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Sequence and molecular characterization of a multicopy invasion plasmid antigen gene, ipaH, of Shigella flexneri
A lambda gt11 expression library of Tn5-tagged invasion plasmid pWR110 contained a set of recombinants encoding a 60-kilodalton protein (designated IpaH) recognized by rabbit antisera raised against S. flexneri invading plasmids.
Epidemiology of Tetracycline Resistance Determinants in Shigella spp. and Enteroinvasive Escherichia coli: Characterization and Dissemination of tet(A)-1
It is indicated that both clonal spread and horizontal transfer had contributed to the spread of specific tetracycline resistance determinants in these populations and the use of these parameters as an epidemiological tool to follow the transmission of determinants and strains is demonstrated.
Vaccination against Shigellosis with Attenuated Shigella flexneri 2a Strain SC602
Although the apparent window of safety is narrow, SC602 is the first example of an attenuated S. flexneri 2a candidate vaccine that provides protection against shigellosis in a stringent, human challenge model.
Transcutaneous Immunization Using Colonization Factor and Heat-Labile Enterotoxin Induces Correlates of Protective Immunity for Enterotoxigenic Escherichia coli
The results demonstrate that relevant colonization factor and antitoxin immunity can be induced by TCI and suggest that an ETEC traveler's diarrhea vaccine could be delivered by using a patch.
Sequence variation in two ipaH genes of Shigella flexneri 5 and homology to the LRG‐like family of proteins
Oligonucleotide primers derived from the ipaH7.8 sequence have been used to determine the boundaries of DNA sequence homology among five lpaH genes on the invasion plasmid (pWR100) of Shigella
Phase I Evaluation of ΔvirG Shigella sonnei Live, Attenuated, Oral Vaccine Strain WRSS1 in Healthy Adults
It is concluded that WRSS1 vaccine is remarkably immunogenic in doses ranging from 103 to 106 CFU but elicits clinical reactions that must be assessed in further volunteer trials.
Isolation and Characterization of a Shigella flexneri Invasin Complex Subunit Vaccine
Mice or guinea pigs immunized intranasally with purified invasin complex (invaplex), without any additional adjuvant, mounted a significant immunoglobulin G (IgG) and IgA antibody response against the Shigella virulence antigens and LPS.
Identification and molecular characterization of a 27 kDa Shigella flexneri invasion plasmid antigen, IpaJ.
The IpaJ protein was expressed and purified as a His6-tagged fusion protein that reacted with convalescent sera in Western blot analyses, confirming its identification as a Shigella immunogen.
Two Studies Evaluating the Safety and Immunogenicity of a Live, Attenuated Shigella flexneri 2a Vaccine (SC602) and Excretion of Vaccine Organisms in North American Volunteers
The first community-based evaluation of Shigella flexneri 2a strain SC602, a live, oral vaccine strain attenuated by deletion of the icsA (virG) plasmid virulence gene, given at 104 CFU demonstrated that SC602 is a substantially attenuated candidate vaccine that can evoke protection against the most severe symptoms of shigellosis in a stringent human challenge model of disease.
Shigella flexneri IpaH7.8 Facilitates Escape of Virulent Bacteria from the Endocytic Vacuoles of Mouse and Human Macrophages
The results suggest that a role of the ipaH7.8 gene product is to facilitate the escape of the virulent bacteria from the phagocytic vacuole of monocytes and macrophages.