Oral Propranolol Improve Retinopathy of Prematurity Outcomes in Very Preterm Infants
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|ClinicalTrials.gov Identifier: NCT02977000|
Recruitment Status : Unknown
Verified November 2016 by Huiqing Sun, Zhengzhou Children's Hospital, China.
Recruitment status was: Recruiting
First Posted : November 30, 2016
Last Update Posted : December 1, 2016
Retinopathy of prematurity (ROP) is a major cause of blindness and visual impairment in children in both developing and developed countries around the world. ROP is a multifactorial disease characterized by perturbation of normal vascular development in the retina. The pathogenesis of ROP is hypothesized to consist of two distinct phases of which the second phase is characterized by hypoxia-induced up-regulation of vascular endothelial growth factor (VEGF) and retinal neovascularization.
Recent studies have shown a relationship between the β-adrenergic system and angiogenesis. This relationship has been observed in several diseases, like infantile hemangiomas, ROP, and neoplasias. Studies in animal models have shown that norepinephrine stimulates VEGF expression and secretion in retinal cells. In oxygen induced retinopathy, blockage of β-adrenergic receptors (β-AR) can inhibit the angiogenic cascade and interfere with further proliferation of retinal vasculature. Also, angiogenesis seems to be impaired in β-Argene deficient mice, when exposed to hypoxia and other stimuli, but this function is restored after gene therapy.
Assuming in human preterm newborns with ROP that VEGF overexpression and retinal neovascularization in response to hypoxia might involve b-AR activation, we design prospective randomized study to assess the effect of oral propranolol on the progression of early stages of ROP in very low birth weight infants.
|Condition or disease||Intervention/treatment||Phase|
|Retinopathy of Prematurity||Drug: Propranolol||Not Applicable|
Show Detailed Description
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||100 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||Department of Neonatology, Children's Hospital of Zhengzhou|
|Study Start Date :||May 2016|
|Estimated Primary Completion Date :||March 2018|
|Estimated Study Completion Date :||May 2018|
Propranolol was administered orally as a dose of 1.5 mg/kg.d divided q8h. investigators used powdered drug, dissolved in 5% dextrose. The treatment was continued until complete development of retinal vascularization, although administration was not permitted for more than 90 days.
Propranolol was administered orally as a dose of 1.5 mg/kg.d divided q8h.investigators used powdered drug, dissolved in 5% dextrose. The treatment was continued until complete development of retinal vascularization, although administration was not permitted for more than 90 days.
- The rates of regression of Retinopathy of Prematurity [ Time Frame: 2 years ]
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02977000
|Contact: Hunqing Sun, PhDfirstname.lastname@example.org|
|Zhengzhou, Henan, China, 450000|
|Contact: Huiqing Sun, PhD 13838112692 email@example.com|
|Study Chair:||Ligong Hou, MD||Chidren's Hospital of Zhengzhou|