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Article ; Online: Use of a smartphone plant identification application in a toxic plant ingestion.

Tawadrous, Davy / Doran, Sean / Davis, Matthew

CJEM

2020 Volume 22, Issue 4, Page(s) 549–551

Language	English
Publishing date	2020-05-12
Publishing country	England
Document type	Journal Article
ISSN	1481-8043
ISSN (online)	1481-8043
DOI	10.1017/cem.2020.30
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Quality of abdominal ultrasound image acquisition by novice practitioners following a minimal training session on healthy volunteers.

Waterman, Bradley / Van Aarsen, Kristine / Lewell, Michael / Myslik, Frank / Peddle, Michael / Doran, Sean

CJEM

2020 Volume 22, Issue S2, Page(s) S74–S78

Abstract: Background: Point of care ultrasound (POCUS) is an essential tool for physicians to guide treatment decisions in both hospital and prehospital settings. Despite the potential patient care and system utilization benefits of prehospital ultrasound, the ... ...

Abstract	Background: Point of care ultrasound (POCUS) is an essential tool for physicians to guide treatment decisions in both hospital and prehospital settings. Despite the potential patient care and system utilization benefits of prehospital ultrasound, the financial burden of a "hands-on" training program for large numbers of paramedics remains a barrier to implementation. In this study, we conducted a prospective, observational, double-blinded study comparing paramedics to emergency physicians in their ability to generate usable abdominal ultrasound images after a 1-hour didactic training session. Methods: Canadian aeromedical critical care paramedics were compared against emergency medicine physicians in their ability to generate adequate abdominal ultrasound images on five healthy volunteers. Quality of each scan was evaluated by a trained expert in POCUS who was blinded to the identity of the participant using a 5-point Likert scale and using the standardized QUICk Focused Assessment with Sonography in Trauma (FAST) assessment tool. Results: Fourteen Critical care paramedics and four emergency department (ED) physicians were voluntarily recruited. Of paramedics, 57% had never used ultrasound before, 36% has used ultrasound without formal training, and 7% had previous training. Physicians had a higher proportion of usable scans compared with paramedics (100% v. 61.4%, Δ38.6%; 95% confidence interval, 19.3-50.28). Conclusions: Paramedics were not able to produce images of interpretable quality at the same frequency when compared with emergency medicine physicians. However, a 61.4% usable image rate for paramedics following a short 1-hour didactic training session is promising for future studies, which could incorporate a short hands-on tutorial while remaining cost-effective.
MeSH term(s)	Abdomen/diagnostic imaging ; Canada ; Emergency Medical Services ; Healthy Volunteers ; Humans ; Prospective Studies ; Ultrasonography
Language	English
Publishing date	2020-10-20
Publishing country	England
Document type	Journal Article ; Observational Study
ISSN	1481-8043
ISSN (online)	1481-8043
DOI	10.1017/cem.2020.29
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Photoinduced Electron Transfer Reactions for Macromolecular Syntheses

Dadashi-Silab, Sajjad / Doran Sean / Yagci Yusuf

Chemical Reviews. 2016 Sept. 14, v. 116, no. 17

2016

Abstract: Photochemical reactions, particularly those involving photoinduced electron transfer processes, establish a substantial contribution to the modern synthetic chemistry, and the polymer community has been increasingly interested in exploiting and ... ...

Abstract	Photochemical reactions, particularly those involving photoinduced electron transfer processes, establish a substantial contribution to the modern synthetic chemistry, and the polymer community has been increasingly interested in exploiting and developing novel photochemical strategies. These reactions are efficiently utilized in almost every aspect of macromolecular architecture synthesis, involving initiation, control of the reaction kinetics and molecular structures, functionalization, and decoration, etc. Merging with polymerization techniques, photochemistry has opened up new intriguing and powerful avenues for macromolecular synthesis. Construction of various polymers with incredibly complex structures and specific control over the chain topology, as well as providing the opportunity to manipulate the reaction course through spatiotemporal control, are one of the unique abilities of such photochemical reactions. This review paper provides a comprehensive account of the fundamentals and applications of photoinduced electron transfer reactions in polymer synthesis. Besides traditional photopolymerization methods, namely free radical and cationic polymerizations, step-growth polymerizations involving electron transfer processes are included. In addition, controlled radical polymerization and âClick Chemistryâ methods have significantly evolved over the last few decades allowing access to narrow molecular weight distributions, efficient regulation of the molecular weight and the monomer sequence and incredibly complex architectures, and polymer modifications and surface patterning are covered. Potential applications including synthesis of block and graft copolymers, polymer-metal nanocomposites, various hybrid materials and bioconjugates, and sequence defined polymers through photoinduced electron transfer reactions are also investigated in detail.
Keywords	chemical structure ; composite polymers ; electron transfer ; free radicals ; molecular weight ; nanocomposites ; photochemical reactions ; polymerization ; reaction kinetics ; topology
Language	English
Dates of publication	2016-0914
Size	p. 10212-10275.
Publishing place	American Chemical Society
Document type	Article
ZDB-ID	207949-5
ISSN	1520-6890 ; 0009-2665
ISSN (online)	1520-6890
ISSN	0009-2665
DOI	10.1021%2Facs.chemrev.5b00586
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Article ; Online: Photoinduced Electron Transfer Reactions for Macromolecular Syntheses.

Dadashi-Silab, Sajjad / Doran, Sean / Yagci, Yusuf

Chemical reviews

2016 Volume 116, Issue 17, Page(s) 10212–10275

Abstract	Photochemical reactions, particularly those involving photoinduced electron transfer processes, establish a substantial contribution to the modern synthetic chemistry, and the polymer community has been increasingly interested in exploiting and developing novel photochemical strategies. These reactions are efficiently utilized in almost every aspect of macromolecular architecture synthesis, involving initiation, control of the reaction kinetics and molecular structures, functionalization, and decoration, etc. Merging with polymerization techniques, photochemistry has opened up new intriguing and powerful avenues for macromolecular synthesis. Construction of various polymers with incredibly complex structures and specific control over the chain topology, as well as providing the opportunity to manipulate the reaction course through spatiotemporal control, are one of the unique abilities of such photochemical reactions. This review paper provides a comprehensive account of the fundamentals and applications of photoinduced electron transfer reactions in polymer synthesis. Besides traditional photopolymerization methods, namely free radical and cationic polymerizations, step-growth polymerizations involving electron transfer processes are included. In addition, controlled radical polymerization and "Click Chemistry" methods have significantly evolved over the last few decades allowing access to narrow molecular weight distributions, efficient regulation of the molecular weight and the monomer sequence and incredibly complex architectures, and polymer modifications and surface patterning are covered. Potential applications including synthesis of block and graft copolymers, polymer-metal nanocomposites, various hybrid materials and bioconjugates, and sequence defined polymers through photoinduced electron transfer reactions are also investigated in detail.
Language	English
Publishing date	2016-09-14
Publishing country	United States
Document type	Journal Article
ZDB-ID	207949-5
ISSN	1520-6890 ; 0009-2665
ISSN (online)	1520-6890
ISSN	0009-2665
DOI	10.1021/acs.chemrev.5b00586
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Article: 21st century manager imperatives.

Doran, Sean P

Occupational health & safety (Waco, Tex.)

2006 Volume 75, Issue 4, Page(s) 16, 18

MeSH term(s)	Administrative Personnel ; History, 21st Century ; Humans ; Occupational Health ; Professional Role ; United States
Language	English
Publishing date	2006-04
Publishing country	United States
Document type	Historical Article ; Journal Article
ZDB-ID	752994-6
ISSN	0362-4064
ISSN	0362-4064
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Article: Tandem Photoinduced Cationic Polymerization and CuAAC for Macromolecular Synthesis

Doran, Sean / Yagci Yusuf / Yilmaz Gorkem

Macromolecules. 2015 Oct. 27, v. 48, no. 20

2015

Abstract: A novel synthetic strategy involving sequential photoinduced cationic and copper-catalyzed azide–alkyne cycloaddition (CuAAC) click processes for the synthesis of complex macromolecular structures such as side-chain functional polymers, graft copolymers, ...

Abstract	A novel synthetic strategy involving sequential photoinduced cationic and copper-catalyzed azide–alkyne cycloaddition (CuAAC) click processes for the synthesis of complex macromolecular structures such as side-chain functional polymers, graft copolymers, and organogels is described. In the approach, first a set of copolymers possessing side-chain alkyne or halide functionalities, namely, poly(cyclohexene oxide-co-glycidyl propargyl ether) (P(CHO-co-GPE)), poly(cyclohexene oxide-co-epichlorohydrin) (P(CHO-co-ECH)), and poly(tetrahydrofuran-co-epichlorohydrin) (P(THF-co-ECH)), were synthesized by photoinitiated free-radical-promoted cationic copolymerization of the corresponding monomers using phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide (BAPO) and diphenyl iodonium hexafluorophosphate (Ph2I+PF6–) as free radical photoinitiator and oxidant, respectively. While P(CHO-co-GPE) readily contained clickable alkyne side-chains, the halide groups of P(THF-co-ECH) were converted to azide groups by conventional azidation procedure using NaN3 in DMF. Model side-chain functionalization, grafting onto, and organogel formation were demonstrated by using P(CHO-co-GPE) and azidated P(THF-co-ECH) via photoinduced CuAAC reactions. The intermediate polymers formed in various stages and final polymers were characterized by spectral analysis and gel permeation chromatography.
Keywords	alkynes ; azides ; biphenyl ; composite polymers ; copolymerization ; cycloaddition reactions ; cyclohexenes ; free radicals ; gel chromatography ; models ; organogels ; oxidants ; phosphine ; spectral analysis
Language	English
Dates of publication	2015-1027
Size	p. 7446-7452.
Publishing place	American Chemical Society
Document type	Article
ZDB-ID	1491942-4
ISSN	1520-5835 ; 0024-9297
ISSN (online)	1520-5835
ISSN	0024-9297
DOI	10.1021%2Facs.macromol.5b01857
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Article ; Online: Abdominal ultrasound image acquisition and interpretation by novice practitioners after minimal training on a simulated patient model.

Waterman, Bradley / Van Aarsen, Kristine / Lewell, Michael / Tien, Homer / Myslik, Frank / Peddle, Michael / Doran, Sean

CJEM

2020 Volume 22, Issue S2, Page(s) S62–S66

Abstract: Background: The Focused Assessment with Sonography in Trauma (FAST) exam is a rapid ultrasound test to identify evidence of hemorrhage within the abdomen. Few studies examine the accuracy of paramedic performed FAST examinations. The duration of an ... ...

Abstract	Background: The Focused Assessment with Sonography in Trauma (FAST) exam is a rapid ultrasound test to identify evidence of hemorrhage within the abdomen. Few studies examine the accuracy of paramedic performed FAST examinations. The duration of an ultrasound training program remains controversial. This study's purpose was to assess the accuracy of paramedic FAST exam interpretation following a one hour didactic training session. Methods: The interpretation of paramedic performed FAST exams was compared to the interpretation of physician performed FAST examinations on a mannequin model containing 300ml of free fluid following a one hour didactic training course. Results were compared using the Chi-square test. Differences in accuracy rate were deemed significant if p < 0.05. Results: Fourteen critical care flight paramedics and four emergency physicians were voluntarily recruited. The critical care paramedics were mostly ultrasound-naive whereas the emergency physicians all had ultrasound training. The correct interpretation of FAST scans was comparable between the two groups with accuracy of 85.6% and 87.5% (∆1.79 95%CI -33.85 to 21.82, p = 0.90) for paramedics and emergency physicians respectively. Conclusions: This study determined that critical care paramedics were able to use ultrasound to detect free fluid on a simulated mannequin model and interpret the FAST exam with a similar accuracy as experienced emergency physicians following a one hour training course. This suggests the potential use of prehospital ultrasound to aid in the triage and transport decisions of trauma patients while limiting the financial and logistical burden of ultrasound training.
MeSH term(s)	Abdomen/diagnostic imaging ; Allied Health Personnel ; Clinical Competence ; Education, Medical, Continuing ; Emergency Medical Technicians ; Humans ; Triage ; Ultrasonography
Language	English
Publishing date	2020-10-20
Publishing country	England
Document type	Journal Article
ISSN	1481-8043
ISSN (online)	1481-8043
DOI	10.1017/cem.2019.495
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Article: One-Pot Photo-Induced Sequential CuAAC and Thiol–Ene Click Strategy for Bioactive Macromolecular Synthesis

Doran, Seán / Barlas FiratBaris / Murtezi Eljesa / Timur Suna / Yagci Yusuf

Macromolecules. 2014 June 10, v. 47, no. 11

2014

Abstract: Conceptually new one-pot photoinduced sequential click reactions were implemented to yield novel block copolymers with the ability for cell adhesion. Poly(ε-caprolcatone) possessing clickable functional groups at the chain ends, namely α-alkynyl-ω- ... ...

Abstract	Conceptually new one-pot photoinduced sequential click reactions were implemented to yield novel block copolymers with the ability for cell adhesion. Poly(ε-caprolcatone) possessing clickable functional groups at the chain ends, namely α-alkynyl-ω-alkenyl-poly(ε-caprolactone) (A-PCL-MA), was prepared by ring-opening polymerization of ε-caprolactone using propargyl alcohol in the presence of stannous octoate at 110 °C followed by esterification with methacrylic acid. Azide-functional poly(methyl methacrylate) (PMMA-N3) was prepared independently by atom transfer radical polymerization (ATRP) followed by an azidation process using sodium azide. Finally, A-PCL-MA was reacted with PMMA-N3 and N-acetyl-l-cysteine (NAC) in a one-pot process through photoinduced sequential click reactions to furnish desired bioactive block copolymer (PMMA-b-PCL-NAC). A matrix for cell adhesion was then prepared from the yielded block copolymer PMMA-b-PCL-NAC and cell proliferation on the matrix was measured. Cells from the Vero cell line (African green monkey kidney epithelial) were incubated on the matrix, and after 48 h, they showed greater cell proliferation than the commercially available cell culture plates used as comparison.
Keywords	acetylcysteine ; alcohols ; cell adhesion ; cell culture ; cell lines ; cell proliferation ; Cercopithecus aethiops ; composite polymers ; epithelium ; esterification ; kidneys ; moieties ; polymerization ; polymethylmethacrylate ; sodium azide
Language	English
Dates of publication	2014-0610
Size	p. 3608-3613.
Publishing place	American Chemical Society
Document type	Article
ZDB-ID	1491942-4
ISSN	1520-5835 ; 0024-9297
ISSN (online)	1520-5835
ISSN	0024-9297
DOI	10.1021%2Fma5007039
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Selective Cell Adhesion and Biosensing Applications of Bio-Active Block Copolymers Prepared by CuAAC/Thiol-ene Double Click Reactions.

Oyman Eyrilmez, Gizem / Doran, Sean / Murtezi, Eljesa / Demir, Bilal / Odaci Demirkol, Dilek / Coskunol, Hakan / Timur, Suna / Yagci, Yusuf

Macromolecular bioscience

2015 Volume 15, Issue 9, Page(s) 1233–1241

Abstract: N-Acetyl-l-cysteine (NAC)-capped poly(methyl methacrylate)-b-polycaprolactone block copolymer (PMMA-b-PCL-NAC) was prepared using the previously described one-pot photoinduced sequential CuAAC/thiol-ene double click procedure. PMMA-b-PCL-NAC had ... ...

Abstract	N-Acetyl-l-cysteine (NAC)-capped poly(methyl methacrylate)-b-polycaprolactone block copolymer (PMMA-b-PCL-NAC) was prepared using the previously described one-pot photoinduced sequential CuAAC/thiol-ene double click procedure. PMMA-b-PCL-NAC had previously shown good applicability as a matrix for cell adhesion of cells from the Vero cell line (African green monkey kidney epithelial). Here, in this work, PMMA-b-PCL-NAC served as an excellent immobilization matrix for biomolecule conjugation. Covalent binding of RGD (R: arginine, G: glycine, and D: aspartic acid) peptide sequence onto the PMMA-b-PCL-NAC-coated surface was performed via EDC chemistry. RGD-modified PMMA-b-PCL-NAC (PMMA-b-PCL-NAC-RGD) as a non-toxic cell proliferation platform was used for selective "integrin αvβ3-mediated cell adhesion and biosensing studies. Both optical and electrochemical techniques were used to monitor the adhesion differences between "integrin αvβ3" receptor positive and negative cell lines on to the designed biofunctional surfaces.
MeSH term(s)	Animals ; Biosensing Techniques ; Cell Adhesion ; Cell Line, Tumor ; Click Chemistry ; Humans ; Keratinocytes/physiology ; Methylmethacrylates/chemistry ; Oligopeptides/metabolism ; Polyesters/chemistry ; Protein Binding ; Surface Properties ; Tissue Scaffolds
Chemical Substances	Methylmethacrylates ; Oligopeptides ; Polyesters ; poly(methyl methacrylate)-b-polycaprolactone-N-acetylcysteine ; arginyl-glycyl-aspartic acid (78VO7F77PN)
Language	English
Publishing date	2015-09
Publishing country	Germany
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2039130-4
ISSN	1616-5195 ; 1616-5187
ISSN (online)	1616-5195
ISSN	1616-5187
DOI	10.1002/mabi.201500099
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Article: Primary and Secondary Aminophosphines as Novel P-Stereogenic Building Blocks for Ligand Synthesis

Revés, Marc / Ferrer, Catalina / León, Thierry / Doran, Sean / Etayo, Pablo / Vidal-Ferran, Anton / Riera, Antoni / Verdaguer, Xavier

Angewandte Chemie. 2010 Dec. 3, v. 49, no. 49

2010

Language	English
Dates of publication	2010-1203
Size	p. 9452-9455.
Publishing place	Wiley-VCH Verlag
Document type	Article
ZDB-ID	2011836-3
ISSN	1521-3773 ; 1433-7851
ISSN (online)	1521-3773
ISSN	1433-7851
DOI	10.1002/anie.201004041
Database	NAL-Catalogue (AGRICOLA)

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