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2 results on '"Susanne Gustafsson"'

1. Development of tolerance against toxic cyanobacteria in Daphnia.

Author

Susanne Gustafsson and Lars-Anders Hansson

Abstract

We tested whether previous exposure to a toxic strain of cyanobacteria (Microcystis) affects survival, growth, and reproduction of a common herbivore, Daphnia magna. Samples from three natural populations of D. magna were each divided into two parts; one part was fed a mixture of toxic Microcystis and the non-toxic green alga Scenedesmus whereas the other part was fed only Scenedesmus. After four weeks, we compared the ability of these two populations to withstand the toxic Microcystis by assessing survivorship, growth, and reproduction. We found that the ability of D. magna to cope successfully with toxic Microcystis is improved if the animals have experienced previous exposure to toxic Microcystis. This suggests that the toxin may less affect the D. magna populations that are repeatedly exposed to toxic cyanobacteria in their natural habitat than populations lacking prior exposure. Since the ability to tolerate toxins is manifested in both improved survival and larger size of the animals, it may have considerable impact on zooplankton community composition in fresh-waters. [ABSTRACT FROM AUTHOR]

Published
2004

2. A person-centred approach to health promotion for persons 70+ who have migrated to Sweden: promoting aging migrants’ capabilities implementation and RCT study protocol

Author

Synneve Dahlin-Ivanoff, Susanne Gustafsson, Katarina Wilhelmson, Sten Landahl, Greta Häggblom-Kronlöf, and Qarin Lood

Subjects
Male, Research design, Gerontology, Aging, medicine.medical_specialty, Activities of daily living, Context (language use), Health Promotion, law.invention, Study Protocol, Randomized controlled trial, law, Health care, medicine, Humans, Finland, Aged, Randomised controlled trial, Sweden, Transients and Migrants, business.industry, Public health, Balkan Peninsula, Intervention studies, Health promotion, Health education, Research Design, Emigrants and immigrants, Female, Geriatrics and Gerontology, business
Abstract

There are inequities in health status associated with ethnicity, which may limit older foreign-born persons’ ability to age optimally. Health promotion for older persons who have experienced migration is thus an area of public health importance. However, since research related to this issue is very limited, the study ‘Promoting Aging Migrants’ Capabilities’ was initiated to improve our understanding. The study aims to implement and evaluate a linguistically adapted, evidence-based, health-promoting intervention with a person-centred approach for two of the largest groups of aging persons who have migrated to Sweden: persons from Finland and persons from the Balkan Peninsula. This study has a descriptive, analytical, and experimental design. It is both a randomised controlled trial and an implementation study, containing the collection and analysis of both qualitative and quantitative data. The setting is an urban district in a medium-sized Swedish city with a high proportion of persons who were born abroad and whose socio-economic status is low. The intervention comprises four group meetings (‘senior meetings’) and one follow-up home visit made by a multi-professional team. For the randomised controlled trial, the plan is to recruit at least 130 community-dwelling persons 70 years or older from the target group. Additional persons from involved organisations will participate in the study of the implementation. Both the intervention effects in the target group (outcome) and the results of the implementation process (output) will be evaluated. The results of this forthcoming randomised controlled trial and implementation study may be useful for optimising implementation of person-centred, health-promoting initiatives for older persons who have experienced migration. It is also hoped that this combined study will show that the capabilities for optimal aging among older persons born in Finland and the Balkan countries can be improved in the Swedish healthcare context. The trial was registered at ClinicalTrials.gov April 10, 2013, identifier: NCT01841853 .

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