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Bacterial Phylum Spirochaetes01:30

Bacterial Phylum Spirochaetes

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Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased...
429

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Bartonella neuroretinitis (cat-scratch disease).

Siew Mei Yap1, Mamoun Saeed2, Patricia Logan3

  • 1Department of Neurology, Beaumont Hospital, Dublin, Ireland siewmeiy@gmail.com.

Practical Neurology
|June 18, 2020
PubMed
Summary

Cat-scratch disease, caused by Bartonella henselae, can lead to meningitis and neuroretinitis. High clinical suspicion is key, even with initial low-positive serology, as repeat testing may confirm the diagnosis.

Area of Science:

  • Infectious Diseases
  • Neurology
  • Ophthalmology

Background:

  • Cat-scratch disease is caused by Bartonella henselae, a bacterium with worldwide distribution.
Keywords:
Bartonella henselaecat scratch diseasemacular starneuroretinitis

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  • Neuroretinitis is a recognized complication of Bartonella henselae infection.
  • Bartonella neuroretinitis can mimic optic neuritis, presenting with optic disc edema and macular star.