| 1. |
- Keel, Sonja G., et al.
(author)
-
Allocation of carbon to fine root compounds and their residence times in a boreal forest depend on root size class and season
- 2012
-
In: New Phytologist. - Malden : Wiley-Blackwell. - 0028-646X .- 1469-8137. ; 194:4, s. 972-981
-
Journal article (peer-reviewed)abstract
- Fine roots play a key role in the forest carbon balance, but their carbon dynamics remain largely unknown. We pulse labelled 50 m2 patches of young boreal forest by exposure to 13CO2 in early and late summer. Labelled photosynthates were traced into carbon compounds of < 1 and 13 mm diameter roots (fine roots), and into bulk tissue of these and first-order roots (root tips). Root tips were the most strongly labelled size class. Carbon allocation to all size classes was higher in late than in early summer; mean residence times (MRTs) in starch increased from 4 to 11 months. In structural compounds, MRTs were 0.8 yr in tips and 1.8 yr in fine roots. The MRT of carbon in sugars was in the range of days. Functional differences within the fine root population were indicated by carbon allocation patterns and residence times. Pronounced allocation of recent carbon and higher turnover rates in tips are associated with their role in nutrient and water acquisition. In fine roots, longer MRTs but high allocation to sugars and starch reflect their role in structural support and storage. Accounting for heterogeneity in carbon residence times will improve and most probably reduce the estimates of fine root production.
|
|
| 2. |
|
|
| 3. |
|
|
| 4. |
|
|
| 5. |
- Högberg, K, et al.
(author)
-
Prerequisites required for the provision and use of web-based communication for psychosocial support in haematologic care
- 2013
-
In: European Journal of Oncology Nursing. - : Elsevier Sci LTD. - 1462-3889 .- 1532-2122. ; 17:5, s. 596-602
-
Journal article (peer-reviewed)abstract
- Purpose: The purpose of this study was to describe the prerequisites required for the provision and use of web-based communication for psychosocial support within a haematology clinic, from a patient and family perspective. Method: A qualitative design using content analysis was used. A strategically selected sample of patients ( n ¼ 11) and family members ( n ¼ 6) were offered access to a web-based communication capability with a nurse. After four months, individual interviews were conducted with all participants, in order to identify necessary prerequisites. Results: Preferences and characteristics of the individual patient or family member are crucial as to whether web-based communication for support is perceived as useful. To feel comfortable with writing and to self-identify the need for support are fundamental in getting motivated to use web-based com- munication. An effective organization around psychosocial support in general is another prerequisite. Goals and responsibilities must be clearly de fi ned for patients and family members to understand their rights and enable the transformation of opportunities into practice. The use of web-based communi- cation must also be a convenient and naturally incorporated part of both individual and organizational use of the web in general. Conclusions: Prerequisites of taking into account caretakers ’ different preferences and needs, providing highly structured psychosocial support activities and providing a congruent range of web services, are necessary for successful provision and use of web-based communication for psychosocial support.
|
|
| 6. |
- Olivier, Jocelien D A, et al.
(author)
-
The effects of maternal depression and maternal selective serotonin reuptake inhibitor exposure on offspring
- 2013
-
In: Frontiers in Cellular Neuroscience. - : Frontiers Media SA. - 1662-5102. ; 7, s. 73-
-
Research review (peer-reviewed)abstract
- It has been estimated that 20% of pregnant women suffer from depression and it is well-documented that maternal depression can have long-lasting effects on the child. Currently, common treatment for maternal depression has been the selective serotonin reuptake inhibitor medications (SSRIs) which are used by 2-3% of pregnant women in the Nordic countries and by up to 10% of pregnant women in the United States. Antidepressants cross the placenta and are transferred to the fetus, thus, the question arises as to whether children of women taking antidepressants are at risk for altered neurodevelopmental outcomes and, if so, whether the risks are due to SSRI medication exposure or to the underlying maternal depression. This review considers the effects of maternal depression and SSRI exposure on offspring development in both clinical and preclinical populations. As it is impossible in humans to study the effects of SSRIs without taking into account the possible underlying effects of maternal depression (healthy pregnant women do not take SSRIs), animal models are of great value. For example, rodents can be used to determine the effects of maternal depression and/or perinatal SSRI exposure on offspring outcomes. Unraveling the joint (or separate) effects of maternal depression and SSRI exposure will provide more insights into the risks or benefits of SSRI exposure during gestation and will help women make informed decisions about using SSRIs during pregnancy.
|
|
