nanoscale engineering nanomedicine. 18/25. Global health as a "great challenge"
Tuesday, March 6, 2007
Spray Tan After Getting Legs Waxed
Nanotechnology has already changed the way to make some drugs and in some cases, rewritten. When a pharmaceutical compound is formulated as a nanoparticle, increasing their level of bioavailability. In other words, the body can absorb a compound, well made, the quicker and easier, and as such use more effectively, if the compound exists on a scale closer to the scale at which biological processes occur. The level of bioavailability of a drug is an important element to determine its effectiveness. A market research firm estimates to 65 billion dollars annual revenue from the drug market (almost 16 percent of total sales of the pharmaceutical industry) come from drugs that have low bioavailability, which promotes higher costs for patients, treatment ineffective and an increased risk of toxicidad.27
Elan Corporation, headquartered in Dublin, Ireland, has developed a patented process to "grind" pharmaceuticals and produce small particles (typically below 100 nm) that have a greater bioavailability and faster absorption rates, according to reports from the very compañía.28 Elan also asserts that the newly formulated drug Nanomedicine eliminate the "variability fasting / satiety (ie, that matters less if the drug is taken with food). Large pharmaceutical companies like Wyeth, Merck and Abbott and gave their proprietary compounds to Elan for "wheel." In most cases, the drugs and had the U.S. FDA approval in their formulations and larger, and as companies can demonstrate the "bioequivalence" 29-that the difference in the action of the drug from its former and the new wording is "medically insignificant" - the new Nanomedicine version is not subjected to more regulatory scrutiny, as it would if more evidence were asked clínicas.30
baratos.33
Bright Red Blood In Stool And Cysts On Ovaries
Nanomedicine. 17/25. Malaria Vs
nanotechnology enthusiasts have high hopes that provide especially effective treatments to combat disease and illness. The reason is simple: nanotechnology operates on the same scale biology. A DNA molecule is about 2.5 nm wide and hemoglobin (blood protein that is responsible for transporting oxygen) is about 5 nm in diameter. Human cells are much larger, in the order of 10-20 microns in diameter (10,000 to 20,000 nanometers) - which means that materials and nanoscale devices can easily penetrate in almost all cells without triggering immune response alguna.21
nanotechnology enthusiasts have high hopes that provide especially effective treatments to combat disease and illness. The reason is simple: nanotechnology operates on the same scale biology. A DNA molecule is about 2.5 nm wide and hemoglobin (blood protein that is responsible for transporting oxygen) is about 5 nm in diameter. Human cells are much larger, in the order of 10-20 microns in diameter (10,000 to 20,000 nanometers) - which means that materials and nanoscale devices can easily penetrate in almost all cells without triggering immune response alguna.21
exploit quantum effects addition, some nanoscale materials designed as biomedical applications show unusual properties that increase its functionality. Substances under the range near 100 nm may behave differently than larger particles of the same substance. Nanoscale materials may differ from the versions in force micro or macro, color, elasticity and / or toxicity, may be able to conduct electricity more efficiently or may be more chemically reactive. The optical, electrical or structural that are specific to the nanometer scale are known as "quantum effects." Moreover, the quantum properties of a substance can change in the nanoscale range. Gold Nanoparticles are inert, for example, while other gold nanoparticles of different sizes are reactive.
The form is also important.
is possible that a 20 nm spherical nanoparticles of a specific substance is not toxic to cells, while a 60 nm particle in the form of bar of the same substance, produces a
while a 60 nm particle in the form of bar of the same substance, produces a cytotoxic effect toxic to cells.) Currently there are no models that can predict the quantum effects, so hat the project is to characterize specific nanomaterials -In an attempt to understand their physical attributes, their biological properties in vitro and in vivo compatibility (using animals first) .24 The task of completely apear new world of nanoscale materials is overwhelming, if not impossible, if one takes into account all possible variations of substance, size, shape and surface structure. increase bioavailability
(The words in bold in the text are defined in the glossary) However, not all medical applications of nanotechnology exploit quantum effects. A drug that takes the form of a particle of 400 nm can be more effective than its 2 micron because it has more biological availability *, ie that the body uses it, or it may be able to have direct access to a tumor, for example, and is not likely to exhibit nanoscale properties, unique. In general, only the substances below 100 nm (at least one dimension) can exhibit quantum effects, although there are individual cases, as with polymers that are reinforced with nanoparticles forming links between the two materials, where special properties are displayed in sizes larger than 100 nm.25
latest vision is to combine drugs nano-formulated with a targeted drug delivery based on personalized medicine "approach to health management that is based on considering the patient's genetic profile to discover their individual predispositions to particular diseases or their level of responsiveness to specific drugs. In the future, according to this view, treatment may be nanotechnology-enabled multifunction devices capable of detecting and identifying specific diseases at the cellular level and at the right time, providing the right drug at the right dose, tailoring treatment according to individual patient with information in real time, thereby assessing the state
enfermedad.26 the Letter Of Interest Template Sorority
Nanomedicine. 19/25. Applications.
the improvement of therapy: homo sapiens refined
Can be used nano-scale technologies to combat health?
the improvement of therapy: homo sapiens refined
Can be used nano-scale technologies to combat health?
While governments, industry and scientists, particularly in OECD countries, are quick to highlight the potential contributions of nanotechnology in the remediation of reduced health, are also ready to point out that advances in "converging technologies", nanotechnology, biotechnology, information technology, neurotechnology and cognitive sciences-will respond to perceived health as less than optimal. Is within the scope of technologies for improving human performance that convergence may have greater impact and higher profits.
Technological convergence will theoretically possible to refine the structure, functioning and capabilities of human brains and bodies. It is not, in this view, simply remove the disabilities or cure disease, but producing bodies stronger, faster, exceeding the performance of more healthy and athletic bodies today, the brain remodeling to retain more information and to communicate directly with computers, artificial limbs or other brains. An example is the implantation of artificial neurons, already approved by the FDA for clinical use, to replace neurons damaged by Parkinson's disease. The device allows you to download updated software, a computer directly to the implant ex vivo in cuerpo.49 For now, these devices are reserved for those suffering from a disease in the near future will be more difficult to distinguish between what constitutes a disease and what merely is a less than optimal health, or to distinguish between therapy and refinement or improvement.
a grand finale, the new refined body created by converging technologies may extend human life span well beyond a century. According to the U.S. government, technologies converging at the nanoscale "improve human performance" in the workplace, in playgrounds, in classrooms and in the battlefields. Downloadable intelligence, memory, downloadable hiperdesempeño bodies that require a revised definition of our species, Homo sapiens. Or maybe the new technological realities we create the need for a new classification for once and for all (Homo sapiens 2.0), which describes the fraction world population that can pay for its refinement by technological convergence. Although relatively few people can afford to pay a full upgrade package, some enhancements, which are possible with the converging technologies will penetrate deeper into society and "naturalize" to that people consider necessary corrections, the same way we now consider the glasses increase. At the same time, there will be a corporate bid to define and expand the range of "health condition" is often treatable, dress up campaigns to "raise awareness the public "- in order to create or expand markets for new refinements available. The practice of promotion to create market conditions to be treated is known as traffic enfermedades.50 Certain personality traits (say, shyness), features (such as strength or height "average"), cognitive features (an intelligence "normal ") are deemed undesirable and correctable (and gradually unacceptable). The line between enhancement and therapy, which is already blurred, will be lost completely. The effect is a shift in the perception of what is "normal" and the creation of what Dr. Gregor Wolbring, biochemical and researcher in health issues at the University of Calgary, called a "capability gap" .51 Just as the digital divide, the skills gap distances mark the boundary between North and South, between rich and poor everywhere.
ethical debate about what it means to be human and how to preserve our humanidad.52
* Magnetic Stimulation transcranial (TMS for short English): This is a procedure that stimulates areas of the brain from the outside, through the use of an electromagnetic field. The TMS can help reveal the roles of active parts (or off) of the brain, but is considered as a potential treatment for brain disorders, including Parkinson's disease or depression.
The use of magnetic fields to stimulate (or off) different parts of the brain has led investigators to discover that the "normal" people can dramatically increase your brain power. A recent study conducted by Professor Allan Snyder at the Centre for the Mind, a joint venture between the Australian National University and the University of Sydney showed that transcranial magnetic stimulation of left temporal lobe improved the ability of participants to guess the number of items were shown on a computer screen. The ability subsided one hour after the estimulación.62 Is it much so that workers consume brain stimulation instead of coffee on their breaks? Is something considered brain stimulation needed to maintain a competitive edge in the job? How much brain expansion is enough?
sleep deprivation: They are not intended to help those suffering from insomnia and other sleep disorders. In fact, they are designed to make it sustainable deprivation. The U.S. military at the forefront of research on sleep deprivation and already funded dozens of projects, including studies on the potential use of TMS to reduce the need for dormir.63
* Laser Eye Surgery
: In some cases, is now possible to restore the perfect 20-20 poor vision through corrective surgery. Millions of surgeries are performed every year (for 2005 were calculated as 1.6 million U.S. only) .65 And the number of surgeries is growing, and is expected to continue increasing. Since most people do not feel that prescription glasses are an "upgrade" option, should we consider the potential social impacts of generalized perfect vision (or vision beyond perfect)? The New York Times recently noted that in the past five years, the academy U.S. navy has provided corrective eye surgery, free of charge, to all midshipmen (the eye can benefit from it) .66 Less than 30 percent of the class of 2006 refused to undergo surgery (the number of denials is decreasing every year .) An unintended consequence is that referred to the Naval Academy was unable to meet its share of submarine officers in any of these five years. Traditionally, the submarines are the second most promising option for those items that do not have perfect vision. Aviation-first choice for naval officers, and requiring perfect vision, "is now the most viable option for most. As these and other more extreme improvements become popular among the general population, what we can expect social corners? How will we deal with these impacts had not anticipated?
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