Search
Elke Lea-Ann Ruth Peter Seppanen Kirkham Thornton Richmond BSc PhD PhD PhD MBBS MRCP(UK) FRACP Program Manager, Bacterial Respiratory Infectious
Ruth Peter Thornton Richmond PhD MBBS MRCP(UK) FRACP Co-head, Bacterial Respiratory Infectious Disease Group (BRIDG) Head, Vaccine Trials Group
Ruth Peter Thornton Richmond PhD MBBS MRCP(UK) FRACP Co-head, Bacterial Respiratory Infectious Disease Group (BRIDG) Head, Vaccine Trials Group
The Bacterial Respiratory Infectious Disease Group (BRIDG) has a major focus ear and lung disease involving Streptococcus pneumoniae and Haemophilus influenzae.
Respiratory syncytial virus (RSV) causes annual epidemics of infections affecting the whole population. In vitro, it has been shown to infect and persist in human dendritic cells (DCs) for prolonged periods. Initially persistence is associated with low levels of replication before the virus becomes dormant. Reactivation of viral replication can be triggered many months later.
Children in low-mid income countries, and First Nations children in high-income countries, experience disproportionately high rates of Streptococcus pneumoniae and Haemophilus influenzae infections and diseases including pneumonia and otitis media.
Nontypeable Haemophilus influenzae (NTHi) is a major otitis media (OM) pathogen, with colonization a prerequisite for disease development. Most acute OM is in children <5 years old, with recurrent and chronic OM impacting hearing and learning. Therapies to prevent NTHi colonization and/or disease are needed, especially for young children. Respiratory viruses are implicated in driving the development of bacterial OM in children.
Treatment options for viral lung infections are currently limited. We aimed to explore the safety and efficacy of inhaled ethanol in an influenza-infection mouse model.
One third of children require repeat ventilation tube insertion (VTI) for otitis media. Disease recurrence is associated with persistent middle ear bacterial biofilms. With demonstration that Dornase alfa (a DNase) disrupts middle ear effusion biofilms ex vivo, we identified potential for this as an anti-biofilm therapy to prevent repeat VTI. First, safety and tolerability needed to be measured.
Chronic wet cough for longer than 4 weeks is a hallmark of chronic suppurative lung diseases, including protracted bacterial bronchitis, and bronchiectasis in children. Severe lower respiratory infection early in life is a major risk factor of PBB and paediatric bronchiectasis.