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Related Concept Videos

Fungal Phylum Microsporidia01:28

Fungal Phylum Microsporidia

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Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
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Skin Diseases and Disorders

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Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
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Fungal Phylum Basidiomycota01:26

Fungal Phylum Basidiomycota

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Basidiomycota is a diverse phylum of fungi that includes ecologically significant decomposers such as white rot fungi, symbionts like mycorrhizal fungi, plant pathogens such as rusts and smuts, and edible species like Agaricus bisporus (the common button mushroom). These fungi play crucial roles in nutrient cycling, symbiotic relationships, and even human health. Their defining feature is the basidium, a microscopic club-shaped structure responsible for producing basidiospores.Fruiting Bodies...
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Fungal Phylum Ascomycota01:28

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Phylum Ascomycota, a major division within the subkingdom Dikarya, comprises a diverse range of fungal species, including both unicellular yeasts and filamentous molds such as Aspergillus and Penicillium. These fungi thrive in a variety of habitats, from aquatic ecosystems to terrestrial environments, playing crucial ecological and economic roles.Morphology and ReproductionThe defining characteristic of Ascomycetes, commonly referred to as sac fungi, is the ascus—a sac-like structure that...
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Reticular Dermis01:15

Reticular Dermis

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The papillary and reticular dermis are the two layers of the dermis. They are made of connective tissue with fibers of collagen extending from one to the other, making the border between the two somewhat indistinct. The dermal papillae extending into the epidermis belong to the papillary layer, whereas the dense collagen fiber bundles below belong to the reticular layer.
Reticular Layer
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Fungal Group Zygomycota01:29

Fungal Group Zygomycota

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Zygomycota, previously classified as a distinct fungal group, are primarily terrestrial, saprophytic molds that play a crucial role as decomposers. Recent phylogenetic studies have revealed that these fungi are now divided into two major clades — Mucoromycota, which includes many symbiotic species, and Zoopagomycota, which primarily consists of parasitic and pathogenic fungi. These groups exhibit distinct ecological roles and reproductive strategies while sharing key structural and...
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Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis
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Flagellate shiitake mushroom dermatitis.

Adam J Luber1, Lindsay S Ackerman

  • 1Banner University Medical Center. ajluber@gmail.com.

Dermatology Online Journal
|October 6, 2015
PubMed
Summary

Flagellate shiitake mushroom dermatitis caused a pruritic, patterned rash in an elderly woman. This reaction occurred shortly after consuming shiitake mushrooms.

Area of Science:

  • Dermatology
  • Toxicology

Background:

  • Cutaneous reactions to ingested substances can manifest in diverse ways.
  • Shiitake mushroom (Lentinula edodes) consumption is a known trigger for specific dermatoses.

Observation:

  • An 84-year-old female presented with a 5-day history of a pruritic skin eruption.
  • The rash exhibited characteristic arciform and linear patterns.

Findings:

  • The patient was diagnosed with flagellate shiitake mushroom dermatitis.
  • The onset of symptoms was directly linked to shiitake mushroom consumption the preceding day.

Implications:

  • This case highlights the importance of considering dietary triggers, particularly shiitake mushrooms, in the differential diagnosis of unusual skin eruptions.

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  • Awareness among clinicians and the public regarding potential adverse reactions to edible fungi is crucial for accurate diagnosis and management.