Specific Learning Objectives Lecture 10 Blood and Tissue Nematodes Part 2

Biomedical Lab Diagnostics 450 with Hoag at Michigan State University

About this deck

By: David Westphal
Textbook:

Essentials of Human Parasitology
Created: 2012-02-27
Size: 34 flashcards
Views: 14

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Burgia malayi pathology

Elephantiasis in the legs

Burgia malayi specimen

blood

Burgia malayi diagnotic form

sheathed worm 200-275 um in length

Body nuclei extend to the tip of tail

2 terminal nuclei may be seen separated from the other tail nuclei at the tip

Burgia malayi vector

mosquito

Burgia malayi treatment

diethylcarbamazine-induces allergic rxn in persons heavily infected and should be used in conjugation w/ corticosteroids

Ivermectin has been shown to be effective microfilaricide for up to 6 months.

loa loa pathology

calabar swelling- localized painful itchy swelling on extremities about the size of a golf ball that last 1-3 days.

loa loa specimen

blood

loa loa diagnostic form

worm in eye (male=20-35 mm long by .5 mm wide, female= 50-70 mm long)

microfilariae:

sheathered

200-300 um long

body nuclei are continuous ti the tip of the tail

loa loa vector

Mango fly (Chrysops)

loa loa common name

African eye worm

loa loa diagnosis

hypereosinophilia, hyper IgE in serum, increased antifilarial antibodies

diurnal, blood samples should be collected b/t 10 am and 2 pm.

Brugia malayi endemic area

Asia, especially southern China and India, as well as Phillipines, Thailand, Vietnam, South Korea, and parts of Japan.

Onchocerca volvulus pathology

microfilariae migrate from ochoceroma through skin, eyes and lymph nodes causing an allergic rxn

Onchocerca volvulus specimen

skin snip of ochocercoma swelling for observation of the worm

Onchocerca volvulus diagnostic form

elevated IgE in blood

female= 50 cm by .5 cm

male= 5 cm by .5 cm

Onchocerca volvulus infective form

larvae

Onchocerca volvulus vector

blackfly (Simulium)

Onchocerca volvulus pathogenicity

pathogenic

Onchocerca volvulus common disease name

River Blindness

Onchocerca volvulus treatment

Ivermectin

surgical excision of adult worms from nodules is recommended to eliminate female and hlt microfilaria production.

Mansonella ozzardi & perstans pathology

adult worms live in body cavities &/or visceral fat

Microfilariae in blood, aymptomatic

Mansonella specimen

tissue biopsy or blood

Mansonella vector

tiny midge Culicoides spp.

Mansonella streptocerca pathology

adult worm lives in dermis just below skin & Streptocerciasis must be differentiated from onchocerciasis

microfilariae unsheathed and have sheapered's crock tail

Dirofilaria immitis pathology

Dog heartworm rarely causes accidental zoonosis in humans

worms do not grow to maturity, so microfilariae are not produced

migrate to lung and cause well-defined coin lesions, may lead to persistent cough, chest discomfort & coughing up blood

Dirofilaria immitis transmission and treatment

transmitted by mosquito

treat by surgical removal

About this deck

By: David Westphal
Textbook:

Essentials of Human Parasitology
Created: 2012-02-27
Size: 34 flashcards
Views: 14

About StudyBlue

“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy