Publications by authors named "Andreis F"

The most characteristic feature of the human electroencephalogram is the peak alpha frequency (PAF). While PAF has been proposed as a biomarker in several diseases and disorders, the disease mechanisms modulating PAF, as well as its physiological substrates, remain elusive. This has partly been due to challenges related to experimental manipulation and invasive procedures in human neuroscience, as well as the scarcity of animal models where PAF is consistently present in resting-state.

View Article and Find Full Text PDF

Purpose: Despite the success of immune checkpoint inhibitors (ICI) across various cancers, their efficacy in metastatic castration-resistant prostate cancer (mCRPC) is modest, except for a subset of patients who experience significant, yet unpredictable, benefits. DNA repair defects (DRD) are associated with higher neoantigen load, which may predict response. Our study explored the potential of DRD for enhanced responsiveness to the ICI nivolumab.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to create a long-term pain model using long-term potentiation in pigs to better understand pain mechanisms.
  • Researchers recorded brain activity in pigs before, during, and after stimulating the ulnar nerve with high-frequency stimulation (HFS) while also measuring their sensitivity to pain.
  • Results showed that mechanical sensitivity increased significantly after HFS and correlated with changes in brain activity, suggesting that the pig model closely mimics human pain conditions.
View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to track the development of ischemic stroke in pigs using intracortical recordings for high-resolution feedback on neural function, which could help in optimizing drug treatments.
  • Micro-electrode arrays were implanted into the pigs’ brains, and ischemic stroke was induced through a specific chemical injection, with neural responses measured continuously over time.
  • Results showed a significant decrease in cortical excitability after stroke, and the findings suggest that this pig model can bridge the gap between rodent studies and human applications for developing neuroprotective therapies.
View Article and Find Full Text PDF

Background: Little research exists on extending ex-vivo systems to large animal nerves, and to the best of our knowledge, there has yet to be a study comparing these against in-vivo data. This paper details the first ex-vivo system for large animal peripheral nerves to be compared with in-vivo results.

New Method: Detailed ex-vivo and in-vivo closed-loop neuromodulation experiments were conducted on pig ulnar nerves.

View Article and Find Full Text PDF

Aim: The purpose of the present study was to determine cancer patients' attitudes toward the anti-COVID-19 vaccine.

Background: Historically, the scientific community's responsibility was to investigate attitudes about vaccination. The course of COVID-19 in cancer patients makes them a high priority for vaccination.

View Article and Find Full Text PDF

The knowledge of the morphology and morphometry of peripheral nerves is essential for developing neural interfaces and understanding nerve regeneration in basic and applied research. Currently, the most adopted animal model is the rat, even though recent studies have suggested that the neuroanatomy of large animal models is more comparable to humans. The present knowledge of the morphological structure of large animal models is limited; therefore, the present study aims to describe the morphological characteristics of the Ulnar Nerve (UN) in pigs.

View Article and Find Full Text PDF

The aim of this study was to determine whether HD-sEMG is sensitive to detecting changes in motor unit behavior amongst healthy adults and type 2 diabetes mellitus (T2DM) patients presenting diabetic peripheral neuropathy (DPN) at different levels. Healthy control subjects (CON, n = 8) and T2DM patients presenting no DPN symptoms (ABS, n = 8), moderate DPN (MOD, n = 18), and severe DPN (SEV, n = 12) performed isometric ankle dorsiflexion at 30 % maximum voluntary contraction while high-density surface EMG (HD-sEMG) was recorded from the tibialis anterior muscle. HD-sEMG signals were decomposed, providing estimates of discharge rate, motor unit conduction velocity (MUCV), and motor unit territory area (MUTA).

View Article and Find Full Text PDF

Closed-loop neural interfaces capable of both stimulating and recording from peripheral nerves have the potential to enhance the long-term efficacy of neural implants. One challenge associated with closed loop interfaces is the accurate estimation of the distribution of active fibre conduction velocities (DCV) when recording the immediate effect of stimulation. DCV estimation has been performed in monopolar surface recordings using the Two-CAP method.

View Article and Find Full Text PDF

Temporal interference stimulation has been suggested as a method to reach deep targets during transcutaneous electrical stimulation. Despite its growing use in transcutaneous stimulation therapies, the mechanism of its operation is not fully understood. Recent efforts to fill that gap have focused on computational modelling, in vitro and in vivo experiments relying on physical observations - e.

View Article and Find Full Text PDF

Extracting information from the peripheral nervous system with implantable devices remains a significant challenge that limits the advancement of closed-loop neural prostheses. Linear electrode arrays can record neural signals with both temporal and spatial selectivity, and velocity selective recording using the delay-and-add algorithm can enable classification based on fibre type. The maximum likelihood estimation method also measures velocity and is frequently used in electromyography but has never been applied to electroneurography.

View Article and Find Full Text PDF

Background: The purpose of this study was to explore perceived changes in physical activity (PA) due to Covid19 stay-at-home and social distancing guidance among older adults.

Methods: Participants (n = 1429, 77% female, 84% ≥60 years) living in Scotland completed an online survey in Summer 2020 measuring PA and wellbeing (indexed through loneliness, and health-related quality of life). The survey included open- and closed-ended questions about how these variables changed in response to Covid19 social distancing and 'shielding' guidelines.

View Article and Find Full Text PDF

Objective: Because of Covid 19, it has become necessary to revise the treatment of cancer patients ("how" and "when"). That has had important psychological repercussions. The purpose of this study is the evaluation of the impact of Covid19 in terms of Post-Traumatic Stress Disorder and Depression and the potential association with coping strategies.

View Article and Find Full Text PDF

Objectives: This study investigated the possible correlation between emotional distress linked to dignity and dysfunctional temporal orientations in the oncological context.

Methods: We conducted an exploratory study between December 2020 and February 2021, referring to a sample of 107 patients in active treatment for solid tumors belonging to the Oncology Department of the Fondazione Poliambulanza (Brescia, Italy). We administered two self-report questionnaires: the Patient Dignity Inventory (PDI-IT) (Italian version, Grassi L, Costantini A, Caruso R, et al.

View Article and Find Full Text PDF

Background: COVID-19 has overwhelmed health services across the world; its global death toll has exceeded 5.3 million and continues to grow. There have been almost 15 million cases of COVID-19 in the UK.

View Article and Find Full Text PDF

Decoding information from the peripheral nervous system via implantable neural interfaces remains a significant challenge, considerably limiting the advancement of neuromodulation and neuroprosthetic devices. The velocity selective recording (VSR) technique has been proposed to improve the classification of neural traffic by combining temporal and spatial information through a multi-electrode cuff (MEC). Therefore, this study investigates the feasibility of using the VSR technique to characterise fibre type based on the electrically evoked compound action potentials (eCAP) propagating along the ulnar nerve of pigs in vivo.

View Article and Find Full Text PDF

Diabetic peripheral neuropathy (DPN) is associated with loss of motor units (MUs), which can cause changes in the activation pattern of muscle fibres. This study investigated the pattern of muscle activation using high-density surface electromyography (HD-sEMG) signals from subjects with type 2 diabetes mellitus (T2DM) and DPN. Thirty-five adults participated in the study: 12 healthy subjects (HV), 12 patients with T2DM without DPN (No-DPN) and 11 patients with T2DM with DPN (DPN).

View Article and Find Full Text PDF

This study implements the use of Danish Landrace pigs as subjects for the long-term potentiation (LTP)-like pain model. This is accomplished by analyzing changes in the primary somatosensory cortex (S1) in response to electrical stimulation on the ulnar nerve after applying high-frequency electrical stimulation (HFS) on the ulnar nerve. In this study, eight Danish Landrace pigs were electrically stimulated, through the ulnar nerve, to record the cortically evoked response in S1 by a 16-channel microelectrode array (MEA).

View Article and Find Full Text PDF

This study examined the impact of social distancing during the COVID-19 pandemic on loneliness, wellbeing, and social activity, including social support, in Scottish older adults. A mixed methods online survey was used to examine these factors during social distancing mid-lockdown, July 2020. Participants were asked to state whether loneliness, wellbeing, social activity, and social support had changed since pre-social distancing, and to provide details of strategies used to keep socially active.

View Article and Find Full Text PDF

Background: The lifestyle behaviours, and the physical and mental health of nurses, are poorer than those of other allied health professionals, and of the general population. However, these were no less favourable among first year undergraduate nursing students at a Scottish Higher Education Institution (HEI) than among similar people of the same age. We compared health and health behaviours among the same cohort of undergraduate nursing students over the course of their degree.

View Article and Find Full Text PDF

Background: The diagnosis of lower urinary tract symptoms related to suspected bladder outflow obstruction from benign prostate hyperplasia/enlargement in men is increasing. This is leading to high demand on healthcare services; however, there is limited knowledge of differences in pharmacotherapy prescribing for this condition based on geography.

Objective: To investigate potential variation in drug prescribing for suspected bladder outflow obstruction in Scotland, based on analysis of publicly available data, to identify trends and inform future prescribing.

View Article and Find Full Text PDF

Background: Urinary incontinence affects one in three women worldwide. Pelvic floor muscle training is an effective treatment. Electromyography biofeedback (providing visual or auditory feedback of internal muscle movement) is an adjunct that may improve outcomes.

View Article and Find Full Text PDF

Background: Chemotherapy-induced peripheral neuropathy (CIPN) is an adverse event of taxanes, with no effective prevention or treatment available and a highly negative impact on patient quality of life. The aim of this study is to asses that the constant application of cooled cuffs on the hands and feet prevent and mitigate CIPN.

Methods: Patients with breast, gynecologic, and pancreatic cancer who received weekly paclitaxel (PTX), PTX/carboplatin, and nab-paclitaxel (nab-PTX)/gemcitabine for any indication at the therapeutic scheduled dosage were included in this prospective study.

View Article and Find Full Text PDF

Background: Numbers of people with an intellectual disability and dementia present a global health and social challenge with associated need to reduce stress or agitation and improve quality of life in affected individuals. This study aimed to identify effectiveness of psychosocial interventions in social care settings and, uniquely, explore use of photovoice methodology to develop dialogue about dementia.

Methods: This mixed-method participatory action study used individualised goal-setting theory with 16 participants with intellectual disability and dementia, and 22 social care staff across 11 sites.

View Article and Find Full Text PDF