background: implantation failure of blastocyst is one of the main reasons of failure to become pregnancy following use of assisted reproductive techniques. hla-g, one of the non-classic hla subtypes, seems to have a vital role in neutralizing of mother immune system. according to importance of ins/del polymorphism of hla-g in regulation of hla-g expression, it seems that this polymorphism has a...

The aim of the Postponing Parenthood project was to investigate several aspects of the delaying of childbearing phenomenon in Sweden and Norway, such as medical risks and parental experiences. Data were retrieved from the Swedish and Norwegian Medical Birth Registers and three different cohorts: the Swedish Young Adult Panel Study, the Norwegian Mother and Child Cohort, and the Swedish Women's ...

objective: nowadays, many infertile couples can have child by assistant reproductive technology (art). always the undesirable effects of these methods on newborn are considered and are evaluated. the aim of this study is to describe the impact of art on ocular and visual performances of infants born by these methods. materials and methods: in a cross-sectional descriptive study, 479 infants age...

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...

Heterotopic pregnancy (HP) is the simultaneous occurrence of intra- and extrauterine pregnancies. It is a rare event in spontaneous pregnancies with an incidence of less than 1:15000 however the frequency has increased to 1% in accordance with the widespread use of assisted reproductive techniques (ART). The pre-operative diagnosis of this condition is generally difficult and it would be life t...

Twins and higher–order multiple pregnancies account for approximately 3% of all gestations in the United States (Ananth et al, 2004) and seem to be stabilized since 2006 after a dramatically increase since the beginning of the 1970s (Vayssière et al, 2011). There are two main causes for the change in the rate of multiple pregnancies: advanced maternal age and use of assisted reproductive techni...

Background: Infertility is a complicated and psychologically threatening and challenging crisis. The rapid development of ART has raised many ethical and legal issues and lead to various emotional changes (anxiety, depression, stress, aggressiveness, etc.) as it may involve considerable time, expense, and loss of privacy. It can be both dangerous and expensive to enter the world of assisted rep...

Mammalian ovaries consist of follicles as basic functional units. The total number of ovarian follicles is determined early in life, and the depletion of this pool leads to reproductive senescence. Each follicle develops to either ovulate or, more likely, to undergo degeneration. The dynamics of ovarian follicle development have interested endocrinologists and developmental biologists for many ...

BACKGROUND It has been suggested that couples who conceive with assisted reproductive technologies (ART) invest more in their child than those who conceive spontaneously. This study examined how parental investment in the child (PIC) varied as a function of method-of-conception, gender and other contextual variables, i.e. prenatal depression, social support and satisfaction with the marital rel...