physicochemical

Dental implant is a pharmaceutical device in the form of strip with very small loading and size of 0.25 sq cm. For site-specific one-time continuous delivery of Gatifloxacin an antimicrobial compound with excellent activity against anaerobic micro-organism in the treatment of periodontal disease was prepared by solvent casting technique using ethyl cellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose K4M and Eudragit RL-100 with dibutylphthalate as plasticizer. The physicochemical parameters like thickness, weight variation, content uniformity and release characteristics were evaluated The drug release was initially high on day one to achieve immediate therapeutic level of drug in pocket, followed by marked fall in release by day two, and progressive moderate release profile to maintain therapeutic level following anomalous transport mechanism. Formulation F6 released 97.34% of drug at the end of 144 h and was considered as best formulation. In vitro antibacterial activity was carried out on Streptococcus mutans .

  The whole-plant, Pergularia daemia (Family: Asclepediaceae), extract (50% alcohol) was investigated for phytochemical, physico-chemical parameters and its anti-inflammatory activity. Preliminary organic analysis revealed the presence of alkaloids, flavonoid, steroid, triterpenoid and phenolic compounds in the extract. Physiochemical studies revealed that total ash is 13.62%, acid insoluble ash is 1%, alcohol soluble extractive value is 17.6%, water soluble extractive value is 30.4% and loss on drying at 105°C is 10.6%.  The anti-inflammatory activity was evaluated using carrageenan-induced paw edema (acute inflammation) and chronic models like; cotton pellet granuloma and carrageenan air pouch granuloma. Oral administration of the extract (50 and 100 mg/kg) exhibited significant anti-inflammatory activity in acute and chronic models (p < 0.01) of inflammation. In conclusion, present investigation established specific identities that will be useful in identification and authentication of the raw drug and pharmacological evidences to support the folklore claim that P. daemia is used as anti-inflammatory agent.   Key words: Pergularia daemia, physicochemical, carrageenan, cotton-pallet