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Nanotechnology in medicine essays
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Nanotechnology in medicine essays
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WHAT IS NANOTECHNOLOGY The National Nanotechnology Initiative defines nanotechnology as “science, engineering, and technology conducted at a nanoscale, which is about 1 to 100 nanometers.” In a calculative sense, there are 25,400,000 nanometers in an inch and a sheet of newspaper is about 100,000 nanometers thick. A nanometer is a billionth of a meter, putting that into perspective, if a marble were a nanometer, a meter would be the size of the Earth. Due to the miniscule size of the work of nanotechnology, it can be used throughout all fields of science, including chemistry, biology, physics, materials science and engineering to study and apply microscopic objects and abstractions.
Physicist Richard Feynman introduced the concepts of nanoscience
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Unfortunately, due to nonspecific targeting by anticancer agents, many side effects occur and poor drug delivery of those agents cannot bring out the desired outcome in most of the cases. “The main challenge of cancer therapeutics is to differentiate the cancerous cells and the normal body cells” (Bharali). Conventional chemotherapy fails to target the cancerous cells selectively without interacting with the normal body cells. Thus, they cause serious side effects, including organ damage resulting in impaired treatment with a lower dose and ultimately low survival …show more content…
“Top 5 Advances in Medical Technology.” ASME.org, Mar. 2016, www.asme.org/engineering-topics/articles/bioengineering/top-5-advances-medical-technology.
“Nanotechnology in Cancer Treatment.” Nanotechnology in Cancer Treatment, 2016 Hawk's Perch Technical Writing, LLC, www.understandingnano.com/cancer-treatment-nanotechnology.html.
Ouellette, Jennifer. “Scientists Build Tiny Microcannons That Fire Drug-Filled Nanobullets.”Gizmodo, Gizmodo.com, 6 Jan. 2016, gizmodo.com/scientists-build-tiny-microcannons-that-fire-drug-fille-1751172846.
Palma, Matteo. “From Living Computers to Nano-Robots: How We're Taking DNA beyond Genetics.” Phys.org - News and Articles on Science and Technology, The Conversation, 7 June 2016, phys.org/news/2016-06-nano-robots-dna-genetics.html.
“Safety of Nanotechnology.” National Cancer Institute, www.cancer.gov/sites/ocnr/cancer-nanotechnology/safety.
S. A. Mousa and D. J. Bharali, “Nanotechnology-based detection and targeted therapy in cancer: nano-bio paradigms and applications,” Cancers, vol. 3, no. 3, pp. 2888–2903, 2011.
Sutradhar, Kumar Bishwajit, and Md. Lutful Amin. “Nanotechnology in Cancer Drug Delivery and Selective Targeting.” International Scholarly Research Notices, Hindawi, 16 Jan. 2014,
Smithsonian. This 1,600 Year Old Goblet Show the Romans Were Nanotechnology Pioneers. n.d. Web. 2 May 2014.
The main idea of this study is to underscore: "the need to validate potential cellular targets for adjuvant and systemic therapies on disseminated cancer cells directly"( Cancer Cell: July 2003).
The book Genome by Matt Ridley tells the story of the relationship between genome and life by examining the twenty three chromosomes of the human DNA. Each chromosome literally and metaphorically becomes a chapter in the literal and metaphorical book of DNA. In this book of DNA, Ridley examines a particular aspect of the chromosomes chapter by chapter to see how it affects life and humanity’s understanding of life, humans and genetics itself. Although each chapter dives into different aspects of DNA and gathers stories as varied as the genes’ applications, Ridley connects them with important ideas about life and humanity’s understanding of life.
U.S. Congress, Office of Technology Assessment. 1990. Unconventional Cancer Treatments, OTA-H-405. Washington, D.C.: U.S. Government Printing Office.
Chemotherapy is the treatment of a tumor with chemical agents to reduce mass or eradicate a tumor completely. There are certain mechanisms by which chemotherapy inhibits cancer. The first mechanism is cell death by cytotoxicity. Some chemical agents in certain amounts are toxic to cells. The cells die due to the toxic...
Wang, K., Wu, X., & Huang, J. (2013, February 28). Cancer stem cell theory: therapeutic implications for nanomedicine. Retrieved December 12, 2013, from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3589204/
[25] Jong WH, Borm PJ. Drug delivery and nanoparticles: applications and hazards. Int J Nanomedicine 2008; 3: 133–149.
Regenerative medicine targets the conservation and development of organ function. The modification of tissues is obtained by linking living cells with materials that work as scaffolds to support cell generation. Nanotechnology is the means that feeds the material structure that simulate biological ones and additionally provide a direct delivery system. The functionality of nanotechnology for regenerative medicine is primarily due to its small unit size according to the International System of Units, one nanometer is one-billionth of a meter. The unit size allows for the technological apparatus to navigate the bloodstream and target and fix damage cells in tissues.
Nanomedicine is offering incredible and innovative therapies like cancer nanomedicine, nanosurgery, and tissue engineering. In cancer nanomedicine, they use “targeted drug delivery” to target the tumor itself and avoid harming the normal, healthy cells (Berger, 2017). This in return, offers a more effective treatment with better outcomes and less side effects. In cancer nanomedicine, nanoparticles are used as tumor destroying mediators that use high temperatures to destroy them. These nanoparticles have to be injected into the tumor, then they have to be activated to produce this heat and then they are destroyed via a magnetic field, X-rays, or light (Berger,
When we hear, cancer treatment, our minds naturally shoot straight to chemotherapy. Chemotherapy is the most commonly used way to treat cancer. There is a saying that goes “Chemotherapy is an opponent itself simultaneously caring you and hurting you”. (Morasca, 2015). Cancer refers to the abnormal growth of cells which tend to proliferate in an uncontrolled way and in some cases, it spreads to other parts of the body. The main types of cancer treatment include: surgery, radiation therapy, immunotherapy, targeted therapy, hormone therapy, stem cell transplant, precision medicine, and chemotherapy.
Wolf, A. (2011). What is cryonics?. In Institute for Evidence-Based Cryonics. Retrieved December 30, 2013, from http://www.evidencebasedcryonics.org/what-is-cryonics/.
The present traditional approach to cancer treatment is experimental and sometimes inefficient as the same medication and therapies are used for all. In fact, tumor heterogeneity allows the distinct populations of cells exist in one tumor due to multiple mutations. These cells exhibit different levels of metabolism, gene expression, proliferation ability and metastatic potential which allow cells to develop resistance to a drug commonly used to treat cancer. Very often patients develop treatment-related toxicity when the treatment was selected inappropriately to the severity of cancer. As a result, some patients with severe progression of the disease may be undertreated and some who experiences latent stages may be overtreated. Therefore, molecular understanding of cancer enabled by progressive development in gene sequencing, targeted therapies and molecular diagnosis should increase the potential of personalized cancer treatment to replace the traditional
Nanotechnology includes nanorobots which are so small that they can be injected into the human bloodstream after which the nanorobots can do investigations or repair at cellular level. Nanorobots could optimize the delivery of pharmaceutical products, these means that medicines which are targeted on a specific type of cells can be delivered to only those cells by the nanorobots. The robots can attach to the cells after which they can inject the drug into the target cells. This could be a great breakthrough for cancer treatments such as chemotherapy because there is a minimal chance of injecting healthy cells with the drug and therefor negative side effects can be avoided.
Nano biotechnology are terms that refer to the connection of nanotechnology and biology. Given that the subject is one that has only appeared very recently, bio nanotechnology and Nano biotechnology serve as complete terms for several related technologies.
Nanotechnology is science, technology and engineering that is conducted at the nanoscale. The nanoscale is about 1 to 100 nanometres.