background: stem cells from human exfoliated deciduous teeth (shed) have the capability to differentiate into neural cells. neurotrophins including nerve growth factor (ngf), brain-derived neurotrophic factor (bdnf), neurotrophin-3 (nt-3), and neurotrophin-4 (nt-4) have neurogenesis, neurotrophic, or neuroprotective effects and are expressed in developing teeth. the aim of this study was to mea...

asthma is a chronic inflammatory disorder of the airways. the stress is a factor for asthma which indicates a disorder in the function of communicational mediators of nervous and  immunological systems  such  as  neurotransmitters.  a  study  indicated  that  blood serotonin concentration increases in asthmatic patients. other study indicates that one kind of the serotonin  receptors, named 5ht...

background: human bocavirus ( hbov) infection is of worldwide distribution. there is increasing evidence that hbov is pathogenic for the human gastroenteric tract. however, less data are available on the role of hbov in gastroenteritis. the present study was aimed to determine the prevalence of hbov in children with gastroenteritis.   methods : real-time pcr taqman was used to screen 200 stool ...

the plaque forming unit (pfu) and tissue culture infectious dose50 (tcid 50 ) methods are used for evaluation of vaccine heat stability and effect of various stabilizers on thermal stability of vaccines. the aim of present study is using real-time pcrtechniquefor estimation of vaccine degradation rate and thermal stability of measles vaccines. lyophilized measles vaccines containing three vario...

background and aims: prostate cancer is the second most common cancer in men worldwide in men. matrix metalloproteinase 2 (mmp2) has a role in the invasion and destruction of the basement membrane and the extra-cellular matrix and facilitating the process of tumor cell invasion. the present study was conducted to compare the expression of mmp2 gene in prostate cancer (pca) and benign prostatic ...

introduction: the protozoan parasite, cryptosporidium spp., widely spreads in both raw and drinking waters. it is the causative agents of waterborne diarrhea and gastroenteritis in the world. in the present study, a molecular assay was used for the detection and quantification of cryptosporidium oocysts in environmental water samples. materials and methods: thirty surface water samples were col...

background lung cancer is one of the most common causes of death worldwide. although smoking and environmental pollutants are the most important risk factors of lung cancer, the role of infectious causes should also be considered in the pathogenesis and progress of lung cancer. objectives this study examined the relationship between helicobacter pylori and lung cancer through serology, real-tim...

vacuolar h+-translocation pyrophosphatase (v-ppase) and na+/h+ antiporter (v-na+/h+) are important transporters in plant cells and have essential roles against abiotic stresses. in this study, the effects of salt stress were surveyed on the transcription of v-ppase pump and na+/h+ antiporter genes at early times of nacl treatment in roots of halophytic grass leptochloa fusca through the real ti...