Publications by authors named "BUCHANAN W"

Article Synopsis
  • * A study was conducted on rats to see how Cr accumulates in various brain regions after a 90-day exposure to drinking water with Cr(VI) at regulated levels, focusing on age and sex differences.
  • * Findings revealed that Cr accumulated primarily in the hippocampus of older female rats, highlighting significant changes in essential metals in the brain, indicating a targeted effect of Cr(VI) on brain tissue and possible health implications.
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We are facing a rapidly growing geriatric population (65+) that will live for multiple decades and are challenged with environmental pollution far exceeding that of previous generations. Consequently, we currently have a poor understanding of how environmental pollution will impact geriatric health distinctly from younger populations. Few toxicology studies have considered age differences with geriatric individuals.

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Introduction: A surge of human influenza A(H7N9) cases began in 2016 in China from an antigenically distinct lineage. Data are needed about the safety and immunogenicity of 2013 and 2017 A(H7N9) inactivated influenza vaccines (IIVs) and the effects of AS03 adjuvant, prime-boost interval, and priming effects of 2013 and 2017 A(H7N9) IIVs.

Methods: Healthy adults (n = 180), ages 19-50 years, were enrolled into this partially blinded, randomized, multicenter phase 2 clinical trial.

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Long-standing unexplained Venus atmosphere observations and chemical anomalies point to unknown chemistry but also leave room for the possibility of life. The unexplained observations include several gases out of thermodynamic equilibrium ( tens of ppm O, the possible presence of PH and NH, SO and HO vertical abundance profiles), an unknown composition of large, lower cloud particles, and the "unknown absorber(s)." Here we first review relevant properties of the venusian atmosphere and then describe the atmospheric chemical anomalies and how they motivate future astrobiology missions to Venus.

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Impairment of the skin's structural integrity initially results in acute wounds which can become chronic if timely wound closure is not achieved. Chronic wounds (CWs) affect more than 1% of the global population with increasing cases of this condition due to the ageing population. Current wound management relies on debridement, hyperbaric oxygen, antibiotics, and wound dressings, which lack early intervention and specificity.

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For the first time, we enable the execution of hybrid quantum machine learning (HQML) methods on real quantum computers with 100 data samples and real-device-based simulations with 5000 data samples, thereby outperforming the current state of research of Suryotrisongko and Musashi from 2022 who were dealing with 1000 data samples and quantum simulators (pure software-based emulators) only. Additionally, we beat their reported accuracy of 76.8% by an average accuracy of 91.

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Background: A controlled human infection model for assessing tuberculosis (TB) immunity can accelerate new vaccine development.

Methods: In this phase 1 dose escalation trial, 92 healthy adults received a single intradermal injection of 2 × 106 to 16 × 106 colony-forming units of Bacillus Calmette-Guérin (BCG). The primary endpoints were safety and BCG shedding as measured by quantitative polymerase chain reaction, colony-forming unit plating, and MGIT BACTEC culture.

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Article Synopsis
  • Reactive arthritis, previously called Reiter's Syndrome, is characterized by asymmetrical acute joint pain, fever, and various symptoms like conjunctivitis and rash.
  • Although named after Hans Reiter, the condition had been documented earlier by French doctors who studied soldiers with similar symptoms during World War I.
  • Due to Reiter's controversial past, including his allegiance to the Nazi regime, the term has been changed to reactive arthritis for ethical and clinical reasons.
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  • Sir William Osler highlighted painful nodes in subacute bacterial endocarditis in 1909, earning them the name "Osler's nodes" and publishing his findings in the Quarterly Journal of Medicine.
  • Dr. John Alexander Mullin is credited with initially pointing out these nodes to Osler.
  • There is confusion between Osler's nodes and non-tender skin lesions (Janeway lesions) found in acute bacterial endocarditis, but research shows that their underlying causes and tissue characteristics are essentially the same.
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  • - The spondyloarthropathies are a group of conditions primarily affecting spinal joints, often linked to genetic factors like the HLA-B27 antigen, and include Ankylosing spondylitis, reactive arthritis, and arthritis related to Crohn's and colitis.
  • - Ankylosing spondylitis predominantly affects males and is characterized by seronegativity for rheumatoid factor and potential extra-articular symptoms like iridocyclitis.
  • - Reactive arthritis typically follows infections of the gastrointestinal or genitourinary tract, while Crohn's and colitis-related arthritis often involves asymmetrical large joint pain; additionally, conditions like acute rheumatic fever and Lyme disease can lead to post-infection arthritis. *
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William Soutar (1898-1943) was a Scottish poet, but many are unaware of his scholarly work which includes his famous "brain-rhymes". He was born in Perth Scotland in 1898. He was educated at Perth Primary School and Perth Academy and proved to be adept at sport and academics.

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This review is based investigations on the Western Isles, Scotland, by Martin Martin, a notable Scottish Highlander, academic and medical doctor, of the 17th-18th century. His extensive observations of the geography and peoples of these Isles were recorded in his books, "On the Description of the Western Islands of Scotland Circa 1695" and "A Late Voyage to St Kilda". In these books and subsequent papers there were some noteworthy observations on the occurrence (and as he says non-occurrence) of "epidemical" diseases and conditions afflicting the peoples of The Isle of Skye and the Western Isles of Scotland in this period, and these are discussed in this review.

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Non-medicinal therapies with water, salts, exercise, massage, supportive devices, and electricity have been used for centuries and continue to be of benefit for some people with musculoskeletal disorders. Historical texts refer to the two electuaries mithridatium and theriaca as early therapeutic attempts of man to provide relief of musculoskeletal symptoms and attempt disease cures. For over 200 years, morphine-derived products have been used for musculoskeletal pain.

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  • The term "clinical trial" refers to the investigation of a medical treatment to evaluate its benefits and potential toxic effects.
  • The history of clinical trials dates back to at least 600 BC, with notable examples like Lind's scurvy treatment using citrus fruits in 1747 and Jenner's controversial smallpox inoculation in 1796.
  • Modern clinical trials prioritize human ethics, strict observations, statistical analysis, and safety testing to ensure the integrity and effectiveness of therapeutic interventions.
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There is documentation of the use of opium derived products in the ancient history of the Assyrians: the Egyptians; in the sixth century AD by the Roman Dioscorides; and by Avicenna (980-1037). Reference to opium like products is made by Paracelsus and by Shakespeare. Charles Louis Derosne and Fredrich Wilhelm Adam Serturner isolated morphine from raw opium in 1802 and 1806 respectively, and it was Sertürner who named the substance morphine, after Morpheus, the Greek God of dreams.

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Ransomware is a malicious class of software that utilises encryption to implement an attack on system availability. The target's data remains encrypted and is held captive by the attacker until a ransom demand is met. A common approach used by many crypto-ransomware detection techniques is to monitor file system activity and attempt to identify encrypted files being written to disk, often using a file's entropy as an indicator of encryption.

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Historically, threat information sharing has relied on manual modelling and centralised network systems, which can be inefficient, insecure, and prone to errors. Alternatively, private blockchains are now widely used to address these issues and improve overall organisational security. An organisation's vulnerabilities to attacks might change over time.

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Chronic wounds and their treatment present a significant burden to patients and healthcare systems alike, with their management further complicated by bacterial infection. Historically, antibiotics have been deployed to prevent and treat infections, but the emergence of bacterial antimicrobial resistance and the frequent development of biofilms within the wound area necessitates the identification of novel treatment strategies for use within infected chronic wounds. Here, several non-antibiotic compounds, polyhexamethylene biguanide (PHMB), curcumin, retinol, polysorbate 40, ethanol, and D-α-tocopheryl polyethylene glycol succinate 1000 (TPGS) were screened for their antibacterial and antibiofilm capabilities.

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  • Osteoarthritis has been identified in dinosaur skeletons from 50-70 million years ago, Egyptian mummies, and ancient English skeletons, indicating its long history in various species.
  • The condition affects joints like the hands, spine, hips, knees, and feet, and can be classified as primary osteoarthritis when no prior injury exists, or secondary if linked to prior trauma or other factors.
  • Osteoarthritis prevalence increases with age, and while there's evidence of inflammation involved, the exact cause, especially for primary osteoarthritis, remains unclear.
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Crude forms of musculoskeletal surgery have been performed through history for the treatment of deformity, pain and the horrors of battle. In more modern times Muller is credited with the first synovectomy in rheumatoid arthritis in 1884, and a Synovectomy was first performed by Richard von Volkmann (1830-1889) for joint tuberculosis. Chemical synovectomy consisting of the intra-articular injection of various agents was popular for a while but is now largely discarded.

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It is difficult to determine from ancient writings, old human specimens, and from Art over the centuries, as to when Rheumatoid Arthritis first appeared. It may be a relatively modern condition, as it was reasonably well described in the seventeenth century. Augustin Jacob Landre-Beauvais (1772-1840), University of Paris is credited, with the first clear description of the disease in his thesis.

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The rapid rise in the health burden associated with chronic wounds is of great concern to policymakers, academia, and industry. This could be attributed to the devastating implications of this condition, and specifically, chronic wounds which have been linked to invasive microbial infections affecting patients' quality of life. Unfortunately, antibiotics are not always helpful due to their poor penetration of bacterial biofilms and the emergence of antimicrobial resistance.

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Waning immunity after two SARS-CoV-2 mRNA vaccinations and the emergence of variants precipitated the need for a third dose of vaccine. We evaluated early safety and immunogenicity after a third mRNA vaccination in adults who received the mRNA-1273 primary series in the Phase 1 trial approximately 9 to 10 months earlier. The booster vaccine formulations included 100 mcg of mRNA-1273, 50 mcg of mRNA-1273.

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