Monday, July 29, 2013

Answer to Case 267

Answer:  Giardia duodenalis (aka. G. lamblia, G. intestinalis)

This video shows the characteristic "falling leaf" motility of Giardia.  I really like how you can see the shape of the trophozoite in this video.  Note in the still shots below that is somewhat flattened laterally and therefore looks like a leaf.  It helps explain the pattern of motility that we see.

It is only when the troph turns to show its ventral-dorsal aspect that we see the classic piriform (pear) or 'kite' shape of the trophozoite:

And now our poem from Blaine Mathison!

Giardiasis has often been referred to as Beaver Fever
Not to be confused with the phenomenon about a certain singer
And this parasite has much better dancing moves
as it winds through your lumen to a flagellar groove
And with no annoying ‘pooparazzi’ life couldn’t be sweeter!

(For those of you who aren't up on the latest pop culture [like me], Blaine is referring to Justin Bieber and the bewildering phenomenon of Bieber Fever - yes folks, that really is a thing)


Alex said...

That is a nice video and a different way to see it...

Salbrent said...

Giardia lamblia trophozoite (others use different species names) from a wet mount showing falling leaf motility

Rohmat Noer Fajril said...

wihh nice info saya pengunjung setia web anda
kunjung balik, di web kami banyak penawaran dan tips tentang kesehatan
Ada artikel menarik tentang obat tradisional yang mampu menyembuhkan penyakit berat, cek yuk
Pengobatan askariasis