Hia
Mostrando 13-24 de 25 artigos, teses e dissertações.
-
13. Prevalence and Distribution of Adhesins in Invasive Non-Type b Encapsulated Haemophilus influenzae
Adhesion to the respiratory epithelium plays an important role in Haemophilus influenzae infection. The distribution of H. influenzae adhesins in type b and nontypeable strains has been characterized, but little is known about the prevalence of these factors in non-type b encapsulated strains. We analyzed 53 invasive type a, type e, and type f strains for th
American Society for Microbiology.
-
14. Prevalence and Distribution of the hmw and hia Genes and the HMW and Hia Adhesins among Genetically Diverse Strains of Nontypeable Haemophilus influenzae
Nontypeable Haemophilus influenzae is a common cause of human disease and initiates infection by colonizing the upper respiratory tract. In previous work we identified high-molecular-weight adhesins referred to as HMW1 and HMW2, expressed by nontypeable strain 12, and determined that most strains of nontypeable H. influenzae express one or two antigenically
American Society for Microbiology.
-
15. Treatment of inflammatory airway disease in young standardbreds with interferon alpha
The effect of oral treatment with natural or recombinant human interferon alpha (HIA) on inflammatory airway disease in young standardbreds was assessed in a double-blind, randomized clinical trial. A total of 34 horses with nasal discharge, excess mucus in the trachea, and a persistent cough of at least 2 weeks’ duration that interfered with training comp
Canadian Veterinary Medical Association.
-
16. Prevalence of the hifBC, hmw1A, hmw2A, hmwC, and hia Genes in Haemophilus influenzae Isolates
Adherence of Haemophilus influenzae to respiratory epithelial cells is the first step in the pathogenesis of H. influenzae infection and is facilitated by the action of several adhesins located on the surface of the bacteria. In this study, prevalences of hifBC, which represent the pilus gene cluster; hmw1A, hmw2A, and hmwC, which represent high-molecular-we
American Society for Microbiology.
-
17. Adhesin Expression in Matched Nasopharyngeal and Middle Ear Isolates of Nontypeable Haemophilus influenzae from Children with Acute Otitis Media
The HMW1 and HMW2 proteins, Hia, and hemagglutinating pili are important adherence factors in nontypeable Haemophilus influenzae. To gain insight into the relative importance of these adhesins in nasopharyngeal colonization and localized respiratory tract disease, we assessed their expression in matched nasopharyngeal and middle ear isolates of nontypeable H
American Society for Microbiology.
-
18. Evaluation of Antibodies against a Rubella Virus Neutralizing Domain for Determination of Immune Status
The protective immune responses against rubella virus (RV) are related to its neutralizing epitopes, an issue that is important to consider when assessing the immune status of patients with remote infection. In the present paper, we compare the antibodies detected by a synthetic-peptide-based enzyme immunoassay (EIA) with antibodies detected by the tradition
American Society for Microbiology.
-
19. Characterization of the genetic locus encoding Haemophilus influenzae type b surface fibrils.
Haemophilus influenzae is a common gram-negative pathogen that initiates infection by colonizing the upper respiratory tract epithelium. In previous work, we reported the isolation of a locus involved in expression of short, thin surface fibrils by H. influenzae type b and presented evidence that surface fibrils promote attachment to human epithelial cells.
-
20. Limited Genetic Diversity of Recent Invasive Isolates of Non-Serotype b Encapsulated Haemophilus influenzae
Invasive infections caused by non-type b encapsulated Haemophilus influenzae have increased in frequency in the last decade. This change prompted us to characterize the genetic relationships of 48 recently isolated invasive H. influenzae type a (Hia), e (Hie), and f (Hif) strains by comparison of restriction digest patterns (RDPs). Recent Hia isolates exhibi
American Society for Microbiology.
-
21. A 20-Kilodalton N-Terminal Fragment of the D15 Protein Contains a Protective Epitope(s) against Haemophilus influenzae Type a and Type b
A conserved 80-kDa minor outer membrane protein, D15, of Haemophilus influenzae has been shown to be a protective antigen in laboratory animals against H. influenzae type a (Hia) or type b (Hib) infection. To localize the protective B-cell epitope(s) within the D15 protein and to further explore the possibility of using synthetic peptides as vaccine antigens
American Society for Microbiology.
-
22. Isolation and biochemical characterization of Haemophilus species isolated simultaneously from the oropharyngeal and anogenital areas.
Several reports have described the high frequency of pharyngeal isolation of Haemophilus species. Few studies have compared the simultaneous isolation rate of this species in the oropharyngeal and anogenital areas. Using two selective media, heart infusion agar (HIA) supplemented with 5% defibrinated rabbit blood, 1% IsoVitaleX, and either bacitracin alone (
-
23. Supercoiling energy and nucleosome formation: the role of the arginine-rich histone kernel.
We have formed complexes of relaxed closed circular Col E1 DNA with various combinations of histones, and examined the effects of treating the complexes with nicking-closing enzyme. Germond et al (1) have shown that when a mixture of the four core histones of the nucleosome (HIA, H2B, H3 and H4) is used in such an experiment, the subsequently isolated DNA is
-
24. Induction of Proinflammatory Cytokines from Human Respiratory Epithelial Cells after Stimulation by Nontypeable Haemophilus influenzae
Nontypeable Haemophilus influenzae (NTHi) causes repeated respiratory infections in patients with chronic lung diseases. These infections are characterized by a brisk inflammatory response which results in the accumulation of polymorphonucleated cells in the lungs and is dependent on the expression and secretion of proinflammatory cytokines. We hypothesize t
American Society for Microbiology.