Publications by authors named "Vishal Sahni"

Background: Carpal tunnel syndrome (CTS) is one of the most common peripheral nerve compressive neuropathies. The clinical symptoms and physical examinations of CTS are widely recognised, however, there is still debate around what is the best approach for assessment of CTS. Clinical assessment is still considered the gold standard, however, controversies do exist regarding the need for investigations such nerve conduction studies (NCS) to aid with management decisions.

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  • Ultrasound can non-invasively disrupt tissue and enhance drug delivery when combined with contrast microbubbles, making it potentially valuable for liquid biopsies.
  • Research demonstrated that cavitating microbubbles can release specific miRNAs from human renal cells without damaging the cells, allowing for better biomarker detection.
  • Techniques such as electron microscopy showed changes in cell structure but indicated that cells remained viable even after the release of miRNAs.
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Deficits in adult neurogenesis may contribute to the aetiology of many neurodevelopmental, psychiatric and neurodegenerative diseases. Genetic ablation of neurogenesis provides proof of concept that adult neurogenesis is required to sustain complex and dynamic cognitive functions, such as learning and memory, mostly by providing a high degree of plasticity to neuronal circuits. In addition, adult neurogenesis is reactive to external stimuli and the environment making it particularly susceptible to impairment and consequently contributing to comorbidity.

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  • This study focuses on the role of small noncoding RNAs, specifically miRNAs, in kidney disease, exploring their potential as biomarkers for diagnosing and monitoring disease progression and treatment efficacy.* -
  • Researchers utilized a cell-specific small RNA sequencing approach to analyze various cell types in injured and repairing kidneys, leading to the creation of a comprehensive miRNA catalog that maps changes during kidney injury and recovery.* -
  • The team identified specific miRNAs, particularly miR-16-5p and miR-18a-5p, that are enriched in macrophages and found these miRNAs to be promising urinary biomarkers for acute kidney injury in transplant patients.*
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Ultrasound guided sampling of human lymph node (LN) combined with advanced flow cytometry allows phenotypic analysis of multiple immune cell subsets. These may provide insights into immune processes and responses to immunotherapies not apparent from analysis of the blood. Ultrasound guided inguinal LN samples were obtained by both fine needle aspiration (FNA) and core needle biopsy in 10 adults within 8 weeks of diagnosis of type 1 diabetes (T1D) and 12 age-matched healthy controls at two study centers.

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The cystine-glutamate antiporter (system xc-) is a Na+-independent amino acid transporter that exchanges extracellular cystine for intracellular glutamate. It is thought to play a critical role in cellular redox processes through regulation of intracellular glutathione synthesis via cystine uptake. In gliomas, system xc- expression is universally up-regulated while that of glutamate transporters down-regulated, leading to a progressive accumulation of extracellular glutamate and excitotoxic cell death of the surrounding non-tumorous tissue.

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The purpose of this study was to assess whether subsidence occurs in collarless Corail hip replacement (CCHR) and to ascertain the extent and timing of subsidence if present. Retrospective case notes analysis was performed. Sixty eight patients who had CCHR were identified from our database.

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Blood pressure recording is a part of the routine set of initial observations for any patient. It is performed by variety of medical and paramedical personnel universally. Bone metastases and pathologic fracture of the bone are common in the elderly patient.

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We show that desert hedgehog (dhh), a signaling molecule expressed by Schwann cells, is essential for the structural and functional integrity of the peripheral nerve. Dhh-null nerves display multiple abnormalities that affect myelinating and nonmyelinating Schwann cells, axons, and vasculature and immune cells. Myelinated fibers of these mice have a significantly increased (more than two times) number of Schmidt-Lanterman incisures (SLIs), and connexin 29, a molecular component of SLIs, is strongly upregulated.

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The variety of sometimes contradictory results of studies of the impact of secondary cognitive tasks on postural balance may be attributed to the heterogeneity of balance challenges and tasks deployed and frequent lack of quantitative comparability of tasks. We deployed a wide range of quantitatively graded difficulties of both balance challenge and cognitive tasking to obtain an overview of the spectrum of their interactions in a multi-tasking situation. A differential comparison of the effects of verbally versus spatially loaded tasks, balanced for difficulty, was made and unlike any other study, we contrived to incorporate falls as an experimental variable.

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