News tagged with capillaries

Helping kids with severe respiratory failure survive until lung transplantation

Adults with end-stage respiratory failure and pulmonary hypertension requiring ECMO (extracorporeal membrane oxygenation) have been "bridged" toward lung transplantation with novel lung assist devices such as the Novalung. ...

Surgery created May 06, 2013 | popularity not rated yet | comments 0

Making a window for drug delivery in the blood-brain barrier

(Medical Xpress)—The blood-brain barrier (BBB) prevents most large or hydrophilic (polar) molecules from getting into the brain. For many neurological diseases, like Parkinson's, the presence of the BBB ...

Medical research created Apr 30, 2013 | popularity 5 / 5 (2) | comments 0 | with audio podcast report

People who participate in sports have better attention span than those in poor physical health, study finds

New scientific evidence seems to confirm the famous Roman saying "Mens sana in corpore sano". Researchers from the University of Granada have demonstrated that people who normally practice sport have a better ...

Health created Apr 10, 2013 | popularity 5 / 5 (3) | comments 0

Flies model a potential sweet treatment for Parkinson's disease

Researchers from Tel Aviv University describe experiments that could lead to a new approach for treating Parkinson's disease (PD) using a common sweetener, mannitol. This research is presented today at the Genetics Society ...

Genetics created Apr 06, 2013 | popularity 5 / 5 (3) | comments 0

Radiosurgery for treating unruptured intracranial arteriovenous malformations

Researchers at the University of Virginia (UVA) Health System recommend radiosurgery for treating unruptured arteriovenous malformations (AVMs), because the procedure has a reasonable benefit-to-risk profile. They base this ...

Surgery created Mar 26, 2013 | popularity not rated yet | comments 0

New technology measures oxygen in individual red blood cells in real time

In an engineering breakthrough, a Washington University in St. Louis biomedical researcher has discovered a way to use light and color to measure oxygen in individual red blood cells in real time.

Medical research created Mar 25, 2013 | popularity 4 / 5 (1) | comments 0 | with audio podcast

British team perform new 'warm' liver transplants

British surgeons said Friday they have performed successful liver transplants on two patients using a revolutionary technique which keeps the organ warm and functioning while outside the body.

Surgery created Mar 15, 2013 | popularity not rated yet | comments 0

Novel marker helps identify preeclampsia risk in pregnancy

Pregnant women who have a reduced number of capillaries under their skin during pregnancy may be at heightened risk for preeclampsia, according to research being presented at the American College of Cardiology's 62nd Annual ...

Cardiology created Mar 07, 2013 | popularity not rated yet | comments 0

Drugs targeting blood vessels may be candidates for treating Alzheimer's

(Medical Xpress)—University of British Columbia researchers have successfully normalized the production of blood vessels in the brain of mice with Alzheimer's disease (AD) by immunizing them with amyloid beta, a protein ...

Alzheimer's disease & dementia created Mar 07, 2013 | popularity 5 / 5 (1) | comments 0 | with audio podcast

Researchers show how blood vessels regroup after stroke

Rice scientists simulate "robot" cells to study the development of microvascular systems in the brain. The goal is to find a way to direct the development of vessels that feed oxygen-starved cells in stroke ...

Medical research created Feb 11, 2013 | popularity 5 / 5 (3) | comments 0 | with audio podcast

Tumor blood vessels prevent the spread of cancer cells

A lack of the protein endoglin in the blood vessels of tumour-bearing mice enables the spread of daughter tumours, according to researchers at Karolinska Institutet and Lund University in Sweden in a study published in the ...

Cancer created Feb 11, 2013 | popularity not rated yet | comments 0

Intestinal immune cells play an unexpected role in immune surveillance of the bloodstream

A type of immune cell found in the small intestine plays a previously unsuspected role in monitoring antigens circulating in the bloodstream. The findings from a team of Massachusetts General Hospital (MGH) researchers clarify ...

Immunology created Dec 13, 2012 | popularity 5 / 5 (1) | comments 0 | with audio podcast

Researchers develop neuroimaging technique capturing cocaine's devastating effect on brain blood flow

(Medical Xpress)—Researchers from the Department of Biomedical Engineering at Stony Brook University have developed a high-resolution, 3D optical Doppler imaging tomography technique that captures the effects ...

Psychology & Psychiatry created Oct 10, 2012 | popularity not rated yet | comments 0 | with audio podcast

Dual effect on tumor blood vessels

Angiogenesis is considered to be a major target of new cancer treatments. Angiopoietin-2 (Ang-2) is one of the key regulators of angiogenesis. Scientists of the German Cancer Research Center and Medical Faculty Mannheim, ...

Cancer created May 31, 2012 | popularity not rated yet | comments 0 | with audio podcast

The role of inflammation on atherosclerosis

(Medical Xpress) -- European scientists dig into atherosclerotic plaque formation processes to investigate the part played by inflammation and vascular wall remodelling.

Medical research created May 01, 2012 | popularity 5 / 5 (2) | comments 0

Capillary

Capillaries ( /ˈkæpɨlɛri/) are the smallest of a body's blood vessels and are parts of the microcirculation. They are only 1 cell thick. These microvessels, measuring 5-10 μm in diameter, connect arterioles and venules, and enable the exchange of water, oxygen, carbon dioxide, and many other nutrient and waste chemical substances between blood and surrounding tissues. During embryological development, new capillaries are formed by vasculogenesis, the process of blood vessel formation occurring by a de novo production of endothelial cells and their formation into vascular tubes. The term angiogenesis denotes the formation of new capillaries from pre-existing blood vessels.

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