Structural insights into peptidoglycan glycosidase EtgA binding to the inner rod protein EscI of the type III secretion system via a designed EscI-EtgA fusion protein.

Bacteria express lytic enzymes such as glycosidases, which have potentially self-destructive peptidoglycan (PG)-degrading activity and, therefore, require careful regulation in bacteria. The PG glycosidase EtgA is regulated by localization to the assembling type III secretion system (T3SS), generating a hole in the PG layer for the T3SS to reach the outer membrane. The EtgA localization was found to be mediated via EtgA interacting with the T3SS inner rod protein EscI.

Exploring the inhibition of the soluble lytic transglycosylase Cj0843c of Campylobacter jejuni via targeting different sites with different scaffolds.

Bacterial lytic transglycosylases (LTs) contribute to peptidoglycan cell wall metabolism and are potential drug targets to potentiate β-lactam antibiotics to overcome antibiotic resistance. Since LT inhibitor development is underexplored, we probed 15 N-acetyl-containing heterocycles in a structure-guided fashion for their ability to inhibit and bind to the Campylobacter jejuni LT Cj0843c. Ten GlcNAc analogs were synthesized with substitutions at the C1 position, with two having an additional modification at the C4 or C6 position.

Evidence of low vitamin D intakes in the Australian population points to a need for data-driven nutrition policy for improving population vitamin D status.

Background: Nearly one in four Australian adults is vitamin D deficient (serum 25-hydroxyvitamin D concentrations [25(OH)D] < 50 nmol L ) and current vitamin D intakes in the Australian population are unknown. Internationally, vitamin D intakes are commonly below recommendations, although estimates generally rely on food composition data that do not include 25(OH)D. We aimed to estimate usual vitamin D intakes in the Australian population.

Speech Outcomes Following Orticochea Pharyngoplasty in Patients With History of Cleft Palate and Noncleft Velopharyngeal Dysfunction.

Objective: To report speech outcomes following Orticochea pharyngoplasty in 43 patients with cleft palate and noncleft velopharyngeal dysfunction.

Design: A retrospective surgical audit of patients undergoing Orticochea pharyngoplasty between 2004 and 2012, with speech as a primary outcome measure.

Setting: Patients known to a regional UK cleft center.

Turnover Chemistry and Structural Characterization of the Cj0843c Lytic Transglycosylase of .

The soluble lytic transglycosylase Cj0843c from breaks down cell-wall peptidoglycan (PG). Its nonhydrolytic activity sustains cell-wall remodeling and repair. We report herein our structure-function studies probing the substrate preferences and recognition by this enzyme.

Use of a purified collagen membrane to aid closure of palatal fistulae.

Introduction: Fistula formation following closure of palatal clefts remains a difficult clinical complication. A significant recurrence rate has also been reported following attempted closure. We present our results of fistula closure augmented with Bio-Gide(®), a purified porcine collagen membrane designed to promote guided tissue regeneration.

Predesigned breast shaping assisted by multidetector-row computed tomographic angiography in autologous breast reconstruction.

Background: Free abdominal flaps are the first option in autologous breast reconstruction using the multidetector-row computed tomographic angiography for mapping the abdominal perforators. The authors aim to evaluate the impact of using a preoperative design for shaping the new breast symmetrical to the contralateral breast, assisted by multidetector-row computed tomographic angiography.

Methods: Thirty-two consecutive patients who underwent delayed unilateral breast reconstruction with free abdominal flaps were divided into two groups.

Respiratory morbidity, healthcare utilisation and cost of care at school age related to home oxygen status.

Unlabelled: The aim of the study was to determine whether respiratory morbidity, lung function, healthcare utilisation and cost of care at school age in prematurely born children who had bronchopulmonary dysplasia (BPD) were influenced by use of supplementary oxygen at home after neonatal intensive care unit discharge. Healthcare utilisation and cost of care in years 5 to 7 and respiratory morbidity (parent-completed respiratory questionnaire) and lung function measurements at least at age 8 years were assessed in 160 children. Their median gestational age was 27 (range 22-31) weeks and 65 of them had received supplementary oxygen when discharged home (home oxygen group).

Estimating the impact of mandatory fortification of bread with iodine on pregnant and post-partum women.

Background: Iodine deficiency has re-emerged in Australia. Pregnant and breastfeeding women need higher iodine intakes (estimated average requirements: 160 μg/day and 190 μg/day) than non-pregnant women (100 μg/day) because iodine is critical for early infant development. The impact of iodine fortification of bread on women's iodine intake is evaluated by reproductive status using 2003 Australian Longitudinal Study on Women's Health (ALSWH) food frequency data and projected onto 1995 National Nutrition Survey (NNS) daily food consumption data for women of child-bearing age.

School age outcome of hospitalisation with respiratory syncytial virus infection of prematurely born infants.

Background: Hospitalisation due to respiratory syncytial virus (RSV) infection in the first 2 years after birth has been associated with increased healthcare utilisation and associated costs up to 5 years of age in children born prematurely at less than 32 weeks of gestation who developed bronchopulmonary dysplasia (BPD). A study was undertaken to determine whether hospitalisation due to RSV infection in the first 2 years was associated with increased morbidity and lung function abnormalities in such children at school age, and if any effects were influenced by age.

Methods: Healthcare utilisation and cost of care in years 5-7 were reviewed in 147 children and changes in healthcare utilisation between 0 and 8 years were assessed also using results from two previous studies.

Preoperative planning for DIEP breast reconstruction: early experience of the use of computerised tomography angiography with VoNavix 3D software for perforator navigation.

The deep inferior epigastric perforator (DIEP) flap is normally the first choice in breast reconstruction; however, due to the considerable vascular anatomical variation and the learning curve for the procedure, muscle-sparing transverse rectus abdominis musculocutaneous (TRAM) flaps are still frequently performed to reduce the rate of complications. Accurate preoperative investigation of the perforators would allow better operative preparation and possibly shorten the learning curve. In an effort to increase accuracy of preoperative planning and to aid preoperative decision-making in free abdominal flap breast reconstruction, we have acquired the use of VoNavix, software that creates three dimensional images from computerised tomography angiography (CTA) data.

The long-term effect of unilateral t-tube insertion in patients undergoing cleft palate repair: 20-year follow-up of a randomised controlled trial.

Objectives: Between July 1984 and March 1987, all children that underwent repair for primary cleft palate at the Queen Victoria Hospital were enrolled in a clinical trial. Those found to have otitis media with effusion at time of surgery had a t-tube inserted into one randomised ear, whilst the other ear received no treatment. The object of the study was to reassess the patients from the original trial to discover the impact of the unilateral t-tube, twenty years later analysed on an intention to treat basis.

Association scan of 14,500 nonsynonymous SNPs in four diseases identifies autoimmunity variants.

We have genotyped 14,436 nonsynonymous SNPs (nsSNPs) and 897 major histocompatibility complex (MHC) tag SNPs from 1,000 independent cases of ankylosing spondylitis (AS), autoimmune thyroid disease (AITD), multiple sclerosis (MS) and breast cancer (BC). Comparing these data against a common control dataset derived from 1,500 randomly selected healthy British individuals, we report initial association and independent replication in a North American sample of two new loci related to ankylosing spondylitis, ARTS1 and IL23R, and confirmation of the previously reported association of AITD with TSHR and FCRL3. These findings, enabled in part by increased statistical power resulting from the expansion of the control reference group to include individuals from the other disease groups, highlight notable new possibilities for autoimmune regulation and suggest that IL23R may be a common susceptibility factor for the major 'seronegative' diseases.

Spatial and temporal distribution of bluetongue and its Culicoides vectors in Bulgaria.

Surveillance of Culicoides (Diptera: Ceratopogonidae) biting midges was carried out between 2001 and 2003, at 119 sites within a 50 x 50-km grid distributed across Bulgaria, using light trap collections around the time of peak adult midge abundance. Sentinel and ad hoc serum surveillance of hosts susceptible to bluetongue infection was carried out at around 300 sites between 1999 and 2003. Following the initial incursion of bluetongue virus 9 (BTV-9) into Bourgas province in 1999, affecting 85 villages along the southern border, a further 76 villages were affected along the western border in 2001, with outbreaks extending as far north as 43.

Preschool healthcare utilisation related to home oxygen status.

Objective: To determine, in prematurely born children who had bronchopulmonary dysplasia (BPD), if respiratory morbidity, healthcare utilisation, and cost of care during the preschool years were influenced by use of supplementary oxygen at home after discharge from the neonatal intensive care unit.

Design: Observational study.

Setting: Four tertiary neonatal intensive care units.

Voltage-gated sodium channel blockers; target validation and therapeutic potential.

Voltage-gated sodium channels are encoded by a family of ten structurally-related genes that are expressed in spatially and temporally distinct patterns, mainly in excitable tissues. They underlie electrical signalling in nerve and muscle. It has long been known that sodium channel blockers are anaesthetics as well as powerful analgesics when delivered at low concentrations.

Voltage-gated sodium channels and pain pathways.

Acute, inflammatory, and neuropathic pain can all be attenuated or abolished by local treatment with sodium channel blockers such as lidocaine. The peripheral input that drives pain perception thus depends on the presence of functional voltage-gated sodium channels. Remarkably, two voltage-gated sodium channel genes (Nav1.

High versus restricted use of home oxygen therapy, health care utilisation and the cost of care in chronic lung disease infants.

Unlabelled: Use of home oxygen therapy for prematurely born infants with chronic lung disease (CLD) can facilitate early discharge, but affected infants might require more readmissions. Our aim was to determine if health care utilisation and associated costs in the first 2 years were greater in centres with a high compared to centres with restricted use of home oxygen therapy. A retrospective review of the hospital and general practitioner (GP) medical records of 235 infants with CLD (median gestational age 27 weeks; range 22-33 weeks) was performed to note their readmissions, outpatient attendances, community service referrals and cost of care in the first 2 years after birth.

Health care utilisation of prematurely born, preschool children related to hospitalisation for RSV infection.

Background: In prematurely born infants with chronic lung disease (CLD), RSV hospitalisation is associated with increased health service utilisation and costs in the first two years after birth.

Aims: To determine whether RSV hospitalisation in the first two years was associated with chronic respiratory morbidity during the preschool years in prematurely born children who had had CLD.

Methods: Retrospective review of readmissions, outpatient attendances, and community care in years 2-4 and, at age 5 years, assessment of the children's respiratory status and their health related quality of life.

Incomplete incorporation of tandem subunits in recombinant neuronal nicotinic receptors.

Tandem constructs are increasingly being used to restrict the composition of recombinant multimeric channels. It is therefore important to assess not only whether such approaches give functional channels, but also whether such channels completely incorporate the subunit tandems. We have addressed this question for neuronal nicotinic acetylcholine receptors, using a channel mutation as a reporter for subunit incorporation.

Disruption of cleft palate repair following the use of the laryngeal mask airway.

A 55-year-old man was admitted for routine examination of ears with insertion of grommets under general anaesthesia. At 2 years of age he had undergone successful repair of cleft lip and palate. A reinforced laryngeal mask airway was employed to maintain the airway.

The effects of beta3 subunit incorporation on the pharmacology and single channel properties of oocyte-expressed human alpha3beta4 neuronal nicotinic receptors.

We compared the main properties of human recombinant alpha3beta4beta3 neuronal nicotinic receptors with those of alpha3beta4 receptors, expressed in Xenopus oocytes. beta3 incorporation decreased the channel mean open time (from 5.61 to 1.

Seasonal abundance of four Culicoides spp. (Diptera: Ceratopogonidae) at Al-Ahsa oasis, Eastern Province, Saudi Arabia.

This report constitutes the first study of Culicoides spp. and their seasonal abundance at Al-Ahsa, the largest oasis in the Eastern Province of Saudi Arabia. New Jersey light traps were used to collect the midges at Mastock farm and Al-Mansura village.