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1.
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2.
  • Drakvik, E., et al. (författare)
  • Statement on advancing the assessment of chemical mixtures and their risks for human health and the environment
  • 2020
  • Ingår i: Environment International. - 0160-4120. ; 134
  • Tidskriftsartikel (refereegranskat)abstract
    • The number of anthropogenic chemicals, manufactured, by-products, metabolites and abiotically formed transformation products, counts to hundreds of thousands, at present. Thus, humans and wildlife are exposed to complex mixtures, never one chemical at a time and rarely with only one dominating effect. Hence there is an urgent need to develop strategies on how exposure to multiple hazardous chemicals and the combination of their effects can be assessed. A workshop, “Advancing the Assessment of Chemical Mixtures and their Risks for Human Health and the Environment” was organized in May 2018 together with Joint Research Center in Ispra, EU-funded research projects and Commission Services and relevant EU agencies. This forum for researchers and policy-makers was created to discuss and identify gaps in risk assessment and governance of chemical mixtures as well as to discuss state of the art science and future research needs. Based on the presentations and discussions at this workshop we want to bring forward the following Key Messages: • We are at a turning point: multiple exposures and their combined effects require better management to protect public health and the environment from hazardous chemical mixtures. • Regulatory initiatives should be launched to investigate the opportunities for all relevant regulatory frameworks to include prospective mixture risk assessment and consider combined exposures to (real-life) chemical mixtures to humans and wildlife, across sectors. • Precautionary approaches and intermediate measures (e.g. Mixture Assessment Factor) can already be applied, although, definitive mixture risk assessments cannot be routinely conducted due to significant knowledge and data gaps. • A European strategy needs to be set, through stakeholder engagement, for the governance of combined exposure to multiple chemicals and mixtures. The strategy would include research aimed at scientific advancement in mechanistic understanding and modelling techniques, as well as research to address regulatory and policy needs. Without such a clear strategy, specific objectives and common priorities, research, and policies to address mixtures will likely remain scattered and insufficient. © 2019 The Authors
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3.
  • Sujan, A.C., et al. (författare)
  • A Genetically informed study of the associations between maternal age at childbearing and adverse perinatal outcomes
  • 2017
  • Ingår i: Behavior Genetics. - Stockholm : Karolinska Institutet, Dept of Medical Epidemiology and Biostatistics. - 0001-8244. ; 56.
  • Tidskriftsartikel (refereegranskat)abstract
    • We examined associations of maternal age at childbearing (MAC) with gestational age and fetal growth (i.e., birth weight adjusting for gestational age), using two genetically informed designs (cousin and sibling comparisons) and data from two cohorts, a population-based Swedish sample and a nationally representative United States sample. We also conducted sensitivity analyses to test limitations of the designs. The findings were consistent across samples and suggested that, associations observed in the population between younger MAC and shorter gestational age were confounded by shared familial factors; however, associations of advanced MAC with shorter gestational age remained robust after accounting for shared familial factors. In contrast to the gestational age findings, neither early nor advanced MAC was associated with lower fetal growth after accounting for shared familial factors. Given certain assumptions, these findings provide support for a causal association between advanced MAC and shorter gestational age. The results also suggest that there are not causal associations between early MAC and shorter gestational age, between early MAC and lower fetal growth, and between advanced MAC and lower fetal growth.
4.
  • Balducci, C, et al. (författare)
  • Negative impact and positive value in caregiving : Validation of the COPE index in a six-country sample of carers
  • 2008
  • Ingår i: The Gerontologist. - 0016-9013 .- 1758-5341. ; 48:3, s. 276-286
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Purpose: The present study attempts to further validate the COPE Index on a large sample of carers drawn from six European countries. Design and Methods: We used a cross-sectional survey, with approximately 1,000 carers recruited in each of six countries by means of a common standard evaluation protocol. Our saturation recruitment of a designated quota of carers occurred by means of several channels, in identified geographical zones within countries. Interviews were carried out with primary informal carers by use of a common assessment tool. We subjected items of the COPE Index to principal component analysis and we assessed emergent components through the use of Cronbach's alpha reliability procedures. We examined factor components as summative scales for confirmatory correlations with caregiving and psychological variables. Results: Three components emerged, which we identified as the negative impact of caregiving, the positive value of caregiving, and the quality of support for caregiving. Internal consistency was good for negative impact and satisfactory for positive value and quality of support. Negative value was most consistently and strongly correlated with caregiving and psychological variables, although we did find diverse associations between these variables and the COPE Index subscales. Implications: The COPE Index is a brief, first-stage assessment of some sophistication that can enable health and social care professionals to develop appropriately targeted interventions to enhance the positive aspects of the caregiving experience and quality of support, as well as reduce the negative impacts of caregiving. Copyright 2008 by The Gerontological Society of America.</p>
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5.
  • Bushnell, David L., et al. (författare)
  • 90Y-edotreotide for metastatic carcinoid refractory to octreotide
  • 2010
  • Ingår i: Journal of Clinical Oncology. - 0732-183X .- 1527-7755. ; 28:10, s. 1652-1659
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>PURPOSE: Metastatic carcinoid is an incurable malignancy whose symptoms, such as diarrhea and flushing, can be debilitating and occasionally life-threatening. Although symptom relief is available with octreotide, the disease eventually becomes refractory to octreotide, leaving no proven treatment options. The goal of this study was to evaluate the clinical effect of using (90)Y-edotreotide to treat symptomatic patients with carcinoid tumors. PATIENTS AND METHODS: Patients enrolled had metastatic carcinoid, at least one sign/symptom refractory to octreotide, and at least one measurable lesion. Study treatment consisted of three cycles of 4.4 GBq (120 mCi) (90)Y-edotreotide each, once every 6 weeks. RESULTS: Ninety patients were enrolled in the study. Using Southwest Oncology Group tumor response criteria, 67 (74.%) of 90 patients (95% CI, 65.4% to 83.4%) were objectively stable or responded. A statistically significant linear trend toward improvement was demonstrated across all 12 symptoms assessed. Median progression-free survival was significantly greater (P = .03) for the 38 patients who had durable diarrhea improvement than the 18 patients who did not (18.2 v 7.9 months, respectively). Adverse events (AEs) were reported in 96.7% (87 of 90) of patients. These AEs consisted primarily of reversible GI events (76 of 90), which could be caused in part by concomitant administration of amino acid solution given to reduce radiation exposure to the kidneys. There was one case each of grade 3 oliguria and grade 4 renal failure, each lasting 6 days. CONCLUSION: (90)Y-edotreotide treatment improved symptoms associated with malignant carcinoid among subjects with no treatment alternatives. Treatment was well-tolerated and had an acceptable expected AE profile.</p>
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6.
  • Coomer, B.J., et al. (författare)
  • Vacancy-hydrogen complexes in germanium
  • 1999
  • Ingår i: Materials Science & Engineering : B. Solid-state Materials for Advanced Technology. - 0921-5107 .- 1873-4944. ; 58:1-2, s. 36-38
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Local-density-functional pseudopotential theory is used to investigate the structural, electronic and vibrational properties of vacancy-hydrogen complexes in germanium. The results are compared with recent infrared absorption data from proton and deuteron implanted Ge. The acceptor and donor levels of the VHn defects are derived semi-empirically from the relaxed structures</p>
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7.
  • Coomer, B.J., et al. (författare)
  • Vacancy-hydrogen complexes in germanium
  • 1998
  • Ingår i: E-MRS Meeting. - European Materials Research Society.
  • Konferensbidrag (refereegranskat)abstract
    • <p>Local-density-functional pseudopotential theory is used to investigate the structural, electronic and vibrational properties of vacancy-hydrogen complexes in germanium. The results are compared with recent infrared absorption data from proton and deuteron implanted Ge. The acceptor and donor levels of the VH defects are derived semi-empirically from the relaxed structures</p>
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8.
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9.
  • Engquist, M., et al. (författare)
  • Surgery versus nonsurgical treatment of cervical radiculopathy : A prospective, randomized study comparing surgery plus physiotherapy with physiotherapy alone with a 2-year follow-up
  • 2013
  • Ingår i: Spine. - 0362-2436 .- 1528-1159. ; 38:20, s. 1715-1722
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>STUDY DESIGN.: Prospective randomized controlled trial. OBJECTIVE.: To study the outcome of anterior cervical decompression and fusion combined with a structured physiotherapy program compared with the same physiotherapy program alone for patients with cervical radiculopathy. SUMMARY OF BACKGROUND DATA.: Knowledge concerning the effects of interventions for patients with cervical radiculopathy is scarce due to a lack of randomized studies. METHODS.: Sixty-three patients were randomized to surgery with postoperative physiotherapy (n = 31) or physiotherapy alone (n = 32). The surgical group was treated with anterior cervical decompression and fusion. The physiotherapy program included general/specific exercises and pain-coping strategies. The outcome measures were disability (Neck Disability Index), neck and arm pain intensity (visual analogue scale), and the patient's global assessment. Patients were followed for 24 months. RESULTS.: The result from the repeated-measures analysis of variance showed no significant between-group difference for Neck Disability Index (P = 0.23). For neck pain intensity, the repeated-measures analysis of variance showed a significant between-group difference during the study period in favor of the surgical group (P = 0.039). For arm pain intensity, no significant between-group differences were found according to the repeated-measures analysis of variance (P = 0.580). Eighty-seven percent of the patients in the surgical group rated their symptoms as "better/much better" at the 12-month follow-up compared with 62% in the nonsurgical group (P &lt; 0.05). At 24 months, the corresponding figures were 81% and 69% (P = 0.28). The difference was significant only at the 12-month follow-up in favor of the surgical group. Significant reduction in Neck Disability Index, neck pain, and arm pain compared with baseline was seen in both groups (P &lt; 0.001). CONCLUSION.: In this prospective, randomized study of patients with cervical radiculopathy, it was shown that surgery with physiotherapy resulted in a more rapid improvement during the first postoperative year, with significantly greater improvement in neck pain and the patient's global assessment than physiotherapy alone, but the differences between the groups decreased after 2 years. Structured physiotherapy should be tried before surgery is chosen. Copyright © 2013 Lippincott Williams &amp; Wilkins. Unauthorized reproduction of this article is prohibited.</p>
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10.
  • Grama, D, et al. (författare)
  • Clinical characteristics, treatment and survival of pancreatic tumors causing hormonal syndromes
  • 1992
  • Ingår i: World Journal of Surgery. - 0364-2313 .- 1432-2323. ; 16:4, s. 632-639
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Eighty-five patients with endocrine pancreatic tumors associated with clinical syndromes of hormone excess were retrospectively analyzed regarding symptomatology, means of diagnosis, and results of surgical and medical treatment during follow-up of 3-18 years (median 8 years). The combination of angiography and computed tomography was most successful in pre-operative localization of both primary tumors and metastases. Surgery provided long term cure in 39 of 44 patients with benign islet cell lesions, the majority having insulinomas. Forty-one patients had malignant tumors, which at the time of diagnosis or operation were associated with liver and/or regional lymph gland metastases in 56% and 24%, respectively. Sixteen patients with metastatic disease and/or very large tumors were considered inoperable, 5 patients underwent palliative resection of their malignant tumors, while grossly radical tumor removal was accomplished in 20 patients. Long-term cure was achieved in 5 patients by excision of primary tumors and localized liver or lymph gland metastases. Half of the patients, particularly those with insulinoma, gastrinoma, or vipoma, showed response to streptozotocin, in combination with other cytostatics, for a median of 24 months or a response to interferon for a median of 10 months. The overall 5-year and 10-year survival among the patients with malignant islet cells tumors was 54% and 28%, respectively. Absence of liver metastases at time of operation/diagnosis, smaller size of the primary tumor, grossly radical tumor resection as well as response to medical therapy predicted the more favorable survival.</p>
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