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ISSN (Online): 0975-8232,
ISSN (Print): 2320-5148

International Journal Of
Pharmaceutical Sciences And Research

IJPSR is indexed with Embase

An International Journal published monthly
An Official Publication of Society of Pharmaceutical Sciences and Research

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Posted by on Mar 1, 2016 in | 0 comments

ANALYSIS OF TUMOR NECROSIS FACTOR G238A AND G308A GENE POLYMORPHISMS IN TUNISIAN PATIENTS WITH PRESSURE ULCER

Pressure ulcer (PU) is a complex and multifactor disease in which the cellular and molecular mechanisms contributing to risk of a delay in healing. An imbalance between pro-oxidant and antioxidant systems has been suggested to be implicated in the physiopathology of PU. Polymorphisms in TNF-α gene are emerging as key determinants of many diseases. The TNF-α (-238 and -308) G/A single-nucleotide polymorphisms (SNPs) are the most extensively studied. This study aimed to assess the value of serum pro-oxidant and antioxidant levels and to determine the role of a TNF-α gene SNPs in the pathogenesis of PU. 100 Tunisian subjects suffering of PU and 213 controls were admitted. Oxidant status was evaluated by the measure of homocysteine and thiobarbituric reactive oxygen substances. Antioxidant status was evaluated by the measure of total antioxidant status, serum catalase activity and trace elements. G308A and G238A variants of TNF-α gene were screened by AS-PCR and RFLP-PCR. Our results suggest that the unbalance between pro-oxidants and antioxidants seems to be more aggravated in patients suffering...

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HPMC BASED EXTENDED-RELEASE MATRIX TABLETS OF AN ANTI-PSYCHOTIC DRUG BY DRY GRANULATION METHOD

The aim of the present study was to develop and characterize an oral sustain release drug delivery system for commonly prescribed antipsychotic Quetiapine fumarate. Hydrophilic matrix based tablets using different concentrations of hydroxypropyl methylcellulose (HPMC) viz. K4M CR was developed using dry granulation technique. The prepared tablets were of 400 mg dose and were designed for once- daily administration. The formulations prepared were evaluated for the release of Quetiapine fumarate over a period of 24 hrs. Using USP type I dissolution test apparatus. The prepared tablets were evaluated for physical properties. The in- vitro drug release studies revealed that the tablets containing 12% of HPMC K4M CR of the total tablet weight showed satisfactory results and was able to control the release over 20 hrs. The in-vitro release data of prepared formulations followed Korsmeyer- Peppas and Higuchi kinetics strongly. The selected formulation was compared with the marketed product for the drug release pattern and was matched using similarity factor (f2) above 50. The selected formulation was evaluated in comparison...

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SYNTHESIS OF QUINOLINE DERIVATIVES BY REACTION OF DIMETHYL(2R,3S,4R)-2-PHENYL-4-(PHENYLAMINO)-1,3,4-TRIHYDROQUINOLINE-2,3-DICARBOXYLATE WITH SOME AMINES

In this work, quinoline derivatives were synthesized from reaction of aniline, benzylaldehyde and dimethylacetylene dicarboxylate (DMAD) in sequent steps to provide quinoline derivative dimethyl (2R, 3S, 4R)-2-phenyl-4-(phenylamino)-1, 3, 4-trihydroquinoline-2,3-dicarboxylate (12). Compound (12), was reacted with some amines such as  hydrazine hydrate, urea, thiourea, ethylenediamine, diaminopropane, dinitrophenylhydrazine and o-phenylenediamine to give (3aS,9R,9aS)-2-amino-3a-phenyl-9-(phenylamino)-4,9,9a-trihydro-pyrrolo[3,4-b]quinoline-1,3-dione (13),  (3aR) – 1,3 – dioxo – 3a-phenyl-9-(phenylamino)-4,9,9a-trihydro-pyrrolo[3,4-b]quinoline-2-carboxamide (14), (3aS)-1,3-dioxo-3a-phenyl-9-(phenylamino)-4,9,9a-trihydro-pyrrolo[3,4-b] quinoline – 2-carbothioamide (15),  6a-phenyl-12-(phenylamino)-2,3,4,5,7,12,12a-heptahydro-[1,4]diazocino[6,7-b]quinoline-1,6-dione (16),  (7aS)-7a-phenyl-13-(phenylamino)-2,3,4,5,6,8,13,13a-octahydro-[1,5]diazonino[7,8-b]quinoline-1,7-dione (17),  2-((2,4-dinitrophenyl)amino)-9-(phenylamino)- 4, 9, 9 a – trihydro-pyrrolo [3,4-b] quinoline-1,3-dione (18), and 2-(2-aminophenyl)-6a-phenyl-12-(phenylamino)-2, 4,5,7,12,12a-hexahydro-diazocino[3,4-b]quinoline-1,6- dione (19) respectively. Reaction of (12) sodium metal gave methyl 3-oxo-2-phenyl-5-(phenylamino)-1,2, 4,5-tetrahydro- benzo[b]azepine-4-carboxylate(20). These reactions were carried out with different solvents like acetonitrile, ethanol, and chloroform providing good yields of the new heterocyclic compounds (13-20) of quinoline derivatives. The identification of the compounds(13-20) were based on spectroscopic analysis such as IR, UV, 1H-NMR, 13C-NMR, and the microanalysis of the elements (CHN)...

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ENHANCEMENT OF DOMPERIDONE DISSOLUTION RATE VIA FORMULATION OF ADSORBATES AND CO-ADSORBATES

The aim of this study was to enhance the dissolution rate of water-insoluble, weakly basic antiemetic drug; Domperidone (DMP), through the formulation of adsorbates and co-adsorbates. Adsorption of drug onto the surface of three different adsorbents; Avicel PH 101, Florite R and Aerosil 200 was studied and Langmuir adsorption isotherms were constructed.  Adsorbates of drug with the used adsorbents were prepared in different weight ratios by physical mixing, grinding and solvent evaporation methods. Co-adsorbates of drug with Aerosil 200 and Tween 80 were prepared by solvent evaporation method in different weight ratios. The prepared systems were physico-chemically characterized by Fourier- transform Infrared Spectroscopy (FT-IR), Differential Scanning Calorimetry (DSC) and powder X-ray diffractometry (P-XRD). FT-IR data confirmed the absence of any chemical interaction between DMP and the used adsorbents. P-XRD results confirmed the transformation of some systems from the crystalline state to the amorphous state which aided in the dissolution rate enhancement. Furthermore, the in-vitro dissolution rate of drug from these systems was studied which showed marked enhancement of DMP...

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SATURATION SOLUBILITY OF SCOPOLAMINE IN THIN FILMS OF POLYACRYLATE PRESSURE SENSITIVE ADHESIVES IS TEMPERATURE DEPENDENT

The method of drug uptake from solid solution has been used to measure the saturation solubility of scopolamine base in various pressure sensitive adhesive DURO-TAKs at elevated temperature. The saturation solubility was strongly temperature dependent, being 50 – 100 % larger at 45°C than at 25°C. The higher temperature also caused much more rapid approach to equilibrium distribution of the drug between donor, separating membrane, and acceptor layers. With a cross-linked DURO-TAK 87-2677 the saturation solubility is 10.7 ± 0.30 % (n=4) at 25 °C, rising to 16.5 ± 0.54 % at 45 °C (n=4). The non-cross-linked DURO-TAK 87-4098 gives lower values of 6.3 ± 0.27% w/w(n=4) at 25 °C, rising to 13.2 ± 1.14 % at 45 °C. The hydrophobic DURO-TAK 87-2510gives the lowest values of 4.2 ± 0.17 % w/w (n=4) at 25 °C and 8.7 ± 0.45 % (n=4) at 45°C. The thermodynamic activity of the drug in the thin polymer film will therefore decrease as temperature...

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