Happy New Year! This week's case is by Idzi Potters and the Institute of Tropical Medicine Antwerp. The following were seen in an unfixed stool specimen at 400X original magnification. (Hint: maximize the size of the video for best viewing). Identification?
Based on the corkscrew motility in the first video, I would also suspect Chilomastix. Is the spiral motility common across the genus? If so, and (based on the video headers and nothing more) the stool is from a cow, the species could be C. caprae.
Happy New Year everyone, the elongated conical overall shape is compatible with that of Chilomastix mesnili trophozoite. When we further mganify the organism, we can see at times a whipping flagellum. Florida Fan
My best wishes for 2018 to all of you! May the upcoming year provide us with lots of exceptional parasites! ;-) About this case: Dr. Pritt always sets the headers as “COW#”, even though it is a human sample... so to clarify: this case is from a watery human feces... The size of the structures is 12-13 um, I’m sorry we forgot to mention this before... Kind regards! Idzi
Thank you for clarifying this Idzi. I should note that COW is just my abbreviation for Case of the Week. So there are no bovines involved!
A bit of history: My use of the term "COW" goes back to my days as a pathology resident where I was involved in the Pathology Interest Group (or PIG). We started a pathology COW, and therefore had a very animal-themed organization! I was involved in creating the weekly COW, and carried this into my days as a Clinical Microbiologist when I became the Director of the Clinical Parasitology lab at Mayo Clinic.
There isn't a species of Chilomastix pathogenic in cows, for those wondering. And anything that has the species name "caprae" would likely be a from a caprine host meaning a goat.
Giardia
ReplyDeleteChilomastix mesnilii trophozoites
ReplyDeleteThis "rotary" motion is a classic for Chilomastix mesnili troph.
ReplyDeleteThe rotary motion is obvious in the first video but not so in the second one.
ReplyDeleteIt is moving too fast , it is chilomastix
ReplyDeleteBased on the corkscrew motility in the first video, I would also suspect Chilomastix. Is the spiral motility common across the genus? If so, and (based on the video headers and nothing more) the stool is from a cow, the species could be C. caprae.
ReplyDeleteMancano le dimensioni! Comunque รจ un Flagellato
ReplyDeleteCarlo Varlani
Happy New Year everyone, the elongated conical overall shape is compatible with that of Chilomastix mesnili trophozoite. When we further mganify the organism, we can see at times a whipping flagellum.
ReplyDeleteFlorida Fan
Chilomastix mesnili motility is typical and morphology can be seen a little clear in second video
ReplyDeleteThis is Giardia Intestinalis trophozoites
ReplyDeleteThis is Pentatrichomonas hominis trophocyte
ReplyDeleteMy best wishes for 2018 to all of you!
ReplyDeleteMay the upcoming year provide us with lots of exceptional parasites! ;-)
About this case:
Dr. Pritt always sets the headers as “COW#”, even though it is a human sample... so to clarify: this case is from a watery human feces...
The size of the structures is 12-13 um, I’m sorry we forgot to mention this before...
Kind regards!
Idzi
Thank you for clarifying this Idzi. I should note that COW is just my abbreviation for Case of the Week. So there are no bovines involved!
ReplyDeleteA bit of history: My use of the term "COW" goes back to my days as a pathology resident where I was involved in the Pathology Interest Group (or PIG). We started a pathology COW, and therefore had a very animal-themed organization! I was involved in creating the weekly COW, and carried this into my days as a Clinical Microbiologist when I became the Director of the Clinical Parasitology lab at Mayo Clinic.
I apologize for any confusion! Bobbi
Haha that's fantastic. COW makes total sense now, but of course there had to be a bovine species of Chilomastix to make me outsmart myself.
ReplyDelete- Mark Fox
COWs and PIGs...
ReplyDeleteWonderful!!!
Thanks for the explanation Dr. Pritt!
:-)
Happy New Year everyone. I have doubts between Chilomastix mesnili and Pentatrichomonas hominis. I can't see clearly enough on my monitor.
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ReplyDeleteTrichomonas hominis
ReplyDeleteTrichomonas hominis
ReplyDeleteThere isn't a species of Chilomastix pathogenic in cows, for those wondering. And anything that has the species name "caprae" would likely be a from a caprine host meaning a goat.
ReplyDeleteThis comment has been removed by a blog administrator.
ReplyDelete