RESUMEN
The current study aimed to assess the cytotoxic potential of doxorubicin (DOX) loaded nanoparticles (NPs) for effective colon cancer targeting. Poly-caprolactone (PCL) was used to make the NPs, and PCL was then conjugated with hyaluronic acid (HA) and polyethylene glycol (PEG) (HA-PEG-PCL NPs). The developed NPs were used to encapsulate the DOX, which was then tested for stability, in-vitro drug release, cell viability, and entrapment effectiveness. The NPs were manufactured with care, and TEM examinations showed that they were spherical. Zeta potential measurements for HA-PEG-PCL and PCL NPs were 16.4±0.84 mV, -4.9±0.3, and PDI 0.648 and 0.553, respectively, for both formulations. HA-PEG-PCL NPs and PCL NPs were found to have particle sizes of 267±0.5 nm and 142±1.5 nm, respectively. The NPs made using HA-PEG-PCL copolymers demonstrated their ability to continue the release of DOX. While DOX-HA-PEG-PCL NPs released 93.1±2.4% of DOX in 96 hrs, DOX-PCL NPs released nearly 100% of the medication in the same time frame. When the stability was assessed in terms of particle size and %EE, it was discovered that the NPs formulations were more stable at 4±2°C and then 28±2°C. Because HA binds to the overexpressed CD44 receptors on HT-29 cells, the DOX-HA-PEG-PCL NPs demonstrated noticeably more cytotoxicity as a result of better formulation internalization. The controlled drug release behaviour of the proposed nanotechnology showed their potential for colon cancer cell lines.
RESUMEN
The free radical scavenging potential of roots of Thespesia lampas Dalz and Gibs was studied by different antioxidant models. Free radicals are implicated for more than 80 diseases including Diabetes mellitus, arthritis, cancer, ageing etc. In the treatment of theses diseases, antioxidant therapy has gained an utmost importance. Current research is directed towards finding naturally occurring antioxidant of plant origin. In Indian system of medicine, Thespesia lampas is an important medicinal plant and its root juice has been used in various ailments and as health tonic. To understand the mechanisms of pharmacological actions, the in vitro antioxidant activity of aqueous extract of Thespesia lampas was investigated for the activity of scavenging superoxide anion radicals, nitric oxide radical and lipid peroxidation assay. In all the testing, a significant correlation existed between concentrations of the extract and percentage inhibition of free radicals, metal chelating, reducing power or inhibition of lipid peroxidation. These results clearly indicate that Thespesia lampas is effective against free radical mediated diseases