caa a22 4500 44534251X CHVBK 20180317142818.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s00436-010-2097-2 doi (NATIONALLICENCE)springer-10.1007/s00436-010-2097-2 Association of Blastocystis hominis genetic subtypes with urticaria [Elektronische Daten] [Dina Hameed, Omayma Hassanin, Nehal Zuel-Fakkar] Although intestinal parasites are a possible cause of skin disorders, there are few case reports concerning the role of Blastocystis hominis in urticaria. To clarify this association, we determined the frequency of B. hominis genetic subtype in urticarial patients by stool culture and polymerase chain reaction (PCR) and evaluated the clinical and parasitological recovery of urticarial patients after treatment with metronidazole. Of 54 urticarial patients (group I), 18 (33.3%) were diagnosed as acute urticaria (group IA) and 36 (66.7%) were diagnosed as chronic (group IB). Thirty-three (61.1%) out of 54 urticarial (group I) patients were Blastocystis positive by stool culture and PCR. Out of these 33 patients, 21 were symptomatic and 12 were asymptomatic. The amoeboid form was found in 20 (95.2%) out of 21 symptomatic Blastocystis urticarial patients assuring their pathogenic potential. Of 50 normal control group (group II), four (8%) Blastocystis isolates were found with no amoeboid form. B. hominis subtye 3 was the only detected genotype in both groups. Of 20 symptomatic Blastocystis urticarial patients, 12 (60%) patients recovered symptomatically and parasitologically after one course of metronidazole. Recovery reached 100% on repeating the treatment for a second course with disappearance of the amoeboid form. It was concluded that acute urticaria of unknown etiology and chronic idiopathic urticaria patients who are resistant to the ordinary regimen of urticaria treatment might be examined for infection with B. hominis, in order to prescribe the proper specific anti-protozoan treatment. Springer-Verlag, 2010 Hameed Dina Parasitology Department, Faculty of Medicine, Ain Shams University, 13 B Kornesh El Nile, Aghakhan, Shobra, Cairo, Egypt aut Hassanin Omayma Clinical Pathology, Molecular Department of Medical Research Center, Ain-Shams University Hospitals, Abbasia, Cairo, Egypt aut Zuel-Fakkar Nehal Dermatology, Vereology and Andrology Department, Faculty of medicine, Ain Shams University, 3 Kolyet Elbanat buildings, Ard Elgolf, Nasr city, Cairo, Egypt aut Parasitology Research Springer-Verlag 108/3(2011-03-01), 553-560 0932-0113 108:3<553 2011 108 436 https://doi.org/10.1007/s00436-010-2097-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00436-010-2097-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hameed Dina Parasitology Department, Faculty of Medicine, Ain Shams University, 13 B Kornesh El Nile, Aghakhan, Shobra, Cairo, Egypt aut NATIONALLICENCE 700 1- Hassanin Omayma Clinical Pathology, Molecular Department of Medical Research Center, Ain-Shams University Hospitals, Abbasia, Cairo, Egypt aut NATIONALLICENCE 700 1- Zuel-Fakkar Nehal Dermatology, Vereology and Andrology Department, Faculty of medicine, Ain Shams University, 3 Kolyet Elbanat buildings, Ard Elgolf, Nasr city, Cairo, Egypt aut NATIONALLICENCE 773 0- Parasitology Research Springer-Verlag 108/3(2011-03-01), 553-560 0932-0113 108:3<553 2011 108 436 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer