Publications by authors named "Barton Richard"

We describe 157 cases of Trichophyton indotineae infection in the United Kingdom, mostly in patients linked to southern Asia. T. indotineae is spreading in the United Kingdom and accounts for 38% of dermatophyte isolates referred to the UK National Mycology Reference Laboratory.

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  • Azoles, mainly used for treating recurrent vulvovaginal candidiasis (RVVC), have seen a notable increase in non-yeast infections and azole-resistant cases over a three-year study period in Leeds, UK.* -
  • A total of 5461 vaginal samples were analyzed, revealing that while the proportion of traditional yeast infections declined, non-candida yeast (NCAY) infections rose significantly, especially from 2.8% to 6.8% for one specific NCAY species.* -
  • There was a marked increase in fluconazole-resistant strains, making treatment challenging, with a shift in primary care protocols potentially contributing to this rise in resistance and NCAY prevalence.*
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  • Mesenchymal stromal cells (MSCs) grown as high-density sheets show potential for bioengineering, but prolonged culture leads to rapid aging, limiting their effectiveness.
  • This study investigated the effects of rapamycin on placental-derived MSCs (PMSCs) treated over 7 days, revealing that it enhances autophagy, reduces senescence, and lowers cell size and apoptosis rates.
  • Microarray analysis confirmed changes in gene expression, highlighting the upregulation of IL-8 and TGF-β signaling pathways, indicating that rapamycin could improve the healing properties of these cells in future bioengineering applications.
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Louisiana is historically one of the lowest-performing states in terms of health outcomes in the United States. Hurricane Katrina led to a decrease in available health care resources, with a larger impact on resources for those living below the poverty line. Subsequently, the coronavirus disease 2019 (COVID-19) pandemic has been shown to have had disproportionately large impacts on minority communities, uninsured populations, and rural communities-all of which are found in Louisiana.

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Background: Osteochondral autograft transfer (OAT) is a useful technique for full-thickness cartilage lesions of the distal femur. Various techniques recommend harvesting a plug 2 mm longer than the recipient hole to allow for graft impaction. Grafts with limited compressibility may not sit flush when impacted.

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Background: The implications on the choice of donor side when using the free fibula flap for reconstruction of unilateral maxillectomy defects has not been discussed in the literature so far.

Methods: A unilateral maxillectomy reconstruction was replicated using a 3D-printed skull model and fresh cadaveric dissections of left and right osteomyocutaneous fibula flaps for comparison. Detailed photo documentation was conducted to analyze and illustrate the anatomical differences of performing a reconstruction using the ipsilateral or contralateral sides and their relative benefits and risks.

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  • Infections from the fungal pathogen Aspergillus fumigatus are showing increasing resistance to standard azole antifungal treatments, yet there's limited knowledge on how patients acquire these drug-resistant strains from the environment.
  • A study analyzing 218 fungal isolates from the UK and Ireland revealed two main genetic groups (clades A and B), with most environmental resistance found in clade A and strong evidence of patients getting infections from environmental sources.
  • The research also identified genetic regions under positive selection that relate to azole resistance, highlighting the need for more understanding of how these fungi develop drug resistance, particularly in patients who are already vulnerable due to respiratory infections.
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Metabolic syndrome, obesity, and steatosis are characterized by a range of dysregulations including defects in ubiquitin ligase tagging proteins for degradation. The identification of novel hepatic genes associated with fatty liver disease and metabolic dysregulation may be relevant to unravelling new mechanisms involved in liver disease progression METHODS: Through integrative analysis of liver transcriptomic and metabolomic obtained from obese subjects with steatosis, we identified itchy E ubiquitin protein ligase (ITCH) as a gene downregulated in human hepatic tissue in relation to steatosis grade. Wild-type or ITCH knockout mouse models of non-alcoholic fatty liver disease (NAFLD) and obesity-related hepatocellular carcinoma were analyzed to dissect the causal role of ITCH in steatosis RESULTS: We show that ITCH regulation of branched-chain amino acids (BCAAs) degradation enzymes is impaired in obese women with grade 3 compared with grade 0 steatosis, and that ITCH acts as a gatekeeper whose loss results in elevation of circulating BCAAs associated with hepatic steatosis.

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Background: The gut microbiome and iron status are known to play a role in the pathophysiology of non-alcoholic fatty liver disease (NAFLD), although their complex interaction remains unclear.

Results: Here, we applied an integrative systems medicine approach (faecal metagenomics, plasma and urine metabolomics, hepatic transcriptomics) in 2 well-characterised human cohorts of subjects with obesity (discovery n = 49 and validation n = 628) and an independent cohort formed by both individuals with and without obesity (n = 130), combined with in vitro and animal models. Serum ferritin levels, as a markers of liver iron stores, were positively associated with liver fat accumulation in parallel with lower gut microbial gene richness, composition and functionality.

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Study Design: Biomechanical investigation.

Objective: To compare the biomechanical performance of nitinol memory metal rods and titanium rods when used as posterior spinal instrumentation in a synthetic model.

Methods: Biomechanical testing was performed using ultra-high-molecular-weight polyethylene blocks.

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The purpose of this paper is to describe the rebar repair as a technique for repair of radial meniscus tears and compare the rebar technique with current techniques used for meniscus repairs. This technique consists of 4 sutures placed with the inside-out technique. First, the vertical mattress reinforcement sutures are placed anteriorly and posteriorly to the tear.

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Background & Aims: Atherosclerosis is characterized by an inflammatory disease linked to excessive lipid accumulation in the artery wall. The Notch signalling pathway has been shown to play a key regulatory role in the regulation of inflammation. Recently, in vitro and pre-clinical studies have shown that apolipoprotein A-I binding protein (AIBP) regulates cholesterol metabolism (SREBP) and NOTCH signalling (haematopoiesis) and may be protective against atherosclerosis, but the evidence in humans is scarce.

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Unlabelled: Studies of mobility during critical illness have mostly examined transitions from immobility (passive activities) or limited mobility to active "early mobility."

Design: Observational analysis of a quality improvement initiative.

Setting: Two ICUs (surgical ICU, cardiovascular ICU) at a tertiary academic medical center.

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Cerebral abscess due to pigmented molds is a rare but usually fatal infection occasionally seen in transplant recipients. A 67-year-old man of Iraqi origin underwent a deceased donation renal transplant for renal failure and 2 months later was diagnosed with an abscess in the left posterior frontal lobe of his brain. Subsequent biopsy proved this to be due to the mold Rhinocladiella mackenziei.

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  • The study aims to improve the diagnosis of aspergillosis in cystic fibrosis (CF) patients by evaluating the IgE responses to various pure Aspergillus fumigatus proteins, addressing challenges of overlapping disease features and antibody reactivity.
  • Serum IgE and IgG levels were analyzed in 36 CF patients (divided into groups with allergic bronchopulmonary aspergillosis, Aspergillus sensitization, and Aspergillus bronchitis) against five recombinant antigens.
  • Results indicated that patients with allergic bronchopulmonary aspergillosis had higher IgE responses to specific antigens, suggesting that using multiple recombinant antigens could enhance diagnostic accuracy and help direct antifungal treatment, particularly with Asp f1 as a potential
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Purpose: To compare the neurovascular proximity of the transpatellar portal with that of the medial and lateral portals and to determine the safe penetration depth for an all-inside device for use on the posterior horn lateral meniscus.

Methods: Dissection of the popliteal fossa was performed in 10 cadaveric knees to identify all structures. Arthroscopy was performed using penetration depths of 10, 12, 14, and 16 mm with the all-inside system through the anteromedial, anterolateral, and transpatellar portals.

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Background: The high incidence of gastrointestinal bleeding (GIB) in patients with ventricular assist devices (VAD) is well known, but there is limited evidence to support the use of proton pump inhibitors (PPIs) or histamine receptor antagonists (H2RA) for preventing GIB in patients with VAD.

Materials And Methods: The surgical ICU and VAD databases within a large regional academic cardiac mechanical support and transplant center were queried for patients who underwent VAD implantation between 2010 and 2014. An observational cohort study was conducted to identify which acid suppressing drug regimen was associated with the fewest number of GIB events within 30 d after VAD implantation: PPI, H2RA, or neither.

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Background: Unplanned intensive care unit readmission within 72 hours is an established metric of hospital care quality. However, it is unclear what factors commonly increase the risk of intensive care unit readmission in surgical patients. The objective of this study was to evaluate predictors of readmission among a diverse sample of surgical patients and develop an accurate and clinically applicable nomogram for prospective risk prediction.

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Compare the duration of mechanical ventilation between patients receiving sedation with continuous infusions of propofol alone or combination with the use of dexmedetomidine and propofol. Retrospective, propensity matched (1:1) cohort study, employing eight variables chosen a priori for matching. Timing of exposure to dexmedetomidine initiation was incorporated into a matching algorithm.

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In the version of this article originally published, the received date was missing. It should have been listed as 2 January 2018. The error has been corrected in the HTML and PDF versions of this article.

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Hepatic steatosis is a multifactorial condition that is often observed in obese patients and is a prelude to non-alcoholic fatty liver disease. Here, we combine shotgun sequencing of fecal metagenomes with molecular phenomics (hepatic transcriptome and plasma and urine metabolomes) in two well-characterized cohorts of morbidly obese women recruited to the FLORINASH study. We reveal molecular networks linking the gut microbiome and the host phenome to hepatic steatosis.

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Dermatophytes include fungal species that infect humans, as well as those that also infect other animals or only grow in the environment. The dermatophyte species is a frequent cause of skin infection in immunocompetent individuals. While members of the species complex have been further categorized based on various morphologies, their population structure and ability to undergo sexual reproduction are not well understood.

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Scope: To examine the potential relationship among gene expression markers of adipose tissue browning, gut microbiota, and insulin sensitivity in humans.

Methods And Results: Gut microbiota composition and gene markers of browning are analyzed in subcutaneous (SAT) and visceral (VAT) adipose tissue from morbidly obese subjects (n = 34). Plasma acetate is measured through H NMR and insulin sensitivity using euglycemic hyperinsulinemic clamp.

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