Indian Journal of Pharmaceutical and Biological Research (IJPBR)
Not a member yet
365 research outputs found
Sort by
Flavonoid Contents From Some Exotic Tree Species Growing In Rajasthan Desert
Get PDFEvaluation of flavonoid contents from four selected exotic tree species like Colophospermum mopane, Holoptelea integrifolia, Kigelia pinnata and Putranjiva roxburghii growing in Rajasthan Desert was carried out. The leaves of selected trees were analysed for flavonoid contents i.e. Quercetin and Kaempferol. Flavonoid contents like Quercetin and Kaempferol were isolated and identified. The maximum total flavonoid contents (17.10mg./gdw) was found in leaves of Putranjiva roxburghii while minimum (9.20mg./gdw) in leaves of Holoptelea integrifolia
Method Development and Validation for Simultaneous Estimation of Ketorolac and Sparfloxacin by RP-HPLC
Get PDFA modified simple, selective, rapid, precise reversed phase high performance liquid chromatography method has been developed and validated for the simultaneous estimation of ketorolac and sparfloxacin. The separation was made in a Hypersil-Keystone C-18 column using a methanol: water (60:40, v/v) (pH 3.1) as mobile phase at 308 nm. The mobile-phase flow rate and the sample volume injected were 0.9 ml/min and 20 μl, respectively. Retention time of sparfloxacin and ketorolac was found to be 3.181 and 4.473 minutes respectively. The correlation coefficient of both drugs was found to be 0.999. The accuracy of ketorolac was found to be 99.82% - 100.55% whereas for sparfloxacin, it was 99.76% - 99.89%. Over all % RSD was found to be less than 2%. The method was validated according to ICH guidelines with respect to linearity, accuracy, precision, robustness, specificity, etc. The developed method can be used for routine analysis of ketorolac and sparfloxacin in their pharmaceutical dosage forms
Antidiabetic Effect of Pleurotus ostreatus (Jacq.ex Fr) kumm. Mushroom on Alloxan-induced Diabetic Rats.
Get PDFAntidiabetic effects of ethanolic extract of Pleurotus ostreatus (mushroom) on alloxan-induced diabetic rats was studied. The median lethal dose (LD50) of the extract was determined to be 3,472.14 mgkg-1 and a single dose of 380.0, 760.0 and 1140.0 body weight of the extract were intraperitoneally administered as the treatment dose and the blood glucose levels (BGL) examined for 7 hours and 15 hours (prolonged) at 2 and 4 hours intervals respectively. The extract exhibited significant (p 0.05 and p 0.01) reduction in the blood glucose levels of the albino rats. The extract compared favourably with the standard reference drug (metformin) which all gave their maximum BGL reduction at 5 hours duration. The confirmation of antidiabetic potentials of the Pleurotus ostreatus tuber has been justified in this study as claimed by traditional medicine practitionersin Akwa Ibom State
Phytochemical, Antioxidant and in vitro Antibacterial Activity of Aqueous and Ethanolic Fruit Extracts of Kigelia Africana
No full textPhytochemicals presents in plants probably explain the various uses of plants for traditional medicine. In this study Kigelia Africana fruit was selected for assessing the level of various Phytochemicals, enzymatic and non- enzymatic antioxidants and antimicrobial activity. Fruits of the plant taken, dried, grind to powder and then aqueous and ethanolic extracts were prepared. Antimicrobial activity of these extracts was then studied using agar well plate method. Results of the study showed that aqueous extract of Kigelia Africana have significant amount of phytochemicals and antioxidant enzymes so useful to prevent chronic diseases related to oxidative stress in human body. Antimicrobial activity of aqueous extract was more than the ethanolic extract
Synthesis and microbial screening of 6-pyridin-4-yl-2, 3-dihydro-1Hpyridazin-4-one derivatives
Get PDF6-pyridin-4-yl-2, 3-dihydro-1H-pyridazin-4-one derivatives were synthesized by a simple method. The isonicotinic acid hydrazide was made to react with acetaldehyde and acetone. This results into the formation of the respective hydrazones. These hydrazones formed were cyclized to the pyridazine derivatives. All synthesized compounds were subjected to antimicrobial activity
Formulation and Evaluation of sustained release matrix tablets of Glipizide
Get PDFThe aim of present investigation was to enhance the solubility of glipizide (BCS Class II). Glipizide is an oral antidiabetic agent with relatively short elimination half life. Inclusion complex of Glipizide with _-cyclodextrin was prepared by kneading method and evaluated for its in-vitro release. Phase solubility studies were performed according to method reported by Higuchi and Connors which was classified as AL type characterized by apparent 1:1 stability constant. The Glipizide and Beta Cyclodextrin found to be compatible which was observed from FTIR spectra of Glipizide _- CD Complex. The dissolution study of Glipizide _- CD complex shows significant increase in the drug release than pure drug. Matrix Glipizide _- CD complex tablet complex equivalent to 10 mg Glipizide were prepared by using Hydroxy propyl methyl cellulose (HPMC), Carboxy methyl cellulose sodium (NaCMC) and Microcrytalline cellulose (MCC). The tablets were evaluated for various tests like hardness, friability, disintegration and in-vitro dissolution studies
Flavonoid Contents From Some Capparidaceous Medicinal Plants of North-West Rajasthan
Get PDFEvaluation of flavonoid contents from three selected medicinal plant species of capparidaceae family growing in North–Western Rajasthan was carried out. The leaves of Capparis decidua, Cleome gynandra and Cleome viscosa were analysed for flavonoid contents i.e. Quercetin and Kaempferol. Flavonoid contents like Quercetin and Kaempferol were isolated and identified. The maximum total flavonoid contents (1.16mg./gdw) was found in leaves of Capparis decidua while minimum (0.71mg./gdw) in leaves of Cleome viscosa
Stability indicating RP HPLC method for determination of levitiracetam in pharmaceutical formulation
Get PDFThe article reports on a development of RP-HPLC method for the quantitative determination of Levetiracetam in tablet dosage forms. The chromatographic separations were performed using Phenomenex_ C18 (250 mm x 4.6 mm i.d, 5 μm particle size) column at 40 ºC temperatures. The optimum mobile phase consisted of methanol, water and acetonitrile in the ratio of 30:10:60. Auto sampler 20 μl was used and kept at 15 ºC temperature. Analysis was done with flow rate of 1.0 ml/min at 212 nm (_ max of Levetiracetam) wavelength by using photodiode array (PDA) detector. The drug was analyzed for acid, alkaline, oxidative, hydrolytic, photolytic and thermal degradation studies. The standard calibration curve was plotted for the drug and results showed that the drug was linear (r2 = 0.999) in the concentration range between 0.01 – 1.5 μg/ml. The results of stress testing undertaken according to the International Conference on Harmonization (ICH) guidelines reveal that the selected method is selective and stability-indicating for determination of levitiracetam in pharmaceutical formualtion
Formulation and Characterization of Transdermal Patches of Losartan
Get PDFAdministration of drugs through skin has received great attention through the last decade.Hence this study aims to formulate an anti-hypertensive drug losartan as transdermal patch using different bioadhesive polymers such as ethyl cellulose, cellulose acetate, and polyvinyl pyrrolidon,hydroxyl propylemethylcellulose with plasticizers propylene glycol(PG). Patches were prepared though solvent evaporation method, The backing membrane was a non permeable aluminium foil laminated with polyethylene and evaluated for thickness uniformity, Uniformity of weight, Scanning Electron Microscopy, Surface pH,Swelling studies, Drug content uniformity Effect on agingn, skin irritation potential, and In vitro release study.Patches exhibited controlled release over more than 2 hr.It was concluded that patches containing 30 mg of losartane with HPMC (formulation F2),showed moderate swelling, surface pH and controlled drug release, thus can be selected for the development of transdermal patches for effective uses
Modified Approaches for Colon Specific Drug Delivery System: A Review
Get PDFThe colon is a site where both local and systemic delivery of drugs can take place. Local delivery allows topical treatment of inflammatory bowel disease. However, treatment can be made effective if the drugs can be targeted directly into the colon, thereby reducing the systemic side effects. This review mainly describes the primary approaches for CDDS (Colon Specific Drug Delivery) namely prodrugs, pH and time dependent systems, and microbially triggered systems, which achieved limited success and had limitations as compared with newer CDDS namely pressure controlled colonic delivery capsules. Oral administration of different dosage forms is the most commonly used method due to flexibility in design of dosage form and high patient acceptance, but the gastrointestinal tract presents several formidable barriers to drug delivery. In oral colon-specific drug delivery system, colon has a large amount of lymphoma tissue (facilitates direct absorption in to the blood), negligible brush boarder membrane activity, and much less pancreatic enzymatic activity as compared with the small intestine. Colon-specific drug delivery has gained increased importance not just for the delivery of the drugs for treatment of local diseases associated with the colon but also for its potential for the delivery of proteins and therapeutic peptides. Different approaches are designed based on prodrug formulation, pH-sensitivity, time-dependency (lag time), microbial degradation and osmotic pressure etc to formulate the different dosage forms like tablets, capsules, multiparticulates, microspheres, liposomes for colon targeting. The delivery of drugs to the colon has a number of therapeutic implications in the field of drug delivery. In the recent times, the colon specific delivery systems are also gaining importance not only for local drug delivery of drugs but also for the systemic delivery of protein and peptide drugs. This review updated the research on different approaches formulation and evaluation of colon-specific drug delivery