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BALANTIDIUM COLI, Balantidium_LifeCycle_lg , ad9c19e4f31fc3dfa1eb30e1643…
BALANTIDIUM COLI
MORPHOLOGY
●Discovered by Malmsten in 1857
●Largest Intestinal Protozoal Parasite
●Natural host - Pigs
●Pear shaped/Oval shaped
●Propelling motility
●Habitat- Intestinal regions
TROPHOZOITE
●Anterior pointed Posterior boarder
●60 in length, 45 micrometer in width
●Cytostome-Mouth
●Cytopharynx-Sac like cavity
●Cytopyge-Anal opening
●Adoral cilia-The cilia in anterior region
●Three structures in Cytoplasm
•Nucleus
•Contractile vacuole
•Food vacuole
𝘾𝙮𝙨𝙩
•Shape:Oval or Round
•Cyst wall- double layered covering and transparent
• Cilia is contracted during cyst formation
•Nucleus
°macronucleus
°micronucleus
•It has contractile vacuoles
•It is the infective form
•40-60 micro metre in diameter
LIFE CYCLE
●Pig - Natural host
●Human - Accidental host
●Has 4 different routes
of transmission
•Pig-------->Pig
•Man------>Man
•Pig-------->Man
•Man------->Pig
●Feacal or oral routes
●Single Cyst
EXCYSTATION----->Single Trophozoite
●Transverse binary fission
●Also Conjugation occurs
●Forms ENCYSTATION in stools(Cyst)
PATHOGENESIS
-Mostly harmless
-Intestinal ulcers in rare cases
-Affects lymph nodes in 1% of cases,called Lymph adenopathy
-Adenopathy is enlargement of lymph nodes
-Symptoms:
•Nausea
•Vomiting
•Diarrhoea
•Dysentric stool
LABORATORY DIAGNOSIS
Stool sample
Microscopy :
☆ wet mount
☆ Iodine mount -trophozoite form brown color
Staining :
☆ Eosin
☆ Hematoxylin
Culture :
☆ Polyxenic media
☆ Diphasic media
Biopsy :
☆ Biopsy samples
Molecular :
☆ PCR
☆ ELISA
☆ Antibody testing method
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