| 1. |
- Pourhamidi, Kaveh, et al.
(författare)
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Heat shock protein 27 concentrations are lower in patientswith type 1 diabetes mellitus than in healthy controls andcorrelates with large nerve fibre dysfunction
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Objective Heat shock protein 27 (HSP27) may contribute to the survival of neurons. Our aims were to study whether HSP27 concentrations differ between individuals with and without type 1 diabetes, and evaluate the relationship between the progression of peripheral nerve dysfunction and HSP27 concentrations.Research Design and Methods Type 1 diabetes patients (n=27, 41% women; mean age 41±8 years) were recruited in 1992 with a follow-up in 2005; serum HSP27 concentrations were determined in baseline and follow-up samples and compared to non-diabetic controls (n=397, 34% women; mean age 43±14 years). The type 1 diabetes patients underwent nerve conduction studies and thermal and vibration perception threshold tests at baseline and at follow-up. Reference data was used to standardise results for age, height and sex by calculating the Z-scores. Delta changes in HSP27 (follow-up HSP27 – baseline HSP27) and small and large nerve fibre function were used for correlation analyses.Results Type 1 diabetes patients had lower HSP27 concentrations at baseline (mean HSP27547 pg/ml, 95% CI 421, 711) and at follow-up (mean HSP27 538 pg/ml, 95% CI 417,693) compared to healthy controls (mean HSP27 785 pg/ml, 95% CI 732, 842; p<0.05 for both comparisons). Deteriorating large nerve fibre function correlated with delta HSP27 concentrations in type 1 diabetes (r=0.50, p=0.01).Conclusions Patients with type 1 diabetes had lower HSP27 concentrations than non-diabetic controls and progression of large nerve fibre dysfunction correlated with decreasing HSP27 concentrations during the follow-up period. This could be indicative ofinsufficient neuroprotection in type 1 diabetes.
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| 3. |
- Kaltsouni, Elisavet, et al.
(författare)
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Selective progesterone receptor modulation and brain activity at rest in patients with premenstrual dysphoric disorder
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Ovarian hormones have been indicated to impact brain connectivity and mood. However, there is no consistent evidence on hormone-dependent functional connectivity and mental health. Alterations in resting state networks have been suggested as markers of affective disorders, but only preliminary evidence is provided on premenstrual dysphoric disorder, in which symptoms occur upon fluctuations of ovarian hormones. Recently, three-month low-dose selective progesterone receptor modulator (SPRM) administration has been associated with symptom relief and altered task-based brain reactivity during a reactive aggression condition. The present study sought to investigate the effect of this treatment on resting state functional connectivity (rs-FC) in patients with PMDD. Seed-based analyses were conducted, including including seeds from the classic resting state networks along with the functional cluster affected by SPRM treatment. Within previously identified networks related with emotional processing, rs-FC was compared between individuals with PMDD during the symptomatic luteal phase before randomization to treatment or placebo and during the end of the last treatment cycle. Seed-based rs-FC analyses yielded significant treatment by time effects on rs-FC between the left posterior superior temporal gyrus and the right insula cortex, between the posterior cerebellum and the left temporal pole, and between the right lateral visual network and left superior frontal gyrus. Visuo-frontal luteal phase connectivity decreased for the SPRM group and was positively correlated with changes in mood symptom severity in the placebo group. Cerebellar and temporal connectivity increased for the SPRM treatment group, while temporo-insular connectivity decreased and was positively correlated with cortisol levels. These findings indicate that SPRM treatment influenced rs-FC, which could be a relevant mechanism behind symptom alleviation.
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| 4. |
- Landin-Wilhelmsen, Kerstin, 1952
(författare)
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Sekundär osteoporos
- 2019
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Ingår i: www.internetmedicin.se.
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Annan publikation (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Åkerström, Tobias, et al.
(författare)
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Intratumoural Aldosterone and Heterogeneity in Genetic Subtypes of Aldosterone Producing Adenomas
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- AbstractContextPrimary Aldosteronism is the most common endocrine cause of hypertension. Unilateral disease in the form of Aldosterone producing adenomas (APAs) is found in 1.5-3% of hypertensive. Determining the source of aldosteronism is necessary for correct diagnosis and further molecular analysis.ObjectiveTo evaluate tissue aldosterone as a marker of aldosterone production and correlate it to patient phenotype and tumour mutation status, and to explore molecular heterogeneity in APAs.DesignForty-six frozen tumour samples from patients diagnosed with APAs were included. Tumours were derived from a single endocrine referral center, and had been stored from 1985 to 2015. Tissue aldosterone concentration was related to clinical characteristics, genotype and molecular phenotype. Genetic heterogeneity was investigated by biopsies and in situ sequencing. Immunohistochemical analysis of Nephronectin, CYP11B1 and CYP11B2 were performed. qRT-PCR and in situ mRNA expression were used to analyze CYP11B2 mRNA expression.ResultsTissue aldosterone content was specific for aldosterone producing tumours and proved stable after long-term storage at -70C. CYP11B2 expression and aldosterone concentrations were higher in tumours with ATP1A1, ATP2B3 and CACNA1D mutations compared to those with KCNJ5 mutations (p<0.0001 and p=0.0018 respectively). The tissue aldosterone content correlated with CYP11B2 protein expression (r2=0.48, p<0.0001), and both CYP11B2 expression and tissue aldosterone content were associated with the plasma level of aldosterone (r2=0.33, p=0.0002 and r2=0.75, p<0.0001 respectively). In four tumours with suspicion of genetic heterogeneity, sampling of DNA revealed a heterogeneous KCNJ5 mutation in one tumour. Using in situ sequencing we confirmed heterogeneous expression of mutated KCNJ5 cDNA in the others. In three tumours classified as APAs, no mutation nor any aldosterone or CYP11B2 were detected, suggesting non-functional tumours.ConclusionTissue aldosterone content is specific for aldosterone producing lesions, correlates with plasma levels, and displays variable levels depending on tumour genotype. Genetic heterogeneity is evident in a subgroup of KCNJ5 mutated tumours. The present results show that CYP11B2 expression and tissue aldosterone measurement may be used to clarify the source of aldosterone secretion.
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| 6. |
- Berhan, Yonas, 1970-, et al.
(författare)
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Screening for undiagnosed type-2 diabetes in Swedish 6th grade school children
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Aims: To estimate the prevalence of undiagnosed type-2 diabetes in overweight Swedish school children 11-13 years old.Methods: BMI was measured in 5 528 school-children (11-13 years of age) attending the 6th grade, in five different regions in Sweden. Overweight was defined by international age-sex specific BMI cut-offs, corresponding to adult BMI cut-offs of 25 kg/m² at 18 years of age (ISO-BMI ≥25, n=1 275). Haemoglobin A1c (HbA1c) was measured in 1 126 children with ISO-BMI ≥25. Children with a DCCT-aligned HbA1c ≥ 6.1% on two occasions underwent an oral glucose-tolerance test (OGTT) to establish diabetes diagnosis.Results: Twenty four children (2.1%) had at least one HbA1c-value ≥6.1%. Three of them had HbA1c ≥6.1% on two occasions and all of them had a normal OGTT.Conclusion: In this cross-sectional population-based screening study of a high risk group of 11-13 years old Swedish school children we found no indication of undiagnosed diabetes or impaired glucose tolerance.Key
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| 7. |
- Grönberg, Annika, 1970-, et al.
(författare)
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Family structure and HbA1c in children with type 1 diabetes, a cohort study
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Objective: To study the impact of family structure on glycemic control in children and adolescents during the first two years following the diagnosis of type 1 diabetes. Research Design and Methods: 215 children and adolescents (<18 years) lived in four different family structures: 158 (74%) whole family, seven (3%) stepfamily, 26 (12%) shared custody and 24 (11%) single-parent family at diagnosis of type 1 diabetes. A questionnaire on the family’s social situation was completed at diagnosis and at one-year follow-up. HbA1c was analyzed at every follow-up during the first two years of treatment. Univariate and multivariate linear regression analyses were carried out with average Hb1Ac for the first and second years as dependent variables, family structure adjusted for age, body mass index standard deviation score, daily insulin dose and C-peptide.Results: HbA1c at diagnosis was higher in participants in the single-parent family 12.0± 4.5 %(108±26 mmol/mol) vs whole family 10.9±4.3 %(96±23 mmol/mol; p=0.024). In the whole family, first and second year average HbA1c was 6.4± 2.8 %(46±7 mmol/mol) and 6.7±2.9% (50±8 mmol/mol) vs 6.7±3.1% (50±10 mmol/mol) (p=0.011) and 7.1± 3.1%(54±10 mmol/mol (p=0.004) in the single-parent family. The average HbA1c in the first year was a predictor of HbA1c in the second year (p=0.024; R2 = 0.44) and when added to the multivariate model for HbA1c in the second year, no differences were found between the family groups. Conclusions: Family structure at type 1 diabetes diagnosis affects the glycemic control of children and adolescents during the first two years following diagnosis.
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| 8. |
- Nygren, Maria, et al.
(författare)
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Serious life events across childhood and mental health problems in early adolescence : The moderating role of family climate. Results from the ABIS population-based longitudinal study
- 2015
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- This study aims to investigate the association between experiences of serious life events assessed by checklists longitudinally across childhood (at age 5-6, age 8, and age 12-14 years) and level of mental health problems in early adolescence (at age 12-14), and the mediating role of family climate factors across childhood. Questionnaire data from the All Babies In Southeast Sweden (ABIS) population based cohort-study were used (n=1132). The association were best modelled with a sequential cumulative approach; that means that the number of time-periods at least one serious life event was experienced were linearly related to the level of mental health problems (SDQ-score) after controlling for age, sex/gender, parental educational level, immigrant status and fuzzy/difficult temperament at age 2-3 (b=0.58 [95% CI 0.28, 0.87], p<0.001). Parenting stress and the parents size and satisfaction of social support were found as moderating factors, where the association between serious life events and mental health problems only were found in the subgroups of families where the parent perceive chronically high levels of parenting stress (high at 3-4 times of 4 possible; n=163, b=1.28 [0.55, 2.01], p=0.001), have a small social network (n=108, p=1.75 [0.86, 2.64], p<0.001), and are dissatisfied with their social support (n=95, p=1.22 [0.36, 2.09], p=0.006). An absence of parenting stress across childhood and adequate social support for the parents are suggested as resilient factors. To avoid negative consequences for child mental health after experiences of stressful life events, parents should get adequate support in child health services.
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