Reaction tubes were incubated at 37 °C for 10 min and the reaction was stopped by adding 3 ml of a 0.1 M sodium pyrophosphate/10% trichloroacetic acid (TCA) cold solution. Radioactive polymerized filtrate collected on cellulose nitrate

transfer membranes (0.45 μm, Whatman) was dried and immersed in scintillating fluid. Radioactivity was measured in a scintillating counter and was expressed as counts per minute (CPM). Percentage inhibition was calculated as 100 − [(CPM with extract/CPM without extract) × 100]. Reactions were carried out in duplicate for each of two independent determinations. Azidothymidine (AZT) was used as a positive control.12 Binding of gp120 http://www.selleckchem.com/products/Fulvestrant.html to CD4 was analysed using a commercially available gp120 Capture ELISA kit (GenxBio Health Science, India). To determine whether extracts could interfere with the binding of CD4 to gp120 by interaction with soluble gp120, each extract (Final conc. 10 mg/ml) was mixed with 25 ng of purified gp120 in a total volume of 100 μl and incubated

at room temperature for 1 h. This mixture was then added to microtiter plate wells coated with CD4 ligand and incubated at room temperature for 1 h. The solutions were aspirated and the wells were washed 3 times with washing buffer. The extent of gp120 binding was assessed by using detector reagent provided in the kit according to learn more the manufacturer’s instructions. Negative control was set-up in parallel and heparin was included as a positive control.13 The present study, in-vitro antimicrobial activity of C. coromandelicum extract against 5 Gram-positive and Gram negative bacterial strains and 6 fungal strains

showed a broad spectrum of antimicrobial activity Table 1. The antimicrobial activities of plant extract are compared with standard antibiotics such as Ciprofloxacin and Amphotericin-B which were used as positive controls. The plant extract showed the zone of inhibition on Gram negative bacterial strains Escherichiae coli (19 mm), Klebsiella pneumoniae (14 mm), Salmonella typhi (22 mm), Shigella boydi (16 mm), Shigella Carnitine palmitoyltransferase II flexneri (17 mm). The Gram positive strains Bacillus subtilis (14 mm), Micrococcus flavum (13 mm), Micrococcus leuteum (14 mm), Staphylococcus aureus (10 mm), Staphylococcus epidermis (10 mm) showed significant sensitivity. Among the both bacterial strain plant extract showed the very good sensitivity on Gram negative bacterial strain (S. typhi 22 mm) Fig. 1. The plant shows antifungal activity against Aspergillus niger (16 mm), Auricularia polytricha (17 mm), Arthrobotrys oligospora (13 mm), Candida albicans (18 mm), Chaetomella raphigera (15 mm), Monilinia fruticola (10 mm) Fig. 1. The agar well diffusion assay is a qualitative, non-standardized method useful only for the screening of large numbers of samples.