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1.
Pak J Pharm Sci ; 34(3): 915-924, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-34602414

RESUMO

In order for preparing a solid oral dosage form, tablet quality is of significant concern. Compressibility behavior of different powders and mixtures of formulations and release pattern of any tablets are characteristic measures to define prerequisite quality attributes of any compressed formulations. There are basically two major methods that can be adopted for the preparation of tablets including granulation and direct compression. Later process offer fewer processing steps and agreeable release profile with acceptable quality parameters and hence preferred over granulation method. In this investigation Mebeverine hydrochloride an anti-muscarinic drug is studied for compression and release behavior using various concentrations of filler binders and disintegrants via rotatable central composite design (CCRD) option of design expert (software). Nine formulations were developed from F1 to F9 with Crospovidone (superdisintegrant) as (X1) (-α=1.17% to ± α=6.83%) and microcrystalline cellulose (Avicel 102, Filler/binder) as X2 (-α = 29.82% to ± α = 65.18%). Disintegration Time (DT) as (R1) and Hardness in (kg) as (R2) were determined as two dependent response variables. The performance of powder blends and formulations was analyzed by micromeritic and physico-chemical and assessments. Dissolution comparisons were statistically analyzed by ANOVA and model dependent and in-dependent methods. Best fit model was found to be Hixon-crowell's model (r2 = 0.995) followed by Weibull's model (r2 = 0.985). The Trial formulations F2, F4, F6 and F8 were also studied on accelerated conditions (40±5ºC 75%±5% RH) for stability tests and validity of the formulations in months were also determined between 35-39 months.


Assuntos
Anticonvulsivantes/administração & dosagem , Anticonvulsivantes/farmacocinética , Fenetilaminas/administração & dosagem , Fenetilaminas/farmacocinética , Comprimidos , Celulose , Química Farmacêutica , Liberação Controlada de Fármacos , Estabilidade de Medicamentos , Excipientes , Dureza , Técnicas In Vitro , Excipientes Farmacêuticos , Povidona
2.
Pak J Pharm Sci ; 33(2(Supplementary)): 821-826, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32863257

RESUMO

Clinical and hospital pharmacy services are not just medical and pharmaceutical sciences but also occupy significant placement in healthcare system. Pakistan is a developing state with a huge prerequisite for changes in the general wellbeing framework, specially hospital and clinical aspect of pharmaceutical services. The principal intention of this study is to analyze the services offered by different pharmacies in hospitals of Karachi in terms of infrastructure and personnel service qualities. The study was conducted in a cross sectional way that included stratified sampling technique. Reactions were broken down utilizing descriptive and inferential insights of measurements. The fundamental result procedures incorporated the scope of hospital pharmacy services, the general recruitment of clinical drug specialists (pharmacist), the product and equipment used in hospital pharmacy services, the background of staff (educational), acquisition of proficient training mode, practical involvement and experience. The clinical pharmacy facilities coverage mutually on the departmental scale (median =22.43%) and patient scale (median =17.25%) do not comply the 100% coverage that is obligatory for standard practices. In addition, 48.65% of the pooled hospitals data has shown absence of distinct administration rules for hospital and clinical pharmacists, and 45.33% lacks the use of rational drug software. It is concluded that important parameters like drug monitoring, medication records keeping; appropriate drug information software's and quality assurance in hospitals still need attention for better patient outcomes.


Assuntos
Serviço de Farmácia Hospitalar/estatística & dados numéricos , Mobilidade Ocupacional , Estudos Transversais , Humanos , Paquistão , Farmacêuticos/estatística & dados numéricos , Recursos Humanos/estatística & dados numéricos
3.
Pak J Pharm Sci ; 31(5(Supplementary)): 2157-2162, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30393227

RESUMO

Healthcare professionals including physicians and pharmacists have been trying since long to come across and work out regarding the issue of generic alternatives, which is highly affected by factors like therapeutic efficacy, cost effectiveness, aesthetic and elegant appearance and implementation of packaging number over the drug product. However, the community pharmacist professionals are also facing difficulty in making decision regarding selection and dispensing the most efficacious brand to the patients. In this regard, the initiation of recent approaches for the development of amenable drug products has led to evolve the concept of generating new avenues for achieving higher patient compliance. Hence, the objective of this study was to evaluate the quality attributes and make comparisons regarding different brands of Dexibuprofen available in market of Karachi, Pakistan. The study is based on evaluation of physical chemical parameters of five different brands. Moreover, a comparative dissolution profile of selected brands of Dexibuprofen was also performed by applying numerous approaches. DEX-1was selected as reference while DEX-2- DEX-5 was selected as test brands. Results of all the selected brands met all the compendial requirements. Interpretation of the entire aforementioned test was evaluated using model independent, model- dependent and one - way ANOVA. The work presented in this study has been designed to provide quality standard products easily accessible in Pakistani market.


Assuntos
Anti-Inflamatórios não Esteroides/farmacocinética , Anti-Inflamatórios não Esteroides/normas , Liberação Controlada de Fármacos , Ibuprofeno/análogos & derivados , Pesquisa Qualitativa , Anti-Inflamatórios não Esteroides/análise , Humanos , Ibuprofeno/análise , Ibuprofeno/farmacocinética , Ibuprofeno/normas , Equivalência Terapêutica
4.
Pak J Pharm Sci ; 28(4): 1401-8, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-26142531

RESUMO

Lysine executes imperative structural and functional roles in body and its supplementation in diet beneficial to prevent the escalating threat of protein deficiency. The physical mutagenesis offers new fascinating avenues of research for overproduction of lysine through surplus carbohydrate containing agriculture waste especially in developing countries. The current study was aimed to investigate the potential of UV mutated strain of Brevibacterium flavum at 254 nm for lysine production. The physical and nutritional parameters were optimized and maximum lysine production was observed with molasses (4% substrate water ratio). Moreover, supplementation of culture medium with metal cations (i.e. 0.4% CaSO4, 0.3% NaCl, 0.3% KH2PO4, 0.4% MgSO4, and 0.2% (NH4) 2SO4w/v) together with 0.75% v/v corn steep liquor significantly enhanced the lysine production up to 26.71 ± 0.31 g/L. Though, concentrations of urea, ammonium nitrate and yeast sludge did not exhibit any profound effect on lysine production. Biological evaluation of lysine enriched biomass in terms of weight gain and feed conversion ratio reflected non-significant difference for experimental and control (+ve) groups. Conclusively, lysine produced in the form of biomass was compatible to market lysine in its effectiveness and have potential to utilize at commercial scale.


Assuntos
Agricultura , Brevibacterium flavum/metabolismo , Galinhas/crescimento & desenvolvimento , Lisina/biossíntese , Animais , Biomassa , Brevibacterium flavum/genética , Brevibacterium flavum/efeitos da radiação , Mutação , Nitrogênio/metabolismo , Cloreto de Sódio/farmacologia , Temperatura , Raios Ultravioleta
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