Publications by authors named "Hart I"

Objective: To assess which decontamination method(s) used for the debridement of titanium surfaces (disks and dental implants) contaminated with bacterial, most efficiently eliminate bacterial biofilms.

Material And Methods: A systematic search was conducted in four electronic databases between January 1, 2010 and October 31, 2022. The search strategy followed the PICOS format and included only in vitro studies completed on either dental implant or titanium disk samples.

View Article and Find Full Text PDF
Article Synopsis
  • Factors driving freshwater salinization syndrome (FSS) include inputs of salt ions, erosion rates, hydrologic cycles, rising water temperatures, and ecosystem recovery potential.
  • These factors operate in distinct stages that lead to failures in critical ecosystem functions, such as providing clean drinking water, supporting agriculture, and maintaining biodiversity.
  • Future research should focus on diagnosing, predicting, and addressing FSS using the identified state factors and their stages.
View Article and Find Full Text PDF
Article Synopsis
  • Horses played a crucial role in Indigenous cultures in the American Southwest and Great Plains, but the timeline and methods of their integration remain debated.
  • A study analyzing historic horse remains combined genomic, isotopic, and other evidence, revealing strong genetic ties to Iberian horses, with later British influences.
  • By the early 17th century, horses were widely adopted in Indigenous societies, impacting herd management, ceremonies, and cultural practices before European observers arrived in the 18th century.
View Article and Find Full Text PDF

In this commentary, a practical system for estimating the prognosis for dental implants is presented. Evidence for factors influencing implant prognosis is reviewed. The system is based on the stability of implant supporting tissues as opposed to implant loss.

View Article and Find Full Text PDF

Background: Balo's concentric sclerosis (BCS) is a rare variant of multiple sclerosis (MS) that usually runs a benign course. Typically, brain magnetic resonance imaging (MRI) shows concentric lamella of areas of demyelination alternating with normal zones of myelin preservation. Clinically, it may be mistaken for other intracranial space-occupying lesions, especially in our subregion, where neuroimaging facilities are scarce or not affordable.

View Article and Find Full Text PDF

El Niño has profound influences on ecosystem dynamics. However, we know little about how it shapes vertebrate faunal community composition over centennial time scales, and this limits our ability to forecast change under projections of future El Niño events. On the basis of correlations between geological records of past El Niño frequency and the species composition of bird and fish remains from a Baja California bone deposit that spans the past 12,000 years, we documented marked faunal restructuring when major El Niño events occurred more than five times per century.

View Article and Find Full Text PDF

Objectives: Many patients with meningitis have no aetiology identified leading to unnecessary antimicrobials and prolonged hospitalisation. We used viral capture sequencing to identify possible pathogenic viruses in adults with community-acquired meningitis.

Methods: Cerebrospinal fluid (CSF) from 73 patients was tested by VirCapSeq-VERT, a probe set designed to capture viral targets using high throughput sequencing.

View Article and Find Full Text PDF

The transition from hunting to herding transformed the cold, arid steppes of Mongolia and Eastern Eurasia into a key social and economic center of the ancient world, but a fragmentary archaeological record limits our understanding of the subsistence base for early pastoral societies in this key region. Organic material preserved in high mountain ice provides rare snapshots into the use of alpine and high altitude zones, which played a central role in the emergence of East Asian pastoralism. Here, we present the results of the first archaeological survey of melting ice margins in the Altai Mountains of western Mongolia, revealing a near-continuous record of more than 3500 years of human activity.

View Article and Find Full Text PDF

Paraneoplastic neurological syndromes (PNS) are a group of rare and severe immune-mediated disorders that affect the nervous system in patients with cancer. The best way to diagnose a paraneoplastic neurological disorder is to identify anti-onconeural protein antibodies that are specifically associated with various cancers. The aim of this multicentric study was to clinically and immunologically characterize patients with PNS and study their association with cancer.

View Article and Find Full Text PDF
Article Synopsis
  • Classic models depict mounted herders in Inner Asia during the Bronze Age, but the actual economic practices of these early pastoral societies remain unclear.
  • This study uses collagen mass fingerprinting and ancient DNA to analyze early pastoral cultures in Mongolia, revealing evidence of livestock herding between the late 3rd and early 2nd millennia BCE.
  • Findings indicate horses weren't significantly exploited for diet until later, around 1200 BCE, after which they played a crucial role in pastoral life and mobility, connecting to broader changes in herding practices due to horseback riding innovations.
View Article and Find Full Text PDF

Objectives: Severe lower respiratory tract infection caused by adenovirus is well described in immunocompromised hosts and can cause significant morbidity and mortality. We compare and contrast the clinical presentation, radiological, and virological features of two rare cases in immunocompetent adults admitted to an intensive care unit in a large, teaching hospital in North West England. We then provide a concise, comprehensive literature review.

View Article and Find Full Text PDF

Disialosyl globopentaosylceramide (DSGb5) is often expressed by renal cell carcinomas. To investigate properties of DSGb5, we have prepared its oligosaccharide moiety by chemically synthesizing Gb5 which was enzymatically sialylated using the mammalian sialyltransferases ST3Gal1 and ST6GalNAc5. Glycan microarray binding studies indicate that Siglec-7 does not recognize DSGb5, and preferentially binds Neu5Acα(2,8)Neu5Ac containing glycans.

View Article and Find Full Text PDF

Objective: Thought suppression may not work effectively when people have a cognitive impairment. This study tests whether participants with dementia showed lessened or enhanced recall and recognition of dementia-related words compared with a control population.

Methods: Fifty participants living with dementia with mild levels of cognitive impairment and a control group of 52 participants without a diagnosis of dementia took part.

View Article and Find Full Text PDF

Appropriate segregation within manufacturing facilities is required by regulators and utilized by manufacturers to ensure that the final product has not been contaminated with (a) adventitious viruses, (b) another pre-/postviral clearance fraction of the same product, or (c) another product processed in the same facility. However, there is no consensus on what constitutes appropriate facility segregation to minimize these risks. In part, this is due to the fact that a wide variety of manufacturing facilities and operational practices exist, including single-product and multiproduct manufacturing, using traditional segregation strategies with separate rooms for specific operations that may use stainless steel or disposable equipment to more modern ballroom-style operations that use mostly disposable equipment (i.

View Article and Find Full Text PDF

Background: Viral meningitis is increasingly recognised, but little is known about the frequency with which it occurs, or the causes and outcomes in the UK. We aimed to determine the incidence, causes, and sequelae in UK adults to improve the management of patients and assist in health service planning.

Methods: We did a multicentre prospective observational cohort study of adults with suspected meningitis at 42 hospitals across England.

View Article and Find Full Text PDF

Receptor tyrosine kinases (RTKs) and integrins cooperate to stimulate cell migration and tumour metastasis. Here we report that an integrin influences signalling of an RTK, c-Met, from inside the cell, to promote anchorage-independent cell survival. Thus, c-Met and β1-integrin co-internalize and become progressively recruited on LC3B-positive 'autophagy-related endomembranes' (ARE).

View Article and Find Full Text PDF

We synthesized and evaluated a series of compounds for their allosteric modulation at the Kv11.1 (hERG) channel. Most compounds were negative allosteric modulators of [(3)H]dofetilide binding to the channel, in particular 7f, 7h-j and 7p.

View Article and Find Full Text PDF

Kv11.1 (hERG) blockers with comparable potencies but different binding kinetics might display divergent pro-arrhythmic risks. In the present study, we explored structure-kinetics relationships in four series of Kv11.

View Article and Find Full Text PDF

Background: CD56+ T cells previously have been identified as potentially cytotoxic lymphocytes, and relative numbers are increased in some infectious diseases.

Patients And Methods: Relative proportions of CD56+ T cells were measured by flow cytometry in groups of renal transplant patients differing in cytomegalovirus (CMV) status of donor (D) and recipient (R). These measurements were related to episodes of CMV viremia.

View Article and Find Full Text PDF

Background: Integrin αvβ6 promotes migration, invasion, and survival of cancer cells; however, the relevance and role of αvβ6 has yet to be elucidated in breast cancer.

Methods: Protein expression of integrin subunit beta6 (β6) was measured in breast cancers by immunohistochemistry (n > 2000) and ITGB6 mRNA expression measured in the Molecular Taxonomy of Breast Cancer International Consortium dataset. Overall survival was assessed using Kaplan Meier curves, and bioinformatics statistical analyses were performed (Cox proportional hazards model, Wald test, and Chi-square test of association).

View Article and Find Full Text PDF

Background: The emergence of influenza A(H1N1) 2009 was met with increased reports of associated neurological manifestations. We aimed to describe neurological manifestations of influenza in adults and children in the United Kingdom that presented at this time.

Methods: A 2-year surveillance study was undertaken through the British adult and pediatric neurological surveillance units from February 2011.

View Article and Find Full Text PDF

Human pancreatic ductal adenocarcinoma (PDAC) is characterized by early systemic dissemination. Although RhoC has been implicated in cancer cell migration, the relevant underlying molecular mechanisms remain unknown. RhoC has been implicated in the enhancement of cancer cell migration and invasion, with actions which are distinct from RhoA (84% homology), and are possibly attributed to the divergent C-terminus domain.

View Article and Find Full Text PDF