Navigation Links
Gestational Period Depends on Structure of Placenta: Research
Date:11/17/2010

WEDNESDAY, Nov. 17 (HealthDay News) -- The structure of the placenta influences the relatively long nine-month pregnancy in humans, researchers say.

In their study, the investigators found that babies grow twice as fast in the wombs of some mammals compared to others and that the difference in growth rate is due to the structure of the placenta and the way it connects the mother and baby.

The more intimate the connection between the mother and the fetus, the faster the baby grows and the shorter the pregnancy, said the researchers at Durham and Reading universities in England.

Human placentas do not form the complex web-like structure seen in animals such as dogs and leopards, which helps explain why humans have longer pregnancies, the study authors explained.

The researchers looked at 109 mammal species and found that the placenta in some species is "highly folded," resulting in a larger surface area that increases the rate at which nutrients are passed from the mother to the baby.

"This study shows that it is not necessarily the contact with maternal blood which determines speed of growth, but the extent to which the tissues of mother and baby are 'interlocked,' or folded, with one another," lead author Dr. Isabella Capellini said in a Durham University news release.

"In humans, the placenta has simple finger-like branches with a relatively limited connection between the mother's tissues and those of the fetus, whereas in leopards, for example, it forms a complex web of interconnections that create a larger surface area for the exchange of nutrients," she explained.

The study findings are published in the current issue of the journal American Naturalist.

More information

The U.S. National Library of Medicine outlines fetal development.

-- Robert Preidt

SOURCE: Durham University, news release, Nov. 16, 2010


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Can Wii help control gestational diabetes?
2. Metabolic status before pregnancy predicts subsequent gestational diabetes
3. Women with gestational diabetes have increased risk of recurrence in subsequent pregnancies
4. Gestational Diabetes Linked to Serotonin and Dietary Protein
5. Twice as Many Women May Soon Be Diagnosed With Gestational Diabetes
6. Pregnancy Weight Gain, Especially in 1st Trimester, May Increase a Womans Risk of Gestational Diabetes
7. Excessive Weight Gain During Pregnancy Raises Gestational Diabetes Risk
8. Successful periodontal therapy may reduce the risk of preterm birth, according to Penn dental study
9. Researchers study relationship of oral cancers and periodontal disease
10. Centage Corporation Reports 51% Growth in Revenue for Q1 over Same Period as Last Year
11. New Period of Brain ‘Plasticity' Created with Transplanted Embryonic Cells
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Gestational Period Depends on Structure of Placenta: Research
(Date:4/28/2016)... (PRWEB) , ... April 28, ... ... Standards Consortium (CDISC) announces today the open availability of a new CDISC ... and catalogs for registering clinical trials. This innovative standard will make it ...
(Date:4/28/2016)... ... April 28, 2016 , ... In many parts of ... determinant of childhood mortality. This is particularly true in underdeveloped parts of Africa where ... University of New England’s campus in Tangier, Morocco, will examine this global health issue ...
(Date:4/28/2016)... ... April 28, 2016 , ... One way to ignore solid evidence is to ... But we toss the baby out with the bathwater when we ignore all studies ... higher-quality studies and otherwise making better use of education policy research. , “When readers ...
(Date:4/28/2016)... ... April 28, 2016 , ... ... of miniature microphones and headsets announced today that the US Patent Office has ... in-earphones into a structure. This innovative design creates a lightweight and modular audio ...
(Date:4/28/2016)... ... April 28, 2016 , ... SyncDog, Inc. , ... leading secure mobility workstation suite, SentinelSecure™, at MobileIron’s 6th annual Mobile First Conference ... will be MobileIron’s 6th Mobile First Conference and will feature immersive training, collaboration, ...
Breaking Medicine News(10 mins):
(Date:4/28/2016)... , April 28, 2016 ... H1 2016" is a report that provides an ... strengthen R&D pipelines by identifying new targets and ... Company Profiles discussed in this H1 2016 ... Riunite Srl, AbbVie Inc., Abiogen Pharma S.p.A., Ablynx ...
(Date:4/27/2016)... , April 27, 2016 ... accelerator (MR-linac) platform will be the focal point of ... of the European Society for Radiotherapy & Oncology, taking ... MR-linac integrates a state-of-the-art radiotherapy system and a high-field ... to clearly see the patient,s anatomy in real time. ...
(Date:4/27/2016)... Massachusetts , April 27, 2016 ... that Jeff Poulton , Chief Financial Officer, will present ... Boston, MA on Wednesday, May 04, ... audio webcast will be available on the Presentations and Webcasts ... a replay of the webcast will be available on this ...
Breaking Medicine Technology: