Publications by authors named "CM Martin"

Background: We previously published the protocol and statistical analysis plan for a randomized controlled trial of Proportional Assist Ventilation for Minimizing the Duration of Mechanical Ventilation: the PROMIZING study in Trials ( https://doi.org/10.1186/s13063-023-07163-w ).

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Background: Clinical genetic evaluation of dilated cardiomyopathy (DCM) is implemented variably or not at all. Identifying needs and barriers to genetic evaluations will enable strategies to enhance precision medicine care.

Methods: An online survey was conducted in June 2024 among cardiologist investigators of the DCM Consortium from US advanced heart failure/transplant (HF/TX) programs to collect demographics, training, program characteristics, genetic evaluation practices for DCM, and implementation needs.

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Background And Aims: Patients with heart failure with preserved ejection fraction (HFpEF) tend to have low resting and exercise heart rates. Phosphodiesterase-3 (PDE-3) inhibitors improve heart rates, haemodynamics and symptoms in patients with HFpEF. Cilostazol is an oral PDE-3 inhibitor used in peripheral artery disease.

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Purpose: The optimal method for monitoring intensive care unit (ICU) performance is unknown. We sought to compare process control charts using standardized mortality ratio (SMR), p-charts, and cumulative sum (CUSUM) charts for detecting increases in risk-adjusted mortality within ICUs.

Methods: Using data from 17 medical-surgical ICUs that included 29,592 patients in Ontario, Canada, we created risk-adjusted p-charts and SMRs on monthly intervals and CUSUM charts.

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Background: Despite accumulating evidence correlating oxidative stress with lupus disease activity, the brain redox pathways are still poorly investigated. Cinnamomum cassia, a widely used spice with powerful antioxidant properties, could be a novel therapeutic candidate in lupus.

Methods: C57BL/6J female mice were divided into five groups: sham, sham-cinnamon, lupus, lupus-cinnamon starting from induction, and lupus-cinnamon starting two weeks before induction.

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Article Synopsis
  • Primary care physicians are both excited and worried about the role of AI and machine learning in health care, with the potential for AI/ML to improve diagnosis and streamline tasks, but challenges remain for complex cases.
  • While AI/ML has shown success in areas like analyzing digital images and managing administrative duties, it struggles with recommending treatments for complicated diseases, and it may worsen health equity disparities.
  • For AI/ML to be effective in primary care, its applications should be limited, based on accurate data, and integrated into existing workflows, emphasizing the need for physician involvement in development and careful testing before implementation.
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  • A study assessed the link between preexisting diabetes and mortality, as well as organ support needs, in adults hospitalized for sepsis in Ontario, Canada, from 2008 to 2019.
  • Among 503,455 participants, 36% had diabetes; results showed that having diabetes was associated with a lower risk of dying within 90 days, but an increased need for new kidney treatment.
  • Additionally, prior use of metformin in diabetic patients played a role in reducing the mortality risk, indicating a potential area for further research on these observed associations.
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Cardiomyopathies in Women.

Methodist Debakey Cardiovasc J

March 2024

Heart failure affects over 2.6 million people in the United States. While women have better overall survival rates, they also suffer from higher morbidity as shown by higher rates of hospitalization and worse quality of life.

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Prolonged exposure to low levels of dietary contaminants is a context in modern life that could alter organ physiology gradually. Here, we aimed to investigate the impact of continuous exposure to acceptable daily intake (ADI) and non-observable adverse effect level (NOAEL) of glyphosate from gestation to adulthood using C57BL/6J mice and incorporating these levels into their food pellets. From adulthood, we analyzed neurophysiological and neuro-glia cellular adaptations in male and female animals.

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  • The study aimed to evaluate the impact of an early rehabilitation program on critically ill children’s functioning, health-related quality of life (HRQL), and parental stress after they leave the Pediatric Intensive Care Unit (PICU).
  • Conducted at two hospitals in Ontario, Canada, the intervention involved a rehabilitation bundle including pain management, delirium prevention, and early mobilization for children expecting to stay in the PICU for 48 hours.
  • The results showed that after the rehabilitation bundle was implemented, there was no significant improvement in children’s recovery or decreased parental stress, with many children still experiencing functional decline and low HRQL at discharge and follow-ups.
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  • The study investigates the prevalence and contributing factors of potentially inappropriate treatment among critically ill children in a pediatric intensive care unit (PICU) as perceived by healthcare providers.
  • Out of 374 patients, 133 met the criteria for the study, with a specific focus on cases that resulted in consensus among providers about the inappropriateness of treatment.
  • Findings showed that 53% of providers experienced distress linked to the treatments they deemed potentially inappropriate, highlighting themes such as feelings of causing harm and conflict related to patient care decisions.
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  • Annexin A5 is a protein that helps reduce inflammation, prevent blood clotting, and avoid cell death, showing promise in improving organ function in sepsis models.
  • A clinical trial tested a recombinant version of annexin A5 (SY-005) for severe COVID-19, with patients receiving low (50 μg/kg) or high (100 μg/kg) doses or placebo over 7 days.
  • Results indicated that SY-005 was quickly cleared from the body without significant changes in blood coagulation or kidney function, suggesting it was safe and well-tolerated in the participants.
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  • The study aimed to implement an early rehabilitation bundle in two Canadian Pediatric Intensive Care Units (PICUs), focusing on improving patient care through specific interventions.
  • Key components of the intervention included prioritizing pain management, monitoring for delirium, and promoting early mobilization among children under 18 admitted to the PICU.
  • While the implementation improved compliance and reduced certain sedative use without compromising patient safety or comfort, it did not have a significant impact on overall clinical outcomes like delirium rates or PICU length of stay.
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Background & Aims: The constitutive androstane receptor (CAR) is a nuclear receptor that binds diverse xenobiotics and whose activation leads to the modulation of the expression of target genes involved in xenobiotic detoxification and energy metabolism. Although CAR hepatic activity is considered to be higher in women than in men, its sex-dependent response to an acute pharmacological activation has seldom been investigated.

Methods: The hepatic transcriptome, plasma markers, and hepatic metabolome, were analysed in and male and female mice treated either with the CAR-specific agonist 1,4-bis[2-(3,5-dichloropyridyloxy)]benzene (TCPOBOP) or with vehicle.

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High-grade serous ovarian cancer (HGSOC) is the most prevalent and deadliest subtype of epithelial ovarian cancer (EOC), killing over 140,000 people annually. Morbidity and mortality are compounded by a lack of screening methods, and recurrence is common. Plasminogen-activator-inhibitor 1 (PAI-1, the protein product of SERPIN E1) is involved in hemostasis, extracellular matrix (ECM) remodeling, and tumor cell migration and invasion.

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Hydrofluoroolefins are being adopted as sustainable alternatives to long-lived fluorine- and chlorine-containing gases and are finding current or potential mass-market applications as refrigerants, among a myriad of other uses. Their olefinic bond affords relatively rapid reaction with hydroxyl radicals present in the atmosphere, leading to short lifetimes and proportionally small global warming potentials. However, this type of functionality also allows reaction with ozone, and whilst these reactions are slow, we show that the products of these reactions can be extremely long-lived.

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  • A novel treatment method using resonant acoustic standing waves in limbs is proposed to safely dissolve harmful bubbles in the bloodstream by causing them to rupture.
  • The method employs semicircular piezoelectric transducers to generate these waves in a swine thigh model, allowing for the study of bubble behavior in simulated blood vessels filled with saline and sheep blood.
  • Results show that the acoustic waves can effectively rupture bubbles sized between 300μm and 900μm, achieving a 44% reduction in dissolved gas without harming red blood cell counts.
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Rhodium(II) catalyzes carbene transfer from trimethylsilyldiazomethane to arylmethyl thioethers, generating sulfonium ylides that undergo [2,3]-sigmatropic rearrangement, punching quaternary centers into aromatic rings. The reaction works well with naphthalene, indole, and benzofuran ring systems, but the reaction is unsuccessful with the monocyclic benzene homologue. For aryl thioethers, Rh(OAc) gives good results.

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  • Non-alcoholic fatty liver disease (NAFLD) is impacted by diet and shows different effects in male and female mice.
  • Male mice on a casein-based Western diet develop metabolic issues and NAFLD, while those on a free amino acid diet do not exhibit the same liver damage or metabolic changes.
  • Regardless of the amino acid source, female mice remain protected from Western diet-induced liver problems and related gut microbiota changes.
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Introduction: Women vaccinated through the initial catch-up HPV vaccination programme (2011/12 to 2013/14) first became eligible for cervical screening in 2019 at age 25. This study aims to examine the changes in detection of HG cytology outcomes in 25-year-olds screened from 2010 to 2022 compared to population data on HPV vaccination in this group.

Methods: This was an ecological-type study.

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  • The study aimed to evaluate the design and safety of administering a drug called SY-005, a recombinant human annexin A5, to critically ill COVID-19 patients in a double-blind, randomized clinical trial.
  • A total of 18 out of 55 eligible patients were enrolled, with a high percentage of doses administered on time and no serious drug-related adverse events reported.
  • Despite the small sample size due to fewer COVID-19 admissions, the results indicated that administering SY-005 was feasible and safe, suggesting that further studies are needed to explore its use in both COVID-19 and non-COVID-related sepsis.
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Introduction: Preclinical evaluation of bintrafusp alfa (BA) combined with radiotherapy revealed greater antitumor effects than BA or radiotherapy alone. In a phase 1 study, BA exhibited encouraging clinical activity in patients with stage IIIB or IV NSCLC who had received previous treatment.

Methods: This multicenter, double-blind, controlled phase 2 study (NCT03840902) evaluated the safety and efficacy of BA with concurrent chemoradiotherapy (cCRT) followed by BA (BA group) versus placebo with cCRT followed by durvalumab (durvalumab group) in patients with unresectable stage III NSCLC.

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