohort, which contained 555 cancers, compared with 877 cancers in the gPop cohort [odds ratio (OR): 0.63; 95% confidence interval (CI): 0.57-0.70]. Women accounted for 60% of cancers in the ID cohort. Breast and gynaecological organ cancers had similar or slightly lower frequencies in the ID cohort than in the general population, with breast OR of 0.95, uterine corpus OR of 1.00 and ovary OR of 0.73. Surprisingly, cancer frequency of the digestive organs (OR: 0.67), including the colon (OR: 0.82), was lower than in the general population. Cancers of the prostate (OR: 0.25), urinary tract (OR: 0.42) and lung were less frequent than in the general population. CONCLUSIONS Cancer was diagnosed less frequently in the ID cohort than in the gPop cohort. However, cancers of the breast and colon-rectum remain frequent in people with ID and therefore warrant prevention policies, monitoring and screening similar to those of the general population.
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Affiliation(s)
- D Satgé
- Department of Biostatistics, Institut Universitaire de Recherche Clinique (IURC) Team Cancer Epidemiology, Montpellier, France
- Oncodéfi, Montpellier, France
| | - A Axmon
- EPI@LUND (Epidemiology, Population studies, and Infrastructures at Lund University), Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - B Trétarre
- Department of Biostatistics, Institut Universitaire de Recherche Clinique (IURC) Team Cancer Epidemiology, Montpellier, France
- Oncodéfi, Montpellier, France
- Registre des Tumeurs de l'Hérault, Montpellier, France
| | - M Sandberg
- Department of Health Sciences, Faculty of Medicine, Lund University, Lund, Sweden
| | - G Ahlström
- Department of Health Sciences, Faculty of Medicine, Lund University, Lund, Sweden
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Ahlström G, Axmon A, Sandberg M, Hultqvist J. Specialist psychiatric health care utilization among older people with intellectual disability - predictors and comparisons with the general population: a national register study. BMC Psychiatry 2020; 20:70. [PMID: 32066421 PMCID: PMC7027029 DOI: 10.1186/s12888-020-02491-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 02/10/2020] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND People with intellectual disability (ID) face considerable barriers to accessing psychiatric health care, thus there is a risk for health disparity. The aims of the present study were 1) to compare specialist psychiatric health care utilization among older people with ID to that with their age peers in the general population, taking into account demographic factors and co-morbidities associated with specialist psychiatric health care utilization and 2) to determine a model for prediction of specialist psychiatric health care utilization among older people with ID. MATERIAL AND METHODS We identified a national cohort of people with ID (ID cohort), aged 55+ years and alive at the end of 2012 (n = 7936), and a referent cohort from the general population (gPop cohort) one-to-one matched by year of birth and sex. Data on utilization of inpatient and outpatient specialist psychiatric health care, as well as on co-morbidities identified in either psychiatric or somatic specialist health care, were collected from the National Patient Register for the time period 2002-2012. RESULTS After adjusting for sex, age, specialist psychiatric health care utilization the previous year, and co-morbidities, people in the ID cohort still had an increased risk of visits to unplanned inpatient (relative risk [RR] 1.95), unplanned outpatient (RR 1.59), planned inpatient (RR 2.02), and planned outpatient (RR 1.93) specialist psychiatric health care compared with the general population. Within the ID cohort, increasing age was a predictor for less health care, whereas psychiatric health care the previous year predicted increased risk of health care utilization the current year. As expected, mental and behavioral disorders predicted increased risk for psychiatric health care. Furthermore, episodic and paroxysmal disorders increased the risk of planned psychiatric health care. CONCLUSIONS Older people with ID have a high need for psychiatric specialist health care due to a complex pattern of diagnoses. Further research needs to investigate the conditions that can explain the lesser psychiatric care in higher age groups. There is also a need of research on health care utilization among people with ID in the primary health care context. This knowledge is critical for policymakers' plans of resources to meet the needs of these people.
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Affiliation(s)
- G Ahlström
- Department of Health Sciences, Faculty of Medicine, Lund University, Lund, Sweden.
| | - A Axmon
- EPI@LUND (Epidemiology, Population studies, and Infrastructures at Lund University), Lund University, Lund, Sweden
| | - M Sandberg
- Department of Health Sciences, Faculty of Medicine, Lund University, Lund, Sweden
| | - J Hultqvist
- Department of Health Sciences, Faculty of Medicine, Lund University, Lund, Sweden
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Axmon A, Ahlström G, Sandberg M. Falls resulting in health care among older people with intellectual disability in comparison with the general population. J Intellect Disabil Res 2019; 63:193-204. [PMID: 30407691 PMCID: PMC7379981 DOI: 10.1111/jir.12564] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 09/25/2018] [Accepted: 10/21/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Falls are common among older people with intellectual disability (ID) and are also a major contributor to injuries in this population. Yet, fall characteristics have only been sparsely studied, and the results are inconsistent. The aim of the present study was to investigate type of falls, places where they occurred and activities that caused them, as well as health outcomes and health utilisation patterns after falls, among older people with ID in comparison with their age peers in the general population. METHODS We established an administrative cohort of people with ID aged 55 years, or more, and alive at the end of 2012 (ID cohort; n = 7936). A cohort from the general population, one-to-one matched by sex and year of birth, was used as referents. Data regarding fall-induced health care episodes in inpatient and outpatient specialist care were collected from the National Patient Register for the period 2002-2012. RESULTS With the exception of falls from one level to another (i.e. fall on and from stairs and steps, ladder and scaffolding; fall from, out of or through building or structure; fall from tree or cliff and diving or jumping into water; or other fall from one level to another), people in the ID cohort were more likely to fall and fall more often than those in the general population cohort. Falls during a vital activity (e.g. attending to personal hygiene or eating) were twice as common among people with ID compared with the general population. When falling, people with ID were more likely to injure their head and legs but less likely to sustain injuries to the thorax and elbow/forearm. They were more likely to have superficial injuries, open wounds and fractures but less likely to have dislocations, sprain and strains. Fall-related health care visits among people with ID were more likely to be in inpatient care and be unplanned. People with ID were also more likely than those in the general population to have a readmission within 30 days. CONCLUSIONS People with ID are more likely to require specialist care after a fall and also more likely to obtain injuries to the head, compared with the general population. This is important to consider when taking preventive measures to reduce falls and fall-related injuries.
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Affiliation(s)
- A. Axmon
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Faculty of MedicineLund UniversityLundSweden
- Department of Health Sciences, Faculty of MedicineLund UniversityLundSweden
| | - G. Ahlström
- Department of Health Sciences, Faculty of MedicineLund UniversityLundSweden
| | - M. Sandberg
- Department of Health Sciences, Faculty of MedicineLund UniversityLundSweden
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Sunde GA, Kottmann A, Heltne JK, Sandberg M, Gellerfors M, Krüger A, Lockey D, Sollid SJM. Standardised data reporting from pre-hospital advanced airway management - a nominal group technique update of the Utstein-style airway template. Scand J Trauma Resusc Emerg Med 2018; 26:46. [PMID: 29866144 PMCID: PMC5987657 DOI: 10.1186/s13049-018-0509-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [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: 02/09/2018] [Accepted: 05/09/2018] [Indexed: 12/31/2022] Open
Abstract
Background Pre-hospital advanced airway management with oxygenation and ventilation may be vital for managing critically ill or injured patients. To improve pre-hospital critical care and develop evidence-based guidelines, research on standardised high-quality data is important. We aimed to identify which airway data were most important to report today and to revise and update a previously reported Utstein-style airway management dataset. Methods We recruited sixteen international experts in pre-hospital airway management from Australia, United States of America, and Europe. We used a five-step modified nominal group technique to revise the dataset, and clinical study results from the original template were used to guide the process. Results The experts agreed on a key dataset of thirty-two operational variables with six additional system variables, organised in time, patient, airway management and system sections. Of the original variables, one remained unchanged, while nineteen were modified in name, category, definition or value. Sixteen new variables were added. The updated dataset covers risk factors for difficult intubation, checklist and standard operating procedure use, pre-oxygenation strategies, the use of drugs in airway management, airway currency training, developments in airway devices, airway management strategies, and patient safety issues not previously described. Conclusions Using a modified nominal group technique with international airway management experts, we have updated the Utstein-style dataset to report standardised data from pre-hospital advanced airway management. The dataset enables future airway management research to produce comparable high-quality data across emergency medical systems. We believe this approach will promote research and improve treatment strategies and outcomes for patients receiving pre-hospital advanced airway management. Trial registration The Regional Committee for Medical and Health Research Ethics in Western Norway exempted this study from ethical review (Reference: REK-Vest/2017/260). Electronic supplementary material The online version of this article (10.1186/s13049-018-0509-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- G A Sunde
- Norwegian Air Ambulance Foundation, Drøbak, Norway. .,Dept. of Anaesthesia and Intensive Care, Haukeland University Hospital, Bergen, Norway. .,Faculty of Health Sciences, University of Stavanger, Stavanger, Norway.
| | - A Kottmann
- Norwegian Air Ambulance Foundation, Drøbak, Norway.,Faculty of Health Sciences, University of Stavanger, Stavanger, Norway.,Emergency Dept., University Hospital of Lausanne, Lausanne, Switzerland.,Swiss Air Ambulance - Rega, Zürich, Switzerland
| | - J K Heltne
- Dept. of Anaesthesia and Intensive Care, Haukeland University Hospital, Bergen, Norway.,Dept. of Medical Sciences, University of Bergen, Bergen, Norway
| | - M Sandberg
- Air Ambulance Dept., Oslo University Hospital, Oslo, Norway.,Faculty of Medicine, University of Oslo, Oslo, Norway
| | - M Gellerfors
- Karolinska Institutet, Dept. of Clinical Science and Education, Section of Anaesthesiology and Intensive Care, Stockholm, Sweden.,Swedish Air Ambulance (SLA), Mora, Sweden.,Dept. of Anaesthesiology and Intensive Care, Södersjukhuset, Stockholm, Sweden
| | - A Krüger
- Norwegian Air Ambulance Foundation, Drøbak, Norway.,Dept. of Emergency Medicine and Pre-hospital Services, St. Olavs Hospital, Trondheim, Norway
| | - D Lockey
- Faculty of Health Sciences, University of Stavanger, Stavanger, Norway.,London's Air Ambulance, Bartshealth NHS Trust, London, UK
| | - S J M Sollid
- Norwegian Air Ambulance Foundation, Drøbak, Norway.,Faculty of Health Sciences, University of Stavanger, Stavanger, Norway.,Air Ambulance Dept., Oslo University Hospital, Oslo, Norway
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Hansson I, Sandberg M, Habib I, Lowman R, Engvall EO. Knowledge gaps in control of Campylobacter for prevention of campylobacteriosis. Transbound Emerg Dis 2018; 65 Suppl 1:30-48. [PMID: 29663680 DOI: 10.1111/tbed.12870] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [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: 12/31/2016] [Indexed: 01/08/2023]
Abstract
Campylobacteriosis is an important, worldwide public health problem with numerous socio-economic impacts. Since 2015, approximately 230,000 cases have been reported annually in Europe. In the United States, Australia and New Zealand, campylobacteriosis is the most commonly reported disease. Poultry and poultry products are considered important sources of human infections. Poultry meat can become contaminated with Campylobacter during slaughter if live chickens are intestinal carriers. Campylobacter spp. can be transferred from animals to humans through consumption and handling of contaminated food products, with fresh chicken meat being the most commonly implicated food type. Regarding food-borne disease, the most important Campylobacter species are Campylobacter jejuni and Campylobacter coli. In humans, clinical signs of campylobacteriosis include diarrhoea, abdominal pain, fever, headache, nausea and vomiting. Most cases of campylobacteriosis are sporadic and self-limiting, but there are post-infection complications, for example, Guillain-Barrés syndrome. This review summarizes an analysis undertaken by the DISCONTOOLS group of experts on campylobacteriosis. Gaps were identified in: (i) knowledge of true number of infected humans; (ii) mechanisms of pathogenicity to induce infection in humans; (iii) training to prevent transfer of Campylobacter from raw to ready-to-eat food; (iv) development of effective vaccines; (v) understanding transmission routes to broiler flocks; (vi) knowledge of bacteriocins, bacteriophages and antimicrobial peptides as preventive therapies; (vii) ration formulation as an effective preventive measure at a farm level; (viii) development of kits for rapid detection and quantification of Campylobacter in animals and food products; and (ix) development of more effective antimicrobials for treatment of humans infected with Campylobacter. Some of these gaps are relevant worldwide, whereas others are more related to problems encountered with Campylobacter in industrialized countries.
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Affiliation(s)
- I Hansson
- Department of Biomedical Sciences, Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - M Sandberg
- Food Safety, Veterinary Issues & Risk Analysis Danish Agriculture & Food Council, Copenhagen, Denmark
| | - I Habib
- School of Veterinary and Life Sciences, Murdoch University, Perth, WA, Australia
| | - R Lowman
- Independent Veterinary Public Health Research Specialist, Ottawa, ON, Canada
| | - E O Engvall
- Department of Biomedical Sciences, Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
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Sandberg M, Jakobsson U, Midlöv P, Kristensson J. HEALTH ECONOMIC EVALUATION OF CASE MANAGEMENT FOR FRAIL OLDER PEOPLE: EFFECTS OF AN RCT. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1897] [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: 11/12/2022] Open
Affiliation(s)
- M. Sandberg
- Department of Health Sciences, Lund University, Lund, Sweden,
| | - U. Jakobsson
- Department of Clinical Sciences Malmo, Lund University, Lund, Sweden
| | - P. Midlöv
- Department of Clinical Sciences Malmo, Lund University, Lund, Sweden
| | - J. Kristensson
- Department of Health Sciences, Lund University, Lund, Sweden,
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Sandberg M, Ahlström G, Axmon A, Kristensson J. OLDER PEOPLE WITH INTELLECTUAL DISABILITY: AN 11-YEAR REGISTER STUDY OF HEALTHCARE USE PATTERNS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M. Sandberg
- Department of Health Sciences, Lund University, Lund, Sweden
| | - G. Ahlström
- Department of Health Sciences, Lund University, Lund, Sweden
| | - A. Axmon
- Department of Health Sciences, Lund University, Lund, Sweden
| | - J. Kristensson
- Department of Health Sciences, Lund University, Lund, Sweden
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Rehn M, Hyldmo PK, Magnusson V, Kurola J, Kongstad P, Rognås L, Juvet LK, Sandberg M. Reply from the authors: SSAI guideline on pre-hospital airway management: keep it safe and simple. Acta Anaesthesiol Scand 2017; 61:127-128. [PMID: 27709608 DOI: 10.1111/aas.12817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- M. Rehn
- The Norwegian Air Ambulance Foundation; Drøbak Norway
- Department of Health Studies; University of Stavanger; Stavanger Norway
- Division of Emergencies and Critical Care; Department of Anaesthesia; Oslo University Hospital; Oslo Norway
| | - P. K. Hyldmo
- The Norwegian Air Ambulance Foundation; Drøbak Norway
- Department of Anaesthesiology and Intensive Care; Sørlandet Hospital; Kristiansand Norway
| | - V. Magnusson
- Department of Anaesthesia and Intensive Care Medicine; Landspitali University Hospital; Reykjavik Iceland
| | - J. Kurola
- Centre for Pre-Hospital Emergency Care; Kuopio University Hospital; Kuopio Finland
| | - P. Kongstad
- Department of Pre-hospital Care and Disaster Medicine in Region of Skåne; Lund Sweden
| | - L. Rognås
- Pre-Hospital Critical Care Service; Aarhus University Hospital; Aarhus Denmark
- The Danish Air Ambulance; Aarhus Denmark
| | - L. K. Juvet
- Norwegian Institute of Public Health; Oslo Norway
- University College of Southeast Norway; Notodden Norway
| | - M. Sandberg
- Air Ambulance Department; Oslo University Hospital; Oslo Norway
- University of Oslo; Oslo Norway
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Sandberg M, Dahl J, Lindegaard L, Pedersen J. Compliance/non-compliance with biosecurity rules specified in the Danish Quality Assurance system (KIK) and Campylobacter- positive broiler flocks 2012 and 2013. Poult Sci 2017; 96:184-191. [DOI: 10.3382/ps/pew277] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 01/26/2016] [Accepted: 07/01/2016] [Indexed: 12/22/2022] Open
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Nour ES, Bondarevs A, Huss P, Sandberg M, Gong S, Willander M, Nur O. Low-Frequency Self-Powered Footstep Sensor Based on ZnO Nanowires on Paper Substrate. Nanoscale Res Lett 2016; 11:156. [PMID: 27000024 PMCID: PMC4801824 DOI: 10.1186/s11671-016-1373-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Accepted: 03/15/2016] [Indexed: 05/04/2023]
Abstract
In this work, we design and fabricate a wireless system with the main operating device based on zinc oxide (ZnO) nanowires. The main operating device is based on piezoelectric nanogenerator (NG) achieved using ZnO nanowires grown hydrothermally on paper substrate. The fabricated NG is capable of harvesting ambient mechanical energy from various kinds of human motion, e.g., footsteps. The harvested electric output has been used to serve as a self-powered pressure sensor. Without any storage device, the signal from a single footstep has successfully triggered a wireless sensor node circuit. This study demonstrates the feasibility of using ZnO nanowire piezoelectric NG as a low-frequency self-powered sensor, with potential applications in wireless sensor networks.
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Affiliation(s)
- E S Nour
- Department of Science and Technology (ITN), Linköping University, Campus Norrkoping, SE-60 174, Norrköping, Sweden.
| | - A Bondarevs
- Department of Science and Technology (ITN), Linköping University, Campus Norrkoping, SE-60 174, Norrköping, Sweden
| | - P Huss
- Department of Science and Technology (ITN), Linköping University, Campus Norrkoping, SE-60 174, Norrköping, Sweden
| | - M Sandberg
- Department of Science and Technology (ITN), Linköping University, Campus Norrkoping, SE-60 174, Norrköping, Sweden
- Printed Electronics, Acreo AB, P.O. Box 787, 60117, Norrköping, Sweden
| | - S Gong
- Department of Science and Technology (ITN), Linköping University, Campus Norrkoping, SE-60 174, Norrköping, Sweden
| | - M Willander
- Department of Science and Technology (ITN), Linköping University, Campus Norrkoping, SE-60 174, Norrköping, Sweden
| | - O Nur
- Department of Science and Technology (ITN), Linköping University, Campus Norrkoping, SE-60 174, Norrköping, Sweden
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Rehn M, Hyldmo PK, Magnusson V, Kurola J, Kongstad P, Rognås L, Juvet LK, Sandberg M. Scandinavian SSAI clinical practice guideline on pre-hospital airway management. Acta Anaesthesiol Scand 2016; 60:852-64. [PMID: 27255435 PMCID: PMC5089575 DOI: 10.1111/aas.12746] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 04/13/2016] [Accepted: 04/24/2016] [Indexed: 12/17/2022]
Abstract
Background The Scandinavian society of anaesthesiology and intensive care medicine task force on pre‐hospital airway management was asked to formulate recommendations following standards for trustworthy clinical practice guidelines. Methods The literature was systematically reviewed and the grading of recommendations assessment, development and evaluation (GRADE) system was applied to move from evidence to recommendations. Results We recommend that all emergency medical service (EMS) providers consider to: apply basic airway manoeuvres and airway adjuncts (good practice recommendation); turn unconscious non‐trauma patients into the recovery position when advanced airway management is unavailable (good practice recommendation); turn unconscious trauma patients to the lateral trauma position while maintaining spinal alignment when advanced airway management is unavailable [strong recommendation, low quality of evidence (QoE)]. We suggest that intermediately trained providers use a supraglottic airway device (SAD) or basic airway manoeuvres on patients in cardiac arrest (weak recommendation, low QoE). We recommend that advanced trained providers consider using an SAD in selected indications or as a rescue device after failed endotracheal intubation (ETI) (good practice recommendation). We recommend that ETI should only be performed by advanced trained providers (strong recommendation, low QoE). We suggest that videolaryngoscopy is considered for ETI when direct laryngoscopy fails or is expected to be difficult (weak recommendation, low QoE). We suggest that advanced trained providers apply cricothyroidotomy in ‘cannot intubate, cannot ventilate’ situations (weak recommendation, low QoE). Conclusion This guideline for pre‐hospital airway management includes a combination of techniques applied in a stepwise fashion appropriate to patient clinical status and provider training.
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Affiliation(s)
- M. Rehn
- The Norwegian Air Ambulance Foundation Drøbak Norway
- London's Air Ambulance Barts Health Trust London UK
- Field of Pre‐hospital Critical Care University of Stavanger Stavanger Norway
| | - P. K. Hyldmo
- The Norwegian Air Ambulance Foundation Drøbak Norway
- Department of Anaesthesiology and Intensive Care Sørlandet Hospital Kristiansand Norway
| | - V. Magnusson
- Department of Anaesthesia and Intensive Care Medicine Landspitali University Hospital Reykjavik Iceland
| | - J. Kurola
- Centre for Pre‐hospital Emergency Care Kuopio University Hospital Kuopio Finland
| | - P. Kongstad
- Department of Pre‐hospital Care and Disaster Medicine Region of Skåne Lund Sweden
| | - L. Rognås
- Pre‐hospital Critical Care Service Aarhus University Hospital Aarhus Denmark
- The Danish Air Ambulance Aarhus Denmark
| | - L. K. Juvet
- Norwegian Institute of Public Health Oslo Norway
- University College of Southeast Norway Notodden Norway
| | - M. Sandberg
- Air Ambulance Department Oslo University Hospital Oslo Norway
- University of Oslo Oslo Norway
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16
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Ng N, Sandberg M, Ahlström G. Prevalence of older people with intellectual disability in Sweden: a spatial epidemiological analysis. J Intellect Disabil Res 2015; 59:1155-1167. [PMID: 26306552 DOI: 10.1111/jir.12219] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 01/20/2015] [Revised: 07/22/2015] [Accepted: 07/29/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND The expected increase in longevity of individuals with intellectual disabilities (ID) in many countries of the world is a direct result of medical and social advances, which have also extended the longevity of the general population. It is important to assess the need for social services for people with ID across different administrative levels to ensure sufficient resources are allocated to where they are most needed. This study estimates the annual prevalence of older people with ID from 2004 to 2012 and in different counties and municipalities in Sweden, by sex and age group; identifies proxy indicators related to the care of older people with ID in different counties in 2012 in Sweden and analyses the spatial distribution and clustering of municipalities with a high prevalence of older people with ID. METHODS Individuals with ID were identified through the national register based on the Swedish Act concerning Support and Service for Persons with Certain Functional Impairments (the LSS act) and the national death register. This study focuses on older individuals aged 55+ during the period of 2004-2012. The estimated prevalence was calculated at the county and municipality level and plotted on a municipality-level map. Moran's I statistics was used to identify any spatial clustering of municipalities with a large number of individuals with ID. RESULTS The prevalence of ID among older individuals aged 55+ in Sweden increased from 2004 to 2012. The prevalence was consistently higher among men, and the gender gap increased slightly in recent years. Age-specific prevalence estimates showed ID to be higher in younger age groups, and the gender gap decreased in older age groups. The prevalence was higher in northern counties in Sweden (over 500 individuals per 100 000 population aged 55+). Higher prevalence areas were clustered in northern municipalities, whereas municipalities with high prevalence of older individuals with ID in the middle and southern regions of Sweden demonstrated a more widespread distribution. CONCLUSIONS The existence of clusters of counties with a high prevalence of older individuals with ID necessitates further assessment of how resources have been allocated to different counties and municipalities in Sweden. Investigations of the quality of social services provided to individuals with ID across different counties in Sweden are warranted. It is important to ensure that high quality supports are being provided to older individuals with ID in order to grant them the same right to healthy ageing as their counterparts living without ID throughout their life course.
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Affiliation(s)
- N Ng
- Unit of Epidemiology and Global Health, Department of Public Health and Clinical Medicine, Umeå University, Sweden
- Centre for Demographic and Ageing Research, Umeå University, Sweden
| | - M Sandberg
- Department of Health Sciences, Faculty of Medicine, Lund University, Sweden
| | - G Ahlström
- Department of Health Sciences, Faculty of Medicine, Lund University, Sweden
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Jiang X, Sandberg M, Saevarsdottir S, Klareskog L, Alfredsson L, Bengtsson C. AB0323 Patients with Higher Education Present Greater Improvements on Functional Status in Early Rheumatoid Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1420] [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: 11/03/2022]
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18
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Sandberg M, Sørensen L, Steenberg B, Chowdhury S, Ersbøll A, Alban L. Risk factors for Campylobacter colonization in Danish broiler flocks, 2010 to 2011. Poult Sci 2015; 94:447-53. [DOI: 10.3382/ps/peu065] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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19
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Erickson RP, Vissers MR, Sandberg M, Jefferts SR, Pappas DP. Frequency comb generation in superconducting resonators. Phys Rev Lett 2014; 113:187002. [PMID: 25396390 DOI: 10.1103/physrevlett.113.187002] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Indexed: 06/04/2023]
Abstract
We have generated frequency combs spanning 0.5 to 20 GHz in superconducting λ/2 resonators at T=3 K. Thin films of niobium-titanium nitride enabled this development due to their low loss, high nonlinearity, low frequency dispersion, and high critical temperature. The combs nucleate as sidebands around multiples of the pump frequency. Selection rules for the allowed frequency emission are calculated using perturbation theory, and the measured spectrum is shown to agree with the theory. Sideband spacing is measured to be accurate to 1 part in 10(8). The sidebands coalesce into a continuous comb structure observed to cover at least several frequency octaves.
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Affiliation(s)
- R P Erickson
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - M R Vissers
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - M Sandberg
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - S R Jefferts
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - D P Pappas
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
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20
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Sandberg M, Barbaras R, van Vught D, Keijserling C, Dasseux J, Verberne H, Smits L, Dongen G, Stroes E. The effect of labelling apolipoprotein (apo) a-1 with the radio-isotope 89zr on cholesterol mobilization in vitro and in vivo. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.536] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Schroer MD, Kolodrubetz MH, Kindel WF, Sandberg M, Gao J, Vissers MR, Pappas DP, Polkovnikov A, Lehnert KW. Measuring a topological transition in an artificial spin-1/2 system. Phys Rev Lett 2014; 113:050402. [PMID: 25126902 DOI: 10.1103/physrevlett.113.050402] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Indexed: 06/03/2023]
Abstract
We present measurements of a topological property, the Chern number (C_{1}), of a closed manifold in the space of two-level system Hamiltonians, where the two-level system is formed from a superconducting qubit. We manipulate the parameters of the Hamiltonian of the superconducting qubit along paths in the manifold and extract C_{1} from the nonadiabatic response of the qubit. By adjusting the manifold such that a degeneracy in the Hamiltonian passes from inside to outside the manifold, we observe a topological transition C_{1}=1→0. Our measurement of C_{1} is quantized to within 2% on either side of the transition.
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Affiliation(s)
- M D Schroer
- JILA, National Institute of Standards and Technology and The University of Colorado, Boulder, Colorado 80309, USA
| | - M H Kolodrubetz
- Physics Department, Boston University, Boston, Massachusetts 02215, USA
| | - W F Kindel
- JILA, Department of Physics, University of Colorado, Boulder, Colorado 80309, USA
| | - M Sandberg
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - J Gao
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - M R Vissers
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - D P Pappas
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | | | - K W Lehnert
- JILA, National Institute of Standards and Technology and The University of Colorado, Boulder, Colorado 80309, USA and Department of Physics, University of Colorado, Boulder, Colorado 80309, USA
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Rupert AE, Ou Y, Sandberg M, Weber SG. Electroosmotic push-pull perfusion: description and application to qualitative analysis of the hydrolysis of exogenous galanin in organotypic hippocampal slice cultures. ACS Chem Neurosci 2013; 4:838-48. [PMID: 23614879 DOI: 10.1021/cn400082d] [Citation(s) in RCA: 18] [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] [Indexed: 01/27/2023] Open
Abstract
We demonstrate here a method that perfuses a small region of an organotypic hippocampal culture with a solution containing an enzyme substrate, a neuropeptide. Perfusate containing hydrolysis products is continually collected and subsequently analyzed for the products of the enzymatic degradation of the peptide substrate. The driving force for perfusion is an electric field. The fused silica capillaries used as "push" and "pull" or "source" and "collection" capillaries have a ζ-potential that is negative and greater in magnitude than the tissue's ζ-potential. Thus, depending on the magnitudes of particular dimensions, the electroosmotic flow in the capillaries augments the fluid velocity in the tissue. The flow rate is not directly measured; however, we determine it using a finite-element approach. We have determined the collection efficiency of the system using an all d-amino acid internal standard. The flow rates are low, in the nL/min range, and adjustable by controlling the current or voltage in the system. The collection efficiency of the d-amino acid peptide internal standard is variable, increasing with increased current and thus electroosmotic flow rate. The collection efficiency can be rationalized in the context of a Peclet number. Electroosmotic push-pull perfusion of the neuropeptide galanin (gal1-29) through the extracellular space of an organotypic hippocampal culture results in its hydrolysis by ectopeptidase reactions occurring in the extracellular space. The products of hydrolysis were identified by MALDI-MS. Experiments at two levels of current (8-12 μA and 19-40 μA) show that the probability of seeing hydrolysis products (apparently from aminopeptidases) is greater in the Cornu Ammonis area 3 (CA3) than in the Cornu Ammonis area 1 (CA1) in the higher current experiments. In the lower current experiments, shorter peptide products of aminopeptidases (gal13-29 to gal20-19) are seen with greater frequency in CA3 than in CA1 but there is no statistically significant difference for longer peptides (gal3-29 to gal12-29).
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Affiliation(s)
- Amy E. Rupert
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania
15260, United States
| | - Y. Ou
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania
15260, United States
| | - M. Sandberg
- Department
of Medical Biochemistry and Cell Biology, Gothenburg University, Gothenburg, S 405 30 Sweden
| | - S. G. Weber
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania
15260, United States
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23
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Rupert AE, Ou Y, Sandberg M, Weber SG. Assessment of tissue viability following electroosmotic push-pull perfusion from organotypic hippocampal slice cultures. ACS Chem Neurosci 2013; 4:849-57. [PMID: 23639590 PMCID: PMC3656745 DOI: 10.1021/cn4000814] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
We have developed a novel sampling technique that allows both introduction and removal of fluid from the extracellular space of living tissue. This method is based on the fluidics of push-pull perfusion but flow is driven by electroosmosis. We have applied this method to organotypic hippocampal cultures. A source capillary is inserted into the tissue and a collection capillary is in contact with the tissue surface through a thin layer of fluid. A voltage is applied across the proximal ends of source and collection capillary. In the applied field, fluid will move from source, into the tissue, and then be collected. In this process, damage to cells may occur. To understand better what sampling conditions influence damage most, we tested various sampling geometries and applied voltages, quantifying damage 16-24 h later using propidium iodide as a cell death marker. We found that damage correlates with both voltage drop and power dissipated in the tissue, but that voltage drop is a better indicator of damage when comparing models in which capillary arrangement and length are different.
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Affiliation(s)
- Amy E Rupert
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, United States
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24
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Miller A, Dahlberg C, Wen B, Sandberg M, Beisner D, Parker A, Schmedt C, Stinson M, McPate M, Tranter P, Groot-Kormelink P, Gosling M, Dawson-King J, Pan S, Tian SS, Seidel HM, Cooke M. Novel LMW inhibitors of ITPKb block autoimmune disease by promoting calcium-induced T lymphocyte death (P5165). The Journal of Immunology 2013. [DOI: 10.4049/jimmunol.190.supp.68.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Lymphocyte antigen receptor-mediated production of Ins(1,4,5)P3 induces the release of Ca2+ from intracellular stores, resulting in the opening of store-operated Ca2+ (SOC) channels. Mice deficient in inositol(1,4,5)P3-3 kinase B (ITPKb), which converts inositol(1,4,5)P3 (IP3) to inositol(1,3,4,5)P4 (IP4), exhibit a complete block in T cell positive selection. Previous studies demonstrated that IP4 is an inhibitor of SOC channels. To understand the role of ITPKb in mature peripheral lymphocytes, inducible ITPKb-/- mice were generated. Deletion of ITPKb in mature lymphocytes reveals that ITPKb is required for mature T cell function and T-dependent antibody responses. Following antigen receptor activation, the loss of ITPKb leads to enhanced Ca2+ levels and the induction of death effector gene expression resulting in apoptosis. We further demonstrate that IP4 is an inhibitor of open-state Orai1 channels. LMW ITPKb inhibitors were identified using a high-throughput compound screen. Application of ITPKb inhibitors to lymphocytes enhanced Ca2+ responses following antigen receptor stimulation, similar to ITPKb-/- cells. Treatment of mice with ITPKb inhibitors recapitulated the block in T cell development observed in ITPKb-/- mice and inhibited antigen-induced arthritis formation in rats. These data identify ITPKb and IP4 as crucial mediators of lymphocyte development and activation, and suggest that inhibition of ITPKb may provide a novel mechanism to treat autoimmune disease.
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Affiliation(s)
- Andrew Miller
- 1Genomics Institute of the Novartis Research Foundation, San Diego, CA
| | - Carol Dahlberg
- 1Genomics Institute of the Novartis Research Foundation, San Diego, CA
| | - Ben Wen
- 1Genomics Institute of the Novartis Research Foundation, San Diego, CA
| | - Mark Sandberg
- 1Genomics Institute of the Novartis Research Foundation, San Diego, CA
| | - Daniel Beisner
- 1Genomics Institute of the Novartis Research Foundation, San Diego, CA
| | - Albert Parker
- 1Genomics Institute of the Novartis Research Foundation, San Diego, CA
| | - Christian Schmedt
- 1Genomics Institute of the Novartis Research Foundation, San Diego, CA
| | - Monique Stinson
- 1Genomics Institute of the Novartis Research Foundation, San Diego, CA
| | - Mark McPate
- 2Novartis Pharmaceuticals UK Limited, Horsham, United Kingdom
| | - Pamela Tranter
- 2Novartis Pharmaceuticals UK Limited, Horsham, United Kingdom
| | | | - Martin Gosling
- 2Novartis Pharmaceuticals UK Limited, Horsham, United Kingdom
| | | | - Shifeng Pan
- 1Genomics Institute of the Novartis Research Foundation, San Diego, CA
| | - Shin-Shay Tian
- 1Genomics Institute of the Novartis Research Foundation, San Diego, CA
| | - H. Martin Seidel
- 1Genomics Institute of the Novartis Research Foundation, San Diego, CA
| | - Michael Cooke
- 1Genomics Institute of the Novartis Research Foundation, San Diego, CA
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Sollid SJM, Sandberg M, Nakstad A, Bredmose P. Do anaesthesiologists in pre-hospital care need concomitant clinical practice? Scand J Trauma Resusc Emerg Med 2013. [PMCID: PMC3665530 DOI: 10.1186/1757-7241-21-s1-s7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Sandberg M, Pettersson U, Henriksnäs J, Jansson L. The α2-adrenoceptor antagonist yohimbine normalizes increased islet blood flow in GK rats: a model of type 2 diabetes. Horm Metab Res 2013; 45:252-4. [PMID: 23015611 DOI: 10.1055/s-0032-1323843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Overexpression of α2A-adrenoceptors contributes to type 2 diabetes in GK rats. We aimed to investigate if α2-adrenoceptor inhibition affected islet blood flow in these rats. Anesthetized GK and Wistar-F rats were given the α2-adrenoceptor inhibitor yohimbine (2.5 mg/kg BW) intravenously. The GK rats had higher blood glucose and serum insulin concentrations than WF rats. Yohimbine affected neither of these values in WF rats, but decreased blood glucose and increased serum insulin concentrations in GK rats. Total pancreatic and islet blood flows, measured with microspheres, were increased in GK when compared to WF rats. Yohimbine affected none of the blood flow values in WF rats, whereas islet blood flow in GK rats was reduced to values similar to those seen in WF rats. Overexpression of α2-adrenoceptors may contribute to the increased islet blood flow seen in GK rats, and may be eligible for pharmacologic intervention.
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Affiliation(s)
- M Sandberg
- Department of Medical cell Biology, Uppsala University, Uppsala, Sweden.
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Lehmann A, Hagberg H, Huxtable RJ, Sandberg M. Reduction of brain taurine: Effects on neurotoxic and metabolic actions of kainate. Neurochem Int 2012; 10:265-74. [PMID: 20501095 DOI: 10.1016/0197-0186(87)90099-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/1986] [Accepted: 09/18/1986] [Indexed: 11/28/2022]
Abstract
The effects of chronic administration of 2-guanidinoethane sulfonic acid on the levels of intra- and extracellular amino acids in the rat hippocampus were studied. The tissue content of taurine was selectively reduced by almost one third after 9 days of peroral administration of 1% 2-guanidinoethane sulfonate. Extracellular levels of amino acids were monitored with the brain microdialysis method. The taurine concentration in the extracellular fluid was depressed in relation to the decrease in intracellular taurine. Unexpectedly, extracellular (but not intracellular) glutamate was doubled in 2-guanidinoethane sulfonate treated animals. The kainic acid evoked release of taurine was suppressed in the 2-guanidinoethane sulfonate group, whereas the kainate stimulated efflux of glutamate was elevated after 2-guanidinoethane sulfonate administration. The acute metabolic effects of kainate were studied by measuring the efflux of the adenosine triphosphate breakdown products hypoxanthine, xanthine, inosine and adenosine. No differences were found between control and 2-guanidinoethane sulfonate treated rats with respect to basal or kainic acid evoked release of purine catabolites. Also, the neuronal loss caused by kainate injection into the hippocampus was not modified by 2-guanidinoethane sulfonate treatment, suggesting that endogenous taurine does not affect these responses. We conclude that chronic administration of 2-guanidinoethane sulfonate does not sensitize central neurons to the metabolic and toxic actions of kainate.
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Affiliation(s)
- A Lehmann
- Institute of Neurobiology, University of Göteborg, Göteborg, Sweden; Department of Zoophysiology, University of Göteborg, Göteborg, Sweden
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Pettersson US, Sandberg M, Jansson L. Two-week treatment with the β₃-adrenoceptor antagonist SR59230A normalizes the increased pancreatic islet blood flow in type 2 diabetic GK rats. Diabetes Obes Metab 2012; 14:960-2. [PMID: 22564532 DOI: 10.1111/j.1463-1326.2012.01616.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Revised: 04/12/2012] [Accepted: 05/02/2012] [Indexed: 12/01/2022]
Abstract
The Goto-Kakizaki (GK) rat, a type 2 diabetes model, has increased pancreatic islet and white adipose tissue (WAT) blood flow, and this can be normalized by acute administration of SR59230A, a β₃ -adrenoceptor antagonist. We now implanted osmotic pumps which allowed a constant release of saline or SR59230A (0.6 mg/kg × day) for 2 weeks. A decrease in islet blood flow was seen also after 2 weeks of continuous SR59230A treatment in the GK rat. However, no improvement in glucose tolerance was seen in the GK rats. Neither did SR59230A affect insulin secretion from isolated islets in vitro. WAT blood flow was not affected by the 2-week SR59230A treatment. Thus, the increased islet blood flow seen in the GK rat can be normalized for up to 2 weeks, which opens the possibilities for further studies on the long-term functional role on the islet blood flow increase in this type 2 diabetes model.
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Tang S, Hartman M, Yun E, Sandberg M, Chia K, Czene K, Verkooijen H. 319 Clinical Dilemmas in Bilateral Breast Cancer. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)70385-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wilson CM, Duty T, Sandberg M, Persson F, Shumeiko V, Delsing P. Photon generation in an electromagnetic cavity with a time-dependent boundary. Phys Rev Lett 2010; 105:233907. [PMID: 21231466 DOI: 10.1103/physrevlett.105.233907] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2010] [Revised: 11/03/2010] [Indexed: 05/30/2023]
Abstract
We report the observation of photon generation in a microwave cavity with a time-dependent boundary condition. Our system is a microfabricated quarter-wave coplanar waveguide cavity. The electrical length of the cavity is varied by using the tunable inductance of a superconducting quantum interference device. It is measured at a temperature significantly less than the resonance frequency. When the length is modulated at approximately twice the static resonance frequency, spontaneous parametric oscillations of the cavity field are observed. Time-resolved measurements of the dynamical state of the cavity show multiple stable states. The behavior is well described by theory. Our results may be considered a preliminary step towards demonstrating the dynamical Casimir effect.
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Affiliation(s)
- C M Wilson
- Microtechnology and Nanoscience, Chalmers University of Technology, S-41296 Göteborg, Sweden
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Kongtorp RT, Stene A, Andreassen PA, Aspehaug V, Graham DA, Lyngstad TM, Olsen AB, Olsen RS, Sandberg M, Santi N, Wallace C, Breck O. Lack of evidence for vertical transmission of SAV 3 using gametes of Atlantic salmon, Salmo salar L., exposed by natural and experimental routes. J Fish Dis 2010; 33:879-888. [PMID: 21039607 DOI: 10.1111/j.1365-2761.2010.01190.x] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Pancreas disease (PD) is an important cause of losses in farmed salmonids in Norway, the United Kingdom and Ireland. As the spread of salmonid alphavirus (SAV), the causal agent, to naïve populations is of major concern to the farming industry, it is important to uncover the transmission routes of the virus. This study was conducted to investigate the potential for vertical transmission of SAV subtype 3. Progeny of broodstock with signs of late-stage PD and persistent RT-PCR signals for SAV were followed from fertilization to smoltification in an experimental facility. Fertilized ova were either not disinfected or taken through one of three different disinfection regimes. Also, ova and milt from uninfected broodfish from a different population were exposed to a cell-cultured strain of SAV 3 immediately before fertilization to simulate a viraemic phase in parent fish. A group of uninfected controls were also included in the study. Fertilized ova from bath exposed and negative control groups were double disinfected. Following fertilization, experimental fish went through a normal freshwater phase. However, fry were stressed at first feeding to enhance replication of possibly latent virus. Smoltification was induced by an artificial light regime, and experimental fish were followed to the late smoltification phase. Selected samples were investigated by real-time RT-PCR for SAV, by histology for evidence of PD and by serology for neutralising antibodies against SAV. All analysed samples of progeny were negative. This result shows that SAV 3 is not readily transmitted vertically from parents to offspring. Additional negative PCR results from salmon sampled in commercial hatcheries support these findings. Also, recent studies have shown that risk factors for the horizontal transmission route explain the vast majority of PD outbreaks in Norway. It is concluded that if it happens at all, vertical transmission is of minor importance in the spread of SAV 3.
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Affiliation(s)
- R T Kongtorp
- National Veterinary Institute, Oslo and Bergen, Norway
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Mead S, Linehan J, Beck J, Caine D, Gandhi S, Wadsworth JDF, Joiner S, Gallujipali D, Hyare H, Lees A, Holton J, Sandberg M, Revesz T, Carswell C, Warren JD, Collinge J, Wood N. PATU2 Novel truncation mutation of PRNP causes chronic diarrhoea, sensory neuropathy and autonomic failure associated with prion protein deposition in the cerebral blood vessels and small bowel. Journal of Neurology, Neurosurgery & Psychiatry 2010. [DOI: 10.1136/jnnp.2010.226340.31] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
Removal of the spleen in albino rats free from Bartonella muris infection is followed by an increased elimination of copper in the feces, which commences 2 weeks after splenectomy. This is associated with a persistent negative copper balance. An increased retention of iron occurs during a period of 4 to 6 weeks after splenectomy with a return of the iron metabolism to normal after this period. No disturbance in creatine or creatinine metabolism occurs. The uric acid amount is unchanged. There is an increase in the retention of nitrogen, which is first noted 3 weeks after splenectomy. The spleen is essential for the utilization of copper in the body.
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Affiliation(s)
- M Sandberg
- Laboratory Division, Montefiore Hospital, New York
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Sandberg M, Perla D, Marmorston-Gottesman J. STUDIES ON BARTONELLA MURIS ANEMIA : VIII. CHANGES IN THE CHEMICAL CONSTITUENTS OF THE BLOOD DURING THE ANEMIA. ACTA ACUST UNITED AC 2010; 57:81-93. [PMID: 19870123 PMCID: PMC2132214 DOI: 10.1084/jem.57.1.81] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
1. The blood chemistry of normal adult rats and of splenectomized adult rats suffering with Bartonella muris anemia has been studied. 2. Non-protein nitrogen rises with the increase in severity of the anemia. Total serum proteins, serum albumin and serum globulin decrease slightly. Uric acid remains unchanged. 3. Serum chloride concentration remains unchanged, but the concentration of chlorides in the blood increases. 4. An acidosis as estimated by the carbon dioxide-combining capacity of the blood is observed at the height of the infection. 5. The blood sugar decreases and the liver glycogen is depleted in rats with a hemoglobin content of the blood of 10 per cent. 6. Total fats and fatty acids are increased at the height of the anemia. Total cholesterol, the lipoid phosphorus and lecithin are diminished in amount. 7. These changes result from the infection or the anemia. Splenectomy itself plays no part in the changes observed in the chemical constituents of the blood in Bartonella muris anemia of adult albino rats.
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Affiliation(s)
- M Sandberg
- Laboratory Division of Montefiore Hospital, New York
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Abayneh T, Toft N, Mikalsen AB, Brun E, Sandberg M. Evaluation of histopathology, real-time PCR and virus isolation for diagnosis of infectious salmon anaemia in Norwegian salmon using latent class analysis. J Fish Dis 2010; 33:529-532. [PMID: 20298446 DOI: 10.1111/j.1365-2761.2010.01139.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Affiliation(s)
- T Abayneh
- Faculty of Veterinary Medicine, Addis Ababa University, Debre-zeit, Ethiopia
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Jansen MD, Taksdal T, Wasmuth MA, Gjerset B, Brun E, Olsen AB, Breck O, Sandberg M. Salmonid alphavirus (SAV) and pancreas disease (PD) in Atlantic salmon, Salmo salar L., in freshwater and seawater sites in Norway from 2006 to 2008. J Fish Dis 2010; 33:391-402. [PMID: 20158578 DOI: 10.1111/j.1365-2761.2009.01131.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A cohort study was initiated in the spring of 2006 to investigate epidemiological aspects and pathogenesis of salmonid alphavirus (SAV) subtype 3 infections and pancreas disease (PD). The aims were to assess involvement of the freshwater production phase, the extent and frequency of subclinical infections and to follow PD-affected populations throughout the entire seawater production cycle, as well as investigate possible risk factors for PD outbreaks. Fish groups from 46 different Atlantic salmon freshwater sites in six counties were sampled once prior to seawater transfer and followed onto their seawater sites. A total of 51 Atlantic salmon seawater sites were included, and fish groups were sampled three times during the seawater production phase. SAV subtype 3 was not identified by real-time RT-PCR from samples collected in the freshwater phase, nor were any SAV-neutralizing antibodies or histopathological changes consistent with PD. In the seawater phase, SAV was detected in samples from 23 of 36 (63.9%) studied sites located within the endemic region. No SAV subtype 3 was detected in samples from seawater sites located outside the endemic region. The cumulative incidence of PD during the production cycle amongst sites with SAV detected was 87% (20 of 23 sites). Average fish weight at time of PD diagnosis ranged from 461 to 5978 g, because of a wide variation in the timing of disease occurrence throughout the production cycle. Mortality levels following a PD diagnosis varied greatly between populations. The mean percentage mortality was 6.9% (+/-7.06) (range 0.7-26.9), while the mean duration of increased mortality following PD diagnosis was 2.8 months (+/-1.11) (range 1-6).
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Affiliation(s)
- M D Jansen
- Norwegian School of Veterinary Science, Centre for Epidemiology and Biostatistics, Oslo, Norway.
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Persson F, Wilson CM, Sandberg M, Johansson G, Delsing P. Excess dissipation in a single-electron box: the Sisyphus resistance. Nano Lett 2010; 10:953-957. [PMID: 20155965 DOI: 10.1021/nl903887x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We present measurements of the ac response of a single-electron box (SEB). We apply a radio frequency signal with a frequency larger than the tunneling rate and drive the system out of equilibrium. We observe much more dissipation in the SEB then one would expect from a simple circuit model. We can explain this in terms of a mechanism that we call the Sisyphus resistance. The Sisyphus resistance has a strong gate dependence which can be used for electrometery applications.
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Affiliation(s)
- F Persson
- Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Goteborg, Sweden.
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Abstract
More than 50% of the electrical power needed to treat pulp and paper industry effluents is used for aeration in biological treatment stages. A large share of the oxygen that passes through the wastewater is not consumed and will be found in the off-gas. Energy can be saved by aerating under conditions where the oxygen transfer is most efficient, for example at low concentrations of dissolved oxygen Consider the sludge as an energy source; electricity can be saved by avoiding sludge reduction through prolonged aeration. High oxygen transfer efficiency can be retained by using the oxygen consumption of biosolids. Quantified savings in the form of needed volumes of air while still achieving sufficient COD reduction are presented. The tests have been made in a bubble column with pulp mill process water and sludge from a biological treatment plant. These were supplemented with case studies at three pulp and paper mills.
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Affiliation(s)
- M Sandberg
- Department of Energy, Environmental and Building Technology, Karlstad University, Sweden.
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Sandberg M, Hartman M, Hall P, Czene K. Diagnostic Work-Up of Contralateral Breast Cancers Has Not Improved over Calendar Period. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-09-4011] [Citation(s) in RCA: 0] [Impact Index Per Article: 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
Abstract
Background: Contralateral breast cancer (CBC) is diagnosed in 1-2.6 % of all breast cancer patients directly at diagnosis, after that the risk still remains high (0.7% per year) throughout life of the patient. Breast cancer patients are followed up by palpation and clinical mammography after their diagnosis, partly to be able to diagnose a possible CBC. The aim of this study is to investigate if the diagnostic work-up of patients with breast cancer has improved over the last thirty years and resulted in earlier CBC diagnosis.Materials and Methods: Synchronous contralateral breast cancer is here defined as two cancers occurring maximum 3 months apart, cancers with longer latency time are defined as metachronous. The study population is restricted to patients with maximum three years between the two cancer diagnoses. In this study we used two cohorts; all CBCs in Sweden 1976-2004 (N: 3260), and all CBCs in Stockholm during 1976-2005 (N: 688), the smaller cohort had more detailed information. The study participants were selected from two population-based registers (Sweden Cancer Register and Stockholm Breast Cancer Register). With logistic regression we calculated the odds ratio of being diagnosed synchronously, as compared to metachronously, adjusted for calendar period and age at first diagnosis.Results: The risk of synchronous diagnosis was increased by 27% per each 5-year period, the change was statistically significant. We then investigate if this risk increase by calendar period was due to improved clinical work-up, by including detection mode in the model. We found that the risk estimates for calendar period persisted, thus giving no evidence for improvement of clinical work-up during the study period. This result did not change when stratifying the study population by age at first diagnosis (below/above 55). Next, we instead included adjuvant therapy for the first cancer in the model and the association with calendar period decreased to non-significant levels. We also showed that the proportion of CBCs detected trough clinical work-up has not increased over calendar period (p=0.89), neither when including, nor excluding, screening mammography as part of the work-up. The mean tumour size of the contralateral breast cancer was 16.0 mm and has not decreased over the study period (p:0.62)Discussion: We found an increase in the proportion of synchonous CBCs compared to metachronous over calendar period, this change is not associated with clinical work-up, but with adjuvant therapy. This study gives no indications of any improvement in diagnostic work-up of contralateral breast cancer over the last thirty years. Such an improvement would potentially be very important for survival of the growing population of (first) breast cancer survivors.
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 4011.
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Affiliation(s)
- M. Sandberg
- 1Medical Epidemiology and Biostatistics, Sweden
| | - M. Hartman
- 1Medical Epidemiology and Biostatistics, Sweden
| | - P. Hall
- 1Medical Epidemiology and Biostatistics, Sweden
| | - K. Czene
- 1Medical Epidemiology and Biostatistics, Sweden
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Alderborn A, Sundström J, Soeria-Atmadja D, Sandberg M, Andersson HC, Hammerling U. Genetically modified plants for non-food or non-feed purposes: straightforward screening for their appearance in food and feed. Food Chem Toxicol 2009; 48:453-64. [PMID: 20004226 DOI: 10.1016/j.fct.2009.10.049] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2009] [Revised: 10/06/2009] [Accepted: 10/30/2009] [Indexed: 01/17/2023]
Abstract
Genetically modified (GM) plants aimed at producing food/feed are part of regular agriculture in many areas of the World. Commodity plants have also found application as bioreactors, designated non-food/non-feed GM (NFGM) plants, thereby making raw material for further refinement to industrial, diagnostic or pharmaceutical preparations. Many among them may pose health challenge to consumers or livestock animals, if occurring in food/feed. NFGM plants are typically released into the environment, but are grown under special oversight and any among several containment practices, none of which provide full protection against accidental dispersal. Adventitious admixture with food or feed can occur either through distributional mismanagement or as a consequence of gene flow to plant relatives. To facilitate NFGM surveillance we propose a new mandatory tagging of essentially all such plants, prior to cultivation or marketing in the European Union. The suggested tag--Plant-Made Industrial or Pharmaceutical Products Tag (PMIP-T)--is envisaged to occur as a transgenic silent DNA identifier in host plants and designed to enable technically simple identification and characterisation of any NFGM. Implementation of PMIP-T would permit inexpensive, reliable and high-throughput screening for NFGM specifically. The paper outlines key NFGM prospects and challenges as well as the PMIP-T concept.
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Affiliation(s)
- A Alderborn
- Dept. of Genetics and Pathology, The Rudbeck Laboratory, Uppsala University, SE-75185 Uppsala, Sweden
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Olerud J, Kanaykina N, Vasylovska S, King D, Sandberg M, Jansson L, Kozlova EN. Neural crest stem cells increase beta cell proliferation and improve islet function in co-transplanted murine pancreatic islets. Diabetologia 2009; 52:2594-601. [PMID: 19823803 DOI: 10.1007/s00125-009-1544-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Accepted: 08/26/2009] [Indexed: 12/14/2022]
Abstract
AIMS/HYPOTHESIS Long-term graft survival after islet transplantation to patients with type 1 diabetes is insufficient, necessitating the development of new strategies to enhance transplant viability. Here we investigated whether co-transplantation of neural crest stem cells (NCSCs) with islets improves islet survival and function in normoglycaemic and diabetic mice. METHODS Islets alone or together with NCSCs were transplanted under the kidney capsule to normoglycaemic or alloxan-induced diabetic mice. Grafts were analysed for size, proliferation, apoptosis and insulin release. In diabetic recipients blood glucose levels were examined before and after graft removal. RESULTS In mixed transplants NCSCs actively migrated and extensively associated with co-transplanted pancreatic islets. Proliferation of beta cells was markedly increased and transplants displayed improved insulin release in normoglycaemic mice compared with those receiving islet-alone transplants. Mixed grafts survived successfully and partially restored normoglycaemia in alloxan-induced diabetic mice. CONCLUSIONS/INTERPRETATION Co-grafting of NCSCs with pancreatic islets improved insulin release in mixed transplants and enhanced beta cell proliferation, resulting in increased beta cell mass. This co-transplantation model offers an opportunity to restore neural-islet interactions and improve islet functions after transplantation.
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Affiliation(s)
- J Olerud
- Department of Medical Cell Biology, Uppsala University Biomedical Center, Uppsala, Sweden
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Abstract
BACKGROUND Airway management of entrapped patients is challenging and alternatives to endotracheal intubation with a Macintosh laryngoscope must be considered. In this study, the GlideScope Ranger video laryngoscope has been evaluated as an alternative to standard laryngoscopy. METHODS Eight anaesthesiologists from a Helicopter Emergency Medical Service intubated the trachea of a Laerdal SimMan manikin using the studied laryngoscopes in two scenarios: (A) unrestricted access to the manikin in an ambulance and (B) no access from the head end, simulating an entrapped patient. The time used to secure the airway and the scored level of difficulty were the main variables. RESULTS In scenario A, all anaesthesiologists managed to secure the airway using both techniques within the 60-s time limit. In scenario B, all secured the airway when using the video laryngoscope, while 50% succeeded with endotracheal intubation using the Macintosh laryngoscope. The difference in the success rate was statistically significant (P=0.025). There were no significant differences in the time spent on endotracheal intubation in the two scenarios or between the devices. All stated that the availability of a video laryngoscope would make drug-facilitated intubation a realistic alternative when access to patients is limited. The lack of visual control when using the Macintosh laryngoscope excludes this technique in real-life settings. CONCLUSION This study suggests that the GlideScope Ranger may be merited in situations requiring endotracheal intubation by an experienced intubator in patient entrapment. Further studies are required to clarify whether performance in patients mimics that in a manikin.
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Affiliation(s)
- A R Nakstad
- The Air Ambulance Department, Oslo University Hospital-Ullevål, Sykehusveien 1, Nordbyhagen, Norway
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Abstract
Lymphocyte antigen receptor engagement profoundly changes the cellular content of phosphoinositide lipids and soluble inositol phosphates. Among these, the phosphoinositides phosphatidylinositol 4,5-bisphosphate (PIP2) and phosphatidylinositol 3,4,5-trisphosphate (PIP3) play key signaling roles by acting as pleckstrin homology (PH) domain ligands that recruit signaling proteins to the plasma membrane. Moreover, PIP2 acts as a precursor for the second messenger molecules diacylglycerol and soluble inositol 1,4,5-trisphosphate (IP3), essential mediators of PKC, Ras/Erk, and Ca2+ signaling in lymphocytes. IP3 phosphorylation by IP3 3-kinases generates inositol 1,3,4,5-tetrakisphosphate (IP4), an essential soluble regulator of PH domain binding to PIP3 in developing T cells. Besides PIP2, PIP3, IP3, and IP4, lymphocytes produce multiple other phosphoinositides and soluble inositol phosphates that could have important physiological functions. To aid their analysis, detailed protocols that allow one to simultaneously measure the levels of multiple different phosphoinositide or inositol phosphate isomers in lymphocytes are provided here. They are based on thin layer, conventional and high-performance liquid chromatographic separation methods followed by radiolabeling or non-radioactive metal-dye detection. Finally, less broadly applicable non-chromatographic methods for detection of specific phosphoinositide or inositol phosphate isomers are discussed. Support protocols describe how to obtain pure unstimulated CD4+CD8+ thymocyte populations for analyses of inositol phosphate turnover during positive and negative selection, key steps in T cell development.
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Affiliation(s)
- Karsten Sauer
- The Scripps Research Institute, La Jolla, California
| | | | - Hongying Lin
- University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Mark Sandberg
- Genomics Institute of the Novartis Research Foundation (GNF), San Diego, California
| | - Georg W Mayr
- University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Johansson A, Lau J, Sandberg M, Borg LAH, Magnusson PU, Carlsson PO. Endothelial cell signalling supports pancreatic beta cell function in the rat. Diabetologia 2009; 52:2385-94. [PMID: 19669728 DOI: 10.1007/s00125-009-1485-6] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2008] [Accepted: 07/14/2009] [Indexed: 12/13/2022]
Abstract
AIMS/HYPOTHESIS The proximity of endothelial cells and beta cells in islets by necessity means that they are exposed to each other's products. Whereas islet endothelial cells require signals from beta cells to function properly, endothelin-1, thrombospondin-1 and laminins, among others, have been identified as endothelial-derived molecules, although their full effects on beta cells have not been explored. We tested the hypothesis that islet endothelial-derived products affect beta cell function. METHODS Endothelial cells from rat islets were proliferated and purified. Endothelium-conditioned culture medium (ECCM) was obtained by maintaining the endothelial cells in culture medium. Islet function was evaluated following exposure of cultured islets to standard culture medium or ECCM. Changes in mRNA levels for key beta cell metabolic enzymes were also measured in islets after ECCM exposure. RESULTS Glucose-stimulated insulin release and islet insulin content were markedly enhanced by exposure to ECCM. This was at least partly explained by improved mitochondrial function, as assessed by glucose oxidation and an upregulation of the mitochondrial gene for glycerol-3-phosphate dehydrogenase (mGpdh [also known as Gpd2]), combined with upregulation of the rate-limiting enzyme in the glycolysis, glucokinase, in the islets. The intracellular degradation of insulin was also decreased in the islets. Islet endothelial cells produced laminins, and the positive effects of islet endothelial cells were prevented by addition of a neutralising antibody to the beta1-chain of laminin. Addition of exogenous laminin stimulated islet function. CONCLUSIONS/INTERPRETATION This study provides proof of principle that endothelial cells can affect the function of beta cells in their vicinity and that this is at least partially mediated by laminins.
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Affiliation(s)
- A Johansson
- Department of Medical Cell Biology, Uppsala University, Box 571, SE-751 23 Uppsala, Sweden.
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Sandberg M, Ernerudh J, Berg G, Matthiesen L, Ekerfelt C, Nilsson L, Jenmalm M. Systemic Th1- and Th2-associated chemokines during and after pregnancy in relation to maternal allergic disease. J Reprod Immunol 2009. [DOI: 10.1016/j.jri.2009.06.232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Petterson E, Sandberg M, Santi N. Salmonid alphavirus associated with Lepeophtheirus salmonis (Copepoda: Caligidae) from Atlantic salmon, Salmo salar L. J Fish Dis 2009; 32:477-479. [PMID: 19392684 DOI: 10.1111/j.1365-2761.2009.01038.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- E Petterson
- Norwegian School of Veterinary Science, Oslo, Norway.
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50
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Aunsmo A, Bruheim T, Sandberg M, Skjerve E, Romstad S, Larssen RB. Methods for investigating patterns of mortality and quantifying cause-specific mortality in sea-farmed Atlantic salmon Salmo salar. Dis Aquat Organ 2008; 81:99-107. [PMID: 18924374 DOI: 10.3354/dao01954] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Methods for investigating patterns of mortality and quantifying cause-specific mortality in Atlantic salmon Salmo salar farming were developed. The methods were further used to investigate mortality and patterns of mortality for the first 3 mo after sea transfer in the 2006 year-class autumn smolts (SO) of Norwegian farmed Atlantic salmon. In the study population, which consisted of 20 pens at 10 sites, cause-specific mortality was examined by 11 fish health professionals during 8 visits to each pen. Cause-specific mortality proportions were used to convert crude mortality into cause-specific mortality. Cumulative mortality in the study period was 2.1% in the study population compared with 3.7% for the 2006 year-class SOs in the national database. Of this cumulative mortality, 73 and 59% took place in 20% of the pens in the study and the reference population, respectively. Daily mortality rates in the study population showed a variation from 0 to 2376 per 100,000 fish where the majority of mortality was observed during disease outbreaks. All study pens had periods of low baseline mortality and some pens had no increased mortality during the study period. Of 2088 dead fish examined, 92% (1929 fish) were assigned a specific cause of death, and in 97% of these 1929 fish the investigators reported the given cause of death to be likely or very likely. Ulcers were the main cause of death, accounting for 43% of the assigned mortality, and infectious agents were involved in 64% of the total mortality. The study shows that probable causes of death can be established in Atlantic salmon farming and their contribution to total mortality measured.
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Affiliation(s)
- A Aunsmo
- Norwegian School of Veterinary Science, P.O. Box 8146 Dep, 0033 Oslo, Norway.
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