Battle between plants as antioxidants with free radicals in human body

Free radicals are constructed by natural physiological activities in the human cells as well as in the environment. They may be produced as a result of diet, smoking, exercise, inflammation, exposure to sunlight, air pollutants, stress, alcohol and drugs. Imbalanced redox status may lead to cellular oxidative stress, which can damage the cells of the body, resulting in an incidence of various diseases. If the endogenous antioxidants do not stop the production of reactive metabolites, they will be needed to bring about a balance in redox status. Natural antioxidants, for example plants, play an important part in this context. This paper seeks to report the available evidence about oxidative stress and the application of plants as antioxidant agents to fight free radicals in the human body. For this purpose, to better understand oxidative stress, the principles of free radical production, the role of free radicals in diseases, antioxidant defense mechanisms, and the role of herbs and diet in oxidative stress are discussed. Keywords: Free radicals, Antioxidant, Plant, Human health, Oxidative stres

Histological study of os cordis of sheep

History and Objectives: In order to histological evaluation of os cordis, this study was performed on some of its specimens at the ward of anatomy of faculties of medicine and dentistry of Shaheed Beheshti University of Medical Sciences in 1377. Materials and Methods: This study was performed by descriptive method. Five samples of os cordis were obtained from hearts of sheep and were fixed by formalin. After decalcification by formic acid and dehydration, it was cleared and embedded in paraphine. Then these sections, with 5 microns thickness, were stained by the hematoxylin and eosin method. Results: In slides of each 5 samples of the os cordis hyaline cartilage and spongeous bone were observed. The central spaces of the bone contained bone marrow with hematopoietic and megakaryocytic cells. Conclusion: These os cordis showed hematopoietic activity so further investigation on the vascular communications and their function is recommended

Hot And Cold: An Old Theory With Modern Applications

The use of traditional medicine as an important part of complementary/alternative medicine spread nowadays all around the world. Something that is due to the lack of effectiveness of modern medicine in treating some disease especially chronic disease. Since one of the most important theories beside traditional medicine is the concept of “temperaments” and this is very close to the concept of personalized medicine, which is taken into consideration nowadays. It is important to investigate what really temperament is and also reach a precise meaning and criteria for determining it. For reviewing all the researches that have been done on temperaments till today, the most popular database like PubMed, Scopus, Google scholar, science direct and etc. were searched for keywords Hot and cold, temperaments, hot and cold medicine, hot and cold nature, hot and cold parameters till September 2015. The results show that there are some physiological and metabolic criteria, genes and networks and metabolite that contribute in determining the temperaments not only in body but also in disease, foods and drugs. Despite the presence of all these detailed data the lack of a comprehensive practical criteria for temperament is still obvious, so we try to gather all data to reach that in its best way.</p

Experimental study of microbial enhanced oil recovery in oil-wet fractured porous media

Without Enhanced Oil Recovery (EOR) operations, the final recovery factor of most hydrocarbon reservoirs would be limited. However, EOR can be an expensive task, especially for methods involving gas injection. On the other hand, aqueous injection in fractured reservoirs with small oil-wet or mixed-wet matrices will not be beneficial if the rock wettability is not changed effectively. In the current research, an unpracticed fabrication method was implemented to build natively oil-wet, fractured micromodels. Then, the efficiency of microbial flooding in the micromodels, as a low-cost EOR method, is investigated using a new-found bacteria, Bacillus persicus. Bacillus persicus improves the sweep efficiency via reduction of water/oil IFT and oil viscosity, in-situ gas production, and wettability alteration mechanisms. In our experiments, the microbial flooding technique extracted 65% of matrix oil, while no oil was produced from the matrix system by water or surfactant flooding