entamoeba histolytica
TRANSCRIPT
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PROTOZOA
• Phylum : Protozoa
• Class: Rhizopoda/Sarcodina
• Ordo: Amoeba
• Family: Entamoebidae
• Genus: Entamoeba
• Species: Entamoeba histolytica, Entamoeba coli, Entamoeba hartmanii
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Entamoeba histolytica
Bagian-bagian sel • Sitoplasma- ektoplasma
bergerak mengambil makanan (pseudopoda)ekskresirespirasipertahanan
- Endoplasmavakuola makananvakuola kontraktilbenda kromatoid
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• Inti sel
dinding inti
serabut inti
kariosom
butir-butir kromatin
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• Habitat: di colon (caecum), extraintestinal (hati, paru-paru, otak)
• Daur hidup: kista → metakista → trophozoit → prekista → kista dst
• Prekista: stadium peralihan dari trophozoit menjadi kista
• Metakista: stadium peralihan dari kista menjadi trophozoit
• Perkembangbiakan: belah pasang melalui stadium kista
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• Morfologi kista
ukuran 5-20 mikron
inti (matang) 4 buah
kariosom sentral dan kecil
butir kromatin halus dan rata
benda kromatoid seperti sosis
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Bentuk E. histolytica kista belum matang (2 nuclei)
Bentuk E. histolytica kista matang (4 nuclei)
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• Sifat kista
tahan dingin beberapa minggu
tahan air garam ≥ 12 hari
mati dengan pemanasan air 50°C, drying dan pembusukan
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• Morfologi trophozoitPseudopoda terarah, virulen (aktif), avirulen (kurang aktif)Ektoplasma tebal dan nyataEritrosit dalam plasma virulen (+), avirulen (-)Inti 1, struktur seperti kistaTrophozoid tidak tahan lama di luar tubuh manusia, merupakan stadium yang menimbulkan kerusakan pada jaringan dan menimbulkan gejala penyakit
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Trophozoit
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Siklus Hidup E. histolytica
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Amoebiasis
• Amoebic dysentri
• Extra intestinal amoebiasis
hepatitis amoebica
hepatic amoebic abses
pleuritis amoebica
• Amoeba (caecum, sigmoid, colon transversum, rectum)