Dopamine-loaded lipid based nanocarriers for intranasal administration of the neurotransmitter: A comparative study was written by Trapani, Adriana;De Giglio, Elvira;Cometa, Stefania;Bonifacio, Maria Addolorata;Dazzi, Laura;Di Gioia, Sante;Hossain, Niamat Md;Pellitteri, Rosalia;Antimisiaris, Sophia G.;Conese, Massimo. And the article was included in European Journal of Pharmaceutics and Biopharmaceutics in 2021.Name: 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one The following contents are mentioned in the article:
Both dopamine (DA) loaded Solid Lipid Nanoparticles (SLN) and liposomes (Lip), designed for intranasal administration of the neurotransmitter as an innovative Parkinson disease treatment, were already characterized in vitro in some extent by us (Trapani et al., 2018a and Cometa et al., 2020, resp.). Herein, to gain insight into the structure of SLN, XPS Anal. was carried out and DA-SLN (SLN 1) were found to exhibit high amounts of the neurotransmitter on the surface, whereas the external side of Glycol Chitosan (GCS) containing SLN (SLN 2) possessed only few amounts However, SLN 2 were characterized by the highest encapsulation DA efficiency (i.e., 81%). Furthermore, in view of intranasal administration, mucoadhesion tests in vitro were also conducted for SLN and Lip formulations, evidencing high muchoadesive effect exerted by SLN 2. Concerning ex-vivo studies, SLN and Lip were found to be safe for Olfactory Ensheathing Cells and fluorescent SLN 2 were taken up in a dose-dependent manner reaching the 100% of pos. cells, while Lip 2 (chitosan-glutathione-coated) were internalised by 70% OECs with six-times more lipid concentration Hence, SLN 2 formulation containing DA and GCS may constitute interesting formulations for further studies and promising dosage form for non-invasive nose-to-brain neurotransmitter delivery. This study involved multiple reactions and reactants, such as 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one (cas: 38215-36-0Name: 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one).
3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one (cas: 38215-36-0) belongs to thiazole derivatives. Thiazole rings are planar and aromatic. Thiazoles are characterized by larger pi-electron delocalization than the corresponding oxazoles and have therefore greater aromaticity. The pyridine-type nitrogen in the thiazole ring deactivates the ring for electrophilic substitution reactions, which is further reduced in acid due to protonation of the thiazole ring.Name: 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one
Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica