Replacement blood vessels may be woven from bio-yarn

 

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Blood vessels made from the yarn should reportedly be tolerated by all patients

When a damaged blood vessel has to be replaced, it’s important that the replacement be well-tolerated by the body. And while bioprinted blood vessels are one possibility, French scientists are now working on weaving the things out of collagen yarn.

Led by researcher Nicolas L’Heureux, a team at the Inserm institute – aka the French National Institute of Health and Medical Research – started by lab-cultivating human cells, which in turn produced extracellular matrix deposits that were high in collagen. The extracellular matrix is the three-dimensional network of macromolecules that surrounds the body’s cells, helping to keep those cells structurally and biochemically supported.

Sheets of the lab-grown matrix deposits were next cut into very thin fiber-like strips, forming the yarn. It can be woven, knitted or braided, and has already been used to create vascular grafts (implantable tubes for redirecting the flow of blood). Those grafts exhibited “burst pressure, suture retention strength and transmural permeability that surpassed clinical requirements.”

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3D printing and microrobots make headway on building tissue which will enable large printed organs

artificial blood cells

Artificial blood vessels.

3D bioprinting has made new headway recently in fabricating blood vessels.  Researchers at Brigham and Women’s Hospital have developed a method for 3D printing biological material using magnetically controlled robots.

 

 

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Artificial blood vessels made on a 3D printer

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Tissue engineers create artificial blood vessels on a 3D printer.

Tissue engineers are building a handful of new body parts, from intestines to tracheas  — but progress on larger organs has been slow. This is mainly because tissues need nutrients to stay alive, and they need blood vessels to deliver those nutrients. It’s difficult to build those vascular networks, but now a team from Germany may have a solution: Print some capillaries with a 3-D printer.

 

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Feeling Cold? Try Chili Peppers To Boost Your Circulation

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Chili widens the arteries, producing a warming sensation

If the freezing temperatures are leaving you with painfully sore fingers and toes, some circulation-boosting herbs might be just what you need. Medically proven to enhance blood flow, they will help to keep warm blood pumping to where you need it that much longer.

 

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Women More Prone to Wrinkling than Men

Women more prone to wrinkling than men
A new study has confirmed that women wrinkle more easily than men.
The researchers have attributed women’s wrinkles woes to fewer sweat and sebaceous glands, fewer blood vessels, and a different muscle structure.
According to CBS News medical correspondent Dr. Jennifer Ashton, women are more likely to get wrinkles around the mouth and nose.
While talking on the CBS News ’ ‘The Early Show’, Ashton said as women age the muscles pull in closer to the mouth, and cause wrinkles.
She recommended women to avoid direct exposure to sun and quit smoking. She also insists to avoid going under the knife and evade drastic weight loss.
The study appears in Aesthetic Surgery Journal .
But there’s new hop for wrinkles.
Forget splashing thousands on anti-wrinkle creams or botox injections, for a group of researchers have developed a pillow that can iron out the ugly looking lines.
Boffins have developed a copper oxide pillow case, with tests showing those who used it for four weeks had fewer lines and wrinkles than those using conventional bedding. Clinical trials, supervised by a dermatologist, were carried out on 57 volunteers for four weeks, with the volunteers either given an anti-wrinkle pillow, which feels no different from normal fabric or a similar conventional pillow.
By the end of the trial, those sleeping on the copper pillows were statistically more likely to have lesser wrinkles. Jeffrey Gabbay, the owner of the Cupron company which used its expertise in making copper medical dressings to develop the pillow case, said, “The surgeon doing our wound-healing trial remarked how an increase in collagen was helping to heal wounds.”
“We wondered if it might work on fixing wrinkles and lines on the face. So we had some copper woven pillows made up and noticed that over a few days of lying on a cooper pillow lines on the face started to soften,” Telegraph quoted him, as saying. “It has been the most fantastic discover. The fabric has an impact on all lines but is best at ironing out the finer lines,” he added.
The researchers believe moisture from the skin releases copper ions from the pillow cases, which stimulate the production of collagen below the surface of the skin.

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Wrinkles are a constant concern for women

A new study has confirmed that women wrinkle more easily than men. The researchers have attributed women’s wrinkles woes to fewer sweat and sebaceous glands, fewer blood vessels, and a different muscle structure.  But there’s hope!

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Research Shows How Cancer Spreads To Brain

Research Shows How Cancer Spreads To Brain

Breast cancer cells (in green) grow only on blood vessels (red) in the brain of a mouse. 

Research has shown for the first time how cancers that spread to the brain establish themselves and begin to grow.

The Oxford University study, published in the journal PLoS One, has identified the mechanism that metastatic cancer cells use to anchor themselves to blood vessels in the brain. This could allow new drugs to be developed to stop cancers from spreading and growing in the brain.

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How Down Syndrome Protects Against Cancer

How Down Syndrome Protects Against Cancer

 Using customized stem cells, researchers showed that Down syndrome protects against cancer by preventing tumors from forming their own blood vessels. 

For decades scientists have known that people with Down syndrome, who have an extra copy of chromosome 21, get certain types of cancer at dramatically lower rates than normal. Now, partly by using stem cells derived from the skin of an individual with Down syndrome, researchers at Children’s Hospital Boston have pinpointed the gene that appears to underlie the cancer-protective effect.

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