Differences in clinical significance and morphologic features of Blastocystis sp subtype 3 (Journal article)

Vassalos, C. M./ Spanakos, G./ Vassalou, E./ Papadopoulou, C./ Vakalis, N.

Blastocystis is a polymorphic intestinal parasite that is common in humans. A total of 51 asymptomatic and symptomatic patients positive for Blastocystis only were included in the study. Symptoms were mainly nonspecific gastrointestinal symptoms. Blastocystis isolates were xenically cultured and subtyped. Blastocystis species subtype 3 was the predominant subtype. Intrasubtype differences (vacuolar/amoeboid presence) in subtype 3 morphotypes were observed in 32 asymptomatic and symptomatic subtype 3 cases and could possibly be related to Blastocystis pathogenic potential. Diverse morphologic features (vacuolar transiting to amoeboid), probably reflecting the progression from an asymptomatic to a symptomatic state, were observed in an asymptomatic subtype 3 carrier who later had symptoms. Searching for amoeboid forms might be helpful to presumptively screen symptomatic patients with subtype 3 or to follow up an asymptomatic subtype 3 carrier in case symptoms become evident before antiprotozoal treatment was attempted. Further studies on the roles of morphologic features and variation within Blastocystis species subtypes as predictors of symptoms are encouraged.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής
Keywords: Adult,Blastocystis/classification/genetics/isolation & purification,Blastocystis Infections/diagnosis/parasitology/*pathology,DNA, Protozoan,Female,Genotype,Humans,Intestinal Diseases, Parasitic/diagnosis/*parasitology/pathology,Male
URI: https://olympias.lib.uoi.gr/jspui/handle/123456789/22497
ISSN: 1943-7722
Link: http://www.ncbi.nlm.nih.gov/pubmed/20093234
http://ajcp.ascpjournals.org/content/133/2/251.full.pdf
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

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