title: A comparative histological study of alginate beads as a promising controlled release delivery for mefenamic acid.
abstract: The new mefenamic acid-alginate bead formulation prepared by ionotropic gelation method using 3 x 2(2) factorial design has shown adequate controlled release properties in vitro. In the present study, the irritation effects of mefenamic acid (MA), a prominent non-steroidal anti-inflammatory (NSAI) drug, were evaluated on rat gastric and duodenal mucosa when suspended in 0.5% (w/v) sodiumcarboxymethylcellulose (NaCMC) solution and loaded in alginate beads. Wistar albino rats weighing 200 +/- 50 g were used during in vivo animal studies. In this work, biodegradable controlled release MA beads and free MA were evaluated according to the degree of gastric or duodenal damage following oral administration in rats. The gastric and duodenal mucosa was examined for any haemorrhagic changes. Formulation code A10 showing both Case II transport and zero order drug release and t(50) % value of 5.22 h was chosen for in vivo animal studies. For in vivo trials, free MA (100 mgkg(-1)), blank and MA (100 mgkg(-1)) loaded alginate beads (formulation code A10) were suspended in 0.5% (w/v) NaCMC solution and each group was given to six rats orally by gavage. NaCMC solution was used as a control in experimental studies. In vivo data showed that the administration of MA in alginate beads prevented the gastric lesions.
authors: Department of Pharmaceutical Technology, Faculty of Pharmacy, Ege University, Izmir, Turkey. ferhan.sevgi@ege.edu.tr
authors: Ferhan
authors: F
authors: Sevgi
authors: Buket
authors: B
authors: Kaynarsoy
authors: Mine
authors: M
authors: Ozyazici
authors: Cetin
authors: C
authors: Pekcetin
authors: Dogan
authors: D
authors: Ozyurt
mesh_terms: D000284:Administration, Oral; D000464:Alginates / Q000737:chemistry*; D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage* / Q000633:toxicity; D002266:Carboxymethylcellulose Sodium / Q000737:chemistry; D002626:Chemistry, Pharmaceutical; D003692:Delayed-Action Preparations; D004337:Drug Carriers / Q000737:chemistry*; D005753:Gastric Mucosa / Q000187:drug effects; D005782:Gels; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D007413:Intestinal Mucosa / Q000187:drug effects; D008528:Mefenamic Acid / Q000008:administration & dosage* / Q000633:toxicity; D051381:Rats; D017208:Rats, Wistar; D018675:Toxicity Tests
chemical_list: D000464:Alginates; D000894:Anti-Inflammatory Agents, Non-Steroidal; D003692:Delayed-Action Preparations; D004337:Drug Carriers; D005782:Gels; D006603:Hexuronic Acids; D008528:Mefenamic Acid; D020723:Glucuronic Acid; D002266:Carboxymethylcellulose Sodium