Ribodemes of Blastocystis hominis isolated in Japan.

Y Kaneda Department of Infectious Diseases, Tokai University School of Medicine, Isehara, Japan.

Search for other papers by Y Kaneda in
Current site
Google Scholar
PubMed
Close
,
N Horiki Department of Infectious Diseases, Tokai University School of Medicine, Isehara, Japan.

Search for other papers by N Horiki in
Current site
Google Scholar
PubMed
Close
,
X J Cheng Department of Infectious Diseases, Tokai University School of Medicine, Isehara, Japan.

Search for other papers by X J Cheng in
Current site
Google Scholar
PubMed
Close
,
Y Fujita Department of Infectious Diseases, Tokai University School of Medicine, Isehara, Japan.

Search for other papers by Y Fujita in
Current site
Google Scholar
PubMed
Close
,
M Maruyama Department of Infectious Diseases, Tokai University School of Medicine, Isehara, Japan.

Search for other papers by M Maruyama in
Current site
Google Scholar
PubMed
Close
, and
H Tachibana Department of Infectious Diseases, Tokai University School of Medicine, Isehara, Japan.

Search for other papers by H Tachibana in
Current site
Google Scholar
PubMed
Close
Restricted access

To determine if genetic diversity of Blastocystis hominis exists in Japan, we monitored 64 B. hominis-infected people: 39 asymptomatic people whose infections were detected during routine medical check-ups (32 Japanese and 7 non-Japanese) and 25 patients with gastrointestinal symptoms who visited the outpatient clinics of St. Luke's International Hospital (19 Japanese and 6 non-Japanese). We detected 6 known and 2 new riboprint patterns in isolates from the infected people. There were no differences in the distribution of ribodemes between isolates from Japanese and non-Japanese people, similar to that in other countries. However, we noted a possible relationship between ribodeme type and pathogenicity. The results suggest that ribodemes I, III, and VI may be responsible for gastrointestinal symptoms.

Author Notes

Save