Firdausi Qadri, Christine Wennerås, M. John Albert, Jaber Hossain et al.
Vibrio cholerae O139 has recently emerged as the second etiologic agent of cholera in Asia. A study was carried out to evaluate the induction of specific immune responses to the organism in V. cholerae O139-infected patients. The immune responses to V. cholerae O139 Bengal were studied in patients b...
Firdausi Qadri, Rubhana Raqib, Firoz Ahmed, Taufiqur Rahman et al.
Investigations were carried out to study the production of factors associated with the innate immune response in the systemic and mucosal compartments in adults and children infected with Vibrio cholerae O1 and V. cholerae O139. The levels of nonspecific mediators of the innate defense system, i.e.,...
Firdausi Qadri, Christine Wennerås, Firoz Ahmed, Muhammad Asaduzzaman et al.
We have compared the B cell responses evoked in Bangladeshi, adults (n=11, median age 25 years) and children (n=21, median age 4.5 years), 7 days after intake of each of two doses of an oral, inactivated enterotoxigenic Escherichia coli (ETEC) vaccine composed of formalin-killed ETEC strains express...
Firdausi Qadri, Firoz Ahmed, Muhammad Manjurul Karim, Christine Wennerås et al.
The immunoglobulin subclass responses to homologous lipopolysaccharide (LPS) and to cholera toxin (CT) in adult patients infected with Vibrio cholerae O1 and V. cholerae O139 were studied. LPS-specific antibody-secreting cells (ASC) of both the immunoglobulin A1 (IgA1) and IgA2 subclasses were seen,...
Firdausi Qadri, G Jonson, Yasmin Ara Begum, Christine Wennerås et al.
The mannose-sensitive hemagglutinin (MSHA) is a type 4 pilus present in Vibrio cholerae O1 strains of the El Tor biotype, as well as in strains of serogroup O139. It has been shown to be a colonization antigen in animal models. The aim of this study was to investigate systemic and local antibody res...
Christine Wennerås, Firdausi Qadri, Prodeep K. Bardhan, R. Bradley Sack et al.
Immune responses against enterotoxigenic Escherichia coli (ETEC) were examined in Bangladeshi adults with naturally acquired disease and compared to responses in age-matched Bangladeshi volunteers who had been orally immunized with a vaccine consisting of inactivated ETEC bacteria expressing differe...
Anna Helander, Christine Wennerås, Firdausi Qadri, Ann‐Mari Svennerholm
Enterotoxigenic Escherichia coli (ETEC) strains expressing only coli surface antigen 6 (CS6) have previously been isolated from patients with diarrhea, but the immunogenicity of CS6 has not been established in humans. We have detected CS6-specific immunoglobulin A responses in the feces and blood of...
Anna Rudin, Gudrun Wiklund, Christine Wennerås, Firdausi Qadri
Enterotoxigenic Escherichia coli (ETEC) adhere to the intestinal mucosa by a number of fimbrial colonization factors (CFs) that have been claimed to induce only type-specific immunity. However, adult Bangladeshi patients infected with CFA/I-expressing bacteria, developed significant plasma IgA antib...
Firdausi Qadri, Muhammad Asaduzzaman, Christine Wennerås, Golam Mohi et al.
Cholera toxin (CT)-specific antibody responses of the immunoglobulin E (IgE) isotype in the sera of adult patients suffering from infection with either Vibrio cholerae O1, V. cholerae O139, or enterotoxigenic Escherichia coli (ETEC) were analyzed and compared with those in the sera of volunteers imm...
Anna Helander, Christine Wennerås, Firdausi Qadri, Ann‐Mari Svennerholm
Enterotoxigenic Escherichia coli (ETEC) strains expressing only coli surface antigen 6 (CS6) have previously been isolated from patients with diarrhea, but the immunogenicity of CS6 has not been established in humans. We have detected CS6-specific immunoglobulin A responses in the feces and blood of...