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		题名	作者	年代	出处	被引量
	1	Formulation and evaluation of novel stomach specific floating microspheres bearing famotidine for treatment of gastric ulcer and their radiographic study显示文摘Objective:To develop and characterize multiple-unit-type oral floating microsphere of famotidine to prolong gastric residence time and to target stomach ulcer.Methods:The floating microspheres were prepared by modified solvent evaporation method,Eudragil S-100 was used as polymer.Microspheres were characterized for the micromeritic properties,floating behavior,entrapment efficiency and scanning electron microscopy.The invitro release studies and floating behavior were studied in simulated gastric fluid at pH 1.2.Different drug release kinetics models were also applied for all the batches.Selected formulations were also subjected for X-ray radiographic study.Results:Floating microspheres were successfully prepared by modified solvent evaporation technique.Microspheres showed passable flow properties.The maximum yield of microspheres was up to(95.11±0.35)%.On the basis of optical microscopy particle size range was found to be ranging from(52.18±182.00) to(91.64±5.16) μm.Scanning electron microscopy showed their spherical size,perforated smooth surface and a cavity inside microspheres.Microspheres were capable to float up to 20 h in simulated gastric fluid.X-ray radiographic studies also proved its better retention in the stomach.Conclusions:On the basis of the results,such dosage forms may be a good candidate for stomach targeting and may be dispensed in hard gelatin capsules.	Rishikesh Gupta Sunil Kumar Prajapati Snigdha Pattnaik Peeyush Bhardwaj	2014	Asian Pacific Journal of Tropical Biomedicine2014，4，9：	2

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