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− | <big><center>[[Infectious agents and parasites|'''BACK TO INFECTIOUS AGENTS AND PARASITES''']]</center></big>
| + | #REDIRECT[[:Category:Chlamydophila species]] |
− | <big><center>[[Bacteria|'''BACK TO BACTERIA''']]</center></big>
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− | ''Chlamydophila psittaci'' involved in [[Nasal cavity - inflammatory#In Cats|feline rhinotracheitis]] together with [[Herpesviridae|herpes virus 1]] C.psittaci more frequently infects the conjunctival epithelium -> chronic conjunctivitis, see [[Bacterial infections#Feline Chlamydiosis|feline chlamydiosis]]
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− | *May cause [[Joints - inflammatory#In Sheep|arthritis in sheep]] and [[Joints - inflammatory#In Cattle|arthritis in cattle]]
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− | ===Overview===
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− | ===Characteristics===
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− | *Obligate intracellular bacteria
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− | *Gram negative bacteria with outer membrane, LPS, ribosomes, DNA and RNA
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− | *Peptidoglycan cell wall resistant to lysozyme
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− | *Only grow in presence of living eukaryotic cells
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− | *Unable to synthesis ATP therefore require intermediates from host cells
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− | *
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− | ===Pathogenesis and pathogenicity===
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− | *Elementary body, the infective form, phagocytosed and internalised into host epithelial cells
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− | *Transformation into larger reticulate body
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− | *Reticulate body divides by binary fission to form many new chlamydia cells
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− | *Reticulate body has un-crosslinked peptidoglycan, which is cross-linked to form elementary bodies
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− | *Elementary bodies released from dying host cells to infect other cells
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− | ===Clinical infections===
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− | ===Diagnosis===
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− | ===Treatments===
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