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Article ; Online: A protocol for the stereoselective synthesis of a Star of David [2]catenane.

Ye, Weitao / Feng, Hai-Na / Zhang, Zhi-Hui / Zhang, Liang

STAR protocols

2024 Volume 5, Issue 1, Page(s) 102821

Abstract: Most complex prime links exhibit inherent topological chirality, yet their high stereoinduction remains a rare occurrence. Here, we present a protocol for the stereoselective synthesis of a molecular link comprising two triple entwined rings. We describe ...

Abstract	Most complex prime links exhibit inherent topological chirality, yet their high stereoinduction remains a rare occurrence. Here, we present a protocol for the stereoselective synthesis of a molecular link comprising two triple entwined rings. We describe steps for constructing the precursor circular helicate, performing ring closure metathesis, and demetallation. We also outline procedures for bio-beads separation and data analysis. This protocol holds promise for applications in molecular nanotopology. For complete details on the use and execution of this protocol, please refer to Zhang et al. (2022).
MeSH term(s)	Anthracenes ; Data Analysis ; Catenanes
Chemical Substances	catenane ; Anthracenes ; Catenanes
Language	English
Publishing date	2024-01-06
Publishing country	United States
Document type	Journal Article
ISSN	2666-1667
ISSN (online)	2666-1667
DOI	10.1016/j.xpro.2023.102821
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Article ; Online: A protocol for the stereoselective synthesis of a Star of David [2]catenane

Weitao Ye / Hai-Na Feng / Zhi-Hui Zhang / Liang Zhang

STAR Protocols, Vol 5, Iss 1, Pp 102821- (2024)

2024

Abstract: Summary: Most complex prime links exhibit inherent topological chirality, yet their high stereoinduction remains a rare occurrence. Here, we present a protocol for the stereoselective synthesis of a molecular link comprising two triple entwined rings. We ...

Abstract	Summary: Most complex prime links exhibit inherent topological chirality, yet their high stereoinduction remains a rare occurrence. Here, we present a protocol for the stereoselective synthesis of a molecular link comprising two triple entwined rings. We describe steps for constructing the precursor circular helicate, performing ring closure metathesis, and demetallation. We also outline procedures for bio-beads separation and data analysis. This protocol holds promise for applications in molecular nanotopology.For complete details on the use and execution of this protocol, please refer to Zhang et al. (2022).1 : Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
Keywords	Chemistry ; Material sciences ; Science (General) ; Q1-390
Language	English
Publishing date	2024-03-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
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Article ; Online: Daily ambulatory remote monitoring system for drug escalation in chronic heart failure with reduced ejection fraction: pilot phase of DAVID-HF study.

European heart journal. Digital health

2022 Volume 3, Issue 2, Page(s) 284–295

Abstract: Aims: Underutilization of guideline-directed heart failure with reduced ejection fraction (HFrEF) medications contributes to poor outcomes.: Methods and results: A pilot study to evaluate the safety and efficacy of a home-based remote monitoring ... ...

Abstract	Aims: Underutilization of guideline-directed heart failure with reduced ejection fraction (HFrEF) medications contributes to poor outcomes. Methods and results: A pilot study to evaluate the safety and efficacy of a home-based remote monitoring system for HFrEF management was performed. The system included wearable armband monitors paired with the smartphone application. An HFrEF medication titration algorithm was used to adjust medication daily. The primary endpoint was HFrEF medication utilization at 120 days. Twenty patients (60.5 ± 8.2 years, men: 85%) with HFrEF were recruited. All received angiotensin-converting enzyme inhibitor (ACEI)/angiotensin receptor blocker (ARB)/angiotensin receptor-neprilysin inhibitor (ARNI) at recruitment; 45% received ≥50% maximal targeted dose (MTD) with % MTD of 44.4 ± 31.7%. At baseline, 90 and 70% received beta-adrenergic blocker and mineralocorticoid receptor antagonist (MRA), 35% received ≥50% MTD beta-adrenergic blocker with % MTD of 34.1 ± 29.6%, and 25% received ≥50% MTD MRA with % MTD of 25.0 ± 19.9%. At 120 days, 70% received ≥50% MTD ACEI/ARB/ARNI ( Conclusion: Heart failure with reduced ejection fraction medication escalation with remote monitoring appeared feasible.
Language	English
Publishing date	2022-05-07
Publishing country	England
Document type	Journal Article
ISSN	2634-3916
ISSN (online)	2634-3916
DOI	10.1093/ehjdh/ztac024
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Article ; Online: Incidence and progression of mild aortic regurgitation after Tirone David reimplantation valve-sparing aortic root replacement.

Stephens, Elizabeth H / Liang, David H / Kvitting, John-Peder Escobar / Kari, Fabian A / Fischbein, Michael P / Mitchell, R Scott / Miller, D Craig

The Journal of thoracic and cardiovascular surgery

2014 Volume 147, Issue 1, Page(s) 169–77, 178.e1–178.e3

Abstract: ... Between 2003 and 2008, 154 patients underwent Tirone David-V valve-sparing aortic root replacement; 96 ...

Abstract	Objective: The study objective was to determine whether recurrent or residual mild aortic regurgitation, which occurs after valve-sparing aortic root replacement, progresses over time. Methods: Between 2003 and 2008, 154 patients underwent Tirone David-V valve-sparing aortic root replacement; 96 patients (62%) had both 1-year (median, 12 ± 4 months) and mid-term (62 ± 22 months) transthoracic echocardiograms available for analysis. Age of patients averaged 38 ± 13 years, 71% were male, 31% had a bicuspid aortic valve, 41% had Marfan syndrome, and 51% underwent aortic valve repair, predominantly cusp free margin shortening. Results: Forty-one patients (43%) had mild aortic regurgitation on 1-year echocardiogram. In 85% of patients (n = 35), mild aortic regurgitation remained stable on the most recent echocardiogram (median, 57 ± 20 months); progression to moderate aortic regurgitation occurred in 5 patients (12%) at a median of 28 ± 18 months and remained stable thereafter; severe aortic regurgitation developed in 1 patient, eventually requiring reoperation. Five patients (5%) had moderate aortic regurgitation at 1 year, which did not progress subsequently. Two patients (2%) had more than moderate aortic regurgitation at 1 year, and both ultimately required reoperation. Conclusions: Although mild aortic regurgitation occurs frequently after valve-sparing aortic root replacement, it is unlikely to progress over the next 5 years and should not be interpreted as failure of the valve-preservation concept. Further, we suggest that mild aortic regurgitation should not be considered nonstructural valve dysfunction, as the 2008 valve reporting guidelines would indicate. We need 10- to 15-year follow-up to learn the long-term clinical consequences of mild aortic regurgitation early after valve-sparing aortic root replacement.
MeSH term(s)	Adolescent ; Adult ; Aorta/diagnostic imaging ; Aorta/surgery ; Aortic Valve/diagnostic imaging ; Aortic Valve/surgery ; Aortic Valve Insufficiency/diagnostic imaging ; Aortic Valve Insufficiency/epidemiology ; Aortic Valve Insufficiency/surgery ; Blood Vessel Prosthesis Implantation/adverse effects ; Blood Vessel Prosthesis Implantation/instrumentation ; Blood Vessel Prosthesis Implantation/methods ; Cardiac Surgical Procedures/adverse effects ; Chi-Square Distribution ; Child ; Disease Progression ; Female ; Follow-Up Studies ; Humans ; Incidence ; Kaplan-Meier Estimate ; Linear Models ; Male ; Middle Aged ; Multivariate Analysis ; Recurrence ; Reoperation ; Replantation/adverse effects ; Risk Factors ; Severity of Illness Index ; Time Factors ; Treatment Outcome ; Ultrasonography
Language	English
Publishing date	2014-01
Publishing country	United States
Document type	Journal Article
ZDB-ID	3104-5
ISSN	1097-685X ; 0022-5223
ISSN (online)	1097-685X
ISSN	0022-5223
DOI	10.1016/j.jtcvs.2013.09.009
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Article ; Online: Tirone David procedure for bicuspid aortic valve disease: impact of root geometry and valve type on mid-term outcomes.

Kari, Fabian A / Kvitting, John-Peder E / Stephens, Elizabeth H / Liang, David H / Merk, Denis R / Fischbein, Michael P / Mitchell, R Scott / Miller, D Craig

Interactive cardiovascular and thoracic surgery

2014 Volume 19, Issue 3, Page(s) 375–81; discussion 381

Abstract: ... A total of 85 BAV patients (68 males, age 44 ± 11 years) underwent Tirone David-V V-SARR between 1997 and ...

Abstract	Objectives: A 180/180° configuration has been reported to increase repair durability after valve-sparing aortic root replacement (V-SARR) for bicuspid aortic valve (BAV) disease. We studied the impact of commissural angular configuration (CAC) and of BAV type on valve performance after V-SARR. Methods: A total of 85 BAV patients (68 males, age 44 ± 11 years) underwent Tirone David-V V-SARR between 1997 and 2013. BAV type was documented intraoperatively, and CAC determined from pre- and postoperative computed tomography scans as the angle subtended by the non-fused cusp. Transthoracic echocardiogram was performed at 6 ± 3 days and at 2.9 ± 2.1 years. Functional end-points included freedom from aortic regurgitation (AR) 1+, AR 2+ and freedom from AR progression (0 to 1+, or 1+ to 2+). Tested variables included preoperative CAC (>160 vs <160°) and changes in CAC after V-SARR (Δ > 30° vs Δ < 30°) and Sievers' BAV type (SØ or S1). Results: CAC in SØ-BAV (n = 26) changed minimally from 164 ± 12 to 171 ± 11° (mean Δ = 7.2 ± 16°, P = 0.044), whereas in S1-BAV (n = 59) CAC changed substantially from 132 ± 19 to 156 ± 18° (mean Δ = 27 ± 21°, P < 0.001). Larger postoperative CAC angles were not linked to better mid-term valve performance, but Sievers' BAV type had a major effect on valve performance: mild AR in S1/i BAV progressed more often (76 vs 32% at 4 years, P = 0.017) and 1+ AR was more frequent (70 vs 36% at 4 years, P = 0.008) compared with SØ-BAV. Conclusions: BAV type, including number of raphes, sinuses and commissures (SØ superior to S1) but not commissure geometry within the neoroot alone, appears to be linked to functional outcomes after V-SARR for BAV.
MeSH term(s)	Adult ; Aorta/diagnostic imaging ; Aorta/physiopathology ; Aorta/surgery ; Aortic Valve/abnormalities ; Aortic Valve/physiopathology ; Aortic Valve/surgery ; Aortic Valve Insufficiency/etiology ; Bicuspid Aortic Valve Disease ; Blood Vessel Prosthesis Implantation/adverse effects ; Blood Vessel Prosthesis Implantation/methods ; Cardiac Surgical Procedures/adverse effects ; Cardiac Surgical Procedures/methods ; Echocardiography ; Female ; Heart Valve Diseases/diagnosis ; Heart Valve Diseases/physiopathology ; Heart Valve Diseases/surgery ; Humans ; Male ; Middle Aged ; Predictive Value of Tests ; Retrospective Studies ; Time Factors ; Tomography, X-Ray Computed ; Treatment Outcome ; Young Adult
Language	English
Publishing date	2014-06-05
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2095298-3
ISSN	1569-9285 ; 1569-9293
ISSN (online)	1569-9285
ISSN	1569-9293
DOI	10.1093/icvts/ivu123
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Article ; Online: Tirone David valve-sparing aortic root replacement and cusp repair for bicuspid aortic valve disease.

Kari, Fabian A / Liang, David H / Kvitting, John-Peder Escobar / Stephens, Elizabeth H / Mitchell, R Scott / Fischbein, Michael P / Miller, D Craig

The Journal of thoracic and cardiovascular surgery

2013 Volume 145, Issue 3 Suppl, Page(s) S35–40.e1–2

Abstract: ... with a BAV undergoing Tirone David reimplantation valve-sparing aortic root replacement.: Methods: Average ... David procedure and cusp repair in patients with a BAV, midterm clinical and valve function outcomes ...

Abstract	Objectives: The durability of valve-sparing aortic root replacement with or without cusp repair in patients with bicuspid aortic valve (BAV) disease is questioned. We analyzed the results of 75 patients with a BAV undergoing Tirone David reimplantation valve-sparing aortic root replacement. Methods: Average age was 45 ± 10 years; 80% were male; 31% had 2+ or greater aortic regurgitation (AR); annular diameter averaged 28 ± 3 mm; 32% had a Sievers' type 0 BAV, and 66% underwent concomitant cusp repair (usually cusp free margin shortening) to correct prolapse. Early (6 ± 3 days) and late (2.9 ± 1.7, 1-10 years) postoperative echocardiographic results were compared (cumulative echocardiographic follow-up, 190 patient-years; median late interval, 2 years [interquartile range, 0.68, 4.2]). Seven patients remained at risk beyond 6 years. Clinical outcome and valve function were analyzed using log-rank calculations. Results: Actuarial survival was 99% ± 2%; freedom from reoperation was 90% ± 5%, infection 98% ± 2%, and stroke 100% at 6 years. After initial improvement in degree of AR (P < .001), minor subclinical progression of AR was observed (P > .5); however, freedom from AR of more than 2+ was 100%. Cusp free margin shortening was not associated with valve deterioration, but commissural suspensory polytetrafluoroethylene neochord creation (n = 4) portended a higher probability of recurrent AR (P = .025). Conclusions: After David procedure and cusp repair in patients with a BAV, midterm clinical and valve function outcomes were favorable out to 6 years. More follow-up is required to determine long-term valve durability and the hazard of other clinically important late adverse events, including eventual reoperation, to beyond 10 years.
MeSH term(s)	Adult ; Aortic Valve/diagnostic imaging ; Aortic Valve/physiopathology ; Aortic Valve/surgery ; Aortic Valve Insufficiency/surgery ; Blood Vessel Prosthesis Implantation/adverse effects ; Blood Vessel Prosthesis Implantation/mortality ; Cardiac Valve Annuloplasty/adverse effects ; Cardiac Valve Annuloplasty/mortality ; Communicable Diseases/etiology ; Communicable Diseases/surgery ; Disease-Free Survival ; Female ; Heart Defects, Congenital/diagnostic imaging ; Heart Defects, Congenital/mortality ; Heart Defects, Congenital/physiopathology ; Heart Defects, Congenital/surgery ; Hemodynamics ; Humans ; Kaplan-Meier Estimate ; Male ; Middle Aged ; Recurrence ; Reoperation ; Replantation/adverse effects ; Replantation/mortality ; Retrospective Studies ; Risk Factors ; Stroke/etiology ; Stroke/surgery ; Time Factors ; Treatment Outcome ; Ultrasonography ; Young Adult
Language	English
Publishing date	2013-03
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	3104-5
ISSN	1097-685X ; 0022-5223
ISSN (online)	1097-685X
ISSN	0022-5223
DOI	10.1016/j.jtcvs.2012.11.043
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Article ; Online: David valve-sparing aortic root replacement: equivalent mid-term outcome for different valve types with or without connective tissue disorder.

Kvitting, John-Peder Escobar / Kari, Fabian A / Fischbein, Michael P / Liang, David H / Beraud, Anne-Sophie / Stephens, Elizabeth H / Mitchell, R Scott / Miller, D Craig

The Journal of thoracic and cardiovascular surgery

2012 Volume 145, Issue 1, Page(s) 117–26, 127.e1–5; discussion 126–7

Abstract: ... aortic valve, 40% Marfan syndrome) underwent Tirone David valve-sparing aortic root replacement. Follow-up ... dissection (freedom at 10 years, 90.4% ± 5.0%).: Conclusions: Tirone David reimplantation valve-sparing ...

Abstract	Objective: Although implicitly accepted by many that the durability of valve-sparing aortic root replacement in patients with bicuspid aortic valve disease and connective tissue disorders will be inferior, this hypothesis has not been rigorously investigated. Methods: From 1993 to 2009, 233 patients (27% bicuspid aortic valve, 40% Marfan syndrome) underwent Tirone David valve-sparing aortic root replacement. Follow-up averaged 4.7 ± 3.3 years (1102 patient-years). Freedom from adverse outcomes was determined using log-rank calculations. Results: Survival at 5 and 10 years was 98.7% ± 0.7% and 93.5% ± 5.1%, respectively. Freedom from reoperation (all causes) on the aortic root was 92.2% ± 3.6% at 10 years; 3 reoperations were aortic valve replacement owing to structural valve deterioration. Freedom from structural valve deterioration at 10 years was 96.1% ± 2.1%. No significant differences were found in survival (P = .805, P = .793, respectively), reoperation (P = .179, P = .973, respectively), structural valve deterioration (P = .639, P = .982, respectively), or any other functional or clinical endpoints when patients were stratified by valve type (tricuspid aortic valve vs bicuspid aortic valve) or associated connective tissue disorder. At the latest echocardiographic follow-up (95% complete), 202 patients (94.8%) had none or trace aortic regurgitation, 10 (4.7%) mild, 0 had moderate to severe, and 1 (0.5%) had severe aortic regurgitation. Freedom from greater than 2+ aortic regurgitation at 10 years was 95.3% ± 2.5%. Six patients sustained acute type B aortic dissection (freedom at 10 years, 90.4% ± 5.0%). Conclusions: Tirone David reimplantation valve-sparing aortic root replacement in carefully selected young patients was associated with excellent clinical and echocardiographic outcome in patients with either a tricuspid aortic valve or bicuspid aortic valve. No demonstrable adverse influence was found for Marfan syndrome or connective tissue disorder on durability, clinical outcome, or echocardiographic results.
MeSH term(s)	Adolescent ; Adult ; Aged ; Aorta/surgery ; Aortic Valve/abnormalities ; Aortic Valve/surgery ; Aortic Valve Insufficiency/etiology ; Aortic Valve Insufficiency/mortality ; Aortic Valve Insufficiency/surgery ; Blood Vessel Prosthesis Implantation/adverse effects ; Blood Vessel Prosthesis Implantation/mortality ; Cardiac Surgical Procedures/adverse effects ; Cardiac Surgical Procedures/mortality ; Chi-Square Distribution ; Child ; Female ; Heart Defects, Congenital/complications ; Heart Defects, Congenital/mortality ; Heart Defects, Congenital/surgery ; Hospital Mortality ; Humans ; Kaplan-Meier Estimate ; Male ; Marfan Syndrome/complications ; Marfan Syndrome/mortality ; Middle Aged ; Postoperative Complications/etiology ; Postoperative Complications/surgery ; Reoperation ; Replantation ; Retrospective Studies ; Risk Assessment ; Risk Factors ; Time Factors ; Treatment Outcome ; Young Adult
Language	English
Publishing date	2012-10-17
Publishing country	United States
Document type	Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	3104-5
ISSN	1097-685X ; 0022-5223
ISSN (online)	1097-685X
ISSN	0022-5223
DOI	10.1016/j.jtcvs.2012.09.013
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Article ; Online: The Making of an Economist, Redux, por David Colander

Yan Liang

Lecturas de Economía, Vol 71, Iss

2010 Volume 71

Abstract: ... Yan Liang. Traducción al español por Carlos Vasco y César Pallares, estudiantes de economía ...

Abstract	“The Making of An Economist, Redux”, The Journal of Socio-Economic doi:10.1016/j.socec.2008.11.002. Yan Liang. Traducción al español por Carlos Vasco y César Pallares, estudiantes de economía de la Universidad de Antioquia, Colombia
Keywords	Economic history and conditions ; HC10-1085 ; Economics as a science ; HB71-74
Language	English
Publishing date	2010-02-01T00:00:00Z
Publisher	Universidad de Antioquia
Document type	Article ; Online
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Article ; Online: The Making of an Economist, Redux, por David Colander

Yan Liang

Lecturas de Economía, Vol 71, Iss 71, Pp 263-

2009 Volume 268

Keywords	Economic history and conditions ; HC10-1085 ; Economics as a science ; HB71-74
Language	English
Publishing date	2009-12-01T00:00:00Z
Publisher	Universidad de Antioquia
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Reseña de "The Making of an Economist, Redux" de David Colander

Yan Liang

Lecturas de Economía, Iss 71, Pp 263-

2009 Volume 268

Keywords	Economic history and conditions ; HC10-1085 ; Economics as a science ; HB71-74
Language	English
Publishing date	2009-01-01T00:00:00Z
Publisher	Universidad de Antioquia
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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