Transcript Faculty of Allied Medical Sciences Parasitology

Faculty of Allied Medical
Sciences
Parasitology
(MLPR-201)
fall 2013/2014
Dr. Hamdy Badie M. El-Wakil
Prof. of Parasitology & Public Health .
Faculty of Allied Medical Sciences.
Pharos University In Alexandria,Egypt
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By the end of this lecturer students should
understand the classification, pathogenicity,
clinical importance and clinical features ,life
cycle of Nematodes .
2- Phylum : Nemathelminthes
Class : Nematodes
The nematodes (round worms) are elongated,
nonsegmented worms that are tapered at both ends.
Unlike other helminthes, nematodes have a complete
system, including a mouth, an intestine that spans most of
the body length and an anus. The body is protected by a
tough, noncellular cuticle. Most nematodes have separate,
anatomically distinctive sexes.
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The mode of transmission varies
widely, depending on the species, and
includes direct skin penetration by infections
larvae, ingestion of contaminated soil, eating
undercooked pork, and insect bites. The
parasites can invade almost any part of the
body:
liver,
kidneys,
intestines,
subcutaneous tissue, or eyes.
Generally, nematodes are categorized by
whether they infect the intestines as others tissues.
Alternatively, they can be divided into those, for
which the eggs are infectious, and those for which
the larvae are infections. The most worldwide
disease occurrence is ascariasis, caused by Ascaris
lumbricoide
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Phylum : Nemathelminthes (Round worms)
Class : Nematoda
Intestinal
infections
•Family :
- Trichuridae e.g
Trichuris trichiura (whip worm)
(Trichuriasis)
- Trichinellidae
Trichinella spiralis (Trichinosis)
Tissues infections
•Ascarididae
•Toxocara canis (Dog worm)
(Toxocariasis)
•Filariidae (Filarial worms)
•(Blood & Lymphatic)
•Loa loa (Loiasis)
•Wuchereria bancrofti
•Wuchereria malayi
•(Filariasis or Elphantiasis)
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Phylum : Nemathelminthes (Round worms)
Class : Nematoda
Intestinal
infections
•Strongylidae
•Strongyloides stercoralis
(Small round worm)
(Strongyloidiasis)
 Ancylostomidae
Ancylostoma duodenale
Necator americanus
(Old world and New world
hook worms)
(Hookworm diseases)
Tissues infections
•Dracunculidae
•- Dracunculus medinensis
(Guinea fire worm)
(Drancunculiasis)
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Phylum : Nemathelminthes (Round worms)
Class : Nematoda
Intestinal
infections
 Ascaridae
Tissues infections
- Ascaris lumbricoides
(Giant round worm)
(Ascariasis)
 Oxyuridae
- Enterobius vermicularis
(Entrobiasis) (Oxyuriasis)
Trichostrongylidae
- Trichostrongylus colubriformis
(Trichostrongyliasis)
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HOOKWORMS
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Classify Class : Nematoda ?
Draw the life cycle of Ascaris lumbricoides ,
illustrating the infective stage and diagnostic
stage ?
Group of students will be selected for an assignment
topic ,one of the parasites that are studied in your
course.
 The following points should be covered in your
assignment sheets:
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Name, Description,
( Morphological Characters in vivo)
,Geographic Distribution,
Habitat , Disease life cycle
‫عاطف سعيد السيد بغدادي‬
‫‪‬‬
‫عاطف كمال خميس علي خميس‬
‫‪‬‬
‫عبد الباري ابرهيم عبد الباري ابو حسين‬
‫‪‬‬
‫عبد الرحمن عوض حسين علي‬
‫‪‬‬
‫احمد سامح فاروق عبد العظيم عريبه‬
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‫محمد حمدي محمد عبد الشافي‬
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‫محمد عصام علي حسين علي‬
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‫خالد بهاء الدين محمود حسين‬
‫‪‬‬
‫عبد الفتاح محمد انور عبد الفتاح الرومي‬
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‫عبد هللا وجيه عبد الرؤوف احمد‬
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‫عزيزه حسين عبد الحافظ حسين‬
‫‪‬‬
‫عال حازم علي حسن‬
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