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- Casswall, TH, et al.
(författare)
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Bovine anti-Helicobacter pylori antibodies for oral immunotherapy
- 2002
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Ingår i: Scandinavian Journal of Gastroenterology. - : Informa UK Limited. - 1502-7708 .- 0036-5521. ; 37:12, s. 1380-1385
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Tidskriftsartikel (refereegranskat)abstract
- Background: Passive immunization with orally administered antibodies against specific pathogens has previously been successfully used therapeutically in both animal and human studies. We employed a similar strategy for experimental treatment of mice infected with the gastric pathogen Helicobacter pylori. Methods: An anti-H. pylori bovine colostral hyperimmune immunoglobulin preparation (BIC) was generated and its efficacy was tested in different in vitro experiments, such as binding to the Lewis(b) blood group antigen, inhibition of adherence of H. pylori to human gastric mucosa tissue sections in situ and in a haemagglutination assay. The BIC preparation was also given in the drinking water to H. pylori-infected mice. Results: An inhibition of 95% of the binding of H. pylori to Lewis(b) glycoconjugate was observed in vitro. Furthermore, a blocking activity of almost 90% was observed when the BIC was preincubated with H. pylori bacteria. Finally, the BIC preparation inhibited the haemagglutination of H. pylori and human red blood cells. Seven of 40 (17.5%) mice remained infected in the treatment group as compared with 25 of 45 (55.5%) in the control group. Hence, the cure rate was 66%, P = < 0.001. The mean number of colonies in the antibody-treated mice where eradication was not successful was also reduced (P < 0.05). In trials using FVB/N transgenic Lewis(b) expressing mice, a cure rate of 50%-66% was observed. Conclusion: Bovine colostral antibodies against H. pylori can be generated in high titres, inhibit binding in vitro and can eradicate or reduce the number of bacteria in infected mice.
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- Evengard, B., et al.
(författare)
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Healthy ecosystems for human and animal health : Science diplomacy for responsible development in the Arctic The Nordic Centre of Excellence, Clinf.org (Climate-change effects on the epidemiology of infectious diseases and the impacts on Northern societies)
- 2021
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Ingår i: Polar Record. - : Cambridge University Press (CUP). - 0032-2474 .- 1475-3057. ; 57
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Forskningsöversikt (refereegranskat)abstract
- Climate warming is occurring most rapidly in the Arctic, which is both a sentinel and a driver of further global change. Ecosystems and human societies are already affected by warming. Permafrost thaws and species are on the move, bringing pathogens and vectors to virgin areas. During a five-year project, the CLINF - a Nordic Center of Excellence, funded by the Nordic Council of Ministers, has worked with the One Health concept, integrating environmental data with human and animal disease data in predictive models and creating maps of dynamic processes affecting the spread of infectious diseases. It is shown that tularemia outbreaks can be predicted even at a regional level with a manageable level of uncertainty. To decrease uncertainty, rapid development of new and harmonised technologies and databases is needed from currently highly heterogeneous data sources. A major source of uncertainty for the future of contaminants and infectious diseases in the Arctic, however, is associated with which paths the majority of the globe chooses to follow in the future. Diplomacy is one of the most powerful tools Arctic nations have to influence these choices of other nations, supported by Arctic science and One Health approaches that recognise the interconnection between people, animals, plants and their shared environment at the local, regional, national and global levels as essential for achieving a sustainable development for both the Arctic and the globe.
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- Fazel, S, et al.
(författare)
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Risk factors for criminal recidivism in older sexual offenders
- 2006
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Ingår i: Sexual abuse : a journal of research and treatment. - : SAGE Publications. - 1079-0632. ; 18:2, s. 159-167
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Tidskriftsartikel (refereegranskat)abstract
- Sexual offenders constitute a substantial proportion of the older male prison population. Recent research findings, with potential consequences for risk management, indicate that recidivism risk might be lower in older sexual offenders. We followed up all adult male sexual offenders released from prison in Sweden during 1993-1997 (N =1,303) for criminal reconviction for an average of 8.9 years. We studied rates of repeat offending (sexual and any violent) by four age bands (<25, 25-39, 40-54, and 55 +years), and examined whether risk factors for recidivism remained stable across age groups. Results showed that recidivism rates decreased significantly in older age bands. In addition, the effect of certain risk factors varied by age band. These findings on recidivism rates in older sexual offenders concur with studies from the United Kingdom, United States, and Canada and may suggest some generalizability in Western settings. Further research is needed to address underlying mechanisms.
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- Galetin, Aleksandra, et al.
(författare)
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Membrane transporters in drug development and as determinants of precision medicine
- 2024
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Ingår i: NATURE REVIEWS DRUG DISCOVERY. - 1474-1776 .- 1474-1784.
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Forskningsöversikt (refereegranskat)abstract
- The effect of membrane transporters on drug disposition, efficacy and safety is now well recognized. Since the initial publication from the International Transporter Consortium, significant progress has been made in understanding the roles and functions of transporters, as well as in the development of tools and models to assess and predict transporter-mediated activity, toxicity and drug-drug interactions (DDIs). Notable advances include an increased understanding of the effects of intrinsic and extrinsic factors on transporter activity, the application of physiologically based pharmacokinetic modelling in predicting transporter-mediated drug disposition, the identification of endogenous biomarkers to assess transporter-mediated DDIs and the determination of the cryogenic electron microscopy structures of SLC and ABC transporters. This article provides an overview of these key developments, highlighting unanswered questions, regulatory considerations and future directions. Significant progress has been made in understanding the influence of membrane transporters in drug disposition and response. Here, the International Transporter Consortium provides an update on the current status of membrane transporters in drug development and regulatory requirements, discusses recent scientific advances in the field and highlights future directions and unanswered questions.
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- Hartley, M G, et al.
(författare)
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Protection afforded by heat shock protein 60 from Francisella tularensis is due to copurified lipopolysaccharide.
- 2004
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Ingår i: Infection and Immunity. - 0019-9567 .- 1098-5522. ; 72:7, s. 4109-13
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Tidskriftsartikel (refereegranskat)abstract
- Heat shock proteins (Hsps) have attracted significant attention as protective antigens against a range of diseases caused by bacterial pathogens. However, more recently there have been suggestions that the protective response is due to the presence of peptide components other than Hsps. We have shown that mice that had been immunized with purified heat shock protein 60 (Hsp60) isolated from Francisella tularensis were protected against a subsequent challenge with some strains of the bacterium. However, this protection appeared to be due to trace amounts of lipopolysaccharide, which were too low to be detected by using the Limulus amoebocyte lysate assay. This finding raises the possibility that the protection afforded by other bacterial Hsp60 proteins may be due to trace quantities of polysaccharide antigens carried by and acting in conjunction with the Hsps.
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- Sjostedt, S., et al.
(författare)
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A computational method for estimating continuum factor models
- 1997
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Ingår i: Computational Statistics. ; 12:4, s. 481-495
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Tidskriftsartikel (refereegranskat)abstract
- This paper focuses on the computational aspects of a forecasting method for multiple time series, the so called continuum factor models proposed by Sjostett (1996). Within the vector autoregressive framework, linear transformations of the vector process are considered, revealing possible simplifying structures, as hidden factors catching the important forecasting information. The factors are solutions to nonlinear constrained optimization problems. These optimization problems have a special structure that the solution procedure takes advantage of. The main ideas are to transform the optimization problem to problems with only one constraint, using the Lagrange equations and the Gauss-Newton method. Methods to get initial vectors to the Gauss-Newton method are also proposed. Properties of the computational method are analyzed and discussed. It is also proved that the continuum factors are consistently estimated when sample covariance matrices are used.
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- Titball, Richard W, et al.
(författare)
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Biosafety and selectable markers.
- 2007
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Ingår i: Ann N Y Acad Sci. - 0077-8923. ; 1105, s. 405-17
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| 35. |
- Uhlén, Mathias, et al.
(författare)
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The human secretome
- 2019
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Ingår i: Science Signaling. - : American Association for the Advancement of Science (AAAS). - 1945-0877 .- 1937-9145. ; 12:609
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Tidskriftsartikel (refereegranskat)abstract
- The proteins secreted by human cells (collectively referred to as the secretome) are important not only for the basic understanding of human biology but also for the identification of potential targets for future diagnostics and therapies. Here, we present a comprehensive analysis of proteins predicted to be secreted in human cells, which provides information about their final localization in the human body, including the proteins actively secreted to peripheral blood. The analysis suggests that a large number of the proteins of the secretome are not secreted out of the cell, but instead are retained intracellularly, whereas another large group of proteins were identified that are predicted to be retained locally at the tissue of expression and not secreted into the blood. Proteins detected in the human blood by mass spectrometry-based proteomics and antibody-based immuno-assays are also presented with estimates of their concentrations in the blood. The results are presented in an updated version 19 of the Human Protein Atlas in which each gene encoding a secretome protein is annotated to provide an open-access knowledge resource of the human secretome, including body-wide expression data, spatial localization data down to the single-cell and subcellular levels, and data about the presence of proteins that are detectable in the blood.
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