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result(s) for
"Norman, Nick"
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A summer in Afghanistan
2009
Each morning, I would receive a \"ready to move\" message from tlie security manager at the residential compound, climb into an armored vehicle with a driver and bodyguard, and bounce across the often unpaved roads to the other side of Kabul.
Journal Article
With lead law, state isn't stepping up to the plate
2018
In the city of Claremont's voluntary increased lead testing effort, a higher amount of testing has resulted in the same or higher percentage of children with elevated levels. [...]it is easy math to project that with the increased testing from 16 percent to 85 percent (expected increase due to the universal testing provisions of the bill), then 2,192 becomes at least 11,645, (2,192/16 x 85 =11,645). First off, it is not a loan fund. The grant program, on the other hand, would address these concerns and fall in line with other states offering tax credits against income tax for lead remediation.
Newspaper Article
Even 11-goal feast can't distract wedding guest
2008
Collier played a key hand as the men's Black Sticks lashed Japan 7-4 in the second of their four-test international series in Tauranga but the midfielder also wanted a quick escape to cousin Matt Collier's wedding. Playing with ace drag flicker Hayden Shaw and the midfield brilliance of skipper Ryan Archibald, who both missed Thursday's game, New Zealand conceded an early goal from a penalty corner to Takahiko Yamabori before hitting back through Simon Child, Archibald and Phil Burrows. \"I've really enjoyed the experience of committing myself to a goal, especially one as big as Beijing, but it's starting to dawn on us that there's also a lot at stake.\"
Newspaper Article
Effectiveness of maternal pertussis vaccination in England: an observational study
2014
In October, 2012, a pertussis vaccination programme for pregnant women was introduced in response to an outbreak across England. We aimed to assess the vaccine effectiveness and the overall effect of the vaccine programme in preventing pertussis in infants.
We undertook an analysis of laboratory-confirmed cases and hospital admissions for pertussis in infants between Jan 1, 2008, and Sept 30, 2013, using data submitted to Public Health England as part of its enhanced surveillance of pertussis in England, to investigate the effect of the vaccination programme. We calculated vaccine effectiveness by comparing vaccination status for mothers in confirmed cases with estimates of vaccine coverage for the national population of pregnant women, based on data from the Clinical Practice Research Datalink.
The monthly total of confirmed cases peaked in October, 2012 (1565 cases), and subsequently fell across all age groups. For the first 9 months of 2013 compared with the same period in 2012, the greatest proportionate fall in confirmed cases (328 cases in 2012 vs 72 cases in 2013, −78%, 95% CI −72 to −83) and in hospitalisation admissions (440 admissions in 2012 vs 140 admissions in 2013, −68%, −61 to −74) occurred in infants younger than 3 months, although the incidence remained highest in this age group. Infants younger than 3 months were also the only age group in which there were fewer cases in 2013 than in 2011 (118 cases in 2011 vs 72 cases in 2013), before the resurgence. 26 684 women included in the Clinical Practice Research Datalink had a livebirth between Oct 1, 2012 and Sept 3, 2013; the average vaccine coverage before delivery based on this cohort was 64%. Vaccine effectiveness based on 82 confirmed cases in infants born from Oct 1, 2012, and younger than 3 months at onset was 91% (95% CI 84 to 95). Vaccine effectiveness was 90% (95% CI 82 to 95) when the analysis was restricted to cases in children younger than 2 months.
Our assessment of the programme of pertussis vaccination in pregnancy in England is consistent with high vaccine effectiveness. This effectiveness probably results from protection of infants by both passive antibodies and reduced maternal exposure, and will provide valuable information to international policy makers.
Public Health England.
Journal Article
Sustained Effectiveness of the Maternal Pertussis Immunization Program in England 3 Years Following Introduction
by
Andrews, Nick
,
Fry, Norman K.
,
Ribeiro, Sonia
in
Adult
,
Diphtheria-Tetanus-Pertussis Vaccine - immunology
,
England - epidemiology
2016
The effectiveness of maternal immunization in preventing infant pertussis was first demonstrated in England, 1 year after the program using diphtheria–tetanus–5-component acellular pertussis–inactivated polio vaccine (dT5aP-IPV) was introduced in 2012. Vaccine effectiveness against laboratory-confirmed pertussis has been sustained >90% in the 3 years following its introduction, despite changing to another acellular vaccine with different antigen composition. Consistent with this, disease incidence in infants <3 months of age has remained low despite high activity persisting in those aged 1 year and older. Vaccine effectiveness against infant deaths was estimated at 95% (95% confidence interval, 79%–100%). Additional protection from maternal immunization is retained in infants who received their first dose of the primary series. There is no longer evidence of additional protection from maternal vaccination after the third infant dose. Although numbers are small and ongoing assessment is required, there is no evidence of increased risk of disease after primary immunization in infants whose mothers received maternal vaccination.
Journal Article
ILC1 drive intestinal epithelial and matrix remodelling
by
Marciano, Daniele
,
Walters, Nick J.
,
Niazi, Umar
in
631/250/2504
,
631/532/2437
,
639/301/54/2295
2021
Organoids can shed light on the dynamic interplay between complex tissues and rare cell types within a controlled microenvironment. Here, we develop gut organoid cocultures with type-1 innate lymphoid cells (ILC1) to dissect the impact of their accumulation in inflamed intestines. We demonstrate that murine and human ILC1 secrete transforming growth factor β1, driving expansion of CD44v6
+
epithelial crypts. ILC1 additionally express MMP9 and drive gene signatures indicative of extracellular matrix remodelling. We therefore encapsulated human epithelial–mesenchymal intestinal organoids in MMP-sensitive, synthetic hydrogels designed to form efficient networks at low polymer concentrations. Harnessing this defined system, we demonstrate that ILC1 drive matrix softening and stiffening, which we suggest occurs through balanced matrix degradation and deposition. Our platform enabled us to elucidate previously undescribed interactions between ILC1 and their microenvironment, which suggest that they may exacerbate fibrosis and tumour growth when enriched in inflamed patient tissues.
Type-1 innate lymphoid cells have been shown to drive intestinal epithelial proliferation and extracellular matrix remodelling through TGF-β1 secretion, which could exacerbate inflammatory bowel disease comorbidities such as cancer and fibrosis.
Journal Article
Pneumococcal carriage in children and their household contacts six years after introduction of the 13-valent pneumococcal conjugate vaccine in England
2018
In April 2010, 13-valent pneumococcal conjugate vaccine (PCV13) replaced PCV7 in the infant immunisation schedule in England and Wales. Despite limited serotype replacement in invasive pneumococcal disease (IPD) during the first four post-PCV13 years, non-vaccine type (NVT) IPD increased substantially in 2014/15. We undertook a carriage study in 2015/16 to help understand the reasons for this increase.
Families with a child aged <5 years attending a participating general practice in Gloucestershire or Hertfordshire were invited to provide nasopharyngeal swabs from all consenting members. Swabs from 650 individuals (293 under five, 73 five to twenty and 284 >twenty years) were cultured and serotyped for Streptococcus pneumoniae. Results were compared with those from three previous household studies conducted in the same populations between 2001 to 2013, and with the serotypes causing IPD to estimate case-carrier ratios (CCRs). Overall carriage prevalence did not differ between the four carriage studies with reductions in vaccine-type carriage offset by increases in NVT carriage. While no individual NVT serotype showed an increase in CCR from 2012/13, the composition of the serotypes comprising the NVT group differed such that the overall CCR of the NVT group had significantly increased since 2012/13. Carriage of two PCV13 serotypes, 3 and 19A, was found in 2015/16 (3/650 = 0.5% and 2/650 = 0.3% respectively) with no overall reduction in carriage prevalence of PCV13-7 serotypes since 2012/13, though 6C prevalence, a vaccine-related serotype, had reduced from 1.8% in 2012/13 to 2/648 (0.3%) in 2015/16, p = 0.013.
There was continuing evolution in carried NVTs six years after PCV13 introduction which, in addition to being vaccine-driven, could also reflect natural secular changes in certain NVTs. This poses challenges in predicting future trends in IPD. Elimination of carriage and disease due to serotypes 3 and 19A may not be achieved by PCV13.
Journal Article
Genetics and ontogeny are key factors influencing thermal resilience in a culturally and economically important bivalve
by
Cervantes-Loreto, Alba
,
Knight, Benjamin R.
,
Smith, Kirsty F.
in
631/158/2455
,
631/208/1348
,
631/601/1737
2024
Increasing seawater temperatures coupled with more intense and frequent heatwaves pose an increasing threat to marine species. In this study, the New Zealand green-lipped mussel,
Perna canaliculus
, was used to investigate the effect of genetics and ontogeny on thermal resilience. The culturally and economically significant mussel
P. canaliculus
(Gmelin, 1971) has been selectively-bred in New Zealand for two decades, making it a unique biological resource to investigate genetic interactions in a temperate bivalve species. Six selectively-bred full sibling families and four different ages, from early juveniles (6, 8, 10 weeks post-fertilisation) to sub-adults (52 weeks post-fertilisation), were used for experimentation. At each age, each family was exposed to a three-hour heat challenge, followed by recovery, and survival assessments. The shell lengths of live and dead juvenile mussels were also measured. Gill tissue samples from sub-adults were collected after the thermal challenge to quantify the 70 kDa heat shock protein gene (
hsp70
). Results showed that genetics, ontogeny and size influence thermal resilience in
P. canaliculus
, with LT
50
values ranging between 31.3 and 34.4 °C for all studied families and ages. Juveniles showed greater thermotolerance compared to sub-adults, while the largest individuals within each family/age class tended to be more heat sensitive than their siblings. Sub-adults differentially upregulated
hsp70
in a pattern that correlated with net family survival following heat challenge, reinforcing the perceived role of inducible HSP70 protein in molluscs. This study provides insights into the complex interactions of age and genotype in determining heat tolerance of a key mussel species. As marine temperatures increase, equally complex selection pressure responses may therefore occur. Future research should focus on transcriptomic and genomic approaches for key species such as
P. canaliculus
to further understand and predict the effect of genetic variation and ontogeny on their survival in the context of climate change.
Journal Article