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10.1002/adma.202008304

http://scihub22266oqcxt.onion/10.1002/adma.202008304
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34060150!8212080!34060150
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suck abstract from ncbi


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pmid34060150      Adv+Mater 2021 ; 33 (26): e2008304
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  • Formulation of a Composite Nasal Spray Enabling Enhanced Surface Coverage and Prophylaxis of SARS-COV-2 #MMPMID34060150
  • Moakes RJA; Davies SP; Stamataki Z; Grover LM
  • Adv Mater 2021[Jul]; 33 (26): e2008304 PMID34060150show ga
  • Airborne pathogens pose high risks in terms of both contraction and transmission within the respiratory pathways, particularly the nasal region. However, there is little in the way of adequate intervention that can protect an individual or prevent further spread. This study reports on a nasal formulation with the capacity to combat such challenges, focusing on severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Formulation of a polysaccharide-based spray, known for its mucoadhesive properties, is undertaken and it is characterized for its mechanical, spray distribution, and antiviral properties. The ability to engineer key mechanical characteristics such as dynamic yield stresses and high coverage is shown, through systematic understanding of the composite mixture containing both gellan and lambda-carrageenan. Furthermore, the spray systems demonstrate highly potent capacities to prevent SARS-CoV-2 infection in Vero cells, resulting in complete inhibition when either treating, the cells, or the virus, prior to challenging for infection. From this data, a mechanism for both prophylaxis and prevention is proposed; where entrapment within a polymeric coating sterically blocks virus uptake into the cells, inactivating the virus, and allowing clearance within the viscous medium. As such, a fully preventative spray is formulated, targeted at protecting the lining of the upper respiratory pathways against SARS-CoV-2.
  • |*Drug Compounding[MESH]
  • |*Nasal Sprays[MESH]
  • |Animals[MESH]
  • |COVID-19/pathology/virology[MESH]
  • |Carrageenan/chemistry[MESH]
  • |Chlorocebus aethiops[MESH]
  • |Humans[MESH]
  • |Polymers/*chemistry/pharmacology[MESH]
  • |Polysaccharides, Bacterial/chemistry[MESH]
  • |SARS-CoV-2/isolation & purification/*physiology[MESH]
  • |Vero Cells[MESH]


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