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Scedosporiosis
Scedosporiosis is the general name for any mycosis - i.e., fungal infection - caused by a fungus from the genus Scedosporium. Current population-based studies suggest ''Scedosporium prolificans'' (also known and recently more commonly referred to as ''Lomentospora prolificans'') and ''Scedosporium apiospermum'' to be among the most common infecting agents from the genus, although infections caused by other members thereof are not unheard of. The latter is an asexual form (anamorph) of another fungus, '' Pseudallescheria boydii''. The former is a “black yeast” (aka dematiaceous fungus), currently not characterized as well, although both of them have been described as saprophytes. The fungi of this genus are more and more recognized as significant human pathogens. ''S. apiospermum'' is described as an emerging and even an “underrated” opportunistic pathogen. It was reported in a 2003 US study that Scedosporiosis had been associated with 25% of all non-''Aspergillus'' fungal ...
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Infectious Disease (medical Speciality)
Infectious diseases or ID, also known as infectiology, is a medical specialty dealing with the diagnosis and treatment of infections. An infectious diseases specialist's practice consists of managing nosocomial ( healthcare-acquired) infections or community-acquired infections and is historically associated with hygiene, epidemiology, clinical microbiology, travel medicine and tropical medicine. Scope Infectious diseases specialists typically serve as consultants to other physicians in cases of complex infections, and often manage patients with HIV/AIDS and other forms of immunodeficiency. Although many common infections are treated by physicians without formal expertise in infectious diseases, specialists may be consulted for cases where an infection is difficult to diagnose or manage. They may also be asked to help determine the cause of a fever of unknown origin. Specialists in infectious diseases can practice both in hospitals (inpatient) and clinics (outpatient). In hospitals ...
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Mortality Rate
Mortality rate, or death rate, is a measure of the number of deaths (in general, or due to a specific cause) in a particular population, scaled to the size of that population, per unit of time. Mortality rate is typically expressed in units of deaths per 1,000 individuals per year; thus, a mortality rate of 9.5 (out of 1,000) in a population of 1,000 would mean 9.5 deaths per year in that entire population, or 0.95% out of the total. It is distinct from "morbidity", which is either the prevalence or incidence of a disease, and also from the incidence rate (the number of newly appearing cases of the disease per unit of time). An important specific mortality rate measure is the crude death rate, which looks at mortality from all causes in a given time interval for a given population. , for instance, the CIA estimates that the crude death rate globally will be 7.7 deaths per 1,000 people in a population per year. In a generic form, mortality rates can be seen as calculated using (d/ ...
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Anidulafungin
Anidulafungin (International nonproprietary name, INN) (trade names Eraxis, Ecalta) is a Semisynthesis, semisynthetic echinocandin used as an antifungal medication, antifungal drug. It was previously known as LY303366. It may also have application in treating invasive ''Aspergillus'' infection when used in combination with voriconazole. It is a member of the class of antifungal drugs known as the echinocandins; its mechanism of action is by inhibition of Beta-glucan, (1→3)-β-D-glucan synthase, an enzyme important to the synthesis of the fungal cell wall. It is on the WHO Model List of Essential Medicines, World Health Organization's List of Essential Medicines. Indications * Fungemia, Candidemia and other forms of invasive ''Candida'' infections (intra-abdominal abscess and peritonitis) * Esophageal candidiasis Anidulafungin has not been studied in Infective endocarditis#Fungal, endocarditis, osteomyelitis, and Meningitis#Fungal, meningitis due to ''Candida'', and has not been ...
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Micafungin
Micafungin, sold under the brand name Mycamine, is an echinochandin antifungal medication used to treat and prevent invasive fungal infections including candidemia, abscesses, and esophageal candidiasis. It inhibits the production of beta-1,3-glucan, an essential component of fungal cell walls that is not found in mammals. Micafungin is administered intravenously. It received final approval from the U.S. Food and Drug Administration (FDA) in March 2005, and gained approval in the European Union in April 2008. It is on the ''World Health Organization's List of Essential Medicines''. Indications Micafungin is indicated for the treatment of candidemia, acute disseminated candidiasis, ''Candida'' peritonitis, abscesses and esophageal candidiasis. Since January 23, 2008, micafungin has been approved for the prophylaxis of ''Candida'' infections in patients undergoing hematopoietic stem cell transplantation (HSCT). Micafungin works by way of concentration-dependent inhibition ...
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Voriconazole
Voriconazole, sold under the brand name Vfend among others, is an antifungal medication used to treat a number of fungal infections. This includes aspergillosis, candidiasis, coccidioidomycosis, histoplasmosis, penicilliosis, and infections by ''Scedosporium'' or ''Fusarium''. It can be taken by mouth or used by injection into a vein. Common side effects include vision problems, nausea, abdominal pain, rash, headache, and seeing or hearing things that are not present. Use during pregnancy may result in harm to the baby. It is in the triazole family of medications. It works by affecting fungal metabolism and fungal cell membranes. Voriconazole was patented in 1990 and approved for medical use in the United States in 2002. It is on the World Health Organization's List of Essential Medicines. Medical uses Voriconazole is used to treat invasive aspergillosis and candidiasis and fungal infections caused by ''Scedosporium'' and ''Fusarium'' species, which may occur in immunocomprom ...
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Posaconazole
Posaconazole, sold under the brand name Noxafil among others, is a triazole antifungal medication. It was approved for medical use in the United States in September 2006, and is available as a generic medication. Medical uses Posaconazole is used to treat invasive ''Aspergillus'' and '' Candida'' infections. It is also used for the treatment of oropharyngeal candidiasis (OPC), including OPC refractory to itraconazole and/or fluconazole therapy. It is also used to treat invasive infections by ''Candida'', ''Mucor'', and ''Aspergillus'' species in severely immunocompromised patients. Clinical evidence for its utility in treatment of invasive disease caused by ''Fusarium'' species (fusariosis) is limited. It appears to be helpful in a mouse model of naegleriasis. Pharmacology Pharmacodynamics Posaconazole works by disrupting the close packing of acyl chains of phospholipids, impairing the functions of certain membrane-bound enzyme systems such as ATPase and enzymes of the el ...
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Isavuconazonium
Isavuconazonium sulfate, sold under the brand name Cresemba, is a systemic antifungal medication of the triazole class which is used to treat invasive aspergillosis and mucormycosis. The most common side effects include abnormal liver tests, nausea, vomiting, difficulty breathing, abdominal pain, diarrhea, injection site reactions, headache, low blood potassium and skin rash. Isavuconazonium is a prodrug of isavuconazole. Medical uses Isavuconazonium is used to treat invasive aspergillosis and invasive mucormycosis in adults aged eighteen years old and older. It is available in a capsule for administration by mouth and as a powder for administration via infusion. Contraindications Isavuconazonium is contraindicated in people taking strong CYP3A4 inhibitors, strong CYP3A4 inducers, or moderate CYP3A4 or CYP3A5 inducers. It is contraindicated in people with familial short QT syndrome. Side effects Common adverse effects (occurring in between 1 and 10% of people) include low p ...
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Amphotericin B
Amphotericin B is an antifungal medication used for serious fungal infections and leishmaniasis. The fungal infections it is used to treat include mucormycosis, aspergillosis, blastomycosis, candidiasis, coccidioidomycosis, and cryptococcosis. For certain infections it is given with flucytosine. It is typically given intravenously (injection into a vein). Common side effects include a reaction with fever, chills, and headaches soon after the medication is given, as well as kidney problems. Allergic symptoms including anaphylaxis may occur. Other serious side effects include low blood potassium and myocarditis (inflammation of the heart). It appears to be relatively safe in pregnancy. There is a lipid formulation that has a lower risk of side effects. It is in the polyene class of medications and works in part by interfering with the cell membrane of the fungus. Amphotericin B was isolated from '' Streptomyces nodosus'' in 1955 at the Squibb For Medical Research Institute from c ...
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Minimum Inhibitory Concentration
In microbiology, the minimum inhibitory concentration (MIC) is the lowest concentration of a chemical, usually a drug, which prevents visible growth of a bacterium or bacteria. MIC depends on the microorganism, the affected human being (in vivo only), and the antibiotic itself. It is often expressed in micrograms per milliliter (μg/mL) or milligrams per liter (mg/L). The MIC is determined by preparing solutions of the chemical in vitro at increasing concentrations, incubating the solutions with separate batches of cultured bacteria, and measuring the results using agar dilution or broth microdilution. Results have been graded into susceptible (often called sensitive), increased exposure, or resistant to a particular antimicrobial by using a breakpoint. Breakpoints are agreed upon values, published in guidelines of a reference body, such as the U.S. Clinical and Laboratory Standards Institute (CLSI), the British Society for Antimicrobial Chemotherapy (BSAC) or the European Committee ...
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Conidium
A conidium ( ; ), sometimes termed an asexual chlamydospore or chlamydoconidium (), is an asexual, non-motile spore of a fungus. The word ''conidium'' comes from the Ancient Greek word for dust, ('). They are also called mitospores due to the way they are generated through the cellular process of mitosis. The two new haploid cells are genetically identical to the haploid parent, and can develop into new organisms if conditions are favorable, and serve in biological dispersal. Asexual reproduction in ascomycetes (the phylum Ascomycota) is by the formation of conidia, which are borne on specialized stalks called conidiophores. The morphology of these specialized conidiophores is often distinctive between species and, before the development of molecular techniques at the end of the 20th century, was widely used for identification of (''e.g.'' ''Metarhizium'') species. The terms microconidia and macroconidia are sometimes used. Conidiogenesis There are two main types of co ...
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Morphology (biology)
Morphology is a branch of biology dealing with the study of the form and structure of organisms and their specific structural features. This includes aspects of the outward appearance (shape, structure, colour, pattern, size), i.e. external morphology (or eidonomy), as well as the form and structure of the internal parts like bones and organs, i.e. internal morphology (or anatomy). This is in contrast to physiology, which deals primarily with function. Morphology is a branch of life science dealing with the study of gross structure of an organism or taxon and its component parts. History The etymology of the word "morphology" is from the Ancient Greek (), meaning "form", and (), meaning "word, study, research". While the concept of form in biology, opposed to function, dates back to Aristotle (see Aristotle's biology), the field of morphology was developed by Johann Wolfgang von Goethe (1790) and independently by the German anatomist and physiologist Karl Friedrich Burdach ...
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Acrophialophora Fusispora
''Acrophialophora fusispora'' is a poorly studied ascomycete fungus found in soil, air and various plants. ''A. fusispora'' is morphologically similar to the genera ''Paecilomyces'' and ''Masonia'', but differ in the presence of pigmented conidiophores, verticillate phialides, and frequent sympodial proliferation. Moreover, ''A. fusispora'' is distinguished by its pigmented spindle-shaped conidia, covered with spiral bands. The fungus is naturally found in soils of tropical to temperate regions. The fungus has been identified as a plant and animal pathogen, and has recently been recognized as an emerging opportunistic human pathogen. ''A. fusispora'' infection in human is rare and has few documented clinical cases, but due to the rarity of the fungus and potential misidentification, the infections may be underdiagnosed. Clinical cases of ''A. fusispora'' include cases of keratitis, pulmonary colonization and infection, and cerebral infections. The fungus also has two documented ...
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