Placenta
hideThe placenta is an organ unique to mammals that connects the developing fetus to the uterine wall. The placenta supplies the fetus with oxygen and food, and allows fetal waste to be disposed of via the maternal kidneys. The word placenta comes from the Latin for cake, from Greek plakóenta/plakoúnta, accusative of plakóeis/plakoús - πλακόεις, πλακούς, "flat, slab-like", referring to its round, flat appearance in humans. Protherial (egg-laying) and metatherial (marsupial) mammals produce a choriovitelline placenta that, while connected to the uterine wall, provides nutrients mainly derived from the egg sac. The placenta develops from the same sperm and egg cells that form the fetus, and functions as a fetomaternal organ with two components, the fetal part (Chorion frondosum), and the maternal part (Decidua basalis).
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News tagged with placenta
Nanoparticles may cause DNA damage across a cellular barrier
Nanotechnology / Bio & Medicine
Nov 05, 2009 |
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(PhysOrg.com) -- Scientists have shown in the laboratory that metal nanoparticles damaged the DNA in cells on the other side of a cellular barrier. The research, by the University of Bristol, is published ...
Placental precursor stem cells require testosterone-free environment to survive
Oct 29, 2009 |
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Trophoblast stem cells (TSCs), cells found in the layer of peripheral embryonic stem cells from which the placenta is formed, are thought to exhibit "immune privilege" that aids cell survivability and is potentially beneficial ...
Boys with urogenital birth defects are 33 percent more common in villages sprayed with DDT
Oct 23, 2009 |
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Women who lived in villages sprayed with DDT to reduce malaria gave birth to 33 per cent more baby boys with urogenital birth defects (UGBD) between 2004 and 2006 than women in unsprayed villages, according to research published ...
Spontaneous and medically induced preterm births contribute equally to the rising rate of preterm births
Sep 22, 2009 |
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Research published this week in the open access journal PLoS Medicine shows that the rising rate of preterm birth in Scotland is as much a result of an increase in spontaneous preterm birth as it is of preterm birth that i ...
Scientists discover key factor in regulating placenta and fetal growth
Sep 21, 2009 |
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UK scientists have shown that a common biological protein molecule called SHP-2 is crucial for encouraging placenta growth. The research is published today in Endocrinology.
Moms-to-be warned over use of fetal heart rate monitors
Aug 20, 2009 |
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Mums-to-be are being advised not to use personal monitors (Doppler devices) to listen to their baby's heartbeat at home over fears that they may lead to delays in seeking help for reduced fetal movements.
Scientists develop 'gas gauge' to prevent pregnancy loss
Aug 03, 2009 |
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To combat the many fetal deaths that occur annually because the placenta is too small, researchers at Yale School of Medicine have developed a method to measure the volume of the placenta, which provides nourishment to the ...
Assisted reproductive techniques alter the expression of genes that are important for metabolism
Jul 27, 2009 |
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Research to be presented at the Annual Meeting of the Society for the Study of Ingestive Behavior (SSIB), the foremost society for research into all aspects of eating and drinking behavior, finds that assisted reproductive ...
Placenta-derived stem cells may help sufferers of lung diseases
Jul 27, 2009 |
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An Italian research team, publishing in the current issue of Cell Transplantation (18:4), has found that stem cells derived from human placenta may ultimately play a role in the treatment of lung diseases, such as pulmon ...
Scientists discover new source for harvesting stem cells
Jun 23, 2009 |
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A groundbreaking study conducted by Children's Hospital & Research Center Oakland is the first to reveal a new avenue for harvesting stem cells from a woman's placenta, or more specifically the discarded placentas ...
Hospital finds hope in umbilical cords
Jun 04, 2009 |
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When Jennifer Garcia scheduled the birth of her daughter at South Miami Hospital, nurses asked her an unusual question: "After your baby is born, are you willing to donate the umbilical cord to save someone's life?"
Balancing hormones may help prevent preterm births
Apr 01, 2009 |
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The relationship between two different types of estrogen and a hormone produced in the placenta may serve as the mechanism for signaling labor, according to a new study accepted for publication in The Endocrine Society's ...
Hundreds of Natural-Selection Studies Could be Wrong, Study Demonstrates
Mar 30, 2009 |
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(PhysOrg.com) -- Scientists at Penn State and the National Institute of Genetics in Japan have demonstrated that several statistical methods commonly used by biologists to detect natural selection at the molecular ...
Genome sequencing of fungus with biotechnological applications
Feb 27, 2009 |
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Researchers Antonio G. Pisabarro (Professor of Microbiology) as well as José Luis Lavín and José Antonio Oguiza, from the Genetic and Microbiology Group at the Public University of Navarre, have taken ...
Placenta removal -- a safer method after Caesareans
Jul 16, 2008 |
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In Caesarean deliveries the placenta is usually removed by hand or by a technique known as 'cord traction'. A recent systematic review by Cochrane Researchers shows that cord traction poses less risk to the mother than manual ...
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