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Jung S, Prelip M, Roper-Fingerhut H, Kuo T, Simon P, Whaley SE, Wang MC. Examination of community-level interventions addressing early childhood obesity in Los Angeles County. Prev Med Rep 2024; 41:102708. [PMID: 38595730 PMCID: PMC11002848 DOI: 10.1016/j.pmedr.2024.102708] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 03/25/2024] [Accepted: 03/26/2024] [Indexed: 04/11/2024] Open
Abstract
Objective To help inform decisions regarding the equitable implementation of obesity interventions, we examined whether interventions were equitably reaching the most vulnerable communities, identified communities that received fewer interventions than expected, and estimated the effect of 'dose' of interventions on obesity prevalence. Methods We created a database to identify and characterize obesity-related interventions implemented in Los Angeles County from 2005 to 2015 linked to community-level sociodemographic and obesity prevalence data. We ran generalized linear models with a Gamma distribution and log link to determine if interventions were directed toward vulnerable communities and to identify communities that received fewer interventions than expected. We ran fixed-effects models to estimate the association between obesity prevalence and intervention strategy count among preschool-aged children enrolled in the Special Supplemental Nutrition Assistance Program for Women Infants and Children. Results We found that interventions targeted vulnerable communities with high poverty rates and percentages of minority residents. The small cluster of communities that received fewer interventions than expected tended to have poor socioeconomic profiles. Communities which received more intervention strategies saw greater declines in obesity prevalence (β = -0.023; 95 % CI: -0.031, -0.016). Conclusions It is important to determine if interventions are equitably reaching vulnerable populations as resources to tackle childhood obesity become available. Evaluating the population impact of multiple interventions implemented simultaneously presents methodological challenges in measuring intervention dose and identifying cost-effective strategies. Addressing these challenges must be an important research priority as community-wide interventions involve multiple intervention strategies to reduce health disparities.
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Affiliation(s)
- Shelley Jung
- Department of Community Health Sciences, UCLA Fielding School of Public Health, Box 951772, Suite 16-035 CHS, Los Angeles, CA 90095, USA
| | - Michael Prelip
- Department of Community Health Sciences, UCLA Fielding School of Public Health, Box 951772, Suite 16-035 CHS, Los Angeles, CA 90095, USA
| | - Hayley Roper-Fingerhut
- PHFE WIC, a program of Heluna Health, 13181 Crossroads Parkway North, Suite 540, City of Industry, CA 91746, USA
| | - Tony Kuo
- Division of Chronic Disease and Injury Prevention, Los Angeles County Department of Public Health, 3530 Wilshire Blvd, 8th Fl, Los Angeles, CA 90010, USA
- Department of Epidemiology, UCLA Fielding School of Public Health, Box 951772, Suite 71-254 CHS, Los Angeles, CA 90095, USA
- Department of Family Medicine, UCLA David Geffen School of Medicine, 10833 Le Conte Avenue, 50-074 CHS, Los Angeles, CA 90095, USA
- Population Health Program, UCLA Clinical and Translational Science Institute, 10833 Le Conte Avenue, BE-144 Center of Health Sciences, Los Angeles, CA 90095, USA
| | - Paul Simon
- Department of Epidemiology, UCLA Fielding School of Public Health, Box 951772, Suite 71-254 CHS, Los Angeles, CA 90095, USA
- Los Angeles County Department of Public Health, 313 N Figueroa St, Suite 127, Los Angeles, CA 90012, USA
| | - Shannon E. Whaley
- PHFE WIC, a program of Heluna Health, 13181 Crossroads Parkway North, Suite 540, City of Industry, CA 91746, USA
| | - May C. Wang
- Department of Community Health Sciences, UCLA Fielding School of Public Health, Box 951772, Suite 16-035 CHS, Los Angeles, CA 90095, USA
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Sander J, Simon P, Hinske C. [Big data and artificial intelligence in anesthesia : Reality or fiction?]. Anaesthesiologie 2024; 73:77-84. [PMID: 38066215 DOI: 10.1007/s00101-023-01362-5] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/28/2023] [Indexed: 02/08/2024]
Abstract
Big data and artificial intelligence are buzzwords that everyone is talking about and yet always provide a touch of science fiction to the scenery. What is the status of these topics in anesthesia? Are the first robots already rolling through the corridors while doctors are getting bored as all the work has been done? Spoiler alert! We are still far away from achieving this. Initially, paper charts and analogue notes stand in the way of comprehensive digitization. Source systems need to be merged and data standardized, harmonized and validated. Therefore, the friendly android that is rolling towards us, waving and holding a freshly brewed cup of coffee in our thoughts will have to wait; however, a glimpse of the future is already evident in some clinics and the first promising developments are already showing what could be the standard tomorrow. Learning algorithms calculate the length of stay individually for each patient in the intensive care unit (ICU), reducing negative consequences such as readmission and mortality. The field of ultrasound technology for regional anesthesia and closed-loop anesthesia systems is also demonstrating the benefits of artificial intelligence (AI)-assisted technologies in practice. The efforts are diverse and ambitious but they repeatedly collide with privacy challenges and significant capital expenditure, which weigh heavily on an already financially strained healthcare system; however, anyone who listens carefully to the medical staff knows that robots are not what they would expect and the buzzwords big data and artificial intelligence might be less science fiction than initially assumed.
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Affiliation(s)
- J Sander
- Institut für Digitale Medizin (IDM), Universitätsklinikum Augsburg, Gutenbergstr. 7, 86356, Neusäß, Deutschland.
| | - P Simon
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Augsburg, Augsburg, Deutschland
| | - C Hinske
- Institut für Digitale Medizin (IDM), Universitätsklinikum Augsburg, Gutenbergstr. 7, 86356, Neusäß, Deutschland
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Werner P, Winter M, Müller M, Zierfuss B, Coti L, Mach M, Scherzer S, Simon P, Laufer G, Willfort‐Ehringer A, Andreas M. Femoral vessel complications after transfemoral TAVR-A contemporary sonography-based assessment of 480 patients with third-generation transcatheter valves. Clin Cardiol 2024; 47:e24197. [PMID: 38069663 PMCID: PMC10823444 DOI: 10.1002/clc.24197] [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] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 10/24/2023] [Accepted: 11/15/2023] [Indexed: 02/01/2024] Open
Abstract
BACKGROUND Postinterventional sonographic assessment of the femoral artery after transfemoral transcatheter aortic valve replacement (TF-TAVR) has the potential to identify several pathologies. We investigated the incidence and risk factors of femoral vessel complications in a modern TAVR collective using postinterventional sonography. METHODS Between September 2017 and March 2022, 480 patients underwent TF-TAVR with postinterventional femoral sonography at a single center. Clinical outcomes and adverse events were analyzed after the Valve Academic Research Consortium 3 (VARC-3) criteria. RESULTS In this cohort (51.2% male; age 80 ± 7.5 years, median EuroSCORE II 3.7) 74.8% (n = 359) were implanted with a self-expandable and 25.2% (n = 121) with a balloon-expandable valve. The main access (valve-delivery) was located right in 91.4% (n = 438), and the primary closure system was Proglide in 95% (n = 456). Vascular complications (VC) were observed in 29.16% (n = 140) of patients; 23.3% (n = 112) presented with minor- and 5.8% (n = 28) with major VC. Postinterventional femoral artery stenosis on the main access was observed in 9.8% (n = 47). Multivariable logistic regression analysis revealed female sex (p = .03, odds ratio [OR] 2.32, 95% confidence interval [CI] 1.09-4.89) and the number of used endovascular closure devices (p = .014, OR 0.11, 95%CI 0.02-0.64) as predictive factors for femoral artery stenosis. CONCLUSIONS The incidence of postinterventional femoral artery stenosis following TF-TAVR was higher than expected with a number of used closure devices and female sex being independent risk factors. Considering the continuous advance of TAVR in low-risk patients with preserved physical activity, emphasis should be directed at the correct diagnosis and follow-up of these complications.
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Affiliation(s)
- Paul Werner
- Department of Cardiac SurgeryMedical University of ViennaViennaAustria
| | - Martin Winter
- Department of Cardiac SurgeryMedical University of ViennaViennaAustria
| | - Markus Müller
- Division of Angiology, Department of Internal Medicine IIMedical University of ViennaViennaAustria
| | - Bernhard Zierfuss
- Division of Angiology, Department of Internal Medicine IIMedical University of ViennaViennaAustria
| | - luliana Coti
- Department of Cardiac SurgeryMedical University of ViennaViennaAustria
| | - Markus Mach
- Department of Cardiac SurgeryMedical University of ViennaViennaAustria
| | - Sabine Scherzer
- Department of Cardiac SurgeryMedical University of ViennaViennaAustria
| | - Paul Simon
- Department of Cardiac SurgeryMedical University of ViennaViennaAustria
| | - Günther Laufer
- Department of Cardiac SurgeryMedical University of ViennaViennaAustria
| | | | - Martin Andreas
- Department of Cardiac SurgeryMedical University of ViennaViennaAustria
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4
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Kubiak A, Pajewska-Szmyt M, Kotula M, Leśniewski B, Voronkina A, Rahimi P, Falahi S, Heimler K, Rogoll A, Vogt C, Ereskovsky A, Simon P, Langer E, Springer A, Förste M, Charitos A, Joseph Y, Jesionowski T, Ehrlich H. Spongin as a Unique 3D Template for the Development of Functional Iron-Based Composites Using Biomimetic Approach In Vitro. Mar Drugs 2023; 21:460. [PMID: 37755073 PMCID: PMC10532518 DOI: 10.3390/md21090460] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/20/2023] [Accepted: 08/21/2023] [Indexed: 09/28/2023] Open
Abstract
Marine sponges of the subclass Keratosa originated on our planet about 900 million years ago and represent evolutionarily ancient and hierarchically structured biological materials. One of them, proteinaceous spongin, is responsible for the formation of 3D structured fibrous skeletons and remains enigmatic with complex chemistry. The objective of this study was to investigate the interaction of spongin with iron ions in a marine environment due to biocorrosion, leading to the occurrence of lepidocrocite. For this purpose, a biomimetic approach for the development of a new lepidocrocite-containing 3D spongin scaffold under laboratory conditions at 24 °C using artificial seawater and iron is described for the first time. This method helps to obtain a new composite as "Iron-Spongin", which was characterized by infrared spectroscopy and thermogravimetry. Furthermore, sophisticated techniques such as X-ray fluorescence, microscope technique, and X-Ray diffraction were used to determine the structure. This research proposed a corresponding mechanism of lepidocrocite formation, which may be connected with the spongin amino acids functional groups. Moreover, the potential application of the biocomposite as an electrochemical dopamine sensor is proposed. The conducted research not only shows the mechanism or sensor properties of "Iron-spongin" but also opens the door to other applications of these multifunctional materials.
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Affiliation(s)
- Anita Kubiak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland; (M.K.); (B.L.)
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland;
| | - Martyna Pajewska-Szmyt
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland;
| | - Martyna Kotula
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland; (M.K.); (B.L.)
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland;
| | - Bartosz Leśniewski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland; (M.K.); (B.L.)
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland;
| | - Alona Voronkina
- Institute of Electronic and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
- Department of Pharmacy, National Pirogov Memorial Medical University, Vinnytsya, Pyrogov Street. 56, 21018 Vinnytsia, Ukraine
| | - Parvaneh Rahimi
- Institute of Electronic and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
| | - Sedigheh Falahi
- Institute of Electronic and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
| | - Korbinian Heimler
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany; (K.H.); (A.R.); (C.V.)
| | - Anika Rogoll
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany; (K.H.); (A.R.); (C.V.)
| | - Carla Vogt
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany; (K.H.); (A.R.); (C.V.)
| | - Alexander Ereskovsky
- IMBE, CNRS, IRD, Aix Marseille University, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France;
| | - Paul Simon
- Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40, 01187 Dresden, Germany;
| | - Enrico Langer
- Institute of Semiconductors and Microsystems, TU Dresden, Nöthnitzer Str. 64, 01187 Dresden, Germany;
| | - Armin Springer
- Department Life, Light & Matter, University of Rostock, Albert-Einstein-Str. 25, 18059 Rostock, Germany;
- Medical Biology and Electron Microscopy Centre, Rostock University Medical Center, Strempelstr. 14, 18057 Rostock, Germany
| | - Maik Förste
- Institute for Nonferrous Metallurgy and Purest Materials (INEMET), TU Bergakademie Freiberg, Leipziger Str. 34, D-09599 Freiberg, Germany; (M.F.); (A.C.)
| | - Alexandros Charitos
- Institute for Nonferrous Metallurgy and Purest Materials (INEMET), TU Bergakademie Freiberg, Leipziger Str. 34, D-09599 Freiberg, Germany; (M.F.); (A.C.)
| | - Yvonne Joseph
- Institute of Electronic and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
| | - Teofil Jesionowski
- Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland;
| | - Hermann Ehrlich
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland;
- Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland;
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Collignon C, Domenech C, Ducassou S, Pluchart C, Bruno B, Pasquet M, Simon P, Petit A, Rialland-Battisti F, Brethon B. Temporary contraindication to chemotherapy due to toxicity: blinatumomab's effectiveness in paediatric patients with B‐acute lymphoblastic leukaemia. Br J Haematol 2023; 201:e42-e45. [PMID: 36971071 DOI: 10.1111/bjh.18759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/06/2023] [Accepted: 03/07/2023] [Indexed: 03/29/2023]
Affiliation(s)
- C Collignon
- Pediatric Intensive Care Unit, APHP University Hospital Necker-Enfants Malades, Paris, France
| | - C Domenech
- Institute of Pediatric Hematology and Oncology, Hospices Civils de Lyon, Université Lyon 1, Lyon, France
| | - S Ducassou
- Pediatrics Oncology Department, Children's Hospital of Bordeaux University Hospital, Bordeaux, France
| | - C Pluchart
- Pediatric Hematology-Oncology Unit, CHU Reims, Reims, France
| | - B Bruno
- Pediatric Hematology Unit, CHU Lille, Lille, France
| | - M Pasquet
- Pediatric Hematology-Oncology Unit, CHU Toulouse, Toulouse, France
| | - P Simon
- Pediatric Hematology-Oncology Unit, CHU Besançon, Besançon, France
| | - A Petit
- Sorbonne Université, Hôpital Armand Trousseau, AP-HP, Paris, France
| | | | - B Brethon
- Hematology and Immunology Pediatric Unit, Robert Debré Hospital, Paris, France
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Schlein J, Kaider A, Gabriel H, Wiedemann D, Hornykewycz S, Simon P, Base E, Michel-Behnke I, Laufer G, Zimpfer D. Aortic Valve Repair in Pediatric Patients: 30 Years Single Center Experience. Ann Thorac Surg 2023; 115:656-662. [PMID: 35779601 DOI: 10.1016/j.athoracsur.2022.05.061] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 04/18/2022] [Accepted: 05/25/2022] [Indexed: 11/01/2022]
Abstract
BACKGROUND Valve repair is the procedure of choice for congenital aortic valve disease. With increasing experience, the surgical armamentarium broadened from simple commissurotomy to more complex techniques. We report our 30-year experience with pediatric aortic valve repair. METHODS A retrospective chart review of all patients aged less than 18 years who underwent aortic valve repair from May 1985 to April 2020 was conducted. Mortality was cross-checked with the national health insurance database (96% complete mortality follow-up in April 2020). Primary study endpoints were survival and incidence of reoperations. RESULTS From May 1985 until April 2020, 126 patients underwent aortic valve repair at a median age of 1.8 years (interquartile range, 0.2-10). Early mortality was 5.6% (7 of 126). All early deaths occurred in neonates with critical aortic stenosis undergoing commissurotomy. No early deaths were observed after 2002. Kaplan-Meier estimated survival was 90.8% (95% CI, 84.0-94.8) at 10 years, 86.9% (95% CI, 78.7-92.2) at 20 years, and 83.5% (95% CI, 71.7-90.6) at 30 years. The cumulative incidence of aortic valve replacement was 37% (95% CI, 27.7-46.3) at 10 years, 62.2% (95% CI, 50.1-72.1) at 20 years, and 67.4% (51.2-79.2) at 30 years. Nine patients had undergone re-repair of the aortic valve. The majority of valve replacements were Ross procedures. CONCLUSIONS Our results support a repair-first strategy for patients with congenital heart disease and underline that aortic valve reconstruction can be a successful long-term solution. Longevity did not differ between aortic valve commissurotomy and complex aortic valve reconstruction.
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Affiliation(s)
- Johanna Schlein
- Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Alexandra Kaider
- Center for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Harald Gabriel
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - Dominik Wiedemann
- Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Stephan Hornykewycz
- Division of Cardiac Thoracic Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, Intensive Care Medicine, and Pain Medicine, Medical University of Vienna, Vienna, Austria
| | - Paul Simon
- Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Eva Base
- Division of Cardiac Thoracic Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, Intensive Care Medicine, and Pain Medicine, Medical University of Vienna, Vienna, Austria
| | - Ina Michel-Behnke
- Division of Pediatric Cardiology, Department of Children and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
| | - Günther Laufer
- Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Daniel Zimpfer
- Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria.
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Pernet O, Balog S, Kawaguchi ES, Lam CN, Anthony P, Simon P, Kotha R, Sood N, Hu H, Kovacs A. Quantification of Severe Acute Respiratory Syndrome Coronavirus 2 Binding Antibody Levels To Assess Infection and Vaccine-Induced Immunity Using WHO Standards. Microbiol Spectr 2023; 11:e0370922. [PMID: 36688648 PMCID: PMC9927585 DOI: 10.1128/spectrum.03709-22] [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] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 12/19/2022] [Indexed: 01/24/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) binding antibody (Ab) levels following vaccination or natural infection could be used as a surrogate for immune protection if results of serological assays were standardized to yield quantitative results using an international standard. Using a bead-based serological assay (Luminex xMAP), anti-receptor binding domain (anti-RBD) Ab levels were determined for 1,450 participants enrolled in the Los Angeles Pandemic Surveillance Cohort (LAPSC) study. For 123 participants, SARS-CoV-2 binding antibody unit (BAU) levels were also quantified using WHO standards and then compared to the semiquantitative results. Samples were chosen to represent the range of results and time from vaccination. Antibody levels and decay rates were then compared using unadjusted and adjusted linear regression models. The linear range of the assay used in this study was determined to be 300 to 5,000 mean fluorescence intensity units (MFI). Among the fully vaccinated groups (vaccinated only and vaccinated with past infection), 84.8% had anti-RBD MFI values above the linear range of >5,000 MFI, and 33.8% had values of >15,000 MFI. Among vaccinated participants with past infection (hybrid immunity), 97% had anti-RBD values of >5,000 MFI and 70% (120/171) had anti-RBD values of >15,000 MFI. In the subgroup quantified using the WHO control, BAU levels were significantly higher than the semiquantitative MFI results. In vaccinated participants, Ab decay levels were similar between infected and noninfected groups (P = 0.337). These results demonstrate that accurate quantitation is possible if standardized with an international standard. BAU can then be compared over time or between subjects and would be useful in clinical decision making. IMPORTANCE Accurate quantification of SARS-CoV-2-specific antibodies can be achieved using a universal standard with sample dilution within the linear range. With hybrid immunity being now common, it is critical to use protocols adapted to high Ab levels to standardize serological results. We validated this approach with the Los Angeles Pandemic Surveillance Cohort by comparing the antibody decay rates in vaccinated participants and vaccinated infected participants.
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Affiliation(s)
- Olivier Pernet
- Department of Pediatrics, Maternal, Child and Adolescent Center for Infectious Diseases and Virology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Steven Balog
- Department of Pediatrics, Maternal, Child and Adolescent Center for Infectious Diseases and Virology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Eric S. Kawaguchi
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California, USA
| | - Chun Nok Lam
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California, USA
| | - Patricia Anthony
- Department of Pediatrics, Maternal, Child and Adolescent Center for Infectious Diseases and Virology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Paul Simon
- Los Angeles County Department of Public Health, Los Angeles, California, USA
| | - Rani Kotha
- Schaeffer Center for Health Policy & Economics, University of Southern California, Los Angeles, California, USA
| | - Neeraj Sood
- Sol Price School of Public Policy, University of Southern California, Los Angeles, California, USA
| | - Howard Hu
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California, USA
| | - Andrea Kovacs
- Department of Pediatrics, Maternal, Child and Adolescent Center for Infectious Diseases and Virology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California, USA
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Bahr K, Simon P, Schattenberg J, Gouveris H. The Snoring Index as an indicator for non-alcoholic fatty liver disease in patients with sleep apnoea syndrome. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.769] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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9
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Navarrete F, Anderson AR, Burgess KR, Reed M, Simon P, Ghayda RA. VALIDATION OF SPERM CHROMATIN DISPERSION (SCD) TEST USING A MAIL-IN, AT-HOME SEMEN COLLECTION KIT. Fertil Steril 2022. [DOI: 10.1016/j.fertnstert.2022.08.796] [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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10
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Pochert J, Simon P. [79/f-Condition after high-grade aortic valve stenosis and implantation of a transcatheter aortic valve with subsequent bradycardia down to 28/min : Preparation course anesthesiological intensive care medicine: case 26]. Anaesthesiologie 2022; 71:136-139. [PMID: 35925187 DOI: 10.1007/s00101-022-01168-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Affiliation(s)
- J Pochert
- Klinik für Anästhesiologie und operative Intensivmedizin, Universitätsklinikum Augsburg, Stenglinstr. 2, 86156, Augsburg, Deutschland.
| | - P Simon
- Klinik für Anästhesiologie und operative Intensivmedizin, Universitätsklinikum Augsburg, Stenglinstr. 2, 86156, Augsburg, Deutschland
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Fastrez M, Simon P, Dechene J, Van Den Abbeel E, Delbaere A, Demeestere I. P-455 Laparoscopic robot-assisted autologous transplantation of cryopreserved ovarian tissue: report of an operative technique and reproductive outcomes in a case series. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Is laparoscopic robot-assisted autologous transplantation of ovarian tissue feasible and is the reproductive outcome adequate in comparison with published data?
Summary answer
Laparoscopic robot-assisted autologous transplantation of ovarian tissue is feasible and safe. The reproductive outcome in our series is comparable with published data.
What is known already
Autologous cryopreserved ovarian tissue transplantation (ACOTT) is recognized as a valid fertility preservation technique among young patients facing iatrogenic premature ovarian failure (IOP). Orthotopic transplantation consists in the reimplantation of ovarian tissue back to the medulla of the ovary or into a specially created peritoneal pouch. It has been described by laparoscopy or mini laparotomy. It is the most efficient technique to restore endocrine function and fertility. Conception and live birth rates have been reported to be respectively 38% and 26%. The robot-assisted laparoscopic approach was recently described in a 7-case series.
Study design, size, duration
We prospectively registered all ACOTT procedures performed in our department between November 2004 and January 2022.
Participants/materials, setting, methods
We analyzed the data of 29 ACOTT procedures performed among 22 patients. The indication for ovarian cryopreservation, the time to restore and duration of endocrine function (regular menstrual cycles), time to first pregnancy and number of pregnancies/live births have been prospectively collected. The operative technique (laparoscopic/robot), duration of surgical procedure, hospital stay, intra and post-operative complications have been retrospectively extracted from the patients’ files.
Main results and the role of chance
We included 22 patients: 8 with a malignant hematologic disease, 7 with a breast cancer, 3 with a benign disease, 2 with a pelvic malignancy and 2 with a sarcoma. Their median age at ovarian tissue cryopreservation was 28.5 (11 – 35) years. Their median age at first ACOTT was 36.5 (23 – 42) years. The median time between cryopreservation and ACOTT was 6.75 (2 – 21) years. Seven out of 22 patients had a second ACOTT. Twenty-nine procedures of orthotopic reimplantation were performed. A concomitant heterotopic (sub cutaneous) transplantation was performed among six out of the 29 procedures, at the beginning of our experience. All 29 orthotopic reimplantation were performed laparoscopically, 19 out of them with robot assistance. The median operating time was 102 (43 – 149) minutes and was shorter for laparoscopy (62 minutes) than for robot assisted laparoscopy (106 minutes). We encountered no complication, and the median hospital stay was 1 (1 – 2) day. The median time to restore endocrine function was 4 (1 – 6) months. Eighteen transplanted patients wished to be pregnant among whom 12 (67%) had at least one pregnancy and 8 (44%) had at least one live birth.
Limitations, reasons for caution
This is a small sample within a single institution. The patients were referred from many centers for ovarian tissue cryopreservation and secondary ACOTT. They were followed until they became pregnant and then referred to their gynecologist. Finally, three patients who did not wish to conceive were lost of follow-up.
Wider implications of the findings
This case series confirms the feasibility and safety of robot assisted ACOTT. The procedure is longer when performed with the robot. The fertility outcome (pregnancy/livebirth rates) is comparable with the published data. The added value of the robot approach needs to be investigated in larger series with long term follow-up.
Trial registration number
P2004/122
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Affiliation(s)
- M Fastrez
- Cliniques Universitaires de Bruxelles - Hôpital Erasme, OB GYN , Brussels, Belgium
| | - P Simon
- Cliniques Universitaires de Bruxelles - Hôpital Erasme, OB GYN , Brussels, Belgium
| | - J Dechene
- Cliniques Universitaires de Bruxelles - Hôpital Erasme, OB GYN , Brussels, Belgium
| | - E Van Den Abbeel
- Cliniques Universitaires de Bruxelles - Hôpital Erasme, OB GYN , Brussels, Belgium
| | - A Delbaere
- Cliniques Universitaires de Bruxelles - Hôpital Erasme, OB GYN , Brussels, Belgium
| | - I Demeestere
- Cliniques Universitaires de Bruxelles - Hôpital Erasme, OB GYN , Brussels, Belgium
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12
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Thupakula U, Perrin V, Palacio-Morales A, Cario L, Aprili M, Simon P, Massee F. Coherent and Incoherent Tunneling into Yu-Shiba-Rusinov States Revealed by Atomic Scale Shot-Noise Spectroscopy. Phys Rev Lett 2022; 128:247001. [PMID: 35776485 DOI: 10.1103/physrevlett.128.247001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/27/2021] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
The pair breaking potential of individual magnetic impurities in s-wave superconductors generates localized states inside the superconducting gap commonly referred to as Yu-Shiba-Rusinov (YSR) states whose isolated nature makes them promising building blocks for artificial structures that may host Majorana fermions. One of the challenges in this endeavor is to understand their intrinsic lifetime, ℏ/Λ, which is expected to be limited by the inelastic coupling with the continuum thus leading to decoherence. Here we use shot-noise scanning tunneling microscopy to reveal that electron tunneling into superconducting 2H-NbSe_{2} mediated by YSR states is not Poissonian, but ordered as a function of time, as evidenced by a reduction of the noise. Moreover, our data show the concomitant transfer of charges e and 2e, indicating that incoherent single particle and coherent Andreev processes operate simultaneously. From the quantitative agreement between experiment and theory we obtain Λ=1 μeV≪k_{B}T demonstrating that shot noise can probe energy scales and timescales inaccessible by conventional spectroscopy whose resolution is thermally limited.
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Affiliation(s)
- U Thupakula
- Laboratoire de Physique des Solides (CNRS UMR 8502), Bâtiment 510, Université Paris-Sud/Université Paris-Saclay, 91405 Orsay, France
| | - V Perrin
- Laboratoire de Physique des Solides (CNRS UMR 8502), Bâtiment 510, Université Paris-Sud/Université Paris-Saclay, 91405 Orsay, France
| | - A Palacio-Morales
- Laboratoire de Physique des Solides (CNRS UMR 8502), Bâtiment 510, Université Paris-Sud/Université Paris-Saclay, 91405 Orsay, France
| | - L Cario
- Université de Nantes, CNRS, Institut des Matériaux Jean Rouxel, IMN, F-44000 Nantes, France
| | - M Aprili
- Laboratoire de Physique des Solides (CNRS UMR 8502), Bâtiment 510, Université Paris-Sud/Université Paris-Saclay, 91405 Orsay, France
| | - P Simon
- Laboratoire de Physique des Solides (CNRS UMR 8502), Bâtiment 510, Université Paris-Sud/Université Paris-Saclay, 91405 Orsay, France
| | - F Massee
- Laboratoire de Physique des Solides (CNRS UMR 8502), Bâtiment 510, Université Paris-Sud/Université Paris-Saclay, 91405 Orsay, France
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13
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Hillen B, Legat L, Knoll R, Süß V, Nitsche O, Simon P, Poplawska K. P034 Long-term elexacaftor/tezacaftor/ivacaftor CFTR modulation significantly increases lung function and peak power output in people with cystic fibrosis. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00367-8] [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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14
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Simon P, Sahraoui F. Exact law for compressible pressure-anisotropic magnetohydrodynamic turbulence: Toward linking energy cascade and instabilities. Phys Rev E 2022; 105:055111. [PMID: 35706285 DOI: 10.1103/physreve.105.055111] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
We derive an exact law for compressible pressure-anisotropic magnetohydrodynamic turbulence. For a gyrotropic pressure tensor, we study the double-adiabatic case and show the presence of new flux and source terms in the exact law, reminiscent of the plasma instability conditions due to pressure anisotropy. The Hall term is shown to bring ion-scale corrections to the exact law without affecting explicitly the pressure terms. In the pressure isotropy limit we recover all known results obtained for isothermal and polytropic closures. The incompressible limit of the gyrotropic system leads to a generalization of the Politano and Pouquet's law where a new incompressible source term is revealed and reflects exchanges of the magnetic and kinetic energies with the no-longer-conserved internal energy. We highlight the possibilities offered by the new laws to investigate potential links between turbulence cascade and instabilities widely observed in laboratory and astrophysical plasmas.
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Affiliation(s)
- P Simon
- Laboratoire de Physique des Plasmas (LPP), CNRS, Observatoire de Paris, Sorbonne Université, Université Paris-Saclay, École polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau, France
| | - F Sahraoui
- Laboratoire de Physique des Plasmas (LPP), CNRS, Observatoire de Paris, Sorbonne Université, Université Paris-Saclay, École polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau, France
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15
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Boudjema K, Simon P, Moulin T, Pon D, Chays A, Vouhé P. Bonnes pratiques en matière de télémédecine. Bulletin de l'Académie Nationale de Médecine 2022; 206:657-659. [PMID: 35601233 PMCID: PMC9107320 DOI: 10.1016/j.banm.2022.03.007] [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] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 03/30/2022] [Indexed: 11/15/2022]
Abstract
La télémédecine ou médecine à distance s’est imposée aux soignants à la faveur de la pandémie à SARS-Cov2. Elle doit être considérée comme un outil capable d’améliorer la pratique d’une médecine moderne. Ce texte en rappel les règles d’exercice et incite à en organiser l’enseignement.
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16
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Nicholas W, Sood N, Lam CN, Kotha R, Hu H, Simon P. Did prioritizing essential workers help to achieve racial/ethnic equity in early COVID-19 vaccine distribution? The LA pandemic surveillance cohort study. Am J Ind Med 2022; 65:231-241. [PMID: 35187706 PMCID: PMC9082038 DOI: 10.1002/ajim.23335] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/07/2022] [Accepted: 02/02/2022] [Indexed: 12/04/2022]
Abstract
Background Most US states and counties prioritized essential workers for early access to COVID‐19 vaccines due to their heightened occupational risk. Racial/ethnic groups most impacted by COVID‐19 are overrepresented among essential workers. This study estimates the effects of prioritizing essential workers on racial/ethnic equity in COVID‐19 vaccination. Methods Survey data were collected from 5500 Los Angeles County adult residents in March and April 2021. Multivariate regression models were used to assess marginal changes in probabilities of vaccination attributable to essential worker status by race/ethnicity. These probabilities were multiplied by population proportions of essential workers in each racial/ethnic group to estimate the effects of prioritizing essential workers on vaccine equity in the population. Results While Latinos (24.9%), Blacks (22.4%), and Asians (21.4%) were more likely to be prioritized essential workers than Whites (14.3%), their marginal gains in vaccine uptake due to their essential worker status did not significantly differ from that of Whites. At the population‐level, prioritizing vaccines for essential workers increased the probabilities of vaccination by small and similar amounts among Asians (5.3%; 95% confidence interval [CI]: 3.3%, 7.5%), Blacks (4.0%; 95% CI: 1.7%, 6.5%), Latinos (3.7%; 95% CI: 2.3%, 5.1%), and Whites (2.9%; 95% CI :1.9%, 3.9%). Conclusions Prioritizing essential workers did not provide proportionally greater early vaccine uptake benefits to racial/ethnic groups that were disproportionately affected by COVID‐19. Early prioritization of essential workers during vaccine campaigns is an important but insufficient strategy for reducing racial/ethnic disparities in early vaccine uptake. Additional strategies addressing access and trust are needed to achieve greater equity in vaccine distribution.
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Affiliation(s)
- Will Nicholas
- Los Angeles County Department of Public Health Los Angeles California USA
| | - Neeraj Sood
- Sol Price School of Public Policy University of Southern California Los Angeles California USA
- Schaeffer Center for Health Policy and Economics University of Southern California Los Angeles California USA
- Keck School of Medicine University of Southern California Los Angeles California USA
| | - Chun Nok Lam
- Keck School of Medicine University of Southern California Los Angeles California USA
| | - Rani Kotha
- Sol Price School of Public Policy University of Southern California Los Angeles California USA
- Schaeffer Center for Health Policy and Economics University of Southern California Los Angeles California USA
| | - Howard Hu
- Keck School of Medicine University of Southern California Los Angeles California USA
| | - Paul Simon
- Los Angeles County Department of Public Health Los Angeles California USA
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17
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Ehrlich H, Luczak M, Ziganshin R, Mikšík I, Wysokowski M, Simon P, Baranowska‐Bosiacka I, Kupnicka P, Ereskovsky A, Galli R, Dyshlovoy S, Fischer J, Tabachnick KR, Petrenko I, Jesionowski T, Lubkowska A, Figlerowicz M, Ivanenko VN, Summers AP. Arrested in Glass: Actin within Sophisticated Architectures of Biosilica in Sponges. Adv Sci (Weinh) 2022; 9:e2105059. [PMID: 35156333 PMCID: PMC9009123 DOI: 10.1002/advs.202105059] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/25/2022] [Indexed: 06/14/2023]
Abstract
Actin is a fundamental member of an ancient superfamily of structural intracellular proteins and plays a crucial role in cytoskeleton dynamics, ciliogenesis, phagocytosis, and force generation in both prokaryotes and eukaryotes. It is shown that actin has another function in metazoans: patterning biosilica deposition, a role that has spanned over 500 million years. Species of glass sponges (Hexactinellida) and demosponges (Demospongiae), representatives of the first metazoans, with a broad diversity of skeletal structures with hierarchical architecture unchanged since the late Precambrian, are studied. By etching their skeletons, organic templates dominated by individual F-actin filaments, including branched fibers and the longest, thickest actin fiber bundles ever reported, are isolated. It is proposed that these actin-rich filaments are not the primary site of biosilicification, but this highly sophisticated and multi-scale form of biomineralization in metazoans is ptterned.
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Affiliation(s)
- Hermann Ehrlich
- Institute of Electronic and Sensor MaterialsTU Bergakademie FreibergFreiberg09599Germany
- Center for Advanced TechnologyAdam Mickiewicz UniversityPoznan61614Poland
| | - Magdalena Luczak
- Institute of Bioorganic ChemistryPolish Academy of SciencesPoznan61704Poland
| | - Rustam Ziganshin
- Institute of Bioorganic ChemistryRussian Academy of SciencesMoscow142290Russian Federation
| | - Ivan Mikšík
- Institute of PhysiologyThe Czech Academy of SciencesPrague142 20Czech Republic
| | - Marcin Wysokowski
- Institute of Electronic and Sensor MaterialsTU Bergakademie FreibergFreiberg09599Germany
- Faculty of Chemical TechnologyInstitute of Chemical Technology and EngineeringPoznan University of TechnologyPoznan60965Poland
| | - Paul Simon
- Max Planck Institute for Chemical Physics of SolidsDresden01187Germany
| | - Irena Baranowska‐Bosiacka
- Department of Biochemistry and Medical ChemistryPomeranian Medical University in SzczecinSzczecin70111Poland
| | - Patrycja Kupnicka
- Department of Biochemistry and Medical ChemistryPomeranian Medical University in SzczecinSzczecin70111Poland
| | - Alexander Ereskovsky
- Institut Méditerranéen de Biodiversité et d'Ecologie (IMBE)CNRSIRDAix Marseille UniversitéMarseille13003France
- Biological FacultySt. Petersburg State UniversitySt. Petersburg199034Russian Federation
- Koltzov Institute of Developmental Biology of Russian Academy of SciencesMoscow119334Russian Federation
| | - Roberta Galli
- Clinical Sensoring and MonitoringDepartment of Anesthesiology and Intensive Care MedicineTU DresdenDresden01307Germany
| | - Sergey Dyshlovoy
- Laboratory of Experimental OncologyUniversity Medical Center Hamburg‐EppendorfHamburg20251Germany
- Laboratory of PharmacologyA.V. Zhirmunsky National Scientific Center of Marine BiologyFar Eastern BranchRussian Academy of SciencesVladivostok690041Russian Federation
| | - Jonas Fischer
- Institute of Electronic and Sensor MaterialsTU Bergakademie FreibergFreiberg09599Germany
| | | | - Iaroslav Petrenko
- Institute of Electronic and Sensor MaterialsTU Bergakademie FreibergFreiberg09599Germany
| | - Teofil Jesionowski
- Faculty of Chemical TechnologyInstitute of Chemical Technology and EngineeringPoznan University of TechnologyPoznan60965Poland
| | - Anna Lubkowska
- Department of Functional Diagnostics and Physical MedicineFaculty of Health SciencesPomeranian Medical University in SzczecinSzczecin71210Poland
| | - Marek Figlerowicz
- Institute of Bioorganic ChemistryPolish Academy of SciencesPoznan61704Poland
| | - Viatcheslav N. Ivanenko
- Department of Invertebrate ZoologyBiological FacultyLomonosov Moscow State UniversityMoscow119991Russian Federation
| | - Adam P. Summers
- Department of BiologyFriday Harbor LabsUniversity of WashingtonFriday HarborWA98195USA
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18
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Andreas M, Mach M, Bartunek A, Goliasch G, Kellermair J, Grund M, Simon P, Damian I, Kerbel T, Zierer A. [Transcatheter mitral valve replacement : Indications, options, and techniques as well as important aspects for perioperative care]. Med Klin Intensivmed Notfmed 2022; 117:187-190. [PMID: 35304641 PMCID: PMC8983628 DOI: 10.1007/s00063-022-00907-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 10/25/2021] [Accepted: 12/01/2021] [Indexed: 11/24/2022]
Abstract
Die interventionelle Therapie der Mitralklappe stellt im Gegensatz zur Aortenklappenintervention eine größere Herausforderung dar. Die Therapie mittels Mitra-Clip zur Rekonstruktion der Mitralklappe wurde erstmals im Jahr 2003 durchgeführt und ist seit dem Jahr 2008 in Europa zugelassen. Die erste Implantation der einzig zugelassenen interventionellen Mitralklappe erfolgte im Jahr 2014, die Zulassung in Europa erfolge im Jahr 2020. Es befinden sich zahlreiche andere Klappensysteme in klinischer Prüfung und werden das Portfolio wahrscheinlich erweitern. In diesem Artikel werden die Indikation für diese neue Therapieform, die technische Umsetzung sowie die spezifischen Herausforderungen für die perioperative Betreuung besprochen.
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Affiliation(s)
- Martin Andreas
- Universitätsklinik für Herzchirurgie, Medizinische Universität Wien, Währinger Gürtel 18-20, 1090, Wien, Österreich.
| | - Markus Mach
- Universitätsklinik für Herzchirurgie, Medizinische Universität Wien, Währinger Gürtel 18-20, 1090, Wien, Österreich
| | - Anna Bartunek
- Abteilung für Herz‑, Thorax- und Gefäßchirurgie, Universitätsklinik für Anästhesie, Allgemeine Intensivmedizin und Schmerztherapie, Medizinische Universität Wien, Wien, Österreich
| | - Georg Goliasch
- Abteilung für Kardiologie, Universitätsklinik für Innere Medizin II, Medizinische Universität Wien, Wien, Österreich
| | - Jörg Kellermair
- Klinik für Kardiologie und internistische Intensivmedizin, Kepler Universitätsklinikum, Linz, Österreich
| | - Michael Grund
- Klinik für Kardiologie und internistische Intensivmedizin, Kepler Universitätsklinikum, Linz, Österreich
| | - Paul Simon
- Universitätsklinik für Herzchirurgie, Medizinische Universität Wien, Währinger Gürtel 18-20, 1090, Wien, Österreich
| | - Ilinca Damian
- Universitätsklinik für Herz‑, Gefäß- und Thoraxchirurgie, Kepler Universitätsklinikum, Linz, Österreich
| | - Tillmann Kerbel
- Universitätsklinik für Herzchirurgie, Medizinische Universität Wien, Währinger Gürtel 18-20, 1090, Wien, Österreich
| | - Andreas Zierer
- Universitätsklinik für Herz‑, Gefäß- und Thoraxchirurgie, Kepler Universitätsklinikum, Linz, Österreich
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19
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Feig M, Carrillo-Cabrera W, Bobnar M, Simon P, Curfs C, Levytskyi V, Tsirlin AA, Leithe-Jasper A, Gumeniuk R. Composition dependent polymorphism and superconductivity in Y 3+x{Rh,Ir} 4Ge 13-x. Dalton Trans 2022; 51:4734-4748. [PMID: 35244111 DOI: 10.1039/d2dt00167e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymorphism is observed in the Y3+xRh4Ge13-x series. The decrease of Y-content leads to the transformation of the primitive cubic Y3.6Rh4Ge12.4 [x = 0.6, space group Pm3̄n, a = 8.96095(9) Å], revealing a strongly disordered structure of the Yb3Rh4Sn13 Remeika prototype, into a body-centred cubic structure [La3Rh4Sn13 structure type, space group I4132, a = 17.90876(6) Å] for x = 0.4 and further into a tetragonal arrangement (Lu3Ir4Ge13 structure type, space group I41/amd, a = 17.86453(4) Å, a = 17.91076(6) Å) for the stoichiometric (i.e. x = 0) Y3Rh4Ge13. Analogous symmetry lowering is found within the Y3+xIr4Ge13-x series, where the compound with Y-content x = 0.6 is crystallizing with La3Rh4Sn13 structure type [a = 17.90833(8) Å] and the stoichiometric Y3Ir4Ge13 is isostructural with the Rh-analogue [a = 17.89411(9) Å, a = 17.9353(1) Å]. The structural relationships of these derivatives of the Remeika prototype are discussed. Compounds from the Y3+xRh4Ge13-x series are found to be weakly-coupled BCS-like superconductors with Tc = 1.25, 0.43 and 0.6, for x = 0.6, 0.4 and 0, respectively. They also reveal low thermal conductivity (<1.5 W K-1 m-1 in the temperature range 1.8-350 K) and small Seebeck coefficients. The latter are common for metallic systems. Y3Rh4Ge13 undergoes a first-order phase transition at Tf = 177 K, with signatures compatible to a charge density wave scenario. The electronic structure calculations confirm the instability of the idealized Yb3Rh4Sn13-like structural arrangements for Y3Rh4Ge13 and Y3Ir4Ge13.
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Affiliation(s)
- Manuel Feig
- Institut für Experimentelle Physik, TU Bergakademie Freiberg, Leipziger Straße 23, 09596 Freiberg, Germany. .,The Rossendorf Beamline at ESRF, CS 40220, 38043 Grenoble Cedex 9, France.,Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, P.O. Box 510119, 01314 Dresden, Germany
| | - Wilder Carrillo-Cabrera
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Matej Bobnar
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Paul Simon
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Caroline Curfs
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex, France
| | - Volodymyr Levytskyi
- Institut für Experimentelle Physik, TU Bergakademie Freiberg, Leipziger Straße 23, 09596 Freiberg, Germany.
| | - Alexander A Tsirlin
- Experimental Physics VI, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, 86135 Augsburg, Germany
| | - Andreas Leithe-Jasper
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Roman Gumeniuk
- Institut für Experimentelle Physik, TU Bergakademie Freiberg, Leipziger Straße 23, 09596 Freiberg, Germany.
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20
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Simon P, Pompe W, Gruner D, Sturm E, Ostermann K, Matys S, Vogel M, Rödel G. Nested Formation of Calcium Carbonate Polymorphs in a Bacterial Surface Membrane with a Graded Nanoconfinement: An Evolutionary Strategy to Ensure Bacterial Survival. ACS Biomater Sci Eng 2022; 8:526-539. [PMID: 34995442 PMCID: PMC8848282 DOI: 10.1021/acsbiomaterials.1c01280] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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] [Indexed: 11/29/2022]
Abstract
![]()
It is the intention
of this study to elucidate the nested formation
of calcium carbonate polymorphs or polyamorphs in the different nanosized
compartments. With these observations, it can be concluded how the
bacteria can survive in a harsh environment with high calcium carbonate
supersaturation. The mechanisms of calcium carbonate precipitation
at the surface membrane and at the underlying cell wall membrane of
the thermophilic soil bacterium Geobacillus stearothermophilus DSM 13240 have been revealed by high-resolution transmission electron
microscopy and atomic force microscopy. In this Gram-positive bacterium,
nanopores in the surface layer (S-layer) and in the supporting cell
wall polymers are nucleation sites for metastable calcium carbonate
polymorphs and polyamorphs. In order to observe the different metastable
forms, various reaction times and a low reaction temperature (4 °C)
have been chosen. Calcium carbonate polymorphs nucleate in the confinement
of nanosized pores (⌀ 3–5 nm) of the S-layer. The hydrous
crystalline calcium carbonate (ikaite) is formed initially with [110]
as the favored growth direction. It transforms into the anhydrous
metastable vaterite by a solid-state transition. In a following reaction
step, calcite is precipitated, caused by dissolution of vaterite in
the aqueous solution. In the larger pores of the cell wall (⌀
20–50 nm), hydrated amorphous calcium carbonate is grown, which
transforms into metastable monohydrocalcite, aragonite, or calcite.
Due to the sequence of reaction steps via various metastable phases,
the bacteria gain time for chipping the partially mineralized S-layer,
and forming a fresh S-layer (characteristic growth time about 20 min).
Thus, the bacteria can survive in solutions with high calcium carbonate
supersaturation under the conditions of forced biomineralization.
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Affiliation(s)
- Paul Simon
- Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Wolfgang Pompe
- Institute of Materials Science, Technische Universität Dresden, Helmholtzstraße 7, 01069 Dresden, Germany
| | - Denise Gruner
- Institute of Genetics, Technische Universität Dresden, Zellescher Weg 20b, 01217 Dresden, Germany.,Polymeric Microsystems, Technische Universität Dresden, Helmholtzstraße 100, 01069 Dresden, Germany
| | - Elena Sturm
- Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straße 40, 01187 Dresden, Germany.,Physical Chemistry, University of Konstanz, POB 714, D-78457 Konstanz, Germany
| | - Kai Ostermann
- Institute of Genetics, Technische Universität Dresden, Zellescher Weg 20b, 01217 Dresden, Germany
| | - Sabine Matys
- Helmholtz Institute Freiberg for Resource Technology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzener Landstraße 400, 01328 Dresden, Germany
| | - Manja Vogel
- Helmholtz Institute Freiberg for Resource Technology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzener Landstraße 400, 01328 Dresden, Germany
| | - Gerhard Rödel
- Institute of Genetics, Technische Universität Dresden, Zellescher Weg 20b, 01217 Dresden, Germany
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21
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Schlein J, Wiedemann D, Gabriel H, Simon P, Wollenek G, Kitzmüller E, Michel-Behnke I, Laufer G, Zimpfer D. Long-Term Outcomes after Surgical Repair of Supravalvular Aortic Stenosis in Pediatric Patients: 30 Years’ Single-Center Outcome. Thorac Cardiovasc Surg 2022. [DOI: 10.1055/s-0042-1743018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J. Schlein
- Medical University of Vienna, Wien, Austria
| | - D. Wiedemann
- Cardiac Surgery, Medical University of Vienna, Wien, Austria
| | - H. Gabriel
- Cardiology, Medical University Vienna, Vienna, Austria
| | - P. Simon
- Medical University of Vienna, Wien, Austria
| | - G. Wollenek
- Cardiology, Medical University Vienna, Vienna, Austria
| | | | - I. Michel-Behnke
- Pediatric Cardiology, Medical University of Vienna, Wien, Austria
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22
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Andreas M, Kerbel T, Damian I, Grund M, Kellermair J, Bartunek A, Simon P, Mach M, Werner P, Zierer A. Transapical Beating-Heart Mitral Valve Replacement in Austria. Thorac Cardiovasc Surg 2022. [DOI: 10.1055/s-0042-1742886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- M. Andreas
- Medical University of Vienna, Wien, Austria
| | - T. Kerbel
- Medical University of Vienna, Wien, Austria
| | - I. Damian
- Kepler University Hospital, Med Campus IV, Linz, Austria
| | - M. Grund
- Kepler University Hospital, Med Campus IV, Linz, Austria
| | - J. Kellermair
- Kepler University Hospital, Med Campus IV, Linz, Austria
| | | | - P. Simon
- Medical University of Vienna, Wien, Austria
| | - M. Mach
- Medical University Vienna, Vienna, Austria
| | - P. Werner
- Medical University Vienna, Vienna, Austria
| | - A. Zierer
- Kepler University Hospital, Med Campus IV, Linz, Austria
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Palacios C, Simon P, Steward A, Garner T, Hameed H, Shetgiri R. Impact of an Elementary School-Based Wellness Initiative on Child Obesity Prevalence: LiveWell Kids. Health Promot Pract 2022; 24:560-565. [PMID: 35043717 DOI: 10.1177/15248399211065717] [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] [Indexed: 11/16/2022]
Abstract
Despite major public health investments over the past several decades, little progress has been made in reducing the prevalence of obesity among school-aged children in the United States. In 2007, the Redondo Beach Unified School District (RBUSD) and the Beach Cities Health District launched a wellness initiative, LiveWell Kids, that included multi-level interventions to improve nutrition and increase physical activity. The initiative also included annual measurements of height and weight among all kindergartners and first, third, and fifth graders in the eight elementary schools in the RBUSD. To assess trends in obesity prevalence, we analyzed height and weight data collected during the 2008 to 2009 to 2018 to 2019 school years. To more fully assess the impact of the initiative, we conducted a least-squares regression difference-in-differences analysis of data from the California Physical Fitness Testing Program on measured height and weight among fifth graders from the RBUSD, three neighboring school districts, and Los Angeles County overall. Among elementary school students in the RBUSD, obesity prevalence decreased from 13.9% in 2008 to 2009 to 6.4% in 2018 to 2019. Significant declines in prevalence were observed in all eight elementary schools, and across all grade levels and demographic groups. Among fifth graders, a similar decline in obesity prevalence was not observed in the other school districts or the county overall. The findings suggest that interventions that adhere to the socio-ecologic model and engage students, parents, and school personnel at all levels while also addressing school and community environments may reduce obesity prevalence among elementary school-aged children.
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Affiliation(s)
| | - Paul Simon
- Los Angeles County Department of Public Health, Los Angeles, CA, USA
| | - Ali Steward
- Beach Cities Health District, Redondo Beach, CA, USA
| | - Tessa Garner
- Beach Cities Health District, Redondo Beach, CA, USA
| | - Heena Hameed
- Los Angeles County Department of Public Health, Los Angeles, CA, USA
| | - Rashmi Shetgiri
- Los Angeles County Department of Public Health, Los Angeles, CA, USA
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Baliga M, Haladi S, Kalekhan F, Simon P. Study of general health and haematological status of automobile garage workers exposed to toxicants: Comparison with office workers. Hamdan Med J 2022. [DOI: 10.4103/hmj.hmj_53_21] [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: 11/04/2022] Open
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25
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Harper G, Stables D, Simon P, Ahmed Z, Smith K, Robson J, Dezateux C. Evaluation of the ASSIGN open-source deterministic address-matching algorithm for allocating unique property reference numbers to general practitioner-recorded patient addresses. Int J Popul Data Sci 2021; 6:1674. [PMID: 34970633 PMCID: PMC8678979 DOI: 10.23889/ijpds.v6i1.1674] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
INTRODUCTION Linking places to people is a core element of the UK government's geospatial strategy. Matching patient addresses in electronic health records to their Unique Property Reference Numbers (UPRNs) enables spatial linkage for research, innovation and public benefit. Available algorithms are not transparent or evaluated for use with addresses recorded by health care providers. OBJECTIVES To describe and quality assure the open-source deterministic ASSIGN address-matching algorithm applied to general practitioner-recorded patient addresses. METHODS Best practice standards were used to report the ASSIGN algorithm match rate, sensitivity and positive predictive value using gold-standard datasets from London and Wales. We applied the ASSIGN algorithm to the recorded addresses of a sample of 1,757,018 patients registered with all general practices in north east London. We examined bias in match results for the study population using multivariable analyses to estimate the likelihood of an address-matched UPRN by demographic, registration, and organisational variables. RESULTS We found a 99.5% and 99.6% match rate with high sensitivity (0.999,0.998) and positive predictive value (0.996,0.998) for the Welsh and London gold standard datasets respectively, and a 98.6% match rate for the study population.The 1.4% of the study population without a UPRN match were more likely to have changed registered address in the last 12 months (match rate: 95.4%), be from a Chinese ethnic background (95.5%), or registered with a general practice using the SystmOne clinical record system (94.4%). Conversely, people registered for more than 6.5 years with their general practitioner were more likely to have a match (99.4%) than those with shorter registration durations. CONCLUSIONS ASSIGN is a highly accurate open-source address-matching algorithm with a high match rate and minimal biases when evaluated against a large sample of general practice-recorded patient addresses. ASSIGN has potential to be used in other address-based datasets including those with information relevant to the wider determinants of health.
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Affiliation(s)
- Gill Harper
- Clinical Effectiveness Group, Centre for Primary Care, Wolfson Institute of Population Health, Barts and the London School of Medicine and Dentistry, Queen Mary, University of London
| | | | | | - Zaheer Ahmed
- Clinical Effectiveness Group, Centre for Primary Care, Wolfson Institute of Population Health, Barts and the London School of Medicine and Dentistry, Queen Mary, University of London
| | - Kelvin Smith
- Clinical Effectiveness Group, Centre for Primary Care, Wolfson Institute of Population Health, Barts and the London School of Medicine and Dentistry, Queen Mary, University of London
| | - John Robson
- Clinical Effectiveness Group, Centre for Primary Care, Wolfson Institute of Population Health, Barts and the London School of Medicine and Dentistry, Queen Mary, University of London
| | - Carol Dezateux
- Clinical Effectiveness Group, Centre for Primary Care, Wolfson Institute of Population Health, Barts and the London School of Medicine and Dentistry, Queen Mary, University of London
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26
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Nicholas W, Greenwell L, Henwood BF, Simon P. Using Point-in-Time Homeless Counts to Monitor Mortality Trends Among People Experiencing Homelessness in Los Angeles County, California, 2015‒2019. Am J Public Health 2021; 111:2212-2222. [PMID: 34878861 PMCID: PMC8667842 DOI: 10.2105/ajph.2021.306502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2021] [Indexed: 11/04/2022]
Abstract
Objectives. To report trends in mortality rates, mortality rate ratios (MRRs), and causes of death among people experiencing homelessness (PEH) in Los Angeles County, California, by using annual point-in-time homeless counts and to compare findings to published longitudinal cohort studies of homeless mortality. Methods. We enumerated homeless deaths and determined causes by using 2015-2019 medical examiner‒coroner data matched to death certificate data. We estimated midyear homeless population denominators by averaging consecutive January point-in-time homeless counts. We used annual demographic surveys of PEH to estimate age- and gender-adjusted MRRs. We identified comparison studies through a literature review. Results. Mortality rates increased from 2015 to 2019. Drug overdose was the leading cause of death. Mortality was higher among White than among Black and Latino PEH. Compared with the general population, MRRs ranged from 2.8 (95% confidence interval [CI] = 2.7, 3.0) for all causes to 35.1 (95% CI = 31.9, 38.4) for drug overdose. Crude mortality rates and all-cause MRRs from comparison cohort studies were similar to those in the current study. Conclusions. These methods can be adapted by other urban jurisdictions seeking to better understand and reduce mortality in their homeless populations. (Am J Public Health. 2021;111(12):2212-2222. https://doi.org/10.2105/AJPH.2021.306502).
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Affiliation(s)
- Will Nicholas
- Will Nicholas, Lisa Greenwell, and Paul Simon are with the Los Angeles County Department of Public Health, Los Angeles, CA. Benjamin F. Henwood is with the Suzanne Dworak-Peck School of Social Work, University of Southern California. Los Angeles
| | - Lisa Greenwell
- Will Nicholas, Lisa Greenwell, and Paul Simon are with the Los Angeles County Department of Public Health, Los Angeles, CA. Benjamin F. Henwood is with the Suzanne Dworak-Peck School of Social Work, University of Southern California. Los Angeles
| | - Benjamin F Henwood
- Will Nicholas, Lisa Greenwell, and Paul Simon are with the Los Angeles County Department of Public Health, Los Angeles, CA. Benjamin F. Henwood is with the Suzanne Dworak-Peck School of Social Work, University of Southern California. Los Angeles
| | - Paul Simon
- Will Nicholas, Lisa Greenwell, and Paul Simon are with the Los Angeles County Department of Public Health, Los Angeles, CA. Benjamin F. Henwood is with the Suzanne Dworak-Peck School of Social Work, University of Southern California. Los Angeles
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27
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Mach M, Okutucu S, Kerbel T, Arjomand A, Fatihoglu SG, Werner P, Simon P, Andreas M. Vascular Complications in TAVR: Incidence, Clinical Impact, and Management. J Clin Med 2021; 10:jcm10215046. [PMID: 34768565 PMCID: PMC8584339 DOI: 10.3390/jcm10215046] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 08/27/2021] [Revised: 10/23/2021] [Accepted: 10/24/2021] [Indexed: 12/12/2022] Open
Abstract
Transcatheter aortic valve replacement (TAVR) has replaced surgical aortic valve replacement as the new gold standard in elderly patients with severe aortic valve stenosis. However, alongside this novel approach, new complications emerged that require swift diagnosis and adequate management. Vascular access marks the first step in a TAVR procedure. There are several possible access sites available for TAVR, including the transfemoral approach as well as transaxillary/subclavian, transcarotid, transapical, and transcaval. Most cases are primarily performed through a transfemoral approach, while other access routes are mainly conducted in patients not suitable for transfemoral TAVR. As vascular access is achieved primarily by large bore sheaths, vascular complications are one of the major concerns during TAVR. With rising numbers of TAVR being performed, the focus on prevention and successful management of vascular complications will be of paramount importance to lower morbidity and mortality of the procedures. Herein, we aimed to review the most common vascular complications associated with TAVR and summarize their diagnosis, management, and prevention of vascular complications in TAVR.
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Affiliation(s)
- Markus Mach
- Department of Cardiac Surgery, Medical University Vienna, 1090 Vienna, Austria; (T.K.); (P.W.); (P.S.); (M.A.)
- Correspondence: ; Tel.: +43-1-40400-52620
| | - Sercan Okutucu
- Department of Cardiology, Memorial Ankara Hospital, 06520 Ankara, Turkey;
| | - Tillmann Kerbel
- Department of Cardiac Surgery, Medical University Vienna, 1090 Vienna, Austria; (T.K.); (P.W.); (P.S.); (M.A.)
| | - Aref Arjomand
- Department of Cardiology, St. John of God Hospital, Geelong, VIC 3220, Australia;
| | | | - Paul Werner
- Department of Cardiac Surgery, Medical University Vienna, 1090 Vienna, Austria; (T.K.); (P.W.); (P.S.); (M.A.)
| | - Paul Simon
- Department of Cardiac Surgery, Medical University Vienna, 1090 Vienna, Austria; (T.K.); (P.W.); (P.S.); (M.A.)
| | - Martin Andreas
- Department of Cardiac Surgery, Medical University Vienna, 1090 Vienna, Austria; (T.K.); (P.W.); (P.S.); (M.A.)
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Tremblay J, Haloui M, Attaoua R, Tahir R, Hishmih C, Harvey F, Marois-Blanchet FC, Long C, Simon P, Santucci L, Hizel C, Chalmers J, Marre M, Harrap S, Cífková R, Krajčoviechová A, Matthews DR, Williams B, Poulter N, Zoungas S, Colagiuri S, Mancia G, Grobbee DE, Rodgers A, Liu L, Agbessi M, Bruat V, Favé MJ, Harwood MP, Awadalla P, Woodward M, Hussin JG, Hamet P. Correction to: Polygenic risk scores predict diabetes complications and their response to intensive blood pressure and glucose control. Diabetologia 2021; 64:2355-2356. [PMID: 34448881 PMCID: PMC8587372 DOI: 10.1007/s00125-021-05544-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Johanne Tremblay
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada.
| | - Mounsif Haloui
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - Redha Attaoua
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - Ramzan Tahir
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - Camil Hishmih
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - François Harvey
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | | | - Carole Long
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - Paul Simon
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - Lara Santucci
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - Candan Hizel
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - John Chalmers
- The George Institute for Global Health, University of New South Wales, Sydney, NSW, Australia
| | - Michel Marre
- Clinique Ambroise Paré, Neuilly-sur-Seine, and Centre de Recherches des Cordeliers, Paris, France
| | - Stephen Harrap
- Department of Physiology, University of Melbourne, Melbourne, VIC, Australia
| | - Renata Cífková
- Center for Cardiovascular Prevention, First Faculty of Medicine, Charles University in Prague and Thomayer Hospital, Prague, Czech Republic
| | - Alena Krajčoviechová
- Center for Cardiovascular Prevention, First Faculty of Medicine, Charles University in Prague and Thomayer Hospital, Prague, Czech Republic
| | - David R Matthews
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK
| | - Bryan Williams
- Institute of Cardiovascular Science, University College London, London, UK
| | - Neil Poulter
- School of Public Health, Faculty of Medicine, Imperial College London, London, UK
| | - Sophia Zoungas
- School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | | | - Giuseppe Mancia
- Istituto Auxologico Italiano, University of Milano, Bicocca, Italy
| | - Diederick E Grobbee
- Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Anthony Rodgers
- The George Institute for Global Health, University of New South Wales, Sydney, NSW, Australia
| | - Liusheng Liu
- Beijing Hypertension League Institute, Beijing, China
| | | | - Vanessa Bruat
- Ontario Institute for Cancer Research, Toronto, ON, Canada
| | | | | | - Philip Awadalla
- Ontario Institute for Cancer Research, Toronto, ON, Canada
- Department of Molecular Genetics and Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Mark Woodward
- The George Institute for Global Health, University of New South Wales, Sydney, NSW, Australia.
- School of Public Health, Faculty of Medicine, Imperial College London, London, UK.
- The George Institute for Global Health, School of Public Health, Imperial College London, London, UK.
| | - Julie G Hussin
- Montreal Heart Institute, Research Center, Montréal, Québec, Canada
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada
| | - Pavel Hamet
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada.
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Schievink WI, Maya MM, Moser FG, Simon P, Nuño M. Incidence of spontaneous intracranial hypotension in a community. Beverly Hills, California, 2006-2020. Cephalalgia 2021; 42:312-316. [PMID: 34553617 DOI: 10.1177/03331024211048510] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Spontaneous intracranial hypotension is diagnosed with an increasing frequency, but epidemiologic data are scarce. The aim of this study was to determine the incidence rate of spontaneous intracranial hypotension in a defined population. METHODS Using a prospectively maintained registry, all patients with spontaneous intracranial hypotension residing in Beverly Hills, California, evaluated at our Medical Center between 2006 and 2020 were identified in this population-based incidence study. Our Medical Center is a quaternary referral center for spontaneous intracranial hypotension and is located within 1.5 miles from downtown Beverly Hills. RESULTS A total of 19 patients with spontaneous intracranial hypotension were identified. There were 12 women and seven men with a mean age of 54.5 years (range, 28 to 88 years). The average annual incidence rate for all ages was 3.7 per 100,000 population (95% confidence interval [CI]: 2.0 to 5.3), 4.3 per 100,000 for women (95% CI, 1.9 to 6.7) and 2.9 per 100,000 population for men (95% CI, 0.8 to 5.1). CONCLUSION This study, for the first time, provides incidence rates for spontaneous intracranial hypotension in a defined population.
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Affiliation(s)
- Wouter I Schievink
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - M Marcel Maya
- Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Franklin G Moser
- Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Paul Simon
- Los Angeles County Department of Public Health, Los Angeles, CA, USA
| | - Miriam Nuño
- Department of Public Health Sciences, University of California Davis, Davis, CA, USA
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Cardoso-Gil R, Zelenina I, Stahl QE, Bobnar M, Koželj P, Krnel M, Burkhardt U, Veremchuk I, Simon P, Carrillo-Cabrera W, Boström M, Grin Y. The Intermetallic Semiconductor ht-IrGa 3: a Material in the in-Transformation State. ACS Mater Au 2021; 2:45-54. [PMID: 36855699 PMCID: PMC9928196 DOI: 10.1021/acsmaterialsau.1c00025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The compound IrGa3 was synthesized by direct reaction of the elements. It is formed as a high-temperature phase in the Ir-Ga system. Single-crystal X-ray diffraction analysis confirms the tetragonal symmetry (space group P42 /mnm, No. 136) with a = 6.4623(1) Å and c = 6.5688(2) Å and reveals strong disorder in the crystal structure, reflected in the huge values and anisotropy of the atomic displacement parameters. A model for the real crystal structure of ht-IrGa3 is derived by the split-position approach from the single-crystal X-ray diffraction data and confirmed by an atomic-resolution transmission electron microscopy study. Temperature-dependent electrical resistivity measurements evidence semiconductor behavior with a band gap of 30 meV. A thermoelectric characterization was performed for ht-IrGa3 and for the solid solution IrGa3-x Zn x .
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Affiliation(s)
- Raúl Cardoso-Gil
- Max-Planck-Institut
für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany,E-mail for R.C-G.:
| | - Iryna Zelenina
- Max-Planck-Institut
für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Quirin E. Stahl
- Institut
für Festkörper- und Materialphysik, TU Dresden, 01062 Dresden, Germany
| | - Matej Bobnar
- Max-Planck-Institut
für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Primož Koželj
- Max-Planck-Institut
für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Mitja Krnel
- Max-Planck-Institut
für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Ulrich Burkhardt
- Max-Planck-Institut
für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Igor Veremchuk
- Max-Planck-Institut
für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Paul Simon
- Max-Planck-Institut
für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Wilder Carrillo-Cabrera
- Max-Planck-Institut
für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Magnus Boström
- Max-Planck-Institut
für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Yuri Grin
- Max-Planck-Institut
für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany,E-mail for Yu.G.:
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31
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Simon P, Ho A, Shah MD, Shetgiri R. Trends in Mortality From COVID-19 and Other Leading Causes of Death Among Latino vs White Individuals in Los Angeles County, 2011-2020. JAMA 2021; 326:973-974. [PMID: 34279553 PMCID: PMC8290334 DOI: 10.1001/jama.2021.11945] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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] [Indexed: 11/14/2022]
Abstract
This study compares age-adjusted mortality rates before and during the COVID-19 pandemic (2011-2020) among Latino and White individuals living in Los Angeles County.
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Affiliation(s)
- Paul Simon
- Los Angeles County Department of Public Health, Los Angeles, California
| | - Alex Ho
- Los Angeles County Department of Public Health, Los Angeles, California
| | - Megha D. Shah
- Los Angeles County Department of Public Health, Los Angeles, California
| | - Rashmi Shetgiri
- Los Angeles County Department of Public Health, Los Angeles, California
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32
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Schlein J, Simon P, Wollenek G, Base E, Laufer G, Zimpfer D. Aortic valve replacement in pediatric patients: 30 years single center experience. J Cardiothorac Surg 2021; 16:259. [PMID: 34496905 PMCID: PMC8425048 DOI: 10.1186/s13019-021-01636-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 07/06/2021] [Accepted: 08/29/2021] [Indexed: 11/24/2022] Open
Abstract
Background The choice of aortic valve replacement needs to be decided in an interdisciplinary approach and together with the patients and their families regarding the need for re-operation and risks accompanying anticoagulation. We report long-term outcomes after different AVR options.
Methods A chart review of patients aged < 18 years at time of surgery, who had undergone AVR from May 1985 until April 2020 was conducted. Contraindications for Ross procedure, which is performed since 1991 at the center were reviewed in the observed non-Ross AVR cohort. The study endpoints were compared between the mechanical AVR and the biological AVR cohort. Results From May 1985 to April 2020 fifty-five patients received sixty AVRs: 33 mechanical AVRs and 27 biological AVRs. In over half of the fifty-three AVRs performed after 1991 (58.5%; 31/53) a contraindication for Ross procedure was present. Early mortality was 5% (3/60). All early deaths occurred in patients aged < 1 year at time of surgery. Two late deaths occurred and survival was 94.5% ± 3.1% at 10 years and 86.4% ± 6.2% at 30 years. Freedom from aortic valve re-operation was higher (p < 0.001) in the mechanical AVR than in the biological AVR cohort with 95.2% ± 4.6% and 33.6% ± 13.4% freedom from re-operation at 10 years respectively. Conclusions Re-operation was less frequent in the mechanical AVR cohort than in the biological AVR cohort. For mechanical AVR, the risk for thromboembolic and bleeding events was considerable with a composite linearized event rate per valve-year of 3.2%.
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Affiliation(s)
- Johanna Schlein
- University Clinic of Cardiac Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Paul Simon
- University Clinic of Cardiac Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Gregor Wollenek
- University Clinic of Cardiac Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Eva Base
- Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Division of Cardiac Thoracic Vascular Anaesthesia and Intensive Care Medicine, Medical University of Vienna, Vienna, Austria
| | - Günther Laufer
- University Clinic of Cardiac Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Daniel Zimpfer
- University Clinic of Cardiac Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
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Tremblay J, Haloui M, Attaoua R, Tahir R, Hishmih C, Harvey F, Marois-Blanchet FC, Long C, Simon P, Santucci L, Hizel C, Chalmers J, Marre M, Harrap S, Cífková R, Krajčoviechová A, Matthews DR, Williams B, Poulter N, Zoungas S, Colagiuri S, Mancia G, Grobbee DE, Rodgers A, Liu L, Agbessi M, Bruat V, Favé MJ, Harwood MP, Awadalla P, Woodward M, Hussin JG, Hamet P. Polygenic risk scores predict diabetes complications and their response to intensive blood pressure and glucose control. Diabetologia 2021; 64:2012-2025. [PMID: 34226943 PMCID: PMC8382653 DOI: 10.1007/s00125-021-05491-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/22/2021] [Indexed: 12/14/2022]
Abstract
AIMS/HYPOTHESIS Type 2 diabetes increases the risk of cardiovascular and renal complications, but early risk prediction could lead to timely intervention and better outcomes. Genetic information can be used to enable early detection of risk. METHODS We developed a multi-polygenic risk score (multiPRS) that combines ten weighted PRSs (10 wPRS) composed of 598 SNPs associated with main risk factors and outcomes of type 2 diabetes, derived from summary statistics data of genome-wide association studies. The 10 wPRS, first principal component of ethnicity, sex, age at onset and diabetes duration were included into one logistic regression model to predict micro- and macrovascular outcomes in 4098 participants in the ADVANCE study and 17,604 individuals with type 2 diabetes in the UK Biobank study. RESULTS The model showed a similar predictive performance for cardiovascular and renal complications in different cohorts. It identified the top 30% of ADVANCE participants with a mean of 3.1-fold increased risk of major micro- and macrovascular events (p = 6.3 × 10-21 and p = 9.6 × 10-31, respectively) and a 4.4-fold (p = 6.8 × 10-33) higher risk of cardiovascular death. While in ADVANCE overall, combined intensive blood pressure and glucose control decreased cardiovascular death by 24%, the model identified a high-risk group in whom it decreased the mortality rate by 47%, and a low-risk group in whom it had no discernible effect. High-risk individuals had the greatest absolute risk reduction with a number needed to treat of 12 to prevent one cardiovascular death over 5 years. CONCLUSIONS/INTERPRETATION This novel multiPRS model stratified individuals with type 2 diabetes according to risk of complications and helped to target earlier those who would receive greater benefit from intensive therapy.
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Affiliation(s)
- Johanne Tremblay
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada.
| | - Mounsif Haloui
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - Redha Attaoua
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - Ramzan Tahir
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - Camil Hishmih
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - François Harvey
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | | | - Carole Long
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - Paul Simon
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - Lara Santucci
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - Candan Hizel
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada
| | - John Chalmers
- The George Institute for Global Health, University of New South Wales, Sydney, NSW, Australia
| | - Michel Marre
- Clinique Ambroise Paré, Neuilly-sur-Seine, and Centre de Recherches des Cordeliers, Paris, France
| | - Stephen Harrap
- Department of Physiology, University of Melbourne, Melbourne, VIC, Australia
| | - Renata Cífková
- Center for Cardiovascular Prevention, First Faculty of Medicine, Charles University in Prague and Thomayer Hospital, Prague, Czech Republic
| | - Alena Krajčoviechová
- Center for Cardiovascular Prevention, First Faculty of Medicine, Charles University in Prague and Thomayer Hospital, Prague, Czech Republic
| | - David R Matthews
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK
| | - Bryan Williams
- University College London, Institute of Cardiovascular Science, London, UK
| | - Neil Poulter
- School of Public Health, Faculty of Medicine, Imperial College London, London, UK
| | - Sophia Zoungas
- School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | | | - Giuseppe Mancia
- Istituto Auxologico Italiano, University of Milano, Bicocca, Italy
| | - Diederick E Grobbee
- Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Anthony Rodgers
- The George Institute for Global Health, University of New South Wales, Sydney, NSW, Australia
| | - Liusheng Liu
- Beijing Hypertension League Institute, Beijing, China
| | | | - Vanessa Bruat
- Ontario Institute for Cancer Research, Toronto, ON, Canada
| | | | | | - Philip Awadalla
- Ontario Institute for Cancer Research, Toronto, ON, Canada
- Department of Molecular Genetics and Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Mark Woodward
- The George Institute for Global Health, University of New South Wales, Sydney, NSW, Australia.
- School of Public Health, Faculty of Medicine, Imperial College London, London, UK.
- The George Institute for Global Health, School of Public Health, Imperial College London, London, UK.
| | - Julie G Hussin
- Montreal Heart Institute, Research Center, Montréal, Québec, Canada
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada
| | - Pavel Hamet
- Department of Medicine, University of Montréal, CRCHUM, Québec, Canada.
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Brix B, White O, Ure C, Apich G, Simon P, Roessler A, Goswami N. Hemodynamic Responses in Lower Limb Lymphedema Patients Undergoing Physical Therapy. Biology (Basel) 2021; 10:biology10070642. [PMID: 34356497 PMCID: PMC8301048 DOI: 10.3390/biology10070642] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/05/2021] [Accepted: 07/07/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Lymphedema arises due to a malfunction of the lymphatic system, leading to extensive tissue swelling. Complete decongestive therapy (CDT), which is a physical therapy lasting for 3 weeks and includes manual lymphatic drainages (MLD), leads to fluid mobilization and increases in plasma volume. Here, we investigated hemodynamic responses induced by these fluid shifts due to CDT and MLD. METHODS Hemodynamic parameters were assessed continuously during a sit-to-stand test (5 min baseline, 5 min of standing, and 5 min of recovery). This intervention was repeated on days 1, 2, 7, 14, and 21 of CDT, before and after MLD. Volume regulatory hormones were assessed in plasma samples. RESULTS A total number of 13 patients took part in this investigation. Resting diastolic blood pressure significantly decreased over three weeks of CDT (p = 0.048). No changes in baseline values were shown due to MLD. However, MLD led to a significant decrease in heart rate during orthostatic loading over all epochs on therapy day 14, as well as day 21. Volume regulatory hormones did not show changes over lymphedema therapy. CONCLUSION We did not observe any signs of orthostatic hypotension at rest, as well as during to CDT, indicating that lymphedema patients do not display an elevated risk of orthostatic intolerance. Although baseline hemodynamics were not affected, MLD has shown to have potential beneficial effects on hemodynamic responses to a sit-to-stand test in patients undergoing lymphedema therapy.
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Affiliation(s)
- Bianca Brix
- Gravitational Physiology and Medicine Research Unit, Division of Physiology, Otto Loewi Research Center, Medical University of Graz, 8010 Graz, Austria; (B.B.); (P.S.); (A.R.)
| | - Olivier White
- Unit 1093, Cognition, Action and Sensorimotor Plasticity, Institut National de la Santé et de la Recherche Médicale, 21000 Dijon, France;
| | - Christian Ure
- Clinical Center for Lymphatic Disorders, Wolfsberg State Hospital, KABEG, 9400 Wolfsberg, Austria; (C.U.); (G.A.)
| | - Gert Apich
- Clinical Center for Lymphatic Disorders, Wolfsberg State Hospital, KABEG, 9400 Wolfsberg, Austria; (C.U.); (G.A.)
- Physical Medicine and General Rehabilitation, KABEG, Wolfsberg Site, 9400 Wolfsberg, Austria
| | - Paul Simon
- Gravitational Physiology and Medicine Research Unit, Division of Physiology, Otto Loewi Research Center, Medical University of Graz, 8010 Graz, Austria; (B.B.); (P.S.); (A.R.)
| | - Andreas Roessler
- Gravitational Physiology and Medicine Research Unit, Division of Physiology, Otto Loewi Research Center, Medical University of Graz, 8010 Graz, Austria; (B.B.); (P.S.); (A.R.)
| | - Nandu Goswami
- Gravitational Physiology and Medicine Research Unit, Division of Physiology, Otto Loewi Research Center, Medical University of Graz, 8010 Graz, Austria; (B.B.); (P.S.); (A.R.)
- Correspondence:
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Kudva AK, Raghu SV, Rao S, Venkatesh P, Hegde SK, D'souza RK, Baliga-Rao MP, Simon P, Baliga M. Indian Indigenous Fruits as Radioprotective Agents: Past, Present and Future. Anticancer Agents Med Chem 2021; 22:53-63. [PMID: 34229590 DOI: 10.2174/1871520621666210706124315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 10/21/2020] [Revised: 02/03/2021] [Accepted: 02/15/2021] [Indexed: 11/22/2022]
Abstract
Ionising radiation has been an important modality in cancer treatment and its value is immense when surgical intervention is risky or might debilitate/adversely affect the patient. However, the beneficial effect of radiation modality is negated by the damage to the adjacent healthy tissue in the field of radiation. Under these situations, the use of radioprotective compounds that can selectively protect normal tissues against radiation injury is considered very useful. However, research spanning over half a century has shown that there are no ideal radioprotectors available. The United States Food and Drug Administration (FDA or USFDA) approved amifostine or WR-2721 (Walter Reed-2721) [chemically S-2-(3-aminopropyl-amino) ethyl phosphorothioic acid] is toxic at their optimal concentrations. This has necessitated the need for agents that are safe and easily acceptable to humans. BACKGROUND Dietary agents with beneficial effects like free radical scavenging, antioxidant and immunomodulatory effects are recognized as applicable and have been investigated for their radioprotective properties. Studies in these lines have shown that the fruits of Aegle marmelos (stone apple or bael), Emblica officinalis or Phyllanthus emblica(Indian gooseberry/amla), Eugenia jambolana or Syzygium jambolana (black plum / jamun), Mangifera indica (mango) and Grewia asiatica (phalsa or falsa) that are originally reported to be indigenous to India have been investigated for their usefulness as a radioprotective agent. OBJECTIVE The objective of this review is to summarize beneficial effects of the Indian indigenous fruits stone apple, mango, Indian gooseberry, black plum, and phalsa in mitigating radiation-induced side effects, emphasize the underlying mechanism of action for the beneficial effects and address aspects that merit detail investigations for these fruits to move towards clinical application in the near future. METHODS The authors data mined in Google Scholar, PubMed, Embase, and the Cochrane Library for publications in the field from 1981 up to July 2020. The focus was on the radioprotection and the mechanism responsible for the beneficial effects, and accordingly, the articles were collated and analyzed. RESULTS This article emphasizes the usefulness of stone apple, mango, Indian gooseberry, black plum, and phalsa as radioprotective agents. From a mechanistic view, reports are suggestive that the beneficial effects are mediated by triggering free radical scavenging, antioxidant, anti-mutagenic and anti-inflammatory effects. CONCLUSION For the first time, this review addresses the beneficial effects of mango, Indian gooseberry, black plum, stone apple and phalsa as radioprotective agents. The authors suggest that future studies should be directed at understanding the selective radioprotective effects with tumor-bearing laboratory animals to understand their usefulness as radioprotective drug/s during radiotherapy and as a food supplement to protect people getting exposed to low doses of radiation in occupational settings. Phase I clinical trial studies are also required to ascertain the optimal dose and the schedule to be followed with the standardized extract of these fruits. The most important aspect is that these fruits are a part of the diet, have been consumed since the beginning of mankind, are non-toxic, possess diverse medicinal properties, have easy acceptability all of which will help take research forward and be of benefit to patients, occupational workers, agribased sectors and pharma industries.
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Affiliation(s)
| | - Shamprasad Varija Raghu
- Neurogenetics Lab, Department of Applied Zoology, Mangalore University, Mangalagangothri, Karnataka, India
| | - Suresh Rao
- Radiation Oncology, Mangalore Institute of Oncology, Mangalore, Karnataka, India
| | - Ponemone Venkatesh
- Research Unit, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka, India
| | - Sanath Kumar Hegde
- Radiation Oncology, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka, India
| | | | | | - Paul Simon
- Research Unit, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka, India
| | - Manjeshwar Baliga
- Research Unit, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka, India
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Tsurkan D, Simon P, Schimpf C, Motylenko M, Rafaja D, Roth F, Inosov DS, Makarova AA, Stepniak I, Petrenko I, Springer A, Langer E, Kulbakov AA, Avdeev M, Stefankiewicz AR, Heimler K, Kononchuk O, Hippmann S, Kaiser D, Viehweger C, Rogoll A, Voronkina A, Kovalchuk V, Bazhenov VV, Galli R, Rahimi-Nasrabadi M, Molodtsov SL, Rahimi P, Falahi S, Joseph Y, Vogt C, Vyalikh DV, Bertau M, Ehrlich H. Extreme Biomimetics: Designing of the First Nanostructured 3D Spongin-Atacamite Composite and its Application. Adv Mater 2021; 33:e2101682. [PMID: 34085323 DOI: 10.1002/adma.202101682] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/27/2021] [Indexed: 06/12/2023]
Abstract
The design of new composite materials using extreme biomimetics is of crucial importance for bioinspired materials science. Further progress in research and application of these new materials is impossible without understanding the mechanisms of formation, as well as structural features at the molecular and nano-level. It presents a challenge to obtain a holistic understanding of the mechanisms underlying the interaction of organic and inorganic phases under conditions of harsh chemical reactions for biopolymers. Yet, an understanding of these mechanisms can lead to the development of unusual-but functional-hybrid materials. In this work, a key way of designing centimeter-scale macroporous 3D composites, using renewable marine biopolymer spongin and a model industrial solution that simulates the highly toxic copper-containing waste generated in the production of printed circuit boards worldwide, is proposed. A new spongin-atacamite composite material is developed and its structure is confirmed using neutron diffraction, X-ray diffraction, high-resolution transmission electron microscopy/selected-area electron diffraction, X-ray photoelectron spectroscopy, near-edge X-ray absorption fine structure spectroscopy, and electron paramagnetic resonance spectroscopy. The formation mechanism for this material is also proposed. This study provides experimental evidence suggesting multifunctional applicability of the designed composite in the development of 3D constructed sensors, catalysts, and antibacterial filter systems.
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Affiliation(s)
- Dmitry Tsurkan
- Institut of Electronic- und Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599, Freiberg, Germany
| | - Paul Simon
- Max-Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40, 01187, Dresden, Germany
| | - Christian Schimpf
- Institute of Materials Science, TU Bergakademie Freiberg, 09599, Freiberg, Germany
| | - Mykhaylo Motylenko
- Institute of Materials Science, TU Bergakademie Freiberg, 09599, Freiberg, Germany
| | - David Rafaja
- Institute of Materials Science, TU Bergakademie Freiberg, 09599, Freiberg, Germany
| | - Friedrich Roth
- Institute of Experimental Physics, TU Bergakademie Freiberg, 09599, Freiberg, Germany
| | - Dmytro S Inosov
- Institute of Solid State and Materials Physics, TU Dresden, D-01069, Dresden, Germany
- Dresden-Würzburg Cluster of Excellence on Complexity and Topology in Quantum Matter (ct.qmat), TU Dresden, D-01062, Dresden, Germany
| | - Anna A Makarova
- Institute of Chemistry and Biochemistry, Free University of Berlin, D-14195, Berlin, Germany
| | - Izabela Stepniak
- Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, ul. Berdychowo 4, Poznan, 60-965, Poland
| | - Iaroslav Petrenko
- Institut of Electronic- und Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599, Freiberg, Germany
| | - Armin Springer
- Medizinische Biologie und Elektronenmikroskopisches Zentrum (EMZ), Strempelstraße 14, 18057, Rostock, Germany
- Universitätsmedizin Rostock, Strempelstraße 14, 18057, Rostock, Germany
| | - Enrico Langer
- Institute of Semiconductors and Microsystems, TU Dresden, 01062, Dresden, Germany
| | - Anton A Kulbakov
- Institute of Solid State and Materials Physics, TU Dresden, D-01069, Dresden, Germany
- Dresden-Würzburg Cluster of Excellence on Complexity and Topology in Quantum Matter (ct.qmat), TU Dresden, D-01062, Dresden, Germany
| | - Maxim Avdeev
- Australian Nuclear Science and Technology Organisation, New Illawarra Road, Lucas Heights, NSW, 2234, Australia
| | - Artur R Stefankiewicz
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, Poland
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
| | - Korbinian Heimler
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
| | - Olga Kononchuk
- Institute of Chemical Technology, TU Bergakademie Freiberg, Leipziger Straße 29, 09599, Freiberg, Germany
| | - Sebastian Hippmann
- Institute of Chemical Technology, TU Bergakademie Freiberg, Leipziger Straße 29, 09599, Freiberg, Germany
| | - Doreen Kaiser
- Institute of Chemical Technology, TU Bergakademie Freiberg, Leipziger Straße 29, 09599, Freiberg, Germany
| | - Christine Viehweger
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
| | - Anika Rogoll
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
| | - Alona Voronkina
- Department of Pharmacy, National Pirogov Memorial Medical University, Vinnytsia, 21018, Ukraine
| | - Valentine Kovalchuk
- Department of Pharmacy, National Pirogov Memorial Medical University, Vinnytsia, 21018, Ukraine
- Department of Microbiology, National Pirogov Memorial Medical University, Vinnytsia, 21018, Ukraine
| | | | - Roberta Galli
- Department of Medical Physics and Biomedical Engineering, Clinical Sensoring and Monitoring - Anesthesiology and Intensive Care Medicine, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307, Dresden, Germany
| | - Mehdi Rahimi-Nasrabadi
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, 1951683759, Iran
- Faculty of Pharmacy, Baqiyatallah University of Medical Sciences, Tehran, 1951683759, Iran
- Saint-Petersburg National Research University of Information Technologies, Mechanics and Optics, ITMO University, St. Petersburg, 197101, Russia
| | - Serguei L Molodtsov
- Institute of Experimental Physics, TU Bergakademie Freiberg, 09599, Freiberg, Germany
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Parvaneh Rahimi
- Institut of Electronic- und Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599, Freiberg, Germany
| | - Sedigheh Falahi
- Institut of Electronic- und Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599, Freiberg, Germany
| | - Yvonne Joseph
- Institut of Electronic- und Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599, Freiberg, Germany
| | - Carla Vogt
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
| | - Denis V Vyalikh
- Donostia International Physics Center (DIPC), Donostia-San Sebastián, 20018, Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao, 48011, Spain
| | - Martin Bertau
- Institute of Chemical Technology, TU Bergakademie Freiberg, Leipziger Straße 29, 09599, Freiberg, Germany
| | - Hermann Ehrlich
- Institut of Electronic- und Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599, Freiberg, Germany
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, Poland
- Centre for Climate Change Research, Toronto, ON, M4P 1J4, Canada
- A.R. Environmental Solutions, ICUBE-University of Toronto Mississauga, Mississauga, ON, L5L 1C6, Canada
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Horn AL, Jiang L, Washburn F, Hvitfeldt E, de la Haye K, Nicholas W, Simon P, Pentz M, Cozen W, Sood N, Conti DV. An integrated risk and epidemiological model to estimate risk-stratified COVID-19 outcomes for Los Angeles County: March 1, 2020-March 1, 2021. PLoS One 2021; 16:e0253549. [PMID: 34166416 PMCID: PMC8224896 DOI: 10.1371/journal.pone.0253549] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 06/07/2021] [Indexed: 01/08/2023] Open
Abstract
The objective of this study was to use available data on the prevalence of COVID-19 risk factors in subpopulations and epidemic dynamics at the population level to estimate probabilities of severe illness and the case and infection fatality rates (CFR and IFR) stratified across subgroups representing all combinations of the risk factors age, comorbidities, obesity, and smoking status. We focus on the first year of the epidemic in Los Angeles County (LAC) (March 1, 2020-March 1, 2021), spanning three epidemic waves. A relative risk modeling approach was developed to estimate conditional effects from available marginal data. A dynamic stochastic epidemic model was developed to produce time-varying population estimates of epidemic parameters including the transmission and infection observation rate. The epidemic and risk models were integrated to produce estimates of subpopulation-stratified probabilities of disease progression and CFR and IFR for LAC. The probabilities of disease progression and CFR and IFR were found to vary as extensively between age groups as within age categories combined with the presence of absence of other risk factors, suggesting that it is inappropriate to summarize epidemiological parameters for age categories alone, let alone the entire population. The fine-grained subpopulation-stratified estimates of COVID-19 outcomes produced in this study are useful in understanding disparities in the effect of the epidemic on different groups in LAC, and can inform analyses of targeted subpopulation-level policy interventions.
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Affiliation(s)
- Abigail L. Horn
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
| | - Lai Jiang
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
| | - Faith Washburn
- Los Angeles County Department of Public Health, Los Angeles, CA, United States of America
| | - Emil Hvitfeldt
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
| | - Kayla de la Haye
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
| | - William Nicholas
- Los Angeles County Department of Public Health, Los Angeles, CA, United States of America
| | - Paul Simon
- Los Angeles County Department of Public Health, Los Angeles, CA, United States of America
| | - Maryann Pentz
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
| | - Wendy Cozen
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
| | - Neeraj Sood
- Sol Price School of Public Policy, University of Southern California, Los Angeles, CA, United States of America
- Schaeffer Center for Health Policy and Economics, University of Southern California, Los Angeles, CA, United States of America
| | - David V. Conti
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
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Schlein J, Ebner BE, Geiger R, Simon P, Wollenek G, Moritz A, Gamillscheg A, Base E, Laufer G, Zimpfer D. Long-term outcomes after the paediatric Ross and Ross-Konno procedures. Interact Cardiovasc Thorac Surg 2021; 33:455-461. [PMID: 34128047 DOI: 10.1093/icvts/ivab093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 10/02/2020] [Revised: 01/15/2021] [Accepted: 02/05/2021] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES The Ross procedure is an attractive option for the management of aortic valve disease in paediatric patients. We reviewed our experience with the paediatric Ross procedure to determine survival and freedom from reoperation in the third decade after surgery. METHODS We reviewed the data of 124 paediatric patients [71% male, median age at time of surgery 11.1 years (interquartile range 6-14.8 years); 63.7% bicuspid aortic valve], who underwent the Ross procedure at 2 tertiary centres from April 1991 to April 2020. The Ross-Konno procedures were performed on 14 (11.3%) patients. Deaths were cross-checked with the national health insurance database, and survival status was available for 96.8% of the patients. The median follow-up time was 12.1 years (interquartile range 3-18 years). RESULTS There were 3 early and 6 late deaths. All early deaths occurred in patients aged <1 year at the time of surgery. The 25-year survival was 90.3%. Actuarial freedom from reoperation (linearized rates in parentheses) was as follows: Autograft reoperation was 90.8% (0.48%/patient-year) and right ventricular outflow tract (RVOT) reoperation was 67% (2.07%/patient year) at 25 years. The univariable Cox-proportional hazard analysis revealed younger age at time of surgery (P < 0.001), smaller implanted valve size (P < 0.001) and the use of a xenograft rather than a homograft (P < 0.001) as predictors of RVOT reoperation. At multivariable Cox-proportional hazard analysis, only age was an independent risk factor for RVOT reoperation (P = 0.041). CONCLUSIONS The Ross and the Ross-Konno procedures are associated with good outcomes in paediatric patients. Reoperation of the RVOT is frequent and associated with younger age.
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Affiliation(s)
- Johanna Schlein
- Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Barbara Elisabeth Ebner
- Division of Cardiology, Pulmonology, Allergology, and Cystic Fibrosis, Department of Pediatrics III, Innsbruck Medical University, Innsbruck, Austria
| | - Ralf Geiger
- Division of Cardiology, Pulmonology, Allergology, and Cystic Fibrosis, Department of Pediatrics III, Innsbruck Medical University, Innsbruck, Austria
| | - Paul Simon
- Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Gregor Wollenek
- Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Anton Moritz
- Department of Thoracic and Cardiovascular Surgery, Johann Wolfgang Goethe University, Frankfurt am Main, Germany
| | - Andreas Gamillscheg
- Division of Pediatric Cardiology, Department of Pediatrics, Medical University Graz, Graz, Austria
| | - Eva Base
- Division of Cardiac Thoracic Vascular Anaesthesia and Intensive Care Medicine, Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
| | - Günther Laufer
- Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Daniel Zimpfer
- Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
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Sirvent N, Suciu S, De Moerloose B, Ferster A, Mazingue F, Plat G, Yakouben K, Uyttebroeck A, Paillard C, Costa V, Simon P, Pluchart C, Poirée M, Minckes O, Millot F, Freycon C, Maes P, Hoyoux C, Cavé H, Rohrlich P, Bertrand Y, Benoit Y. CNS-3 status remains an independent adverse prognosis factor in children with acute lymphoblastic leukemia (ALL) treated without cranial irradiation: Results of EORTC Children Leukemia Group study 58951. Arch Pediatr 2021; 28:411-416. [PMID: 34034929 DOI: 10.1016/j.arcped.2021.04.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 08/30/2020] [Revised: 02/25/2021] [Accepted: 04/16/2021] [Indexed: 11/25/2022]
Abstract
AIM To evaluate the prognostic significance of initial central nervous system (CNS) involvement of children with acute lymphoblastic leukemia (ALL) enrolled in the EORTC 58951 trial. PATIENTS AND METHODS From 1998 to 2008, 1930 ALL patients were included in the randomized EORTC 58951 trial. Overall treatment intensity was adjusted according to known prognostic factors including the level of minimal residual disease after induction treatment. CNS-directed therapy comprised four to 11 courses of i.v. methotrexate (5g/m2), and 10 to 19 intrathecal chemotherapy injections, depending on risk group and CNS status. Cranial irradiation was omitted for all patients. RESULTS The overall 8-year event-free survival (EFS) and overall survival (OS) rates were 81.3% and 88.1%, respectively. In the CNS-1, TPL+, CNS-2, and CNS-3 groups, the 8-year EFS rates were 82.1%, 77.1%, 78.3%, and 57.4%, respectively. Multivariable analysis indicated that initial CNS-3 status, but not CNS-2 or TLP+, was an independent adverse predictor of outcome. The 8-year incidence of isolated CNS relapse was 1.7% and of isolated or combined CNS relapse it was 3.7%. NCI high-risk group, male sex, CNS-2 and CNS-3 status were independent predictors for a higher incidence of any CNS relapse. CONCLUSIONS CNS-3 status remains associated with poor prognosis and requires intensification of both systemic and CNS-directed therapy. This trial was registered at https://clinicaltrials.gov/under/NCT00003728.
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Affiliation(s)
- N Sirvent
- Department of Pediatric Hematology-Oncology, CHU, Montpellier, France; University Montpellier, Montpellier, France.
| | - S Suciu
- EORTC Headquarters, Brussels, Belgium
| | - B De Moerloose
- Department of Pediatric Hematology-Oncology and Stem Cell Transplantation, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - A Ferster
- Department of Pediatric Hematology-Oncology, Children's University Hospital Queen Fabiola, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - F Mazingue
- Department of Pediatric Hematology-Oncology, CHRU, Lille, France
| | - G Plat
- Department of Pediatric Hematology-Oncology, CHU-Hôpital Purpan, Toulouse, France
| | - K Yakouben
- Department of Pediatric Hematology, Robert-Debré Hospital, AP-HP, Paris, France
| | - A Uyttebroeck
- Department of Pediatric Hematology-Oncology, University Hospital Gasthuisberg, Leuven, Belgium
| | - C Paillard
- Department of Pediatric Hematology-Oncology, University Hospital Hautepierre, Strasbourg, France
| | - V Costa
- Department of Pediatrics, Portuguese Oncology Institute, Porto, Portugal
| | - P Simon
- Pediatric Hematology Unit, CHU Jean-Minjoz Hospital, Besançon, France
| | - C Pluchart
- Department of Pediatric Hematology-Oncology, American Memorial Hospital, Reims, France
| | - M Poirée
- Department of Pediatric Hematology-Oncology, CHU Nice, Nice, France
| | - O Minckes
- Department of Pediatric Hematology-Oncology, CHU, Caen, France
| | - F Millot
- Pediatric Oncology Unit, University Hospital, Poitiers, France
| | - C Freycon
- Department of Pediatric Oncology, University Hospital, Grenoble, France
| | - P Maes
- Department of Pediatrics, University Hospital Antwerp, Antwerp, Belgium
| | - C Hoyoux
- Department of Pediatrics, CHR de la Citadelle, Liège, Belgium
| | - H Cavé
- Department of Genetics, Assistance publique-Hôpitaux de Paris (AP-HP), Robert-Debré Hospital, Paris, France; INSERM UMR 1131, University Institute of Hematology, University Paris-Diderot, Paris Sorbonne Cité, Paris, France
| | - P Rohrlich
- Department of Pediatric Hematology-Oncology, CHU Nice, Nice, France
| | - Y Bertrand
- Institute of Pediatric Hematology and Oncology (IHOP), Hospices Civils de Lyon, University Lyon 1, Lyon, France
| | - Y Benoit
- Department of Pediatric Hematology-Oncology and Stem Cell Transplantation, Ghent University Hospital, Ghent University, Ghent, Belgium
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Simon P, Pompe W, Bobeth M, Worch H, Kniep R, Formanek P, Hild A, Wenisch S, Sturm E. Podosome-Driven Defect Development in Lamellar Bone under the Conditions of Senile Osteoporosis Observed at the Nanometer Scale. ACS Biomater Sci Eng 2021; 7:2255-2267. [PMID: 33938726 PMCID: PMC8290401 DOI: 10.1021/acsbiomaterials.0c01493] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The degradation mechanism of human trabecular bone harvested from the central part of the femoral head of a patient with a fragility fracture of the femoral neck under conditions of senile osteoporosis was investigated by high-resolution electron microscopy. As evidenced by light microscopy, there is a disturbance of bone metabolism leading to severe and irreparable damages to the bone structure. These defects are evoked by osteoclasts and thus podosome activity. Podosomes create typical pit marks and holes of about 300-400 nm in diameter on the bone surface. Detailed analysis of the stress field caused by the podosomes in the extracellular bone matrix was performed. The calculations yielded maximum stress in the range of few megapascals resulting in formation of microcracks around the podosomes. Disintegration of hydroxyapatite and free lying collagen fibrils were observed at the edges of the plywood structure of the bone lamella. At the ultimate state, the disintegration of the mineralized collagen fibrils to a gelatinous matrix comes along with a delamination of the apatite nanoplatelets resulting in a brittle, porous bone structure. The nanoplatelets aggregate to big hydroxyapatite plates with a size of up to 10 x 20 μm2. The enhanced plate growth can be explained by the interaction of two mechanisms in the ruffled border zone: the accumulation of delaminated hydroxyapatite nanoplatelets near clusters of podosomes and the accelerated nucleation and random growth of HAP nanoplatelets due to a nonsufficient concentration of process-directing carboxylated osteocalcin cOC.
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Affiliation(s)
- Paul Simon
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, Germany
| | - Wolfgang Pompe
- Technical University of Dresden, Institute of Materials Science, 01069 Dresden, Germany
| | - Manfred Bobeth
- Technical University of Dresden, Institute of Materials Science, 01069 Dresden, Germany
| | - Hartmut Worch
- Technical University of Dresden, Institute of Materials Science, 01069 Dresden, Germany
| | - Rüdiger Kniep
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, Germany
| | - Petr Formanek
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany
| | - Anne Hild
- Clinical Anatomy, Clinic of Small Animals, Justus-Liebig-University, 35385 Giessen, Germany
| | - Sabine Wenisch
- Clinical Anatomy, Clinic of Small Animals, Justus-Liebig-University, 35385 Giessen, Germany
| | - Elena Sturm
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, Germany.,University of Konstanz, Physical Chemistry, POB 714, D-78457 Konstanz, Germany
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Kalekhan F, Kudva AK, Raghu SV, Rao S, Hegde SK, Simon P, Baliga MS. Traditionally Used Natural Products in Preventing Ionizing Radiation-Induced Dermatitis: First Review on the Clinical Studies. Anticancer Agents Med Chem 2021; 22:64-82. [PMID: 33820524 DOI: 10.2174/1871520621666210405093236] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 10/21/2020] [Revised: 12/16/2020] [Accepted: 01/15/2021] [Indexed: 11/22/2022]
Abstract
In the treatment of cancer, the use of ionizing radiation is an important modality. However, on the downside, radiation, when used for curative purposes, causes acute dermatitis or radiodermatitis at the site of radiation in most individuals. From a clinical viewpoint, severe dermatitis causes a burning and itching sensation is very painful, and severely affects the quality of life of the individual undergoing treatment. In worse situations, acute radiation dermatitis can cause gaps or breaks in the planned treatment and this can adversely affect the treatment objective and outcome. BACKGROUND In various traditional and folk systems of medicine, plants and plant products have been used since time immemorial for treating various skin ailments. Further, many cosmeceutical creams formulated based on knowledge from ethnomedicinal use are marketed and used to treat various ailments. In the current review, an attempt is made at summarizing the beneficial effects of some plants and plant products in mitigating acute radiation dermatitis in humans undergoing curative radiotherapy. Additionally, the emphasis is also placed on the mechanism/s responsible for the beneficial effects. OBJECTIVE The objective of this review is to summarize the clinical observations on the prevention of radiodermatitis by plant products. In this review, the protective effects of Adlay (Coix lachryma-jobi L.) bran extract, Aloe vera, Calendula officinalis, Cucumis sativus, green tea constituent the epigallocatechin-3-gallate, honey, Achillea millefolium, Matricaria chamomilla, olive oil and some polyherbal creams are addressed by also addressing on the mechanism of action for the beneficial effects. METHODS Two authors' data mined for information in Google Scholar, PubMed, Embase and the Cochrane Library for publications in the field from 1901 up to July 2020. The focus was on acute radiation dermatitis, ionizing radiation, curative radiotherapy, human cancer. The articles were collected and analyzed. RESULTS For the first time, this review addresses the usefulness of natural products like adlay bran, Aloe vera, Calendula officinalis, Cucumis sativus, green tea constituent the epigallocatechin-3-gallate, honey, Achillea millefolium, Matricaria chamomilla, olive oil and some experimentally constituted and commercially available polyherbal creams as skincare agents against the deleterious effects of ionizing radiation on the skin. The protective effects are possibly due to the free radical scavenging, antioxidant, anti-inflammatory, wound healing and skin protective effects. CONCLUSION The authors suggest that these plants have been used since antiquity as medicinal agents and require in-depth investigation with both clinical and preclinical validated models of study. The results of these studies will be extremely useful to cancer patients requiring curative radiotherapy, the dermatology fraternity, agro-based and pharmaceutical sectors at large.
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Affiliation(s)
- Faizan Kalekhan
- Research Unit, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka. India
| | - Avinash K Kudva
- Department of Biochemistry, Mangalore University, Mangalagangotri, Karnataka. India
| | - Shamprasad V Raghu
- Neurogenetics Laboratory, Department of Applied Zoology, Mangalore University, Mangalagangotri, Karnataka. India
| | - Suresh Rao
- Radiation Oncology, Mangalore Institute of Oncology, Mangalore, Karnataka. India
| | - Sanath K Hegde
- Radiation Oncology, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka. India
| | - Paul Simon
- Research Unit, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka. India
| | - Manjeshwar S Baliga
- Research Unit, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka. India
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Pirak J, Brandeisky JA, Simon P, Khaladj M. Elastofibroma in the Rearfoot: A Case Report of a Rare Soft Tissue Tumor. J Foot Ankle Surg 2021; 59:587-589. [PMID: 32354514 DOI: 10.1053/j.jfas.2019.09.021] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 09/15/2019] [Accepted: 09/18/2019] [Indexed: 02/03/2023]
Abstract
An elastofibroma is a rare, benign, slow-growing, progressive soft tissue neoplasm with distinct histopathological features consisting of collagen and coarse elastic fibers. When it occurs, it has a propensity for the subscapular region in elderly female patients. It can occur less commonly at other anatomical sites, and its exact etiology is unclear. The incidence of elastofibroma, especially in the foot, has been sporadically reported; however, the presentation of elastofibroma in the rearfoot has not been previously described in the literature. We present the first report of a 79-year-old female presenting with plantar heel pain secondary to an elastofibroma found at the insertion of the plantar fascia into the calcaneal tuberosity. The patient underwent surgical excision, and pathological analysis revealed the diagnosis of elastofibroma. We discuss the peculiar manifestation of elastofibroma in this case, the pathological diagnosis, and a review of the literature.
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Affiliation(s)
- Jonathan Pirak
- Resident, Trinitas Regional Medical Center, Elizabeth, NJ.
| | | | - Paul Simon
- Medical Director, Pathology, CentraState Medical Center, Freehold, NJ
| | - Morteza Khaladj
- Residency Director and Chief of Podiatry, Trinitas Regional Medical Center, Elizabeth, NJ
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Baliga MS, Rao S, Hegde SK, Rao P, Simon P, George T, Venkatesh P, Baliga-Rao MP, Thilakchand KR. Usefulness of Honey as an Adjunct in the Radiation Treatment for Head and Neck Cancer: Emphasis on Pharmacological and Mechanism/s of Actions. Anticancer Agents Med Chem 2021; 22:20-29. [PMID: 33573581 DOI: 10.2174/1871520621666210126094509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 04/30/2020] [Revised: 07/13/2020] [Accepted: 07/19/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND In the treatment of head and neck cancer (HNC), ionizing radiation is an important modality in achieving curative objectives. However, the effective use of radiation is compromised by the side effects resulting from the damage to the adjacent normal tissue. Preclinical studies carried out in the recent past have shown that the age old dietary agent honey, which also possess myriad medicinal use is beneficial in mitigating diverse radiation-induced side effects like mucositis, xerostomia, fatigue, weight loss and to promote healing of refractory wounds. OBJECTIVE The objective of this memoir is to review the beneficial effects of honey in mitigating radiation-induced side effects in HNC and to emphasize on the underlying mechanism of action for the beneficial effects Methods: Two authors searched Google Scholar, PubMed, Embase, and the Cochrane Library for publications up to December 2019 to assess the ability of honey in reducing the severity of radiation-induced ill effects in the treatment of HNC. Subsequently, the adjunct pharmacological effects and mechanism/s responsible were also searched for and appropriately used to substantiate the underlying mechanism/s of action for the beneficial effects. RESULTS The existing data is suggestive that honey is beneficial in mitigating the radiation-induced mucositis, xerostomia, healing of recalcitrant wounds in radiation exposed regions and multiple pathways mediate the beneficial effects especially, free radical scavenging, antioxidant, wound healing, anticancer, analgesic, anti-inflammatory, anabolic, anti-fatigue and anti-anaemic effects that add additional value to the use of honey as an adjunct in cancer therapy. CONCLUSION For the first time this review addresses the underlying pharmacological effects related to the beneficial effects of honey in radiation-induced damage, and attempts at emphasizes the lacunae that need further studies for optimizing the use of honey as an adjunct in radiotherapy of HNC. The authors suggest that future studies should be directed at understanding the detail molecular mechanisms responsible for the beneficial effects using validated cell culture and animal models of study. Large multi centric clinical trials with standardised honey is also needed to understand the clinical use of honey.
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Affiliation(s)
- Manjeshwar S Baliga
- Research Unit, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka. India
| | - Suresh Rao
- Radiation Oncology, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka. India
| | - Sanath K Hegde
- Radiation Oncology, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka. India
| | - Pratima Rao
- Department of Orodental Pathology, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka. India
| | - Paul Simon
- Research Unit, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka. India
| | - Thomas George
- Research Unit, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka. India
| | - Ponemone Venkatesh
- Research Unit, Mangalore Institute of Oncology, Pumpwell, Mangalore, Karnataka. India
| | | | - Karadka R Thilakchand
- Department of Anesthesiology, Karnataka Institute of Medical Sciences, Hubballi 580022. India
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Schlein J, Wiedemann D, Gabriel H, Wollenek G, Simon P, Michel-Behnke I, Laufer G, Zimpfer D. Long-Term Outcomes after Aortic Valve Repair in Pediatric Patients. Thorac Cardiovasc Surg 2021. [DOI: 10.1055/s-0041-1725735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Rao S, Simon P, Fernandes D, Athiyamaan MS, Vidyasagar MS, Shankar S, Muhsina V, Sheeba S. Dosimetric parameters predicting radiation-induced oral mucositis in head-and-neck cancers in two intensity-modulated radiation therapy protocols: A retrospective analytical study. J Radiat Cancer Res 2021. [DOI: 10.4103/jrcr.jrcr_65_20] [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: 11/04/2022] Open
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Horn AL, Jiang L, Washburn F, Hvitfeldt E, de la Haye K, Nicholas W, Simon P, Pentz M, Cozen W, Sood N, Conti DV. Estimation of COVID-19 risk-stratified epidemiological parameters and policy implications for Los Angeles County through an integrated risk and stochastic epidemiological model. medRxiv 2020:2020.12.11.20209627. [PMID: 33367291 PMCID: PMC7756248 DOI: 10.1101/2020.12.11.20209627] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Background Health disparities have emerged with the COVID-19 epidemic because the risk of exposure to infection and the prevalence of risk factors for severe outcomes given infection vary within and between populations. However, estimated epidemic quantities such as rates of severe illness and death, the case fatality rate (CFR), and infection fatality rate (IFR), are often expressed in terms of aggregated population-level estimates due to the lack of epidemiological data at the refined subpopulation level. For public health policy makers to better address the pandemic, stratified estimates are necessary to investigate the potential outcomes of policy scenarios targeting specific subpopulations. Methods We develop a framework for using available data on the prevalence of COVID-19 risk factors (age, comorbidities, BMI, smoking status) in subpopulations, and epidemic dynamics at the population level and stratified by age, to estimate subpopulation-stratified probabilities of severe illness and the CFR (as deaths over observed infections) and IFR (as deaths over estimated total infections) across risk profiles representing all combinations of risk factors including age, comorbidities, obesity class, and smoking status. A dynamic epidemic model is integrated with a relative risk model to produce time-varying subpopulation-stratified estimates. The integrated model is used to analyze dynamic outcomes and parameters by population and subpopulation, and to simulate alternate policy scenarios that protect specific at-risk subpopulations or modify the population-wide transmission rate. The model is calibrated to data from the Los Angeles County population during the period March 1 - October 15 2020. Findings We estimate a rate of 0.23 (95% CI: 0.13,0.33) of infections observed before April 15, which increased over the epidemic course to 0.41 (0.11,0.69). Overall population-average IFR( t ) estimates for LAC peaked at 0.77% (0.38%,1.15%) on May 15 and decreased to 0.55% (0.24%,0.90%) by October 15. The population-average IFR( t ) stratified by age group varied extensively across subprofiles representing each combination of the additional risk factors considered (comorbidities, BMI, smoking). We found median IFRs ranging from 0.009%-0.04% in the youngest age group (0-19), from 0.1%-1.8% for those aged 20-44, 0.36%-4.3% for those aged 45-64, and 1.02%-5.42% for those aged 65+. In the group aged 65+ for which the rate of unobserved infections is likely much lower, we find median CFRs in the range 4.4%-23.45%. The initial societal lockdown period avoided overwhelming healthcare capacity and greatly reduced the observed death count. In comparative scenario analysis, alternative policies in which the population-wide transmission rate is reduced to a moderate and sustainable level of non-pharmaceutical interventions (NPIs) would not have been sufficient to avoid overwhelming healthcare capacity, and additionally would have exceeded the observed death count. Combining the moderate NPI policy with stringent protection of the at-risk subpopulation of individuals 65+ would have resulted in a death count similar to observed levels, but hospital counts would have approached capacity limits. Interpretation The risk of severe illness and death of COVID-19 varies tremendously across subpopulations and over time, suggesting that it is inappropriate to summarize epidemiological parameters for the entire population and epidemic time period. This includes variation not only across age groups, but also within age categories combined with other risk factors analyzed in this study (comorbidities, obesity status, smoking). In the policy analysis accounting for differences in IFR across risk groups in comparing the control of infections and protection of higher risk groups, we find that the strict initial lockdown period in LAC was effective because it both reduced overall transmission and protected individuals at greater risk, resulting in preventing both healthcare overload and deaths. While similar numbers of deaths as observed in LAC could have been achieved with a more moderate NPI policy combined with greater protection of individuals 65+, this would have come at the expense of overwhelming the healthcare system. In anticipation of a continued rise in cases in LAC this winter, policy makers need to consider the trade offs of various policy options on the numbers of the overall population that may become infected, severely ill, and that die when considering policies targeted at subpopulations at greatest risk of transmitting infection and at greatest risk for developing severe outcomes.
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Affiliation(s)
- V. Anaf
- From the Departments of Obstetrics & Gynaecology, Hopital Erasme, Universite Libre de Bruxelles, Brussels, Belgium
| | - J. C. Noël
- From the Departments of Pathology, Hopital Erasme, Universite Libre de Bruxelles, Brussels, Belgium
| | - J. P. Thys
- From the Departments of Infectious Disease, Hopital Erasme, Universite Libre de Bruxelles, Brussels, Belgium
| | - P. Simon
- From the Departments of Obstetrics & Gynaecology, Hopital Erasme, Universite Libre de Bruxelles, Brussels, Belgium
| | - F. Buxant
- From the Departments of Obstetrics & Gynaecology, Hopital Erasme, Universite Libre de Bruxelles, Brussels, Belgium
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Shahabi S, Tecco L, Jani J, Pirotte B, Rodesch G, Baurain M, Simon P, Masters L, Rodesch F. Management of a Ruptured Basilar Artery Aneurysm During Pregnancy. Acta Chir Belg 2020. [DOI: 10.1080/00015458.2001.12098615] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. Shahabi
- Service de Gynecologie-Obstetrique, Hôpital Erasme, Université Libre de Bruxelles (ULB), Belgique
| | - L. Tecco
- Service de Gynécologie-Obstétrique, Hôpital Brugmann, Université Libre de Bruxelles (ULB), Belgique
| | - J. Jani
- Service de Gynécologie-Obstétrique, Hôpital Brugmann, Université Libre de Bruxelles (ULB), Belgique
| | - B. Pirotte
- Service de Neurochirurgie, Hôpital Erasme, Université Libre de Bruxelles (ULB), Belgique
| | - G. Rodesch
- Clinique de Neuroradiologie, Hôpital Erasme (ULB), Belgique et Service de Neuroradiologie, Hôpital Bicêtre, Le Kremlin-Bicêtre, France
| | - M. Baurain
- Service d’Anesthesiologie, Hôpital Erasme, Université Libre de Bruxelles (ULB), Belgique
| | - P. Simon
- Service de Gynecologie-Obstetrique, Hôpital Erasme, Université Libre de Bruxelles (ULB), Belgique
| | - L. Masters
- Service de Gynécologie-Obstétrique, Hôpital de Braine-l’Alleud-Waterloo, Belgium
| | - F. Rodesch
- Service de Gynecologie-Obstetrique, Hôpital Erasme, Université Libre de Bruxelles (ULB), Belgique
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Jornet N, Valverde I, Espinosa N, Latorre-Mussoll A, Carrasco de Fez P, Delgado P, Perez-Alija J, Gallego P, Ruiz A, Adria M, Simon P, Ribas Morales M. PO-1365: EPID 2D transit In Vivo Dosimetry: Can relevant anatomy and positioning differences be detected? Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01384-0] [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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Bonné E, Daxhelet M, Simon P, Marmol V, Suppa M. The peculiar dermoscopic features of primary umbilical endometriosis. J Eur Acad Dermatol Venereol 2020; 34:e589-e591. [DOI: 10.1111/jdv.16455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- E. Bonné
- Department of Dermatology and Venerology Hôpital Erasme Université Libre de Bruxelles Brussels Belgium
| | - M. Daxhelet
- Department of Dermatology and Venerology Hôpital Erasme Université Libre de Bruxelles Brussels Belgium
| | - P. Simon
- Department of Obstetrics and Gynecology Hôpital ErasmeUniversité Libre de Bruxelles Brussels Belgium
| | - V. Marmol
- Department of Dermatology and Venerology Hôpital Erasme Université Libre de Bruxelles Brussels Belgium
| | - M. Suppa
- Department of Dermatology and Venerology Hôpital Erasme Université Libre de Bruxelles Brussels Belgium
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