• Hearing impairment after asphyxia and neonatal encephalopathy: a Norwegian population-based study 

      Hemmingsen, Dagny Elise; Moster, Dag; Engdahl, Bo Lars; Klingenberg, Claus (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-22)
      The purpose of this study is to evaluate the association between perinatal asphyxia, neonatal encephalopathy, and childhood hearing impairment. This is a population-based study including all Norwegian infants born≥36 weeks gestation between 1999 and 2014 and alive at 2 years (n=866,232). Data was linked from fve national health registries with follow-up through 2019. Perinatal asphyxia was defned ...
    • Hearing in schoolchildren after neonatal exposure to a high-dose gentamicin regimen 

      Hemmingsen, Dagny; Mikalsen, Camilla; Rydland Hansen, Alexander; Fjalstad, Jon Widding; Stenklev, Niels Christian; Klingenberg, Claus (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-31)
      <p>OBJECTIVE: To assess the association between gentamicin exposure in the neonatal period and hearing in school age. <p>METHODS: This study included children exposed to a high-dose (6 mg/kg) gentamicin regimen as neonates (2004–2012), invited for follow-up at school age, and a healthy age-matched control group. We assessed hearing with pure tone audiometry including the extended high-frequency ...
    • The immunogenicity and safety of Group B Streptococcal maternal vaccines: A systematic review 

      Bjerkhaug, Aline Uhirwa; Ramalingham, Shouwmika; Mboizi, Robert; Le Doare, Kirsty; Klingenberg, Claus (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-09)
      Purpose: To systematically review immunogenicity and safety data of maternal group B streptococcal (GBS) vaccines in published clinical trials until July 2023.<p> <p>Methods: EMBASE, MEDLINE, Cochrane Library and clinicaltrial.gov. databases were searched for clinical studies that reported immunogenicity and/or safety of GBS vaccine in non-pregnant adults, pregnant women and infants between 1st ...
    • The impact of gender, puberty, and pregnancy in patients with POLG disease 

      Hikmat, Omar; Naess, Karin; Engvall, Martin; Klingenberg, Claus; Rasmussen, Magnhild; Tallaksen, Chantal; Samsonsen, Christian; Brodtkorb, Eylert; Ostergaard, Elsebet; de Coo, Rene; Pias-Peleteiro, Leticia; Isohanni, Pirjo; Uusimaa, Johanna; Darin, Niklas; Rahman, Shamima; Bindoff, Laurence (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-18)
      <i>Objective</i> - To study the impact of gender, puberty, and pregnancy on the expression of POLG disease, one of the most common mitochondrial diseases known.<p> <p><i>Methods</i> - Clinical, laboratory, and genetic data were collected retrospectively from 155 patients with genetically confirmed POLG disease recruited from seven European countries. We used the available data to study the impact ...
    • Infection prevention guidelines and considerations for paediatric risk groups when reopening primary schools during COVID-19 pandemic, Norway, April 2020 

      Johansen, Tone Bjordal; Astrup, Elisabeth; Jore, Solveig; Nilssen, Hege; Dahlberg, Bente Barton; Klingenberg, Claus; Berg, AreStuwitz; Greve-Isdahl, Margrethe (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-04)
      In response to the coronavirus disease (COVID-19) pandemic, most countries implemented school closures. In Norway, schools closed on 13 March 2020. The evidence of effect on disease transmission was limited, while negative consequences were evident. Before reopening, risk-assessment for paediatric risk groups was performed, concluding that most children can attend school with few conditions requiring ...
    • Mental health and health related quality of life in mitochondrial POLG disease 

      Hikmat, Omar; Vederhus, Bente Johanne; Benestad, Merete Roineland; Engeset, Ida Malen E.; Klingenberg, Claus; Rasmussen, Magnhild; Tallaksen, Chantal; Brodtkorb, Eylert; Elgen, Irene Bircow; Bindoff, Laurence (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-23)
      We aimed to assess the impact of POLG disease on mental health and quality of life in 15 patients using the Symptom Checklist-90-R (SCL-90-R)and Short-Form 36 HealthSurvey (RAND-36). Wefound increased scores in all nine subscales of SCL-90-R, particularly phobic anxiety, depression and somatization. Further, patients reported considerably lower scores in all RAND-36 domains. This study revealed a ...
    • Metabolic responses in neonatal sepsis—A systematic review of human metabolomic studies 

      Bjerkhaug, Aline; Granslo, Hildegunn Norbakken; Klingenberg, Claus (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-13)
      Aim - To systematically review human metabolomic studies investigating metabolic responses in septic neonates.<p> <p>Methods - A systematic literature search was performed in the databases MEDLINE, EMBASE and Cochrane library up to the 1st of January 2021. We included studies that assessed neonatal sepsis and the following outcomes; (1) change in the metabolism compared to healthy neonates and/or ...
    • Modelling suggests limited change in the reproduction number from reopening Norwegian kindergartens and schools during the COVID-19 pandemic 

      Rypdal, Martin Wibe; Rypdal, Veronika Gjertsen; Jakobsen, Per Kristen; Ytterstad, Elinor; Løvsletten, Ola; Klingenberg, Claus; Rypdal, Kristoffer (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-25)
      <i>Background</i> - To suppress the COVID-19 outbreak, the Norwegian government closed all schools on March 13, 2020. The kindergartens reopened on April 20, and the schools on April 27 and May 11 of 2020. The effect of these measures is largely unknown since the role of children in the spread of the SARS-CoV-2 virus is still unclear. There are only a few studies of school closures as a separate ...
    • Penicillin for enhver pris? 

      Thaulow, Christian Magnus; Klingenberg, Claus (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-26)
      Barn i trassalderen og bitre penicillinblandinger fire ganger i døgnet er en vanskelig kombinasjon. Smalspektret antibiotika er gullstandarden, men må balanseres opp mot barnets ubehag og etterlevelse av behandlingen.
    • Performance of Expanded Newborn Screening in Norway Supported by Post-Analytical Bioinformatics Tools and Rapid Second-Tier DNA Analyses 

      Tangeraas, Trine; Sæves, Ingjerd; Klingenberg, Claus; Jørgensen, Jens; Kristensen, Erle; Gunnarsdottir, Gunnþórunn; Hansen, Eirik Vangsøy; Strand, Janne Maren; Lundman, Emma; Ferdinandusse, Sacha; Salvador, Cathrin Lytomt; Woldseth, Berit; Bliksrud, Yngve Thomas; Sagredo, Carlos; Olsen, Øyvind Edon; Berge, Mona C.; Trømborg, Anette Kjoshagen; Ziegler, Anders; Zhang, Jin Hui; Sørgjerd, Linda Karlsen; Ytre-Arne, Mari Eknes; Hogner, Silje; Løvoll, Siv M.; Olavsen, Mette R. Kløvstad; Navarrete, Dionne; Gaup, Hege Junita; Lilje, Rina; Zetterström, Rolf H.; Stray-Pedersen, Asbjørg; Rootwelt-Revheim, Terje; Rinaldo, Piero; Rowe, Alexander D.; Pettersen, Rolf D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-27)
      In 2012, the Norwegian newborn screening program (NBS) was expanded (eNBS) from screening for two diseases to that for 23 diseases (20 inborn errors of metabolism, IEMs) and again in 2018, to include a total of 25 conditions (21 IEMs). Between 1 March 2012 and 29 February 2020, 461,369 newborns were screened for 20 IEMs in addition to phenylketonuria (PKU). Excluding PKU, there were 75 true-positive ...
    • Predictors fpr expired CO2 in neonatal bag-mask ventilation at birth: observational study 

      Holte, Kari; Ersdal, Hege Langli; Eilevstjønn, Joar; Thallinger, Monica; Linde, Jørgen Erland; Klingenberg, Claus; Holst, René; Jatosh, Samwel; Kidanto, Hussein; Stordal, Ketil (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-26)
      <p><i>Background - </i>Expired carbon dioxide (ECO<sub>2</sub>) indicates degree of lung aeration immediately after birth. Favourable ventilation techniques may be associated with higher ECO<sub>2</sub> and a faster increase. Clinical condition will however also affect measured values. The aim of this study was to explore the relative impact of ventilation factors and clinical factors on ECO<sub>2</sub> ...
    • Sars-CoV-2 hos barn og ungdom i Norge: Påvist smitte, sykehusinnleggelser og underliggende tilstander 

      Størdal, Ketil; Bakken, Inger Johanne Landsjøåsen; Greve-Isdahl, Margrethe; Klingenberg, Claus; Helland, Eyvind; Nystad, Wenche; Hjellvik, Vidar; Gulseth, Hanne Løvdal (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-24)
      BAKGRUNN - Barn og unge har lavere risiko for sykdom forårsaket av sars-CoV-2. Vi beskriver forekomsten av påvist smitte og innleggelser hos barn og unge under 20 år i Norge, og spesifikt blant dem med underliggende tilstander.<p> <p>MATERIALE OG METODE - Helsedirektoratet har i samarbeid med Folkehelseinstituttet etablert et datauttrekk for å overvåke koronavirusutbruddet. Data fra ...
    • Simplifying the clinical classification of polymerase gamma (POLG) disease based on age of onset; studies using a cohort of 155 cases 

      Hikmat, Omar; Naess, Karin; Engvall, Martin; Klingenberg, Claus; Rasmussen, Magnhild; Tallaksen, Chantal; Brodtkorb, Eylert; Østergaard, Elsebet; de Coo, Irenaeus F.M.; Pias-Peleteiro, Leticia; Isohanni, Pirjo; Uusimaa, Johanna; Darin, Niklas; Rahman, Shamima; Bindoff, Laurence (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-06)
      <i>Background</i> - Variants in <i>POLG</i> are one of the most common causes of inherited mitochondrial disease. Phenotypic classification of POLG disease has evolved haphazardly making it complicated and difficult to implement in everyday clinical practise. The aim of our study was to simplify the classification and facilitate better clinical recognition.<p><p> <i>Methods</i> - A multinational, ...
    • Single sustained inflation followed by ventilation leads to rapid cardiorespiratory recovery but causes cerebral vascular leakage in asphyxiated near-term lambs 

      Sobotka, Kristina S.; Hooper, Stuart B.; Crossley, Kelly J.; Ong, Tracey; Schmölzer, Georg M.; Barton, Samantha K.; McDougall, Annie R.A.; Miller, Suzie L.; Tolcos, Mary; Klingenberg, Claus; Polglase, Graeme R. (Journal article; Tidsskriftartikkel; Peer reviewed, 2016)
      Background A sustained inflation (SI) rapidly restores cardiac function in asphyxic, bradycardic newborns but its effects on cerebral haemodynamics and brain injury are unknown. We determined the effect of different SI strategies on carotid blood flow (CaBF) and cerebral vascular integrity in asphyxiated near-term lambs. Methods Lambs were instrumented and delivered at 139 ± 2 d gestation ...
    • Staphylococcus borealis sp. Nov., isolated from human skin and blood 

      Ronessen Pain, Maria; Wolden, Runa; Jaén-Luchoro, Daniel; Salvà-Serra, Francisco; Iglesias, Beatriz Piñeiro; Karlsson, Roger; Klingenberg, Claus; Cavanagh, Jorunn Pauline (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-13)
      When analysing a large cohort of Staphylococcus haemolyticus , using whole-genome sequencing, five human isolates (four from the skin and one from a blood culture) with aberrant phenotypic and genotypic traits were identified. They were phenotypically similar with yellow colonies, nearly identical 16S rRNA gene sequences and initially speciated as S. haemolyticus based on 16S rRNA gene sequence and ...
    • Staphylococcus borealis sp. nov., isolated from human skin and blood 

      Pain, Maria; Wolden, Runa; Jaén-Luchoro, Daniel; Salvà-Serra, Francisco; Iglesias, Beatriz Piñeiro; Karlsson, Roger; Klingenberg, Claus; Cavanagh, Jorunn Pauline (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-13)
      When analysing a large cohort of <i>Staphylococcus haemolyticus</i>, using whole-genome sequencing, five human isolates (four from the skin and one from a blood culture) with aberrant phenotypic and genotypic traits were identified. They were phenotypically similar with yellow colonies, nearly identical 16S rRNA gene sequences and initially speciated as <i>S. haemolyticus</i> based on 16S rRNA gene ...
    • Stratification of Culture-Proven Early-Onset Sepsis Cases by the Neonatal Early-Onset Sepsis Calculator: An Individual Patient Data Meta-Analysis 

      Achten, Niek B.; Plötz, Frans B.; Klingenberg, Claus; Stocker, Martin; Bokelaar, Robin; Bijlsma, Merijn; Giannoni, Eric; van Rossum, Annemarie M.C.; Benitz, William E. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-03)
      Objectives - To provide a comprehensive assessment of case stratification by the Neonatal Early-Onset Sepsis (EOS) Calculator, a novel tool for reducing unnecessary antibiotic treatment.<p> <p>Study design - A systematic review with individual patient data meta-analysis was conducted, extending PROSPERO record CRD42018116188. Cochrane, PubMed/MEDLINE, EMBASE, Web of Science, Google Scholar, and ...
    • A Survey on Cannabinoid Treatment of Pediatric Epilepsy Among Neuropediatricians in Scandinavia and Germany 

      Klingenberg, Claus; Mouslet, George; Hjalgrim, Helle; Gerstner, Thorsten (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-24)
      <i>Objectives</i>: There is an increasing interest in cannabinoid-based products for the treatment of refractory pediatric epilepsy. However, a licensed cannabidiol (CBD) product was first approved for use by the European regulatory authorities in 2019. We aimed to obtain knowledge about clinical experience and attitudes toward cannabinoid use for epilepsy treatment among neuropediatricians in ...
    • The synthetic antimicrobial peptide LTX21 induces inflammatory responses in a human whole blood model and a murine peritoneum model 

      Granslo, Hildegunn Norbakken; Aarag, Elizabeth; Esaiassen, Eirin; Christophersen, Lars; Jensen, Peter Østrup; Mollnes, Tom Eirik; Moser, Claus; Flægstad, Trond; Klingenberg, Claus; Cavanagh, Jorunn Pauline (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-03-27)
      The global spread of antimicrobial resistance and the increasing number of immune‐compromised patients are major challenges in modern medicine. Targeting bacterial virulence or the human host immune system to increase host defence are important strategies in the search for novel antimicrobial drugs. We investigated the inflammatory response of the synthetic short antimicrobial peptide LTX21 in two ...
    • Use of probiotics to reduce infections and death and prevent colonization with extended-spectrum beta-lactamase (ESBL)-producing bacteria among newborn infants in Tanzania (ProRIDE Trial): study protocol for a randomized controlled clinical trial 

      Kuwelker, Kanika; Langeland, Nina; Löhr, Iren Høyland; Gidion, Joshua; Manyahi, Joel; Moyo, Sabrina John; Blomberg, Bjørn; Klingenberg, Claus (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-29)
      <i>Background</i> - Extended-spectrum beta-lactamase-producing <i>Enterobacteriaceae</i> (ESBL-E) has emerged as an urgent global health threat and is by the World Health Organization ranked as priority 1 among pathogens in need of new treatment. Studies have shown high mortality in Tanzanian children with ESBL-E infections. Gut colonization of ESBL-E, which is a potential risk factor of ESBL-E ...