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serology test 1- syphilis, her
syphilis and the herpes viruses
65
Health Care
Undergraduate 4
04/05/2009

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Cards

Term
What disease is caused by Treponema pallidum?
Definition
syphilis
Term
an aerobic spirochete that is a slender spiral with uniform tightly wound coils
Definition
Treponema pallidum
Term
two nonpathogenic strains of Treponema pallidum
Definition
Reiter's strain and Nichol's strain
Term
two treponems that are morphologically identical to Treponema pallidum
Definition
Treponema pertenus and Treponema carateum
Term
what disease is caused by Treponema pertenus?
Definition
yaws
Term
what disease is caused by Treponema carateum?
Definition
pinta
Term
what stage of syphilis infection has a lesion called a chancre?
Definition
primary syphilis
Term
the onset of primary syphilis occurs how long after contact?
Definition
1-3 weeks
Term
in primary syphilis, what test is 70-80% positive?
Definition
nontreponema tests
Term
in primary syphilis, what test is 85% reactive?
Definition
FTA-ABS
Term
what kind of microscopy is used to visualize the spirochete isolated from a chancre?
Definition
dark field microscopy
Term
onset of secondary syphilis occurs how long after primary lesion?
Definition
3 weeks to 6 months
Term
a cutaneous rash, fever, sore throat, headache, malaise, mucous patches in the mouth are all symptoms of what?
Definition
secondary syphilis
Term
during secondary syphilis, what two tests are 100% reactive?
Definition
nontreponema tests and treponemal tests
Term
a noninfectious period following the secondary stage of syphilis which may last from 6 months to 25 years after the inital infection
Definition
latent period
Term
what stage of syphilis has no signs or symptoms?
Definition
latent period
Term
during the latent period, what test is 70% reactive?
Definition
nontreponema test
Term
during the latent period, what test is 97% reactive?
Definition
FTA-ABS
Term
during the latent period, can cerebrospinal fluid be used to test for syphilis?
Definition
no
Term
how long after infection is the onset of tertiary syphilis?
Definition
1 1/2 to 25 years or more
Term
three general forms of tertiary syphilis
Definition
benign tertiary lesions (gumma), neurosyphilis (8%), cardiovascular syphilis (10%)
Term
what percent of patients with untreated latent syphilis will develop tertiary syphilis?
Definition
about 33%
Term
what test is 95% reactive in neurosyphilis?
Definition
serum FTA-ABS
Term
in tertiary syphilis, what test is more likely to be reactive when using cerebrospinal fluid?
Definition
reagin tests
Term
what can cause a baby to be born stillborn, deformed or scarred?
Definition
congenital syphilis
Term
what drug is used to treat all stages of syphilis?
Definition
penicillin, tetracycline or doxycycline
Term
method of choice for visualizing spirochetes
Definition
darkfield microscopy
Term
what does FTA-ABS stand for?
Definition
fluorescent treponema antibody absorption test
Term
confirmatory method for positive nontreponemal tests
Definition
treponema tests
Term
Five types of treponema tests
Definition
Treponema palidum immobilization test, fluorescent treponema antibody absorption test (FTA-ABS), microhemagglutination assay for treponema pallidum (MHA-TP), Kolmer and Reiter complement fixation test, Treponema hemagglutination inhibition test (TPHI)
Term
which is less technically demanding, FTA-ABS or MHA-TP?
Definition
MHA-TP
Term
what is another name for nontreponemal tests?
Definition
reagin tests
Term
VDRL, RPR and ART are all types of what?
Definition
nontreponemal syphilis tests
Term
a variation of RPR, used in large blood centers
Definition
ART- automated reagin test
Term
what syphilis test is used to test cerebrospinal fluid?
Definition
VDRL
Term
four herpes viruses
Definition
Epstein-Barr virus, herpes simplex virus, cytomegalovirus, varicella zoster
Term
acute, self-limiting lymphoproliferative disease distinguished from lymphoma by tendency to spontaneous regression
Definition
infectious mononucleosis
Term
herpes virus 4
Definition
epstein barr virus
Term
fever, malaise, headache, lethargy, sore throat with exudate, splenomegaly and lymphadenopathy are all symptoms of what?
Definition
infectious mononucleosis
Term
two possible complications of infectious mononucleosis
Definition
hepatitis and encephalomeningitis
Term
any substance that stimulates the formation of sheep hemolysin
Definition
Forssman antigen
Term
several groups of antigens that occur in cells or fluid of unrelated animals and microorganisms and are so closely related that they cross-react with antibodies against any one member of the heterophile group
Definition
heterophile
Term
three ways EBV is transmitted?
Definition
saliva, blood transfusion, and possibly by mosquitoes
Term
what percent of healthy adults have antibodies to EBV?
Definition
90%
Term
what virus causes Burkitt's lymphoma in East Africa?
Definition
Epstein-Barr virus
Term
what virus causes Nasopharyngeal carcinoma in South China?
Definition
Epstein Barr virus
Term
a hemagglutination test for the presence of heterophile antibodies in the blood
Definition
Paul Bunnell test
Term
what test is used to differentiate heterophile antibodies (Forssman, serum sickness, infectious mononucleosis)?
Definition
Davidsohn Differential test
Term
are infectious mono heterophile antibodies absorbed by guinea pig kidney cells?
Definition
no
Term
Are Forssman antibodies absorbed by guinea pig kidney cells?
Definition
yes
Term
agglutination after guinea pig kidney absorption indicates presence of what heterophile antibody?
Definition
infectious mono
Term
agglutination after beef RBC absorption indicates presence of what heterophile antibody?
Definition
Forssman
Term
no agglutination after guinea pig kidney absorption and beef RBC absorption indicates presence of what heterophile antibody?
Definition
serum sickness
Term
what is the usual method of specific detection of EBV?
Definition
indirect immunofluorescence
Term
what is the most sensitive indicator of EBV?
Definition
IgG
Term
most severe complication of herpes simplex infection
Definition
central nervous system involvement
Term
which herpes simplex virus most commonly causes oral lesions?
Definition
HSV-I
Term
which herpes simplex virus most commonly causes genital lesions?
Definition
HSV-II
Term
which herpes simplex virus may cause encephalitis?
Definition
HSV-I
Term
which herpes simplex virus may cause aseptic meningitis?
Definition
HSV-II
Term
Human herpes virus 5
Definition
cytomegalovirus
Term
most common serological testss for cytomegalovirus
Definition
ELISA and latex agglutination
Term
human herpes virus 3
Definition
varicella zoster virus
Term
causitive agent of chicken pox and shingles
Definition
varicella zoster virus
Term
how is varicella zoster virus transmitted?
Definition
inhalation of infected respiratory droplets or contact with skin lesions
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