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Chlamydia trachomatis. Designer : 徐安涛、徐滔、钊超 张慧慧、吴瑕、吴珍. case. - PowerPoint PPT Presentation
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Designer : 徐安涛、徐滔、钊超
张慧慧、吴瑕、吴珍
A 19-year-old woman presents for the evaluation of pelvic pain. The pain has progressively worsened over the past week. She has also sexually active, has had 4 lifetime partners, takes oral contraceptive pills, and occasionally uses condoms. On examination, she appears in no acute distress and does not have a fever. Her abdomen is soft with moderate lower abdominal tenderness. On pelvic examination, she is noted to have a yellow cervical discharge and significant cervical motion tenderness. No uterine or adnexal masses are palpated, but mild tenderness is also noted.
A Gram stain of the cervical discharge reveals only multiple polymorphonuclear leukocytes. A direct DNA probe test subsequently comes back positive for Chlamydia trachomatis.
Inclusion body
Rabies virus ( Negri body )
Cytomegalovirus
•
• TE8
• TE55
•
1 、 filterable 120—200nm
2 、 obligate intracellular parasite
3 、 a unique life cycle
Elementary body ( EB) :extracellular ; nondividing 300nm infectious particle;
stain –gymsa blue ,macchiavello red
Initial body (reticulate body ,RB): intracellular ;0.5-1.2µm , binary fission , non-infectious , gymsa and macchiavello blue , no densible nuclear substance ,but has reticular structure
Join the bacteria in 1973
1 、 contain DNA and RNA
2 、 cell wall G- , similar to G- bacteria LPS : contain genus specific epitopeMOMP: Species specific & Type specific epitopes encoding gene and sequence 、 vaccine HSP60Species : C.trachomatis C. pneumoniae C. psittaci C.pecorum subspecies :Biovar trachoma LGV Biovar mouseTypes :C T (A-K, 14) LGV(L1,L2a,L2b L3;4)
No peptidoglycan but sensible to penicillin
Resistance :sensible to heat 60 5-10mi℃n,-70 several years; antibiotics ℃
Endotoxoid substance
MOMP : avoid the fusion of lysosome and vacuole of elementary body ; HSP60
Inflammation :
necrosis
exudation
proliferation
Acute inflammation : weeping,viscous supp
urative secretion , conjunctival conjestion
Chronic inflammation : scarring , entropion trichiasis etc.
1)Trachoma ( A 、 B 、 Ba 、 C )
2)urogenital-tract infection, It is the main causative agent of nongonococcal urethritis(NGU)
In men , urethritis ,epididymitis ,
In women , urethritis ,cervicitis , pelvic inflammatory disease (PID)
3)Inclusion Conjunctivitis newborn,adult
4)Lymphogranuloma Venereum(LGV)
Main invade lymph tissue A painless papule on the genitali
a that heals
spontaneously
Designer : 徐安涛、徐滔、钊超
张慧慧、吴瑕、吴珍
Polymorphonuclear leukocyte
Extracelluar gram-negative diplococci
Intracelluar gram-negative diplococci
EB
Heparan sulfate ;Major outer membrane protein (MOMP)
RBBinary fission
Phagosome
AAs &ATP etc
Exocytosis
16—24 per ER
Primary differentiation
EB→RB
Secondary differentiation
RB→EB