Iranian crack is a new form of narcotic substance that has found widespread prevalence inIran in the past years. crack only nominally resembles crack cocaine as it is widely different inits clinical signs. Thus the present study aims to quantify the chemical combination of this drug.The samples included 18 specimen of crack collected from different zones of Tehran, Iran.All specimens were in th...

In an effort to engineer capillary-like networks in vitro, different cultivation methods were compared. Five small-diameter tube-like constructs ('vessel equivalents') were fabricated from porcine gelatin scaffolds and seeded with human adipose tissue stromal cells and umbilical vein endothelial cells. After initial growth, the vessel equivalents were divided. One segment was exposed to pulsati...

infections of the cerebrospinal shunts and other neurosurgical structures are not uncommon in the clinical practice. these infections are mostly clinical emergencies carrying negative prognostic impacts on the patients as well as spending healthcare resources. the low pathogenicity nature of some implicated pathogens results in minimal physical signs that may complicate the diagnosis and mislea...

BACKGROUND Ectopic tissue has been observed frequently in human root canal specimens when cell homing studies were performed at the dorsum of rodents. In contrast, pulp-like tissue formed when immature teeth were implanted on top of the rat calvaria. It was surmised, yet not tested, that the implantation site might affect tissue ingrowth. METHODS Four root sections from human immature molars ...

an amplification polymerase chain reaction (pcr) test for the direct detection of chlamydia trachomatis in urethral and endocervical swab specimens from symptomatic and asymptomatic women and men were compared to standard culture technique. during 6 months, 300 endocervical swab specimens from 205 asymptomatic women (64.4%) and 95 symptomatic women (31.6%), and 187 urethral swab specimens from ...

cytomegalovirus is the most important pathogen affecting transplant recipients and causing significant morbidity and morbidity. the prevalence of cmv  infections in transplant recipient varies from country to country.  the aim of this study was to determine the prognostic value of pcr assay for cmv  detection in patients before keratoplasty.  a total of 23 patient samples enrolled in this study...

conclusions candida strains isolated from newborns, elderly patients, and intensive care patients, identified and isolates from blood cultures, should be studied for antifungal susceptibility for management of the treatment. our university hospital is a recently opened center and these are the first data of our center. gradually, as the number of patients increases, this data will be evaluated ...

conclusions the prevalence of esbl-producing klebsiella strains in shahid-beheshti hospital in kashan has increased. the study concluded that there was a high prevalence of the blactx-m type gene among esbl positive isolates. patients and methods one hundred klebsiella spp. were isolated from clinical specimens of hospitalized patients at shahid-beheshti hospital from december 2012 to november ...

Block copolymers built on a dendritic block having fixed molecular weight but different number of peripheral PEG chains were synthesised. At a fixed block ratio, these block copolymers exhibited topological transition of cylindrical micelles depending on the number of PEG chains.