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Esophageal Candidiasis
Esophageal candidiasis is an opportunistic infection of the esophagus by '' Candida albicans''. The disease usually occurs in patients in immunocompromised states, including post-chemotherapy and in AIDS. However, it can also occur in patients with no predisposing risk factors, and is more likely to be asymptomatic in those patients. It is also known as candidal esophagitis or monilial esophagitis. Signs and symptoms People with esophageal candidiasis typically present with difficult or painful swallowing. Longstanding esophageal candidiasis can result in weight loss. There is often concomitant thrush in the mouth. Some patients present with esophageal candidiasis as a first presentation of systemic candidiasis. Diagnosis In most cases, the diagnosis is established based on response to therapy. Patients in whom esophageal candidiasis is suspected should receive a brief course of antifungal therapy with fluconazole. If the infection resolves after treatment with fluconazole, ...
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Chemotherapy
Chemotherapy (often abbreviated chemo, sometimes CTX and CTx) is the type of cancer treatment that uses one or more anti-cancer drugs (list of chemotherapeutic agents, chemotherapeutic agents or alkylating agents) in a standard chemotherapy regimen, regimen. Chemotherapy may be given with a cure, curative intent (which almost always involves combinations of drugs), or it may aim only to prolong life or to Palliative care, reduce symptoms (Palliative care, palliative chemotherapy). Chemotherapy is one of the major categories of the medical discipline specifically devoted to pharmacotherapy for cancer, which is called ''oncology#Specialties, medical oncology''. The term ''chemotherapy'' now means the non-specific use of intracellular poisons to inhibit mitosis (cell division) or to induce DNA damage (naturally occurring), DNA damage (so that DNA repair can augment chemotherapy). This meaning excludes the more-selective agents that block extracellular signals (signal transduction) ...
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Biopsy
A biopsy is a medical test commonly performed by a surgeon, interventional radiologist, an interventional radiologist, or an interventional cardiology, interventional cardiologist. The process involves the extraction of sampling (medicine), sample Cell (biology), cells or Biological tissue, tissues for examination to determine the presence or extent of a disease. The tissue is then Histopathology, fixed, dehydrated, embedded, sectioned, stained and mounted before it is generally examined under a microscope by a pathologist; it may also be analyzed chemically. When an entire lump or suspicious area is removed, the procedure is called an excisional biopsy. An incisional biopsy or core biopsy samples a portion of the abnormal tissue without attempting to remove the entire lesion or tumor. When a sample of tissue or fluid is removed with a needle in such a way that cells are removed without preserving the histological architecture of the tissue cells, the procedure is called a needle as ...
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Animal Fungal Diseases
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia (). With few exceptions, animals consume organic material, breathe oxygen, have myocytes and are able to move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development. Animals form a clade, meaning that they arose from a single common ancestor. Over 1.5 million living animal species have been described, of which around 1.05 million are insects, over 85,000 are molluscs, and around 65,000 are vertebrates. It has been estimated there are as many as 7.77 million animal species on Earth. Animal body lengths range from to . They have complex ecologies and interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology, and the study of animal behaviour is known as ethology. The animal kingdom is divided into five major clades, namely Porifera, Ctenophora, Placozo ...
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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 European Union in October 2005, and in the United States in September 2006. It 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 other drugs such as itraconazole and fluconazole. Clinical evidence of efficacy in treatment of invasive disease caused by ''Fusarium'' species ( fusariosis) is limited. It appears to be helpful in a mouse model of naegleriasis and kills ''Acanthamoeba castellanii'' cysts ''in vitro''. It has been used to treat mucormycosis (black fungus disease) caused by ''Rhizopus'' mold. Pharmacology Pharmacodynamics Posaconazole works by disrupting the close packing of acyl chains of phospholipids, impairing the functions of certain membra ...
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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. 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 Institute for Medical Research from cultures ...
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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 immunoc ...
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Itraconazole
Itraconazole, sometimes abbreviated ITZ, is an antifungal medication used to treat a number of fungal infections. This includes aspergillosis, blastomycosis, coccidioidomycosis, histoplasmosis, and paracoccidioidomycosis. It may be given by mouth or intravenously. Common side effects include nausea, diarrhea, abdominal pain, rash, and headache. Severe side effects may include liver problems, heart failure, Stevens–Johnson syndrome and allergic reactions including anaphylaxis. It is unclear if use during pregnancy or breastfeeding is safe. It is in the triazole family of medications. It stops fungal growth by affecting the cell membrane or affecting their metabolism. Itraconazole was patented in 1978 and approved for medical use in the United States in 1992. It is on the World Health Organization's List of Essential Medicines. Recent research works suggest itraconazole (ITZ) could also be used in the treatment of cancer by inhibiting the hedgehog pathway in a ...
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Triazoles
A triazole is a heterocyclic compound featuring a five-membered ring of two carbon atoms and three nitrogen atoms with molecular formula C2H3N3. Triazoles exhibit substantial Isomer, isomerism, depending on the positioning of the nitrogen atoms within the ring. Many triazoles are versatile, biologically active compounds commonly used as fungicides and plant retardants. However, triazoles are also useful in bioorthogonal chemistry, because the large number of nitrogen atoms causes triazoles to react similar to Azide, azides. Lastly, the many free lone pairs in triazoles make them useful as coordination compounds, although not typically as Piano stool complex, haptic ligands. Isomerism There are four triazole isomers, which are conventionally divided into two pairs of Tautomer, tautomers. In the 1,2,3-Triazole, 1,2,3-triazoles, the three nitrogen atoms are adjacent; in the 1,2,4-Triazole, 1,2,4-triazoles, an interstitial carbon separates out one nitrogen atom. Each category ...
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Nystatin
Nystatin, sold under the brand name Mycostatin among others, is an antifungal medication. It is used to treat ''Candida (fungus), Candida'' infections of the skin including diaper rash, Candidiasis, thrush, esophageal candidiasis, and vaginal yeast infections. It may also be used to prevent candidiasis in those who are at high risk. Nystatin may be used by mouth, in the vagina, or applied to the skin. Common side effects when applied to the skin include burning, itching, and a rash. Common side effects when taken by mouth include vomiting and diarrhea. During pregnancy use in the vagina is safe while other formulations have not been studied in this group. It works by disrupting the cell membrane of the fungal cells. Nystatin was discovered in 1950 by Rachel Fuller Brown and Elizabeth Lee Hazen. It was the first polyene macrolide antifungal. It is on the WHO Model List of Essential Medicines, World Health Organization's List of Essential Medicines. It is available as a generi ...
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Lamina Propria
The lamina propria is a thin layer of connective tissue that forms part of the moist linings known as mucous membranes or mucosae, which line various tubes in the body, such as the respiratory tract, the gastrointestinal tract, and the urogenital tract. The lamina propria is a thin layer of loose (areolar) connective tissue, which lies beneath the epithelium, and together with the epithelium and basement membrane constitutes the mucosa. As its Latin name indicates, it is a characteristic component of the mucosa, or the mucosa's "own special layer." Thus, the term mucosa or mucous membrane refers to the combination of the epithelium and the lamina propria. The connective tissue of the lamina propria is loose and rich in cells. The cells of the lamina propria are variable and can include fibroblasts, lymphocytes, plasma cells, macrophages, eosinophilic leukocytes, and mast cells. It provides support and nutrition to the epithelium, as well as the means to bind to the underlying t ...
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Candida (genus)
''Candida'' is a genus of yeasts. It is the most common cause of fungal infections worldwide and the largest genus of medically important yeasts. The genus ''Candida'' encompasses about 200 species. Many species are harmless Commensalism, commensals or endosymbionts of hosts including humans. When Mucous membrane, mucosal barriers are disrupted or the immune system is compromised, however, they can invade and cause disease, known as an opportunistic infection. Candida is located on most mucosal surfaces and mainly the gastrointestinal tract, along with the skin. ''Candida albicans'' is one of the most commonly isolated species and can cause infections (candidiasis or thrush) in humans and other animals. In yeast in winemaking, winemaking, some species of ''Candida'' can potentially wine fault, spoil wines. Many species are found in gut flora, including ''C. albicans'' in mammalian hosts, whereas others live as endosymbionts in insects. Systemic disease, Systemic infections of th ...
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Histology
Histology, also known as microscopic anatomy or microanatomy, is the branch of biology that studies the microscopic anatomy of biological tissue (biology), tissues. Histology is the microscopic counterpart to gross anatomy, which looks at larger structures visible without a microscope. Although one may divide microscopic anatomy into ''organology'', the study of organs, ''histology'', the study of tissues, and ''cytology'', the study of cell (biology), cells, modern usage places all of these topics under the field of histology. In medicine, histopathology is the branch of histology that includes the microscopic identification and study of diseased tissue. In the field of paleontology, the term paleohistology refers to the histology of fossil organisms. Biological tissues Animal tissue classification There are four basic types of animal tissues: muscle tissue, nervous tissue, connective tissue, and epithelial tissue. All animal tissues are considered to be subtypes of these ...
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