|
|
(4 intermediate revisions by the same user not shown) |
Line 1: |
Line 1: |
− | {{unfinished}}
| + | #REDIRECT[[:Category:Subcutaneous Mycoses]] |
− | | |
− | {{toplink
| |
− | |backcolour =
| |
− | |linkpage =Fungi
| |
− | |linktext =FUNGI
| |
− | |pagetype=Bugs
| |
− | }}
| |
− | <br>
| |
− | | |
− | [[Chromoblastomycosis]]
| |
− | | |
− | | |
− | | |
− | [[Chromomycosis]]
| |
− | | |
− | | |
− | | |
− | [[Epizootic Lymphangitis]]
| |
− | | |
− | | |
− | [[Eumycotic Mycetoma]]
| |
− | | |
− | | |
− | ==Hyphomycosis==
| |
− | | |
− | *''Hyphomyces destruens''
| |
− | | |
− | *Opportunistic infection
| |
− | **Associated with trauma
| |
− | | |
− | *Rare
| |
− | | |
− | *Caused by ''Penicillium, Beauveria, Acremonium, Fusarium, Paecilomyces''
| |
− | | |
− | *Infects both animals and humans
| |
− | **Mainly affects horses
| |
− | | |
− | *Tropical and semi-tropical countries
| |
− | | |
− | *Progressive disease causing granulating and ulcerating lesions on the legs and lower body
| |
− | **Lesions grow rapidly
| |
− | **Cause extreme debility
| |
− | | |
− | *Occurs in water
| |
− | **Most often seen in ponies with access to ponds
| |
− | | |
− | *Chemotactically attracted to horse hair
| |
− | | |
− | *Does not respond well to treatment
| |
− | **Radical surgical excision the best method
| |
− | **Experiemental vaccination treatment is currently underway and has shown promising results
| |
− | | |
− | ==Pythiosis==
| |
− | | |
− | *Causes Mycotic Swamp Fever
| |
− | | |
− | *Also called phycomycosis
| |
− | | |
− | *Occurs in the USA, Australia, New Guinea, India, Brazil, Colombia, Japan, Costa Rica and Indonesia
| |
− | | |
− | *''Pythium insidiosum''
| |
− | | |
− | *Enters via wounds
| |
− | **[[Lips - Anatomy & Physiology|Lips]], [[Musculoskeletal System - Anatomy & Physiology#The Head and Neck|head]], [[Musculoskeletal System - Anatomy & Physiology#The Head and Neck|neck]], fetlock, hock and [[Hoof - Anatomy & Physiology|hoof]]
| |
− | | |
− | *Granulomatous infection
| |
− | **Necrosis and fistulous tracts
| |
− | **Yellow lesions
| |
− | | |
− | *Branching, separated fungi
| |
− | | |
− | *Progressive (rather than systemic) disease
| |
− | | |
− | *Surgery is needed
| |
− | | |
− | ==Rhinosporidiosis==
| |
− | | |
− | *''Rhinosporidium seeberi''
| |
− | | |
− | *Lives in water
| |
− | | |
− | *Causes a chronic, benign disease
| |
− | | |
− | *Affects cattle, mules, horses, dogs and humans
| |
− | | |
− | *Causes polyps on the [[Nasal cavity - Anatomy & Physiology|nasal]] and [[Eye - Anatomy & Physiology|ocular]] mucous membranes
| |
− | **Over 90% of cases affecting the [[Nasal cavity - Anatomy & Physiology|nasal]] mucous membranes affects male animals
| |
− | | |
− | *Occurs most frequently in tropical countries
| |
− | **Also common in the USA
| |
− | | |
− | *Large sporangia can be seen on wet mounts
| |
− | **Endospores visible
| |
− | **Sporangia develop into small, globose spores
| |
− | | |
− | *Treatment is by surgical excision
| |
− | | |
− | ==Sporotrichosis==
| |
− | [[Image:Sporotrichosis horse.jpg|thumb|right|150px|Sporotrichosis in a horse -Copyright Professor Andrew N. Rycroft, BSc, PHD, C. Biol.F.I.Biol., FRCPath]] | |
− | [[Image:Sporotrichosis cigar cells.jpg|thumb|right|150px|Sporotrichosis cigar shaped cells -Copyright Professor Andrew N. Rycroft, BSc, PHD, C. Biol.F.I.Biol., FRCPath]]
| |
− | *''Sporothrix schenckii''
| |
− | | |
− | *Occurs in soil, wood and vegetation
| |
− | **Saprophyte of both decaying and healthy vegetation
| |
− | | |
− | *Worldwide
| |
− | | |
− | *Exogenous infections through wounds
| |
− | | |
− | *Sporadic infections
| |
− | | |
− | *Non-contageous
| |
− | | |
− | *Causes subcutaneous nodules or granulomas
| |
− | **Nodules ulcerate discharging pus
| |
− | | |
− | *Spread via the [[Lymphatic System - Anatomy & Physiology|lymphatics]]
| |
− | | |
− | *The [[Bones and Cartilage - Anatomy & Physiology|bones]] and viscera can be involved which terminates in mortality
| |
− | **This is rare
| |
− | **Reported in dogs and horses
| |
− | | |
− | *Affects dogs, horses, cats, monkeys, mules, camels, donkeys, cattle, fowl and rodents
| |
− | **Most commonly seen in horses as an ascending lymphocutaneous infection of the legs
| |
− | **Can be confused with [[Subcutaneous Mycoses#Epizootic Lymphangitis|epizootic lymphangitis]] in horses
| |
− | | |
− | *Single cell, cigar shaped
| |
− | **Usually found within [[Neutrophils - WikiBlood|neutrophils]]
| |
− | **Yeast cell clusters with peripheral eosinophilic rays can be seen in tissue sections
| |
− | | |
− | *Stained using PAS, Gram stain (positive), fluorescent antibody and Calcofluor White
| |
− | | |
− | *Latex agglutination and immunodiffusion serology can be performed
| |
− | | |
− | *Grows on Blood agar and Sabouraud's Dextrose agar in one to three weeks
| |
− | **At 37°C:
| |
− | ***Colonies are smooth, cream to tan coloured and soft
| |
− | ***No mycelium can be seen
| |
− | **At 25°C to 27°C:
| |
− | ***Colonies turn from white and soft to tan to brown to black
| |
− | ***Leathery, wrinkled and coarse
| |
− | ***Mycelium can be seen as branching septate hyphae
| |
− | ***Conidiospores can also be seen
| |
− | | |
− | *Potassium iodide treatment orally
| |
− | **[[Antifungal Drugs#Flucytosine|5-fluorocytosine]] and [[Antifungal Drugs#Polyene Antifungals|amphotericin B]] can also be used
| |
− | | |
− | ==Further Links==
| |
− | *Pathology of [[Mycotic skin infections - Pathology#Subcutaneous mycoses|subcutaneous mycoses]]
| |
− | | |
− | *[[Antifungal Drugs]]
| |