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Re: Lineup, we need to know your history of meds and diagnosis
 
linenup Views: 3,313
Published: 8 years ago
 
This is a reply to # 2,147,702

Re: Lineup, we need to know your history of meds and diagnosis


Dr. Stensvold's comments regarding biodiversity among Iodameoba :

(Of note is the issue of a sample that appears under the microscope to be similar organisms (morphological) yet having completely different DNA.)


A couple of months ago I revisited Why it is a bugs life by Jörg Blech (The Guardian (2002)). Speaking of numbers, - I wonder which one is the most successful eukaryote in terms of numbers? Blastocystis? Dientamoeba? Or any other “ parasite sp.”? After realising that microscopy methods allow us to see only the very tip of the iceberg and after adding PCR to our routine diagnostics, we have found a few examples of “novel” parasitic species and many more may be in store for us. Morphologically identical organisms, such as those belonging to Iodamoeba bütschlii, may be found in both human and non-human hosts and may differ genetically across the nucelar small subunit rRNA gene by up to more than 30%! This is quite astonishing given the fact that the difference between human and murine small subunit rDNA is about 1%! Since these data have been established only recently, obviously no one knows the respective clinical significance of these morphologically similar but genetically very different lineages, and further studies may reveal differences in pathogenicity as seen in other amoebic genera. Blastocystis and Entamoeba coli are somewhat similar examples.
 

 
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