No abstract

Flavonoids are the most common group of phenolic compounds that have anti-carcinogenic properties and are the constituents of fruits, vegetables and plant derived beverages. In the present study, Flavonoids were docked to three-dimensional structure of P-glycoprotein which plays an important role in multi drug resistance. A three-dimensional homology model of human P-glycoprotein was built, based on the crystal structure of the 3G5U (Chain A; Structure of a bacterial multidrug ABC transporter) by using Modeller7v7 software. Homology modelling provided a good quality model of the corresponding region in human P-glycoprotein. With the aid of the molecular mechanics and molecular dynamics methods, the final model is obtained and is further assessed by PROCHECK and verify 3D graph programs, which showed that the final refined model is reliable. With this model, a flexible docking study of P-glycoprotein with a group of Flavonoids which were selected from the previous publications was performed. The results indicated THR37, ALA42, ARG40 and ARG47 in P-glycoprotein are important determinant residues in binding as they have strong hydrogen bonding with Flavonoids. These hydrogen binding interactions play an important role for stability of the complex. Among the 10 Flavonoids docked, BiochaninA showed best docking result with P-glycoprotein. Our results may be helpful for further experimental investigations.

The present study makes this animal model a substantial one for further molecular level studies and opens up new targets for potential therapeutic strategies.

The plants fractions of Caralluma adscendens var. gracilis and Caralluma pauciflora were evaluated for their total phenolic content in relation to their antioxidant activity and inhibitory effect of starch and lipids digestive enzymes. Among all fractions of C. adscendens var. gracilis and C. pauciflora, diethyl ether fractions showed highest phenolic content (36.23 ± 1.51 mg of GAE g− 1 DW, 28.21 ± 3.61 mg of GAE g− 1 DW), DPPH radical scavenging activity (27.96 ± 3.45 µg ml− 1 and 37.23 ± 0.92 µg ml− 1), inhibition of α-glucosidase (59.13 ± 1.31 µg ml− 1 and 73.03 ± 2.04 µg ml− 1), α-amylase (78.1 ± 3.47 µg ml− 1 110.5 ± 4.1µg ml− 1) and pancreatic lipase (41.91 ± 3.51 µg ml− 1 and 49.12 ± 3.89 µg ml− 1) compared to butanone and n-butanol fractions which showed little or no significant activities compared to standards. To the best of our knowledge, the present study provides the first evidence that these two plants (C. adscendens var. gracilis and C. pauciflora) are potent inhibitors of key enzymes in type 2 diabetes and obesity studies in vitro.

Ethnopharmological relevanceAnantapuram district is known for rich plant source and their traditional practices from long time by certain tribes for different diseases. Despite of increase in acceptance of traditional medicines in India, this rich indigenous knowledge about medicinal plants of Anantapuram district is not adequately documented previously.MethodsExtensive was done for past three years and a total of 66 plants from 66 species and 64 genera of 42 families were recorded. Interviews, Observations and guided talks with 415 participants were conducted to obtain ethno botanical data on medicinal plants grown and maintained in Anantapuram District of Andhra Pradesh, India. The names of plant species, their local name, mode of administration and parts used for different diseases are gathered with FIC and FL values.ResultsPlants widely used to cure the common symptoms of Intestinal disorders has highest agreement of FIC, followed by Toothache, Fever, Snake bite, Eye drops, Dermatological, Headache (0.88%), Hair shampoo (0.87%), Cut and Wounds (0.85%), Boils and Burns (0.84%), Bronchitis/cough (0.83%), Earache (0.82%), Pain (0.82%), Antihelmintic (0.81%), Diabetes (0.81%) and Stress (0.63%).ConclusionThis ethano botanical survey noticed that in Anantapuram very few medicinal plants were reported with their traditional use, can be an important economic source to develop this region and also planned exploitation is needed to make tribal people to continue folk medicine.