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Human heart development slower than other mammals

Human heart development slower than other mammals | ALS Animals | Scoop.it

The walls of the human heart are a disorganized jumble of tissue until relatively late in pregnancy, despite having the shape of a fully functioning heart, according to a pioneering study.

 

Although scientists saw four clearly defined chambers in the fetal heart from the eighth week of pregnancy, they did not find organized muscle tissue until the 20th week -much later than expected.

 

Developing an accurate, computerized simulation of the fetal heart is critical to understanding normal heart development in the womb and, eventually, to opening new ways of detecting and dealing with some functional abnormalities early in pregnancy.

 

Studies of early heart development have previously been largely based on other mammals such as mice or pigs, adult hearts and dead human samples.

 

The research team, led by scientists at the University of Leeds is using scans of healthy fetuses in the womb, including one mother who volunteered to have detailed weekly ECG (electrocardiography) scans from 18 weeks until just before deliver. These functional data are incorporated into a 3D computerised model using information about the structure, shape and size of the different components of the heart from two types of MRI (Magnetic Resonance Imaging) scans of fetuses’ hearts.

 

Early results are already suggesting that the human heart may develop on a different timeline from other mammals. While the tissue in the walls of a pig heart develops a highly organized structure at a relatively early stage of a fetus’ development, a paper published in the Journal of the Royal Society Interface Focus reports that the there is little organisation of the human heart’s cells until 20 weeks into pregnancy.

 

A pig’s pregnancy lasts about three months and the organized structure of the walls of the heart emerge in the first month of pregnancy. The new study only detected similar organized structures well into the second trimester of the human pregnancy. Human fetuses have a regular heartbeat from about 22 days.

 


Via Dr. Stefan Gruenwald
Kaylee Lakes's insight:

This article says that pigs hearts are developed much fasted in pregnancy than humans, and that humans hearts are compared to pig hearts when they do test! 

 

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New study shows that people living near swine factory farms and crop fields fertilized with pig manure are more likely to pick up antibiotic-resistant staph infections | Avinash Kar's Blog | Switch...

Hot on the heels of the CDC’s new report about the “potentially catastrophic” antibiotic resistance crisis we face—which confirmed that both human and livestock uses of antibiotics are contributing to the public health crisis—comes a new study that...
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People that live close to pig farms or fields that are fertilized with pig manure are more likely to pick up infections such as MRSA. 

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Intestinal Diseases of Pigs and Cattle

Intestinal Diseases of Pigs and Cattle | ALS Animals | Scoop.it
Need for disease control increases w/ growth of livestock production systems @CFANS_Research #AgImpact http://t.co/Hqwflh4r6y
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Food borne illnesses is becoming more common and it is being said that it may be linked to pigs and cattle that are passing on illnesses through meat and more. 

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No Bio-Security at largest livestock market in SW England | Badger ...

No Bio-Security at largest livestock market in SW England | Badger ... | ALS Animals | Scoop.it
Our undercover investigator goes to have a look at a Sedgemore Livestock market on three occasions to inspect bio-security conditions. Nearly all of the guidelines/rules/regulations were broken. We read the Defra document ...
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The Sedgemore Livestock Market was almost breaking al of the guildlines, rules, and regulation when an undercover inspector went to have a look. The bio-sicurity clearly state the guildlines that they were breaking. 

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