Persistent Fetal Vasculature (PFV)
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Persistent Fetal Vasculature (PFV)

The inexorable fetal vasculature (PFV) is complex in its presentation, rendering its diagnosis and therapeutics quite difficult. As a research service provider, Protheragen offers customized diagnostics and therapeutics development services.

Overview of Persistent Fetal Vasculature (PFV)

Persistent Fetal Vasculature (PFV) is a hereditary ocular abnormality whose pathogenesis is associated with the abnormal development of the fetal eye. An embryo is healthy when features like the hyaloid vascular system that supplies the developing lens and retina in the early stages are fully formed. This vascular system, however, is designed to recede, only to leave behind a prominently used pliable structure called the Cloquet canal. In PFV cases, the entirety or parts of the hyaloid vasculature system remain, which leads to overdevelopment of the optic nerve head leading to other ocular parts, like the lens and ciliary process, resulting in abnormally formed posterior structures.

Pathological analysis of persistent fetal vasculature.Fig.1 Pathological study of persistent fetal vasculature. (Pauzuolyte V., et al., 2023)

There can be a multitude of structural and functional deficiencies in the vision. For instance, persistent fetal vasculature syndrome complications may include ocular and systemic associated congenital anomalies of the lens. Retinal detachment is also a common complication, as the traction exerted by the persistent vessels can pull on the retina. Other conditions like angle-closure glaucoma may occur because of anterior segment dysgenesis which leads to abnormal propulsion of fetal tissue, and obstruction of the aqueous outflow pathways.

Diagnostics Development for Persistent Fetal Vasculature

Genetic Testing

Testing for PFV usually includes finding the relevant mutations associated with the disorder using genetic examination. PFV is connected to many different genes. Some examples the literature provide, an autosomal recessive inheritance was noted for some cases having mutations at ATOH7 gene at 10q21.3. An Egyptian family with a PFV had a different dominant pattern of inheritance which was noted earlier. Also, in bilateral PFV cases, some mutations were found NDP and COX15 genes located on chromosome 10.

Biomarker Identification

One other part of molecular diagnostics is detecting potential biomarkers. Biomarkers include molecules like proteins and nucleic acids that may take part in the onset and progression of PFV. For example, some studies tried to determine the role of vascular endothelial growth factor (VEGF) and placental growth factor in hyaloid vasculature regression and their abnormal levels as potential biomarkers for PFV.

Therapeutics Development for Persistent Fetal Vasculature

  • Anti-VEGF Therapies
    The application of anti-VEGF drugs in the therapeutics of a variety of retinal disorders is encouraging, and now they are being investigated for use in PFV. VEGF is known to support endothelial cell proliferation needed for the formation of new blood vessels, or angiogenesis. In PFV, the persistent vasculature may result from abnormal signaling of VEGF. Anti-VEGF drugs however function by reversing the actions of VEGF, which is believed to stanch the expansion and development of the abnormal vessels.
  • Gene Therapy
    Gene therapy has the possibility to ameliorate the genetic defects that cause PFV. Because certain mutations are causative for the development of PFV, gene therapy intends to correct the mutated genes or add functional copies of these genes. For instance, in the cases where ATOH7 gene mutations are identified, gene therapy can be carried out by administering normal ATOH7 genes to the affected cells within the eye.

Our Services

At Protheragen, we offer a comprehensive range of services for Persistent Fetal Vasculature diagnostics and therapeutics development. Our state-of-the-art facilities and a team of experienced scientists enable us to conduct in-depth research and development in this field.

Diagnostics Development

  • Karyotype Analysis Service
  • Omics Analysis Service
  • Biomarker Development Service
  • Artificial Intelligence Service
  • Customized Diagnostics Development

Therapeutic Development

  • Small Molecule Drug
  • Cell Therapy
  • Gene Therapy
  • Therapeutic Antibody
  • Therapeutic Peptide
  • Therapeutic Protein
  • Customized Therapy Development

Disease Models

  • Nuc1 Rat Models
  • Cryba1 Knockout Mouse Models
  • Bax/Bak Double Knockout Mouse Models
  • Lrp5 Knockout Mouse Models
  • Fzd5 Knockout Mouse Models

Protheragen's preclinical research services for PFV are designed to provide a solid foundation for the development of effective therapies. We conduct in vitro studies using cell lines and organoids to understand the molecular mechanisms underlying PFV. For example, we use retinal cell lines to study the effects of genetic mutations on cell behavior and the role of signaling pathways in the development of PFV-related phenotypes.

In vivo preclinical studies are also a key part of our services. We use animal models, such as mice and rabbits, to test the safety and efficacy of potential therapeutics. These animal models are carefully selected based on their ability to mimic the human PFV condition. If you are interested in our services, please feel free to contact us.

References

  • Khurana, Surbhi, et al. "A clinicopathological study of persistent fetal vasculature." Indian Journal of Ophthalmology 67.6 (2019): 785-787.
  • Prakhunhungsit, Supalert, and Audina M. Berrocal. "Diagnostic and management strategies in patients with persistent fetal vasculature: current insights." Clinical Ophthalmology (2020): 4325-4335.
  • Chen, Chonglin, Hu Xiao, and Xiaoyan Ding. "Persistent fetal vasculature." Asia-Pacific Journal of Ophthalmology 8.1 (2019): 86-95.