Posted by admin on Oct 1, 2013 in |
As described by the world health organization (WHO), depression is the most common and serious disorder leading to suicide. Numbers of synthetic drugs are available for the treatment of this fatal disease, but are associated with serious complications. A wide diversity of animal models has been used to examine antidepressant activity. These range from relatively simple models sensitive to acute treatment, to highly sophisticated models. The number of validated animal models for affective disorders is large and still growing. A basic understanding of the underlying disease processes in depression is lacking, and therefore, recreating the disease in animal models is not possible. For the animal model of depression, the relevance, reliability and reproducibility in laboratories need to be focused, currently used models of depression attempt to produce quantifiable correlates of human symptoms in experimental animals and the animal modeling remains a potentially important approach towards understanding neurochemical and neurobiological mechanisms in depression. Animal models of depression attempt to represent some aspect of the etiology, symptomatology and treatment of the...
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Posted by admin on Oct 1, 2013 in |
Hyaluronic acid is an important naturally occurring polysaccharide present in extracellular matrices. The network-forming, viscoelastic and the charge characteristics of hyaluronic acid are important to many biochemical functions of living tissues. Its involvement in many diseases such as cancer, arthritis and osteoporosis, and the fact that it has specific protein receptors present on the cell surfaces, has given new impetus in drug design and synthesis of hyaluronic acid-drug conjugates. As a general arrangement, the review will focus on structure and conformation of hyaluronic acid, its chemistry and chemical methodologies that have led to a number of important hyaluronic-drug...
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Posted by admin on Oct 1, 2013 in |
Introduction: Melatonin is a neuro-hormone secreted from the pineal gland and involved in various regulatory activities in body. Ever-increasing use of melatonin supplements and enlarging research evidences make the authors undertook the review to arrive at a qualitative conclusion whether melatonin supplements can act as potential treatment options or not. Methodology: A comprehensive search was undertaken in different electronic databases using various search terms. A total of 225 studies were identified including clinical research studies and basic experiments. Data were extracted individually from the studies and compiled in the end. Results: Melatonin has been used successfully in chronic insomnia and as an anti-oxidant in cancer and other age-related neuro-degenerative disorders, especially Alzheimer’s disease and Autistic disorders. Its evidences of use in other conditions remained insufficient and inconclusive. Conclusion: Melatonin therapy may be considered as efficacious and safe in insomnia and as an anti-oxidant; however, other roles needs to be evaluated in further...
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Posted by admin on Oct 1, 2013 in |
Embelia ribes Burm F. is large scandent shrub, disturbed throughout India and belongs to the family Myrsinacae. It is commonly known as false black pepper or Vidanga. E. ribes grows in semi-evergreen and deciduous forests at an altitude of 1,500m found in central and lower Himalayas, Arunachal Pradesh, Assam, Bengal, Orissa, Andhra Pradesh and Madhya Pradesh throughout India. Embelia ribes has been proven to have great pharmacological potential with a great utility and usage as folklore medicine. The root, berries and leaves of Embelia ribes is used in herbal formulas. It is used as antibacterial, antifertility activities, antiprotozoal, abdominal disorders, lung diseases, constipation, indigestion, fungus infections, mouth ulcer, sore throat, pneumonia, heart disease and obesity, analgesic, anti-inflammatory, antioxidant and formulations of Embelia ribes are Ardrakakhandavaleha, Eranda paka, Krimighna kashaya churna, Vidangadi churna, Taramandura guda, Guduchi lauha, Abhayarishta, Kumari asava, Manibhadra yoga, Pippalyasava, Kaishore guggulu, Vyoshadi guggulu, Saptavishantika guggulu, Eladi ghrita, Kasisadi ghrita, Chandraprabha vati, Wdangadi lauha, Vidanga...
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Posted by admin on Oct 1, 2013 in |
Pelletization can be defined as an agglomeration process that converts fine powders or particles of a bulk drug and excipients into small, free-flowing, more or less spherical units, called pellets. The size of the pellets is 0.5-2mm. Pellets have the free flowing capacity and have low porosity about 10%. Preparation methods include direct pelletizing,powder layering,Suspension or Solution layering, pelletization by extrusion and spheronization, spherical agglomeration, compression/balling,Cryo pelletization,melt spheronization, globulation or droplet formation, fluid bed coating. Pellets have various advantages when compare to normal conventional dosage forms, like they help in giving accurate dosage to the paediatrics and geriatrics and even to the bed ridden persons,reduces peak plasma fluctuation, Minimize potential side effects without lowering bioavailability, avoiding high local concentration, Less susceptible dose dumping. At present usage of pellets has increased largely due to their advantages and there novel approaches, the novel approaches of pellets includes; 1). They help in preparation of modified release multiple dosage form with different release patterns like immediate and sustained release pattern, 2) They help...
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