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Although the incidence of subependymal haemorrhage/intraventricular haemorrhage (IVH)/intraparenchymal haemorrhage has decreased in recent years, it remains a good predictor of neurodevelopmental handicaps in very-preterm infants.1 Intraventricular blood leakage can result in hydrocephalus due to limited cerebrospinal fluid resorption, a consequence of fibrosis in the arachnoid granulation, subependymal basal lamina and perivascular spaces. The reference treatment approved for hydrocephalus is the ventriculoperitoneal shunt. A randomised trial of an alternative treatment procedure combining drainage and intraventricular fibrinolysis with recombinant tissue plasminogen activator (rt-PA) has been stopped because of haemorrhagic complications.
t-PA binds to low-density lipoprotein (LDL)-related receptor protein-1 (LRP1) promoting the induction of matrix metalloproteinase (MMP) 9. In addition, t-PA cleavage of plasminogen initiates proteolytic MMP cascade, resulting in degradation of …
Contributors PL and SM are responsible for reported research; PL and SM have participated in the concept and design, analysis and interpretation of data, drafting or revising of the manuscript, and have approved the manuscript as submitted.
Funding Rouen University Hospital Charles Nicolle, INSERM, Rouen University and FEDER.
Competing interests None.
Patient consent Obtained.
Ethics approval Advice number CCPPRB: DGS 2006/0378 (7.08.2006).
Provenance and peer review Not commissioned; internally peer reviewed.