Haemophilus influenzae requires either heme or a porphyrin and iron source for growth. Microarray studies of H. influenzae strain Rd KW20 identified 162 iron/heme-regulated genes, representing approximately 10% of the genome, with > or =1.5-fold changes in transcription in response to iron/heme availability in vitro. Eighty genes were preferentially expressed under iron/heme restriction; 82 genes were preferentially expressed under iron/heme-replete conditions.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1540045 | PMC |
| http://dx.doi.org/10.1128/JB.00417-06 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Cervical Spinal Epidural Abscess From Haemophilus influenzae in an Adult: A Case Report.
Cureus
December 2024
Department of Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, USA.
Pyogenic spinal infections due to ()are rare. After a search of the literature, we deemed our case to be the first description of spinal epidural abscess (SEA) from . This is a 74-year-old female patient with a history of diabetes who presented to the emergency department with fever and persistent paracervical pain after being initially diagnosed with viral sinusitis two days prior.
View Article and Find Full Text PDFFannyhessea vaginae and clearance of Lactobacillus iners are associated with incident non-chlamydial non-Mycoplasma genitalium urethritis in men who have sex with women.
Sex Transm Dis
December 2024
Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA.
Background: The etiology of nongonococcal urethritis (NGU) is incompletely understood. We sought to determine if genitourinary bacterial diversity or specific taxa were associated with incident NGU.
Methods: From August 2014-July 2018, men who have sex with women attending a sexual health clinic were clinically evaluated, including Mycoplasma genitalium (MG) and Chlamydia trachomatis (CT) testing, at enrollment and six monthly visits.
The importance of microbiology reference laboratories and adequate funding for infectious disease surveillance.
Lancet Digit Health
December 2024
Nuffield Department of Population Health, University of Oxford, Oxford, UK. Electronic address:
Microbiology reference laboratories perform a crucial role within public health systems. This role was especially evident during the COVID-19 pandemic. In this Viewpoint, we emphasise the importance of microbiology reference laboratories and highlight the types of digital data and expertise they provide, which benefit national and international public health.
View Article and Find Full Text PDFPCR-based characterization of nasal and ocular surface flora and functional analysis of bacterial metabolic pathways in congenital nasolacrimal duct obstruction.
Int Ophthalmol
December 2024
Department of Ophthalmology, University of Health Sciences, Ankara Bilkent City Hospital, Ankara, Turkey.
Purpose: To evaluate the role of Streptococcus pneumoniae, Staphylococcus aureus, Haemophilus influenzae, Serratia marcescens, and Moraxella catarrhalis in the nasal and ocular surface flora, along with their metabolic activities in children with unilateral congenital nasolacrimal duct obstruction (CNLDO).
Methods: Swabs were taken from the bilateral inferior meatus and ocular surface of 26 children with unilateral CNLDO before probing. Nasal and ocular surface swabs from non-operated eyes of children who underwent unilateral blepharoptosis or strabismus surgery formed the control group.
Antimicrobial activities of seasonally collected bee products: honey, propolis, royal jelly, venom, and mellitin.
Braz J Biol
December 2024
AL-Balqa Applied University, Faculty of Agricultural Technology, Department of Plant Production and Protection, Al-Salt, Jordan.
Ethanolic extracts of seasonally collected natural bee products (honey, propolis, royal jelly (RJ), and bee venom (BV)) were tested for their potential as antimicrobial agents against antibiotic-resistant bacteria and fungi. These extracts exhibited various inhibitory effects on antibiotic-resistant bacteria (Streptococcus pneumoniae, Staphylococcus aureus, MRSA, Salmonella typhimurium, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Proteus vulgaris, and Haemophilus influenzae) and fungi (Aspergillus brasiliensis and Candida albicans), with the exception of S. pneumonia, which was not inhibited by honey and RJ extracts, and P.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!