Publications by authors named "Tracey Crowther"

Purpose: An early-stage, multi-centre, prospective, randomised control trial with five-year follow-up was approved by Health Research Authority to compare the efficacy of a minimally invasive, laterally implanted interspinous fixation device (IFD) to open direct surgical decompression in treating lumbar spinal stenosis (LSS). Two-year results are presented.

Patients And Methods: Forty-eight participants were randomly assigned to IFD or decompression.

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Background: Commercial cultivars of perennial ryegrass infected with selected Epichloë fungal endophytes are highly desirable in certain pastures as the resulting mutualistic association has the capacity to confer agronomic benefits (such as invertebrate pest deterrence) largely due to fungal produced secondary metabolites (e.g., alkaloids).

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Under favourable conditions, perennial ryegrass (Lolium perenne) engineered to accumulated high lipid (HL) carbon sink in their leaves was previously shown to also enhance photosynthesis and growth. The greater aboveground biomass was found to be diminished in a dense canopy compared to spaced pots. Besides, the underlying genetic regulatory network linking between leaf lipid sinks and these physiological changes remains unknown.

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The highly variable cytoplasmic N-terminus of the plant diacylglycerol acyltransferase 1 (DGAT1) has been shown to have roles in oligomerization as well as allostery; however, the biological significance of the variation within this region is not understood. Comparing the coding sequences over the variable N-termini revealed the Poaceae DGAT1s contain relatively high GC compositional gradients as well as numerous direct and inverted repeats in this region. Using a variety of reciprocal chimeric DGAT1s from angiosperms we show that related N-termini had similar effects (positive or negative) on the accumulation of the recombinant protein in .

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Objectives: Failed back surgery syndrome (FBSS) is associated with impaired autonomic tone, characterized by sympathetic prevalence and vagal withdrawal. Although spinal cord stimulation (SCS) alleviates pain in FBSS, there is limited research investigating how SCS affects measures of autonomic function. This was a prospective, open-label, feasibility study exploring measures of autonomic function in patients with FBSS receiving SCS therapy.

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Article Synopsis
  • Spinal cord stimulation (SCS) is a promising treatment for chronic low back pain (CLBP), and this study compares two methods of lead placement: traditional paresthesia mapping and newer anatomic placement.* -
  • In a trial involving 43 subjects, participants were implanted with two leads and assessed for pain relief and quality of life over twelve months, with no significant difference in outcomes between the two lead placement methods.* -
  • The findings suggest that both lead placement techniques can provide similar pain relief and benefits, indicating flexibility in choosing the approach for SCS therapy for CLBP.*
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Objectives: The influence of gender on outcomes in individuals undergoing treatment for chronic pain is unclear. This retrospective, single-site study explored the impact of gender on pain, quality of life (QoL), revisions, and explants in patients with failed back surgery syndrome or visceral pain, who received a fully implanted 10 kHz spinal cord stimulation (SCS), burst SCS, or dorsal root ganglion (DRG) stimulation system.

Materials And Methods: The following data were collected from paper and electronic records: gender, age, chronic pain diagnosis, system, baseline and follow-up scores (average pain [visual analog scale, VAS], worst pain [VAS], QoL [EQ-5D-3L]), revisions, and explants.

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Background: Chronic pain in head, neck, shoulders and upper limbs is debilitating, and patients usually rely on pain medications or surgery to manage their symptoms. However, given the current opioid epidemic, non-pharmacological interventions that reduce pain, such as spinal cord stimulation (SCS), are needed. The purpose of this study was to review the evidence on paresthesia-free 10 kHz SCS therapy for neck and upper extremity pain.

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Diacylglycerol acyl-transferase (DGAT) and cysteine oleosin (CO) expression confers a novel carbon sink (of encapsulated lipid droplets) in leaves of and has been shown to increase photosynthesis and biomass. However, the physiological mechanism by which DGAT + CO increases photosynthesis remains unresolved. To evaluate the relationship between sink strength and photosynthesis, we examined fatty acids (FA), water-soluble carbohydrates (WSC), gas exchange parameters and leaf nitrogen for multiple DGAT + CO lines varying in transgene accumulation.

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10 kHz spinal cord stimulation (SCS) is increasingly utilized globally to treat chronic pain syndromes. Real-world evidence complementing randomized controlled trials supporting its use, has accumulated over the last decade. This systematic review aims to summarize the retrospective literature with reference to the efficacy and safety of 10 kHz SCS.

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Purpose: Spinal cord stimulation (SCS) is a recommended treatment for chronic neuropathic pain. Persistent nonoperative low back pain of neuropathic origin has profound negative impacts on patient's lives. This prospective, open label, research study aimed to explore the use of SCS in patients with associated features of central sensitisation such as allodynia and hyperalgesia.

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Article Synopsis
  • This study investigated the effectiveness of two different lead implantation methods for spinal cord stimulation (SCS) in patients with chronic low back pain: the paresthesia mapping approach (PM) and the anatomical placement approach (AP).
  • 53 participants tested both lead types over two weeks, with assessments made before and after the trial.
  • Results showed that 81.1% of subjects experienced significant pain relief with at least one lead, with no significant difference in effectiveness between the two placement methods.
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Article Synopsis
  • Researchers modified two genes, cys-OLE and DGAT, in perennial ryegrass to enhance the accumulation of stable lipid droplets in the leaves.
  • The high-expressing transformant (HL) demonstrated increased growth rates and enhanced carbon capture efficiency, particularly under high nitrogen and elevated CO2 conditions, compared to wild-type ryegrass (WT).
  • This research suggests that incorporating lipid droplets in non-seed plant tissues could improve plant biomass and energy management, highlighting the unique advantages of the cys-OLE/DGAT approach compared to other lipid accumulation methods.
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Objectives: This study evaluated efficacy and safety of bolus doses of ziconotide (Prialt®, Eisai Limited, Hertfordshire, UK) to assess the option of continuous administration of this drug via an implanted intrathecal drug delivery system.

Materials And Methods: Twenty adults with severe chronic pain who were under consideration for intrathecal (IT) therapy were enrolled in this open label, nonrandomized, pilot study. Informed consent was obtained.

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