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Morax-Axenfeld diplobacilli - Wikipedia, the free encyclopedia
Morax-Axenfeld diplobacilli
From Wikipedia, the free encyclopedia
(Redirected from Moraxella lacunata)
Morax-Axenfeld diplobacillus or Moraxella lacunata is a rod-shaped,[1] Gram negative, non motile bacteria, generally present as diploid
pairs.[2] They cause one of the commonest forms of catarrhal conjunctivitis.[3]
Moraxella lacunata
Scientific classification
Contents
1 History
2 Characters
3 Clinical significance
4 References
History
M. lacunata was first described independently by Victor Morax (1896) and Theodor Axenfeld (1897), hence the name "Morax-Axenfeld
diplobacilli" and the name of eye affection in humans is sometimes called "Morax-Axenfeld conjunctivitis".[2]
Kingdom: Bacteria
Phylum: Proteobacteria
Class:
Gammaproteobacteria
Order:
Pseudomonadales
Family:
Moraxellaceae
Genus:
Moraxella
Species: M. lacunata
Binomial name
Moraxella lacunata
Characters
It has the ability to change its morphology in laboratory. M.lacunata became shorter and tended to lose their Gram-negative staining characteristic when left out for 5 days. They also
tended to retain these new characteristics on subsequent blood-agar transfers.[4]
Clinical significance
Infection occurs mainly in adults, but can occur at any age. It is characterized by:
1.
2.
3.
4.
5.
Chronic, mild angular blepharo-conjunctivitis frequently localized on the lid at the outer canthus.
Typical erythema of the edges of the lids
Slight maceration of the skin, most marked at the angles, especially the outer canthus.
Superficial infiltration of the cornea is not uncommon.[3]
The discharge is grayish yellow, adherent to the lashes and accumulates mainly at the angles.[5]
References
1. ^ Morax-axenfeld bacillus - Medical Definition and More from Merriam-Webster (http://www.merriam-webster.com/medical/morax-axenfeld%20bacillus)
2. ^ a b Bergey's Manual® of Systematic Bacteriology: Volume 2: The Proteobacteria ... - ‫ ﻛﺘﺐ‬Google (http://books.google.com.eg/books?
id=5zSYmcq0GdgC&pg=PA412&lpg=PA412&dq=morax+axenfeld+bacillus+gram+negative&source=bl&ots=fihYPxoWMh&sig=_BLAKOIQxFx0ASYZqXGUShf8KjQ&hl=ar&sa=X&ei=f
AWNUI3rGZDptQaN2YH4Aw&ved=0CDoQ6AEwBA#v=onepage&q&f=false)
3. ^ a b Read the ebook The pathology of the eye (Volume 1) by John Herbert Parsons (http://www.ebooksread.com/authors-eng/john-herbert-parsons/the-pathology-of-the-eye-volume-1ala/page-6-the-pathology-of-the-eye-volume-1-ala.shtml)
4. ^ JAMA Network | Archives of Ophthalmology | Variations in Morax-Axenfeld Diplobacillus (http://archopht.jamanetwork.com/article.aspx?articleid=624676)
5. ^ http://www.termiumplus.gc.ca/tpv2alpha/alpha-eng.html?
lang=eng&i=1&index=alr&srchtxt=tumefaccion&where=%28vpen_advanced,vpfr_advanced,vpes_advanced,vppt_advanced+inc+%27tumefaccion%27+%29&dom=NED&comencdomnsubj=
Retrieved from "http://en.wikipedia.org/w/index.php?title=Morax-Axenfeld_diplobacilli&oldid=531909701"
Categories: Gram-negative bacteria Moraxellaceae
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en.wikipedia.org/wiki/Moraxella_lacunata
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