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Shiroudi A, Śmiechowski M, Czub J, Abdel-Rahman MA. Computational analysis of substituent effects on proton affinity and gas-phase basicity of TEMPO derivatives and their hydrogen bonding interactions with water molecules. Sci Rep 2024; 14:8434. [PMID: 38600208 PMCID: PMC11006853 DOI: 10.1038/s41598-024-58582-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 04/01/2024] [Indexed: 04/12/2024] Open
Abstract
The study investigates the molecular structure of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) and its derivatives in the gas phase using B3LYP and M06-2X functional methods. Intermolecular interactions are analyzed using natural bond orbital (NBO) and atoms in molecules (AIM) techniques. NO2-substituted TEMPO displays high reactivity, less stability, and softer properties. The study reveals that the stability of TEMPO derivatives is mainly influenced by LP(e) → σ∗ electronic delocalization effects, with the highest stabilization observed on the oxygen atom of the nitroxide moiety. This work also considers electron density, atomic charges, and energetic and thermodynamic properties of the studied NO radicals, and their relative stability. The proton affinity and gas-phase basicity of the studied compounds were computed at T = 298 K for O-protonation and N-protonation, respectively. The studied DFT method calculations show that O-protonation is more stable than N-protonation, with an energy difference of 16.64-20.77 kcal/mol (22.80-25.68 kcal/mol) at the B3LYP (M06-2X) method. The AIM analysis reveals that the N-O…H interaction in H2O complexes has the most favorable hydrogen bond energy computed at bond critical points (3, - 1), and the planar configurations of TEMPO derivatives exhibit the highest EHB values. This indicates stronger hydrogen bonding interactions between the N-O group and water molecules.
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Affiliation(s)
- Abolfazl Shiroudi
- Department of Physical Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland.
- BioTechMed Center, Gdańsk University of Technology, 80-233, Gdańsk, Poland.
| | - Maciej Śmiechowski
- Department of Physical Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - Jacek Czub
- Department of Physical Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
- BioTechMed Center, Gdańsk University of Technology, 80-233, Gdańsk, Poland
| | - Mohamed A Abdel-Rahman
- Department of Chemistry, Faculty of Science, Suez University, P.O. Box: 43221, Suez, Egypt.
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Rimmer MP, Howie RA, Anderson RA, Barratt CLR, Barnhart KT, Beebeejaun Y, Bertolla RP, Bhattacharya S, Björndahl L, Bortoletto P, Brannigan RE, Cantineau AEP, Caroppo E, Collura BL, Coward K, Eisenberg ML, De Geyter C, Goulis DG, Henkel RR, Ho VNA, Hussein AF, Huyser C, Kadijk JH, Kamath MS, Khashaba S, Kobori Y, Kopeika J, Kucuk T, Luján S, Matsaseng TC, Mathur RS, McEleny K, Mitchell RT, Mol BW, Murage AM, Ng EHY, Pacey A, Perheentupa AH, Du Plessis S, Rives N, Sarris I, Schlegel PN, Shabbir M, Śmiechowski M, Subramanian V, Sunkara SK, Tarlarzis BC, Tüttelmann F, Vail A, van Wely M, Vazquez-Levin MH, Vuong LN, Wang AY, Wang R, Zini A, Farquhar CM, Niederberger C, Duffy JMN. Protocol for developing a core outcome set for male infertility research: an international consensus development study. Hum Reprod Open 2022; 2022:hoac014. [PMID: 35402735 PMCID: PMC8990106 DOI: 10.1093/hropen/hoac014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 03/08/2022] [Indexed: 11/27/2022] Open
Abstract
STUDY QUESTION We aim to develop, disseminate and implement a minimum data set, known as a core outcome set, for future male infertility research. WHAT IS KNOWN ALREADY Research into male infertility can be challenging to design, conduct and report. Evidence from randomized trials can be difficult to interpret and of limited ability to inform clinical practice for numerous reasons. These may include complex issues, such as variation in outcome measures and outcome reporting bias, as well as failure to consider the perspectives of men and their partners with lived experience of fertility problems. Previously, the Core Outcome Measure for Infertility Trials (COMMIT) initiative, an international consortium of researchers, healthcare professionals and people with fertility problems, has developed a core outcome set for general infertility research. Now, a bespoke core outcome set for male infertility is required to address the unique challenges pertinent to male infertility research. STUDY DESIGN SIZE DURATION Stakeholders, including healthcare professionals, allied healthcare professionals, scientists, researchers and people with fertility problems, will be invited to participate. Formal consensus science methods will be used, including the modified Delphi method, modified Nominal Group Technique and the National Institutes of Health's consensus development conference. PARTICIPANTS/MATERIALS SETTING METHODS An international steering group, including the relevant stakeholders outlined above, has been established to guide the development of this core outcome set. Possible core outcomes will be identified by undertaking a systematic review of randomized controlled trials evaluating potential treatments for male factor infertility. These outcomes will be entered into a modified Delphi method. Repeated reflection and re-scoring should promote convergence towards consensus outcomes, which will be prioritized during a consensus development meeting to identify a final core outcome set. We will establish standardized definitions and recommend high-quality measurement instruments for individual core outcomes. STUDY FUNDING/COMPETING INTERESTS This work has been supported by the Urology Foundation small project award, 2021. C.L.R.B. is the recipient of a BMGF grant and received consultancy fees from Exscentia and Exceed sperm testing, paid to the University of Dundee and speaking fees or honoraria paid personally by Ferring, Copper Surgical and RBMO. S.B. received royalties from Cambridge University Press, Speaker honoraria for Obstetrical and Gynaecological Society of Singapore, Merk SMART Masterclass and Merk FERRING Forum, paid to the University of Aberdeen. Payment for leadership roles within NHS Grampian, previously paid to self, now paid to University of Aberdeen. An Honorarium is received as Editor in Chief of Human Reproduction Open. M.L.E. is an advisor to the companies Hannah and Ro. B.W.M. received an investigator grant from the NHMRC, No: GNT1176437 is a paid consultant for ObsEva and has received research funding from Ferring and Merck. R.R.H. received royalties from Elsevier for a book, consultancy fees from Glyciome, and presentation fees from GryNumber Health and Aytu Bioscience. Aytu Bioscience also funded MiOXYS systems and sensors. Attendance at Fertility 2020 and Roadshow South Africa by Ralf Henkel was funded by LogixX Pharma Ltd. R.R.H. is also Editor in Chief of Andrologia and has been an employee of LogixX Pharma Ltd. since 2020. M.S.K. is an associate editor with Human Reproduction Open. K.Mc.E. received an honoraria for lectures from Bayer and Pharmasure in 2019 and payment for an ESHRE grant review in 2019. His attendance at ESHRE 2019 and AUA 2019 was sponsored by Pharmasure and Bayer, respectively. The remaining authors declare no competing interests. TRIAL REGISTRATION NUMBER Core Outcome Measures in Effectiveness Trials (COMET) initiative registration No: 1586. Available at www.comet-initiative.org/Studies/Details/1586. TRIAL REGISTRATION DATE N/A. DATE OF FIRST PATIENT’S ENROLMENT N/A.
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Affiliation(s)
- Michael P Rimmer
- MRC Centre for Reproductive Health, Queens Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Ruth A Howie
- Edinburgh Fertility Centre, Simpsons Centre for Reproductive Health, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - Richard A Anderson
- MRC Centre for Reproductive Health, Queens Medical Research Institute, University of Edinburgh, Edinburgh, UK,Edinburgh Fertility Centre, Simpsons Centre for Reproductive Health, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - Christopher L R Barratt
- Reproductive Medicine Research Group, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | - Kurt T Barnhart
- Department of Obstetrics and Gynaecology, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Yusuf Beebeejaun
- King’s Fertility, The Fetal Medicine Research Unit, King’s College London, London, UK
| | - Ricardo Pimenta Bertolla
- Division of Urology, Department of Surgery, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
| | | | - Lars Björndahl
- ANOVA—Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
| | - Pietro Bortoletto
- The Ronald O. Perelman and Claudia Cohen Centre for Reproductive Medicine, Weill Cornell Medicine, New York, NY, USA
| | | | - Astrid E P Cantineau
- University of Groningen, University Medical Centre, Groningen, Centre of Reproductive Medicine, Groningen, Netherlands
| | - Ettore Caroppo
- Asl Bari, Reproductive Unit and Andrology Clinic, Conversano (Ba), Italy
| | | | - Kevin Coward
- Nuffield Department of Women’s and Reproductive Health, University of Oxford, Oxford, UK,Women’s Centre, John Radcliffe Hospital, Headington, Oxford, UK
| | | | - Christian De Geyter
- Reproductive Medicine and Gynaecological Endocrinology (RME), University Hospital, University of Basel, Basel, Switzerland
| | - Dimitrios G Goulis
- Units of Human Reproduction and Reproductive Endocrinology, 1st Department of Obstetrics and Gynaecology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ralf R Henkel
- Department of Digestion, Metabolism and Reproduction, Imperial College London, London, UK
| | - Vu N A Ho
- IVFMD, My Duc Hospital, HOPE Research Centre, My Duc Hospital, Ho Chi Minh City, Vietnam
| | | | - Carin Huyser
- Reproductive Biology Laboratory, Department of Obstetrics and Gynaecology, University of Pretoria, Steve Biko Academic Hospital, Pretoria, South Africa
| | - Jozef H Kadijk
- Freya—Dutch Patient Association for Infertility, Gorinchem, The Netherlands
| | | | - Shadi Khashaba
- University of New South Wales, Sydney, Australia,IVF Australia, Sydney, Australia
| | | | | | | | - Saturnino Luján
- Urology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Thabo Christopher Matsaseng
- Stellenbosch University, Stellenbosch, Western Cape, South Africa,Tygerberg Academic Hospital, Cape Town, South Africa
| | - Raj S Mathur
- Manchester University Foundation Trust, Manchester Academic Health Sciences Centre, Manchester, UK
| | - Kevin McEleny
- Newcastle Fertility, The Newcastle upon Tyne Hospitals NHS Trust, Newcastle upon Tyne, UK
| | - Rod T Mitchell
- MRC Centre for Reproductive Health, Queens Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Ben W Mol
- University of Aberdeen, Aberdeen, UK,Department of Obstetrics and Gynaecology, Monash University, Clayton, Australia
| | | | - Ernest H Y Ng
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Allan Pacey
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK
| | - Antti H Perheentupa
- Department of Obstetrics and Gynaecology, University of Turku and Turku University Hospital, Turku, Finland
| | - Stefan Du Plessis
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, UAE,Medical Physiology, Stellenbosch University, Tygerberg, South Africa
| | - Nathalie Rives
- Rouen University Hospital, Biology of Reproduction-CECOS Laboratory, Rouen, France
| | - Ippokratis Sarris
- King’s Fertility, The Fetal Medicine Research Unit, King’s College London, London, UK,Faculty of Life Sciences and Medicine, King’s College London, London, UK
| | - Peter N Schlegel
- The Ronald O. Perelman and Claudia Cohen Centre for Reproductive Medicine, Weill Cornell Medicine, New York, NY, USA
| | | | - Maciej Śmiechowski
- Association for Infertility Treatment and Adoption Support “Our Stork”, Warsaw, Poland
| | - Venkatesh Subramanian
- King’s Fertility, The Fetal Medicine Research Unit, King’s College London, London, UK
| | - Sesh K Sunkara
- Faculty of Life Sciences and Medicine, King’s College London, London, UK
| | - Basil C Tarlarzis
- Units of Human Reproduction and Reproductive Endocrinology, 1st Department of Obstetrics and Gynaecology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Frank Tüttelmann
- Institute of Reproductive Genetics, University of Münster, Münster, Germany
| | - Andy Vail
- Centre for Biostatistics, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Madelon van Wely
- Netherlands Satellite of the Cochrane Gynaecology and Fertility Group, Centre for Reproductive Medicine, Amsterdam, Netherlands,Reproduction & Development Research Institute, Amsterdam University Medical Centre, Amsterdam, Netherlands
| | - Mónica H Vazquez-Levin
- Laboratorio de Estudios de Interacción Celular en Reproducción y Cáncer, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina (CONICET), Fundación IBYME (FIBYME), Buenos Aires, Argentina
| | - Lan N Vuong
- Department of Obstetrics and Gynaecology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam,HOPE Research Centre, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Alex Y Wang
- Faculty of Health, University of Technology Sydney, Ultimo, Australia
| | - Rui Wang
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
| | - Armand Zini
- Division of Urology, Department of Surgery, McGill University, Montreal, Quebec, Canada
| | - Cindy M Farquhar
- Cochrane Gynaecology and Fertility Group, University of Auckland, Auckland, New Zealand,Department of Obstetrics and Gynaecology, University of Auckland, Auckland, New Zealand
| | - Craig Niederberger
- Correspondence address. Department of Urology, University of Illinois at Chicago, Chicago, IL, USA and Department of Bioengineering, University of Illinois at Chicago College of Engineering, Chicago, IL, USA. E-mail:
| | - James M N Duffy
- King’s Fertility, The Fetal Medicine Research Unit, King’s College London, London, UK
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