Vascular permeability in chronic rhinosinusitis enhances accumulation and retention of nanoscale pegylated liposomes

Nanomedicine. 2021 Nov:38:102453. doi: 10.1016/j.nano.2021.102453. Epub 2021 Aug 4.

Abstract

Chronic rhinosinusitis (CRS) is a debilitating inflammatory disorder of the sinonasal mucosa that substantially diminishes patient quality of life. Progress surrounding management of this disease has been crippled by a lack of therapeutic innovation. It has been posited that increased vascularity within the diseased sinuses of patients with CRS may allow for improved systemic drug delivery via nanoscale liposomal carriers. Such a system could enhance drug distribution, accumulation, and retention within the sinuses, ultimately leading to improved patient outcomes. PEGylated liposomes loaded with indocyanine green (ICG) were synthesized, characterized and systemically administered in a mouse model of CRS. Accumulation and retention of ICG in sinonasal tissue were evaluated. Compared to healthy controls, CRS mice showed significant sinonasal tissue accumulation and retention of PEGylated liposomal ICG for up to 21 days (P < 0.001). Conversely, free ICG was eliminated from the body after 24 h in both groups.

Keywords: Chronic rhinosinusitis; Inflammation; Liposomes; Nanocarriers; Vascular permeability.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Capillary Permeability
  • Chronic Disease
  • Humans
  • Liposomes*
  • Mice
  • Polyethylene Glycols
  • Quality of Life
  • Sinusitis* / drug therapy

Substances

  • Liposomes
  • Polyethylene Glycols