the old wishes of people were to regenerate lost tissues of periodontium that this fact is achieved by gen and cell therapy .periodontal disease is a chronic inflammation around the tooth by microbes that causes destruction of supporting structure of tissue of tooth such as alveolar bone, cementum and periodontal ligament. for treatment of periodontal diseases we can use the biomaterials which ...

background  spermatogonial stem cells (sscs) are the foundation of spermatogenesis. sound wave especially low intensity ultrasound (lius) can be effective on increasing the number of cells. in this study we investigated the effect of lius stimulation on mouse sscs proliferation and colonization. methods: isolated sscs from neonate mice cultured in dmem culture medium with 10% fetal bovine serum...

cell therapy is a modern approach in the treatment of most of the diseases which uses stem cells and it has been recently developed rapidly. cell therapy has shown satisfactory results in this way. our country, iran, has played an important role in the development of this new method and the results of stem cell treatment used for the most of the diseases were successful. the results have led to...

background  to report normal variations of the limbal structures using in vivo laser scanning confocal microscopy. methods: this was a retrospective study of fourteen eyes from 11 healthy individuals. confocal imaging of cornea and limbus was performed using heidelberg retina tomograph iii rostock corneal module. results: the typical structure of the palisades of vogt (pov) was detected in 57% ...

introduction perforation of maxillary sinus mucous membrane is of the most prevalent complication during open sinus lift surgery. moreover, such complication can usually be managed by an absorbable membrane. as far as absorbable membranes are concerned, decellularized maxillary sinus mucous membranes, which is an extracellular matrix, can be used as a biologic scaffold and insulating membrane i...

background nowadays using the stem cells has opened a new horizon in the medical science and is indeed a practical and non-invasive method for treating refractory diseases such as leukemias , lymphomas, blood disorders and so on. nonetheless, proper and sustainable uses of such powerful cells undoubtedly need to be as per certain ethical principles. of the existing challenges in using stem cell...

back ground  subsequent to spinal cord injury many pathological changes may occur that could lead to inappropriate environment for repair. the most important of such changes is the death of neurons. exogenous administration of growth factors that modulate neuronal survival, synaptic plasticity, and neurotransmission has been proposed as a potential therapeutic treatment for sci. among these gro...

background bone marrow transplantation (bmt)is nowadays used in various hematological disorders including leukemias. hemophilia a & b are sex linked bleeding disorders in which there are various genetic abnormalities in factor viii & ix genes. among various hematological disorders, bleeding disorders mainly hemophilia in now widely treated using plasma derived and recombinant factor viii & ix c...

almcm-41 was applied for adsorption of methylene blue (mb) and auramine (au) in single and binary component systems. in the single component systems, almcm-41 represents higher adsorption capacity for mb than au with the maximal adsorption capacity of 2.07×10−4 and 1.15×10−4 mol/g at 25 ˚c for mb and au, respectively. in the binary component system, mb and au exhibit competitive adsorption onto...

in this study, the densities, excess molar volumes and partial molar volumes of four binary systems containing n,n-dimethyl acetamide (dmac) with 1-alkanols (1-butanol up to 1-heptanol) are measured at 298.15 k. the results showed both constructive and expansive excess volumetric behavior for studying binary mixtures. deviation values of heavy alcohol have more positive and less negative excess...