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An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of such infections. They may either kill or inhibit the growth of bacteria. A limited number of antibiotics also possess antiprotozoal activity. Antibiotics are not effective against viruses such as the ones which cause the common cold or influenza. Drugs which inhibit growth of viruses are termed antiviral drugs or antivirals. Antibiotics are also not effective against fungi. Drugs which inhibit growth of fungi are called antifungal drugs.
Antimicrobial resistance occurs when microbes evolve mechanisms that protect them from the effects of antimicrobials. All classes of microbes can evolve resistance to the point that one or more drugs used to fight them are no longer effective. Fungi evolve antifungal resistance, viruses evolve antiviral resistance, protozoa evolve antiprotozoal resistance, and bacteria evolve antibiotic resistance. Together all of these come under the umbrella of antimicrobial resistance.
Linezolid is an antibiotic used for the treatment of infections caused by Gram-positive bacteria that are resistant to other antibiotics. Linezolid is active against most Gram-positive bacteria that cause disease, including streptococci, vancomycin-resistant enterococci (VRE), and methicillin-resistant Staphylococcus aureus (MRSA). The main uses are infections of the skin and pneumonia although it may be used for a variety of other infections including drug-resistant tuberculosis. It is used either by injection into a vein or by mouth.
Levofloxacin, sold under the brand name Levaquin among others, is a broad-spectrum antibiotic of the fluoroquinolone drug class. It is the left-handed isomer of the medication ofloxacin. It is used to treat a number of bacterial infections including acute bacterial sinusitis, pneumonia, H. pylori, urinary tract infections, Legionnaires' disease, chronic bacterial prostatitis, and some types of gastroenteritis. Along with other antibiotics it may be used to treat tuberculosis, meningitis, or pelvic inflammatory disease. It is available by mouth, intravenously, and in eye drop form.
An antimicrobial is an agent that kills microorganisms (microbicide) or stops their growth. Antimicrobial medicines can be grouped according to the microorganisms they act primarily against. For example, antibiotics are used against bacteria, and antifungals are used against fungi. They can also be classified according to their function. The use of antimicrobial medicines to treat infection is known as antimicrobial chemotherapy, while the use of antimicrobial medicines to prevent infection is known as antimicrobial prophylaxis.
The Alliance for the Prudent Use of Antibiotics (APUA) is a non-profit organization founded in 1981 by Stuart B. Levy (1938–2019), Professor of Medicine at Tufts University and headquartered in Boston, Massachusetts. APUA's mission is to strengthen society's defenses against infectious disease by promoting appropriate access and use to antimicrobial agents and controlling antimicrobial resistance on a worldwide basis. APUA has a network of affiliated chapters in over 50 countries, and conducts applied antimicrobial resistance research, education, capacity building and advocacy at the global and grassroots levels.
Multiple drug resistance (MDR), multidrug resistance or multiresistance is antimicrobial resistance shown by a species of microorganism to at least one antimicrobial drug in three or more antimicrobial categories. Antimicrobial categories are classifications of antimicrobial agents based on their mode of action and specific to target organisms. The MDR types most threatening to public health are MDR bacteria that resist multiple antibiotics; other types include MDR viruses, parasites.
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In microbiology, the minimum inhibitory concentration (MIC) is the lowest concentration of a chemical, usually a drug, which prevents visible in vitro growth of bacteria or fungi. MIC testing is performed in both diagnostic and drug discovery laboratories.
The Infectious Diseases Society of America (IDSA) is a medical association representing physicians, scientists, and other healthcare professionals who specialize in infectious diseases. It was founded in 1963 and is based in Arlington, Virginia. As of 2018, IDSA had more than 11,000 members from across the United States and nearly 100 other countries on six different continents. IDSA's purpose is to improve the health of individuals, communities, and society by promoting excellence in patient care, education, research, public health, and prevention relating to infectious diseases. It is a 501(c)(6) organization.
Medical microbiology, the large subset of microbiology that is applied to medicine, is a branch of medical science concerned with the prevention, diagnosis and treatment of infectious diseases. In addition, this field of science studies various clinical applications of microbes for the improvement of health. There are four kinds of microorganisms that cause infectious disease: bacteria, fungi, parasites and viruses, and one type of infectious protein called prion.
Polypeptide antibiotics are a chemically diverse class of anti-infective and antitumor antibiotics containing non-protein polypeptide chains. Examples of this class include actinomycin, bacitracin, colistin, and polymyxin B. Actinomycin-D has found use in cancer chemotherapy. Most other polypeptide antibiotics are too toxic for systemic administration, but can safely be administered topically to the skin as an antiseptic for shallow cuts and abrasions.
Antibiotic misuse, sometimes called antibiotic abuse or antibiotic overuse, refers to the misuse or overuse of antibiotics, with potentially serious effects on health. It is a contributing factor to the development of antibiotic resistance, including the creation of multidrug-resistant bacteria, informally called "super bugs": relatively harmless bacteria can develop resistance to multiple antibiotics and cause life-threatening infections.
One Health Trust, formerly the Center for Disease Dynamics, Economics & Policy, is a public health research organization with offices in Washington, D.C., New Delhi, and Bangalore, India.
The British Society for Antimicrobial Chemotherapy (BSAC) is a UK-based multi-professional organisation committed to preventing infectious diseases and tackling the growing threat of drug-resistant infections – one of the one of the top global public health and development threats.
Combating Antibiotic Resistant Bacteria Biopharmaceutical Accelerator (CARB-X) is a global nonprofit partnership focused on supporting the development of new antibacterial products. Its mission is to strengthen the pipeline of vaccines, rapid diagnostics, antibiotics and non-traditional products to prevent, diagnose and treat life-threatening bacterial infections.
Kevin Outterson is a lawyer, a professor of law and the Austin B. Fletcher Professor Boston University School of Law (2023-present). He is also the executive director of Combating Antibiotic-Resistant Bacteria Biopharmaceutical Accelerator, a global non-profit partnership that supports companies developing new antibiotics, diagnostics, vaccines and other products to address drug-resistant bacterial infections.
The Society of Infectious Diseases Pharmacists (SIDP) is a non-profit organization comprising pharmacists and other allied health professionals specializing in infectious diseases and antimicrobial stewardship. According to the Board of Pharmaceutical Specialties, clinical pharmacists specializing in infectious diseases are trained in microbiology and pharmacology to develop, implement, and monitor drug regimens. These regimens incorporate the pharmacodynamics and pharmacokinetics of antimicrobials for patients.
Alasdair Macintosh Geddes was a British medical doctor who was Professor of Infection at the University of Birmingham Medical School. In 1978, as the World Health Organization (WHO) was shortly to announce that the world's last case of smallpox had occurred a year earlier in Somalia, Geddes diagnosed a British woman with the disease in Birmingham, England. She was found to be the index case of the outbreak and became the world's last reported fatality due to the disease, five years after he had gained experience on the frontline of the WHO's smallpox eradication programme in Bangladesh in 1973.
Laura Piddock is a microbiologist, specialising in antibiotics and antibiotic resistance in bacteria. She is Professor Emerita at the University of Birmingham, UK and also Scientific Director within the Global Antibiotic Research and Development Partnership.
References
- ↑ "Antibiotic Action". Sgm.ac.uk. Archived from the original on 21 April 2015. Retrieved 16 June 2015.
- ↑ "British Society for Antimicrobial Chemotherapy" . Retrieved 25 May 2015.
- ↑ World Health Organization. "Draft global action plan – Objective 1: Improve awareness and understanding of antimicrobial resistance through effective communication, education and training" Retrieved on 09 July 2015.
- ↑ Piddock, L. J. (2012). "The crisis of no new antibiotics—what is the way forward?". The Lancet Infectious Diseases. 12 (3): 249–253. doi:10.1016/S1473-3099(11)70316-4. PMID 22101066.
- ↑ Longitude Prize. "Introducing our partnership with Antibiotic Action" Archived 11 March 2016 at the Wayback Machine Retrieved on 27 May 2015.
- ↑ European Society of Clinical Microbiology and Infectious Diseases. “Initiatives to fight antimicrobial resistance” Retrieved on 15 May 2015.
- ↑ High School, Boroughbridge (2015). "Essential Oils, the Answer to Antibiotic Resistance?". Young Scientists Journal (17): 43–45.