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Sökning: WFRF:(Löfqvist J) > Thrombocytopenia is...

Thrombocytopenia is associated with severe retinopathy of prematurity

Cakir, B. (författare)
Department of Ophthalmology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA; Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Germany
Liegl, R. (författare)
Department of Ophthalmology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA; Department of Ophthalmology, Ludwig-Maximilians-University, Munich, Germany
Hellgren, Gunnel, 1961 (författare)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för klinisk neurovetenskap,Institute of Neuroscience and Physiology, Department of Clinical Neuroscience,Section for Ophthalmology, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Lundgren, Pia, 1967 (författare)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för klinisk neurovetenskap,Institute of Neuroscience and Physiology, Department of Clinical Neuroscience,Section for Ophthalmology, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
Sun, Y. (författare)
Department of Ophthalmology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
Klevebro, S. (författare)
Karolinska Institutet
Löfqvist, Chatarina, 1964 (författare)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för klinisk neurovetenskap,Institute of Neuroscience and Physiology, Department of Clinical Neuroscience,Section for Ophthalmology, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
Mannheimer, Clara (författare)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för klinisk neurovetenskap,Institute of Neuroscience and Physiology, Department of Clinical Neuroscience,Section for Ophthalmology, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
Cho, S. (författare)
Department of Ophthalmology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA,Department of Pediatrics, Division of Newborn Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
Poblete, A. (författare)
Department of Ophthalmology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
Duran, R. (författare)
Department of Ophthalmology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
Hallberg, B. (författare)
Karolinska Institutet
Canas, J. (författare)
Department of Pediatrics, Division of Newborn Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
Lorenz, V. (författare)
Department of Pediatrics, Division of Newborn Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
Liu, Z. J. (författare)
Department of Pediatrics, Division of Newborn Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
Sola-Visner, M. C. (författare)
Smith, L. E. H. (författare)
Department of Ophthalmology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
Hellström, Ann, 1959 (författare)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för klinisk neurovetenskap,Institute of Neuroscience and Physiology, Department of Clinical Neuroscience,Section for Ophthalmology, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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 (creator_code:org_t)
2018-10-04
2018
Engelska.
Ingår i: Jci Insight. - : American Society for Clinical Investigation. - 2379-3708. ; 3:19
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Retinopathy of prematurity (ROP) is characterized by abnormal retinal neovascularization in response to vessel loss. Platelets regulate angiogenesis and may influence ROP progression. In preterm infants, we assessed ROP and correlated with longitudinal postnatal platelet counts (n = 202). Any episode of thrombocytopenia (< 100 x 10(9)/l) at >= 30 weeks postmenstrual age (at onset of ROP) was independently associated with severe ROP, requiring treatment. Infants with severe ROP also had a lower weekly median platelet count compared with infants with less severe ROP. In a mouse oxygen-induced retinopathy model of ROP, platelet counts were lower at P17 (peak neovascularization) versus controls. Platelet transfusions at P15 and P16 suppressed neovascularization, and platelet depletion increased neovascularization. Platelet transfusion decreased retinal of vascular endothelial growth factor A (VEGFA) mRNA and protein expression; platelet depletion increased retinal VEGFA mRNA and protein expression. Resting platelets with intact granules reduced neovascularization, while thrombin-activated degranulated platelets did not. These data suggest that platelet releasate has a local antiangiogenic effect on endothelial cells to exert a downstream suppression of VEGFA in neural retina. Low platelet counts during the neovascularization phase in ROP is significantly associated with the development of severe ROP in preterm infants. In a murine model of retinopathy, platelet transfusion during the period of neovascularization suppressed retinopathy.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Oftalmologi (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Ophthalmology (hsv//eng)

Nyckelord

platelet alpha-granules
oxygen-induced retinopathy
pathological
angiogenesis
endothelial-cells
p-selectin
expression
proteins
release
mouse
transfusions
Angiogenesis

Publikations- och innehållstyp

ref (ämneskategori)
art (ämneskategori)

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