objective: cutaneous leishmaniasis is an endemic infectious disease considered to be a crucial health problem in many countries, including iran. as such, there is a need for new medications with few side effects. in the present research we have studied the effect of artimisinin on  leishmania major (l. major) and cell death in vitro. methods: a specific number of promastigotes of l. major were ...

background & aim: effects of ultra violet spectrum on plants due to their obligatory requirement for sunlight for survival are unavoidable. direct effects of uv on plant growth and development are generally negative and usually they use many different defense mechanisms to acclimate and protect themselves. material & methods: the present research for the first time was conducted to inv...

in this work, we report high biological performance of silicon substituted nano hydroxyapatite (nha) prepared by immersion of calcium phosphate and sodium silicate as precursors in simulated body fluid (sbf) solution for 24, 36, 48 and 72 hrs at 37°c. characterization and chemical analysis of the synthesized powders were performed by fourier transform, infrared spectroscopy (ft-ir), x-ray powde...

statement of problem: bracket de-bonding during initial orthodontic archwire placement immediately after bracket set up or following re-bonding a single bracket can be a clinical concern. purpose: the aim of this in vitro study was to assess the effect of time on the shear bond strength of a no-mix orthodontic composite adhesive. materials and methods: seventy freshly extracted human upper firs...

background: cutaneous leishmaniasis is an important health problem caused by leishmania spp . as there is no vaccine, drug treatment is the only way to tackle leishmaniasis. in the present study, inhibitory and kill­ing effects of peganum harmala and alkana tinctoria extracts on amastigotes and promastigotes forms of leishmania were evaluated in-vitro. methods: the seeds of peganum harmala, ste...

background :subclinical hypothyroidism may adversely affect in vitro fertilization (ivf) outcomes. however the cutoff of thyroid-stimulating hormone (tsh) for diagnosis and treatment is controversal. the aim of this study was to find the association of clinical pregnancy rate with regard to tsh levels in women undergoing ivf.   methods: a historical cohort study of 816 infertile patients who un...

background: this study was designed to detect whether there is a correlation between in vitro susceptibility of field isolates of leishmania major and the clinical outcomes of meglumine antimoniate (glucantime®) therapy, the main­stay of cutaneous leishmaniasis treatment in iran. methods: forty-three patients infected with l. major were enrolled in this study from october 2009 to march 2010 and...

two separate factorial experiments were conducted to study the effects of explant sources, plant growth regulators, sucrose concentrations, and light conditions on in vitro cormlet formation of freesia (freesia ×hybrida bailey 'argenta'). interestingly, it was observed that the pupae had lower contamination levels compared to mother corms. using 40% sodium hypochlorite solution for 40...

background: in vitro maturation (ivm) of oocytes is a promising technique to reduce the costs and avert the side-effects of gonadotropin stimulation for in vitro fertilization (ivf). the pregnancy rates from oocytes matured in vitro are much lower than those of in vivo stimulation cycles, indicating that optimization of ivm remains a challenge. objective: in this study, we investigated the effe...

background: repeated implantation failure (rif) is defined as pregnancy failure after two to six times with at least ten high grade embryo transfer to uterus. a variety of causes have been anticipated for rif, including anatomical, autoimmune, genetics, endocrine and thrombotic anomalies. factors responsible for rif have important implication regarding treatment however in many couples a perfec...