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Meet the newest element deemed critical for animal life: bromine

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June 6, 2014

Bromine joins the other elements marked on this periodic table, as those critical for anim...

Bromine joins the other elements marked on this periodic table, as those critical for animal life

Joining the ranks of carbon, selenium, sulfur and 24 others as an essential element for animal life is element 35 – bromine – long considered inessential to life and moreso, shunned as a toxic disease-causing agent. However, researchers have identified the role bromine holds in animal development, even demonstrating death in fruit flies without access to this element named for its identifying stench.

The research conducted at Vanderbilt University builds upon a partial understanding of how collagen develops into scaffolding for cell tissue. Bromide, the ionic form of bromine, was identified as the trace element required to enable an enzyme to link bonds among collagen molecules.

Fruit flies on bromine-deficient diets not only started dying, but researchers also observed that the linked cell tissue scaffolding, technically basement membranes, were “shoddy” and “torn apart” in the intestines. When once again given bromine, the fruit flies recovered.

When the researchers compared these flies to a strain created without the gene responsible for linking collagen molecules, they discovered the same symptoms, cementing the possibility that bromine had an important role in this biological process which exists at every level of the animal kingdom.

It’s likely that you’re not familiar with bromine too much as an edible substance, and with good reason. It has a long half-life in the human body, and there has been a medical backlash against food substances doped with extra bromine (brominated vegetable oil, for example, and the decades-ago switch to using it in flour as a bread oxidizer). It’s implicated in thyroid conditions because it competes with iodine. As a trace element you’re probably getting enough of it, but naturally it exists in seaweed, fish, and nuts.

However, discovering bromine’s role is important to a couple of populations that are medically at-risk. Patients on dialysis and those using total parenteral nutrition (a nutrition source that replaces food by conveying liquid nutrition direct to the bloodstream) have been shown to be deficient in bromine.

Fully enumerating the list of elements critical to human development is also important as we turn our eyes to sources of nutrition in space, or just alternate sources of food on Earth, as with the meal replacement Soylent.

The research was originally published in the journal Cell.

Team coordinator Billy Hudson, PhD and others discuss the research in the video below.

Source: Vanderbilt University

About the Author
Heidi Hoopes Heidi measures her life with the motley things she's done in the name of scientific exploration. While formally educated in biology and chemistry, informally she learns from adventures and hobbies with her family. Her simple pleasures in life are finding turtles while jogging and obsessively winnowing through her genetic data.   All articles by Heidi Hoopes
2 Comments

Wow....is it official in our chemistry element chart now ?

Zilong Han
8th June, 2014 @ 07:13 pm PDT

This Bromine discovery proves again that the science is never settled.

Anyone who says the science is settled about anything has a political and/or financial agenda, not a science agenda.

robo
9th June, 2014 @ 08:53 am PDT
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