Navigation Links
Anti-growth factor drugs raise hope and concern for treatment of children's eye diseases
Date:8/3/2009

Philadelphia, PA, 3 August 2009 A new class of antibody drugs may provide a powerful new tool for the treatment of eye diseases in children, but specialists need to be alert for the possibility of serious side effects, according to an editorial in the August Journal of AAPOS (American Association for Pediatric Ophthalmology and Strabismus), published by Elsevier.

Dr. Robert L. Avery of Santa Barbara, Calif., discusses issues related to the use of antibodies against vascular endothelial growth factor (VEGF) in pediatric ophthalmology. The two anti-VEGF antibodies available so farbevacizumab and ranibizumabhave been rapidly adopted for the treatment of age-related macular degeneration (AMD), the leading cause of vision loss in older adults. The antibodies work by blocking the development of new blood vessels (angiogenesis).

Anti-VEGF antibodies were originally approved for use in cancer treatment, and there have been some safety concerns, including a possible increase in stroke risk. However, at the much smaller doses used in eye diseases, the two antibodies appear to be safe. However, in discussing the growing use of anti-VEGF antibodies in children, Dr. Avery sounds a cautious note. One study, also published in the August Journal of AAPOS, found that bevacizumab treatment in one eye of a child with eye disease also improved the condition in the other eye. This, along with other limited reports, suggests that the antibodies might leave the eye and enter the bloodstream, where they could potentially lead to side effects and complications.

Side effects are a special concern in children, who might be at higher risk because of their smaller size. Used in premature infants with an eye disease called retinopathy of prematurity, anti-VEGF antibodies could have the potential for harm to still developing organs.

These issues are particularly difficult because the anti-VEGF antibodies are not approved for use in children. Because of the urgent need for treatment of serious but relatively rare eye diseases in children, "off-label" use of drugsfor purposes other than those which the drugs are approvedis common in pediatric ophthalmology.

A study is being performed to compare the two anti-VEGF antibodies in adults with AMD. Because ranibizumab stays in the body for a shorter time than bevacizumab, it might be a better choice for use in treating eye diseases. However, the upcoming study may not be large enough to detect small differences in side effects, and in any case the results may not be applicable to children.

Meanwhile, Dr. Avery urges pediatric ophthalmologists using anti-VEGF antibodies to watch carefully for any possible side effects in their young patients. "Bevacizumab and ranibizumab have provided us with a great opportunity to improve the treatment of a variety of retinal diseases," he concludes. "Hopefully, the dramatic improvements in outcomes we have seen in adults will extend into pediatric diseases, but further study is clearly needed to assess the safety and efficacy of these drugs in this population."


'/>"/>

Contact: Jayne Dawkins
ja.dawkins@elsevier.com
215-239-3674
Elsevier
Source:Eurekalert

Related medicine news :

1. Conventional prognostic factors fail to explain better prostate cancer survival in most Asian men
2. Study, meta-analysis examine factors associated with death from heatstroke
3. New Alzheimers findings: High stress and genetic risk factor lead to increased memory decline
4. Discovery suggests location of genes for breast density, a strong risk factor for breast cancer
5. PA Health Department Survey Shows Impact of Income, Gender, Other Factors on Health and Access to Health Care
6. Researchers genetically engineer micro-organisms into tiny factories
7. Study Downgrades Gene as Heart Risk Factor
8. Severe heart defect likely caused by genetic factors
9. A Chinese medicine compound has satisfactory anti-cancer effects on hepatocellular carcinoma
10. Aggressively Treating Cardiac Risk Factors May Reverse Ischemia
11. New peptide communication factor enabling bacteria to talk to each other discovered
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/2/2016)... ... ... years, Doctors on Liens has published a directory of the top doctors working ... When the company started in 1997, the directory was a single page focusing on chiropractors ... directory features a vast array of medical specialists stretching from Sacramento to San ...
(Date:12/2/2016)... ... December 02, 2016 , ... Center for Autism and ... of those affected by autism spectrum disorder (ASD) and other developmental disabilities. The group, ... will give parents and other caregivers the opportunity to share stories and advice, seek ...
(Date:12/2/2016)... ... December 02, 2016 , ... Mediaplanet’s newest campaign, ... standing as living proof that attitude and determination can combine into the most ... spike around the holidays. This campaign will offer patients a new-found hope, by ...
(Date:12/2/2016)... ... December 02, 2016 , ... ... version of its SaaS LIMS, CloudLIMS Lite. CloudLIMS Lite helps biobanks, clinical, research ... labeling, storing, shipping and disposal. The new version is a faster and a ...
(Date:12/2/2016)... Wexford, PA (PRWEB) , ... December 02, 2016 , ... ... manages stress and overall health, day and night. No other wearable health technology on ... management. We wanted to give poeple more meaningful insights about their health than ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... , Dec. 2, 2016  LifeVac, the revolutionary ... included in the Emergency Response Training and Support Services ... excited to have LifeVac become part of the ERTSS ... Founder and CEO of LifeVac. "Having an established network ... and effectively will help leverage our efforts to spread ...
(Date:12/2/2016)... -- PipelineRx, a leading medication management technology company focused ... its SaaS-based telepharmacy platform, PowerGridRx™ , at ... Clinical Meeting and Exhibition, December 5-7 in ... hospital clients nationally, the Company is a leader ... improve pharmacy operations, enhance patient safety, and reduce ...
(Date:12/2/2016)... 2, 2016  Maxor National Pharmacy Services, LLC ("Maxor"), today ... Inc. ("PSI").  The combination of Texas -based ... -based PSI bring together both company,s clinical expertise and high-touch ... an industry-leading specialty pharmacy. About Maxor ... , , ...
Breaking Medicine Technology: