Molecular medicine

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Molecular medicine is a broad field, where physical, chemical, biological, bioinformatics and medical techniques are used to describe molecular structures and mechanisms, identify fundamental molecular and genetic errors of disease, and to develop molecular interventions to correct them. [1] The molecular medicine perspective emphasizes cellular and molecular phenomena and interventions rather than the previous conceptual and observational focus on patients and their organs. [2]

Contents

History

In November 1949, with the seminal paper, "Sickle Cell Anemia, a Molecular Disease", [3] in Science magazine, Linus Pauling, Harvey Itano and their collaborators laid the groundwork for establishing the field of molecular medicine. [4] In 1956, Roger J. Williams wrote Biochemical Individuality, [5] a prescient book about genetics, prevention and treatment of disease on a molecular basis, and nutrition which is now variously referred to as individualized medicine [6] and orthomolecular medicine. [7] Another paper in Science by Pauling in 1968, [8] introduced and defined this view of molecular medicine that focuses on natural and nutritional substances used for treatment and prevention.

Published research and progress was slow until the 1970s' "biological revolution" that introduced many new techniques and commercial applications. [9]

Molecular surgery

Some researchers separate molecular surgery as a compartment of molecular medicine. [10]

Education

Molecular medicine is a new scientific discipline in European universities. [11] Combining contemporary medical studies with the field of biochemistry, it offers a bridge between the two subjects. At present only a handful of universities offer the course to undergraduates. With a degree in this discipline, the graduate is able to pursue a career in medical sciences, scientific research, laboratory work, and postgraduate medical degrees.

Subjects

Core subjects are similar to biochemistry courses and typically include gene expression, research methods, proteins, cancer research, immunology, biotechnology and many more. In some universities molecular medicine is combined with another discipline such as chemistry, functioning as an additional study to enrich the undergraduate program.

See also

Citations

  1. Jens Kurreck; Cy Aaron Stein (16 February 2016). Molecular Medicine: An Introduction. John Wiley & Sons. ISBN   978-3-527-33189-5.
  2. Massoud TF, Gambhir SS. Integrating noninvasive molecular imaging into molecular medicine: an evolving paradigm, Trends in Molecular Medicine, Vol. 13, No. 5, May 2007, pp. 183-191
  3. L Pauling, H Itano, SJ Singer, I Wells. "Sickle Cell Anemia, a Molecular Disease". Science, 25 November 1949, vol. 110, no. 2865, pp. 543-548.
  4. BJ Strasser, Perspectives: Molecular Medicine, [ "Sickle Cell Anemia, a Molecular Disease"] Science, 19 November 1999, vol. 286, no.5444, pp. 1488 - 1490.
  5. RJ Williams (1956) Biochemical Individuality: The Basis for the Genetotrophic Concept (John Wiley & Sons, 1956; University of Texas Press, 1969 to 1979; Keats Publishing, 1998, ISBN   0-87983-893-0
  6. MS Runge, C Patterson, VA McKusick, Principles of Molecular Medicine, 2nd ed, p. 53, Humana Press, 2006 ISBN   1-58829-202-9.
  7. RJ Williams, DK Kalita (1979) Physician's Handbook on Orthomolecular Medicine, Keats Publishing, ISBN   0-87983-199-5
  8. Pauling L (1968). "Orthomolecular psychiatry. Varying the concentrations of substances normally present in the human body may control mental disease". Science . 160 (825): 265–71. doi:10.1126/science.160.3825.265. PMID   5641253. S2CID   20153555.
  9. Izraeli, Shai; Rechavi, Gideon (August 2002). "Molecular medicine--an overview". The Israel Medical Association Journal. 4 (8): 638–640. ISSN   1565-1088. PMID   12183874.
  10. Brunicardi, F. C. (2000). "Molecular surgery and biology". American Journal of Surgery. 180 (6): 397–401. doi:10.1016/S0002-9610(00)00494-3. ISSN   0002-9610. PMID   11182386.
  11. "Best Doctorates in Molecular Sciences in Europe 2021". www.phdstudies.com. Retrieved 2021-08-06.

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<span class="mw-page-title-main">Linus Pauling</span> American scientist, peace activist, and Nobel Laureate (1901–1994)

Linus Carl Pauling was an American chemist, biochemist, chemical engineer, peace activist, author, and educator. He published more than 1,200 papers and books, of which about 850 dealt with scientific topics. New Scientist called him one of the 20 greatest scientists of all time, and as of 2000, he was rated the 16th most important scientist in history. For his scientific work, Pauling was awarded the Nobel Prize in Chemistry in 1954. For his peace activism, he was awarded the Nobel Peace Prize in 1962. He is one of five people to have won more than one Nobel Prize. Of these, he is the only person to have been awarded two unshared Nobel Prizes, and one of two people to be awarded Nobel Prizes in different fields, the other being Marie Curie.

<span class="mw-page-title-main">Glutamine</span> Chemical compound

Glutamine is an α-amino acid that is used in the biosynthesis of proteins. Its side chain is similar to that of glutamic acid, except the carboxylic acid group is replaced by an amide. It is classified as a charge-neutral, polar amino acid. It is non-essential and conditionally essential in humans, meaning the body can usually synthesize sufficient amounts of it, but in some instances of stress, the body's demand for glutamine increases, and glutamine must be obtained from the diet. It is encoded by the codons CAA and CAG.

Nosology is the branch of medical science that deals with the classification of diseases. Fully classifying a medical condition requires knowing its cause, the effects it has on the body, the symptoms that are produced, and other factors. For example, influenza is classified as an infectious disease because it is caused by a virus, and it is classified as a respiratory infection because the virus infects and damages certain tissues in the respiratory tract. The more that is known about the disease, the more ways the disease can be classified nosologically.

<span class="mw-page-title-main">Anemia</span> Medical condition

Anemia or anaemia is a blood disorder in which the blood has a reduced ability to carry oxygen due to a lower than normal number of red blood cells, a reduction in the amount of hemoglobin or hemoglobin abnormalities. The name is derived from Ancient Greek: ἀναιμία anaimia, meaning 'lack of blood', from ἀν- an-, 'not' and αἷμα haima, 'blood'. When anemia comes on slowly, the symptoms are often vague, such as tiredness, weakness, shortness of breath, headaches, and a reduced ability to exercise. When anemia is acute, symptoms may include confusion, feeling like one is going to pass out, loss of consciousness, and increased thirst. Anemia must be significant before a person becomes noticeably pale. Symptoms of anemia depend on how quickly hemoglobin decreases. Additional symptoms may occur depending on the underlying cause. Preoperative anemia can increase the risk of needing a blood transfusion following surgery. Anemia can be temporary or long term and can range from mild to severe.

Orthomolecular medicine is a form of alternative medicine that aims to maintain human health through nutritional supplementation. The concept builds on the idea of an optimal nutritional environment in the body and suggests that diseases reflect deficiencies in this environment. Treatment for disease, according to this view, involves attempts to correct "imbalances or deficiencies based on individual biochemistry" by use of substances such as vitamins, minerals, amino acids, trace elements and fatty acids. The notions behind orthomolecular medicine are not supported by sound medical evidence, and the therapy is not effective for chronic disease prevention; even the validity of calling the orthomolecular approach a form of medicine has been questioned since the 1970s.

Orthomolecular psychiatry is the use of orthomolecular medicine for mental illness. The approach uses unorthodox forms of individualized testing and diagnosis to attempt to establish an etiology for each patient's specific symptoms, and claims to tailor the treatment accordingly, using a combination of nutrients, dietary changes and medications that are claimed to enhance quality of life and functionality as well as to reduce or eliminate symptoms and the use of xenobiotic drugs. Scientific studies have shown mixed results; although there are some promising results from nutritional psychiatry, some forms of orthomolecular psychiatry are ineffective.

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<span class="mw-page-title-main">Vernon Ingram</span>

Vernon Martin Ingram, was a German–American professor of biology at the Massachusetts Institute of Technology.

<span class="mw-page-title-main">Roger J. Williams</span> American biochemist

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Hemoglobin C is an abnormal hemoglobin in which glutamic acid residue at the 6th position of the β-globin chain is replaced with a lysine residue due to a point mutation in the HBB gene. People with one copy of the gene for hemoglobin C do not experience symptoms, but can pass the abnormal gene on to their children. Those with two copies of the gene are said to have hemoglobin C disease and can experience mild anemia. It is possible for a person to have both the gene for hemoglobin S and the gene for hemoglobin C; this state is called hemoglobin SC disease, and is generally more severe than hemoglobin C disease, but milder than sickle cell anemia.

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<span class="mw-page-title-main">Harvey Itano</span> American biochemist who lived 1920 to 2010

Harvey Akio Itano was an American biochemist best known for his work on the molecular basis of sickle cell anemia and other diseases. In collaboration with Linus Pauling, Itano used electrophoresis to demonstrate the difference between normal hemoglobin and sickle cell hemoglobin; their 1949 paper "Sickle Cell Anemia, a Molecular Disease" was a landmark in both molecular medicine and protein electrophoresis, though the use of electrophoresis to separate hemoglobin variants had been pioneered by Maud Menten and collaborators some years earlier.

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"Sickle Cell Anemia, a Molecular Disease" is a 1949 scientific paper by Linus Pauling, Harvey A. Itano, Seymour J. Singer and Ibert C. Wells that established sickle-cell anemia as a genetic disease in which affected individuals have a different form of the metalloprotein hemoglobin in their blood. The paper, published in the November 25, 1949 issue of Science, reports a difference in electrophoretic mobility between hemoglobin from healthy individuals and those with sickle-cell anemia, with those with sickle cell trait having a mixture of the two types. The paper suggests that the difference in electrophoretic mobility is probably due to a different number of ionizable amino acid residues in the protein portion of hemoglobin, and that this change in molecular structure is responsible for the sickling process. It also reports the genetic basis for the disease, consistent with the simultaneous genealogical study by James V. Neel: those with sickle-cell anemia are homozygous for the disease gene, while heterozygous individuals exhibit the usually asymptomatic condition of sickle cell trait.

<span class="mw-page-title-main">Sickle cell disease</span> Group of genetic blood disorders

Sickle cell disease (SCD) is a group of blood disorders typically inherited. The most common type is known as sickle cell anaemia. It results in an abnormality in the oxygen-carrying protein haemoglobin found in red blood cells. This leads to a rigid, sickle-like shape under certain circumstances. Problems in sickle cell disease typically begin around 5 to 6 months of age. A number of health problems may develop, such as attacks of pain, anemia, swelling in the hands and feet, bacterial infections, and stroke. Long-term pain may develop as people get older. The average life expectancy in the developed world is 40 to 60 years.

<span class="mw-page-title-main">Hemoglobin Hopkins-2</span>

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