@article {1368, title = {Synthesis and Characterization of Omega-3 Fatty Acid-Infused Microspheres: An in vitro Exploration of their Cytotoxic, Anti-Inflammatory, and Antioxidant Virtues}, journal = {Pharmacognosy Research}, volume = {17}, year = {2025}, month = {January 2025}, pages = {244-250}, type = {Original Article}, chapter = {244}, abstract = {

Background: Omega-3 fatty acids are vital polyunsaturated fats that are fundamental to maintaining overall health and well-being. Objectives: This research focused on the preparation of omega-3 fatty acid microspheres and evaluated their cytotoxicity, anti-inflammatory and antioxidant properties. Materials and Methods: Omega-3 fatty acid microspheres were developed using the water-in-oil-in-water (w/o/w) double emulsion method. The resulting microspheres were analyzed for their surface characteristics using Scanning Electron Microscopy (SEM). Various concentrations (25, 50, and 100 μg/mL) were subjected for characterization. Cytotoxicity of the synthesized microspheres was assessed using brine shrimp lethality assay. Additionally, their anti-inflammatory and antioxidant properties were assessed through protein denaturation and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays, respectively. Results: Particle size analysis showed that over 90\% of the produced microspheres ranged from 32 to 55 μm. Nauplii lethality was assessed over two days. At 25 μg/mL, no mortality was observed on either day. However, on day 2, mortality was 20\% at both 50 μg/mL and 100 μg/mL concentrations. Additionally, protein denaturation and DPPH assays indicated a significant increase in inhibition percentages as the concentration of omega-3 fatty acid microspheres increased. Conclusion: The omega-3 fatty acid microspheres developed in this study was non-cytotoxic and exhibited outstanding anti-inflammatory and antioxidant activities, making them an ideal candidate for local drug delivery applications.

}, keywords = {Antioxidant, Fatty acid, Free radical, Inflammation}, doi = {10.5530/pres.20252014}, author = {Johnisha Harris John Manohar and Arvina Rajasekar} } @article {698, title = {Comparative Assessment on In vitro Antioxidant Activities of Ethanol Extracts of Averrhoa bilimbi , Gymnema Sylvestre and Capsicum Frutescens}, journal = {Pharmacognosy Research}, volume = {6}, year = {2014}, month = {December,2013}, pages = {36-41}, type = {Original Article}, chapter = {36}, abstract = {

Background: Averrhoa bilimbi, Gymnema sylvestre and Capsicum frutescens are medicinal plants commonly used as traditional medicine for the treatment of various diseases. The present study was designed to investigate the antioxidant activities of Ethanolic extract of A. bilimbi, G. sylvestre and C. frutescens. Materials and Methods: The antioxidant activity of the extracts were evaluated using total phenolic and flavonoid contents, ferric reducing power and the free radical scavenging activity against 1,1-diphenyl-2-picrylhydrazyl (DPPH). Results: Total phenolic and flavonoid contents were higher in G. sylvestre (53.63636 ΁ 0.454545 mg/g gallic acid equivalent) and C. frutescens (26.66667 ΁ 2.081666 mg/g quercetin equivalent) respectively. Reducing power of the crude ethanol extracts increased with the concentrations of the extracts and all the extracts showed moderate free radical scavenging activity against DPPH. The plant extract displayed moderate phenolic and flavonoid contents compared to gallic acid and quercetin equivalent respectively, whereas also exhibited significant scavenging of DPPH radical and reducing power compared with ascorbic acid as standard. Conclusion: Our study suggests that G. sylvestre has significant antioxidant activity. The antioxidant compound of this plant might be a therapeutic candidate against oxidative stress related diseases. Different sub-fraction of A. bilimbi and C. frutescens should be studied further to assess the effect. Further study is necessary for isolation and characterization of the active antioxidant agents for better treatment.

}, keywords = {Antioxidant, Ethanolic extract, Free radical, G. sylvestre, Oxidative stress}, doi = {10.4103/0974-8490.122915}, author = {Md. Mominur Rahman and Md. Razibul Habib and Md. Anayet Hasan and Mohammad Al Amin and Ayan Saha and Adnan Mannan} } @article {910, title = {Antibacterial, anti-infl ammatory, and antioxidant effects of the leaves and stem bark of Glyphaea brevis (Spreng) Monachino (Tiliaceae): A comparative study}, journal = {Pharmacognosy Research}, volume = {3}, year = {2011}, month = {September 2011}, pages = {166-172}, type = {Original Article}, chapter = {166}, abstract = {

Background: Glyphaea brevis (Spreng) Monachino (Tiliaceae) have traditional uses in the management of conditions characterized by infections, inflammatory disorders and oxidative stress. The paper aims to report the comparative data on the leaves and stem bark of Glyphaea brevis with respect to their antibacterial, anti-inflammatory and antioxidant effects. Materials and Methods: The antibacterial effects of the 70\% ethanol extracts of the leaves and stem bark were determined using the agar well diffusion and micro dilution assays. The anti-inflammatory activity was assessed using the carrageenan-induced oedema model in 7-day old cockerels. Using the DPPH free radical scavenging, total antioxidant and total phenol content assays, the antioxidant potential of the extract was assessed. Results: The bark extract had the higher antibacterial effect against 6 of the 8 microorganisms used. Noteworthy are its activity against Bacillus subtilis and Enterococcus faecalis with lowest MIC value of 500 ΅g/mL respectively. In doses of 30, 100 and 300 mg/kg, both extracts reduced the carrageenan-induced oedema in 7-day old cockerels. Based on the ED50 values, both extracts demonstrated similar potencies (ED50 =21.00 mg/kg). The stem bark extract exhibited higher free radical scavenging activity (IC50 = 1.392 mg/mL) compared to the leaf extract (IC50 = 9.509 mg/mL). In the total phenol content, the bark extract showed higher content (15.91 mg/g of dry mass) compared to the leaf extract (2.68 mg/g dry mass). Both extracts demonstrated equal potencies in the total antioxidant capacity determinations (0.60 mg/g dry weight of extract). Conclusions: The results of this work provide scientific evidence for the traditional uses of Glyphaea brevis.

}, keywords = {Antimicrobial, Antioxidant, Carrageenan-induced oedema, Free radical, Glyphaea brevis}, doi = {10.4103/0974-8490.85001}, author = {RA Dickson and E Ekuadzi and K Annan and G Komlaga} }