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Jaschen K, Royer S, LaRavia L, Kuchinski A, Lyon M. 344 Direct Patient Impact from a State-Wide Point-of-Care Ultrasound Curriculum in a Distributed Campus Medical School. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Adamkiewicz D, Maslesa A, Atri L, Berman L, Jones C, Broughton R, Lyon M. 188 Implementation of a Telemedicine Student Clinic. Ann Emerg Med 2021. [DOI: 10.1016/j.annemergmed.2021.09.199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lyon M, Coston A, Gibson R, Ling Adam B, Holsten S. 57 Making Central Lines SAFER: A Multidisciplinary Program to Improve Outcomes for Resident-Performed Central Venous Access. Ann Emerg Med 2019. [DOI: 10.1016/j.annemergmed.2019.08.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Bullard T, McNutt R, Xu N, Gibson R, Lyon M. 140 Use of GoPro to Assess Central Venous Line Placement Competency Asynchronously. Ann Emerg Med 2019. [DOI: 10.1016/j.annemergmed.2019.08.145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Gordon R, Karfunkle B, Munroe J, Lyon M. 368 Isolated Deep Venous Thrombosis Should be Detectable With Abbreviated Compression Sonography. Ann Emerg Med 2019. [DOI: 10.1016/j.annemergmed.2019.08.329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Abstract
Many vertebrates ingest stones, but the function of this behavior is not fully understood. We tested the hypothesis that lithophagy increases the duration of voluntary dives in juvenile American alligators (Alligator mississippiensis). After ingestion of granite stones equivalent to 2.5% of body weight, the average duration of dives increased by 88% and the maximum duration increased by 117%. These data are consistent with the hypothesis that gastroliths serve to increase specific gravity, and that the animals compensate by increasing lung volume, thereby diving with larger stores of pulmonary oxygen.
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Affiliation(s)
- T J Uriona
- Trinity College Dublin, Dublin 2, Ireland; Department of Biology, University of Utah, Salt Lake City, UT 84112, USA
| | - M Lyon
- Trinity College Dublin, Dublin 2, Ireland; Department of Biology, University of Utah, Salt Lake City, UT 84112, USA
| | - C G Farmer
- Trinity College Dublin, Dublin 2, Ireland; Department of Biology, University of Utah, Salt Lake City, UT 84112, USA
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Lyon M, Jaja C, James E, Xu H, Kuchinski A, Kutlar A, Gibson R. 248 Association of CYP2C9 and CYP2D6 Genotypes With Frequency of Emergency Department Visits for Sickle Cell Disease Acute Pain Vasoocclusive Crisis. Ann Emerg Med 2018. [DOI: 10.1016/j.annemergmed.2018.08.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jang K, Lyon M, White A, Gordon R. 419 Extended Length Peripheral Catheters Placed Under Ultrasound Guidance Are Associated With Increased Risk of Computed Tomography Contrast Extravasation. Ann Emerg Med 2017. [DOI: 10.1016/j.annemergmed.2017.07.298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
By photoionizing samples of laser-cooled atoms with laser light tuned just above the ionization limit, plasmas can be created with electron and ion temperatures below 10 K. These ultracold neutral plasmas have extended the temperature bounds of plasma physics by two orders of magnitude. Table-top experiments, using many of the tools from atomic physics, allow for the study of plasma phenomena in this new regime with independent control over the density and temperature of the plasma through the excitation process. Characteristic of these systems is an inhomogeneous density profile, inherited from the density distribution of the laser-cooled neutral atom sample. Most work has dealt with unconfined plasmas in vacuum, which expand outward at velocities of order 100 m/s, governed by electron pressure, and with lifetimes of order 100 μs, limited by stray electric fields. Using detection of charged particles and optical detection techniques, a wide variety of properties and phenomena have been observed, including expansion dynamics, collective excitations in both the electrons and ions, and collisional properties. Through three-body recombination collisions, the plasmas rapidly form Rydberg atoms, and clouds of cold Rydberg atoms have been observed to spontaneously avalanche ionize to form plasmas. Of particular interest is the possibility of the formation of strongly coupled plasmas, where Coulomb forces dominate thermal motion and correlations become important. The strongest impediment to strong coupling is disorder-induced heating, a process in which Coulomb energy from an initially disordered sample is converted into thermal energy. This restricts electrons to a weakly coupled regime and leaves the ions barely within the strongly coupled regime. This review will give an overview of the field of ultracold neutral plasmas, from its inception in 1999 to current work, including efforts to increase strong coupling and effects on plasma properties due to strong coupling.
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Affiliation(s)
- M Lyon
- Joint Quantum Institute, University of Maryland, College Park and NIST, College Park, MD 20742, USA
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Garrick B, Hillis G, LaRavia L, Lyon M, Gordon R. 330 Effectiveness of Common Femoral Artery Compression in Elimination of Popliteal Blood Flow. Ann Emerg Med 2016. [DOI: 10.1016/j.annemergmed.2016.08.346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jaja C, Lyon M, Gibson R, Kuchinski AM, Bowman L, Kutlar A. 140EMF Pulmonary Hypertension as a Sickle Cell Disease Emergency: Is There a Role for Preemptive Pharmacogenetic Testing? Ann Emerg Med 2016. [DOI: 10.1016/j.annemergmed.2016.08.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lyon M, JaJa C, James E, Evans A, Xu H, Sharafili S, Kuchinski A, Gibson R. 3EMF Individualizing Patient Treatment for Sickle Cell Disease through Pharmacogenetics. Ann Emerg Med 2016. [DOI: 10.1016/j.annemergmed.2016.08.409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gordon R, Lyon M, Bolgia L. 118 The Utility of Diagnostic Ultrasound for the Identification of Individuals “At Risk” for the Development of Patellofemoral Joint Osteoarthritis. Ann Emerg Med 2016. [DOI: 10.1016/j.annemergmed.2016.08.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Loeffler P, Kuchinski A, Zevallos E, Gordon R, Lyon M. 65 Ultrasound-Guided Vascular Access Education: Effectiveness of Live Versus Recorded Instruction. Ann Emerg Med 2016. [DOI: 10.1016/j.annemergmed.2016.08.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lyon M, Bergeson SD, Diaw A, Murillo MS. Using higher ionization states to increase Coulomb coupling in an ultracold neutral plasma. Phys Rev E Stat Nonlin Soft Matter Phys 2015; 91:033101. [PMID: 25871218 DOI: 10.1103/physreve.91.033101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Indexed: 06/04/2023]
Abstract
We report measurements and simulations of the time-evolving rms velocity distribution in an ultracold neutral plasma. A strongly coupled ultracold neutral Ca+ plasma is generated by photoionizing laser-cooled atoms close to threshold. A fraction of these ions is then promoted to the second ionization state to form a mixed Ca+-Ca2+ plasma. By varying the time delay between the first and the second ionization events, a minimum in ion heating is achieved. We show that the Coulomb strong-coupling parameter Γ increases by a factor of 1.4 to a maximum value of 3.6. A pure Ca2+ plasma would have Γ=6.8, moving these strongly coupled systems closer to the regime of liquid-like correlations.
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Affiliation(s)
- M Lyon
- Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA
| | - S D Bergeson
- Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA
| | - A Diaw
- New Mexico Consortium, Los Alamos, New Mexico 87544, USA
| | - M S Murillo
- New Mexico Consortium, Los Alamos, New Mexico 87544, USA
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Gordon R, Lyon M. 265 Efficacy of the Abdominal Aortic Tourniquet Device for the Control of Axillary and Femoral Artery Blood Flow. Ann Emerg Med 2014. [DOI: 10.1016/j.annemergmed.2014.07.292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lyon M, Sturgis L, Kutlar A, Gibson M, Lottenberg R, Gibson R. 181 Admission Rates for an Observation Unit Clinical Pathway for the Treatment of Uncomplicated Sickle Cell Disease Vasoocclusive Crisis. Ann Emerg Med 2014. [DOI: 10.1016/j.annemergmed.2014.07.207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lyon M, Bergeson SD. Precision spectroscopy using a partially stabilized frequency comb. Appl Opt 2014; 53:5163-5168. [PMID: 25320925 DOI: 10.1364/ao.53.005163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 07/08/2014] [Indexed: 06/04/2023]
Abstract
We present a simple method for precision spectroscopy using an optical frequency comb. One mode of a 1 GHz repetition rate mode-locked Ti:sapphire laser is offset-locked to an Rb-stabilized diode laser. This partially stabilized frequency comb stays locked, unattended, for hours at a time. Using the measured offset frequency and repetition rate, we calculate the frequency of each comb mode with absolute uncertainty of about 10 kHz in a 10 s measurement window. We demonstrate the capabilities and limitations of this approach with measurements in Rb, Cs, and Ca.
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Baerg K, Smith-Fehr J, Irwin H, Lyon M. 72: Accuracy Testing of Transcutaneous Jaundice Meters: Should Transcutaneous Jaundice Meters be Used Right Out of the Box? Paediatr Child Health 2014. [DOI: 10.1093/pch/19.6.e35-70] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Shiver S, Reynolds B, Bird C, Lyon M. Overall Compliance and the Effect of Insurance on Outpatient Stress Testing as Part of an Accelerated Diagnostic Protocol for Low Risk Chest Pain. Ann Emerg Med 2013. [DOI: 10.1016/j.annemergmed.2013.07.385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Patel D, Reynolds B, Lyon M, Szerlip M, Renwick E, Szerlip H. 406 Effect of Acidemia on Cardiac Function. Ann Emerg Med 2012. [DOI: 10.1016/j.annemergmed.2012.06.438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lyon M, Luangruangrong L, Ganapathy P, Joshi S, Reynolds B, Yadegar J. 218 Comparison of 2D to 3D Derived Ultrasonography Measurements of the Optic Nerve Sheath in Traumatic Brain Injury. Ann Emerg Med 2012. [DOI: 10.1016/j.annemergmed.2012.06.196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Miller N, Lyon M, Shiver S. 311 Use of Point of Care Ultrasonography for New Onset Renal Colic. Ann Emerg Med 2012. [DOI: 10.1016/j.annemergmed.2012.06.289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kacinik V, Lyon M, Purnama M, Reimer RA, Gahler R, Green TJ, Wood S. Effect of PGX, a novel functional fibre supplement, on subjective ratings of appetite in overweight and obese women consuming a 3-day structured, low-calorie diet. Nutr Diabetes 2011; 1:e22. [PMID: 23154443 PMCID: PMC3302126 DOI: 10.1038/nutd.2011.18] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Introduction: Dietary factors that help control perceived hunger might improve adherence to calorie-reduced diets. Objectives: The objective of the study was to investigate the effect of supplementing a three-day, low-calorie diet with PolyGlycopleX (PGX), a highly viscous fibre, on subjective ratings of appetite compared with a placebo. Methods: In a double-blind crossover design with a 3-week washout, 45 women (aged 38±9 years, body mass index 29.9±2.8 kg m−2) were randomised to consume a 1000-kcal per day diet for 3 days, supplemented with 5 g of PGX or placebo at each of breakfast, lunch and dinner. Subjective appetite was assessed using 100 mm visual analogue scales that were completed daily before, between and after consumption of meals. Results: Thirty-five women completed the study. Consumption of PGX compared with placebo led to significantly lower mean area under the curve for hunger on day 3 (440.4 versus 375.4; P=0.048), prospective consumption on day 3 (471.0 versus 401.8; P=0.017) and the overall 3-day average (468.6 versus 420.2; P=0.026). More specifically, on day 3 PGX significantly reduced total appetite, hunger, desire to eat and prospective consumption for 2.5 and 4.5 h after lunch and before dinner times, with hunger also being reduced 2.5 h after dinner (P<0.05). Conclusion: The results show that adding 5 g of PGX to meals during consumption of a low-calorie diet reduces subjective ratings of prospective consumption and increases the feelings of satiety, especially during afternoon and evening. This highly viscous polysaccharide may be a useful adjunct to weight-loss interventions involving significant caloric reductions.
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Affiliation(s)
- V Kacinik
- Canadian Centre for Functional Medicine, Coquitlam, British Columbia, Canada
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Lyon M, Schwartz R, Lerner B, Wedmore I, Slane M. 280 Use of the Abdominal Aortic Tourniquet to Reduce or Eliminate Flow in the Common Femoral Artery in Human Subjects. Ann Emerg Med 2011. [DOI: 10.1016/j.annemergmed.2011.06.310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Robinson DO, Lin F, Lyon M, Raponi M, Cross E, White HE, Cox H, Clayton-Smith J, Baralle D. Systematic screening of FBN1 gene unclassified missense variants for splice abnormalities. Clin Genet 2011; 82:223-31. [PMID: 21895641 DOI: 10.1111/j.1399-0004.2011.01781.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Defects at the level of pre-mRNA splicing are a common source of genetic mutation but such mutations are not always easy to identify from DNA sequence data alone. Clinical practice has only recently begun to incorporate analysis for this type of abnormality. Some base changes at the DNA level currently viewed as unclassified variants or missense mutations may influence RNA splicing. To address this problem for fibrillin 1 (FBN1) gene missense mutations we have carried out RNA analysis and in silico analysis with splice site prediction programs on 40 cases with 36 different mutations. Direct analysis of RNA from blood was performed by cDNA preparation, PCR amplification of specific FBN1 fragments, gel electrophoresis and sequencing of the PCR products. Of the 36 missense base changes, direct RNA analysis identified 2 which caused an abnormality of splicing. In silico analysis using five splice site prediction programs did not always accurately predict the splicing seen by direct RNA analysis. In conclusion, some apparent missense mutations have an effect on splicing which can be identified by direct RNA analysis, however, in silico analysis of splice sites is not always accurate, should be carried out with more than one prediction program and results should be used with caution.
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Affiliation(s)
- D O Robinson
- Wessex Regional Genetics Laboratory, Salisbury District Hospital, Salisbury, Wiltshire SP2 8BJ, UK.
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Lyon M, Wood S, Pelletier X, Donazzolo Y, Gahler R, Bellisle F. Effects of a 3-month supplementation with a novel soluble highly viscous polysaccharide on anthropometry and blood lipids in nondieting overweight or obese adults. J Hum Nutr Diet 2011; 24:351-9. [PMID: 21414045 DOI: 10.1111/j.1365-277x.2011.01157.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND High viscosity fibre is known to exert many beneficial effects on appetite and metabolism. It could potentially help in weight management, in dieting or nondieting individuals. The present study investigated the effects of the daily intake of a novel high viscosity polysaccharide (HVP) over 3 months in nondieting obese or overweight men and women. METHODS The study comprised a double-blind, randomised controlled clinical trial. Participants ingested 5-15 g per day of either HVP (n = 29, experimental group) or inulin (n = 30, control group) for 15 weeks. Changes in anthropometry (weight, waist and hip circumferences), blood lipids and glucose tolerance were studied from the beginning to the end of administration. Compliance and tolerance were examined. RESULTS Differences appeared between HVP and inulin supplementation in female participants only. Mean (SD) decreases in body weight [1.6 (3.2) kg; approximately 2% of initial weight] and hip circumference [2.8 (3.6 ) cm] occurred in women of the HVP group but not in controls (Time × Group interactions, P ≤ 0.002). Total, high-density lipoprotein and low-density lipoprotein-cholesterol were lower at the end of supplementation in the women of the HVP group compared to controls (P ≤ 0.021). No effect appeared in waist circumference and triacylglycerol. No difference was noted in the number or severity of the adverse effects reported in both groups. Adverse effects were mild and agreed with commonly reported reactions to intake of dietary fibre. CONCLUSIONS Beneficial although modest effects appeared after several weeks of daily HVP intake in nondieting obese or overweight women. The effects of HVP should be investigated in the context of a weight loss programme.
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Affiliation(s)
- M Lyon
- Canadian Centre for Functional Medicine, Coquitlam, BC
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Lyon M, Schreiber M, Coker T, Naidu K. 297: Barriers to Use of Ultrasonography for Vascular Access by Emergency Nurses. Ann Emerg Med 2010. [DOI: 10.1016/j.annemergmed.2010.06.347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tinegate HN, Davies T, Elshaw RJ, Jane G, Lyon M, Norfolk DR, Plews DE, Troy CB, Watson D. When and why is blood crossmatched? A prospective survey of transfusion laboratory practice in two regions in the north of England. Vox Sang 2010; 99:163-7. [PMID: 20202181 DOI: 10.1111/j.1423-0410.2010.01317.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVES This study was undertaken to provide data relating to the timing of laboratory crossmatch procedures, and the source of requests for out of hours crossmatch, to support interpretation of error reports originating in the transfusion laboratory, received by the Serious Hazards of Transfusion haemovigilance scheme. MATERIALS AND METHODS Data on the timing, origin and urgency of all crossmatch requests were collected in 34 hospitals in northern England over a 7-day period in 2008. Additional data on clinical urgency were collected on crossmatches that were performed out of hours. RESULTS Data were obtained on 2423 crossmatches, including 610 (25.2%) performed outside core hours. 30.3% of out of hours crossmatch requests were for transfusions that were set up outside 4 h of completion of the crossmatch. CONCLUSION 2008 Serious Hazards of Transfusion data showed that 29/39 (74%) of laboratory errors resulting in 'wrong blood' occurred out of hours whilst our audit shows that only 25% of crossmatch requests are made in that time period, suggesting that crossmatching performed outside core hours carries increased risks. The reason for increased risk of error needs further research, but 25 laboratories had only one member of staff working out of hours, often combining blood transfusion, haematology and coagulation work. A total of 25% of out of hours requests were not clinically urgent. Hospitals should develop policies to define indications for out of hours transfusion testing, empower laboratory staff to challenge inappropriate requests and ensure that staffing and expertise is appropriate for the workload at all times.
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Affiliation(s)
- H N Tinegate
- NHS Blood and Transplant, National Blood Service, Holland Drive, Newcastle, UK.
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Reimer RA, Pelletier X, Carabin IG, Lyon M, Gahler R, Parnell JA, Wood S. Increased plasma PYY levels following supplementation with the functional fiber PolyGlycopleX in healthy adults. Eur J Clin Nutr 2010; 64:1186-91. [DOI: 10.1038/ejcn.2010.141] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sarrazin S, Lyon M, Deakin JA, Guerrini M, Lassalle P, Delehedde M, Lortat-Jacob H. Characterization and binding activity of the chondroitin/dermatan sulfate chain from Endocan, a soluble endothelial proteoglycan. Glycobiology 2010; 20:1380-8. [DOI: 10.1093/glycob/cwq100] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Wainer S, Lyon M, Parmar SM, Allegro D, Gray D, Rami J, Baskin LB. Laboratory And Clinical Outcomes of a Regional Transcutaneous Bilirubinometry (Tcb) Program. Paediatr Child Health 2010. [DOI: 10.1093/pch/15.suppl_a.27a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Vuksan V, Panahi S, Lyon M, Rogovik AL, Jenkins AL, Leiter LA. Viscosity of fiber preloads affects food intake in adolescents. Nutr Metab Cardiovasc Dis 2009; 19:498-503. [PMID: 19157816 DOI: 10.1016/j.numecd.2008.09.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Revised: 09/11/2008] [Accepted: 09/16/2008] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND AIMS Dietary fiber that develops viscosity in the gastrointestinal tract is capable of addressing various aspects of food intake control. The aim of this study was to assess subsequent food intake and appetite in relation to the level of viscosity following three liquid preloads each containing 5 g of either a high (novel viscous polysaccharide; NVP), medium (glucomannan; GLM), or low (cellulose; CE) viscosity fiber. METHODS AND RESULTS In this double-blind, randomized, controlled and crossover trial, 31 healthy weight adolescents (25 F:6 M; age 16.1+/-0.6 years; BMI 22.2+/-3.7 kg/m(2)) consumed one of the three preloads 90 min prior to an ad libitum pizza meal. Preloads were identical in taste, appearance, nutrient content and quantity of fiber, but different in their viscosities (10, 410, and 700 poise for CE, GLM, and NVP, respectively). Pizza intake was significantly lower (p=0.008) after consumption of the high-viscosity NVP (278+/-111 g) compared to the medium-viscosity GLM (313+/-123 g) and low-viscosity CE (316+/-138 g) preloads, with no difference between the GLM and CE preloads. Appetite scores, physical symptoms and 24-h intake did not differ among treatment groups. CONCLUSION A highly viscous NVP preload leads to reduced subsequent food intake, in terms of both gram weight and calories, in healthy weight adolescents. This study provides preliminary evidence of an independent contribution of viscosity on food intake and may form a basis for further studies on factors influencing food intake in adolescents.
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Affiliation(s)
- V Vuksan
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
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Lyon M, Walton P, Bloch A, Shiver S. 321: Out-of-Hospital Critical Care Providers' Retention of Ultrasound Skills for Diagnosis of Pneumothoraces: A Nine-Month Follow-Up. Ann Emerg Med 2009. [DOI: 10.1016/j.annemergmed.2009.06.352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bloch A, Lyon M, Humphries F, Stoeber J, Shiver S. 327: Correlation of β-hCG and Ultrasound Diagnosis of Ectopic Pregnancy in the Emergency Department. Ann Emerg Med 2009. [DOI: 10.1016/j.annemergmed.2009.06.358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Illston B, Lyon M, Caudell M, DiCarlo J. 284: Intra-Articular Foreign Body Evaluation: Ultrasound versus Fluoroscopy. Ann Emerg Med 2009. [DOI: 10.1016/j.annemergmed.2009.06.314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Lyon M, Sinex J, Shiver S, Bloch A, Flake M. 222: Nurse Utilization of Ultrasound Guidance for Peripheral IV Placement in the Emergency Department: Does It Change Over Time? Ann Emerg Med 2009. [DOI: 10.1016/j.annemergmed.2009.06.251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Stoian CA, Mah JK, Cox RG, Lyon M, Stephure D. Vitamin D Concentrations and Nutritional Status of Healthy Children Living in Calgary. Paediatr Child Health 2009. [DOI: 10.1093/pch/14.suppl_a.39a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sinclair D, Renwick E, Lyon M. 107: Comparison of Outcomes Before and After Implementation of an Observation Unit Clinical Pathway for Uncomplicated Sickle Cell Vaso-Occulusive Crisis. Ann Emerg Med 2008. [DOI: 10.1016/j.annemergmed.2008.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Blaivas M, Adhikari S, Shiver S, Lyon M. 277: Transfer of Real-Time Ultrasound Video of FAST Examinations from Victims at a Disaster Scene Via a Commercially Available Video Cell Phone. Ann Emerg Med 2008. [DOI: 10.1016/j.annemergmed.2008.06.296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Shiver S, Lyon M, Adhikari S, Blaivas M. 306: Lower Extremity Deep Venous Thrombosis in Emergency Department Patients Undergoing Workup for Pulmonary Embolism. Ann Emerg Med 2008. [DOI: 10.1016/j.annemergmed.2008.06.329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Calhoun D, Sessums C, Lyon M. 248: Effectiveness of a 6-hour versus a 9-hour Rule Out Protocol for the Evaluation of Low to Moderate Risk Chest Pain Patients in an Observation Unit. Ann Emerg Med 2008. [DOI: 10.1016/j.annemergmed.2008.06.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Deakin JA, Lyon M. A simplified and sensitive fluorescent method for disaccharide analysis of both heparan sulfate and chondroitin/dermatan sulfates from biological samples. Glycobiology 2008; 18:483-91. [DOI: 10.1093/glycob/cwn028] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Saha DC, Goldman DL, Shao X, Casadevall A, Husain S, Limaye AP, Lyon M, Somani J, Pursell K, Pruett TL, Singh N. Serologic evidence for reactivation of cryptococcosis in solid-organ transplant recipients. Clin Vaccine Immunol 2007; 14:1550-4. [PMID: 17959819 PMCID: PMC2168388 DOI: 10.1128/cvi.00242-07] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2007] [Revised: 09/19/2007] [Accepted: 10/15/2007] [Indexed: 11/20/2022]
Abstract
Cryptococcosis is a significant infection with a high mortality in solid-organ transplant recipients. Nonetheless, the pathogenesis of this disease is poorly understood. It has been hypothesized that cryptococcosis may result from either primary infection or reactivation of a latent infection. Sera were obtained from transplant recipients prior to transplantation and at the time they developed cryptococcosis. Control sera were obtained before and after transplant from patients who did not develop cryptococcosis. Sera were tested for antibodies against Cryptococcus neoformans by using an immunoblot assay. Antibody responses were also compared with those observed in sera from rats with experimental pulmonary cryptococcosis. In all, 52% of the transplant recipients who developed cryptococcosis exhibited serologic evidence of cryptococcal infection before transplantation. These patients developed cryptococcosis significantly earlier after transplant than patients without preexisting reactivity did (5.6 +/- 3.4 months compared to 40.6 +/- 63.8 months, respectively [P = 0.0011]). The results from our study suggest that a substantial proportion of transplant-associated cryptococcosis cases result from the reactivation of a latent infection. These findings also highlight the potential utility of serologic studies in identifying patients at risk for the development of cryptococcosis after transplantation.
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Affiliation(s)
- D C Saha
- Infectious Diseases Section, VA Medical Center, University Drive C, Pittsburgh, PA 15240, USA
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Blaivas M, Adhikari S, Lyon M. 217: An Unseen Danger: Frequency Of Posterior Vessel Wall Penetration By Needles During Ultrasound Guided Internal Jugular Vein Central Line Placement. Ann Emerg Med 2007. [DOI: 10.1016/j.annemergmed.2007.06.369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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