Microbiology - Not in Picmonic Flashcards
Aside from Burkitt lymphoma, Nasopharyngeal carcinoma and mononucleosis, what other disorder is associated with EBV?
Hodgkin Lymphoma
What type of atypical lymphocyte is associated with EBV mononucleosis?
Reactive cytotoxic T-cells
How is CMV transmitted?
Congenitally and by transfusion, sexual contact, saliva, urine, and transplant
Which HHV causes Kaposi sarcoma?
HHV8
Describe the appearance of Kaposi sarcoma
Dark/violaceous flat and nodular skin lesions representing endothelial growths - can also affect GI tract and lungs
What Reovirus causes Colorado tick fever? What is another classification of this virus?
Coltivirus - An arbovirus because transmitted by arthropods
All RNA viruses are single stranded except _______
Reoviruses
What is the name of the polio vaccine?
Polio-Salk/Sabin vaccine
What ions have decreased absorption in rotavirus?
Decreased absorption of Na+ and loss of K+
HEV and HDV are part of which virus families?
HEV: Hepevirus (non-enveloped, positive sense linear icosahedral)
HDV: Delta virus (enveloped, negative sense circular)
What viral family is Norovirus and what does it cause?
Caliciviruses - viral gastroenteritis (cruise ships + watery diarrhea)
What diseases/viruses are associated with flaviviruses?
HCV, Yellow fever, Dengue (arbovirus), St. Louis encephalitis (arbovirus), and West Nile virus (Arbovirus)
What togaviruses are also arboviruses?
Eastern equine encephalitis and Western equine encephalitis
Hairy Leukoplakia in association with HIV CD
EBV
What are the two retroviruses and what is the disease associated with each?
HTLV - T-cell leukemia
HIV - AIDS
What helical virus causes the common cold and SARS?
Coronavirus
What are the 3 C’s of Measles?
Cough
Coryza
Conjunctivitis
What types of spots and rashes are seen in measles?
Koplik spots: bright red spots with blue-white center on buccal mucosa (precedes rash)
Rash: descending maculopapular rash
What protein in paramyxoviruses causes respiratory epithelial cells to fuse and form multinucleated cells?
Surface F (fusion) protein
What family of viruses causes Ebola?
Filoviruses
What viruses come from the arenavirus family and how is their RNA structure organized?
LCMV (lymphocytic choriomeningitis virus) and Lassa fever encephalitis (spread by mice)
RNS structure: SS(-) circular with 2 segments
What diseases come from the bunyavirus family and how is their RNA structure organized?
California encephalitis (arbovirus)
Sandfly/Rift valley fevers (arbovirus)
Crimean-Congo hemorrhagic fever (arbovirus)
Hantavirus - hemorrhagic fever, pneumonia
In HIV describe the functions of the following proteins…
env (gp120 and gp41):
gag (p24):
pol:
env - gp120: attachment to host CD4+ t-cell - gp41: fusion and entry gag (p24): capsid protein pol: reverse transcriptase, aspartate protease, integrase
What are the three forms or prion disease?
Sporadic: Creutzfeldt Jakob disease - rapidly progressive dementia
Inherited: Gerstmann-Straussler-Scheinker
Acquired: Kuru
How are Bacterial, Fungal, and Viral meningitis differentiated?
Bacterial: Decreased sugar and increased PMNs
Fungal/TB: Decreased sugar and increased lymphocytes
Viral: Normal sugar and Increased Lymphocytes
What treatments are associated with the different presentations of Candida?
Vaginal:
Oral/esophageal:
Systemic:
Vaginal: topical azole
Oral/esophageal: Fluconazole or capsofungin
Systemic: Amphotericin B or capsofungin
What type of carcinoma is associated with the aflatoxins from aspergillus?
Hepatocellular carcinoma
What agar is used to culture Cryptococcus?
Sabouraud agar
What is the treatment for mucor and rhizopus?
Amphotericin B
Aside from TMP-SMX, what else can used to treat pneumocystis jirovecii?
Pentamidine, Dapsone, Atovaquone
What is the function of gram negative ENDOTOXINS (that is a hint)
Edema Nitric Oxide DIC/death Outer membrane TNF-alpha O-Antigen Xtremely heat stable IL-1 Neutrophil chemotaxis
What is the toxoplasmosis “classic triad”
Chorioretinitis
Hydrocephalus
Intracranial calcifications
How is babesia treated?
Atovaquone + Azithromycin
Shigella invades the GI mucosa by first gaining access to __ cells in ______ __________ through endocytosis
M cells in Peyer’s patches