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  • Romantsik, OlgaLund University,Lunds universitet,Neonatalogi,Forskargrupper vid Lunds universitet,Neonatology,Lund University Research Groups,Skåne University Hospital (författare)

Severe intraventricular hemorrhage causes long-lasting structural damage in a preterm rabbit pup model

  • Artikel/kapitelEngelska2022

Förlag, utgivningsår, omfång ...

  • 2022-05-03
  • Springer Science and Business Media LLC,2022

Nummerbeteckningar

  • LIBRIS-ID:oai:gup.ub.gu.se/316434
  • https://gup.ub.gu.se/publication/316434URI
  • https://doi.org/10.1038/s41390-022-02075-yDOI
  • https://lup.lub.lu.se/record/faefc4fa-5ba3-4926-99fe-d7ddffe8cef7URI

Kompletterande språkuppgifter

  • Språk:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Background Intraventricular hemorrhage causes significant lifelong mortality and morbidity, especially in preterm born infants. Progress in finding an effective therapy is stymied by a lack of preterm animal models with long-term follow-up. This study addresses this unmet need, using an established model of preterm rabbit IVH and analyzing outcomes out to 1 month of age. Methods Rabbit pups were delivered preterm and administered intraperitoneal injection of glycerol at 3 h of life and approximately 58% developed IVH. Neurobehavioral assessment was performed at 1 month of age followed by immunohistochemical labeling of epitopes for neurons, synapses, myelination, and interneurons, analyzed by means of digital quantitation and assessed via two-way ANOVA or Student's t test. Results IVH pups had globally reduced myelin content, an aberrant cortical myelination microstructure, and thinner upper cortical layers (I-III). We also observed a lower number of parvalbumin (PV)-positive interneurons in deeper cortical layers (IV-VI) in IVH animals and reduced numbers of neurons, synapses, and microglia. However, there were no discernable changes in behaviors. Conclusions We have established in this preterm pup model that long-term changes after IVH include significant wide-ranging alterations to cortical organization and microstructure. Further work to improve the sensitivity of neurocognitive testing in this species at this age may be required. Impact This study uses an established animal model of preterm birth, in which the rabbit pups are truly born preterm, with reduced organ maturation and deprivation of maternally supplied trophic factors. This is the first study in preterm rabbits that explores the impacts of severe intraventricular hemorrhage beyond 14 days, out to 1 month of age. Our finding of persisting but subtle global changes including brain white and gray matter will have impact on our understanding of the best path for therapy design and interventions.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Ross-Munro, E.RMIT University (författare)
  • Grönlund, SusanneLund University,Lunds universitet,Antioxidationsmedicin,Forskargrupper vid Lunds universitet,Antioxidation medicine,Lund University Research Groups,Skåne University Hospital(Swepub:lu)med-sug (författare)
  • Holmqvist, B.ImaGene-iT AB (författare)
  • Brinte, A.ImaGene-iT AB (författare)
  • Gerdtsson, E.ImaGene-iT AB (författare)
  • Vallius, SuviLund University,Lunds universitet,Pediatrik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Neonatalogi,Forskargrupper vid Lunds universitet,Paediatrics (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Neonatology,Lund University Research Groups,Skåne University Hospital(Swepub:lu)med-svv (författare)
  • Bruschettini, MatteoLund University,Lunds universitet,Pediatrik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Neonatalogi,Forskargrupper vid Lunds universitet,Paediatrics (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Neonatology,Lund University Research Groups,Skåne University Hospital(Swepub:lu)med-mb14 (författare)
  • Wang, Xiaoyang,1965Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för obstetrik och gynekologi,Institute of Clinical Sciences, Department of Obstetrics and Gynecology,Sahlgrenska Academy,Zhengzhou University(Swepub:lu)xi6668wa (författare)
  • Fleiss, B.RMIT University,Université Paris Cité (författare)
  • Ley, DavidLund University,Lunds universitet,Pediatrik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Neonatalogi,Forskargrupper vid Lunds universitet,LTH profilområde: Avancerade ljuskällor,LTH profilområden,Lunds Tekniska Högskola,Paediatrics (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Neonatology,Lund University Research Groups,LTH Profile Area: Photon Science and Technology,LTH Profile areas,Faculty of Engineering, LTH,Skåne University Hospital(Swepub:lu)pedi-dle (författare)
  • NeonatalogiForskargrupper vid Lunds universitet (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Pediatric Research: Springer Science and Business Media LLC92:2, s. 403-4140031-39981530-0447

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