For several decades, people have wondered why pregnant mothers do not reject fetuses bearing allogeneic paternal antigens. Several hypotheses have been proposed, including a physical barrier between fetus and mother, immaturity of fetal antigens and temporary dormancy of the maternal immune system. Based on the "cell death immune recognition model," the author proposes a hypothesis that pregnan...

Objective:The study was carry out in order to evaluate the validity and reliability of Paternal-Antenatal Attachment Questionnaire.
 Method: Research made with 155 expectant fathers who attended routine pregnancy controls their partners a obstetric gynecology clinic Izmir, were literate, aged 18 or older without any health risk fetus. Data collected by information form Questionnaire develo...

BACKGROUND The H19/Igf2 imprinting control region (ICR) functions as an insulator exclusively in the unmethylated maternal allele, where enhancer-blocking by CTCF protein prevents the interaction between the Igf2 promoter and the distant enhancers. DNA methylation inhibits CTCF binding in the paternal ICR allele. Two copies of the chicken β-globin insulator (ChβGI)(2) are capable of substitutin...

In meiosis, a single round of DNA replication is followed by two consecutive rounds of chromosome segregation, called meiosis I and II. Disjunction of maternal from paternal centromeres during meiosis I depends on the attachment of sister kinetochores to microtubules emanating from the same pole. In budding yeast, monopolar attachment requires recruitment to kinetochores of the monopolin comple...

Meat pig breeds used commercially in North America lose significant numbers of genetically-normal fetuses in the peri-implantation (attachment) period and at mid-gestation (day 50 of the 114 day gestation interval). Fetal demand that is in excess to the placental blood supply is thought to underlie these waves of fetal loss. In many species, the endometrium of early normal pregnancy is enriched...

Natural selection modified the attachment-behavioral system to bond adult mating partners in early members of the genus Homo, thus facilitating increased investment, especially paternal investment, in offspring. Previously existing adaptations that fostered intersexual conflict (e.g., ovulatory adaptations) could have threatened attachment bonds; therefore, the attachment-behavioral system migh...

BACKGROUND In Norway almost all pregnant women attend one routine ultrasound examination. Detection of fetal structural anomalies triggers psychological stress responses in the women affected. Despite the frequent use of ultrasound examination in pregnancy, little attention has been devoted to the psychological response of the expectant father following the detection of fetal anomalies. This is...

Prior research finds that children with incarcerated parents are at a higher risk of delinquency and various forms of antisocial behavior. Yet there are reasons to question whether this association is in fact causal, and research that empirically pins down mechanisms that account for any observed association is in high demand. The present research examines the association between father's incar...

Horta et al. elegantly demonstrated that maternal, but not paternal, birthweight and weight gain in early childhood may be directly associated with next-generation birthweight. However, the relative contributions of early and adult body weight (i.e. at the time of conception or during pregnancy) may have been overlooked. It is not clear whether the associations were still observed once adult ma...