"Polymyxins" Pronounce,Meaning And Examples
"Polymyxins" Natural Recordings by Native Speakers
"Polymyxins" Meaning
Polymyxins are a group of antibiotics that work by damaging the bacterial cell membrane, ultimately leading to cell lysis and death. The most common members of the polymyxin family are polymyxin B and polymyxin E (also known as colistin).Polymyxins are typically used to treat serious bacterial infections, particularly those caused by gram-negative bacteria. They are often used when other antibiotics have failed or are ineffective.The mechanism of action of polymyxins involves binding to the lipid A domain of the lipopolysaccharide outer membrane of the bacterial cell wall, causing a disruption of the cell membrane and leading to changes in membrane permeability, impaired nutrient uptake, and ultimately, cell death.Polymyxins are administered intravenously (into a vein) and are often used in intensive care settings to treat conditions such as pneumonia, sepsis, and infections of the urinary tract. However, they are associated with several side effects, including nephrotoxicity (kidney damage) and neurotoxicity. Due to these risks, their use is limited and typically reserved for severe, life-threatening infections.
"Polymyxins" Examples
Usage Examples of "Polymyxins"Example 1: Medical UsePolymyxins are a class of antibiotics used to treat severe bacterial infections, particularly those caused by gram-negative bacteria. They work by binding to the bacterial cell membrane, disrupting the cell wall and ultimately leading to cell lysis.##Example 2: Mechanism of ActionPolymyxins exhibit a unique mode of action, where they bind to the lipid A portion of the lipopolysaccharide layer of the bacterial cell wall. This binding disrupts the proper functioning of the cell membrane, preventing the cell from maintaining its osmotic balance.###Example 3: Resistance to PolymyxinsPolymyxin resistance arises when bacteria acquire mutations that alter the structure of their cell membranes, making it difficult for polymyxin molecules to bind effectively. Additionally, enzymes that degrade or inactivate polymyxin can also confer resistance.#### Example 4: Contraindications and Side EffectsPolymyxins can have severe nephrotoxic and neurotoxic effects, particularly with high doses or prolonged use. They are contraindicated in patients with pre-existing kidney disease, and their use should be carefully monitored in patients with liver or kidney impairment.#### Example 5: Comparison with Other AntibioticsPolymyxins are generally more effective than other antibiotics against gram-negative bacteria. However, they are less effective against certain gram-positive bacteria. Their effectiveness can also be limited by the risk of resistance development and the potential for adverse effects.
Example 2: Mechanism of ActionPolymyxins exhibit a unique mode of action, where they bind to the lipid A portion of the lipopolysaccharide layer of the bacterial cell wall. This binding disrupts the proper functioning of the cell membrane, preventing the cell from maintaining its osmotic balance.###Example 3: Resistance to PolymyxinsPolymyxin resistance arises when bacteria acquire mutations that alter the structure of their cell membranes, making it difficult for polymyxin molecules to bind effectively. Additionally, enzymes that degrade or inactivate polymyxin can also confer resistance.#### Example 4: Contraindications and Side EffectsPolymyxins can have severe nephrotoxic and neurotoxic effects, particularly with high doses or prolonged use. They are contraindicated in patients with pre-existing kidney disease, and their use should be carefully monitored in patients with liver or kidney impairment.#### Example 5: Comparison with Other AntibioticsPolymyxins are generally more effective than other antibiotics against gram-negative bacteria. However, they are less effective against certain gram-positive bacteria. Their effectiveness can also be limited by the risk of resistance development and the potential for adverse effects.
"Polymyxins" Similar Words
Polymorphs
Polymorphs are figurative creatures that appear in a mythological and metaphorical context. In various mythologies, including Fantasy literature and Role-Playing games, they are often described as creatures or beings that have the ability to change shape at will, into different animals or forms, often according to their mood or environment.
Polymorphy
Polymorphism is a concept in object-oriented programming (OOP) that refers to the ability of an object to take on multiple forms. This means that an object of a particular class can have methods and properties that are not defined in its class definition, but are defined in one of its subclasses.In simpler terms, polymorphism is when a single entity (an object or method) can behave differently depending on the context in which it is used.For example, if you have a class called "Animal" with methods "eat()" and "sleep()", a subclass "Dog" might also have a method "bark()". Then, if you create an instance of the "Dog" class and call the "eat()" method on it, it will still behave like a dog eating, even though the "eat()" method is defined in the "Animal" class.Polymorphism is a fundamental concept in object-oriented programming and is used extensively in many programming languages that support OOP, including C++, Java, Python, and C#.
Polymox
Polymyalgia
Polymyalgia rheumatica (PMR) is a condition characterized by widespread inflammation of the muscles, causing pain and stiffness, particularly in the shoulders, hips, and neck. The symptoms are similar to those of polymyalgic inflammatory arthropathy, but it's a distinct condition.Causes:The exact cause is unknown, but possible contributing factors include:<em> Autoimmune disorders</em> Vasculitis (inflammation of the blood vessels)<em> Infectious diseases</em> Inflammatory conditions (e.g., giant cell arteritis)Symptoms:----------------The main symptoms include:<em> Severe pain and stiffness in the muscles, particularly in the shoulders, hips, and neck</em> Morning stiffness that improves with activity<em> Limited range of motionDiagnosis:</em> Medical history and physical examination<em> Blood tests to rule out other conditions</em> Imaging tests (e.g., X-rays, MRI) to rule out other causesTreatment:<em> Corticosteroids to reduce inflammation and relieve symptoms</em> Immunosuppressive medication in some casesIf you or someone you know is experiencing symptoms of PMR, consult a healthcare professional for a proper diagnosis and treatment plan.
Polymyodous
Polymyodous refers to something with many muscles. "Poly-" means many, "myo-" means muscle, and "-dous" suggests a proportional or related quantity. This term may be used in scientific or technical contexts.
Polymyography
Polymyography (also known as surface electromyography or polysynaptics) is a diagnostic tool where electrodes are placed on the skin to record and analyze the electrical activity of various muscles, typically to assess the degree of muscle fatigue and the health of the nervous system. This non-invasive technique measures the electromyography (EMG) signals generated by the muscles, providing information on muscle activation and fatigue.
Polymyositis
Polymyositis is a type of muscle inflammation (myositis) that affects multiple muscles in the body. It is an autoimmune disease, meaning that the body's immune system mistakenly attacks the muscle fibers, causing damage and inflammation.The term "poly" refers to multiple, indicating that the condition affects many muscles, and "myositis" refers to the inflammation of muscle tissue. The symptoms of polymyositis can include muscle weakness, stiffness, fatigue, and pain, particularly in the muscles of the shoulders, hips, and legs.Polymyositis is often compared to another autoimmune disease called dermatomyositis, which also affects the muscles, but also causes skin symptoms, such as a distinctive skin rash. Treatment for polymyositis typically involves anti-inflammatory medications, physical therapy, and in some cases, corticosteroids or other immunosuppressive medications to help manage the condition.
Polymyxin
Polymyxin is a type of antibiotic that is used to treat various bacterial infections. It is a group of bactericidal compounds that work by disrupting the bacterial cell membrane, ultimately causing cell death. Polymyxin is typically used to treat infections caused by Gram-negative bacteria, such as Pseudomonas aeruginosa, E. coli, and Acinetobacter baumannii.It is effective against a wide range of bacteria, including those that are resistant to other antibiotics. However, polymyxin can also have some side effects, such as nephrotoxicity (kidney damage) and neurotoxicity (nerve damage).Polymyxin is often used in combination with other antibiotics, and it is available in various forms, including topical and injectable forms. In addition to its antibacterial properties, polymyxin has also been found to have some antimicrobial properties against other types of microorganisms, such as fungi and viruses.
Polyneices
Polyneme
Polynemidae
The family of fish commonly known as threadsails or threadfins. They are found in tropical and subtropical waters around the world, and are characterized by their long, thin filaments that extend from their dorsal and anal fins.
Polynemoid
Polynesia
Polynesian
Polynesians
Polyneural
Polyneural refers to something that is related to or consisting of multiple nerves. In neuroscience, it can describe a condition where there is damage to multiple nerves or a neural network, or it can refer to a type of axon with multiple branching fibers.