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Sickle Cell Disease Subjects Have a Distinct Abnormal Autonomic Phenotype Characterized by Peripheral Vasoconstriction With Blunted Cardiac Response to Head-Up Tilt
Conclusion We have shown that SCD subjects are much more likely than non-SCD subjects to have impaired cardiac, but intact peripheral responses to orthostatic stress induced by HUT. These abnormal responses are associated with low baseline cardiac parasympathetic activity, independent of hemoglobin level. The classification of autonomic phenotypes based on HUT response may have potential use for predicting disease severity, guiding and targeting treatments/interventions to alleviate the risk of adverse outcomes in SCD. Ethics Statement All experiments were conducted at Children’s Hospital Los Angeles (CHLA). The ...
Source: Frontiers in Physiology - April 10, 2019 Category: Physiology Source Type: research

Urine Arsenic and Arsenic Metabolites in U.S. Adults and Biomarkers of Inflammation, Oxidative Stress, and Endothelial Dysfunction: A Cross-Sectional Study
Conclusion: In a cross-sectional study of U.S. adults, we observed some positive associations of uAs and toenail As concentrations with biomarkers potentially relevant to CVD pathogenesis and inflammation, and evidence of a higher capacity to metabolize inorganic As was negatively associated with a marker of oxidative stress. https://doi.org/10.1289/EHP2062 Received: 14 April 2017 Revised: 13 November 2017 Accepted: 15 November 2017 Published: 15 December 2017 Address correspondence to S.F. Farzan, 2001 N. Soto St., Los Angeles, CA, 90032. Telephone: (323)-442-5101; Email: sffarzan@usc.edu Supplemental Material is ava...
Source: EHP Research - December 16, 2017 Category: Environmental Health Authors: Daniil Lyalko Tags: Research Source Type: research

Associations between Ambient Fine Particulate Oxidative Potential and Cardiorespiratory Emergency Department Visits
Conclusions: Lag 0–2 OPDTT was associated with ED visits for multiple cardiorespiratory outcomes, providing support for the utility of OPDTT as a measure of fine particle toxicity. https://doi.org/10.1289/EHP1545 Received: 23 December 2016 Revised: 4 August 2017 Accepted: 12 August 2017 Published: 26 October 2017 Please address correspondence to J.Y. Abrams, Centers for Disease Control and Prevention, NCEZID/DHCPP, 1600 Clifton Rd. NE, CDC Mailstop A30, Atlanta, GA 30333 USA. Telephone: (404) 639-5121. Email: jabrams@cdc.gov Supplemental Material is available online (https://doi.org/10.1289/EHP1545). The authors ...
Source: EHP Research - October 26, 2017 Category: Environmental Health Authors: Daniil Lyalko Tags: Research Source Type: research

Nanomaterials Versus Ambient Ultrafine Particles: An Opportunity to Exchange Toxicology Knowledge
Conclusion: There is now an opportunity to apply knowledge from NM toxicology and use it to better inform PM health risk research and vice versa. https://doi.org/10.1289/EHP424 Received: 17 December 2015 Revised: 12 August 2016 Accepted: 30 August 2016 Published: 10 October 2017 Address correspondence to V. Stone, School of Life Sciences, Heriot-Watt University, Edinburgh, UK. Telephone: +44 131 451 3460. Email: v.stone@hw.ac.uk V.S. currently receives grant funding from Byk Altana and from The European Ceramic Fibre Industry Association (ECFIA). In the past, V.S. has received funding from Unilever and GlaxoSmithKline....
Source: EHP Research - October 10, 2017 Category: Environmental Health Authors: Daniil Lyalko Tags: Review Source Type: research