| 1. |
- Holgerson, Meredith A., et al.
(författare)
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Classifying Mixing Regimes in Ponds and Shallow Lakes
- 2022
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Ingår i: Water resources research. - : John Wiley & Sons. - 0043-1397 .- 1944-7973. ; 58:7
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Tidskriftsartikel (refereegranskat)abstract
- Lakes are classified by thermal mixing regimes, with shallow waterbodies historically categorized as continuously mixing systems. Yet, recent studies demonstrate extended summertime stratification in ponds, underscoring the need to reassess thermal classifications for shallow waterbodies. In this study, we examined the summertime thermal dynamics of 34 ponds and shallow lakes across temperate North America and Europe to categorize and identify the drivers of different mixing regimes. We identified three mixing regimes: rarely (n = 18), intermittently (n = 10), and often (n = 6) mixed, where waterbodies mixed an average of 2%, 26%, and 75% of the study period, respectively. Waterbodies in the often mixed category were larger (≥4.17 ha) and stratification weakened with increased wind shear stress, characteristic of “shallow lakes.” In contrast, smaller waterbodies, or “ponds,” mixed less frequently, and stratification strengthened with increased shortwave radiation. Shallow ponds (<0.74 m) mixed intermittently, with daytime stratification often breaking down overnight due to convective cooling. Ponds ≥0.74 m deep were rarely or never mixed, likely due to limited wind energy relative to the larger density gradients associated with slightly deeper water columns. Precipitation events weakened stratification, even causing short-term mixing (hours to days) in some sites. By examining a broad set of shallow waterbodies, we show that mixing regimes are highly sensitive to very small differences in size and depth, with potential implications for ecological and biogeochemical processes. Ultimately, we propose a new framework to characterize the variable mixing regimes of ponds and shallow lakes.
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| 2. |
- Campbell, Christine, et al.
(författare)
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Markers of steroid receptor, kinase signalling pathways and Ki-67 expression in relation to tamoxifen sensitivity and resistance
- 2020
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Ingår i: Translational Breast Cancer Research. - : AME Publishing Company. - 2218-6778. ; 1
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Tidskriftsartikel (refereegranskat)abstract
- Background: It remains clinically important to identify ER positive breast cancers likely to respond to tamoxifen (TAM) and so we aimed to select a group of biomarkers able to predict response. We also assessed whether data from different sample types [tumor microarrays (TMAs) and core biopsies] or tumor sites could be combined for biomarker studies.Methods: A total of 123 endocrine treatment naïve patients with known ER and HER2 status treated with TAM had paraffin-embedded tumor tissue available either as TMAs (n=102) or core biopsies (n=21). TMA cores were collected from three different tumor sites, two central and one peripheral. Ten biomarkers were evaluated by immunohistochemistry, for % positivity and/or H-Score, comprising: ER, HER2, Ki-67, phosphorylated forms of ER (Ser118), IGF1R, PRAS40, Akt & MAPK (ERK1/2), and PTEN & androgen receptor expression (AR). Each tumor was analysed for Akt1 E17K somatic mutation using BEAMing technology. Patient outcome was assessed by clinical benefit (CB) rate & survival analyses [time to progression (TTP) and time to death (TTD)].Results: There was no significant difference in % positivity or H-Score between central & peripheral tumor sites for all biomarkers examined. After False Discovery Rate (FDR) correction differences (P<0.05) were observed between the two central samples only for HER2 & pER118 and pPRAS40. However, differences in biomarker expression were common between core biopsies and TMAs. Only 2/123 (1.6%) tumors had Akt1 E17K mutations. Univariate and multivariate analyses identified that lower levels of PTEN and higher levels of Ki-67 (% positivity) were predictive of poor outcome (TTP & TTD) following TAM. Higher ER. lower Ki-67 and AR/ER ratio <2 predicted increased CB rate.Conclusions: There were few differences in marker expression between TMAs from different intra-tumoral sites. More marked differences between TMAs and core biopsies suggest caution if combining such datasets. Loss of PTEN, a key regulator of the PI3K/Akt pathway, was the only RTK/kinase signaling biomarker related to poorer clinical outcome. PTEN along with ER & lower Ki-67 proved the most predictive markers for better outcome (TTP & TTD and/or CBR) following TAM treatment.Keywords: ER+ breast cancer; Akt pathway; tamoxifen
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| 3. |
- Chernyshov, P. V., et al.
(författare)
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Quality of life measurement in acne. Position Paper of the European Academy of Dermatology and Venereology Task Forces on Quality of Life and Patient Oriented Outcomes and Acne, Rosacea and Hidradenitis Suppurativa
- 2018
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Ingår i: Journal of the European Academy of Dermatology and Venereology. - : Wiley. - 0926-9959. ; 32:2, s. 194-208
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Forskningsöversikt (refereegranskat)abstract
- Acne causes profound negative psychological and social effects on the quality of life (QoL) of patients. The European Dermatology Forum S3-Guideline for the Treatment of Acne recommended adopting a QoL measure as an integral part of acne management. Because of constantly growing interest in health-related QoL assessment in acne and because of the high impact of acne on patients' lives, the European Academy of Dermatology and Venereology Task Force on QoL and Patient Oriented Outcomes and the Task Force on Acne, Rosacea and Hidradenitis Suppurativa have documented the QoL instruments that have been used in acne patients, with information on validation, purposes of their usage, description of common limitations and mistakes in their usage and overall recommendations.
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| 4. |
- Dalgard, Florence J., et al.
(författare)
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Itch and Mental Health in Dermatological Patients across Europe : A Cross-Sectional Study in 13 Countries
- 2020
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Ingår i: Journal of Investigative Dermatology. - : Elsevier BV. - 0022-202X. ; 140:3, s. 568-573
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Tidskriftsartikel (refereegranskat)abstract
- Itch is a highly prevalent and multidimensional symptom. We aimed to analyze the association between itch and mental health in dermatological patients. This multicenter study is observational and cross-sectional and was conducted in dermatological clinics across 13 European countries. A total of 3,530 patients and 1,094 healthy controls were included. Patients were examined clinically. Outcome measures were itch (presence, chronicity, and intensity), the Hospital Anxiety and Depression Scale, EQ-5D visual analogue scale, sociodemographics, suicidal ideation, and stress (negative life events and economic difficulties). Ethical approval was obtained. Results showed significant association between the presence of itch in patients and clinical depression (odds ratio, 1.53; 95% confidence interval, 1.15–2.02), suicidal ideation (odds ratio, 1.27; 95% confidence interval, 1.01–1.60), and economic difficulties (odds ratio, 1.24; 95% confidence interval, 1.10–1.50). The mean score of reported generic health status assessed by the EQ-5D visual analogue scale was 65.9 (standard deviation = 20.1) in patients with itch, compared with 74.7 (standard deviation = 18.0) in patients without itch (P < 0.001) and 74.9 (standard deviation = 15.7) in controls with itch compared with 82.9 (standard deviation = 15.6) in controls without itch (P < 0.001). Itch contributes substantially to the psychological disease burden in dermatological patients, and the management of patients should include access to multidisciplinary care.
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| 5. |
- Ekbäck, Maria Palmetun, 1961-
(författare)
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Hirsutism and quality of life with aspects on social support, anxiety and depression
- 2013
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Hirsutism is excessive hair growth in women. The prevalence is estimated at 5%. The aim of this thesis was to describe different aspects of how life is affected for women suffering from hirsutism. Both qualitative and quantitative methods were used. Study I showed that hirsutism deeply affects women’s experiences of their bodies in a negative way and was experienced as a life sorrow. In Study II the patient-physician relationship was described. The patient-physician relationship from the patient’s perspective was suboptimal, as most meetings included feelings of being rejected and even humiliation. In Study III the aim was to translate and psychometrically evaluate an instrument that measures perceived social support, “The Multidimensional Scale of Perceived Social Support” (MSPSS). The translation was performed according to WHO:s official process, and validation was performed in a sample that consisted of 281 participants, 127 women with hirsutism (main sample) and 154 nursing students. MSPSS had good psychometric properties with regard to factor structure, construct validity, internal consistency and reproducibility. Study IV described different aspects of HRQoL in the main sample, the correlation of anxiety, depression, level of hairiness, age and BMI. The F-G scores were dichotomized into minor (F-G ≤14) and major (F-G≥15) hair growth. Higher levels of hair growth were significantly correlated to a lower level of QoL measured by DLQI, EQ-5D and symptoms of both anxiety and depression measured by HADS. Study V investigated if social support was associated with quality of life and outcome of HRQoL compared to a reference group of women (n=1115). SF-36, the MSPSS and the F-G scale were used. Compared to the reference group, women with hirsutism reported lower quality of life in all dimensions of SF-36 (p<0.01) The dimension most affected was vitality (VT=41.2), which had a lower value than has been reported for patients with MS and myasthenia gravis. A Multiple Regression Analysis showed a significant relation between quality of life and social support, indicating its importance for the ability to adapt, in spite of low quality of life.
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| 6. |
- Paulsson, Kajsa, et al.
(författare)
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Microdeletions are a general feature of adult and adolescent acute lymphoblastic leukemia: Unexpected similarities with pediatric disease
- 2008
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Ingår i: Proceedings of the National Academy of Sciences. - : Proceedings of the National Academy of Sciences. - 1091-6490 .- 0027-8424. ; 105:18, s. 6708-6713
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Tidskriftsartikel (refereegranskat)abstract
- We present here a genome-wide map of abnormalities found in diagnostic samples from 45 adults and adolescents with acute lymphoblastic leukemia (ALL). A 500K SNP array analysis uncovered frequent genetic abnormalities, with cryptic deletions constituting half of the detected changes, implying that microdeletions are a characteristic feature of this malignancy. Importantly, the pattern of deletions resembled that recently reported in pediatric ALL, suggesting that adult, adolescent, and childhood cases may be more similar on the genetic level than previously thought. Thus, 70% of the cases displayed deletion of one or more of the CDKN2A, PAX5, IKZF1, ETV6, RB1, and EBF1 genes. Furthermore, several genes not previously implicated in the pathogenesis of ALL were identified as possible recurrent targets of deletion. In total, the SNP array analysis identified 367 genetic abnormalities not corresponding to known copy number polymorphisms, with all but two cases (96%) displaying at least one cryptic change. The resolution level of this SNP array study is the highest used to date to investigate a malignant hematologic disorder. Our findings provide insights into the leukemogenic process and may be clinically important in adult and adolescent ALL. Most importantly, we report that microdeletions of key genes appear to be a common, characteristic feature of ALL that is shared among different clinical, morphological, and cytogenetic subgroups.
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| 7. |
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| 8. |
- Sampogna, Francesca, et al.
(författare)
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Measuring the impact of dermatological conditions on family and caregivers : a review of dermatology-specific instruments
- 2017
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Ingår i: Journal of the European Academy of Dermatology and Venereology. - : Wiley. - 0926-9959. ; 31:9, s. 1429-1439
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Forskningsöversikt (refereegranskat)abstract
- The patient is the centre of a web of relationships, and the impact of his/her disease on family members and caregivers must be taken into account. The aim of this study was to identify the specific instruments that measure the impact of a dermatological disease on the quality of life (QoL) of family members, by performing a systematic search of the literature. Fifteen papers were identified, describing the creation and validation of nine instruments. Four of them concerned atopic dermatitis (Dermatitis Family Index, DFI; Parents’ Index QoL Atopic Dermatitis, PiQoL-AD; QoL in primary caregivers of children with atopic dermatitis, QPCAD; Childhood Atopic Dermatitis Impact Scale, CADIS), two measured the impact of psoriasis in family members (Psoriasis Family Index, PFI; FamilyPso), one the impact of epidermolysis bullosa (Epidermolysis Bullosa Burden of Disease, EB-BoD), one of ichthyosis (Family Burden Ichthyosis, FBI), and one was generic for dermatological conditions (Family Dermatology Life Quality Index, FDLQI). The European Academy of Dermatology and Venereology quality of life taskforce recommends that the impact of a skin disease on family and caregivers should be measured as part of any thorough evaluation of the burden of a disease. Guidelines are given to choose the most appropriate instruments.
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| 9. |
- Sise, Andrew, et al.
(författare)
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Health and well-being needs of Indigenous adolescents : a protocol for a scoping review of qualitative studies
- 2024
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Ingår i: BMJ Open. - : BMJ Publishing Group Ltd. - 2044-6055. ; 14:5
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Tidskriftsartikel (refereegranskat)abstract
- Introduction: Improving the health of Indigenous adolescents is central to addressing the health inequities faced by Indigenous peoples. To achieve this, it is critical to understand what is needed from the perspectives of Indigenous adolescents themselves. There have been many qualitative studies that capture the perspectives of Indigenous young people, but synthesis of these has been limited to date.Methods and analysis: This scoping review seeks to understand the specific health needs and priorities of Indigenous adolescents aged 10-24 years captured via qualitative studies conducted across Australia, Aotearoa New Zealand, Canada, the USA, Greenland and Sami populations (Norway and Sweden). A team of Indigenous and non-Indigenous researchers from these nations will systematically search PubMed (including the MEDLINE, PubMed Central and Bookshelf databases), CINAHL, Embase, Scopus, the Informit Indigenous and Health Collections, Google Scholar, Arctic Health, the Circumpolar Health Bibliographic Database, Native Health Database, iPortal and NZresearch.org, as well as specific websites and clearinghouses within each nation for qualitative studies. We will limit our search to articles published in any language during the preceding 5 years given that needs may have changed significantly over time. Two independent reviewers will identify relevant articles using a two-step process, with disagreements resolved by a third reviewer and the wider research group. Data will then be extracted from included articles using a standardised form, with descriptive synthesis focussing on key needs and priorities. This scoping review will be conducted and reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews guidelines.Ethics and dissemination: Ethics approval was not required for this review. Findings will be disseminated via a peer-reviewed journal article and will inform a broader international collaboration for Indigenous adolescent health to develop evidence-based actions and solutions.
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