| 1. |
- Durbeej, Natalie, et al.
(författare)
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Outside the norm : Mental health, school adjustment and community engagement in non-binary youth
- 2019
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Ingår i: Scandinavian Journal of Public Health. - : SAGE Publications. - 1403-4948 .- 1651-1905. ; 49:5, s. 529-538
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Tidskriftsartikel (refereegranskat)abstract
- Aims: The aim of this study was to explore the role of self-reported non-binary gender identity in mental health problems, school adjustment, and wish to exert influence on municipal issues in a community sample of adolescents.Methods: In a cross-sectional design, data were collected through an anonymous survey in Uppsala County, Sweden, among 8385 students (response rate 58.2%) in grades 7, 9, and 11, aged 13-17 years. The Strengths and Difficulties Questionnaire (SDQ) self-report was used to assess mental health problems. Gender identity was measured with one item and youth were categorized into those who identified as male or female (i.e. binary youth), and those who did or could not identify with either gender (i.e. non-binary youth). Logistic regressions and qualitative content analysis were used to analyse data.Results: Youth with non-binary gender identity (n = 137; 1.6%) had higher odds of having mental problems according to the SDQ total score (OR=3.05; 1.77-5.25). The association between non-binary gender identity and mental health problems remained significant after adjusting for confounders. Additionally, compared to their binary peers, the non-binary youth reported more truancy (36.5% vs 49.6%), more often failed a subject (21.5% vs 36.5%), and were more interested in exerting influence on municipal issues such as sociopolitical development, education, municipal services, and drug and alcohol policies (25.3% vs 38.0%).Conclusions: Youth with non-binary gender identity constitute a vulnerable population regarding mental health problems and school adjustment. The willingness to exert influence on municipal issues suggests a possible pathway to engagement.
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| 2. |
- Garcia-Bennett, Alfonso E., et al.
(författare)
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In vitro generation of motor neuron precursors from mouse embryonic stem cells using mesoporous nanoparticles
- 2014
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Ingår i: Nanomedicine. - 1743-5889 .- 1748-6963. ; 9:16, s. 2457-2466
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Tidskriftsartikel (refereegranskat)abstract
- Aim: Stem cell-derived motor neurons (MNs) are utilized to develop replacement strategies for spinal cord disorders. Differentiation of embryonic stem cells into MN precursors involves factors and their repeated administration. We investigated if delivery of factors loaded into mesoporous nanoparticles could be effective for stem cell differentiation in vitro. Materials & methods: We used a mouse embryonic stem cell line expressing green fluorescent protein under the promoter for the MN-specific gene Hb9 to visualize the level of MN differentiation. The differentiation of stem cells was evaluated by expression of MN-specific transcription factors monitored by quantitative real-time PCR reactions and immunocytochemistry. Results: Mesoporous nanoparticles have strong affiliation to the embryoid bodies, penetrate inside the embryoid bodies and come in contact with differentiating cells. Conclusion: Repeated administration of soluble factors into a culture medium can be avoided due to a sustained release effect using mesoporous silica.
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| 3. |
- Garcia-Bennett, Alfonso, et al.
(författare)
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In vitro generation of motor neuron precursors from mouse embryonic stem cells using mesoporous nanoparticles
- 2014
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Ingår i: Nanomedicine. - : Future Medicine Ltd. - 1743-5889 .- 1748-6963. ; 9:16, s. 2457-2466
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Tidskriftsartikel (refereegranskat)abstract
- Aim: Stem cell-derived motor neurons (MNs) are utilized to develop replacement strategies for spinal cord disorders. Differentiation of embryonic stem cells into MN precursors involves factors and their repeated administration. We investigated if delivery of factors loaded into mesoporous nanoparticles could be effective for stem cell differentiation in vitro.Materials & methods: We used a mouse embryonic stem cell line expressing green fluorescent protein under the promoter for the MN-specific gene Hb9 to visualize the level of MN differentiation. The differentiation of stem cells was evaluated by expression of MN-specific transcription factors monitored by quantitative real-time PCR reactions and immunocytochemistry.Results: Mesoporous nanoparticles have strong affiliation to the embryoid bodies, penetrate inside the embryoid bodies and come in contact with differentiating cells.Conclusion: Repeated administration of soluble factors into a culture medium can be avoided due to a sustained release effect using mesoporous silica.
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| 4. |
- Sala-Jarque, Júlia, et al.
(författare)
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Mesoporous silica particles are phagocytosed by microglia and induce a mild inflammatory response in vitro
- 2022
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Ingår i: Nanomedicine. - : Future Medicine Ltd. - 1743-5889 .- 1748-6963. ; 17:15, s. 1077-1094
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Tidskriftsartikel (refereegranskat)abstract
- Aim:Mesoporous silica particles (MSPs) are broadly used drug delivery carriers. In this study, the authors analyzed the responses to MSPs of astrocytes and microglia, the two main cellular players in neuroinflammation.Materials & methods:Primary murine cortical mixed glial cultures were treated with rhodamine B-labeled MSPs.Results:MSPs are avidly internalized by microglial cells and remain inside the cells for at least 14 days. Despite this, MSPs do not affect glial cell viability or morphology, basal metabolic activity or oxidative stress. MSPs also do not affect mRNA levels of key proinflammatory genes; however, in combination with lipopolysaccharide, they significantly increase extracellular IL-1β levels.Conclusion:These results suggest that MSPs could be novel tools for specific drug delivery to microglial cells. Plain language summary Mesoporous silica particles (MSPs) are broadly used drug delivery carriers. In this study, the authors analyzed the responses of two types of brain cells, astrocytes and microglia, to MSPs. Mouse astrocytes and microglia were kept alive in cultures and were treated with MSPs that were labeled with a red fluorescent agent to facilitate visualization under the microscope. MSPs are avidly internalized by microglial cells and remain inside the cells for at least 14 days. Despite this, MSPs do not affect glial cell viability or morphology, basal metabolic activity or oxidative stress. When given alone, MSPs do not affect mRNA levels of key proinflammatory genes. However, MSPs given in combination with lipopolysaccharide, a strong proinflammatory agent, significantly increase extracellular levels of IL-1β, one of the proinflammatory mediators studied. These results suggest that MSPs could be novel tools for specific drug delivery to microglial cells.
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| 5. |
- Trolle, Carl, et al.
(författare)
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Boundary cap neural crest stem cells homotopically implanted to the injured dorsal root transitional zone give rise to different types of neurons and glia in adult rodents
- 2014
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Ingår i: BMC Neuroscience. - : BioMed Central. - 1471-2202. ; 15, s. 60-
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Tidskriftsartikel (refereegranskat)abstract
- The boundary cap is a transient group of neural crest-derived cells located at the presumptive dorsal root transitional zone (DRTZ) when sensory axons enter the spinal cord during development. Later, these cells migrate to dorsal root ganglia and differentiate into subtypes of sensory neurons and glia. After birth when the DRTZ is established, sensory axons are no longer able to enter the spinal cord. Here we explored the fate of mouse bNCSCs implanted to the uninjured DRTZ after dorsal root avulsion for their potential to assist sensory axon regeneration. Grafted cells showed extensive survival and differentiation after transplantation to the avulsed DRTZ. Transplanted cells located outside the spinal cord organized elongated tubes of Sox2/GFAP expressing cells closely associated with regenerating sensory axons or appeared as small clusters on the surface of the spinal cord. Others, migrating into the host spinal cordas single cells, differentiated to spinal cord neurons with different neurotransmitter characteristics, extensive fiber organization, and in some cases surrounded by glutamatergic terminal-like profiles. These findings demonstrate that bNCSCs implanted at the site of dorsal root avulsion injury display remarkable differentiation plasticity inside the spinal cord and in the peripheral compartment where they organize tubes associated with regenerating sensory fibers. These properties offer a basis for exploring the ability of bNCSCs to assist regeneration of sensory axons into the spinal cord and replace lost neurons in the injured spinal cord.
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