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VLBW infants are at risk of developing retinopathy of prematurity (ROP). In the first phase of ROP there is a down-regulation of retinal VEGF-expression because of postnatal relative hyperoxia, followed by an upregulation of VEGF mediated through retinal hypoxia, which leads to pathologic vessel formation. VEGF acts through binding to the specific receptor FLT-1, the soluble form sFLT-1 is a specific antagonist of VEGF action. Erythropoietin, given to VLBW infants to prevent anemia, may stimulate VEGF-production in neuronal cells. Currently, there are no data published about VEGF urine-levels in VLBW infants and it is not known, if urine VEGF-levels may serve as a non-invasive marker of ROP-risk. Further shall be investigated, if erythropoietin-therapy increases urine VEGF-levels and if there is a correlation with ROP-development.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 1 | VLBW infants with erythropoietin therapy | ||
| 2 | VLBW infants without erythropoietin therapy. |
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| Measure | Description | Time Frame |
|---|---|---|
| Development of ROP | 4 months |
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Inclusion Criteria:
Exclusion Criteria:
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Pretarem infants of less than 32 weeks of gestation or birth weight below 1500g.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Anke Reinhold, Doctor | Contact | +49/177/2950661 | anke.reinhold@charite.de | |
| Anja Pohl-Schickinger, Doctor | Contact | +49/30/450566122 | anja.pohl@charite.de |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Charité Virchow-Hospital | Recruiting | Berlin | State of Berlin | 13353 | Germany |
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| ID | Term |
|---|---|
| D012178 | Retinopathy of Prematurity |
| ID | Term |
|---|---|
| D012164 | Retinal Diseases |
| D005128 | Eye Diseases |
| D007235 | Infant, Premature, Diseases |
| D007232 | Infant, Newborn, Diseases |
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Urine samples that are centrifugated to get rid of any cells where stored at -80°C until ELISA is done.
| D009358 |
| Congenital, Hereditary, and Neonatal Diseases and Abnormalities |