sábado, 16 de dezembro de 2023

Needle-free Ultrasound Vaccine. From Oxford, a Shocking Invention Aims for mDNA Delivery

 

 

Fourth World
December 16th

Touted as a way around the phobia of needles and vaccinations, a new application of ultrasound is now being promoted as a different way of inoculating patients.This innovation was showcased during the Acoustics 2023 event held in Sydney, Australia, co-hosted by The Acoustical Society of America (ASA) and the Australian Acoustical Society, on December 4th to the 8th. 

The application of ultrasound to human cells facilitates a transient permeabilisation of cell membranes, and allows for greater drug delivery. The method under discussion is referred to as biocavitation. In fluid mechanics cavitation results from pressure variations in a liquid, leading to large numbers of small cavities to form and then implode. These cavities then fill with liquid vapor and the gases are present in the liquid. Cavitation nuclei can be formed spontaneously in tissue with very low surface tension.Given the relatively low surface tension of cell membranes, it is thought that newly created gas bodies are created there during ultrasonic activation. Experimental studies have shown that ultrasound energy "can induce a wide variety of non-thermal effects ranging from hemorrhage and necrosis", and ultrasound's potential as a weapon has not gone unnoticed by the militaries of the world. But the use proposed here is clearly an acknowledgement of the low success rate and poor viability of cells treated with the conventional mRNA transfection methods.

Nothing better illustrates the lack of insight into the inherent foolishness of violently forcing cellular and/or genetic modifications than this. It is yet another sign that the lessons of the past 3 years have gone completely over the heads of the mainstream scientific community. Science.org reports:

 

No more needles? Vaccinating with the power of sound

 Does the sight of a syringe make your heart pound or cause you to break out in a cold sweat? If so, you’re not alone—a quarter of adults and two-thirds of children are afraid of needles, which poses a problem for doctors trying to administer vaccines that are necessary to maintain public health. But as far as phobias go, a fear of needles isn’t all that unreasonable. Although vaccines are more effective than ever, the most prominent method of administering them remains somewhat primitive. Getting jabbed hurts, can expose you to blood-borne pathogens, and is a source of dangerous medical waste.

With all those risk factors in mind, it’s no wonder that scientists are eager to develop methods of vaccine delivery that don't rely on needles. Some promising alternatives include nasal sprays, electric shocks, and even air-powered “guns” that shoot vaccines through the skin . Now, a team of researchers at the University of Oxford is harnessing the power of ultrasound to deliver vaccines in a manner that is safe, painless, effective, and—most importantly—completely needle-free.

The new technique, which was presented earlier this month at an event co-hosted by the Acoustical Society of America and the Australian Acoustic Society, relies on a phenomenon known as “cavitation” in which sound waves traveling through liquid cause many small bubbles to form and then immediately implode. The researchers are attempting to use the energy produced by those popping bubbles to push past the outer layers of dead skin cells and thrust vaccine molecules straight through the membranes of the living cells below.

When the approach was tested in mice, it delivered about 700 times fewer drug particles than a conventional intramuscular injection. But because ultrasonic drug delivery targets the skin, which is richer in immune cells than muscle, it also caused the animals to produce more antibodies. So, in addition to causing fewer side effects, ultrasound-based vaccine delivery may be more efficient and effective—provoking stronger immune responses with less medicine, and ultimately providing better protection against disease.

The cavitation approach could prove especially helpful for DNA vaccines, which are safer and more potent than other types of vaccines but are difficult to deliver because they have to gain access to cell nuclei in order to work correctly. Focused sound waves could break open the protective membrane that surrounds a cell’s nucleus, allowing vaccine molecules to move in and get to work.

Of course, this needle-free technique carries its own risks. Excessive exposure to cavitation can cause damage to neighboring cells, but the team says this damage can be avoided if the sound waves are precisely targeted. Also, as lead researcher Darcy Dunn-Lawless points out, no method of vaccine delivery will ever be entirely danger-free. “The main potential side effect is universal to all physical techniques in medicine,” he explains in a press release. “If you apply too much energy to the body, you can damage tissue.”

Unlike needle-based vaccine delivery, ultrasound also carries no risk of cross-infection and doesn’t produce hazardous waste. And perhaps most importantly, while a huge number of people are terrified of needles, there really isn’t anything scary about sound waves you can’t even hear.

 

DNA Vaccine, Injected by Ultrasound — No Needles!  

Source: https://www.science.org/content/article/scienceadviser-vaccinating-power-sound

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