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| *Caused by strains of ''Mucor, Absidia, Rhizopus'' and ''Mortierella'' | | *Caused by strains of ''Mucor, Absidia, Rhizopus'' and ''Mortierella'' |
− | **Occurs widely in nature | + | **''Mucor circinelloides''(rare), ''Rhizomucor pusillus'' and ''R. meihi'' |
| + | **''Absidia corymbifera'' often causes zygomycosis in cattle and pigs |
| + | **''Rhizopus arrhizus, R. microsporus'' and ''R. rhizopodormis'' |
| + | **''Mortierella wolfi'' implicated in bovine abortion (mycotic placentitis), ''M. hygrophila'' in fowl and ''M.polycephala'' in cattle |
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| + | *Occurs widely in nature |
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| *Infection is by inhalation and ingestion | | *Infection is by inhalation and ingestion |
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− | *Infects lymph nodes of the respiratory and alimentary tract | + | *Infects [[Lymph Nodes - Anatomy & Physiology|lymph nodes]] of the [[Cardiorespiratory System - Anatomy & Physiology|respiratory]] and [[Alimentary - Anatomy & Physiology|alimentary tract]] |
− | **Lymph nodes enlarge and become caseous | + | **[[Lymph Nodes - Anatomy & Physiology|Lymph nodes]] enlarge and become caseous |
− | **Can cause stomach and intestinal ulcers | + | **Can cause [[Alimentary - Anatomy & Physiology#Stomach|stomach]] and [[Small Intestine - Anatomy & Physiology|intestinal]] ulcers |
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| *Granulomatous lesions which can ulcerate | | *Granulomatous lesions which can ulcerate |
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| *Mostly localised lesions but can be generalised | | *Mostly localised lesions but can be generalised |
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| + | *Pigs |
| + | **Mediatinal and submandibular [[Lymph Nodes - Anatomy & Physiology|lymph nodes]] lesions |
| + | **Embolic tumours in the [[Liver - Anatomy & Physiology|liver]] and [[Lungs - Anatomy & Physiology|lungs]] |
| + | **Can also be present in gastric ulcers |
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| + | *Cattle |
| + | **Bronchial, mesenteric and mediastinal [[Lymph Nodes - Anatomy & Physiology|lymph nodes]] lesions |
| + | **Ulcers of the [[Nasal cavity - Anatomy & Physiology|nasal cavity]] and [[The Abomasum - Anatomy & Physiology|abomasum]] also occur |
| + | **Often contaminate the [[Gestation -Placenta - Anatomy & Physiology|placenta]] |
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| + | *Horses, dogs, cats, sheep, mink, guinea-pigs and mice can also be infected |
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| + | *Microscopically: |
| + | **Fragments of non-septate hyphae which are branched and coarse |
| + | **''Rhizomucor'' produce a thick, grey mycelium and have short, black, spherical sporangia |
| + | **''Mucor'' produce thick, colourless mycelium with no rhizoids. Globose spoangia with small spores are present and sporagiospores are simple or branched. |
| + | **''Absidia'' resemble ''Rhizopus'' grossly |
| + | **''Mortierella'' produce white, velvet colonies on Sabouraud's Dextrose and Blood agar |
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| + | *Grows on Sabauraud's Dextrose agar |
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| + | *Treatment is with [[Antifungal Drugs#Polyene Antifungals|Amphotericin B]] |
| + | **Surgery is also an option in treatment |
| + | **Common contaminants |
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| ==Further Links== | | ==Further Links== |
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| *[[Antifungal Drugs]] | | *[[Antifungal Drugs]] |