Shared Flashcard Set

Details

Microbiology
Viruses, Parasites, Fungi
62
Microbiology
Graduate
11/19/2012

Additional Microbiology Flashcards

 


 

Cards

Term
Histoplasmosis
Definition

Mississippi and Ohio River

 

Hides in Macrophages

 

History of contact with animals

 

AIDS-defining illness if systemic

 

Healthy people get pneumonia

Term
Blastomycosis
Definition

Northeast US

 

Granulomatous systemic illness

 

"Broad-based budding"

Term
Coccidioidomycosis
Definition

Southwest (Arizona etc)

 

Spherule with endospores in tissue, no yeast form

 

Valley Fever: pneumonia + meningitis with systemic spread

Term
Paracoccidioidomycosis
Definition

Rare but severe illness

 

Latin America

 

"captain's wheel" formation in histology

Term
Spirothrix
Definition

Rose-gardeners

 

Thermally dimorphic, cigar-shaped

 

Local ulcer + lymphadenitis

 

Treat with potassium iodide (KI)

Term
Tinea Versicolor
Definition

Malassezia furfur

 

damages melanocytes (hyper or hypopigmentation)

 

"Spaghetti and Meatball" on KOH prep

Term
Tinea skin infections
Definition

Pedis (athlete's foot)

cruris (groin)

corporis ("ringworm")

capitus (sebborhea dermatitis)

 

Microsporum, Trichophyton, Epidermophyton


Mold hyphae only

Term
Candida albicans
Definition

T-cells prevent local infection (Chronic Mucocutaneous candidiasis)

Neutrophils prevent hematogenous spread (Phagocyte immunodeficiencies)

 

Catalase +

 

Can cause diaper rash, endocarditis

 

See "germ tubes" in histology

 

 

Term
Aspergillus Fumigatus
Definition

Hyphae branch at acute angles

 

Catalase + (commonly seen in NADPH oxidase deficiency aka Chronic Granulomatous Disease)

 

Asthmatics: allergic brochopulmonary type

Fungus balls in old cavitary lesions

Disseminated disease in immunocompromised

 

Associated with HCC

 

 

Term
Cryptococcus neoformans
Definition

Inhaled-->blood-->meninges

 

Causes fungal meningitis in immunocompromised patients

 

Hevily encapsulated yeast on histology

 

Soap bubble lesions in brain

Term
Mucor and Rhizopus
Definition

Buds at right angles

 

Loves ketones/glucose: Patients in DKA

 

Brain abscess

Term
Pneumocystis Jirovici
Definition

Disk-shaped yeast on silver stain

 

AIDS ppx when CD4<200

 

Treat w dapsone, pentamidine, bactrim

Term
Giardia Lamblia
Definition

See either trophozoite or the cyst in stool

 

IgA deficiency prone to mucosal infection

Term
Entamoeba Histolytica
Definition

Bloody diarrhea and liver abscess

 

*Note, another liver asbcess is caused by the helminth "Echinococcus"

 

They eat RBCs

 

Treat w/ Flagyl or iodoquinol

Term
Cryptosporidium
Definition

AIDS-defining severe GI illness

 

Treat with nitazoxanide

 

Cysts on acid-fast stain

Term
Toxoplasma gondii
Definition

Brain abscess in HIV

 

(different than congenital infection)

 

Treat with sulfadiazine and pyrimethamine

Term
Naegleria Fowleri
Definition

Ameoba in water causes fatal CNS disease

 

hail mary = amphotericin

Term

Trypanosoma

 

brucei

gambiense

rhodesiene

Definition

African Sleeping Sickness after painful Tsetse fly bite

 

Can rearrange genome to evade host defense

 

Treat blood-borne: Suramin

Treat CNS: Melasoprol

 

 

Term
Plasmodium Falciparum and Malariae
Definition

Falc= severe w/ irregular fever cycles

Mala= 72-hr fever cycles

 

Treat with chloroquine (first-line) and mefloquine (second-line)

 

See RBC schizont with merozoites

Term
Plasmodium Vivax and Ovale
Definition

48-hr fever cycles

 

Treat dormant form in liver with primaquine

 

See RBC schizont with merozoites

Term
Babesia
Definition

Ixodes tick transmits it and Lyme

 

Babosiosis symptoms are fever and hemolytic anemia

 

See ring or maltese cross on histology

 

Treat with quinine or clindamycin

Term
Trypanosoma cruzi
Definition

Chaga's disease is cardiomyopathy + mega (colon, esophagus)

 

Reduviid kissing bug transmits

 

treat with nifurtimox

Term
leishmania donovani
Definition

#2 most common parasitic illness worldwide, causes a visceral infection called

"kala-azar": cyclic fevers, HSM, pancytopenia

 

speckled macrophages

 

Treat with sodium stibogluconate

 

 

Term
Enterobius vermicularis
Definition

anal pruritis, pinworm

 

pyrantel pamoate or -bend-

Term
Ascaris lumbricoides
Definition

giant roundworm with giant eggs in feces

 

Treat with pyrantel pamoate or -bend-

Term
Trichinella spiralis
Definition

ingested roundworm

 

Muscle inflammation and periobital edema

 

Treat with -bend-

Term
Strongyloides stercoralis
Definition

skin-->intestine

vomiting, diarrhea, anemia

 

Treat w ivermectin or -bend-

Term
Ancylostoma duodenale, Nectator americanus
Definition

Skin-->intestines

 

GI blood suckers

 

Treat w pyrantel pamoate or -bend-

Term
Dracunculus medinensis
Definition

Drinking water-->skin

 

treat with niridazole or prolonged extraction

Term
Onchocerca Volvulus
Definition

River Blindness

 

Blackflies, black skin nodules, black sight

 

Treat with rIVERmectin

Term
Loa loa
Definition

Worm transmitted by fly, crawls in your eye

 

Diethylcarbamazine

Term
Wuchereria Bancrofti
Definition

Mosquito

 

Elephantitis (lymph blockage)

 

Diethylcarbamazine

Term
Toxocara Canis
Definition

Food-->Tissues

 

Granulomas and "viscera larva migrans"

 

Diethylcarbamazine

Term
Taenia solium
Definition

Also causes a GI infection (intestinal tapeworm)

 

Treat w praziquantel

 

Treat neurocysticercosis w/ -bend-

Term
Diphyllobothrium latum
Definition

Raw fish

 

B12 deficiency

 

Treat w praziquantel

Term
Echinococcus granulosus
Definition

Rapidly growing liver cyst in immigrants 

 

*Note: other liver cyst from protozoa entamoeba hystolytica

 

Surgeon must inject ethanol to prevent anaphylaxis

 

Treat w -bend-

Term
Schistosoma
Definition

Granulomas and fibrosis of liver and spleen


S. haematobium: bladder cancer


Treat w praziquantel

Term
Clonorchis sinensis
Definition

Undercooked fish

 

Biliary diseases

 

Treat w praziquantel

Term
Paragonimus Westermani
Definition

undercooked crab

 

hemoptysis

 

Treat w praziquantel

Term
Herpes Virus
Definition

Gingivostomatosis HSV1

 

EBV heterophile antibody test, infects B-cells but see abnormal reacting T-cell on histology, can lead to nasopharygeal cancer

 

CMV pneumonia in immunocompromised

Kaposi's is sexually transmitted

 

Tsanck smear of vesicle: intranuclear inclusions in keratinocytes and multinulceated ginat cells

 

Exception to rule: All envelopes are acquired from the cell membrane (it is acquired in herpes from nuclear membrane)

 

 

Term
Hepadnavirus
Definition

Hep B virus

 

Enveloped

 

Exception to: "All DNA viruses are linear" (partial circular DNA)

 

Exception to "All dsDNA viruses have infectious naked genome"

 

has reverse transcriptase

Term
Adenovirus
Definition

Viral hemorrhagic UTI, viral pharyngitis, viral pneumonia, viral conjunctivitis

 

Protoypic DNA virus: dsDNA linear icosehedral nuclear-replicating virus w infectious naked genome

Term
Parvovirus B19
Definition

Exception to: "All DNA viruses are dsDNA" (-ssDNA)

 

Sickle cell crisis, other adults can get RBC aplasia and RA-like features

Term
Papillomavirus
Definition

warts also from HPV 1, 2

 

Exception to: "All DNA viruses are linear" (circular)

Term
Polyoma Virus
Definition

Exception to: "All DNA viruses are linear" (circular)

 

JC virus invades oligodendrocytes and causes PML

BK virus in transplanted organs

Term
Poxvirus
Definition

Enveloped, large

 

Exception to: "All DNA viruses are icosehedral.." (it's complex), "...replicate in nucleus..." (replicates in cytoplasm).

 

Exception to "All dsDNA viruses have infectious naked genome"

 

Molluscum contagiosum and "vaccinia/cowpox/milkmaid blisters"

Term
Reovirus
Definition

Coltivirus-colorado tick fever

Rotavius- diarrhea

 

Exception to: "All RNA viruses are ssRNA (its dsRNA), have envelopes (its naked) and are one piece (its segmented genome)"

Term
Picornavirus
Definition

Enteroviruses (except rhino "common cold") can cause viral meningitis (except Hep A)

 

Exception to "All RNA viruses have envelopes"

 

Polio, Hep A, Echovirus, Coxsackie, Rhinovirus

Term
Hepevirus
Definition

HepEvirus

 

Waterborne epidemics

 

High mortality in pregnant women

 

Exception to: "All RNA viruses have envelopes"

Term
calcivirus
Definition

Exception to "all RNA viruses have envelopes"

 

Norwalk viral gastroenteritis

Term
Flavivirus
Definition

Hepatitis C virus + arboviruses

 

yellow fever, Dengue, West Nile, St Louis encephalitis

Term
Togavirus
Definition

Rubella + equine enchephalitis

 

RNA virus

Term
Retrovirus
Definition

Exception to: "All viruses are haploid" (it has 2 copies of ssRNA)

 

Exception to: "All RNA viruses replicate in the cytoplasm" (it replicates in the nucleus)

 

HIV is exception to: "All +ssRNA viruses have icosohedral capsid" (its capsid is conical and complex)

 

Also HTLV T-cell lymphoma

 

Term
Coronavirus
Definition

common cold and SARS

 

Exception to: "All +ssRNA viruses have icosohedral capsid" (its helical)

Term
Orthomyxovirus
Definition

Influenza -ssRNA

 

Exception to: "All RNA virus have one-piece genome" (it's segmented) and replicate in the cytosol (it replicates in nucleus)

 

Contains neuraminidase and hemaglutinin

 

Vaccine: increase circulating antibodies to hemaglutinin promotes humoral immunity

 

Patients at risk for fatal bacterial superinfection

Term
paramyxovirus
Definition

croup aka parainfluenza, RSV, measles, mumps

 

Contains Fusion Protein that makes respiratory epithelial cells fuse and form miltinucleated giant cells

 

RSV: treat w ribavirin, ppx w pavilucimab (F-protein Ig)

Term
Rhabdovirus
Definition

Rabies (#1 is skunk)

 

ssRNA virus migrate in axon retrograde and invade Purkinje cerebellar cells

 

long incubation period

Term
Filovirus
Definition

Ebola and Marburg

-ssRNA

Term
Arenavirus
Definition

Exception to "All RNA viruses are linear (its circular) and one-piece (its segmented).

 

lymphocytic choriomeningitis virus

lassa fever encephalitis spread by mice

Term
Bunyavirus
Definition

Hantavirus: hemorrhagic fever and pneumonia

 

Arboviruses: Sandfly/Rift Valley fevers, Crimean Congo hemoorhagic fever, california encephalitis 

 

Exception to "All RNA viruses are linear (its circular) and one-piece (its segmented).

Term
Deltavirus
Definition

Hepatitis D

 

Exception to "All RNA viruses are linear" (its circular)

Supporting users have an ad free experience!