Background and objectives: Iran owns a rich and prestigious heritage of medicinal herbs but the majority of these plants have not yet undergone chemical, pharmacological and toxicological studies. In the present study some species form northern parts of Iran were evaluated for cytotoxicity. Methods: Sixteen medicinal plants were extracted with methanol and screened for their cytotoxic activitie...

Die Softwareentwicklung spielt inzwischen eine wichtige Rolle in vielen verschiedenen Industriezweigen – angefangen bei der Automobilindustrie über die Medizintechnik bis hin zur Automatisierungstechnik und zu vielen anderen Sparten. Die wachsende Komplexität der Systeme und folglich die ständig steigende Anzahl von Anforderungen an die Software führen zu höheren Ansprüchen an den Entwicklungsu...

Posttranscriptional regulation plays a very important role in animal oocytes and embryos. Maternally synthesized mRNAs and proteins control early animal development up until the maternal-to-zygotic transition (MZT). This is the point when the zygotic genome takes control. The maternally deposited mRNAs are posttranscriptionally regulated right from the time they are produced during oogenesis, t...

Studies from diverse organisms show that distinct interchromosomal interactions are associated with many developmental events. Despite recent advances in uncovering such phenomena, our understanding of how interchromosomal interactions are initiated and regulated is incomplete. During the maternal-to-zygotic transition (MZT) of Drosophila embryogenesis, stable interchromosomal contacts form bet...

0958 You might say that a mother’s infl uence begins even before her offspring were just a twinkle in dad’s eye. During egg cell development (called oogenesis), the mother deposits gene products—consisting largely of messenger RNAs (mRNAs) and some proteins—into the developing egg. These mRNAs take over after fertilization to orchestrate the earliest stages of embryogenesis. As the embryo devel...

background and objectives: iran owns a rich and prestigious heritage of medicinal herbs but the majority of these plants have not yet undergone chemical, pharmacological and toxicological studies. in the present study some species form northern parts of iran were evaluated for cytotoxicity. methods: sixteen medicinal plants were extracted with methanol and screened for their cytotoxic activitie...

in this study, the total 80% of meoh extract and also petroleum ether, chcl3, etoac, n-buoh, and the remaining meoh fractions obtained by solvent-solvent fractionation of the whole flowering samples of centaurea bruguierana (dc.) hand.-mzt. ssp. belangerana (dc.) bornm. (asteraceae), namely “baad-avard”, collected from borazjan in bushehr province (bushehr, iran) were investigated for larvicida...

To gain a better understanding of the molecular differences that may contribute to cleavage arrest and the poorer development associated with laboratory produced embryos, a series of experiments were conducted to quantitate the message levels of the cell cycle controller cdc25c, over the maternal to zygotic transition (MZT) in 4-cell in vivo- and in vitro-derived porcine embryos. The experiment...