Influence of Tween 80 Surfactant on the Binding of Roxatidine Acetate and Roxatidine Acetate–loaded Chitosan Nanoparticles to Lysozyme

The drug binding to protein is an attractive research topic. In order to assess the release of RxAc-CsNPs and their binding with lysozyme under physiological conditions, nanocomposite materials based on chitosan (Cs) and Roxatidine acetate (RxAc) in the presence Tween 80 (Tw80) surfactant were developed. The addition of Tw80 to CsNPs increased RxAc release in vitro. In this work, Stern–Volmer plot and thermodynamic results indicated that the mechanism of Lyz with RxAc and Lyz with RxAc-CsNPs was static mechanism and the main forces in both systems were hydrogen bonding and Van der Waals forces, which indicated that the binding reaction in both systems is spontaneous, exothermic and enthalpically driven. Synchronous fluorescence and CD results indicated that the RxAc and RxAc-CsNPs cause change in the secondary construction of Lyz. It was also found that the addition of Tw80 affects the binding constant of drug with protein. Finally, the molecular docking results have also been in accordance with the results of other techniques. Hence, the developed RxAc loaded Chitosan nanoparticles could be used as an effective strategy for designing and application of the antiulcer drugs. Altogether, the present study can provide an important insight for the future designing of antiulcer drugs.

Determination of ureid content in shoots of russian pea shrub and siberian pea tree

Among natural ureides, allantoin (5-ureidohydantoin or 2,5-dioxoimidazolidin-4-yl urea) is the most famous compound which have been found in various organisms: bacteria, plants, and animals. Allantoin is a product of purine catabolism in mammals (except for primates and humans) and insect larvae. It is found in many plants: comfrey (Symphytum officinale L.), soybean (Glycine hispida (Moench) Maxim), alfalfa (Medicago sativa L.), purslane (Portulaca oleracea L.). Allantoin has a reparative, antimicrobial, and anti-inflammatory effect, that substantiate it use in the composition of numerous cosmetic and therapeutic dermatological agents. It can be used also used for the treatment of gastroduodenal ulcers and chronic gastritis. In most species of the legume family allantoin is a transport form of nitrogen, besides, its role in the adaptation of plants to stress factors is known. The plants of the genus Caragana (Caragana) of the legume family (Fabaceae), due to nitrogen-fixing bacteria, receive nitrogen from the soil and convert it into transport forms, namely allantoin and allantoic acid. These substances were previously isolated from the shoots of russian pea shrub (Caragana frutex (L.) C. Koch) and siberian pea tree (Caragana arborescens Lam.) and identified, but the quantitative content of ureids in these raw materials has not been studied. The aim of the work was to determine the content of ureides in the shoots of russian pea shrub tree and siberian pea tree. The objects of study were shoots of russian pea shrub tree and siberian pea tree harvested in Kharkov in May 2019 (during flowering period). The total ureide content was determined by spectrophotometric method based on the reaction of chemical decomposition of allantoin to glyoxylic acid with subsequent formation of coloured phenylhydrazone, which had absorption maximum at 530 nm. The study results have shown that the content of ureides (expressed as allantoin) is slightly lower in the shoots of russian pea shrub than in the shoots of siberian pea tree and equals 0.34 ± 0.03% and 0.41 ± 0.02% respectively. The content of total ureids in the shoots of russian pea shrub and siberian pea tree was determined. The flowering shoots of these plants can be used as herbal raw material for the development of therapeutic and prophylactic dermatological and antiulcer drugs possessing reparative, anti-inflammatory, and astringent effects.

Drug utility pattern of antiulcer agents used in osteoarthritis patients at tertiary care hospital

Background: Osteoarthritis is the most common form of joint disease and the leading cause of pain in elderly people. Osteoarthritis (OA) is a progressive and painful chronic disease that mainly affects knee, hand and hip joints.Aim of study was to evaluate current trend of antiulcer drugs and to assess the group of antiulcer agents use in osteoarthritis patient.Methods: A prospective observational study was conducted in a tertiary care hospital for period of twelve months in collaboration with department of orthopaedics. Patients data recorded in case report form and analysed to study prescription pattern and related information Results: Total of 630 cases were enrolled in this study. Prescribed antiulcer drugs in OA were ranitidine, omeprazole, pantoprazole, rabeprazole, sucralfate and esomeprazole. Most commonly prescribed drug was Ranitidine i.e. 80.79% followed by omeprazole i.e. 8.42% pantoprazole i.e. 3.97% rabeprazole i.e. 3.81%, sucralfate i.e. 2.53% and esomeprazole i.e. 0.48% respectively. In this study, the commonest group prescribed was H2 blockers i.e. 80.79% followed by proton pump inhibitors i.e. 16.68%, and ulcer healing agent i.e. 2.53% respectively.Conclusions: Most commonly prescribed drug was ranitidine followed by omeprazole, pantoprazole, rabeprazole, sucralfate and esomeprazole respectively. In this study, the commonest group prescribed was H2 blockers followed by proton pump inhibitors, and ulcer healing agent respectively.

NONANTIBIOTICS ENHANCE THE ANTIBACTERIAL ACTIVITY OF CEFTRIAXONE AGAINST METHICILLIN-RESISTANT STAPHYLOCOCCUS AUREUS

Objectives: Antibiotic resistance is one of the most persistent issues worldwide nowadays, and methicillin-resistant Staphylococcus aureus (MRSA) infection is one such issue where the standard therapeutic procedures involving powerful antibiotics have failed in controlling the infection.Methods: In the present study, the antibacterial potency of the nonantibiotics troxipide (TR), mebeverine hydrochloride (Hcl), and their combinations with ceftriaxone (CEF) against MRSA has been investigated using microbiological assays of microplate dilution method and combination index interpretations of the nonantibiotics with β-lactam antibiotic CEF and the zone of inhibition method.Results: The nonantibiotics ME and TR inhibited resistant strain tested in vitro in the checkerboard assay, where the results showed that CEF and TR exhibited minimum inhibitory concentration (MIC) at concentrations of 50 μg/ml and 318 μg/ml, respectively. Interestingly, CEF when combined with TR reduced the MIC to 8 μg/ml and 78 μg/ml. According to the results, CEF with TR exhibited synergistic interactions at the fractional inhibitory concentration of 0.36–1.4. ME and TR and its combinations, CEF with ME, and CEF with TR have considerable anti-MRSA efficacy, with synergism though at 36 h of incubation.Conclusion: ME and TR being antispasmodic and antiulcer drugs can also be used against MRSA infections, which could prove to be favorable in the reduction of dosage of antibiotics such as CEF, and cutting down the need for additional administration of antibiotics to the patients affected with multiple complications such as gastrointestinal ulcer, spasm difficulties, and infection.

Prescription pattern of drugs in ENT outpatient department of tertiary care teaching hospital

Background: Diseases of the ear, nose and throat (ENT) are common among general population affecting all age groups and accounts for most of the drugs prescribed and used. The aim of the study is to assess the prescription pattern of drugs in ENT outpatient department in a tertiary care teaching hospital.Methods: A prospective observational study was conducted from December 2017 to May 2018 in the ENT OPD (Outpatient department) at Pt. J.N.M. Medical College and associated Dr. B.R. Ambedkar Memorial Hospital, Raipur. Data were collected in a proforma and evaluated.Results: A total of 313 prescriptions were analysed. Most of the patients (40.89%) belonged to 13 - 35 years age group.185 patients (59.10%) were male and 128 patients were females (40.90%). A total of 1003 drugs were prescribed. The average number of drugs per prescription was 3.2. Most common class of drugs prescribed was antimicrobials (24.42%), followed by H1 antihistaminics (18.84%), antiulcer drugs (15.55%) and nonsteroidal anti-inflammatory (NSAIDs) drugs (14.35%). The average number of antimicrobials per prescription was 0.78. One or two antimicrobials were prescribed in 202 prescriptions (64.53%). The most common prescribed antimicrobial was of Penicillin group (64.89%) followed by Fluoroquinolone (25.71%). The most common prescribed route of drug administration was oral route (81.35%). The most common prescribed dosage form was tablets (74.87%). FDC constituted 24.62% of prescribed drugs.Conclusions: The study revealed that the most common class of drug prescribed was antimicrobials followed by H1 antihistaminics, antiulcer drugs and NSAIDS.