| 1. |
- Schwandt, Melanie L., et al.
(författare)
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Gene-Environment Interactions and Response to Social Intrusion in Male and Female Rhesus Macaques
- 2010
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Ingår i: Biological Psychiatry. - : Elsevier BV. - 0006-3223 .- 1873-2402. ; 67:4, s. 323-330
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Tidskriftsartikel (refereegranskat)abstract
- Background: Genetic factors interact with environmental stressors to moderate risk for human psychopathology, but sex may also be an important mediating factor. Different strategies for coping with environmental stressors have evolved in males and females, and these differences may underlie the differential prevalence of certain types of psychopathology in the two sexes. In this study, we investigated the possibility of sex-specific gene-environment interactions in a nonhuman primate model of response to social threat. Methods: Rhesus macaques (77 males and 106 females) were exposed to an unfamiliar conspecific. Using factor analysis, we identified three behavioral factors characterizing the response to social threat. Monkeys were genotyped for the serotonin transporter-linked polymorphism (5-HTTLPR), and the effects of genotype, early life stress, and sex on behavioral responses were evaluated. Results: Factor analysis produced five factors: High-Risk Aggression, Impulsivity/Novelty-Seeking, Gregariousness/Boldness, Harm Avoidance, and Redirected Aggression. Overall, males displayed higher levels of High-Risk Aggression and Gregariousness/Boldness than females. Levels of High-Risk Aggression in males carrying the s allele were significantly higher if they were also exposed to early adversity in the form of peer rearing. Conclusions: Our findings support those from studies in humans suggesting that males are more vulnerable to externalizing or aggression-related disorders. The results highlight the importance of interactions that exist among behavior, genes, and the environment and suggest that sex differences in vulnerability to psychopathology may be grounded in our evolutionary history.
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| 2. |
- Lindholm, Torun, et al.
(författare)
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Infants and toddlers remembering and forgetting of a stressful medical procedure
- 2009
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Ingår i: Journal of Pediatric Psychology. - : Oxford University Press (OUP). - 0146-8693 .- 1465-735X. ; 34:2, s. 205-216
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Tidskriftsartikel (refereegranskat)abstract
- Objective: To examine whether a distressing medical procedure leaves lasting impressions in young children’s memories. Methods: Children 12- to 78-weeks old (Nfl172) received inhalation treatment through a face mask or underwent other interventions at a pediatric emergency department. They were randomized to be presented with neutral cues and cues from the inhalation 1 week or 6 months after the target event. Children’s reactions at cue presentation were scored from videotapes. Results: Across the age span tested, children treated with inhalation showed higher distress than controls when presented with cues from inhalation 1 week, but not 6 months after target treatment. Conclusions: Stress during medical procedures in preverbal children may develop as a result of prior experience of such procedures. These memories typically seem to fade within 6 months.
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| 3. |
- Sjöberg, Rickard L, et al.
(författare)
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Role of monoamine-oxidase-A-gene variation in the development of glioblastoma in males : a case control study
- 2019
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Ingår i: Journal of Neuro-Oncology. - : Springer. - 0167-594X .- 1573-7373. ; 145:2, s. 287-294
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Tidskriftsartikel (refereegranskat)abstract
- Background: The Mono-amine oxidase-A (MAO-A) enzyme is involved in the degradation and regulation of catecholamines such as serotonin, dopamine, epinephrine and nor-epinephrine. Preclinical studies suggest that this enzyme may contribute to an environment favorable for growth of malignant glioma. The MAO-A gene is located on the X-chromosome and has at least one functional genetic polymorphism. The aim of the present study was to explore possible effects of MAO-A genotype on development of glioblastoma in males.Methods: Genotypes for 437 glioma cases and 876 population-based controls from the Swedish Glioma International Case–Control study (GICC) were compared. We analyzed the germline DNA using the Illumina Oncoarray. We selected seven single nucleotide polymorphisms (SNPs) located in the MAO-A gene, and imputed genotypes based on data from the 1000 genomes project. We used 1579 male glioblastoma cases and 1875 controls comprising the whole GICC cohort for subsequent validation of findings.Results: The rs144551722 SNP was a significant predictor of development of glioblastoma in males (p-value = 0.0056) but not in females even after correction for multiple testing. We conducted haplotype analysis to confirm an association between MAO-A gene and risk of glioblastoma (p-value = 0.016). We found similar results in the validation sample.Conclusions: These results suggest the possibility of a role for the MAO-A enzyme and the MAO-A gene in the development of glioblastoma in males.
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| 4. |
- Tikkanen, R., et al.
(författare)
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Influence of a HTR2B Stop Codon on Glucagon Homeostasis and Glucose Excursion in Non-Diabetic Men
- 2016
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Ingår i: Experimental and clinical endocrinology & diabetes. - : Georg Thieme Verlag KG. - 0947-7349 .- 1439-3646. ; 124:9, s. 529-534
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Tidskriftsartikel (refereegranskat)abstract
- Limited data are available about the role of the serotonin 2B (5-HT2B) receptor in the function of human islets. This study aimed to test whether the 5-HT2B receptor contributes to glucose, insulin, and glucagon homeostasis in humans, utilizing a hereditary loss-of-function gene mutation in the receptor, which causes a 50% reduction in the production of the receptor protein in heterozygotes. This clinical study enrolled participants recruited by newspaper advertisements and from mental status examinations. A cohort of participants from a young Finnish founder population composed of 68 non-diabetic males with a mean age of 30 was divided into groups for comparison based on being a 5-HT2B receptor loss-of-function gene mutation (HTR2B Q20*) heterozygote carrier (n=11) or not (n=57). Serum levels of glucose, insulin, and glucagon were measured in a 5h oral glucose tolerance test using a 75g glucose challenge. Insulin resistance, insulin sensitivity, and beta cell activity were calculated using the homeostasis model assessment (HOMA2) and whole body insulin sensitivity index (WBISI), as well as the ratio of glucagon to insulin was noted. The areas under the curves (AUCs) were also determined. Concentrations of the serotonin metabolite 5-hydroxyindoleacetic acid (5-HIAA) were measured in cerebrospinal fluid (CSF). Covariate adjusted mean score comparisons were applied. Lower glucagon secretion and decreased glucose excursion were observed among HTR2B Q20* carriers as compared with individuals who were homozygotes for the wild-type Q20 allele (controls). No differences in insulin secretion, beta cell activity, insulin resistance, or insulin sensitivity were observed. The glucagon to insulin ratio differed between the HTR2B Q20* carriers and controls. CSF levels of 5-HIAA were similar between groups. Our findings indicate that the 5-HT2B receptor may contribute to the regulation of human glucagon and glucose homeostasis and the interplay between glucagon and insulin secretion.
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| 5. |
- Andersson, Per, 1952-, et al.
(författare)
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Effects of family history and personal experience of illness on inclination to change health related behavior
- 2009
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Ingår i: Central European Journal of Public Health. - Prague : National Institute of Public Health in cooperation with Tigris Ltd. - 1210-7778 .- 1803-1048. ; 17:1, s. 3-7
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the present study was to examine how personal experience of illness and family history of cardiovascular disease (CVD), adjusted for gender, education and nationality, affects risk behaviour. Subjects were 2054 men and women of age 50 from two countries, Sweden (n=1011) and Poland (n=1043), who were recruited from screening program in primary health care. Family history, personal experience and risk behaviours (smoking habits, exercise habits, BMI-level) were self-reported. The results show that smoking behaviour is affected by personal experience of illness but not by family history of CVD. No effects of these variables were found on the remaining risk related variables that were tested in this study. These results suggest that individuals with a personal experience of illness may be inclined to change smoking behaviour more than the average person. Smoking prevention strategies may thus benefit from targeting this group in particular.
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| 6. |
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| 7. |
- Andersson, Per, et al.
(författare)
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Knowledge about cardiovascular risk factors among obese individuals.
- 2006
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Ingår i: European Journal of Cardiovascular Nursing. - : Oxford University Press (OUP). - 1474-5151 .- 1873-1953. ; 5:4
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Obesity is an important biological risk factor for cardiovascular disease (CVD).AIMS: The main aim of this study was to answer the question whether obese individuals differ from individuals with normal weight with regard to knowledge about risk factors for CVD. A further aim was to replicate previous findings that obese individuals are at higher risk of developing other biological risk factors for CVD.METHOD: Normal weights, BMI<25 kg/m(2) (n=385), and obese, BMI> or =30 kg/m(2) (n=159), individuals were identified from a screening program conducted among 50-year-old inhabitants of the County of Västmanland, Sweden. Participants answered questions regarding their gender, level of education, and items relating to knowledge about cardiovascular risk factors. Total cholesterol and blood glucose levels, height, weight and blood pressure were measured.RESULTS: Obese individuals did not differ significantly from individuals with a normal weight regarding knowledge of cardiovascular risk factors when education was controlled for. Obesity and low level of education are associated with other risk factors for CVD such as high blood pressure and high serum cholesterol.CONCLUSION: Obese individuals are at an increased risk of developing other risk factors for CVD but are just as knowledgeable about risk factors for CVD as normal weighting individuals.
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| 8. |
- Andersson, Per, et al.
(författare)
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Lags in behavioral change : A population based comparison of cardiovascular risk behavior in Poland and Sweden.
- 2006
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Ingår i: Central European Journal of Public Health. - : National Institute of Public Health. - 1210-7778 .- 1803-1048. ; 14:2
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Tidskriftsartikel (refereegranskat)abstract
- One thousand and twenty Polish men and women and 1,011 Swedish men and women aged 50 and recruited through primary health care took part in a survey relating to their knowledge of health-related behaviour, attitudes to health-related behaviour and self-reported risk behaviour. The results reveal that Poles know as much about cardiovascular risk factors as Swedes, but that Swedes feel that it is more important to change their dietary habits and to influence factors in the working environment to avoid the risk of developing CVD than did Poles. Swedes also displayed less risk behaviour than Poles and more Swedes than Poles had successfully stopped smoking. These findings suggest that differences in stages of health-related behavior that have previously been observed at an individual level may sometimes also be discerned at a national level.
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| 9. |
- Andersson, Per
(författare)
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Predicting Health Behaviour – Population-Based Studies of Knowledge and Behaviour Related to Cardiovascular Diseases
- 2006
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The overall aim was to study factors that affect behaviour related to CVD (cardiovascular diseases). Study I tested whether gender, education and so-cioeconomic status correlated to knowledge about risk factors, and Study II studied knowledge and risk behaviour from a national perspective (Sweden versus Poland). Furthermore, Study III examined whether obese people dif-fered from people of normal weight regarding knowledge about risk factors, and Study IV examined whether risk behaviour is affected by personal ex-perience of illness and family history of CVD. The studies are population-based with cross-sectional design. Data were obtained by questionnaires and by screening results of risk factors related to CVD. The studies were carried out among 50-year old men and women in Västmanland, Sweden (n=1011) and in Wroclaw, Poland (n=1043).The results show that women are more knowledgeable than men about the risk factors for CVD, and that low education is associated with insufficient knowledge about CVD (Study I). The discrepancy between knowledge and behaviour was greater among the Poles than it was among the Swedes (Study II). Obese individuals did not differ significantly from individuals with a normal weight regarding knowledge of cardiovascular risk factors when education was controlled for (Study III). Individuals with a personal experience of illness may be more inclined to change smoking behaviour than the average person (Study IV).In conclusion, knowledge about risk factors for CVD varies with education, gender and, to a certain degree, nationality. However, knowledge does not only consist of the conditions of behaviour change. The results in the thesis substantiate theories suggesting that change in risk behaviour is a process over time. Predictors of risk behaviours on the individual level as well as national level are of importance, and needs to be considered in the every day practice of health care professionals.
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| 10. |
- Andersson, Per, et al.
(författare)
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The effects of family history and personal experiences of illness on the inclination to change health-related behaviour
- 2009
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Ingår i: Central European Journal of Public Health. - : National Institute of Public Health. - 1210-7778 .- 1803-1048. ; 17:1, s. 3-7
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the present study was to examine how a personal experience of illness and a family history of cardiovascular disease (CVD), adjusted for sex, level of education and nationality, affect risk behaviour. Participants were 1,011 and 1,043, 50-year-old men and women from Sweden and Poland, respectively, who were recruited from a primary health care screening programme. Family history, personal experience of illness and risk behaviour (smoking and exercise habits, BMI level) were self-reported. The results showed that smoking behaviour was affected by a personal experience of illness but not by a family history of CVD. No effects of these variables were found on the remaining risk-related variables tested in this study. These results suggest that individuals with a personal experience of illness may be more inclined to change smoking behaviour than the average person. Smoking prevention strategies may therefore benefit from targeting this group in particular.
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