parasitology hemofragellae - slides
TRANSCRIPT
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ParasitologyHeamofragellaeJMJ
O Great St. Joseph of Cupertino who while on earth did obtain from God the grace to be asked at your examination only the questions you knew, obtain for me a like favors in the examinations for which I am now preparing. In return I promise to make you known and cause you to be invoked.
Through Christ our Lord.St. Joseph of Cupertino, Pray for us.
Amen.
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JMJ 2
LEICHMANIA
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Life Cycle
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Leichmania amastagote stage• Found within phagocytic vacuoles of
• macrophages and other mononuclear phagocytes.
• Size : 2-5um x 1-3um.
• Shape : Oval or rounded.
• Other features : Parasitic nuclei and kinetoplasts are arranged to give the “Dot and Dash” appearance.
• Demarcation of each amastigote is not apparent.
• No external flagellum.
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JMJ 5
Leichmania amastagote stage
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JMJ 6
Leichmania promastagote stage• Found both in midgut and pharynx of sandfly vector and in
culture media.
• Size : 15-20um in length, 1.5-4.0um in width.
• Shape : varies from pyriform to long slender spindle shape.
• Kinetoplast : Placed anterior to the nucleus.
• Flagellum : Arises at the anterior end.
• No undulating membrane.
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JMJ 7
Leichmania promastagote stage
Anterior Kinoplast
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JMJ 8
Leichmania promastagote stage
Anterior Kinoplast
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JMJ 9
Leichmania mucocutaneous lesion
Anterior Kinoplast
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JMJ 10
Leichmania cutaneous lesion
Anterior Kinoplast
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JMJ 11
TRYPANASOMABRUCI
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JMJ 12
Trypansoma bruci life cycle
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Trypamastagote stage
• Size : 15-35um x 1.5-4.0um.
• Shape : Fusiform protozoa, flattened from side to side.
• Pleomorphic with long and slender to short and stumpy forms.
• Tapering anterior end and blunt posterior end.
• Nucleus : Pleomorphic, varies with regard to size and position.
• Kinetoplast : Not prominent.
• Flagellum : Free flagellum, can vary in size.
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JMJ 14
Trypanasoma bruci
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JMJ 15
TRYPANASOMACRUCI
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JMJ 16
Trypansoma cruizi life cycle
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JMJ 17
Trypamastagote stage
• Size : 17-30um in length.
• Shape : Fusiform slender protozoa, flattened from side to side.
• Typically ‘C’ shaped.
• Tapering anterior end and short
• pointed posterior end.
• Nucleus : Deeply staining, centrally placed, oval shaped nucleus.
• Kinetoplast : Large and prominent. Situated at the posterior end (Terminal).
• Flagellum : Projects from the anterior end, after passing along the undulating membrane.
• Free flagellum about 1/3 rd of the body length.
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JMJ 18
Trypanasoma cruizi
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JMJ 19
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JMJ 20
HemofragellaeLeichmania Trypanasoma bruci Trypanasoma cruzie
AmastagotePromastagote
Epimastagote Trypamastagote
AmastagoteEpimastagoteTrypamastagote
Sand fly Tsetse fly Tryatominae bug
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JMJ 21
Hemofragellae
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JMJ 22