Sheet3-表格 1 Flashcards
What disesase does Trichomonas Vaginalis cause?
Vaginitis: foul-smelling, greenish discharge; itching and burning
What do you tx P. Carinii with?
TMP-SMZ, or pentamidine, or dapsone
What do you use to culture cryptococcus?
Sabouraud’s Agar
What do you use to Diagnose E. Histolytica?
Serology and/or trophozoites or cysts in stool
What do you use to stain Cryptococcus?
India Ink
What do you use to tx cryptosporidium?
nothing
What do you use to Tx Giardiasis?
Metronidazole
What do you use to tx T. Vaginalis?
Metronidazole
What do you used to dx P. Carinii?
Lung biopsy or lavage, methenamine silver stain
What do you used to Tx Candida Albicans?
Nystatin for superficial infection, Amphotericin B for systemic
What does Alba mean?
white
What does dimorphic mean?
fungi that are mold in the soil (low temp) and yeast in tissue (higher/body temp 37 C)
What is diagnostic for L. donovani?
Macrophages containing amastigotes
What is diagnostic of T. Vaginalis?
Trophozoites on wet mount
What is histoplasmosis associated with?
bird or bat droppings
What is the progression of S. Schenckii infection?
traumatic introduction into the skin, typically by a thorn (‘rose gardner’s’ disease) , causes local pustule or ulcer with nodules along draining lymphatics (ascending lymphangitis) . Little systemic illness.
What is the vector for L. donovani?
Sandfly
What is the vector for T. Cruzii?
Reduviid Bug
What is the vector for T. Gambiense and Rhodesiense?
Tsetse fly
What is used to dx African sleeping sickness?
Blood smear
What is used to dx T. Cruzii?
blood smear
What is used to dx toxoplasma?
serology and biopsy
What is used to treat D. Medinensis?
Niridazole
What is used to Treat E. Histolytica?
Metronidazole and Iodoquinol
What is used to tx african sleeping sickness?
Suramin for bloodborne disease or melaroprol for CNS penetration
What is used to tx Ancylostoma duodenale?
Mebendazole/pyrantel pamoate
What is used to tx Ascaris Lumbricoides?
Mebendazole/pyrantel pamoate
What is used to tx Clonorhis sinensis?
Praziquantel
What is used to tx E. Granulosus?
Albendazole
hug my baby~
kiss u~
What is used to tx E. Vermicularis?
Mebendazole/pyrantel pamoate
What is used to tx L. Donovani?
Sodium Stibogluconate
What is used to tx Loa loa?
diethylcarbamazine
What is used to tx malaria?
Chloroquine ( primaquine for vivax, ovale) , sulfadoxine + pyrimethamine, mefloquine,
quinine
What is used to tx O. Volvulus?
Ivermectin
What is used to tx Paragonimus Wetermani?
Praziquantel
What is used to tx S. Stercoralis?
Ivermectin/thiabendazole
What is used to tx schistosoma?
Praziquantel
What is used to tx T. Canis?
diethylcarbamazine
What is used to tx T. Cruzii?
Nifurtimox
What is used to tx T. Spiralis?
Thiabendazole
What is used to tx taenia solium infection?
Praziquantel/niclosamide; albendazole for cysticercosis
What is used to tx toxoplasma?
sulfadiazine + pyrimethamine
What is used to tx W. Bancrofti?
diethylcarbamazine
What patient population is susceptible to Mucor disease?
Ketoacidotic patients and Leukemic patients
What stain do you use for lung tissue when you are detecting P. Carinii?
silver
What state predisposes you to P. Carinii infection?
Immunosuppression
What test can be used to detect polysaccharide capsular antigen of Cryptococcus?
latex agglutination test
What types of infections can Candida Albicans cause?
systemic or superficial fungal in fections
When do you start prophylaxis in HIV patients?
when the CD4 drops below 200 cells/mL
Where do the mucor and rhizopus species fungi proliferate?
in the walls of blood vessels and cause infarction of distal tissue
Where is Blastomycosis endemic?
States east of the Mississippi River and Central America
Where is Coccidioidomycosis endemic?
SWUS, California (San Joaquin Valley or destert (desert bumps) ‘Valley fever’)
Where is Histoplasmosis endemic?
Mississippi and Ohio River valleys
Where is Paracoccioidomycosis endemic?
Rural Latin America
All viruses are haploid except _________?(1)
Retroviruses, which have two identical ssRNA molecules (diploid).
Bites from what 3 animals are more prone to rabies infection than a bite from a dog?
Bat, Raccoon, and Skunk
Define complementation?
When one of 2 viruses that infects the cell has a mutation that results in a nonfunctional protein. The nonmutated virus ‘complements’ the mutated one by making a functional protein that serves both viruses.
Define genetic drift.
Minor changes based on random mutations.
Define genetic shift.
Reassorment of viral genome (such as when human flu A virus recombines with swine flu A virus.)
Define phenotypic mixing?
When virus A acquires virus B coat proteins and acts like virus B but its progeny will
have virus A genome and coat.
Define reassortment?
- When viruses with segmented genomes (eg. infl uenza virus) exchange segments.
- High frequency recombination. Cause of worldwide pandemics.
Define recombination?
Exchange of genes between 2 chromosomes by crossing over within regions of significant base sequence homology.
Describe its incubation period and whether or not it has a carrier.
- Short incubation period (3 weeks)
- No carriers
Describe its incubation period and whether or not it has a carrier.
- Long incubation (3 months)
- has carriers
Describe the general concept of bacterial super infection which can occur with
influenza infection? S
A life-threatening illness where a bacterial infection is superimposed on an existing
viral infection.
Describe the genetic and physical properties of influenza virus?
- Enveloped
- ssRNA virus with segmented genome
- prone to genetic changes
Describe the migration of rabies within the CNS.
It migrates in a retrograde fashion within the CNS up n. axons.
Describe the physical shape and duration of incubation for rabies.
- Bullet-shaped capsid (illus. in book)
- long incubation period (wks. - 3 months)
Describe the technique and purpose for performing a Tzanck test?
- assay for herpes
- make a smear of an opened skin vesicle to detect multinucleated giant cells
Describe whether or not it has a carrier.
has carriers
Does HDV have carriers?
Yes
Explain the concept of a slow virus infection.
Virus exists in patient for months to years before it manifests as clinical disease.
From the following selection which classes are considered infectious and which aren’t:
dsDNA, ds RNA, (-)ssRNA, (+) ssRNA.
- Infectious: dsDNA (except poxviruses and HBV) and (+) ssRNA
- Noninfectious: dsRNA and (-) ssRNA
HCV is a common form of hepatitis in what US population?
IV drug users
How does a Monospot test work?
It detects heterophil antibodies by agglutination to sheep RBC’s
How is RNA translated and processed in picornaviruses?
RNA is translated into one long polypeptide that is cleaved by proteases into many small proteins.
How many segments and what sense is the RNA genome of influenza viruses?
- 8 segments
- negative sense
How many serotypes do paramyxoviruses have except parainfluenza which has ___?
- 1 - 4
Into what class RNA or DNA to all segmented viruses fall?
RNA