LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 94

Search options

  1. Article ; Online: Comparison of two prediction models in a clinical setting to predict growth in prepubertal children on recombinant growth hormone.

    Ly, Helena-Jamin / Lindberg, Anders / Fors, Hans / Dahlgren, Jovanna

    Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society

    2023  Volume 68, Page(s) 101523

    Abstract: Objective: Prediction models that calculate the growth response in children on recombinant growth hormone (GH) have shown to be helpful tools in deciding who should start treatment, as identifying GH deficiency can be a challenge. The aim of the study ... ...

    Abstract Objective: Prediction models that calculate the growth response in children on recombinant growth hormone (GH) have shown to be helpful tools in deciding who should start treatment, as identifying GH deficiency can be a challenge. The aim of the study is to compare two prediction models; the KIGS (Pfizer International Growth Study) prediction models which are more accessible and the Gothenburg model which has previously been clinically validated.
    Design: All prepubertal patients who commenced GH treatment at Queen Silvia Children's Hospital in Gothenburg during a 13-year-period were candidates for the study. Children were excluded if suspected syndrome, malignant disease, chronic disease, or poor adherence to treatment were found. The KIGS model and the Gothenburg model were used to make predictions. Data was obtained from medical charts for the period from birth to the end of the first year of treatment. The predicted height outcome was compared against observed.
    Results: The study included 123 prepubertal children (76 males). The average age at treatment start and standard deviation (SD) was 5.7 (1.8) years. Correlation analyses were performed between predicted growth by both the Gothenburg and KIGS models versus the first year observed growth response showing strong correlations of r = 0.990 and r = 0.991 respectively with studentized residuals of 0.10 (0.81) for the Gothenburg model and 0.03 (0.96) for the KIGS model.
    Conclusion: We found that both the Gothenburg model and the KIGS model are equivalent when applying to our clinical cohort. Both models are very precise, hence it is encouraged to use either based on accessibility for the clinic.
    MeSH term(s) Child ; Humans ; Male ; Body Height ; Dwarfism, Pituitary/drug therapy ; Growth Disorders/diagnosis ; Growth Disorders/drug therapy ; Growth Hormone ; Human Growth Hormone/therapeutic use ; Syndrome ; Female
    Chemical Substances Growth Hormone (9002-72-6) ; Human Growth Hormone (12629-01-5)
    Language English
    Publishing date 2023-01-07
    Publishing country Scotland
    Document type Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1436781-6
    ISSN 1532-2238 ; 1096-6374
    ISSN (online) 1532-2238
    ISSN 1096-6374
    DOI 10.1016/j.ghir.2023.101523
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Short-time least squares spectral analysis of pass-by noise in water from a rigid inflatable boat.

    Lindberg, Anders / Lövgren, Bo / Asp, Jennie / Antoni, Jérôme / Gällström, Andreas

    The Journal of the Acoustical Society of America

    2022  Volume 151, Issue 3, Page(s) 1932

    Abstract: This paper investigates least squares spectral analysis as a tool to analyze non-stationary signals from pass-by noise measurements in water. The spectral analysis involves successive least squares fitting of a finite Fourier series to approximate the ... ...

    Abstract This paper investigates least squares spectral analysis as a tool to analyze non-stationary signals from pass-by noise measurements in water. The spectral analysis involves successive least squares fitting of a finite Fourier series to approximate the observation in a piecewise manner. The least squares spectral analysis is used to search the signals for first- and second-order periodicity as well as the presence of fundamental periodicity. A first-order analysis reveals line components in the signals, whereas a second-order analysis reveals periodic amplitude modulations. Analysis with a higher-order finite Fourier series reveals harmonic structures in the signals. The main contribution of this paper is the model of a magnitude-squared cosine wave which can be used to analyze second-order periodicity. The developed short-time least squares spectral analysis is illustrated on noise radiated from a rigid inflatable boat in shallow water.
    Language English
    Publishing date 2022-04-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 219231-7
    ISSN 1520-8524 ; 0001-4966
    ISSN (online) 1520-8524
    ISSN 0001-4966
    DOI 10.1121/10.0009847
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: Misstron mot vaccinationer måste bemötas med respekt. Trots vaccinkritik är anslutningen till barnvaccinationsprogrammet unikt hög.

    Lindberg, Anders

    Lakartidningen

    2013  Volume 110, Issue 16, Page(s) 822–824

    Title translation Mistrust of vaccinations must be treated with respect. Adherence to the childhood vaccination program is uniquely high despite criticism of vaccination.
    MeSH term(s) Attitude to Health ; Humans ; Immunization Programs/statistics & numerical data ; Medication Adherence ; Sweden ; Trust ; Vaccination/adverse effects ; Vaccination/psychology ; Vaccination/standards
    Language Swedish
    Publishing date 2013-04
    Publishing country Sweden
    Document type Journal Article
    ZDB-ID 391010-6
    ISSN 1652-7518 ; 0023-7205
    ISSN (online) 1652-7518
    ISSN 0023-7205
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Computation of sound radiation by a driver in a cabinet using a substitute source approach.

    Lindberg, Anders / Pavić, Goran

    The Journal of the Acoustical Society of America

    2015  Volume 138, Issue 2, Page(s) 1132–1142

    Abstract: Sound radiation by a driver set in a rigid closed cabinet is modeled analytically using the principle of wave superposition. The driver-cabinet assembly is replaced by an array of volumeless substitute sources-monopoles-confined within its surface. The ... ...

    Abstract Sound radiation by a driver set in a rigid closed cabinet is modeled analytically using the principle of wave superposition. The driver-cabinet assembly is replaced by an array of volumeless substitute sources-monopoles-confined within its surface. The role of substitute sources is to reproduce the sound field exterior to the surface as close to the original field as possible. The frequency dependent positions and strengths of substitute monopoles are optimized by an iterative search procedure aimed at matching the prescribed surface boundary conditions of the original source. The time-consuming optimization of monopole positions is carried out at narrowband center frequencies reducing the computational cost without significant loss of accuracy. The consistency of computed results is verified by checking the power output through the cabinet surface. Modeling is done for anechoic and semi-anechoic conditions. The model has been validated experimentally in a semi-anechoic room with satisfactory results using a mid-range driver set in a closed-box baffle.
    Language English
    Publishing date 2015-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 219231-7
    ISSN 1520-8524 ; 0001-4966
    ISSN (online) 1520-8524
    ISSN 0001-4966
    DOI 10.1121/1.4927691
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Using a spontaneous profile rather than stimulation test makes the KIGS idiopathic growth hormone deficiency model more accessible for clinicians.

    Duchén, Karel / Lindberg, Anders / Kiplok, Kaire / Kriström, Berit

    Acta paediatrica (Oslo, Norway : 1992)

    2017  Volume 106, Issue 9, Page(s) 1481–1486

    Abstract: Aim: Children treated with a growth hormone (GH) for idiopathic growth hormone deficiency (IGHD) may be monitored with the first-year prediction model from the Pfizer International Growth Database (KIGS) using auxology, age, GH dose and the maximum GH ... ...

    Abstract Aim: Children treated with a growth hormone (GH) for idiopathic growth hormone deficiency (IGHD) may be monitored with the first-year prediction model from the Pfizer International Growth Database (KIGS) using auxology, age, GH dose and the maximum GH concentration from a stimulation test (GH
    Methods: We studied 98 prepubertal Swedish children (78 boys) aged 2-12 years enrolled in KIGS. The first-year growth was predicted using the GH
    Results: The increased height observed in the first year was 0.74 standard deviation scores (SDS), and the studentised residuals for the predicted and observed growth with GH
    Conclusion: We validated the KIGS IGHD prediction model and found that the stimulated GH
    Language English
    Publishing date 2017-09
    Publishing country Norway
    Document type Journal Article
    ZDB-ID 203487-6
    ISSN 1651-2227 ; 0365-1436 ; 0803-5253
    ISSN (online) 1651-2227
    ISSN 0365-1436 ; 0803-5253
    DOI 10.1111/apa.13932
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Prediction models for short children born small for gestational age (SGA) covering the total growth phase. Analyses based on data from KIGS (Pfizer International Growth Database)

    Lindberg Anders / Ranke Michael B

    BMC Medical Informatics and Decision Making, Vol 11, Iss 1, p

    2011  Volume 38

    Abstract: Abstract Background Mathematical models can be developed to predict growth in short children treated with growth hormone (GH). These models can serve to optimize and individualize treatment in terms of height outcomes and costs. The aims of this study ... ...

    Abstract Abstract Background Mathematical models can be developed to predict growth in short children treated with growth hormone (GH). These models can serve to optimize and individualize treatment in terms of height outcomes and costs. The aims of this study were to compile existing prediction models for short children born SGA (SGA), to develop new models and to validate the algorithms. Methods Existing models to predict height velocity (HV) for the first two and the fourth prepubertal years and during total pubertal growth (TPG) on GH were applied to SGA children from the KIGS (Pfizer International Growth Database) - 1 st year: N = 2340; 2 nd year: N = 1358; 4 th year: N = 182; TPG: N = 59. A new prediction model was developed for the 3 rd prepubertal year based upon 317 children by means of the all-possible regression approach, using Mallow's C(p) criterion. Results The comparison between the observed and predicted height velocity showed no significant difference when the existing prediction models were applied to new cohorts. A model for predicting HV during the 3 rd year explained 33% of the variability with an error SD of 1.0 cm/year. The predictors were (in order of importance): HV previous year; chronological age; weight SDS; mid-parent height SDS and GH dose. Conclusions Models to predict growth to GH from prepubertal years to adult height are available for short children born SGA. The models utilize easily accessible predictors and are accurate. The overall explained variability in SGA is relatively low, due to the heterogeneity of the disorder. The models can be used to provide patients with a realistic expectation of treatment, and may help to identify compliance problems or other underlying causes of treatment failure.
    Keywords Computer applications to medicine. Medical informatics ; R858-859.7
    Subject code 333
    Language English
    Publishing date 2011-06-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  7. Article: Vaccinationer--primärprevention med problem.

    Lindberg, Anders

    Lakartidningen

    2004  Volume 101, Issue 28-29, Page(s) 2352–2354

    Title translation Vaccinations--primary prevention with problems.
    MeSH term(s) Attitude to Health ; Humans ; Mass Media ; Mass Vaccination/adverse effects ; Mass Vaccination/methods ; Mass Vaccination/standards ; Primary Prevention/methods ; Primary Prevention/standards ; Public Opinion ; Vaccination/adverse effects ; Vaccination/methods ; Vaccination/standards
    Language Swedish
    Publishing date 2004-07-08
    Publishing country Sweden
    Document type Journal Article
    ZDB-ID 391010-6
    ISSN 1652-7518 ; 0023-7205
    ISSN (online) 1652-7518
    ISSN 0023-7205
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Treatment with Growth Hormone in Noonan Syndrome Observed during 25 Years of KIGS: Near Adult Height and Outcome Prediction.

    Ranke, Michael B / Lindberg, Anders / Carlsson, Martin / Camacho-Hübner, Cecilia / Rooman, Raoul

    Hormone research in paediatrics

    2019  Volume 91, Issue 1, Page(s) 46–55

    Abstract: Background/aims: There is little information how rhGH treatment affects height in NS. This study aims to analyze data from the NS patients assembled in KIGS over 25 years.: Patients/methods: Of 613 (389 m/224 f) NS patients documented, 476 (302 m/174 ...

    Abstract Background/aims: There is little information how rhGH treatment affects height in NS. This study aims to analyze data from the NS patients assembled in KIGS over 25 years.
    Patients/methods: Of 613 (389 m/224 f) NS patients documented, 476 (302 m/174 f) were treated for 1 year, 237 (160 m/77 f) of which served to develop a 1st year height velocity (HV) prediction algorithm. One-hundred and forty (74 m/66 f) had reached near adult height (NAH). Factors affecting NAH on rhGH were determined.
    Results: At the start of rhGH, the NAH groups were (median, m, f) 11.0 and 10.3 years, with a height SDS of -3.2 and -3.8 SDS (Prader), respectively. The total gain after 6.3 and 5.6 years on rhGH (0.27 and 0.30 mg/kg/week) was 1.2 and 1.3 SDS. Age at the start of rhGH (negative), height at the start of rhGH, rhGH dose, number of rhGH injections/wk and birth weight (all positive) explained 36% of the variability of 1st year HV. Height at the start of rhGH, 1st year growth on rhGH, birth weight, and gender explained 74% of the variability of NAH. Causes for rhGH treatment discontinuation and adverse events were also analyzed.
    Conclusion: rhGH treatment increases NAH in NS. Prediction algorithms may optimize treatment in the future.
    MeSH term(s) Adolescent ; Adolescent Development/drug effects ; Adult ; Age Factors ; Body Height/drug effects ; Child ; Child Development/drug effects ; Female ; Follow-Up Studies ; Human Growth Hormone/administration & dosage ; Humans ; Male ; Noonan Syndrome/drug therapy ; Noonan Syndrome/pathology ; Noonan Syndrome/physiopathology
    Chemical Substances Human Growth Hormone (12629-01-5)
    Language English
    Publishing date 2019-04-02
    Publishing country Switzerland
    Document type Clinical Trial ; Journal Article ; Multicenter Study
    ZDB-ID 2537278-6
    ISSN 1663-2826 ; 1663-2818
    ISSN (online) 1663-2826
    ISSN 1663-2818
    DOI 10.1159/000498859
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Neuronal temperature perception induces specific defenses that enable

    Servello, Francesco A / Fernandes, Rute / Eder, Matthias / Harris, Nathan / Martin, Olivier M F / Oswal, Natasha / Lindberg, Anders / Derosiers, Nohelly / Sengupta, Piali / Stroustrup, Nicholas / Apfeld, Javier

    eLife

    2022  Volume 11

    Abstract: Hydrogen peroxide is the most common reactive chemical that organisms face on the microbial battlefield. The rate with which hydrogen peroxide damages biomolecules required for life increases with temperature, yet little is known about how organisms cope ...

    Abstract Hydrogen peroxide is the most common reactive chemical that organisms face on the microbial battlefield. The rate with which hydrogen peroxide damages biomolecules required for life increases with temperature, yet little is known about how organisms cope with this temperature-dependent threat. Here, we show that
    MeSH term(s) Animals ; Caenorhabditis elegans/physiology ; Hydrogen Peroxide/metabolism ; Temperature ; Caenorhabditis elegans Proteins/metabolism ; Sensory Receptor Cells/metabolism ; Perception
    Chemical Substances Hydrogen Peroxide (BBX060AN9V) ; Caenorhabditis elegans Proteins
    Language English
    Publishing date 2022-10-13
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, Non-U.S. Gov't
    ZDB-ID 2687154-3
    ISSN 2050-084X ; 2050-084X
    ISSN (online) 2050-084X
    ISSN 2050-084X
    DOI 10.7554/eLife.78941
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: A 15-year randomized controlled study of a reduced shrinkage stress resin composite.

    van Dijken, Jan W V / Lindberg, Anders

    Dental materials : official publication of the Academy of Dental Materials

    2015  Volume 31, Issue 9, Page(s) 1150–1158

    Abstract: Objectives: The aim of this randomized controlled study was to evaluate the long term effectiveness of a reduced shrinkage stress resin composite in Class II restorations. The material was compared intra-individually with a microhybrid resin composite.!# ...

    Abstract Objectives: The aim of this randomized controlled study was to evaluate the long term effectiveness of a reduced shrinkage stress resin composite in Class II restorations. The material was compared intra-individually with a microhybrid resin composite.
    Materials and methods: Each of 50 patients with at least one pair of two similar sized Class II cavities participated (22 female, 28 male, mean age 43 years, range 18-64). Each participant received in each pair, in a randomized way, one Class II restoration performed with a reduced shrinkage stress resin composite (InTen-S) and the other restoration with a microhybrid resin composite restoration (Point 4). Both restorations were placed with an etch-and-rinse bonding system and an oblique layering technique. A total of 106 restorations, 33 premolar and 73 molars, were placed. The restorations were evaluated blindly each year using modified USPHS criteria. The overall performance of the experimental restorations was tested after intra-individual comparison using the Friedmańs two-way analysis of variance test. The hypothesis was rejected at the 5% level.
    Results: At 15 years, 91 restorations were evaluated. The drop out frequency was 15 restorations (5 male, 3 female participants; 2 premolar and 13 molar restorations). Except for 2 participants, who reported slight symptoms during a few weeks after placement, no post-operative sensitivity was observed at the recalls. The overall success rate at 15 years was 77%. Twenty-one non acceptable restorations were observed during the 15 years follow up, 10 InTen-S (21.7%) and 11 Point 4 (24.4%) restorations (p>0.05). Annual failure rates for the resin composites were 1.5% and 1.6%, respectively. The main reasons for failure were secondary caries (8) and resin composite fracture (7). The differences between premolar vs. molar restorations and between restorations in male vs. female participants were not significant. Significant differences were observed between 2-surface vs. 3-surface restorations.
    Significance: During the 15-year follow up, the reduced shrinkage stress resin composite showed a good clinical durability in Class II cavities, but not significantly better than the control microhybrid resin composite. Secondary caries and material fracture were the main reasons of failure.
    MeSH term(s) Adolescent ; Adult ; Bicuspid/chemistry ; Composite Resins/chemistry ; Dental Caries/therapy ; Dental Cavity Preparation ; Dental Materials/chemistry ; Dental Restoration Failure ; Dental Restoration, Permanent ; Dental Stress Analysis ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Molar/chemistry ; Time Factors ; Young Adult
    Chemical Substances Composite Resins ; Dental Materials
    Language English
    Publishing date 2015-09
    Publishing country England
    Document type Clinical Trial ; Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
    ZDB-ID 605995-8
    ISSN 1879-0097 ; 0109-5641
    ISSN (online) 1879-0097
    ISSN 0109-5641
    DOI 10.1016/j.dental.2015.06.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top