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Trypanosomes

trypanosome stage --> trypomastigote

term to replace the older term, trypanosome stage, which was often confused with the flagellate genus trypanosoma. It denotes the stage (infective stage for south American trypanosomiasis and african trypanosomiasis, and the only stage found in man in the latter illness) in which the flagellum arises from a posteriorly located kinetoplast and emerges from the side of the body, with an undulating membrane running along the length of the body.

Origin: G. Trypanon, auger, _ mastix, whip


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prediction the coding sequence

... reading frames. antibody genes also mutate their V regions, and switch their downstream tail in a genomic equivalent of mRNA splicing. Similarly, trypanosomes shuffle their DNA around to produce novelty within their protein coats. Finally viruses , particularly RNA viruses such as HIV, undergo ...

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by merv
Sun Oct 02, 2011 5:42 pm
 
Forum: Bioinformatics
Topic: prediction the coding sequence
Replies: 2
Views: 2839

Advantages of unicellular organisms over multi-cellular?

... advantages here, like not having to expend the energy of finding a mate. What you mentioned before about their samll size and being a protist... Trypanosomes and apicomplexans that cause african sleeping sickness and malaria, respectively, are parasites. If they were much larger, they may not ...

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by plasmodesmata11
Sun Jan 31, 2010 11:11 pm
 
Forum: Cell Biology
Topic: Advantages of unicellular organisms over multi-cellular?
Replies: 3
Views: 12384

Re: Human immune system response to trypanosomes

I may be wrong on this, but my recollection is that the surface markers shift across the population over time, rather than as a response to antibodies - each wave of antibodies removes the "old marker" individuals, but it takes time to make ones for the new markers, and then newer ones hav...

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by Darby
Thu Apr 17, 2008 11:39 pm
 
Forum: Microbiology
Topic: Human immune system response to trypanosomes
Replies: 2
Views: 2618

Human immune system response to trypanosomes

Hey everyone, Would anyone happen to know the average time it takes for a healthy human's immune system to detect a trypanosome, before it changes its coat? I know it's quite a vague question, but by how much, if it's measurable, does the population usually decline before a new coat is expressed, an...

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by Burnsey
Thu Apr 17, 2008 10:12 pm
 
Forum: Microbiology
Topic: Human immune system response to trypanosomes
Replies: 2
Views: 2618

Does this could be a Spreading way of Chagas disease?

Denise, your symptoms don't match Chagas Disease at all. Since trypanosomes do not form cystlike structures, their ability to survive any kind of drying environment would be very limited - transfer by money would be very unlikely. Usually, they depend upon ...

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by Darby
Wed Mar 21, 2007 6:01 pm
 
Forum: Microbiology
Topic: Does this could be a Spreading way of Chagas disease?
Replies: 5
Views: 3740
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