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Objectives: Atherosclerosis is caused by vascular inflammation and oxidative stress. Pro-atherogenic effect of hypercholesterolemia caused by impairment of nitric oxide generation due to activated arginase. The current study was wanted to explore the atheroprotective effect of polyphenolic fraction of Rivea ornata by using lipid emulsion induced atherosclerosis in rat model. Materials and Methods: The study carried out by studying atherogenic markers in the serum (lipid profiles, C-reactive protein), vascular tissue (myeloperoxidase, arginase, hydroxyproline, lipid peroxidation) and atheroprotective factors in the serum (paraoxonase, nitric oxide,) and in the vascular tissue (thiol levels, endogenous antioxidants) after feeding the rats with lipid emulsion for 12 weeks. Results: Treatment of polyphenolic rich butanol fraction is able to correct the imbalance of atherogenic and antiatherogenic factors induced by lipid emulsion feeding. Butanol fraction at the dose of 400 mg/kg significantly increases HDL, paraoxonase, nitric oxide, tissue thiol levels, endogenous antioxidants and decreases TG, TC, VLDL, LDL myeloperoxidase, arginase, hydroxyproline, lipid peroxidation. And atheroprotection reflected in histopathology studies also. Lipid emulsion associated foam cells formation is inhibited by butanol fraction. Conclusion: This is all due to presence of gallic acid in polyphenol rich butanol fraction is responsible for the underlying mechanism of atheroprotection.

Rivea ornata used traditionally for various disease of heart. However, its protective effect against oxidative stress induced injury is unclear and unproved. So, we attempted to investigate the protective role of butanol fraction of Rivea ornata on H9c2 cardiomyocytes against oxidative stress induced by H2O2. Ethanol extract and its fractions such as n-hexane, ethyl acetate and butanol fractions were assessed for its phytochemical composition, total phenolic and flavonoid content and assessed in vitro antioxidant activity by using established assays such as DPPH, H2O2 neutralization activity, ferric reduction assays and total antioxidant capacity. Among all the extracts/fractions butanol fraction found with high phenolic (82.4 ± 4.61 mg of GAE/g) and flavonoid (105 ± 4.09 mg of QE/g) content as well as possess strong antioxidant abilities evident by comparative lowest IC50 values for DPPH (41.80 µg/mL), H2O2 neutralization assay (35.39 µg/m), highest ferric reduction at 120µg/mL and high antioxidant capacity equivalent to quercetin (72.5±2.98 µg/mL). By considering these results, only butanol fraction assessed for its protective effect H2O2 induced oxidative stress on H9c2 cardiac cell lines was assessed by MTT, LDH assay and ROS expression studies. Butanol fraction at 25µg/mL maintain H9c2 cell lines viability (in MTT assay), cell integrity (decreased LDH release) and decreased ROS expression (decrease in percentage mean fluorescence). These findings are proved antioxidant rich polyphenolic butanol fraction protective effect against oxidative stress injury observed with H2O2 by maintain cell viability, cell integrity and ROS expression.

Objectives: Alzheimer’s disease is a leading neurodegenerative disorders having serious effect on an individual’s occupational potential and quality of life. The natural and nutritional based remedy is continuing interest for neurological disorders; hence an attempt was made to reveal memory enhancing potential of commonly available fruits, by applying the molecular docking studies. Methods: The study was conducted in aluminium chloride induced Alzheimer’s Wistar albino rats for the period of 28 days. The oral administered animal groups with ethanolic extracts of peels of ripped banana and papaya (200 and 400 mg/ kg, p.o) is comparatively evaluated with positive control rats (donepezil, 1mg/kg. p.o) by behavioural studies like pole climbing test and elevated plus maze test, biochemical and histopathological parameters. Further, interaction of selected leads of banana and papaya peel with selected targets were analysed by Schrodinger Glide software. Results: Memory enhancing effects of peels was supported by shortening of transfer latency (elevated plus maze), increased number of escapes (cooks pole climbing), enhancement of brain tissue antioxidant defensive enzymes such as SOD, Catalase, GSH, reduction of activity of acetylcholine esterase and improvement of histopathological changes. Memory enhancement effect further observed by best docking score and glide energy of selected leads with targets of Alzheimer’s disease such as beta secretase and acetylcholine esterase. Conclusion: On the basis of the present study, the results revealed that peel extracts of papaya and banana and used as adjuvant which shows anti-Alzheimer’s disease.

Introduction: Caralluma adscendens var. attenuata (Wight) Grav. and Mayur., a member of Apocynaceae, is a perennial stem succulent plant with wide distribution in tropics and subtropics of the world. This plant is reported for the presence of steroids, flavonoids, saponins, triterpenes, and pregnane glycosides, and is known to have antidiabetic and antiulcerogenic properties. Materials and Methods: In this study, an attempt was made to identify antioxidant capacity and cytotoxic potential of n-hexane and aqueous methanolic extracts of total stem part of C. adscendens var. attenuata. Antioxidant activity was evaluated by total phenolic content assay, total flavonoid content assay, free radical scavenging activity, and reducing ability methods. Cytotoxic activity was evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5 diphenyltetrazolium bromide (MTT) assay and nuclear staining methods for colorectal cancer cell lines HT29 and liver cancer cell lines HepG2. Results: MTT assay method has proven that the IC50 value was 10 μg/mL for both extracts, whereas for cisplatin standard, it was 2 μg/mL. By nuclear staining, the apoptotic cells were identified as oval masses with dark cytoplasm and dense green nuclear chromatin fragments indicating the programmed cell death for both n-hexane and aqueous methanolic extracts at the same concentration (10μg/mL). Conclusion: However, aqueous methanolic extract showed prominent cytotoxic potential against both cancer cell lines.