Posted by admin on Oct 1, 2012 in |
Antioxidants have important role in prevention and treatment of disorders and plants are considered as rich sources of radical scavenging compounds. Nowadays, many herbs are used in dried form which is possible to affect their antioxidant activity. In the present investigation, the effects of different drying methods on the antioxidant capacity and total phenolics content of some culinary plant species have been studied. Leaves of Mentha piperita, Mentha spicata, Thymus vulgaris and Anethum graveolense were dried in sun, shade, oven and microwave and extracted with methanol. Antioxidant activity of each extract was determined by DPPH free radicals and total phenolics content was measured by folin cio-calteus reagent. The results revealed that drying process reduced the antioxidant activity of Anethum graveolense whereas sun-drying and shade-drying increased the antioxidant activity of Mentha piperita, Mentha spicata and Thymus vulgaris (Lamiaceae). During sun-drying and shade-drying, total phenolics content increased for the three plants of Lamiaceae while oven- and microwave-drying reduced the phenolics content. Drying also declined the phenolics content of Anethum graveolense which...
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Posted by admin on Oct 1, 2012 in |
The objective of this study was to develop simple, precise, accurate, reproducible and economical vireodt’s method for simultaneous estimation of mesalamine (MSM) and prednisolone (PRD) in combined oral dosage form. The method involved measurement of absorbance at two wavelengths, 332nm and 246nm, λmax of MSM and PRD, respectively in phosphate buffer (pH 7.4) with dimethyl formamide (DMF) as cosolvent. The linearity was obtained in the concentration range of 5-50 µg/ml and 2-20 µg/ml for MSM and PRD, respectively. The average percent recovery of MSM and PRD was found to be 99.19+0.78% and 99.71+0.82%, respectively. The accuracy and precision were determined and recovery studies confirmed the accuracy of the developed method that was carried out following the International Conference on Harmonization (ICH) guidelines. The recovery study was carried out by standard addition method. The proposed method was found to be rapid, specific, precise, accurate, and reproducible and can be successfully applied for the routine analysis of MSM and PRD in pharmaceutical dosage...
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Posted by admin on Oct 1, 2012 in |
The course on “Herbal Medicines, Nutraceuticals and Dietary Supplements” has been implemented among the new courses within the 2007 curriculum of the Pharmacy Program, School of Food, Biochemical and Pharmaceutical Sciences at the Catholic University of Cuyo, located in San Juan Province, Argentina. The main objective of the course is to provide students with the necessary tools to acquire knowledge on new concepts of nutritional therapies, functional foods and dietary supplements. All of which are meant to revert or prevent unfavorable health conditions. This paper describes the methodology used in the development of the course, the minimum contents exposed, experience and teacher evaluation during the years 2009 and...
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Posted by admin on Oct 1, 2012 in |
Neuropathic pain is considered as an inappropriate response caused by a lesion or dysfunction in the PNS or CNS). Neuropathic pain can manifest itself as either without a stimulus (stimulus-independent pain) and/ or as pain hypersensitivity elicited after a stimulus (stimulus-evoked pain). Stimulus-independent pain includes symptoms described by the patient such as (a) continuous, burning pain (b) intermittent shooting, lancinating pain (c) some dysaesthesias. Conversely, stimulus-evoked pain describes signs the physician induces after mechanical, thermal or chemical stimulation, and usually involves hyperalgesia or allodynia. The mechanism(s) underlying neuropathic pain are not completely understood but are considered to be complex, multifactorial and to evolve over time. Neuropathic pain can be trauma (surgical and non-surgical), accidents, and exposure to toxins, infection, viruses, metabolic diseases, nutritional deficiency, ischemia, and stroke. Current research studies indicate that both peripheral and central mechanisms have been involved in pathogenesis of neuropathic...
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Posted by admin on Jan 1, 2012 in |
Solubility is one of the most important parameter to achieve desired concentration of drug in systemic circulation for therapeutic response. As a consequence of modern drug discovery techniques, there has been a steady increase in the number of new pharmacologically active lipophilic compounds that are poorly water soluble. It is a great challenge for pharmaceutical scientist to convert those molecules into orally administered formulation with sufficient bioavailability. Among the several approaches to improve oral bioavailability of these molecules, Self- micron emulsifying drug delivery system (SMEDDS) is one of the approaches usually used to improve the bioavailability of hydrophobic drugs. However, Conventional SMEDDS are mostly prepared in a liquid form, which can have some disadvantages. Accordingly, solid SMEDDS (S-SMEDDS) prepared by solidification of liquid/semisolid self-micron emulsifying (SME) ingredients into powders, have gained popularity. This article gives an overview of the recent advancements in S-SMEDDS such as development methods and the future research...
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