background: human sperm cryopreservation has proven to be very valuable. cryopreservation has effects on function, morphology and percentage of fertilization capacity of human sperm. also, it has been revealed that cryopreservation has a role in sperm dna fragmentation and infertility. in this study, viability, motility, dna fragmentation and for the first time, intracellular nitric oxide asses...

introduction: leukocytes causing a wide variety of side effects after transfusion are present in all blood products prepared by standard methods. as a consequence, the use of filter technology for leukoreduction has been widely practiced .according to aabb accreditation in 1996, leukoreduced blood components must contain less than 5×106 leukocytes per unit, but sometimes this value is higher ev...

multi drug resistance(mdr) is a major problem in the treatment of cancer and hemalological malignancies. this resistance is multi factorial and is the result of decreased intra cellular drug accumulation. this is partly due to the presence of a 170kd intra membranous protein termed p-glycoprotein(p-gp) that is an energy-dependent efflux pump which has increased expression on drug-resistance cel...

Comprehensive understanding of mechanisms of epigenetic regulation requires identification of molecules bound to genomic regions of interest in vivo. We have developed a novel method, insertional chromatin immunoprecipitatin (iChIP), to isolate specific genomic regions retaining in vivo molecular interaction in order to perform non-biased identification of interacting molecules. Here, we develo...

The authors report a case of subependymal giant cell astrocytoma associated with tuberous sclerosis in a 15-year-old boy. Computed tomographic scans showed a large intraventricular mass with peritumoral calcification and a cyst in the left lateral ventricle. Left dominant unilateral hydrocephalus was also revealed. Magnetic resonance images clearly demonstrated the lesion. The tumor was subtota...

objective(s): tuberculosis is one of the most important infectious diseases with high mortality rates worldwide, especially in developing countries. interleukin17 (il-17) is an important acquired immunity cytokine, which is mainly produced by cd4+th17 cells. it can recruit neutrophils and macrophages to the infected site in the lungs. il-23 is one of the most important inducers of il-17. in the...

introduction: cell transplantation is one of the main strategies for spinal cord injury repair. as oecs of the olfactory mucosa can be obtained by simple biopsy in all individuals without affecting their smell sensation, oecs considered as a promising candidate for autologous transplantation in the nervous system injury, especially for spinal cord repair. thereby in the current study oecs were ...

.

background: inappropriate activation or blockage of the inhibition of complement system could cause tissue damages in autoimmune diseases particularly rheumatoid arthritis (ra). defect in complement component regulation may cause damages to tissues, on the other hand, or the damaged tissue might affect the unnecessary activation of complement components.   objective: to investigate the expressi...