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L Bodin

Publications and source records attributed to L Bodin.

At least 19 recordsLinked to original sources

Breastfeeding enhances the antibody response to Hib and Pneumococcal serotype 6B and 14 after vaccination with conjugate vaccines.

BACKGROUND: This study was performed in order to investigate the relationship between breastfeeding and the antibody response after vaccination with conjugate vaccines against Hib and pneumococcal diseases. METHODS: This was an open non-randomised multi-centre study enrolling 101 healthy Swedish infants. PncCRM was administered concomitantly with DTaP/IPV/Hib at 3, 5, and 12 months at separate site. Duration of breastfeeding was calculated for days of almost exclusive as well as of total (any form of) breastfeeding. RESULTS: At 13 months of age 6 out of 83 children did not reach 0.2mug/ml against serotype 6B, and five of these were breastfed less than 90 days (Fisher's Exact test, P=0.011). Four children did not reach 1mug/ml against Hib and all those were breastfed less than 90 days (Fisher's Exact test, P=0.008). One month after the second dose, at 6 months of age, children breastfed 90 days or more showed significantly higher GMC against serotype 14 (P=0.003). CONCLUSION: This study indicates that children exclusively breastfed 90 days or more might get a better serological protection against Hib, and the pneumococcal serotypes 6B and 14 after vaccination, compared to children less breastfed.

Antibodies, Bacterial↗

Expression of idiotypic antibodies-1 and -2 and breastfeeding in relation to antibody levels against Haemophilus influenzae type B in children.

The aim of the study was to determine the concentrations of serum antibodies against Haemophilus influenzae type b in preschool children in relation to the distribution of idiotypic antibodies 1 and 2 (Id-1 and Id-2) and the exposure to breastfeeding in infancy. Sera were obtained from 74 control children recruited in an earlier case-control study before the introduction of general Hib vaccination. Duration of breastfeeding was monitored, and prevalence of noninvasive infections was registered. Concentrations of IgG1 and IgG2 anti-Hib, as well as of total Id-1 and Id-2, were determined in ELISA. The expression of Id-1 antibodies increased with age in contrast to the Id-2 antibodies that were found only in children up to 24 months of age. Expression of Id-1 antibodies was positively correlated with higher anti-Hib levels of both the IgG1 and IgG2 isotype. Children expressing Id-2 antibodies showed higher IgG2 anti-Hib concentrations than those who did not have Id-2 (P = 0.001). The concentrations of neither Id-1 nor Id-2 antibodies were related to the duration of breastfeeding. Duration of breastfeeding was related to increased anti-Hib IgG2 in healthy children above 18 months of age. These study shows that the expression of idiotype-1 and idiotype-2 antibodies was associated with higher IgG2 anti-Hib concentration and that breastfeeding could enhance the anti-Hib IgG2 production in children.

Antibodies, Bacterial↗

No associations between PrP genotypes and reproduction traits in INRA 401 sheep.

In this study, the potential association of PrP genotypes with ewe reproductive traits and lamb growth traits was investigated. Data were included on ewes and lambs of the INRA 401 breed from the Bourges-La Sapinière INRA experimental farm. This breed was chosen because of good breeding (prolificacy and maternal abilities) and carcass qualities, and the large number of available animals with performance records and PrP genotypes. Ewes were categorized into 3 PrP genotype classes: ARR homozygous, ARR heterozygous, and animals without any ARR haplotype. Two analyses differing in the traits considered were carried out. Firstly, the potential association of the PrP genotype of ewes with their reproduction traits (fertility, litter size, and ovulation rate) was studied. The data included 801, 779, and 587 genotyped ewes for fertility, litter size, and ovulation rate, respectively. Secondly, the association of the PrP genotype of the ewes with growth traits of their lambs (birth weight, ADG between 10 and 30 d of age) was investigated. The data included 3,749 and 3,512 lambs for birth weight and ADG, respectively. The different traits were analyzed using an animal model, where the PrP genotype effect was included as a fixed effect. The reproductive traits were modeled under a probit or a threshold approach. The results of this study indicate no evidence of an association between PrP genotypes and reproductive and growth traits. It is unlikely that selection for scrapie resistance will have an effect on the reproductive or performance traits studied in the INRA 401 breed.

Animals↗

Anti-Saccharomyces cerevisiae antibodies in twins with inflammatory bowel disease.

BACKGROUND AND AIMS: An increased occurrence of anti-Saccharomyces cerevisiae antibodies (ASCA) is reported in unaffected members of families with Crohn's disease. Whether ASCA is a familial trait due to genetic factors or is caused by exposure to environmental factors is unknown. To assess the genetic influence of ASCA we studied its occurrence in a twin population. PATIENTS AND METHODS: ASCA were analysed in 98 twin pairs with inflammatory bowel disease and were related to clinical phenotype and CARD15/NOD2 genotype. RESULTS: ASCA were more common in Crohn's disease than in ulcerative colitis (40/70 (57%) twins v 5/43 (12%) twins). Associations with ileal Crohn's disease, stricturing/penetrating behaviour, and young age, but not CARD15/NOD2 were confirmed. ASCA were found in 1/20 (5%) healthy siblings in discordant monozygotic pairs with Crohn's disease compared with 7/27 (26%) in discordant dizygotic pairs. Using the intraclass correlation coefficient (ICC), no agreement in ASCA titres was observed in discordant twin pairs with Crohn's disease, in monozygotic (ICC = -0.02) or dizygotic (ICC = -0.26) pairs. In contrast, strong agreement was seen within concordant monozygotic twin pairs with Crohn's disease (ICC = 0.76). CONCLUSIONS: These findings question the concept of ASCA as a marker of genetic susceptibility for Crohn's disease. The agreement in ASCA titres within concordant monozygotic twin pairs with Crohn's disease, suggests that the level of increase is genetically determined. We propose that ASCA are a marker of a response to an environmental antigen and that a specific gene(s) other than CARD15/NOD2 determines the level of response and perhaps also specific phenotypic characteristics.

Adult↗

Duodenal intraepithelial lymphocyte-count revisited.

BACKGROUND: The number of intraepithelial lymphocytes in the duodenum was determined 30 years ago, the suggested normal upper limit being 40 lymphocytes per 100 epithelial cells. METHODS: Duodenal mucosa was analysed from 18 healthy individuals and 56 consecutive patients biopsied because of epigastralgia (17 cases), diarrhoea (10 cases), oesophagitis (10 cases), iron-deficiency (9 cases) and B12-deficiency (10 cases) showing normal histology, along with 10 cases of active coeliac disease. The biopsies were fixed in 4% formalin overnight and embedded in paraffin. Three micrometre thick sections were stained with haematoxylin and eosin and CD3. At least 300 epithelial cells were counted, the number of intraepithelial lymphocytes was given as the mean/100 epithelial cells. Extensive statistical analyses were performed. RESULTS: In the healthy individuals the mean number (s) of intraepithelial lymphocytes/100 epithelial cells was 10.8 (2.6) and 13.2 (3.8) in H&E and CD3 stained sections, respectively. The upper limit of the confidence interval for CD3 staining was 29. There was no significant difference between normal individuals and the clinical groups, with the exception of coeliac disease. CONCLUSION: Two-step analysis of intraepithelial lymphocyte-determination is suggested: (a) semi-quantitative estimate on H&E-stained sections (normal ratio of 1:5 between lymphocytes and enterocytes; upper normal limit 20 lymphocytes) and (b) CD3-staining and counting if intraepithelial lymphocytosis is suspected. The upper normal range of intraepithelial lymphocytes is set at 25 CD3+ lymphocytes/100 epithelial cells. Values between 25 and 29 are regarded as 'borderline' and 30 or more represent pathologic intraepithelial lymphocytosis in the duodenum.

Adolescent↗

Coagulase-negative staphylococcal sepsis as a predictor of bronchopulmonary dysplasia.

AIM: To determine whether sepsis caused by coagulase-negative staphylococci (CoNS) is a risk factor for developing bronchopulmonary dysplasia (BPD) in premature newborns. METHODS: All newborns born at < or = 30 wk of gestation at Orebro University Hospital during 1994-2001 with clinical sepsis caused by CoNS (group A, n = 22) or by other bacteria (group B, n = 17) were included and compared with premature newborns without sepsis (group C, n = 53). Clinical sepsis was defined as a positive blood culture (monoculture) plus clinical symptoms and laboratory findings. BPD was defined as treatment with oxygen > 21% for at least 28 d. RESULTS: The incidence of BPD differed between the three groups, as follows: CoNS sepsis (A) 64%, other sepsis (B) 41% and control (C) 24%. The difference between the control group and the sepsis groups was highly significant (p = 0.006). In a univariate model the crude estimates of relative risk (RR) for occurrence of BPD increased with presence of sepsis and particularly with presence of sepsis with CoNS (A: RR 2.6, 95% CI 1.5-4.6, p = 0.001; B: RR 1.7, CI 0.8-3.5, p = 0.17). When regression was performed with two additional predictive variables in multivariate models including sepsis, gestational age and mechanical ventilation (group A: RR 1.5, CI 1.1-2.0, p = 0.004; group B: RR 0.9, CI 0.6-1.4, p = 0.67), the estimates were lower. CONCLUSION: The relative risk for BPD is significantly increased in premature newborns with sepsis caused by CoNS compared with those with sepsis caused by other bacteria and compared with premature newborns with no sepsis.

Anti-Infective Agents↗

Nasal histamine reactivity among adolescents in a remediated moisture-damaged school--a longitudinal study.

UNLABELLED: In a previous study, in the spring of 1995, we found that teachers, who had been working for several years in a moister-damaged school, 1 year after the renovation still reported a higher frequency of complaints and symptoms and showed significantly higher mucosal histamine reactivity compared with teachers in a control school, although the school seemed to be properly renovated. A longitudinal study of 90 randomly selected senior high school students entering the two schools was initiated to exclude or verify if the indoor air still exerted an irritant effect on the upper airways of an earlier unexposed group. The students went through a nasal histamine provocation test and answered a questionnaire on three occasions, in 1995, 1996 and 1997. No significant differences in the nasal histamine provocation curves for the students at the target school and those at the control school could be shown from start to endpoint of the study period. Neither was there any differences concerning perceived indoor air or mucosal symptoms between the target and the control group and technical measurements showed no noteworthy differences between the two schools. In conclusion, this study indicates that based on both technical and objective medical measures, the current indoor air in the remediated moisture-damaged school does not exert an irritant effect on the upper airway mucosa of the students. A 2-year follow-up of the teachers showed a decreased reactivity to histamine, giving further support to this statement. The increased mucosal reactivity observed among the teachers is probably a result of the previous long-term exposure to building dampness. No differences were seen between atopic and non-atopic students. PRACTICAL IMPLICATIONS: Persistent symptoms and increased nasal mucosal reactivity among personnel in a remediated damp building does not necessary imply an inadequate renovation. A longitudinal study with registration of subjective (questionnaires) and objective (nasal histamine reactivity) data of an earlier unexposed group residing in the same building further contributes to the evaluation whether the renovation was successful or not.

Adolescent↗

Elemental versus polymeric enteral nutrition in paediatric Crohn's disease: a multicentre randomized controlled trial.

AIM: To compare the efficacy and safety of an elemental and a polymeric diet as the primary therapy for active Crohn's disease in children. METHODS: In a randomized, non-blind, multicentre, controlled trial in Sweden, 16 children with Crohn's disease received Elemental 028 Extra (E028E) and 17 Nutrison Standard (NuS). Remission rates (Paediatric Crohn's Disease Activity Index (PCDAI) < 10 or a PCDAI decrease of 40% or 15 points of initial level) were compared at 6 wk. RESULTS: There was no significant difference between the two groups in remission rate at 6 wk (intent-to-treat analysis): E028E 11/16 (69%) and NuS 14/17 (82%) (p = 0.438). There was no difference in the decrease in PCDAI and CDAI between patients treated with E028E and those treated with NuS from 0 to 6 wk. Patients treated with NuS gained significantly more weight than patients treated with E028E (+2.5 kg; 95% CI 0.9, 4.1; p = 0.004), this difference remained when adjusting for maximum caloric intake per kilogram bodyweight (+2.9 kg; 95% CI 1.4, 4.5; p = 0.001). Concomitant disease, complications and side effects were seen in 5/33 patients (pyelonephritis, pneumonia, intraabdominal abscess, perianal abscess and borborygmi). CONCLUSION: E028E and NuS did not differ in terms of remission rate. Patients treated with NuS gained more weight than patients with E028E. Polymeric diet may be superior to elemental diet in the treatment of paediatric Crohn's disease where the primary aim is to increase the patient's weight.

Adolescent↗

A short-term follow-up of treatment outcome in groups of uncooperative child dental patients.

AIM: To evaluate the short-term follow-up outcome in four subgroups of uncooperative child dental patients referred to a specialist paediatric dental clinic in Sweden. METHODS: Seventy children, classified into four groups (based on fear, temperament, behaviour and verbal intelligence), were followed-up at their public dental clinics after termination of specialist dental treatment. Questionnaire assessments of children's dental and general fear, parental dental fear, emotional stress, locus of control and parenting efficacy were made by parents pre and post treatment and at follow-up and were analysed within and between groups. At follow-up, parents rated their children's coping and procedure stress, while treatment acceptance was rated by the dentists. RESULTS: Decreases in child dental fear were maintained at follow-up, although a third of children still had moderate or high dental fear. For those children who had been classified into the externalising, impulsive group, an increased risk of non-acceptance (RR=3.7) was indicated. The risk of dental fear at follow-up was increased for the group of fearful, inhibited children (RR=3.8). For the study group as a whole a poorer follow-up outcome could be predicted by avoidance behaviour (OR 12.9-16.6) and moderate or high post treatment dental fear (OR 6.5- 21.3). CONCLUSIONS: Fearful, inhibited child dental patients may need, due to dental fear, extra attention even after successful dental treatment at a specialist clinic. Externalising, impulsive children constitute a special challenge for dentistry. The continued need for adjusted management after termination of specialist treatment can be predicted from avoidance behaviour and post treatment dental fear scores.

Analysis of Variance↗

Treatment outcome in subgroups of uncooperative child dental patients: an exploratory study.

OBJECTIVES: The principal aims of this study were to evaluate the treatment outcome in subgroups of uncooperative child dental patients and to test the validity of these subgroups, which were based on fear and personality characteristics. DESIGN: An exploratory, intervention study using quantified questionnaire, interview and observation data. SAMPLE AND METHODS: Eighty-six 4 to 12-year-old uncooperative child dental patients (of whom 81 were divided retrospectively into four subgroups) and their accompanying parents were followed up during treatment at a specialist paediatric dental clinic in Sweden. Treatment was based on behaviour management techniques, supported by nitrous oxide/oxygen sedation if necessary. At baseline, parents answered a questionnaire including questions on child dental and general fear, temperament and behaviour, and parental dental fear, emotional stress, locus of control, parenting efficacy and attitudes to dental care, some of which were repeated post-treatment. The treating dentist rated child behaviour according to the acceptance of a maximum of 14 treatment steps at each visit. RESULTS: Approximately 90% of all children managed to undergo the dental treatment. Child dental fear and parental emotional stress decreased during treatment. Externalizing, impulsive children showed lower acceptance. In fearful, inhibited children, integrated use of sedation appeared to facilitate acceptance. Validity of the subgroups characterized as 'fearful, extrovert, outgoing', 'fearful, inhibited' and 'externalizing, impulsive' was supported, while heterogeneity within the group of 'non-fearful, extrovert, outgoing' children made validation difficult. CONCLUSION: Fear and personality characteristics may serve as diagnostic aids when planning treatment of uncooperative child dental patients. Controlled outcome studies using differentiated treatment methods for children with different fear and personality profiles are needed.

Anesthetics, Inhalation↗

Prolificacy genes in sheep: the French genetic programmes.

It has been demonstrated that variations in litter size or ovulation rate in different breeds of sheep can be associated with the segregation of several major genes. This set of natural mutants constitutes a valuable resource to determine key points in the biochemical pathways controlling the development of ovarian follicles. The French genetic programmes were devised to identify two of these genes: the Booroola (FecB) and Lacaune genes. The FecB prolific mutation corresponds to a non-conservative mutation (Q249R) in the intracellular kinase-signalling domain of the bone morphogenetic protein receptor type IB (BMPR-IB) gene. The Lacaune gene is situated on ovine chromosome 11. Positional cloning is currently in progress to identify the relevant gene and mutation. A similar approach, limited to linkage testing of candidate genes, is proposed to classify the different prolificacy genes in sheep.

Animals↗

Nasal mucosal histamine reactivity among young students and teachers, having no or prolonged exposure to a deteriorated indoor climate.

BACKGROUND: In a study performed in the spring of 1995, we found a significantly greater nasal mucosal histamine reactivity among teachers, who had worked for several years in a recently renovated moisture-damaged school, than in those in a control school. In the present study we investigated the students who begun their high-school studies at both schools in the autumn of 1995 and compared them with the teachers as regards mucosal reactivity, atopy and symptoms. METHODS: Twenty-eight teachers in the target school, 18 teachers in the control school and 45 students from each school underwent a nasal histamine provocation test and a skin-prick test. They also answered a standardized questionnaire. RESULTS: The teachers in both schools had more marked nasal mucosal histamine reactivity at the lowest provocation concentrations than the students. The histamine provocation curve of the target school teachers had consistently higher values than that of the students (P = 0.0001), but its slope and shape were similar (P = 0.15), while the slope of the provocation curve of the control school teachers was flatter. However, there was only a borderline significance in this respect compared to the students (P = 0.07). Teachers with a dry and crusty appearance of the nasal mucosa on anterior rhinoscopy reacted more strongly to histamine provocation than those without this finding (P = 0.0004). There was a significantly higher frequency of skin-prick test positivity (SPT+) among the students (P = 0.03). There were no significant differences in nasal mucosal histamine reactivity between atopic and non-atopic subjects out of pollen season. CONCLUSIONS: Teachers had a significantly greater mucosal histamine reactivity than the students, whereas the latter had a significantly higher frequency of atopy. These results are compatible with an age-related pattern of mucosal reactivity. A crusty appearance of the nasal mucosa seems to predispose to an increase in histamine reactivity. There were no significant differences according to histamine reactivity between atopic and non-atopic subjects.

Adolescent↗

Slowly decreasing mucosal hyperreactivity years after working in a school with moisture problems.

In our first study in 1995, teachers, who had worked in a water-damaged school for more than 5 years, were tested for nasal histamine reactivity by rhinostereometry. They were found to have significantly increased reactivity compared with teachers in a school without these indoor-climate problems. This finding could not be explained by differences in atopy or other personal characteristics. In this 2-year follow-up study (1995-97), 26 of 28 teachers in the target school and all 18 teachers in the control school, who participated in the initial study, accepted to take part. They were tested with the same histamine provocation procedure and answered the same questionnaire as 2 years earlier. Technical measurements of temperature, relative humidity, dust, carbon dioxide, formaldehyde and total volatile organic compounds (TVOC) were carried out in both schools during the time period between the two test occasions. In this provocation test, the teachers from the repaired water-damaged school still demonstrated an increased reactivity to histamine compared with the teachers in the control school, but the difference between the growth curves of the provocation tests was less than in 1995. Teachers in the target school still complained about the indoor air quality more than their colleagues, although the complaints were less common. No major differences were observed in the technical investigation between the two schools and the measurements were all within values usually seen in schools in northern countries. Our conclusion is that the observed nasal mucosal hyperreactivity among the teachers in the renovated water-damaged school seems to persist over years and only slowly decrease even after successful remedial measures have been taken.

Adult↗

Can severity-of-illness indices for neonatal intensive care predict outcome at 4 years of age?

AIM: To test four neonatal severity-of-illness indices (CRIB, NTISS, SNAP, SNAP-PE) for their ability to predict short- and long-term outcome in very low-birthweight infants receiving neonatal intensive care. METHODS: Data on 240 newborns with birthweights below 1500 g from two Swedish neonatal units were collected. The predictive values of the indices for an adverse outcome in the neonatal period and at 4 y of age were compared with those of gestational age and birthweight. RESULTS: An early adverse outcome (in-hospital death, severe haemorrhagic-ischaemic brain lesion, retinopathy, chronic lung disease) was better predicted with CRIB (area under ROC curve (Az) = 0.87) and SNAP-PE (Az = 0.86), while SNAP-PE was best for predicting late problems (deviations in growth and psychomotor development, neurosensory impairment, difficulties in concentration, and impairment in vision, and hearing) (Az = 0.63). All indices predicted the early outcome better than the outcome at the 4-y follow-up. Severity-of-illness indices can be used as instruments to follow and improve the level of neonatal intensive care, but unfortunately seem to be of little value in long-term follow-up. CONCLUSION: CRIB and SNAP-PE indices are better in predicting hospital mortality than birthweight. None of the systems can predict adverse outcome at 4 y of age.

Child, Preschool↗

Sheep as a mammalian model of genetic variability in melatonin.

Large inter-individual variability in plasma melatonin concentration at night is a common mammalian trait. In sheep, it varies from < 50 pg ml(-1) to > 800 pg ml(-1) but is very consistent within individuals. This inter-individual variability is under strong genetic control, which depends on melatonin secretion from the pineal gland, but not on melatonin catabolism. This genetic variability does not originate from differences in the synthetic enzymes or from a difference in melatonin secretion per mg of tissue, but from a difference in pineal size, which is highly variable among lambs of the same age and live weight. The genetic difference among lambs is already expressed at birth and is due to a difference in the number of pinealocytes rather than in their size. Pineal size and number of pinealocytes correlate strongly with plasma melatonin concentrations. The variability in pineal mass is not associated with the variability in any other organ (for example, the pituitary). The identification of genetic markers in the genome associated with the size of the pineal gland may lead to identification of genes involved in development of the mammalian pineal gland. Divergent selection of sheep on the basis of plasma melatonin concentrations could be used to constitute a mammalian model for extreme plasma concentrations.

Animals↗

Mutation in bone morphogenetic protein receptor-IB is associated with increased ovulation rate in Booroola Mérino ewes.

Ewes from the Booroola strain of Australian Mérino sheep are characterized by high ovulation rate and litter size. This phenotype is due to the action of the FecB(B) allele of a major gene named FecB, as determined by statistical analysis of phenotypic data. By genetic analysis of 31 informative half-sib families from heterozygous sires, we showed that the FecB locus is situated in the region of ovine chromosome 6 corresponding to the human chromosome 4q22-23 that contains the bone morphogenetic protein receptor IB (BMPR-IB) gene encoding a member of the transforming growth factor-beta (TGF-beta) receptor family. A nonconservative substitution (Q249R) in the BMPR-IB coding sequence was found to be associated fully with the hyperprolificacy phenotype of Booroola ewes. In vitro, ovarian granulosa cells from FecB(B)/FecB(B) ewes were less responsive than granulosa cells from FecB(+)/FecB(+) ewes to the inhibitory effect on steroidogenesis of GDF-5 and BMP-4, natural ligands of BMPR-IB. It is suggested that in FecB(B)/FecB(B) ewes, BMPR-IB would be inactivated partially, leading to an advanced differentiation of granulosa cells and an advanced maturation of ovulatory follicles.

Amino Acid Sequence↗

High early patency of saphenous vein graft for coronary artery bypass harvested with surrounding tissue.

BACKGROUND: Surgical trauma to the saphenous vein, used as a conduit for coronary artery bypass grafting, affects their occlusion rate. This study evaluates the early patency of saphenous vein grafts harvested with a pedicle of surrounding tissue that protects the vein from spasm and trauma. METHODS: Fifty-two patients underwent coronary artery bypass grafting with saphenous veins harvested with surrounding tissue. Forty-five patients, who received a total of 124 vein grafts and 42 left internal mammary arteries, underwent angiographic follow-up at a mean of 18 months (9 to 24 months). RESULTS: Patency for saphenous vein grafts was 95.4% and for left internal mammary arteries, it was 93.3%. Twenty-nine of 30 (96.7%) vein grafts anastomosed to arteries 2.0 mm or more, 65 of 67 (97%) grafts to 1.5 mm, and 10 of 13 (77%) anastomosed to 1-mm arteries were patent. Nineteen of 22 (86.4%) vein grafts with flow rates 20 mL/min or less, 32 of 34 (94.1%) with flow between 20 and 40 mL/min, and 50 of 51 (98%) with flow more than 40 mL/min were patent. Other registered surgical and clinical factors did not contribute to vessel occlusion. CONCLUSIONS: Early patency rate of saphenous veins harvested with surrounding tissue is very high, even in saphenous vein grafts demonstrating low blood flow. Preservation of graft endothelium using our harvesting technique may be the explanation of this success.

Adult↗