Publications by authors named "Simkins J"

Introduction: In Solid Organ Transplant (SOT) recipients, due to immunosuppression, the immunogenicity after COVID-19 vaccination is suboptimal and its durability is unknown.

Methods: We conducted a post-hoc analysis of a patient-blinded, single center, randomized controlled trial comparing BNT162b2 vs JNJ-78,436,735 as the third dose after two doses of BNT162b2 in adult SOT recipients with active graft to compare long-term immunogenicity.

Results: Forty-one recipients were analyzed.

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Article Synopsis
  • The study aimed to evaluate and summarize knee bracing interventions from randomized controlled trials (RCTs) focused on knee osteoarthritis (OA).
  • A scoping review identified 31 RCTs with 47 different bracing types, highlighting variations in the type and use of braces, but poor reporting on brace adherence and contextual details.
  • The review concluded that the diversity of interventions, along with gaps in adherence focus and reporting, may be leading to inconsistent findings and recommendations regarding the effectiveness of knee bracing for OA.
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Objective: To investigate whether duration of knee symptoms influenced the magnitude of the effect of exercise therapy compared to non-exercise control interventions on pain and physical function in people with knee osteoarthritis (OA).

Method: We undertook an individual participant data (IPD) meta-analysis utilising IPD stored within the OA Trial Bank from randomised controlled trials (RCTs) comparing exercise to non-exercise control interventions among people with knee OA. IPD from RCTs were analysed to determine the treatment effect by considering both study-level and individual-level covariates in the multilevel regression model.

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  • Solid organ transplant recipients (SOTRs) face a heightened risk of nocardiosis, a serious opportunistic infection, with a study showing only 0.2% (13 out of 6179) of cases diagnosed over 10 years.
  • Most patients were male (76.9%), primarily kidney transplant recipients (62%), with infections typically diagnosed around 8.8 months post-transplant.
  • The one-year mortality rate after diagnosis was 46%, while low recurrence rates suggest that trimethoprim-sulfamethoxazole (TMP-SMX) prophylaxis might be effective in reducing the incidence of this infection.
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Significance: Luminopsins (LMOs) are bioluminescent-optogenetic tools with a luciferase fused to an opsin that allow bimodal control of neurons by providing both optogenetic and chemogenetic access. Determining which design features contribute to the efficacy of LMOs will be beneficial for further improving LMOs for use in research.

Aim: We investigated the relative impact of luciferase brightness, opsin sensitivity, pairing of emission and absorption wavelength, and arrangement of moieties on the function of LMOs.

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complex (MABC), a rapidly growing , is one of the most common causes of non-tuberculous mycobacteria (NTM) infections in the United States of America, and it has been associated with a wide spectrum of infections in immunocompetent and immunosuppressed individuals. Eradicating MABC is very challenging, even with prolonged combination therapies. The management of MABC infections in solid organ transplant (SOT) patients is usually complex given their net state of immunosuppression, associated comorbidities, and potential drug-drug interactions, among other things.

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Introduction: Osteoarthritis is the commonest form of chronic joint pain, which patients often self-manage before seeking healthcare advice. Patients frequently seek advice from community pharmacies, and a recent policy has recommended integrating community pharmacies into long-term condition pathways. This study explored community pharmacy teams' (CPs) and other healthcare professionals' (HCPs) views on community pharmacies providing an extended role for osteoarthritis management, identifying potential barriers and facilitators to this.

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Background: Osteoarthritis is a common, painful and disabling long-term condition. Delivery of high-quality guideline-informed osteoarthritis care that successfully promotes and maintains supported self-management is imperative. However, osteoarthritis care remains inconsistent, including under use of core non-pharmacological approaches of education, exercise and weight loss.

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Significance: Luminopsins (LMOs) are bioluminescent-optogenetic tools with a luciferase fused to an opsin that allow bimodal control of neurons by providing both optogenetic and chemogenetic access. Determining which design features contribute to the efficacy of LMOs will be beneficial for further improving LMOs for use in research.

Aim: We investigated the relative impact of luciferase brightness, opsin sensitivity, pairing of emission and absorption wavelength, and arrangement of moieties on the function of LMOs.

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Objective: Using a qualitative design, this study aimed to explore the experience of physiotherapists' supporting patient health literacy in clinical practice, gain an understanding of their conceptualisation of health literacy, and make recommendations for improving health literacy support in clinical practice.

Methods: Convenience sampling via social media was used to recruit eight participants who were all physiotherapists practicing in the United Kingdom. Semi-structured interviews took place on Zoom during the second Covid-19 lockdown.

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The latent viral reservoir (LVR) remains a major barrier to HIV-1 curative strategies. It is unknown whether receiving a liver transplant from a donor with HIV might lead to an increase in the LVR because the liver is a large lymphoid organ. We found no differences in intact provirus, defective provirus, or the ratio of intact to defective provirus between recipients with ART-suppressed HIV who received a liver from a donor with (n = 19) or without HIV (n = 10).

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Background: Supported self-management interventions for patients with musculoskeletal (MSK) conditions may not adequately support those with limited health literacy, leading to inequalities in care and variable outcomes. The aim of this study was to develop a model for inclusive supported self-management intervention(s) for MSK pain that take account of health literacy.

Methods: A mixed methods study with four work-packages was conducted: work package 1: secondary analysis of existing data to identify potential targets for intervention; work package 2: evidence synthesis to assess effective components of self-management interventions taking into account health literacy; work package 3: views of community members and healthcare professionals (HCPs) on essential components; work package 4: triangulation of findings and an online modified Delphi approach to reach consensus on key components of a logic model.

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Background: Cytomegalovirus (CMV) infection is one of the most common posttransplantation infections and has been associated with increased rejection and mortality. Data in intestinal transplants recipients are limited.

Methods: This is a single-center, retrospective cohort study of all intestinal transplants performed between January 1, 2009, and August 31, 2020.

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Solid Organ Transplant (SOT) recipients are at significant higher risk for COVID-19 and due to immunosuppressive medication, the immunogenicity after vaccination is suboptimal. In the previous studies, booster method showed significant benefit in this population. In the current study, we compared using a mix-and-match method vs.

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Background: Management of infections due to carbapenemase-resistant Enterobacterales (CRE) in solid organ transplant (SOT) recipients remains a difficult challenge. The INCREMENT-SOT-CPE score has been specifically developed from SOT recipients to stratify mortality risk, but an external validation is lacking.

Methods: Multicenter retrospective cohort study of liver transplant (LT) recipients colonized with CRE infection who developed infection after transplant over 7-year period.

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Article Synopsis
  • This study looked at adult intestinal transplant recipients from 2016 to 2020, focusing on those with existing lung nodules to see if they were at higher risk for infections post-transplant.
  • Out of 44 patients, 31 had preexisting lung nodules, but only a few infections were noted after the transplant, including one case of probable invasive aspergillosis.
  • The study concluded that while many patients had nodules, they weren't directly linked to infections post-transplant, prompting recommendations for follow-up but not routine pretransplant scans for all patients.
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  • - The study analyzed the outcomes of adult solid organ transplant recipients infected with different respiratory viruses, including SARS-CoV-2, during the pandemic from 2019 to 2020
  • - Among 377 recipients, those infected with SARS-CoV-2 showed significantly higher rates of ICU admission, mechanical ventilation, and mortality compared to those infected with seasonal coronaviruses, RSV, or influenza
  • - Risk factors for worse outcomes included older age and SARS-CoV-2 infection, with lower respiratory tract infections being prevalent among the recipients.
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Solid organ transplant (SOT) recipients are at high risk for severe disease with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Emerging variants of concern have disproportionately affected this population. Data on severity and outcomes with the Omicron variant in SOT recipients are limited.

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Background: is increasingly recognized as a human pathogen causing life-threatening infections in immunocompromised patients. There is a paucity of data around this topic in solid organ transplant (SOT) recipients.

Methods: This work was a single-center retrospective cohort study of all SOT recipients with a positive culture for between 2013 and 2018.

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The use of left ventricular assist devices (LVADs) is increasingly more common as the availability of donor organs in relation to failing hearts is outstandingly limited. Infections are the most common complications in LVAD recipients, particularly those caused by Staphylococcus spp. Refractory LVAD-related infections are not uncommon as achieving adequate source control is often not feasible before heart transplantation.

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