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RISS 인기검색어
- 검색키워드
- 저자 : Arun Rasheed (검색결과 3 건)
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Formulation, characterization and in vitro evaluation of herbal sunscreen lotion
Rasheed, Arun,Shama, S. Neelufar,Mohanalakshmi, S.,Ravichandran, V. 경희한의학연구센터 2012 Oriental Pharmacy and Experimental Medicine Vol.12 No.4
Natural substances extracted from plants have recently been considered as potential sunscreen resources owing to high ultraviolet ray absorption and antioxidant activity. The decrease in the intensity of UV radiation reaching the skin through sunscreens may reduce the risk of sun-induced skin cancer. The present study attempts to develop sunscreen lotions, possessing broad spectrum of anti-UV radiation effectiveness with reduced concentration of chemical UV filters, from the extracts of bioactive products such as Curcuma longa L. (Zingiberaceae), Aloe vera (Liliaceae) and Alpinia galanga Willd. The effectiveness of the product was evaluated using Sun Protection Factor (SPF). Curcumin was selected as potential bioactive agents due to their phytochemical compositions possessing considerable content of polyphenolic compounds and Alpinia galanga is used as key ingredient in various commercial sunscreen lotions as it has skin protectant action against UV rays and boosts the activity of conventional sunscreens. The sunscreen lotions were prepared using three different compositions F1, F2 and F3 and evaluated for their stability, safety and SPF. Results showed that the sunscreen lotions were non-mutagenic, non-irritant, stable and possess SPF for normal skin. The efficacy when tested with a standard was observed to be same as that of a marketed sunscreen with SPF 55 and SPF 20. From the present study, formulation F2 having curcumin extract was proved to be stable and effective with high SPF compared to F1 and F3.
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Rasheed, Arun,Roja, C.,Reddy, G. Avinash Kumar,Reddy, B. Sravya 경희한의학연구센터 2012 Oriental Pharmacy and Experimental Medicine Vol.12 No.1
Ayurvedic formulations were considered the best and safer alternatives for synthetic drugs. But the demand to such products is diminishing due to lack of standardization. Ashwagandharishtam, a fermented kind of ayurvedic formulation, is used to treat epilepsy, nervous disorders, skin diseases, immune disorders and rheumatism. In the present study, the standardization of Ashwagandharishtam using sophisticated techniques were attempted for assessing the quality and safety of herbal products involved in it. It was formulated according to a working formula and its physicochemical, pharmacological and biological parameters were determined. The results of physicochemical studies showed that the values were under acceptable limits as per the Ayurvedic Pharmacopoeial specifications. FTIR studies of formulation revealed the presence of functional groups similar to Ashwagandha powder. The heavy metal content in the formulation is determined using Atomic Absorption Spectroscopy. HPTLC reports proved the presence of biomarker, withanolide-A in ashwagandharishtam which helped in its chemical standardization. The anti-epileptic activity of ashwagandharishtamwas evaluated by Maximal electro shock (MES) method in rats. It exhibited a dose dependent significant (P<0.001) reduction in various phases of epileptic seizures when compared with that of standard phenytoin. It was also assessed for its anti inflammatory activity in carrageen induced paw edema method which showed a good activity comparable to standard thus making it biologically standardized.
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Harini Chowdary Vadlamudi,Prasanna Raju Yalavarthi,Tejeswari Nagaswaram,Arun Rasheed,Jaya Preethi Peesa 한국약제학회 2019 Journal of Pharmaceutical Investigation Vol.49 No.1
Quetiapine fumarate has possessed low solubility and extremely poor bioavailability, which restricts its oral administration. In order to address this concern, microemulsification technique was envisaged. Solubility of quetiapine was assessed in various liquid vehicles (oils, surfactants and cosurfactants) for the selection of carriers in self microemulsifying drug delivery system (SMEDDS) formulation. Microemulsion region was identified from the pseudoternary phase diagram. Quetiapine was loaded in preconcetrates of the predetermined microemulsion region. Quetiapine loaded SMEDDS were characterized for FTIR, pH, viscosity, zeta potential, and evaluated for drug content, in-vitro dissolution, in-vitro diffusion, and ex-vivo permeation. Optimized liquid SMEDDS were renewed into S-SMEDDS by adsorption and melt granulation technique. Formulated S-SMEDDS were characterized for micromeritics, DSC, SEM, and evaluated for drug content, reconstitution time, drug release, stability and anti-psychotic activity in animals for amphetamine induced stereotypy and swimming normalization test. The formulations of O11, O13, C6 and C10 liquid SMEDDS had shown drug release of 92, 94.16, 68.59 and 55.03% respectively at the end of 1 h. S-SMEDDS exhibited good micromeritics with a drug content of 80 to 90% and released drug up to 96%. AO13 of S-SMEDDS had 1.2 years of shelf life and exhibited better anti-psychotic activity owing to enhanced biomembrane permeation in the presence of tweens as surfactants. The spontaneous formation of microemulsion from adsorption based S-SMEDDS resulted in hasty drug release. Thus the results of the study indicated that self microemulsification of quetiapine and subsequent solidification is the better alternative in affording optimal pharmacotherapy of psychosis.
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