Biatriospora mackinnonii is a rare fungus. It caused mycetoma, a disease, in Somalia way back in 1976. However, this infection is not very common. It has been reported in various countries like Australia, India, Mexico, USA, Brazil, and Germany.
Some notable cases include a 65 year old man from New Zealand. He got a fatal lung infection after a transplant in 2009. Also, a 56 year old Australian woman developed lung issues due to B. mackinnonii and Aspergillus fumigatus fungus in 2012. Another patient, a 71 year old American man with leukemia and myeloma, suffered widespread B. mackinnonii and Fusarium solani infection in 2014.
Though reported cases exist, the precise numbers of B. mackinnonii infections remain unclear. These infections seem infrequent, without outbreaks or endemic areas. The fungus survives in warm and humid regions. It can inhabit plants as an endophyte or marine or estuarine settings.
Kingdom: Fungi
Phylum: Ascomycota
Class: Dothideomycetes
Order: Pleosporales
Family: Pleosporaceae
Genus:Biatriospora
Species:B. mackinnonii
B. mackinnonii, classified as a filamentous fungus, displays distinctive morphological characteristics. The fungus produces dark brown to black septate hyphae with a diameter ranging from 2 to 4 µm.
Conidiophores, which are branched structures, form clusters of conidia at their tips. The conidia are ellipsoidal to fusiform, exhibiting a dark brown coloration and possessing two or three transverse septa as well as one or two longitudinal septa. These conidia are relatively small, measuring 10-15 x 5-7 µm, and feature a thick and smooth wall.
B. mackinnonii also develops sexual structures known as ascomata. These structures are spherical to flask-shaped, black in color, and characterized by a short neck. Within the ascomata, eight-spored asci are present, exhibiting a cylindrical to clavate shape and featuring a refractive apical ring.
The ascospores, released from the asci, are hyaline to pale brown, fusiform to ellipsoidal, and possess one or two transverse septa as well as one or two longitudinal septa.
A filamentous fungus called B. mackinnonii has many proteins that help it cause disease. Some enzymes like serine proteases, aspartyl proteases, and metalloproteases break down the host’s proteins and tissues. At the same time, protective proteins like catalases, superoxide dismutases, and glutathione reductases help the fungus fight oxidative stress from the host.
Interestingly, Biatriospora mackinnonii shares genetic similarities with other fungi in its order and family, such as Alternaria, Bipolaris, Curvularia, and Exserohilum. However, B. mackinnonii stands out from its close relatives with a smaller genome size (around 30 Mb) and a lower GC content (about 47%).
The type strain of B. mackinnonii, CBS 674.75, was first isolated from the skin of a patient with mycetoma in Somalia in 1976. Originally, it was called Pyrenochaeta mackinnonii. Later, morphological and molecular studies led to it being reclassified as Biatriospora. This strain, stored in the Central bureau of Schimmelcultures culture collection, is a key reference for understanding the genetic makeup of B. mackinnonii.
Biatriospora mackinnonii is a fungus that can infect the skin or eye after an injury. This may occur when humans interact with plants, soil or water. It leads to inflammation and tissue death. Tropical and subtropical regions provide the ideal climate for this fungus. It dwells inside plant tissues or thrives in marine environments.
Biatriospora mackinnonii causes a type of fungal skin infection called phaeohyphomycosis. It also causes a serious eye infection called black fungal keratitis. These infections have dark brown or black branching fungal strands and spores. Other features include abnormal tissue growth, small pockets of pus, and lumpy areas of inflammation.
Our body has strong barriers like skin and mucous membranes. They stop B. mackinnonii from entering unless there is an injury. These barriers make substances that prevent the fungus from growing and sticking, like lysozyme, immunoglobulins, and iron-binding proteins.
The innate immune system uses cells like neutrophils and macrophages to fight Biatriospora mackinnonii. These cells make reactive oxygen species, nitric oxide, and cytokines to recognize and kill the invading fungus. The complement system also helps by coating the fungus cells (opsonization) and breaking them apart (lysis).
Adaptive immunity is very important in fighting Biatriospora mackinnonii infections. It generates antibodies and lymphocytes that target specific parts of the fungus. This helps get rid of the infection and protects the body.
Biatriospora mackinnonii is a rare black fungus. It causes cutaneous phaeohyphomycosis. This is a fungal infection of the skin and tissues under the skin. Often, its signs are painful or painless bumps, sores, or masses on the skin. A dark or black color marks these skin problems. These skin lesions can vary in presentation but serve as key indicators of B. mackinnonii infection.
The fungus affects the eyes along with the skin. It causes black fungal keratitis, a severe eye disease. Eyes may show signs like damaged corneas, pus buildup in eye chambers, and vision loss. Severe eye infections from B. mackinnonii can perforate corneas, inflame corneal interiors, or spread systemically.
To detect B. mackinnonii, one technique involves culturing the fungus from body fluids or tissue samples on special media such as malt extract agar, potato dextrose¬ agar, or corn meal agar. This traditional method requires the fungus to demonstrate moderate growth and tolerance for high salt concentrations. Although colony appearance and microscopic features aid identification, they may not definitively distinguish it from closely related fungi.
Examining affected tissue samples from areas like skin or eyes through histopathology is crucial. Using special stains highlights fungal elements, revealing characteristic dark brown to black, septate¬ hyphae, and conidia of B. mackinnonii within the tissues. Additional features include pseudoe-epitheliomatous hyperplasia, microabsce-sses, and granulomas.
Molecular methods like polymerase chain reaction, sequencing, or hybridization techniques are conducted for more precise and rapid diagnosis. These DNA-based approaches offer higher sensitivity and specificity compared to culture or histopathology. They enable¬ accurate detection and species-level identification of B. mackinnonii.
When working with substances possibly carrying B. mackinnonii, it’s crucial to wear protective gear like gloves and goggles. During activities like gardening, farming, or fishing where there’s risk of skin or eye injury, one should be cautious.
Following the prescribed antifungal therapy is essential. It may involve oral or IV itraconazole. Adhering fully to the treatment plan for its full duration ensures effective eradication of the infection.
Surgical procedures like debridement or penetrating keratoplasty may be required. These remove infected tissue¬ or restore corneal function in cases involving the eye.
Boosting the patient’s immune status by addressing conditions like diabetes, HIV, or cancer is recommended.
Biatriospora mackinnonii is a rare fungus. It caused mycetoma, a disease, in Somalia way back in 1976. However, this infection is not very common. It has been reported in various countries like Australia, India, Mexico, USA, Brazil, and Germany.
Some notable cases include a 65 year old man from New Zealand. He got a fatal lung infection after a transplant in 2009. Also, a 56 year old Australian woman developed lung issues due to B. mackinnonii and Aspergillus fumigatus fungus in 2012. Another patient, a 71 year old American man with leukemia and myeloma, suffered widespread B. mackinnonii and Fusarium solani infection in 2014.
Though reported cases exist, the precise numbers of B. mackinnonii infections remain unclear. These infections seem infrequent, without outbreaks or endemic areas. The fungus survives in warm and humid regions. It can inhabit plants as an endophyte or marine or estuarine settings.
Kingdom: Fungi
Phylum: Ascomycota
Class: Dothideomycetes
Order: Pleosporales
Family: Pleosporaceae
Genus:Biatriospora
Species:B. mackinnonii
B. mackinnonii, classified as a filamentous fungus, displays distinctive morphological characteristics. The fungus produces dark brown to black septate hyphae with a diameter ranging from 2 to 4 µm.
Conidiophores, which are branched structures, form clusters of conidia at their tips. The conidia are ellipsoidal to fusiform, exhibiting a dark brown coloration and possessing two or three transverse septa as well as one or two longitudinal septa. These conidia are relatively small, measuring 10-15 x 5-7 µm, and feature a thick and smooth wall.
B. mackinnonii also develops sexual structures known as ascomata. These structures are spherical to flask-shaped, black in color, and characterized by a short neck. Within the ascomata, eight-spored asci are present, exhibiting a cylindrical to clavate shape and featuring a refractive apical ring.
The ascospores, released from the asci, are hyaline to pale brown, fusiform to ellipsoidal, and possess one or two transverse septa as well as one or two longitudinal septa.
A filamentous fungus called B. mackinnonii has many proteins that help it cause disease. Some enzymes like serine proteases, aspartyl proteases, and metalloproteases break down the host’s proteins and tissues. At the same time, protective proteins like catalases, superoxide dismutases, and glutathione reductases help the fungus fight oxidative stress from the host.
Interestingly, Biatriospora mackinnonii shares genetic similarities with other fungi in its order and family, such as Alternaria, Bipolaris, Curvularia, and Exserohilum. However, B. mackinnonii stands out from its close relatives with a smaller genome size (around 30 Mb) and a lower GC content (about 47%).
The type strain of B. mackinnonii, CBS 674.75, was first isolated from the skin of a patient with mycetoma in Somalia in 1976. Originally, it was called Pyrenochaeta mackinnonii. Later, morphological and molecular studies led to it being reclassified as Biatriospora. This strain, stored in the Central bureau of Schimmelcultures culture collection, is a key reference for understanding the genetic makeup of B. mackinnonii.
Biatriospora mackinnonii is a fungus that can infect the skin or eye after an injury. This may occur when humans interact with plants, soil or water. It leads to inflammation and tissue death. Tropical and subtropical regions provide the ideal climate for this fungus. It dwells inside plant tissues or thrives in marine environments.
Biatriospora mackinnonii causes a type of fungal skin infection called phaeohyphomycosis. It also causes a serious eye infection called black fungal keratitis. These infections have dark brown or black branching fungal strands and spores. Other features include abnormal tissue growth, small pockets of pus, and lumpy areas of inflammation.
Our body has strong barriers like skin and mucous membranes. They stop B. mackinnonii from entering unless there is an injury. These barriers make substances that prevent the fungus from growing and sticking, like lysozyme, immunoglobulins, and iron-binding proteins.
The innate immune system uses cells like neutrophils and macrophages to fight Biatriospora mackinnonii. These cells make reactive oxygen species, nitric oxide, and cytokines to recognize and kill the invading fungus. The complement system also helps by coating the fungus cells (opsonization) and breaking them apart (lysis).
Adaptive immunity is very important in fighting Biatriospora mackinnonii infections. It generates antibodies and lymphocytes that target specific parts of the fungus. This helps get rid of the infection and protects the body.
Biatriospora mackinnonii is a rare black fungus. It causes cutaneous phaeohyphomycosis. This is a fungal infection of the skin and tissues under the skin. Often, its signs are painful or painless bumps, sores, or masses on the skin. A dark or black color marks these skin problems. These skin lesions can vary in presentation but serve as key indicators of B. mackinnonii infection.
The fungus affects the eyes along with the skin. It causes black fungal keratitis, a severe eye disease. Eyes may show signs like damaged corneas, pus buildup in eye chambers, and vision loss. Severe eye infections from B. mackinnonii can perforate corneas, inflame corneal interiors, or spread systemically.
To detect B. mackinnonii, one technique involves culturing the fungus from body fluids or tissue samples on special media such as malt extract agar, potato dextrose¬ agar, or corn meal agar. This traditional method requires the fungus to demonstrate moderate growth and tolerance for high salt concentrations. Although colony appearance and microscopic features aid identification, they may not definitively distinguish it from closely related fungi.
Examining affected tissue samples from areas like skin or eyes through histopathology is crucial. Using special stains highlights fungal elements, revealing characteristic dark brown to black, septate¬ hyphae, and conidia of B. mackinnonii within the tissues. Additional features include pseudoe-epitheliomatous hyperplasia, microabsce-sses, and granulomas.
Molecular methods like polymerase chain reaction, sequencing, or hybridization techniques are conducted for more precise and rapid diagnosis. These DNA-based approaches offer higher sensitivity and specificity compared to culture or histopathology. They enable¬ accurate detection and species-level identification of B. mackinnonii.
When working with substances possibly carrying B. mackinnonii, it’s crucial to wear protective gear like gloves and goggles. During activities like gardening, farming, or fishing where there’s risk of skin or eye injury, one should be cautious.
Following the prescribed antifungal therapy is essential. It may involve oral or IV itraconazole. Adhering fully to the treatment plan for its full duration ensures effective eradication of the infection.
Surgical procedures like debridement or penetrating keratoplasty may be required. These remove infected tissue¬ or restore corneal function in cases involving the eye.
Boosting the patient’s immune status by addressing conditions like diabetes, HIV, or cancer is recommended.
Biatriospora mackinnonii is a rare fungus. It caused mycetoma, a disease, in Somalia way back in 1976. However, this infection is not very common. It has been reported in various countries like Australia, India, Mexico, USA, Brazil, and Germany.
Some notable cases include a 65 year old man from New Zealand. He got a fatal lung infection after a transplant in 2009. Also, a 56 year old Australian woman developed lung issues due to B. mackinnonii and Aspergillus fumigatus fungus in 2012. Another patient, a 71 year old American man with leukemia and myeloma, suffered widespread B. mackinnonii and Fusarium solani infection in 2014.
Though reported cases exist, the precise numbers of B. mackinnonii infections remain unclear. These infections seem infrequent, without outbreaks or endemic areas. The fungus survives in warm and humid regions. It can inhabit plants as an endophyte or marine or estuarine settings.
Kingdom: Fungi
Phylum: Ascomycota
Class: Dothideomycetes
Order: Pleosporales
Family: Pleosporaceae
Genus:Biatriospora
Species:B. mackinnonii
B. mackinnonii, classified as a filamentous fungus, displays distinctive morphological characteristics. The fungus produces dark brown to black septate hyphae with a diameter ranging from 2 to 4 µm.
Conidiophores, which are branched structures, form clusters of conidia at their tips. The conidia are ellipsoidal to fusiform, exhibiting a dark brown coloration and possessing two or three transverse septa as well as one or two longitudinal septa. These conidia are relatively small, measuring 10-15 x 5-7 µm, and feature a thick and smooth wall.
B. mackinnonii also develops sexual structures known as ascomata. These structures are spherical to flask-shaped, black in color, and characterized by a short neck. Within the ascomata, eight-spored asci are present, exhibiting a cylindrical to clavate shape and featuring a refractive apical ring.
The ascospores, released from the asci, are hyaline to pale brown, fusiform to ellipsoidal, and possess one or two transverse septa as well as one or two longitudinal septa.
A filamentous fungus called B. mackinnonii has many proteins that help it cause disease. Some enzymes like serine proteases, aspartyl proteases, and metalloproteases break down the host’s proteins and tissues. At the same time, protective proteins like catalases, superoxide dismutases, and glutathione reductases help the fungus fight oxidative stress from the host.
Interestingly, Biatriospora mackinnonii shares genetic similarities with other fungi in its order and family, such as Alternaria, Bipolaris, Curvularia, and Exserohilum. However, B. mackinnonii stands out from its close relatives with a smaller genome size (around 30 Mb) and a lower GC content (about 47%).
The type strain of B. mackinnonii, CBS 674.75, was first isolated from the skin of a patient with mycetoma in Somalia in 1976. Originally, it was called Pyrenochaeta mackinnonii. Later, morphological and molecular studies led to it being reclassified as Biatriospora. This strain, stored in the Central bureau of Schimmelcultures culture collection, is a key reference for understanding the genetic makeup of B. mackinnonii.
Biatriospora mackinnonii is a fungus that can infect the skin or eye after an injury. This may occur when humans interact with plants, soil or water. It leads to inflammation and tissue death. Tropical and subtropical regions provide the ideal climate for this fungus. It dwells inside plant tissues or thrives in marine environments.
Biatriospora mackinnonii causes a type of fungal skin infection called phaeohyphomycosis. It also causes a serious eye infection called black fungal keratitis. These infections have dark brown or black branching fungal strands and spores. Other features include abnormal tissue growth, small pockets of pus, and lumpy areas of inflammation.
Our body has strong barriers like skin and mucous membranes. They stop B. mackinnonii from entering unless there is an injury. These barriers make substances that prevent the fungus from growing and sticking, like lysozyme, immunoglobulins, and iron-binding proteins.
The innate immune system uses cells like neutrophils and macrophages to fight Biatriospora mackinnonii. These cells make reactive oxygen species, nitric oxide, and cytokines to recognize and kill the invading fungus. The complement system also helps by coating the fungus cells (opsonization) and breaking them apart (lysis).
Adaptive immunity is very important in fighting Biatriospora mackinnonii infections. It generates antibodies and lymphocytes that target specific parts of the fungus. This helps get rid of the infection and protects the body.
Biatriospora mackinnonii is a rare black fungus. It causes cutaneous phaeohyphomycosis. This is a fungal infection of the skin and tissues under the skin. Often, its signs are painful or painless bumps, sores, or masses on the skin. A dark or black color marks these skin problems. These skin lesions can vary in presentation but serve as key indicators of B. mackinnonii infection.
The fungus affects the eyes along with the skin. It causes black fungal keratitis, a severe eye disease. Eyes may show signs like damaged corneas, pus buildup in eye chambers, and vision loss. Severe eye infections from B. mackinnonii can perforate corneas, inflame corneal interiors, or spread systemically.
To detect B. mackinnonii, one technique involves culturing the fungus from body fluids or tissue samples on special media such as malt extract agar, potato dextrose¬ agar, or corn meal agar. This traditional method requires the fungus to demonstrate moderate growth and tolerance for high salt concentrations. Although colony appearance and microscopic features aid identification, they may not definitively distinguish it from closely related fungi.
Examining affected tissue samples from areas like skin or eyes through histopathology is crucial. Using special stains highlights fungal elements, revealing characteristic dark brown to black, septate¬ hyphae, and conidia of B. mackinnonii within the tissues. Additional features include pseudoe-epitheliomatous hyperplasia, microabsce-sses, and granulomas.
Molecular methods like polymerase chain reaction, sequencing, or hybridization techniques are conducted for more precise and rapid diagnosis. These DNA-based approaches offer higher sensitivity and specificity compared to culture or histopathology. They enable¬ accurate detection and species-level identification of B. mackinnonii.
When working with substances possibly carrying B. mackinnonii, it’s crucial to wear protective gear like gloves and goggles. During activities like gardening, farming, or fishing where there’s risk of skin or eye injury, one should be cautious.
Following the prescribed antifungal therapy is essential. It may involve oral or IV itraconazole. Adhering fully to the treatment plan for its full duration ensures effective eradication of the infection.
Surgical procedures like debridement or penetrating keratoplasty may be required. These remove infected tissue¬ or restore corneal function in cases involving the eye.
Boosting the patient’s immune status by addressing conditions like diabetes, HIV, or cancer is recommended.
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