Phytochemical screening and In Vitro Antioxidant potential of Memecylon umbellatum Burm leaf extracts

Objective: Different dry extracts of Memecylon umbellatum Burm leaf obtained by various solvents such as petroleum ether, chloroform, ethyl acetate, acetone, methanol and chloroform water (IP) was screened to reap the benefits of its antioxidant and free radical scavenging properties using ascorbic acid as standard antioxidants. Methods: The in vitro free radical scavenging activity was evaluated using diphenyl picryl hydrazyl (DPPH) radical method using various concentrations of dry extract in distilled water (1, 2, 4, 8, 16, 20 μg/ml) against blank with ascorbic acid as a standard in same concentrations. Results: Among the all extracts, Methanol leaf extract has showed higher Antioxidant activity (84.65 ± 0.064 %) having IC50 Value 11.81 ± 0.033 μg/ml at 20 μg/ml. While, IC50 value for ascorbic acid was found to be 8.91 ± 0.084 μg/ml. Conclusion: The results clearly indicate that Methanol leaf extract of Memecylon umbellatum is effective in free radical scavenging. So in future, this may emerge as promising natural herbal source of powerful antioxidant. Keywords: Memecylon umbellatum, DPPH reagent, Antioxidant activity, Ascorbic acid, IC50

Microscopic Evaluation of Leaves of Memecylon umbellatum Burm

Objective. Aim of present work is to perform the microscopic evaluation and physicochemical analysis and to explore the morphology parameters of Memecylon umbellatum Burm leaves. Methods. Fresh, dried and desiccated powdered leaf samples were studied for their morphology, microscopy, organoleptic characters, and an assortment of other WHO recommended methods for standardisation. Results. The microscopy revealed the dorsiventral nature of the leaf. Midrib showed presence of nonlignified phloem, lignified xylem with well-defined xylem fibers, vessels, and parenchyma. Presence of Phloecentric vascular bundles surrounded by endodermis and crystal sheath. Well-defined patches of collenchyma were observed above and below the vascular bundles in the midrib area. Trichomes are mostly absent and stomata (anomocytic) were observed on both epidermal surfaces. Conclusions. It can be concluded that the microscopic analysis and pharmacognostic parameters can serve as tool for developing standards for proper authentication, quality, and purity of Memecylon umbellatum Burm leaves

Implementation of time release technology in formulation development and evaluation of sustained release tablet of Lornoxicam

In present study, the attempts have been made to formulate sustained release tablets of lornoxicam by direct compression method. Based on viscosity grades different proportions of hydrophilic polymers (HPMC K4M, HPMC K15M, HPMC K100M) are used for preparation of lornoxicam sustained release matrix tablet. The drug excipient mixtures were subjected to preformulation studies comprising of micromeritic properties. The tablets were subjected to various studies like as physicochemical studies, in vitro drug release, kinetic studies, etc. FTIR studies shown there was no interaction between drug and polymers. The physicochemical properties of tablets were found within the limits. Lornoxicam is a first generation analgesic, inflammatory and antipyretic agent used in relieving symptoms of osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, acute sciatica and low back pain. From developed formulations batch F1 have shown zero order drug release behavior and prolong drug release over a period of 12 h which was deemed as suitable and optimum formulation for sustained drug delivery. Results of the present study indicated the suitability of the low viscous polymer in the proportion of (drug:polymer) 1:1 in the preparation of sustained release formulation of lornoxicam

Expulsion by Ionic Complexation: Benchmark Therapy for Atherosclerosis A Review

Ethylenediamine tetraacetic acid (EDTA) chelation therapy has been practiced since longtime for the treatment of cardiovascular diseases, alone or in combination with other treatments. It has been recommended as a harmless, relatively inexpensive and non-surgical method of restoring blood flow in atherosclerotic vessels. Ability of EDTA to form complex with heavy metals like calcium, lead, copper is used to remove calcium from arthrosclerosis plaques which ultimately improves the condition. It can be concluded that chelation therapy is emerging form of complementary or alternative medicine to surgery and can be used in safe manner. Still there is insufficient evidence to decide on the effectiveness or ineffectiveness of chelation therapy in improving clinical outcomes of patients with atherosclerotic cardiovascular disease