60 research outputs found

    The Health Care Industry is Ready for a Revolution: Its Privacy Laws are Not

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    This paper highlights the costs and benefits associated with the gathering, storing, analyzing, and digitizing of health information; examines current privacy laws and their inadequacies in the new and constantly changing digital health world; and then provides a proposal framework to balance encouraging innovation while protecting individual autonomy. The article specifically proceeds as follows. This paper first discusses of the evolution of the health industry, from paper records to the wide array of sources generating health information today. Next, it considers the benefits to the ever-increasing amount of health information, which, while considerable can often be in tension with privacy and autonomy interests. It then examines the current privacy models applicable to the various sources of health information, and highlight the types of information left unprotected, as well as the ways in which individuals lack control over their health information. Finally, this paper introduces a framework that is flexible enough to adapt to different societal interests but maintains the integrity of the health system by ensuring that the individual’s interests remain the priority. Such a framework will allow individuals to be in control of their health information in a way that protects their individual interests and allows them to contribute to societal growth

    MICROELECTRODE ARRAY RECORDINGS OF L-GLUTAMATE DYNAMICS IN THE BRAINS OF FREELY MOVING RATS

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    L-glutamate (Glu) is the predominant excitatory neurotransmitter inthe mammalian central nervous system (CNS) and is associated with a widevariety of functions including motor behavior and sensory perception. Whilemicrodialysis methods have been used to record tonic levels of Glu, little isknown about the more rapid changes in Glu signals that may occur in awakeanimals. We have previously reported acute recording methods using anenzyme-based microelectrode array (MEA) with fast temporal resolution (800msec), that is minimally invasive and is capable of detecting low levels of Glu (andlt;0.2 ??M) in anesthetized animals with little interference from other analytes. Wehave made a series of modifications to the MEA design to allow for reliablemeasures in the brain of awake behaving rats. In these studies, wecharacterized the effects of chronic implantation of the MEA into the striatum andprefrontal cortex (PFC) of Fischer 344 and Long Evans rats. We measuredresting levels of Glu and local application of Glu for 7 days without a significantloss of sensitivity and determined that Glu measures due to exogenous Gluvaried between rat strain and brain region. In addition, we determined theviability of the recordings in the brains of awake animals. We performed studiesof tail-pinch induced stress which caused an increase in Glu in the striatum andPFC of Long Evans and Fischer 344 rats. Histological data show that chronicimplantation of our MEAs caused minimal injury to the CNS. Taken together, ourdata support that chronic recordings of tonic and phasic Glu can be carried out inawake rats reliably for 7 days in vivo allowing for longer term studies of Gluregulation in behaving rats

    Wastewater-based surveillance identifies start to the pediatric respiratory syncytial virus season in two cities in Ontario, Canada

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    IntroductionDetection of community respiratory syncytial virus (RSV) infections informs the timing of immunoprophylaxis programs and hospital preparedness for surging pediatric volumes. In many jurisdictions, this relies upon RSV clinical test positivity and hospitalization (RSVH) trends, which are lagging indicators. Wastewater-based surveillance (WBS) may be a novel strategy to accurately identify the start of the RSV season and guide immunoprophylaxis administration and hospital preparedness.MethodsWe compared citywide wastewater samples and pediatric RSVH in Ottawa and Hamilton between August 1, 2022, and March 5, 2023. 24-h composite wastewater samples were collected daily and 5 days a week at the wastewater treatment facilities in Ottawa and Hamilton, Ontario, Canada, respectively. RSV WBS samples were analyzed in real-time for RSV by RT-qPCR.ResultsRSV WBS measurements in both Ottawa and Hamilton showed a lead time of 12 days when comparing the WBS data set to pediatric RSVH data set (Spearman’s ρ = 0.90). WBS identify early RSV community transmission and declared the start of the RSV season 36 and 12 days in advance of the provincial RSV season start (October 31) for the city of Ottawa and Hamilton, respectively. The differing RSV start dates in the two cities is likely associated with geographical and regional variation in the incidence of RSV between the cities.DiscussionQuantifying RSV in municipal wastewater forecasted a 12-day lead time of the pediatric RSVH surge and an earlier season start date compared to the provincial start date. These findings suggest an important role for RSV WBS to inform regional health system preparedness, reduce RSV burden, and understand variations in community-related illness as novel RSV vaccines and monoclonal antibodies become available

    SARS-CoV-2-specific immune responses and clinical outcomes after COVID-19 vaccination in patients with immune-suppressive disease

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    Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) immune responses and infection outcomes were evaluated in 2,686 patients with varying immune-suppressive disease states after administration of two Coronavirus Disease 2019 (COVID-19) vaccines. Overall, 255 of 2,204 (12%) patients failed to develop anti-spike antibodies, with an additional 600 of 2,204 (27%) patients generating low levels (<380 AU ml−1). Vaccine failure rates were highest in ANCA-associated vasculitis on rituximab (21/29, 72%), hemodialysis on immunosuppressive therapy (6/30, 20%) and solid organ transplant recipients (20/81, 25% and 141/458, 31%). SARS-CoV-2-specific T cell responses were detected in 513 of 580 (88%) patients, with lower T cell magnitude or proportion in hemodialysis, allogeneic hematopoietic stem cell transplantation and liver transplant recipients (versus healthy controls). Humoral responses against Omicron (BA.1) were reduced, although cross-reactive T cell responses were sustained in all participants for whom these data were available. BNT162b2 was associated with higher antibody but lower cellular responses compared to ChAdOx1 nCoV-19 vaccination. We report 474 SARS-CoV-2 infection episodes, including 48 individuals with hospitalization or death from COVID-19. Decreased magnitude of both the serological and the T cell response was associated with severe COVID-19. Overall, we identified clinical phenotypes that may benefit from targeted COVID-19 therapeutic strategies

    Factors Associated with Revision Surgery after Internal Fixation of Hip Fractures

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    Background: Femoral neck fractures are associated with high rates of revision surgery after management with internal fixation. Using data from the Fixation using Alternative Implants for the Treatment of Hip fractures (FAITH) trial evaluating methods of internal fixation in patients with femoral neck fractures, we investigated associations between baseline and surgical factors and the need for revision surgery to promote healing, relieve pain, treat infection or improve function over 24 months postsurgery. Additionally, we investigated factors associated with (1) hardware removal and (2) implant exchange from cancellous screws (CS) or sliding hip screw (SHS) to total hip arthroplasty, hemiarthroplasty, or another internal fixation device. Methods: We identified 15 potential factors a priori that may be associated with revision surgery, 7 with hardware removal, and 14 with implant exchange. We used multivariable Cox proportional hazards analyses in our investigation. Results: Factors associated with increased risk of revision surgery included: female sex, [hazard ratio (HR) 1.79, 95% confidence interval (CI) 1.25-2.50; P = 0.001], higher body mass index (fo

    MICROELECTRODE ARRAY RECORDINGS OF L-GLUTAMATE DYNAMICS IN THE BRAINS OF FREELY MOVING RATS

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    L-glutamate (Glu) is the predominant excitatory neurotransmitter in the mammalian central nervous system (CNS) and is associated with a wide variety of functions including motor behavior and sensory perception. While microdialysis methods have been used to record tonic levels of Glu, little is known about the more rapid changes in Glu signals that may occur in awake animals. We have previously reported acute recording methods using an enzyme-based microelectrode array (MEA) with fast temporal resolution (800 msec), that is minimally invasive and is capable of detecting low levels of Glu (< 0.2 ”M) in anesthetized animals with little interference from other analytes. We have made a series of modifications to the MEA design to allow for reliable measures in the brain of awake behaving rats. In these studies, we characterized the effects of chronic implantation of the MEA into the striatum and prefrontal cortex (PFC) of Fischer 344 and Long Evans rats. We measured resting levels of Glu and local application of Glu for 7 days without a significant loss of sensitivity and determined that Glu measures due to exogenous Gl
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