NEISSERIAE SPECIES
(Neisseriae species) Mode of
transmission,mechanisms by which microorganisms cause disease and diagnosis
Define Neisseriae
This
is a Gram negative intrcellular diplococci
occurring in pair
List the species of Neisseriae species
- Nesseriae gonorrhoeae
- Neisseriae menegitidis
- Neisseriae mucosa
- Neisseriae subflava
- Meisseriae flavescen
Mention the species of medical importance
- Nesseriae gonorrhoeae
- Neisseriae menegitidis
:Describe the normal habitat Nesseriae gonorrhoeae
Genital area
Describe the morphology Nesseriae gonorrhoeae
- Are Gram negative
Diplococci(pairs)
- Are oval, bean or kidney
shaped.
- Are in pairs or in
masses.
- Are non sporing.
- Have a small capsule.
Step
7: Describe the mode of transmission and pathogenicity of Nesseriae gonorrhoeae
Nesseriae gonorrhoeae is transmitted :-
- Sexual contact
- Congetnitally in neonatal during birth
PATHOGENICITY-
Nesseriae gonorrhoeae causes:-
- Acute
conjunctivitis in infants born of mothers with gonorrhoeae.The eyes are
infected during delivery.
- Vulvovaginitis
in pre-pubertal girls
- Gonococcus
arthritis i.e. joint pain,
fever and rash.
- In
male it causes;-inflammation of the ducts and dysuria
- In
female it causes ;-inflammation of the fallopian
tubes(salpingitis),PID,cervical and urethral infection
Enzymes
produced by Nesseriae gonorrhoeae
Enzymes
The above pathogenicity is due to
production/secretion of enzymes
These enzymes enable the bacteria to attack an
individual and cause a disease or an infection. They include:-
Beta lactamase
Describe the laboratory diagnosis Nesseriae gonorrhoeae
1.SPECIMENS
HVS
Blood
Urethral swab
Cervical swab
Eye swabs
CSF
NB:specimens are transported in
Stuarts transport media
2.CULTURE CHARACTERISTICS
- Its
an aerobe or facultative aerobe.
- It’s
a fastidious organism and delay should be avoided when culturing.
- Isolation
is done on :-
(i)Modified
New York City media(MNYC)
(i)Thayer
Martin media(TM)
MNYC or
THAYER MARTIN MEDIA
- -Colonies
grow rapidly. They are small grey raised colonies after an over night
incubation at 35-37 0c
.
3.BIOCHEMICAL
TESTS
Neisseriae gonorrhea is:-
- Oxidase positive
- Catalase positive
- Ferments glucose only.Doesnt ferment lactose
Maltose and sucrose
4.PREVENTION
- Avoid sexual contact with infected persons
- Safe sex practice
- Seek medical treatment
- Hygiene
Key Points
Define
Neisserie
This
is a Gram negative intrcellular
diplococci occurring in pair
List
the species of Neisseriae
- Nesseriae gonorrhoeae
- Neisseriae menegitidis
- Neisseriae mucosa
- Neisseriae subflava
- Meisseriae flavescen
- Describe the mode of
transmission and pathogenicity Nesseriae gonorrhoeae
is transmitted :-
- Sexual contact
- Congetnitally in neonatal during birth
Describe
the morphology Nesseriae gonorrhoeae
- Are Gram negative
Diplococci(pairs)
- Are oval, bean or kidney
shaped.
- Are in pairs or in
masses.
- Are non sporing.
- Have a small capsule.
BIOCHEMICAL
TESTS
Neisseriae gonorrhea is:-
- Oxidase positive
- Catalase positive
- Ferments glucose only.Doesnt ferment lactose
Maltose and sucrose
PREVENTION
- Avoid sexual contact with infected persons
- Safe sex practice
- Seek medical treatment
- Hygiene
Evaluation
·
List 2 media used
to isolate bacteria
·
Mention 4 species
of Neisseriae
Comments
Post a Comment