Publications by authors named "Fisher P"

Introduction: Metastasis is a principal cause of patient morbidity and death from solid cancers with current therapies being inadequate.

Areas Covered: Detailed genomic analyses document mutational differences between the initial tumor and metastatic clones, posing a challenge to current targeted therapies, which focus predominantly on the phenotype of primary tumors. Considering the diverse signaling cascades and numerous compensatory pathways in metastasis, designing broad-spectrum anti-metastatic therapies remains challenging.

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Background: Psilocybin, a serotonin 2A receptor agonist with psychedelic properties, shows promise as a novel treatment for alcohol use disorder (AUD). While current studies involve two dosing sessions, the effects of a single dose have not been investigated.

Aims: To investigate the pharmacokinetics, feasibility, safety and efficacy of single-dose psilocybin therapy in AUD.

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Psilocin, the active metabolite of psilocybin, is a psychedelic and agonist at the serotonin 2A receptor (5-HT2AR) that has shown positive therapeutic effects for brain disorders such as depression. To elucidate the brain effects of psilocybin, we directly compared the acute effects of 5-HT2AR agonist (psilocybin) and antagonist (ketanserin) on cerebral blood flow (CBF) using pseudo-continuous arterial spin labeling magnetic resonance imaging (MRI) in a single-blind, cross-over study in 28 healthy participants. We evaluated associations between plasma psilocin level (PPL) or subjective drug intensity (SDI) and CBF.

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We report the properties of precision time structures of cosmic nuclei He, Li, Be, B, C, N, and O fluxes over an 11-year solar cycle from May 2011 to November 2022 in the rigidity range from 1.92 to 60.3 GV.

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We present results over an 11-year Solar cycle of cosmic antiprotons based on 1.1×10^{6} events in the rigidity range from 1.00 to 41.

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Introduction: Patients with mood disorders, especially, major depressive disorder (MDD) and bipolar disorder (BD), are at heightened risk of relapse and psychiatric rehospitalizations. Therefore, there is an urgent need to identify modifiable biomarkers to inform personalized and intensified prevention strategies for those at the greatest risk of relapse and hospital readmissions. Brain structural measures subserving cognitive function hold particular promise among potential predictive biomarkers.

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Introduction: The midwifery workforce is essential for delivering safe, high-quality maternity care, however, global staffing shortages pose significant challenges. To address these issues, incorporating midwifery assistants, including undergraduate midwifery students into the model of care has been proposed as a strategy to support midwives and maintain effective service delivery.

Aim: This study explores the Registered Midwives' experiences working with Midwifery Assistants (MAs) in an Australian tertiary maternity service.

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Purpose: Off-the-shelf, allogeneic CD19 chimeric antigen receptor (CAR) T cell products may improve access to treatment versus autologous ones. We report the phase 1 experience of the allogeneic CD19 CAR T-cell product cemacabtagene ansegedleucel (cema-cel) and its predecessor, ALLO-501, in CD19 CAR T-naive patients with relapsed/refractory large B-cell lymphoma (R/R LBCL).

Patients And Methods: In the ALPHA2/ALPHA studies, safety and efficacy of allogeneic CD19 CAR T cells were evaluated in CD19 CAR T treatment-naive patients with R/R LBCL.

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We conducted a genome-wide association study on income among individuals of European descent (N = 668,288) to investigate the relationship between socio-economic status and health disparities. We identified 162 genomic loci associated with a common genetic factor underlying various income measures, all with small effect sizes (the Income Factor). Our polygenic index captures 1-5% of income variance, with only one fourth due to direct genetic effects.

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Objective: Although extant research points to nonverbal learning disability (NVLD) as a distinct disorder, it is not included in the diagnostic nomenclatures, and there is heterogeneity in how it is defined. A working group was formed to gain consensus on a standard DSM-type definition for NVLD, a necessary first step for proposing its inclusion in future DSM editions, and the disorder was renamed to better reflect the core deficit-visual-spatial problems.

Method: An iterative process was used to reach consensus on a DSM-style criteria set that reconceptualizes NVLD as developmental visual-spatial disorder (DVSD).

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Background: The psychological impact of surviving an admission to an intensive care unit (ICU) with COVID-19 is uncertain. The objective of the study was to assess the prevalence of anxiety, depression and post-traumatic stress disorder (PTSD) symptoms in ICU survivors treated for COVID-19 infection, and identify risk factors for psychological distress.

Methods: This observational study was conducted at 52 ICUs in the United Kingdom.

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Background: The training of clinical psychologists is conducted by staff, trainees, service users and carers. Often those working in clinical psychology do so due to their own lived experiences. These stakeholders may require having to navigate both personal and professional identities.

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Objective: This study explored parents' experiences of the transition of responsibility to their child for healthcare decisions relating to their cleft lip and/or palate (CL/P).

Methods: Online semi-structured interviews were conducted with 11 participants (six females and five males, aged 41 to 60 years). They were parents of young people who had decided whether to undergo orthognathic surgery.

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The continuous rise in skin cancer incidence highlights an imperative for improved skin cancer prevention. Topical calcipotriol-plus-5-fluorouracil (calcipotriol-plus-5-FU) immunotherapy effectively eliminates precancerous skin lesions and prevents squamous cell carcinoma (SCC) in patients. However, its mechanism of action remains unclear.

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Introduction: Long COVID is a debilitating condition that lasts for more than three months post-infection by SARS-CoV-2. On average, one in ten individuals infected with SARS CoV- 2 develops Long COVID worldwide. A knowledge gap exists in our understanding of the mechanisms, genetic risk factors, and biomarkers that could be associated with Long COVID.

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Article Synopsis
  • The study investigates how cancer cells influence the fitness of surrounding tumor microenvironment (TME) cells through a mechanism involving a long non-coding RNA called Tu-Stroma, which alters the expression of Flower isoforms, impacting their growth advantage.
  • The expression of Flower Win isoforms in cancer cells enhances their dominance over TME cells that express Flower Lose isoforms, leading to reduced fitness in the TME.
  • Targeting Flower proteins with a humanized monoclonal antibody in mice has shown promising results, significantly reducing cancer growth and metastasis while improving survival rates and protecting organs from potential lesions.
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Background: Using [F]altanserin, a serotonin 2A receptor (5-HTR) antagonist Positron Emission Tomography (PET) tracer, a positive association between cortical 5-HTR binding and the inward-directed facets of neuroticism has been demonstrated in healthy individuals. Psilocybin, a 5-HTR agonist, shows promise for the treatment of depression, reducing neuroticism and mood symptoms potentially via hypothalamic-pituitary-adrenal (HPA) modulation. 5-HTR and neuroticism are both modulated by HPA axis function.

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Article Synopsis
  • - Serotonin reuptake inhibitors may help boost memory and increase hippocampal volume in patients with Major Depressive Disorder (MDD), particularly through the involvement of the 5-HT4 receptor. - In a study with 91 patients, significant reductions in hippocampal volume were observed after 8 weeks of treatment, especially in those responding well to the antidepressant escitalopram. - The research indicated a negative relationship between 5-HT4 receptor binding and hippocampal volume in females, suggesting a complex interaction that needs further exploration to understand its impact on memory and brain plasticity in MDD.
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Article Synopsis
  • This study investigates the effects of different serotonin 2A receptor (5-HTR) agonists, such as psilocybin, lisuride, and 25CN-NBOH, to understand their potential in psychedelic drug applications.
  • Using advanced imaging techniques like PET and phMRI on nonhuman primates, the researchers evaluated how these agonists affect brain blood flow and receptor occupancy.
  • Findings suggest that mixed agonists like psilocybin and lisuride create complex blood volume responses while 25CN-NBOH leads to simpler responses, shedding light on how these drugs could be used to treat psychiatric disorders.
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Disorder and flexibility in protein structures are essential for biological function but can also contribute to diseases, such as neurodegenerative disorders. However, characterizing protein folding on a proteome-wide scale within biological matrices remains challenging. Here we present a method using a bifunctional chemical probe, named TME, to capture in situ, enrich and quantify endogenous protein disorder in cells.

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H3K27M-mutant diffuse midline gliomas (DMGs) express high levels of the disialoganglioside GD2 (ref. ). Chimeric antigen receptor-modified T cells targeting GD2 (GD2-CART) eradicated DMGs in preclinical models.

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Background: Generalized Anxiety Disorder (GAD) is prevalent among people with HIV and is associated with adverse health outcomes. This study investigates the suitability of the Generalized Anxiety Disorder Scale-7 item (GAD-7) screening tool and its 2-item (GAD-2) version for use in young adults with perinatally-acquired HIV (YAPHIV) and young adults perinatally exposed to HIV but uninfected (YAPHEU).

Methods: Data come from the 7th follow-up interview (FU7) from a longitudinal study of youth with PHIV and PHEU, first recruited when 9-16 years.

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MDA-9/Syntenin, a key scaffolding protein and a molecular hub involved in a diverse range of cell signaling responses, has proved to be a challenging target for the design and discovery of small molecule probes. In this paper, we report on the design and synthesis of small molecule ligands of this key protein. Genetic algorithm-based computational design and the five-eight step synthesis of three molecules led to ligands with affinities in the range of 1-3 µM, a 20-60-fold improvement over literature reports.

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