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Maternal Fetal Transmission of Human Viruses and their Influence on Tumorigenesis
The human foetus is separated from the maternal blood by the syncytiotrophoblast induced by endogeneous human retrovirus-encoded proteins. This barrier is a highly developed one, which suppors apical-basolateral transport of maternal idiotype and anti-idiotype IgG, IgG-virus complexes. The selective maternal-fetal transport of epitope- and paratope-bearing entities can influence the developping fetal immune system during pregnancy. The bidirectional maternal-fetal transfer of cells are of even more importance during pregnancy. Maternal cells with latent viruses transport viruses without impairment of fetal development. Cells with premaligant and malignant genetic transformation are also transported to the fetus. Fetal and neonatal tumours are initiated by such cells in spite of the antitumour potential of fetal organism. On the contary, the fetal cells repair maternal tissue injouries and survive in the organisms of the recipients for decades. These possess new consequences for the neonatal immunity and organ transplatation surgery.
Science-Based Bioethics
This book has two primary aims, to analyze how advancing scientific discoveries uncover or elicit bioethical concerns and challenges and to provide the essential scientific background and bioethical information that allows scientists, healthcare professionals and clinical researchers to better comprehend, appreciate and address the complex bioethical dilemmas that our society confronts.
Cord Blood
In this book, the authors discuss cord blood banks and banking, the ethical issues involved and the risks and benefits. Topics include the virological risks and benefits of cord blood banking; mesenchymal stem cells and their role in regenerative medicine applications; osteogenic potential of human umbilical cord-derived mesenchymal stromal cells; public versus private cord blood banking; CCR5 deficient cord blood as a means of treatment for HIV-1 infection; and the therapeutic use of umbilical cord blood.
