Download - Lab_RS_MD3_Parasite_I.pdf
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รศ.ดร.สมชาย ป่ินละออ ภาควชิาปรสติวทิยา คณะแพทยศาสตร ์มหาวทิยาลยัขอนแกน่ Tel. 043-348387, 3434 E-mail [email protected]
Demonstration of parasitic
infection involved in the respiratory system
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Parasitic infection in respiratory system
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Objectives
Pneumocystis jiroveci
Paragonimus heterotremus
Hydatid cyst of Echinococcus
Egg of:
- Ascaris lumbricoides
Larva of:
- Hookworm
- Strongyloides stercoralis
- Toxocara
เพื่อให้นักศกึษาอธิบายได้เก่ียวกับรูปร่างลักษณะของปรสิตที่เกี่ยวข้องกับระบบหายใจ
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Life cycle of Pneumocystis jireveci
Bogitsh BJ et al, 2005: p162
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toluidine blue
Pneumocystis jiroveci Disease: PCP, Pneumocystis jiroveci pneumonia or
Pneumocystis pneumonia
Cyst 4-8 um
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- ระยะ cyst ในน ้ำล้ำงถงุลมปอด ย้อมด้วยสี Gomeri methenamine silver (GMS) - พบเช้ืออยู่รวมกนัเป็นกลุ่มๆ ผนังซีสตติ์ดสีเทำ หรือด ำ - ซีสตร์ปูร่ำงกลม บำงซีสตอ์ำจเห่ียวย่น หรือ รปูพระจนัทรเ์ส้ียว - ภำยในไม่ติดสี intracystic body
Pneumocystis jiroveci
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Morphology of Pneumocystis jireveci
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Morphology of Pneumocystis jireveci
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- ระยะ cyst ในน ้ำล้ำงถงุลมปอด (bronchoalveolar larvage, BAL) ย้อมสี Giemsa - พบเช้ืออยู่รวมกนัเป็นกลุ่มๆ ผนังซีสตไ์ม่ติดสี - ซีสตร์ปูรำ่งกลม ใส ขนำด 4-8 ไมโครเมตร - ภำยในติดสีม่วงเข้มของ intracystic bodies ขนำดเลก็ๆ จ ำนวน 1-8 เมด็
Pneumocystis jiroveci
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Pathogenesis of PCP
Fibrosis in septal walls
H&E staining of lung
biopsy or section
Bilateral-diffused
Radiography by X-ray
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วงจรชวีติ Paragonimus spp.
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Paragonimus spp. Disease: Pulmonary paragonimiasis
Extrapulmonary paragonimiasis
P. heterotremus P. westermani
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2 mm
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Paragonimus spp. egg
P. heterotremus P. westermani
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เสมหะ+ NaOH
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Pulmonary paragonimiasis
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CT scan of a patient with paragonimiasis shows
bilateral pleural effusions and thickening of the left pleura with possible cystic change (arrow).
Chest roentgenogram of a patient with
paragonimiasis shows bilateral pleural
effusions and an infiltrate in the lower lobe of the left lung (arrow).
Pulmonary paragonimiasis
Clinical Microbiology Reviews, July 2009, p. 415-446, Vol. 22, No. 3
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Pulmonary paragonimiasis
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Extrapulmonary paragonimiasis
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Life cycle of Echinococus spp.
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Echinococcus spp.
Species Disease Host IH E. granulosus cystic echinococcosis or
unilocular hydatidosis
dog herbivores
E. multilocularis alveolar or multilocular
echinococcosis
fox rodent
E. vogeli & E. Oligarthrus
Polycystic echinococcosis
sylvatic animal
rodent
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Morphology of Echinococcus spp.
E. granulosus E. multilocularis E. vogeli
E. oligarthrus
E. granulosus
E. multilocularis
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Hydatid cyst of E. granulosus
Hydatid sand
Protoscolices
Brood capsule
Germinal layes
Laminated membrane Laminated membrane
Germinal layes
Protoscolices
Brood capsule
Neva FA, & Brown HW, 1994
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Hydatid capsule, inner surface, isolated from lung of a Korean woman
inner surface,
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Hydatid sand in human lung H&E, X100
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A section of human lung shows multiple protoscoleces
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Chest P-A. Hydatid cysts in human lung. Two mass shadows are indicated by arrows.
CT finding of hydatid cyst in human lung shows a distinct cyst wall and a clear fluid in the cyst .
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Larva & Egg of Nematode
Ascaris lumbricoides
Hookworm
Strongyloides stercoralis
Toxocara
Disease: Pneumonitis Löffler's syndrome (Eosinophilic pneumonia)
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Ascaris lumbricoides Disease: Ascariasis Ascaris pneumonitis
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Ascaris pneumonitis
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Pulmonary ascariasis from larval migration of A. lumbricoides
10-30 cm in length
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Ascaris pneumonitis
Löffler's syndrome (Eosinophilic pneumonia)
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Ascaris lumbricoides egg in stool
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Charcot-Leyden crystal
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Necator americanus & Ancylostoma duodenale
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Life cycle of
Necator americanus & Ancylostoma duodenale
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Filariform larva of hookworm
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Life cycle of Strongyloides stercoralis
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Life cycle of Strongyloides stercoralis
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cervical alae
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http://www.dpd.cdc.gov/dpdx/html/imagelibrary/Toxocariasis_il.htm
Toxocara canis larva
anterior
posterior
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Objectives
Pneumocystis jiroveci
Paragonimus heterotremus
Hydatid cyst of Echinococcus
Larva of:
- Ascaris lumbricoides
- Hookworm
- Strongyloides stercoralis
- Toxocara
เพื่อให้นักศกึษาอธิบายได้เก่ียวกับรูปร่างลักษณะของปรสิตที่เกี่ยวข้องกับระบบหายใจ
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Lab performance
1. Demonstrate
- 4 sets / Lab
2. Group Discussion
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References
• Wilkin A and Feinberg J. Pneumocystis carinii pneumonia: a clinical
review. Am Fam Phys 1999;60:1699-1714.
• John G Bartlett and Stefano Vella. Textbook-Atlast of Intestinal Infections
in AIDS
• Medrano FJ et al. "Pneumocystis jirovecii in General Population". Emerg
Infect Dis 2005; 11 (2): 245–250
• Wazir JF, Ansari NA. Pneumocystis carinii infection. Update and review.
Arch Pathol Lab Med 2004; 128:1023-7.
• Markell EK et al. Medical Parasitology. 1999
• www.google.co.th(search image under scientific name/life cycle)
• www.google.co.th (search under scientific name/lecture, power point or
review)
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• The past is gone.
• The future is unpredictable.
• All we have is now.
• Make great use of it.
Thank you for your attention