Childhood community-acquired pneumonia

Background: Community-acquired pneumonia is a leading cause of morbidity and mortality in children worldwide. New, rapid methods are needed to improve the microbiologic diagnosis of pneumonia in clinical practice. The increasing incidence of parapneumonic empyema in children accentuates the importance of the identification of the causative agent and clinical predictors of empyema. Aims and methods: Two prospective studies were conducted to find feasible diagnostic methods for the detection of causative agents of pneumonia. The usefulness of pneumolysin-targeted real-time PCR in the diagnosis of pneumococcal disease was studied in children with pneumonia and empyema, and the clinical utility of induced sputum analysis in the microbiologic diagnosis of pneumonia was investigated in children with pneumonia. In addition, two retrospective clinical studies were performed to describe the frequency and clinical profile of influenza pneumonia in children and the frequency, clinical profile and clinical predictors of empyema in children. Results: Pneumolysin-PCR in pleural fluid significantly improved the microbiologic diagnosis of empyema by increasing the detection rate of pneumococcus almost tenfold to that of pleural fluid culture (75 % vs. 8 %). In whole blood samples, PCR detected pneumococcus in only one child with pneumonia and one child with pneumococcal empyema. Sputum induction provided good-quality sputum specimens with high microbiologic yield. Streptococcus pneumoniae (46 %) and rhinovirus (29 %) were the most common microbes detected. The quantification results of the paired sputum and nasopharyngeal aspirate specimens provided support that the majority of the bacteria (79 %) and viruses (55 %) found in sputum originated from the lower airways. Pneumonia was detected in 14 % of children with influenza infection. A history of prolonged duration of fever, tachypnea, and pain on abdominal palpation were found to be independently significant predictors of empyema. Conclusions: Pneumolysin-targeted real-time PCR is a useful and rapid method for the diagnosis of pneumococcal empyema in children. Induced sputum analysis with paired nasopharyngeal aspirate analysis can be of clinical value in the microbiologic diagnosis of pneumonia. Influenza pneumonia is an infrequent and generally benign disease in children with rare fatalities. Repeat chest radiograph and ultrasound imaging are recommended in children with pneumonia presenting with clinical predictors of empyema and in children with persistent fever and high CRP levels during hospitalization.

Epidemiological studies of childhood and adolescence headache

The main purpose of this study was to examine the changes in the prevalence, incidence, and characteristics of headache in childhood and adolescence. In addition, the predictors of the change in the occurrence of childhood headache and the association between adolescent headache and behavior were studied. The occurrence and characteristics of headache were investigated as part of a prospective follow-up study, where 6-year-old children and their families (n=1132) were followed to the age of 12-years (n=1126). The study design entailed both a cohort and case-control group. The incidence of headache and the association between headache and behavior were studied in another cohort, consisting of 11-year-old twins (n=5393), who were followed to the age of 17 (n=4159). The prevalence rates of headache increased during the follow-up, especially in boys whose mothers suffered from frequent headache. The incidence rates of frequent headache changed the most in girls between ages of 11 and 14. Early-onset migraine and tension-type headache were equal predictors of migraine at age 12. The age-related changes observed in pain localization, concurrent symptoms and triggers were considerable. Headache frequency was significantly associated with externalizing and internalizing problem behaviors and adaptive behaviors as rated by parents, but only with externalizing problem behaviors as rated by teachers. Headache both in children and adolescents is characterized by its changing nature. Its prevention and treatment should take familial, environmental and psychosocial aspects into account.

Memories of My Childhood

Soitinnus: Ork.

Virus Infections in Early Childhood, Cow’s Milk Formula Exposure and Genetic Predisposition in the Development of Diabetes-Associated Autoimmunity

Varhaislapsuuden virusinfektioiden, lehmänmaitopohjaisen äidinmaitovastikeen ja geneettisen alttiuden merkitys diabetekseen liittyvän autoimmuniteetin kehittymisessä Tyypin 1 diabetes on autoimmuunisairaus, joka syntyy haiman insuliinia tuottavien beta-solujen tuhouduttua elimistön oman immuunipuolustusjärjestelmän hyökkäyksen seurauksena. Sekä perimän että ympäristötekijöiden arvellaan vaikuttavan tautiprosessiin, mutta taudin tarkkaa syntymekanismia ei tunneta. Tutkimuksen tarkoituksena oli selvittää varhaislapsuuden ympäristötekijöiden vaikutusta beta-soluautoimmuniteetin syntyyn, erityispaino tutkimuksessa oli ympäristötekijöiden yhteisvaikutuksessa sekä geneettisten riskitekijöiden ja ympäristötekijöiden vuorovaikutuksessa. Varhaislapsuudessa sairastettu sytomegalovirus- tai enterovirusinfektio ei lisännyt beta-soluautoimmuniteetin riskiä lapsilla, joilla on geneettisesti kohonnut riski sairastua tyypin 1 diabetekseen. Ennen puolen vuoden ikää sairastettu rotavirusinfektio lisäsi hieman tyypin 1 diabetekseen liittyvän autoimmuniteetin riskiä. Tarkemmassa analyysissa varhaislapsuuden enterovirusinfektio osoittautui kuitenkin autovasta-aineiden muodostumisen riskitekijäksi niiden lasten joukossa, jotka olivat saaneet lehmänmaitopohjaista äidinmaidon vastiketta ensimmäisten elinkuukausien aikana. Tämä löydös viittaa enterovirusinfektion ja lehmänmaitopohjaisen vastikkeen yhteisvaikutukseen tyypin 1 diabetekseen liittyvän autoimmuniteetin synnyssä. Löydösten mukaan PTPN22 geenin C1858T polymorfismi vaikuttaa CD4+ T solujen aktivaatioon ja proliferaatiovasteeseen, 1858T alleeliin liittyy alentunut T-soluresepto-rivälitteinen aktivaatio. 1858T alleelin kantajuuteen liittyy lisäksi lisääntynyt autovasta-aineiden ja kliinisen diabeteksen ilmaantuvuus. Tämä yhteys rajoittui yksilöihin, jotka olivat altistuneet lehmänmaitopohjaiselle vastikkeelle ennen kuuden kuukauden ikää. Tulosten mukaan sekä ympäristötekijöiden väliset yhteisvaikutukset että perimä vaikuttavat yksittäisen ympäristötekijän merkitykseen tyypin 1 diabetekseen liittyvän autoimmuniteetin synnyssä. Nämä yhteisvaikutukset ympäristötekijöiden kesken ja perimän ja ympäristötekijöiden välillä selittävät aiemmin julkaistujen tulosten ristiriittaisuutta tutkimuksissa, joissa on analysoitu vain yhden ympäristötekijän vaikutusta diabeteksen ilmaantuvuuteen.

Childhood Overweight - Predictors, Consequences and Prevention

Childhood overweight has become more prevalent during the past three decades. The aim of the present study was to examine possible predictors of childhood overweight and to evaluate the effect of individualised, biannual dietary and lifestyle counselling, with onset in infancy and primary aim at decreasing serum LDLcholesterol, on the development of overweight and related comorbidities. The study was part of the Special Turku coronary Risk factor Intervention Project (STRIP), in which 7-month-old children were randomised into an intervention group (N=540) or to a control group (N=522). The children in the control group were followed up along with the intervention group but they did not receive the individualised counselling. At the age of 15 years, 11.9 % of girls and 13.7 % of boys were overweight. The most important predictors of overweight at age 15 years were paternal weight status at the child’s age 7 months, rapid weight gain during the first two years of life, and early adiposity rebound. Leptin, a protein secreted by adipocytes, did not predict the development of overweight. Homozygosity for the overweight-associated FTO gene variant was associated with increased BMI and risk of overweight in children older than 7 years of age. The intervention given in the STRIP trial was not intense enough to overcome the effect of the FTO genotype. Although the intervention given in the STRIP trial had no significant effect on the proportion of overweight girls and boys, it did reduce the number and clustering of overweight-related cardiometabolic risk factors. This study showed that parental weight status, rapid weight gain early in life, and having two risk alleles in the FTO gene are strongly associated with overweight in adolescence. Biannual dietary and lifestyle counselling is not intense enough to prevent overweight but it has beneficial effects on the overweight-related cardiometabolic risk.

In search of Lost Childhood

The article is located at the Daily Sun's editorial section's subsection "Post-Log."

Metabolic syndrome in young adults – prevalence, childhood predictors and association with subclinical atherosclerosis

Background: Metabolic syndrome (MetS) is a cluster of cardiovascular risk factors including central obesity, insulin resistance, impaired glucose tolerance, hypertension and dyslipidemia. The prevalence of MetS is increasing worldwide in all age groups. MetS is associated with increased risk of cardiovascular disease and type 2 diabetes mellitus. Aims: The aim of the present study was to investigate the prevalence, secular trends and childhood predictors of MetS in young adults. Furthermore, the relations between MetS and subclinical atherosclerosis were studied and whether apolipoproteins (apo) B and A-I, C-reactive protein (CRP) and type II secretory phospholipase A2 (sPLA2) were associated with MetS, and to what extent the atherogenicity of MetS was explained by these factors. Participants and Methods: The present thesis is part of the large scale population-based, prospective study, the Cardiovascular Risk in Young Finns Study. The first cross-sectional study was conducted in 1980 and included 3,596 participants aged 3-18 years. Carotid and brachial ultrasound studies were performed for 2,283 of these participants in 2001 and 2,200 of these participants in 2007. Results: The overall prevalence of MetS in young adults aged 24-39 years in 2001 was 10-15 % and 6 years later in 30-45 year-old adults it was 15-23 % depending on the MetS definition used. Between the years 1986 and 2001, MetS prevalence increased from 1.0 % to 7.5 % (p<0.0001) in 24-year-old participants that was mostly driven by the increased central obesity. Participants with MetS had increased carotid intima-media thickness (cIMT) and decreased carotid elasticity compared to those without the syndrome. Impaired brachial flow-mediated dilatation (FMD) was not related to MetS but it modified the relationship between MetS and cIMT (P for interaction 0.023). High levels of apoB, CRP, sPLA2 and low levels of apoA-I associated with MetS in young adults. In prospective analysis both MetS and high apoB predicted (P<0.0001) incident high cIMT, defined as cIMT>90th percentile and/or plaque. The association between MetS and incident high cIMT was attenuated by ~40 % after adjustment with apoB. Conclusions: MetS is common in young adults and increases with age. Screening for risk factors, especially obesity, at an early life stage could help identify children and adolescents at increased risk of developing MetS and cardiovascular disease later in life. MetS identifies a population of young adults with evidence of increased subclinical atherosclerosis. Impaired brachial endothelial response is not a hallmark of MetS in young adults, but the status of endothelial function modifies the association between metabolic risk factors and atherosclerosis. In addition, the atherogenicity of MetS in this population assessed by incident high cIMT appears to be substantially mediated by elevated apoB.

Health Related Quality of Life after Childhood Cancer - A Finnish Nationwide survey

The purpose of this Finnish epidemiological nationwide cross-sectional study was to evaluate the Health Related Quality of Life (HRQL) of young people that have survived childhood cancer at least four years after cancer diagnosis. The study aims were (1) to increase knowledge and understanding about the relationship between childhood cancer and its treatment and HRQL of childhood cancer survivors and (2) to identify survivors who need and could benefit from ongoing long-term follow-up, as well as (3) to identify what kind of aftercare the childhood cancer survivors will possibly need. HRQL and fatigue of currently still young survivors of extracranial childhood malignancies were evaluated with self-reports and parent proxy reports. HRQL was measured with age-appropriate generic instruments: PedsQL™, SF-36, 15D, 16D and 17D. Fatigue for children and adolescents aged below 18 years was measured with the PedsQL™ Multidimensional Fatigue Scale Finnish version. PedsQL™ parent-proxy and the PedsQL™ Multidimensional Fatigue Scale Parentproxy instruments were used to assess the perception of the parents on HRQL and fatigue of their children and adolescents. Postal-survey questionnaires were mailed to 852 childhood cancer survivors aged 11-27 years and their randomly selected gender-, age and living-place matched controls, as well as under 18-year-old children´s parents. A total of 474 survivors, 595 controls, 209 survivor’s parent and 253 control’s parent replied. The mean age of survivors at the time of the study was 18.4 years. The mean length of survival was 12.3 years, and the mean age at diagnosis 5.5 years. The most of the Finnish childhood cancer survivors evaluated that their HRQL as good. Survivors rated their HRQL equal or higher than their controls. The only dimension where the survivors scored poorer than the controls was the 15D mobility dimension. Survivors of childhood cancer did not suffer from significant fatigue. There were subgroups of childhood cancer survivors who had poorer level of HRQL, and suffered from fatigue more than the reference group. The demographic factors that associated with poorer HRQL were female gender, greater weight, living alone, need of remedial education, an additional non-cancer diagnosis, survivors with siblings, and self-reported unhappiness. Disease-related factors that associated with poorer HRQL were higher age at the time of diagnosis, the diagnosis of Wilms tumor, neuroblastoma, or osteosarcoma, and treatment with stem cell transplantation. The factors associated with more fatigue in survivors were male gender, older age at evaluation, the need of remedial education at school, lower overall average grade in the latest school marks report, length of survival more than 10 years, lower HRQL-scores, and a sarcoma diagnosis. However, all the used demographic and disease related factors explained only about one third of the variation in the HRQL scores. In open questions, the survivors were most worried about their physical health, but were also worried about their mental health, cancer inheritance, late-effects, and fertility and relapse issues. It seems that there are subgroups of survivors who need and could benefit from ongoing long-term follow-up. In the future, the survivors of childhood cancer need more information about their physical and mental health, as well as on their cancer inheritance, possible late-effects including fertility issues, and on the risk of relapse.

Administration of Bifidobacterium animalis subsp. lactis BB-12 and xylitol with a novel pacifier in early childhood

Probiotic bifidobacteria are used in the prevention and treatment of childhood diseases. On the other hand, these bacteria are also connected to dental caries. The purpose of the present work was to test a food supplement containing Bifidobacterium animalis subsp. lactis BB-12 (B. lactis BB-12) and xylitol, and to investigate its health effects, properties and safety when used in a novel pacifier in early childhood. In a double-blind, placebo-controlled trial, newborn infants (n=163) were assigned randomly to receive B. lactis BB-12, xylitol, or sorbitol from the age of 1– 2 monthsto 2 years with a pacifier or a spoon. Children were followed up to four years of age. A part of the parents participating in the clinical trial evaluated the feasibility of the novel administration method. The pattern of tablet release from the pouch of the pacifier was tested in adults. The food supplement tablet containing B. lactis BB-12 and xylitol could be delivered in a safe and controlled way with the novel pacifier. The early administration of B. lactis BB-12 did not result in permanent oral colonization of this probiotic or affect the colonization of mutans streptococci in early childhood. Moreover, B. lactis BB-12 did not increase the occurrence of caries. Controlled administration of B. lactis BB-12 significantly reduced the incidence of respiratory infections during the first eight months of life in a Finnish population with breastfed infants. To conclude, administration of B. lactis BB-12 in early childhood is safe with regard to the future dental health of the child. In addition, B. lactis BB-12 may add to the protection against respiratory infections provided by human breast milk in infancy.

Children at psychiatric risk and their families in Bucharest, in the context of 25 years of changes after December 89’ Romanian Revolution

The aim of the present dissertation was to capture a picture of child and adolescent mental health in Romania, in the context of almost 25 years of changes following the Romanian Revolution of December ’89. A three-part study was carried out in order to provide consistent answers to the pre-defined objectives: to appraise the development of child and adolescent mental health services in Romania (Part I), to explore the characteristics of clinically-referred patients in a Romanian child and adolescent psychiatry department (Part II), to examine the children’s mental health state and its connections with family functioning and associated risk factors (Part III). A multi-method research approach was used, comprising one qualitative analysis and two quantitative research studies. Part I consisted of a comparative qualitative analysis of the answers given by 10 mental health professionals at a 12-questions open ended interview about the current situation in child and adolescent mental health in Romania, on three topics: changes, challenges, solutions. Part II involved a descriptive quantitative analysis of certain variables (e.g. age, gender, primary diagnosis, co-morbidities, time of hospitalization) conducted on the patients who had been admitted to the Child and Adolescent Psychiatry Department at “Prof. Dr. Alexandru Obregia” Psychiatry Hospital, Bucharest in 1991 and in 2013. Part III was conducted on 342 subjects enrolled in two clinical groups and one school group, this study being performed through a cross-sectional analysis on multi-informant child and adolescent mental health problems and competencies (CBCL, YSR, SDQ P, SDQ SR) and their interrelation with household information (HQ) and family functioning (FAD). Outlining the results it can be stated that: 1) The CAMH System in Romania is definitely set on the path of reorganization, including a higher involvement of beneficiaries and of the community. 2) The characteristics of the admitted patients have changed significantly during the last almost 25 years since `89 December Revolution, under the influence of word wide trends in child psychiatry and of administrative aspects of the mental health network in Romania. 3) The rates of main diagnoses and co-morbidities confirm the reports in literature, with Autism Spectrum Disorder being the most frequent childhood psychiatric disorders in this study. 4) The children’s mental health problems in the psychiatry group are comparable to those reported for other clinical populations. 5) Significant score differences were observed according to various household features and also meaningful associations between a child’s clinical status and different aspects of family functioning. The Romanian Child and Adolescent Psychiatry has started to adopt the norms and standards of the European Union. In the 25 years that have elapsed after the 1989 Revolution, many changes have occurred in Romanian CAMH, but many unresolved issues have also risen. Therefore, the major contribution of this thesis is that it provides a coherent and updated overview of the present-day situation from three different perspectives- those of mental healthcare professionals, the one observed in clinical patients and the one reported by children’s families.

Cardiovascular health from childhood to adulthood – with special reference to early vascular changes. The Cardiovascular Risk in Young Finns Study

Background: Recent recommendations aim to improve cardiovascular health (CVH) by encouraging the general population to meet positive and modifiable ideal CVH metrics: not smoking, being physically active, and maintaining normal weight, blood pressure, blood glucose and total cholesterol levels and a healthy diet. Aims: The aim of the present study was to report the prevalence of ideal CVH in children and young adults and study the associations of CVH metrics with markers of subclinical atherosclerosis. Participants and methods: The present thesis is part of the Cardiovascular Risk in Young Finns Study (Young Finns Study). Data on associations of CVH metrics and subclinical atherosclerosis were available from 1,898 Young Finns Study participants. In addition, joint analyses were performed combining data from the International Childhood Cardiovascular Cohort (i3C) Consortium member studies from Australia and the USA. Results: None of the participants met all 7 CVH metrics and thus had ideal CVH in childhood and only 1% had ideal CVH as young adults. The number of CVH metrics present in childhood and adulthood predicted lower carotid artery intima-media thickness, improved carotid artery distensibility and lower risk of coronary artery calcification. Those who improved their CVH status from childhood to adulthood had a comparable risk of subclinical atherosclerosis to participants who had always had a high CVH status. Conclusions: Ideal CVH proved to be rare among children and young adults. A higher number of ideal CVH metrics and improvement of CVH status between childhood and adulthood predicted a lower risk of subclinical atherosclerosis.

Cardiovascular health and fitness after childhood acute lymphoblastic leukaemia

The last few decades have turned childhood acute lymphoblastic leukaemia (ALL) from a virtually incurable disease to a disease with 80–90% survival rates. However, this has not come without a cost. Various late effects of the treatment are nowadays well acknowledged, and the survivors have increased cardiovascular (CV) morbidity and mortality. While the treatment of ALL may have direct toxic effects on various organ systems, lifestyle factors affect the CV risk of the survivors as well. Data on CV health and fitness after treatment with common Nordic protocols since 1986 has been scarce. This thesis aimed to study CV health and fitness and the effects of a 3-month exercise intervention in 16–30-year-old long-term survivors of childhood ALL. Fitness was poor especially in female survivors. One third reported ≤1h of moderate physical activity (PA) weekly. While the levels of other CV risk factors were similar in survivors and controls, attenuations in vascular endothelium and cardiac function were found when using advanced echocardiographic methods. The exercise programme improved fitness, insulin resistance, endothelial function as well as measures of cardiac function. While the results do not allow definite conclusions on whether the subclinical signs of cardiac and vascular endothelial dysfunction are due to the treatment of ALL or sedentary lifestyle/poor fitness after treatment, the results are interesting and emphasize the effects of PA in this population. The results indicate beneficial effects of PA on the heart health in ALL survivors and suggest that they should be encouraged to physically active lifestyle.