Curs 7 Nematode

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Nematoda Wuchereria bancrofti Wuchereria bancrofti var. Pacifica Brugia malayi Filariozele limfatice

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Transcript of Curs 7 Nematode

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NematodaWuchereria bancrofti

Wuchereria bancrofti var. Pacifica

Brugia malayi

Filariozele limfatice

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1. Brugia malayi: extremitatile anterioara si posterioara. Este figurata teaca si cei doi nuclei terminali separati de coloana principala de nuclei.

1a. Brugia malayi; hematoxilina

1b. Brugia malayi; giemsa. In ambele coloratii apare teaca

2. Wuchereria bancrofti: extremitatile anterioara si posterioara. Apare figurata teaca. Nuclei nu sunt distribuiti pina in extremitatea posterioara a larvei.

2a. Wuchereria bancrofti; hematoxilina. Se observa teaca si distributia nucleilor.

2b. Wuchereria bancrofti; giemsa. Teaca nu este vizibila. In locul ei ramine o zona necolorata.

3. Loa Loa: extremitatile anterioara si posterioara. Apare figurata teaca. Nucleii terminali ajung pina in virful extremitatii posterioare.

3a. Loa Loa; hematoxilina. Teaca apare clar la ambele extremitati. Nucleii ajung pina in extremitatea posterioara care apare vizibil curbata.

3b. Loa Loa; giemsa. Teaca nu mai este vizibila. In locul ei apare un spatiu necolorat. Nucleii terminali sunt vizibili.

1 2 3

1a 1b

2a 2b

3a 3b

MICROFILARIILE DIN SINGE

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Manifestari clinice:

Procese inflamatorii (limfangite) superficiale, apoi profunde, adenopatii, abcese.

In fazele cronice apar procese obstructive: “elefantiazis” la nivelul membrelor, a organelor genitale externe, (epididimita, hidrocel), a sinilor, limforagii interne, (chilurie, limfurie, diaree chiloasa, chilotorax), sau externe.

Eozinofilie pulmonara tropicala

Reactii alergice locale si generale, reactii de hipersensibilitate.

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NematodaOnchocerca volvulus

Onchocercoza

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NematodaLoa Loa

LoaiozaEdemul de Kalabar

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NematodaDracunculus medinensis

Dracunculoza

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