Lisbeth Slunga Birgander

High Prevalence of Chlamydia pneumoniae DNA in Peripheral Blood Mononuclear Cells in Patients with Cardiovascular Disease and in Middle-Aged Blood Donors

Nested polymerase chain reaction (nPCR) demonstrated the presence of Chlamydia pneumoniae-specific DNA in peripheral blood mononuclear cells (PBMC). PBMC samples were obtained from 103 consecutive patients (62 male, 41 female) aged 22-85 years (mean, 64) admitted for coronary angiography because of suspected coronary heart disease and from 52 blood donors (43 male, 9 female) aged 40-64 years (mean, 49). Of the 101 evaluable patients, 60 (59%) were identified by nPCR assay as C. pneumoniae DNA carriers; C. pneumoniae-specific microimmunofluorescence (MIF) serology confirmed exposure to the bacterium in 57 (95%) of the 60 nPCR-positive patients. Among the 52 blood donors, the nPCR assay identified 24 (46%) C. pneumoniae DNA carriers, all of whom were positive by C. pneumoniae-specific serology. Thirty-two patients (32%) and 23 blood donors (44%) were MIF antibody-positive but repeatedly nPCR-negative; Bartonella henselae- or Bartonella quintana-specific antibodies were not detected among any of these subjects. In this study, C. pneumoniae DNA was common in PBMC of patients with coronary heart disease and in middle-aged blood donors.

Lp(a) lipoprotein, IgG, IgA and IgM antibodies to Chlamydia pneumoniae and HLA class II genotype in early coronary artery disease

The associations previously found between lipoprotein(a) (Lp(a)) levels and atherosclerotic disorders, diabetes, rheumatoid arthritis and renal diseases suggest that Lp(a) may be involved in autoimmune reactions. The relation found between Lp(a) levels and the HLA class II genotype in males with early coronary artery disease (CAD) further support that assumption. It was suggested that an autoimmune process, perhaps triggered by a concomitant intracellular infection may occur especially in patients with inherited high Lp(a) levels in combination with certain inherited HLA class II genotypes. In this study a Chlamydia pneumoniae IgG titer > or = 32 was significantly more common (P = 0.036) in CAD patients than in matched controls. This is in agreement with previous reports by other investigators. In addition, an IgG titer > or = 256 in combination with an Lp(a) level > or = 120 mg/l was found to occur significantly more often (P = 0.011) in male patients than in male controls. Certain HLA class II DR genotypes in combination with high Lp(a) levels and C. pneumoniae titers occurred more frequently in both male and female patients than in controls. Some combinations were very common in male patients, and the difference in comparison with male controls was highly significant.

Burnout, working conditions and gender - results from the northern Sweden MONICA Study

BackgroundSick-leave because of mental and behavioural disorders has increased considerably in Sweden since the late nineties, and especially in women. The aim of this study was to assess the level of burnout in the general working population in northern Sweden and analyse its relation to working conditions and gender.MethodsIn this cross-sectional study the survey from the MONICA-study (Monitoring of Trends and Determinants in Cardiovascular Disease) in northern Sweden 2004 was used. A burnout instrument, the Shirom Melamed Burnout Questionnaire (SMBQ), was incorporated in the original survey which was sent to a random sample of 2500 individuals with a response rate of 76%. After including only actively working people, aged 25-64 years, our study population consisted of 1000 participants (497 women and 503 men). ANOVA and multiple linear regression models were used.ResultsThe prevalence of a high level of burnout (SMBQ >4.0) was 13%. Women had a higher level of burnout than men with the most pronounced difference in the age group 35-44 years. In both sexes the level of burnout decreased with age. Demand and control at work, and job insecurity were related to burnout. In women the level of education, socioeconomic position, work object, and working varying hours were of importance. Interaction effects were found between sex and work object, and sex and working hours. In a multiple regression analysis almost half of the gender difference could be explained by work related and life situational factors.ConclusionsWorking life conditions contributed to the level of burnout in this actively working sample from the general population in northern Sweden. Especially in women, socioeconomic position was associated with burnout. The high level of burnout in women compared to men was partly explained by more unfavourable working conditions and life situational factors. Efforts to level out gender differences in burnout should probably focus on improving both working and socioeconomic conditions for women.

Women's hearts--stress management for women with ischemic heart disease: explanatory analyses of a randomized controlled trial.

PURPOSE This randomized controlled study aimed to evaluate the effects on psychosocial variables of a 1-year group-based cognitive-behavioral stress management program developed specifically for women with ischemic heart disease. METHODS The present explanatory (per protocol) analyses include 80 women who were randomized to a 1-year cognitive-behavioral stress management program and 86 who were randomized to usual care (age = 35-77 years). Data were obtained before randomization and after 1 year, when the intervention group had completed the program. RESULTS There were no statistically significant differences between the intervention and usual care groups in the psychosocial endpoints at randomization. Both groups improved in all psychosocial variables during the 1-year study period, but the rate of improvement was significantly greater in the intervention group for self-rated stress behavior (P = .006) and vital exhaustion (P = .03). Although changes were in favor of the treatment group also for depressive mood and quality of life, the rates of improvement between the 2 groups did not reach statistical significance (P = .23 and P = .10, respectively). CONCLUSION A 1-year cognitive-behavioral stress management program designed specifically for women improved psychological well-being in some aspects in comparison with usual care.

Lipoprotein(a), Chlamydia pneumoniae, leptin and tissue plasminogen activator as risk markers for valvular aortic stenosis

AIMS The aim of the present study was to identify risk markers for the development of valvular aortic stenosis (AS). Lipoprotein(a) (Lp(a)) and Chlamydia pneumoniae IgG antibody titres in plasma and in circulating immune complexes as well as leptin and tissue plasminogen activator (t-PA) in plasma were studied. METHODS AND RESULTS One hundred and one patients (41 women and 60 men, mean age 71+/-8 years) with significant AS and 101 age- and sex-matched controls were included in this study. All patients underwent aortic valve replacement at the University Hospital in Umeå, Sweden. The controls had no symptoms of cardiovascular disease and they were examined echocardiographically. An Lp(a) level >or=480 mg x l(-1), a C. pneumoniae-specific IgG titre >or=1/128, a high leptin level and a high t-PA mass concentration in plasma were identified as risk markers for AS. A strong synergism between Lp(a) and C. pneumoniae IgG antibodies in circulating immune complexes was found. CONCLUSION Our data indicate that a chronic C. pneumoniae infection and a high plasma Lp(a) level might influence and aggravate aortic heart valve sclerosis via the formation of circulating immune complexes. The present study also strongly suggests an association between high plasma leptin, t-PA mass concentration and AS.

Psychosocial distress and impaired quality of life - targets neglected in the secondary prevention in women with ischaemic heart disease

Background Secondary prevention in patients with ischaemic heart disease (IHD) focusing on classical risk factors has been less successful in women than in men. Previous studies have suggested that psychosocial factors may be new targets for secondary prevention. In the present study, psychosocial factors have been compared in women with and without IHD. Methods and subjects Using a cross-sectional comparison, classical cardiovascular risk factors and self-rated stress behaviour, vital exhaustion, stressful life events and quality of life were assessed in 198 women (age 35–77 years) who had IHD and a population-based sample of 206 women (age 45–74 years) without IHD. Results Control of classical risk factors was most often adequate in women with IHD. The prevalence of smoking was 9% in women with versus 18% in women without IHD (P < 0.001), blood pressure levels were similar, and a very large share of women with IHD were on treatment with anti-thrombotic, anti-hypertensive and/or lipid-lowering drugs (P < 0.001 compared with women free of IHD). In contrast, women with IHD scored significantly worse than women without IHD in self-rated stress behaviour (P = 0.003 after adjustment for other possible determinants), and in vital exhaustion (P = 0.003). In univariate analyses, quality of life was significantly worse in women with IHD. Stressful life events did not differ between the two groups. Conclusions In this group of women with IHD, control of classical risk factors was good, whereas control of psychosocial risk factors was clearly inadequate. Secondary prevention by psychosocial intervention in women with IHD should be evaluated in randomized controlled trials. Eur J Cardiovasc Prevention Rehab 10:258–266

Effects of Qigong in patients with burnout: a randomized controlled trial.

OBJECTIVE To evaluate the efficacy of Qigong in rehabilitation for patients with burnout. DESIGN Prospective, randomized controlled trial. SUBJECTS Eighty-two patients (68 women and 14 men, mean age 44.3 (standard deviation 9.1) years) diagnosed with burnout. METHODS Basic care was offered to both the intervention and the control group. Patients in the intervention group received basic care and, in addition, performed Qigong twice a week for 12 weeks. Psychological variables, health-related quality of life, perceived relaxation and physical measurements were assessed at baseline and after the intervention period. RESULTS No significant difference in treatment efficacy between the groups was found by either intention-to-treat or per-protocol analyses. Both groups improved significantly over time, with reduced levels of burnout, fatigue, anxiety and depression, and increased dynamic balance and physical capacity. CONCLUSION In this study, a Qigong intervention twice a week for 12 weeks had no additional effect beyond basic care for patients with burnout.

Thrombomodulin as a Marker for Bleeding Complications During Warfarin Treatment

BACKGROUND The major adverse effect of warfarin treatment is hemorrhage. Several risk factors for bleeding complications are also risk factors for thromboembolic events, making the clinical decision to initiate or withhold anticoagulant treatment difficult. Specific markers that solely identify patients at high risk of bleeding would have great clinical impact. This study aimed to test if thrombomodulin (TM) concentrations were associated with bleeding complications, cardiovascular events, or mortality in long-term anticoagulant-treated patients. METHODS In a longitudinal cohort study we followed up 719 patients receiving warfarin treatment for a mean duration of 4.2 years. All bleeding complications causing hospitalization were registered and classified. Soluble TM antigen (sTM) concentration in plasma was measured with an enzyme-linked immunosorbent assay method. RESULTS During the follow-up time, 113 clinically relevant bleeding events and 73 major bleeding events occurred. Increased concentration of sTM was associated with both clinically relevant bleeding and major bleeding events after adjustment for age. In the multivariable models, hazard ratios for the highest tertiles compared with the lowest were 2.29 (95% confidence interval, 1.35-3.89) and 2.33 (95% confidence interval, 1.21-4.48), respectively. No association between sTM concentration and nonfatal ischemic cardiovascular events or all-cause mortality was found. CONCLUSIONS Increased levels of sTM are associated with bleeding complications during warfarin treatment but not with cardiovascular events or all-cause mortality. Soluble TM antigen concentration has potential as a new specific marker to identify patients at high risk of bleeding during warfarin treatment.

Cognitive-behavioural stress management does not improve biological cardiovascular risk indicators in women with ischaemic heart disease : a randomized-controlled trial

Objectives.  Psychosocial factors, such as stress and vital exhaustion, are associated with an increased risk of cardiovascular events, and women report more psychosocial ill‐being after an acute myocardial infarction than men. We have earlier shown that a cognitive‐behavioural intervention in women with ischaemic heart disease (IHD) improved psychosocial well‐being. In the present study, we tested the hypothesis that the improvement in psychosocial well‐being is associated with an improvement in biochemical indicators of cardiovascular risk.