Detection of small blood vessels in the bones

German scientists have discovered a whole new anatomical structure, namely the presence of microscopic blood vessels that circulate in our bones and that were previously unknown to anatomists.

This discovery took place after a team from the Institute for Immunology and Experimental Planning at the University of Duisburg and Essen (Germany) examined the mouse bones with precision and made them completely transparent by "cleaning" their pigments with ethyl cinnamate, until these microscopic structures appear as secret corridors of the circulatory system. With a fast and effective immune response throughout the body.

These "trans-cortical vessels" described by the researchers of the journal Nature Metabolism, in particular, explain the effectiveness of intraosseous injections when access to the veins is very difficult, said the website in French. Cyans Efter.

Researchers say that the injection of medical liquid directly into the bone marrow, through the hard shell of the bone, has the same effectiveness that intravenous injection is more effective than the current one. Muscle injection, noting that the bone of the mouse leg contains more than a thousand of these small capillaries, and that 80% arterial blood and 59% of the venous blood pass through these back doors.

The head of the research team, Matthias Gunzer, tried to prove that these small tunnels were also provided to the man, thus opening a new way to better understand how the blood circulates in the body and therefore susceptible to provide humans with new screening mechanisms.

Despite accumulated evidence of complex bone blood supply, the anatomy and molecular mechanisms behind these fast-moving cells and bone marrow fluids to blood have been difficult to detect.

"I had never seen such blood vessels before," says Ralph Mueller of the Swiss Federal Institute of Technology in Zurich.

"This study found that there are small channels directly connecting the bone marrow of the skull to the cerebral lining, which is a quick way to connect immune cells to the brain in case of inflammation or injury. It is therefore likely that all our bones serve as shortcuts to the bloodstream if necessary.