Publications by authors named "Hobson A"

Introduction: High-resolution manometry (HRM) allows assessment of esophagogastric junction (EGJ) disruption. While type 3 EGJ predicts definitive gastroesophageal reflux disease (GERD), type 2 EGJ is less clearly implicated in GERD pathogenesis. This study aimed to characterize physiologic findings in type 2 EGJ to determine if the HRM-based Milan Score can define GERD within type 2 EGJ.

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As more neonatal centers are caring for premature infants at 21-23 weeks' gestational age (GA), a growing need for improved practices related to routine skin care exists. Approach to skin care in this GA is challenging because the skin barrier is not completely formed at this developmental stage, leading to an increased risk of insensible water loss; increased sodium and nutritional requirement; and greater susceptibility to injury, infection, and temperature instability. Effective skin care in this population requires a proactive, standardized, multidisciplinary approach.

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Guidelines specify that clinicians should support patients living with obesity by referring to weight management programmes (WMPs), but clinicians do so infrequently. To provide additional support to patients living with obesity and weight-related conditions, the UK government instated the National Enhanced Service (NES) for weight management in England, including a reimbursement to general practices for referring eligible patients to WMPs. To assess the impact of the NES on conversations regarding weight and relevant behavioural risk factors in primary care consultations we recruited 11 medical practices in England where the NES was operating and six comparator practices from Scotland and Wales where the NES was not implemented.

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Article Synopsis
  • Polycystic ovary syndrome (PCOS) is prevalent among women of reproductive age and often linked to obesity, with clinical guidelines recommending weight loss to manage symptoms, although its effectiveness remains uncertain.* -
  • This study aimed to assess the impact of weight loss interventions on various clinical features of PCOS against standard care, using a systematic review of randomized controlled trials.* -
  • Results indicated that weight loss interventions led to significant improvements in insulin resistance, hormone levels, and menstrual regularity, while showing no significant negative effects on participants.*
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Service users living with Obsessive compulsive disorder (OCD) often delay or avoid seeking diagnosis or treatment because of a fear of judgement or feelings of shame associated with their obsessions and compulsions. They may feel that their behaviour defies societal norms, which can lead to social isolation, and in turn, further contribute to health inequality. When such individuals present with physical illness and are seen by district nurses, it is imperative that behaviours are understood and approached appropriately.

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A structure determination of the commensurate phase formed by 7,7,8,8-tetracyano-2,3,5,6-tetrafluoroquinodimethane (FTCNQ) absorbed on Ag(111) is reported. Initial characterization was performed using low-energy electron diffraction and synchrotron radiation photoelectron spectroscopy, with quantitative structural data being provided by normal incident X-ray standing waves (NIXSW) and surface X-ray diffraction (SXRD). NIXSW data show the FTCNQ molecule to adopt a "twisted" conformation on the surface, previously found to be associated with metal adatom incorporation into a 2d-metal-organic framework for FTCNQ on Au(111), Ag(100), and Cu(111).

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  • - A virtual library of substituted benzoic acid analogues was created to explore the atropisomers of GSK866, a non-steroidal glucocorticoid receptor modulator, using torsion angle scans to find stable compounds.
  • - After synthesizing the compounds, analysis confirmed that two compounds (13 and 14) existed as stable atropisomer pairs (13a, 13b, 14a, and 14b), matching earlier predictions.
  • - Screening in a glucocorticoid receptor assay revealed that one compound from each atropisomer pair was significantly more effective, while docking studies helped determine the stereochemistry of the most potent compounds 13a and 14b.
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  • Researchers discovered a new glucocorticoid receptor modulator (GRM) that uses a thioester payload, designed to be quickly processed by the liver to reduce overall exposure in the body.
  • This new payload clears from the system 10 times faster than earlier versions, leading to much lower drug levels and less risk of systemic effects.
  • The antibody-drug conjugate demonstrated significant effectiveness in reducing inflammation in various mouse models, indicating potential for effective subcutaneous administration and applications in treating inflammatory diseases.
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  • Researchers developed an anion exchange chromatography (AIEX) method, alongside traditional methods, to analyze and purify antibody-drug conjugates (ADCs) due to the increasing need for precise drug-antibody ratios (DAR).
  • The analytical toolbox they created includes various methods like hydrophobic interaction chromatography (HIC), reverse phase (RP), and mass spectrometry (MS) to ensure high-quality ADC DAR profiles for better therapeutic outcomes.
  • The study found that AIEX can effectively separate DAR4 positional isomers, a capability not offered by HIC, highlighting the importance of choosing the right analytical method based on drug-linker structures.
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Glucocorticoids are key components of the standard-of-care treatment regimens for B-cell malignancy. However, systemic glucocorticoid treatment is associated with several adverse events. ABBV-319 is a CD19-targeting antibody-drug conjugate engineered to reduce glucocorticoid-associated toxicities while possessing 3 distinct mechanisms of action (MOA) to increase therapeutic efficacy: (1) antibody-mediated delivery of a glucocorticoid receptor modulator (GRM) payload to activate apoptosis, (2) inhibition of CD19 signaling, and (3) enhanced fragment crystallizable (Fc)-mediated effector function via afucosylation of the antibody backbone.

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Introduction: The study goal was to understand telemedicine's role in improving access to rural specialty care. Other outcomes included assessing specialty availability and frequency of referrals at rural sites.

Methods: This mixed methods study included surveys and semi-structured interviews of rural primary care physicians (PCPs).

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Background: Rumination is characterized by the repeated regurgitation of food. Rumination syndrome is a disorder of gut-brain interaction diagnosed by Rome criteria, whereas rumination disorder is a feeding and eating disorder diagnosed by DSM-5 criteria. We aimed to determine the global prevalence of rumination according to these criteria across all age groups.

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Objective: A definitive diagnosis of gastroesophageal reflux disease (GERD) depends on endoscopic and/or pH-study criteria. However, high resolution manometry (HRM) can identify factors predicting GERD, such as ineffective esophageal motility (IEM), esophago-gastric junction contractile integral (EGJ-CI), evaluating esophagogastric junction (EGJ) type and straight leg raise (SLR) maneuver response. We aimed to build and externally validate a manometric score (Milan Score) to stratify the risk and severity of the disease in patients undergoing HRM for suspected GERD.

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Antibody-drug conjugates (ADCs) comprise 3 components of wildly differing sizes: antibody (150 000 Da), linker (typically <500 Da) and payload (typically <500 Da). While the drug-linker makes up only a small percent of the ADC it has a disproportionately massive impact on all aspects of the ADC. Replacing maleimide with bromoacetamide (BrAc) affords stable attachment of the linker to the antibody cysteine, supports total flexibility for linker design and affords a more homogenous ADC.

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Article Synopsis
  • - Glucocorticoid receptor modulators (GRMs) are effective in treating various diseases and are being explored as components in antibody-drug conjugates (ADCs) for cancer and immune diseases.
  • - The crystal structure of the GRM compound 2 shows important hydrogen bonds with the glucocorticoid receptor, which offer insights for optimizing ADC design.
  • - The study emphasizes the need to reduce the hydrophobic surface area of ADC payloads to prevent issues like aggregation, illustrated by comparing different acetal compounds.
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Glucocorticoids (GCs) are efficacious drugs used for treating many inflammatory diseases, but the dose and duration of administration are limited because of severe side effects. We therefore sought to identify an approach to selectively target GCs to inflamed tissue. Previous work identified that anti-tumor necrosis factor (TNF) antibodies that bind to transmembrane TNF undergo internalization; therefore, an anti-TNF antibody-drug conjugate (ADC) would be mechanistically similar, where lysosomal catabolism could release a GC receptor modulator (GRM) payload to dampen immune cell activity.

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Maleimide chemistry is widely used in antibody-drug conjugate (ADC) generation to connect drugs to antibodies through a succinimide linker. The resulting ADC is prone to payload loss a reverse Michael reaction, leading to premature drug release . Complete succinimide hydrolysis is an effective strategy to overcome the instability of ADC.

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Side chains of natural occurring amino acids vary greatly in terms of charge state, polarity, size and hydrophobicity. Using a linear synthetic route, two amino acids were sequentially coupled to a potent glucocorticoid receptor modulator (GRM) to afford a library of dipeptide-GRM linker payloads with a range of properties. The linker payloads were conjugated to a mouse anti-TNF antibody through interchain disulfide Cys.

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Objective: The objective of this study was to investigate whether pausing a weight loss program for a defined period of time could enhance weight loss and reduce attrition.

Methods: Five databases and two trial registries were searched from inception to July 2023. Randomized-controlled trials of adults with overweight and/or obesity were included if they compared planned-pause interventions with continuous energy restriction (CER), usual care, or a minimal intervention.

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Background: Interventions targeting the nutritional quality of grocery shopping have the potential to help improve diet and health outcomes.

Objective: This study aims to assess the feasibility and acceptability of receiving advice on healthier food purchases through SwapSHOP, a behaviorally informed smartphone app that allows users to scan barcodes of grocery products from the United Kingdom, providing nutritional information and personalized swap suggestions to encourage healthier purchases.

Methods: We randomized adult volunteers in a 6-arm parallel-group controlled feasibility trial.

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Background: Standardisation of referral pathways and the transfer of patients with acute aortic syndromes (AAS) to regional centres are recommended by NHS England in the Acute Aortic Dissection Toolkit. The aim of the Transfer of Thoracic Aortic Vascular Emergencies to Regional Specialist INstitutes Group study was to establish an interdisciplinary consensus on the interhospital transfer of patients with AAS to specialist high-volume aortic centres.

Methods: Consensus on the key aspects of interhospital transfer of patients with AAS was established using the Delphi method, in line with Conducting and Reporting of Delphi Studies guidelines.

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For many years, antibody drug conjugates (ADC) have teased with the promise of targeted payload delivery to diseased cells, embracing the targeting of the antibody to which a cytotoxic payload is conjugated. During the past decade this promise has started to be realised with the approval of more than a dozen ADCs for the treatment of various cancers. Of these ADCs, brentuximab vedotin really laid the foundations of a template for a successful ADC with lysosomal payload release from a cleavable dipeptide linker, measured DAR by conjugation to the Cys-Cys interchain bonds of the antibody and a cytotoxic payload.

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The results of a quantitative experimental structural investigation of the adsorption phases formed by 2,3,5,6-tetrafluoro-7,7',8,8'-tetracyanoquinodimethane (FTCNQ) on Cu(111) are reported. A particular objective was to establish whether Cu adatoms are incorporated into the molecular overlayer. A combination of normal incidence X-ray standing waves, low-energy electron diffraction, scanning tunneling microscopy, and X-ray photoelectron spectroscopy measurements, complemented by dispersion-inclusive density functional theory calculations, demonstrates that FTCNQ on Cu(111) does cause Cu adatoms to be incorporated into the overlayer to form a two-dimensional metal-organic framework (2D-MOF).

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Background: Probiotic supplements, by definition, provide a benefit to the host, but few studies have investigated the effect of probiotic supplements in healthy adult populations.

Purpose: The present, single arm, open label clinical trial, evaluated compositional and functional changes in the fecal microbiome of healthy adults after supplementation with a 14-strain probiotic.

Methods: We analysed the effect of a 14-strain probiotic blend ( NCIMB 30223, NCIMB 30179, NCIMB 30180, NCIMB 30181, NCIMB 30182, NCIMB 30184, subsp.

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