Objective Few studies have been conducted on the infertility problems in Iran. This study aimed to investigate the prevalence of infertility problems and related factors in Iranian infertile patients. MaterialsAndMethods In this cross sectional study, 405 infertile patients referred to Royan Institute, Tehran, Iran, between 2014 and 2015, were selected by simple random sampling. Participants co...

Shortage of transplantable organs available for people with endstage diseases has become goal of scientific project worldwide to find new approaches for providing the needed organs. These projects have mainly focused on complementation of pig embryo genetically manipulated or designed to produce an organ deficient embryo. Considering the fact that pig is not the common domestic animal in Middle...

Background To compare a flexible, multi-dose GnRH antagonist protocol with a long GnRH .agonist protocol in poor respo MaterialsAndMethods A randomized clinical trial of 70 poor responder patients (35 patients in GnRH antagonist protocol and 35 patients in long GnRH agonist protocol) was performed at Royan Institute, Tehran, Iran. Both groups were given a fixed dose of human menopausal gonadotr...

Background: This paper considers whether the development of oocyte freezing raises any new or distinctive ethical issues. It will examine the ethical issues raised by this technique: the ’social’ use of egg freezing and how that might be defined; the use of egg freezing for cancer patients; and limitations and benefits of the technique. Materials and Methods: A consideration of the literature a...

background: assisted reproductive techniques (art) are used with increasing frequency worldwide. the present research was conducted to determine the effects of art on hearing defects and ear abnormalities. materials and methods: n a descriptive, cross-sectional, non-randomized study, the status of hearing and ear abnormalities was assessed in 300 newborns conceived by art at royan institute, te...

objective: to determine the pattern of breastfeeding in infants who conceived by assisted reproductive techniques (art). materials and methods: in a cross-sectional study, 312 infants were selected by the non-random consecutive method from art infants who referred by royan institute to child health research department. infants were born between septembers 2007and september 2009 in tehran. infan...

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  Stem cells are naïve or master cells. This means they can transform into special 200 cell types as needed by body, and each of these cells has just one function. Stem cells are found in many parts of the human body, although some sources have richer concentrations than others. Some excellent sources of stem cells, such as bone marrow, peripheral blood, cord blood, other tissue stem cells and ...

a:4:{s:10:"Background";s:2314:"The research made on stem cells through the last decade and following that the great achievements made applying stem cells in treating vast number of diseases have turned the issue of Cord Blood collecting and saving (cryopreserving) to a critical one. A prompt demand and access to stem cells and applying them in treating a wide range of terminal diseases have led...

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