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Cartus AT, Lachenmeier DW, Guth S, Roth A, Baum M, Diel P, Eisenbrand G, Engeli B, Hellwig M, Humpf HU, Joost HG, Kulling SE, Lampen A, Marko D, Steinberg P, Wätjen W, Hengstler JG, Mally A. Acetaldehyde as a Food Flavoring Substance: Aspects of Risk Assessment. Mol Nutr Food Res 2023; 67:e2200661. [PMID: 37840378 DOI: 10.1002/mnfr.202200661] [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: 09/28/2022] [Revised: 05/31/2023] [Indexed: 10/17/2023]
Abstract
The Senate Commission on Food Safety (SKLM) of the German Research Foundation (DFG) has reviewed the currently available data in order to assess the health risks associated with the use of acetaldehyde as a flavoring substance in foods. Acetaldehyde is genotoxic in vitro. Following oral intake of ethanol or inhalation exposure to acetaldehyde, systemic genotoxic effects of acetaldehyde in vivo cannot be ruled out (induction of DNA adducts and micronuclei). At present, the key question of whether acetaldehyde is genotoxic and mutagenic in vivo after oral exposure cannot be answered conclusively. There is also insufficient data on human exposure. Consequently, it is currently not possible to reliably assess the health risk associated with the use of acetaldehyde as a flavoring substance. However, considering the genotoxic potential of acetaldehyde as well as numerous data gaps that need to be filled to allow a comprehensive risk assessment, the SKLM considers that the use of acetaldehyde as a flavoring may pose a safety concern. For reasons of precautionary consumer protection, the SKLM recommends that the scientific base for approval of the intentional addition of acetaldehyde to foods as a flavoring substance should be reassessed.
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Affiliation(s)
| | - Dirk W Lachenmeier
- Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Weißenburger Str. 3, 76187, Karlsruhe, Germany
| | - Sabine Guth
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr, 67, 44139, Dortmund, Germany
| | - Angelika Roth
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr, 67, 44139, Dortmund, Germany
| | - Matthias Baum
- Solenis Germany Industries GmbH, Fütingsweg 20, 47805, Krefeld, Germany
| | - Patrick Diel
- Department of Molecular and Cellular Sports Medicine, Institute of Cardiovascular Research and Sports Medicine, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| | | | - Barbara Engeli
- Federal Food Safety and Veterinary Office (FSVO), Risk Assessment Division, Schwarzenburgstrasse 155, Bern, 3003, Switzerland
| | - Michael Hellwig
- Chair of Special Food Chemistry, Technische Universität Dresden, Bergstraße 66, 01062, Dresden, Germany
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 45, 48149, Münster, Germany
| | - Hans-Georg Joost
- Department of Experimental Diabetology, German Institute of Human Nutrition (DIfE), Arthur-Scheunert-Allee 114-116, 14558, Nuthetal, Germany
| | - Sabine E Kulling
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Haid-und-Neu-Straße 9, 76131, Karlsruhe, Germany
| | - Alfonso Lampen
- Risk Assessment Strategies, Bundesinstitut für Risikobewertung (BfR), Max-Dohrn-Straße 8-10, Berlin, Germany
| | - Doris Marko
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Währinger Straße 38, Vienna, 1090, Austria
| | - Pablo Steinberg
- Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Haid-und-Neu-Str. 9, 76131, Karlsruhe, Germany
| | - Wim Wätjen
- Institut für Agrar- und Ernährungswissenschaften, Martin-Luther-Universität Halle-Wittenberg, Weinbergweg 22, 06120, Halle (Saale), Germany
| | - Jan G Hengstler
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr, 67, 44139, Dortmund, Germany
| | - Angela Mally
- Department of Toxicology, University of Würzburg, Versbacher Str. 9, 97078, Würzburg, Germany
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Guth S, Baum M, Cartus AT, Diel P, Engel KH, Engeli B, Epe B, Grune T, Haller D, Heinz V, Hellwig M, Hengstler JG, Henle T, Humpf HU, Jäger H, Joost HG, Kulling SE, Lachenmeier DW, Lampen A, Leist M, Mally A, Marko D, Nöthlings U, Röhrdanz E, Roth A, Spranger J, Stadler R, Steinberg P, Vieths S, Wätjen W, Eisenbrand G. Evaluation of the genotoxic potential of acrylamide: Arguments for the derivation of a tolerable daily intake (TDI value). Food Chem Toxicol 2023; 173:113632. [PMID: 36708862 DOI: 10.1016/j.fct.2023.113632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/09/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023]
Abstract
This opinion of the Senate Commission on Food Safety (SKLM) of the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) presents arguments for an updated risk assessment of diet-related exposure to acrylamide (AA), based on a critical review of scientific evidence relevant to low dose exposure. The SKLM arrives at the conclusion that as long as an appropriate exposure limit for AA is not exceeded, genotoxic effects resulting in carcinogenicity are unlikely to occur. Based on the totality of the evidence, the SKLM considers it scientifically justified to derive a tolerable daily intake (TDI) as a health-based guidance value.
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Affiliation(s)
- Sabine Guth
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr. 67, 44139, Dortmund, Germany.
| | - Matthias Baum
- Solenis Germany Industries GmbH, Fütingsweg 20, 47805 Krefeld, Germany.
| | | | - Patrick Diel
- Department of Molecular and Cellular Sports Medicine, Institute of Cardiovascular Research and Sports Medicine, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany.
| | - Karl-Heinz Engel
- Technical University of Munich, Maximus-von-Imhof-Forum 2, 85354, Freising, Germany.
| | - Barbara Engeli
- Federal Food Safety and Veterinary Office (FSVO), Risk Assessment Division, Schwarzenburgstrasse 155, 3003, Bern, Switzerland.
| | - Bernd Epe
- Institute of Pharmaceutical and Biomedical Sciences, University of Mainz, Staudinger Weg 5, 55128, Mainz, Germany.
| | - Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition (DIfE), Arthur-Scheunert-Allee 114-116, 14558, Nuthetal, Germany.
| | - Dirk Haller
- ZIEL - Institute for Food & Health, Technical University of Munich, 85354, Freising, Germany; Technical University of Munich, Gregor-Mendel-Str. 2, 85354, Freising, Germany.
| | - Volker Heinz
- German Institute of Food Technologies (DIL), Prof.-von-Klitzing-Str. 7, 49610, Quakenbrück, Germany.
| | - Michael Hellwig
- Technische Universität Dresden, Bergstraße 66, 01062, Dresden, Germany.
| | - Jan G Hengstler
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr. 67, 44139, Dortmund, Germany.
| | - Thomas Henle
- Department of Food Chemistry, TU Dresden, Bergstrasse 66, 01062, Dresden, Germany.
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 45, 48149, Münster, Germany.
| | - Henry Jäger
- Institute of Food Technology, University of Natural Resources and Life Sciences (BOKU), Muthgasse 18, 1190, Vienna, Austria.
| | - Hans-Georg Joost
- Department of Experimental Diabetology, German Institute of Human Nutrition (DIfE), Arthur-Scheunert-Allee 114-116, 14558, Nuthetal, Germany.
| | - Sabine E Kulling
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Haid-und-Neu-Straße 9, 76131, Karlsruhe, Germany.
| | - Dirk W Lachenmeier
- Chemisches und Veterinäruntersuchungsamt Karlsruhe, Weißenburger Str. 3, 76187, Karlsruhe, Germany.
| | - Alfonso Lampen
- University of Veterinary Medicine Hannover, Institute for Food Quality and Food Safety, Bischofsholer Damm 15, 30173, Hannover, Germany.
| | - Marcel Leist
- In Vitro Toxicology and Biomedicine, Department Inaugurated By the Doerenkamp-Zbinden Foundation, University of Konstanz, Box 657, 78457, Konstanz, Germany.
| | - Angela Mally
- Department of Toxicology, University of Würzburg, Versbacher Str. 9, 97078, Würzburg, Germany.
| | - Doris Marko
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Währinger Straße 38, 1090, Vienna, Austria.
| | - Ute Nöthlings
- Department of Nutrition and Food Sciences, Nutritional Epidemiology, Rheinische Friedrich-Wilhelms University Bonn, Friedrich-Hirzebruch-Allee 7, 53115, Bonn, Germany.
| | - Elke Röhrdanz
- Unit Reproductive and Genetic Toxicology, Federal Institute for Drugs and Medical Devices (BfArM), Kurt-Georg-Kiesinger Allee 3, 53175, Bonn, Germany.
| | - Angelika Roth
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr. 67, 44139, Dortmund, Germany.
| | - Joachim Spranger
- Department of Endocrinology and Metabolic Medicine, Campus Benjamin Franklin, Charité University Medicine, Hindenburgdamm 30, 12200, Berlin, Germany.
| | - Richard Stadler
- Institute of Food Safety and Analytical Sciences, Nestlé Research Centre, Route du Jorat 57, 1000, Lausanne, 26, Switzerland.
| | - Pablo Steinberg
- Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Haid-und-Neu-Str. 9, 76131, Karlsruhe, Germany.
| | - Stefan Vieths
- Paul-Ehrlich-Institut, Paul-Ehrlich-Straße 51-59, 63225, Langen, Germany.
| | - Wim Wätjen
- Institut für Agrar- und Ernährungswissenschaften, Martin-Luther-Universität Halle-Wittenberg, Weinbergweg 22, 06120, Halle (Saale), Germany.
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Baum M, Hubner Benz S. What Predicts Effectuation Preferences Disentangling Individual and Environmental Factors and Illuminating Decision Criteria. IJEV 2023. [DOI: 10.1504/ijev.2023.10053788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Benz SH, Baum M. What predicts effectuation preferences Disentangling individual and environmental factors and illuminating decision criteria. IJEV 2023. [DOI: 10.1504/ijev.2023.129283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Rabl T, Petzsche V, Baum M, Franzke S. Can support by digital technologies stimulate intrapreneurial behaviour? The moderating role of management support for innovation and intrapreneurial self‐efficacy. Information Systems Journal 2022. [DOI: 10.1111/isj.12413] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tanja Rabl
- Chair of Human Resource Management, Leadership, and Organization Technische Universität Kaiserslautern Kaiserslautern Germany
| | - Valentin Petzsche
- Chair of Human Resource Management, Leadership, and Organization Technische Universität Kaiserslautern Kaiserslautern Germany
| | - Matthias Baum
- Chair of Entrepreneurship and Digital Business Models University of Bayreuth Bayreuth Germany
| | - Sonja Franzke
- Chair of Entrepreneurship and Digital Business Models University of Bayreuth Bayreuth Germany
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Hourvitz A, Kedem A, Avraham S, Gidoni Y, Barkat J, Yerushalmi G, Baruchin O, Gat I, Baum M, Maman E, Youngster M. P-634 Safety of ART cycles with extremely high estradiol levels - A retrospective cohort study. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.583] [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: 11/15/2022] Open
Abstract
Abstract
Study question
Are IVF treatments with extremely high peak estradiol levels during ovarian hyperstimulation associated with higher complication rates?
Summary answer
Extremely high estradiol levels were not associated with higher major complication rates, but patients were more likely to seek medical care following retrieval.
What is known already
The freeze-all policy and the increasing popularity of social oocyte freezing, have led to an increase in gonadotropin doses and number of oocytes retrieved and, as a direct effect, higher estradiol levels. Studies reporting major ART complications (OHSS, bleeding, infection, torsion, thromboembolic events) are based on heterogeneous patient populations without stratification by oocyte number or estradiol levels, except for a single study reporting an association between peak estradiol levels and the risk of ovarian torsion. Extreme estradiol levels, are associated with larger ovaries, repeated ovarian punctures, and possibly a thrombogenic effect. Therefore, higher complication rates can be expected.
Study design, size, duration
A retrospective cohort study including patients from two large medical centers treated between 2019-2021.
Participants/materials, setting, methods
A study group (239 patients) with extremely high peak estradiol levels (>20,000 pmol/L on the day of ovulation induction, or > 15,000 pmol/L on the previous day) and a control group (208 patients) with normal range estradiol levels (3000-12000pmol/L), treated at two large units were included. Patients were surveyed about complaints and medical care related to ovum pick up (OPU), and medical files were reviewed. Complication rates and the need for medical assistance were compared.
Main results and the role of chance
Several differences between the study and control group were observed as a consequence of the study design: Mean age was 33.01±5.14 vs. 34.57±4.52 (p = 0.01), Mean peak estradiol levels was 26645.34±8592.56 vs.7229.750±2329.20 (p < 0.001), mean number of oocytes were 27.55±13.46 vs. 11.63±5.77 (p < 0.001) for the study and control group respectivly. More patients in the control group underwent fertility preservation. Mean FSH levels and total gonadotropin dosage were higher in the control group. Major complications [3 (1.25%) in the study group vs. 1 (0.96%) in the control group] were similar between groups (p = 0.62). In the study group Two patients were diagnosed with ovarian torsion (0.83%), and one (0.41%) with early severe OHSS as a result of a positive BhCG related to an undiagnosed pregnancy prior to OPU. All three were admitted (1.25%). In the control group one patient was diagnosed with PID requiring inpatient IV antibiotic treatment (0.48%). One more patient was admitted with severe abdominal pain following OPU, for a total of 2 admissions (0.96%) (p = 1). 33 patients (13.8%) in the study group and 10 (4.8%) in the control group sought medical care after OPU, mostly due to abdominal pain, without further workup or hospitalization (p = 0.001).
Limitations, reasons for caution
A retrospective study with possible recall bias. Major adverse events are rare in IVF and may not be fully captured in the study population.
Wider implications of the findings
Based on our results, extremely high estradiol levels during ovarian hyperstimulation were not associated with thromboembolic events, higher major complication or hospitalization rates, thus may be considered safe. Nevertheless, patients may be informed of possible higher rates of discomfort, mostly abdominal pain. Larger studies are warranted to confirm our results.
Trial registration number
0090-21-ASF
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Affiliation(s)
- A Hourvitz
- Shamir Medical Center Assaf Harofeh, IVF Unit , Beer Yaakov, Israel
| | - A Kedem
- Shamir Medical Center Assaf Harofeh, IVF Unit , Beer Yaakov, Israel
| | - S Avraham
- Shamir Medical Center Assaf Harofeh, IVF Unit , Beer Yaakov, Israel
| | - Y Gidoni
- Shamir Medical Center Assaf Harofeh, IVF Unit , Beer Yaakov, Israel
| | - J Barkat
- Shamir Medical Center Assaf Harofeh, IVF Unit , Beer Yaakov, Israel
| | - G Yerushalmi
- Shamir Medical Center Assaf Harofeh, IVF Unit , Beer Yaakov, Israel
| | - O Baruchin
- Shamir Medical Center Assaf Harofeh, IVF Unit , Beer Yaakov, Israel
| | - I Gat
- Shamir Medical Center Assaf Harofeh, IVF Unit , Beer Yaakov, Israel
| | - M Baum
- Hertzelia Medical Center- Israel, IVF Unit , Hertzelia, Israel
| | - E Maman
- Hertzelia Medical Center- Israel, IVF Unit , Hertzelia, Israel
| | - M Youngster
- Shamir Medical Center Assaf Harofeh, IVF Unit , Beer Yaakov, Israel
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Avraham S, Kedem A, Zur H, Youngster M, Yaakov O, Yerushalmi G, Gat I, Gidoni Y, Baum M, Hourvitz A, Maman E. P-710 COVID-19 Vaccination and Infertility Treatment Outcomes. Hum Reprod 2022. [PMCID: PMC9384403 DOI: 10.1093/humrep/deac105.142] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Study question Is there an influence of mRNA COVID-19 vaccine on ovarian response and in vitro fertilization (IVF) treatment outcomes? Summary answer COVID-19 mRNA vaccine did not affect the ovarian response nor pregnancy rates in IVF treatment What is known already Studies demonstrated that infection with COVID-19 during pregnancy increased the risk of the development of severe disease and pregnancy complications. A recent meta-analysis of international data showed a declining tendency to be vaccinated, possibly influenced by public concerns over safety of the vaccines. Specifically, concerns were raised about a possible detrimental effect on fertility and pregnancy outcomes due to similarity between syncytin-1, a human placental fusion protein, and the SARS-CoV-2 spike protein expressed after administration of the COVID-19 vaccine. To date, only one retrospective analysis on 36 infertility patients has assessed the influence of COVID-19 vaccination on IVF treatment outcomes. Study design, size, duration A retrospective cohort study . The study included a total of 400 patients, 200 vaccinated women and 200 age matched non-vaccinated women, undergoing IVF treatments during January-April 2021. Participants/materials, setting, methods All vaccinated women aged 20-42 that underwent IVF treatment cycles between January 1, 2021 and April 31 2021 were included. All participants completed two doses of the BNT162b2 (Pfizer-BioNTech) vaccine at least two weeks before starting ovarian stimulation. The study group was matched by age to non-vaccinated patients that underwent IVF treatments during the same period. Patients with a positive COVID 19 test in the past were excluded. Main results and the role of chance Two hundred patients underwent oocyte retrieval 14-68 days after receiving COVID-19 vaccination. No difference was found between vaccinated and non-vaccinated patients in mean number of oocytes retrieved per cycle (10.63 vs 10.72, p = 0.93). Among 128 vaccinated patients and 133 non-vaccinated patients that underwent fresh embryos transfers, no difference was demonstrated in clinical pregnancy rates (32.8% vs. 33.1%, p-value=0.96), 42 and 44 pregnancies respectively. The fertilization rates and mean number of cryopreserved embryos were similar between the two groups in freeze all cycles (55.43% vs. 54.29%, p-value=0.73), (3.59 vs. 3.28, p-value=0.80). Among vaccinated patients and non-vaccinated patients that underwent fresh embryos transfers, no difference was demonstrated in the fertilization rate (64.81% vs. 61.98%, p = 0.51), and transferred embryos quality. Regression models applied demonstrated no effect of the vaccine on oocyte yields and pregnancy rates. Limitations, reasons for caution Limitations include retrospective nature and different treatment protocols. Additional limitation is the lack of information about vaccination status of the partners. One would assume that if unbalanced, the proportion of vaccinated males would be higher in the study group as partners tend to choose similarly in regard to vaccine administration. Wider implications of the findings Women should consider vaccination prior to their attempts to conceive via IVF treatments. Trial registration number ASF-0094-21
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Affiliation(s)
- S Avraham
- Shamir Medical Centre- affiliated with the Sackler Faculty of Medicine- Tel Aviv University- Israel., IVF Unit- Department of Obstetrics and Gynecology , tel aviv, Israel
| | - A Kedem
- Shamir Medical Centre- affiliated with the Sackler Faculty of Medicine- Tel Aviv University- Israel., IVF Unit- Department of Obstetrics and Gynecology , tel aviv, Israel
| | - H Zur
- Shamir Medical Centre- affiliated with the Sackler Faculty of Medicine- Tel Aviv University- Israel., IVF Unit- Department of Obstetrics and Gynecology , tel aviv, Israel
| | - M Youngster
- Shamir Medical Centre- affiliated with the Sackler Faculty of Medicine- Tel Aviv University- Israel., IVF Unit- Department of Obstetrics and Gynecology , tel aviv, Israel
| | - O Yaakov
- Shamir Medical Centre- affiliated with the Sackler Faculty of Medicine- Tel Aviv University- Israel., IVF Unit- Department of Obstetrics and Gynecology , tel aviv, Israel
| | - G Yerushalmi
- Shamir Medical Centre- affiliated with the Sackler Faculty of Medicine- Tel Aviv University- Israel., IVF Unit- Department of Obstetrics and Gynecology , tel aviv, Israel
| | - I Gat
- Shamir Medical Centre- affiliated with the Sackler Faculty of Medicine- Tel Aviv University- Israel., IVF Unit- Department of Obstetrics and Gynecology , tel aviv, Israel
| | - Y Gidoni
- Shamir Medical Centre- affiliated with the Sackler Faculty of Medicine- Tel Aviv University- Israel., IVF Unit- Department of Obstetrics and Gynecology , tel aviv, Israel
| | - M Baum
- Sheba Medical Centre- affiliated with the Sackler Faculty of Medicine- Tel Aviv University- Israel and IVF Unit- Herzliya Medical Centre- Herzliya- Israel., IVF Unit- Department of Obstetrics and Gynecology , Herzliya, Israel
| | - A Hourvitz
- Shamir Medical Centre- affiliated with the Sackler Faculty of Medicine- Tel Aviv University- Israel., IVF Unit- Department of Obstetrics and Gynecology , tel aviv, Israel
| | - E Maman
- Sheba Medical Centre- affiliated with the Sackler Faculty of Medicine- Tel Aviv University- Israel and IVF Unit- Herzliya Medical Centre- Herzliya- Israel., IVF Unit- Department of Obstetrics and Gynecology , Herzliya, Israel
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Barkat J, Youngster M, Avraham S, Yaakov O, Landau Rabbi M, Gat I, Yerushalmi G, Baum M, Maman E, Kedem A, Hourvitz A. O-140 The impact of past COVID-19 infection on pregnancy rates in frozen embryo transfer cycles. Hum Reprod 2022. [PMCID: PMC9384432 DOI: 10.1093/humrep/deac105.040] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Study question What is the effect of COVID-19 infection on pregnancy rates in frozen embryo transfer (FET) cycles? Summary answer Past COVID-19 infection decreased pregnancy rates in FET cycles, especially in patients with recent infection. What is known already ACE2 and TMPRSS2 are expressed in the endometrium, potentially enabling SARS-COV-2 viral invasion of the cells. Unlike with bacterial infections, the effect of viral infections in general on implantation and pregnancy rates is unclear. Some evidence suggests that early embryonic and trophoblastic infection, may result in impaired implantation or placentation. A recently published study including both recovered and vaccinated patients did not find an effect of COVID-19 immunity on FET cycle outcomes. The study did not stratify by time from infection thus the immediate consequences of infection on pregnancy rates could not be properly evaluated. Study design, size, duration A retrospective cohort study, including 41 COVID-19 recovered women, aged 20-42 years that underwent FET cycles, and 41 controls between January 1, and June 31, 2021, at a large IVF unit. Participants/materials, setting, methods Embryos transferred were the product of fresh cycles performed prior to infection. Maximal time from infection to transfer was defined as one year. The study group was matched by age, number of embryos transferred and day of transfer, to unvaccinated patients, with no history of past infection that underwent FET cycles during the same period. Demographics and cycle characteristics were recorded. Clinical and ongoing pregnancy rates were compared, with further stratification by time from infection. Main results and the role of chance Clinical pregnancy rates were 29.3% and 48.8% for the recovered and control patients respectively (p = 0.070). Ongoing pregnancy rates were 26.6% vs. 43.4% (p = 0.093). Mean age at ovum pickup (30.72 vs. 30.69; p = 0.929) and at transfer (31.56 vs. 31.58; p = 0.966) was similar between groups, as were the demographic characteristics and previous retrievals and transfers. The predominant transfer protocol used was different between groups with higher rates of natural cycle (NC) protocol in the COVID group (61% vs. 33.3%; p = 0.013. All other cycle characteristics including endometrial width, number of embryos transferred, day of embryo transfer and embryo grade were similar. Stratification by time from COVID-19 infection to transfer into ≤60 and >60 days revealed a significant difference in pregnancy rates, with recovered women having lower pregnancy rates if infected in proximity to the transfer (20.7% vs. 55.2%; p = 0.006). In a logistic regression model, infection was a significant variable (p = 0.05, OR 0.325, 95% CI 0.106-0.998). Logistic regression applied on the subgroup of women infected in proximity to the transfer, further strengthened the univariate results, with COVID-19 infection remaining a significant parameter (p = 0.005, OR 0.072, 95% CI 0.012-0.450). Limitations, reasons for caution A retrospective study, with a limited sample size, but nevertheless our results showed significant differences. Wider implications of the findings Further studies with larger groups are warranted to support these findings. Pending further information, in cases of FET cycles with limited numbers of embryos (advanced age, embryo donation, fertility preservation, embryos following sperm extraction), postponing embryo transfer for at least 60 days following recovery might be considered, if feasible. Trial registration number HMC-0010-21
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Affiliation(s)
- J Barkat
- Shamir Medical center, IVF , Tel Aviv, Israel
| | - M Youngster
- Shamir Medical center, Ivf & Infertility unit , Tel Aviv, Israel
| | - S Avraham
- Shamir Medical center, Ivf & Infertility unit , Tel Aviv, Israel
| | - O Yaakov
- Shamir Medical center, Ivf & Infertility unit , Tel Aviv, Israel
| | - M Landau Rabbi
- Shamir Medical center, Ivf & Infertility unit , Tel Aviv, Israel
| | - I Gat
- Shamir Medical center, Ivf & Infertility unit , Tel Aviv, Israel
| | - G Yerushalmi
- Shamir Medical center, Ivf & infertility uniit , Tel Aviv, Israel
| | - M Baum
- HMC, Ivf, Herzliya , Israel
| | | | - A Kedem
- Shamir Medical center, Ivf & Infertility unit , Tel Aviv, Israel
| | - A Hourvitz
- Shamir Medical center, Ivf & Infertility unit , Tel Aviv, Israel
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Kedem A, Avraham S, Yaakov O, Landau Rabbi M, Gat I, Yerushalmi G, Baum M, Maman E, Hourvitz A, Youngster M. O-141 IVF under COVID-19: treatment outcomes of fresh and frozen cycles. Hum Reprod 2022. [PMCID: PMC9384351 DOI: 10.1093/humrep/deac105.041] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Study question Does prior SARS-CoV-2 infection in women undergoing fertility treatments affect outcomes of fresh ART cycles? Summary answer SARS-CoV-2 infection does not affect fresh ART treatment outcomes. A possible long term negative effect on oocyte yield should be further explored. What is known already There is evidence that the renin–angiotensin–aldosterone system (RAS) is involved in female reproductive processes such as folliculogenesis, steroidogenesis, oocyte maturation and ovulation. The existence of the ACE2 axis and ACE2 markers were confirmed in all stages of follicular maturation in the human ovary, including the granulosa cells and follicular fluid. A single previous study found no evidence that a history of asymptomatic or mild SARS-CoV-2 infection in females caused impairment of fresh ART treatment outcomes. Study design, size, duration Retrospective cohort study, including all SARS-CoV-2 infected women that underwent fresh ART cycles within a year from infection (the first cycle post infection), between October 2020 and June 2021, matched to uninfected controls. Participants/materials, setting, methods Retrospective cohort study, including all SARS-CoV-2 infected women that underwent fresh ART cycles within a year from infection (the first cycle post infection), between October 2020 and June 2021, matched to uninfected controls. Main results and the role of chance 121 infected patients and 121 controls that underwent fresh ART cycles were included. Oocyte yield (12.50 vs. 11.29; p = 0.169) and mature oocyte rate (77.71 vs. 81.76; p = 0.144) in all fresh cycles were similar between groups, as werefertilization rates, number of frozen embryos per cycle and clinical pregnancy rates (42.9% vs. 40.4%; p = 0.737) in fresh cycles with an embryo transfer. Stratification by time from COVID-19 infection by time from infection <90 day, 90-180 days and > 180 days revealed similar results with no difference in pregnancy rates. In a logistic regression model, COVID-19 infection did not affect pregnancy rates except for the small subgroup of patients who recovered more than 180 days prior to retrieval with a negative effect on oocyte yield (p = 0.018, Slope=-4.08, 95%CI 95% CI -0.7.41 – -0.75). Limitations, reasons for caution A retrospective study with data that was not uniformly generated under a study protocol, no antibody testing for the control group. Wider implications of the findings The study findings suggest that COVID-19 infection does not affect treatment outcomes in fresh ART cycles, except for a possible long term negative effect on oocyte yield when retrieval occurs > 180 days post COVID-19 infection. Further studies are warranted in order to support these findings. Trial registration number HMC-0010-21
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Affiliation(s)
- A Kedem
- Shamir medical Center, IVF Unit- Department of Obstetrics & Gynecology- Shamir Medical Center , Ber Yaakob, Israel
| | - S Avraham
- Shamir medical Center, IVF Unit- Department of Obstetrics & Gynecology- Shamir Medical Center , Ber Yaakob, Israel
| | - O Yaakov
- Shamir medical Center, IVF Unit- Department of Obstetrics & Gynecology- Shamir Medical Center , Ber Yaakob, Israel
| | - M Landau Rabbi
- Shamir medical Center, IVF Unit- Department of Obstetrics & Gynecology- Shamir Medical Center , Ber Yaakob, Israel
| | - I Gat
- Shamir medical Center, IVF Unit- Department of Obstetrics & Gynecology- Shamir Medical Center , Ber Yaakob, Israel
| | - G Yerushalmi
- Shamir medical Center, IVF Unit- Department of Obstetrics & Gynecology- Shamir Medical Center , Ber Yaakob, Israel
| | - M Baum
- Sheba Medical Center, IVF Unit , Ramat Gan, Israel
| | - E Maman
- Sheba Medical Center, IVF Unit , Ramat Gan, Israel
| | - A Hourvitz
- Shamir medical Center, IVF Unit- Department of Obstetrics & Gynecology- Shamir Medical Center , Ber Yaakob, Israel
| | - M Youngster
- Shamir medical Center, IVF Unit- Department of Obstetrics & Gynecology- Shamir Medical Center , Ber Yaakob, Israel
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Petzsche V, Rabl T, Franzke S, Baum M. Perceived gain or loss? How digital affordances influence employee corporate entrepreneurship participation likelihood. European Management Review 2022. [DOI: 10.1111/emre.12530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Tanja Rabl
- Technische Universität Kaiserslautern Kaiserslautern Germany
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Eisenbrand G, Baum M, Cartus AT, Diel P, Engel KH, Engeli B, Epe B, Grune T, Guth S, Haller D, Heinz V, Hellwig M, Hengstler JG, Henle T, Humpf HU, Jäger H, Joost HG, Kulling S, Lachenmeier DW, Lampen A, Leist M, Mally A, Marko D, Nöthlings U, Röhrdanz E, Roth A, Spranger J, Stadler R, Vieths S, Wätjen W, Steinberg P. Salivary nitrate/nitrite and acetaldehyde in humans: potential combination effects in the upper gastrointestinal tract and possible consequences for the in vivo formation of N-nitroso compounds-a hypothesis. Arch Toxicol 2022; 96:1905-1914. [PMID: 35504979 DOI: 10.1007/s00204-022-03296-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 03/24/2022] [Indexed: 11/28/2022]
Abstract
Subsequent to the dietary uptake of nitrate/nitrite in combination with acetaldehyde/ethanol, combination effects resulting from the sustained endogenous exposure to nitrite and acetaldehyde may be expected. This may imply locoregional effects in the upper gastrointestinal tract as well as systemic effects, such as a potential influence on endogenous formation of N-nitroso compounds (NOC). Salivary concentrations of the individual components nitrate and nitrite and acetaldehyde are known to rise after ingestion, absorption and systemic distribution, thereby reflecting their respective plasma kinetics and parallel secretion through the salivary glands as well as the microbial/enzymatic metabolism in the oral cavity. Salivary excretion may also occur with certain drug molecules and food constituents and their metabolites. Therefore, putative combination effects in the oral cavity and the upper digestive tract may occur, but this has remained largely unexplored up to now. In this Guest Editorial, published evidence on exposure levels and biokinetics of nitrate/nitrite/NOx, NOC and acetaldehyde in the organism is reviewed and knowledge gaps concerning combination effects are identified. Research is suggested to be initiated to study the related unresolved issues.
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Affiliation(s)
| | - Matthias Baum
- Solenis Germany Industries GmbH, Fütingsweg 20, 47805, Krefeld, Germany
| | | | - Patrick Diel
- Department of Molecular and Cellular Sports Medicine, Institute of Cardiovascular Research and Sports Medicine, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| | - Karl-Heinz Engel
- Chair of General Food Technology, Technical University of Munich, Maximus-von-Imhof-Forum 2, 85354, Freising, Germany
| | - Barbara Engeli
- Risk Assessment Division, Federal Food Safety and Veterinary Office (FSVO), Schwarzenburgstrasse 155, 3003, Bern, Switzerland
| | - Bernd Epe
- Institute of Pharmaceutical and Biomedical Sciences, University of Mainz, Staudinger Weg 5, 55128, Mainz, Germany
| | - Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition (DIfE), Arthur-Scheunert-Allee 114-116, 14558, Nuthetal, Germany
| | - Sabine Guth
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr. 67, 44139, Dortmund, Germany
| | - Dirk Haller
- ZIEL, Institute for Food and Health, Technical University of Munich, 85354, Freising, Germany.,Chair of Nutrition and Immunology, Technical University of Munich, Gregor-Mendel-Str. 2, 85354, Freising, Germany
| | - Volker Heinz
- German Institute of Food Technologies (DIL), Prof.-von-Klitzing-Str. 7, 49610, Quakenbrück, Germany
| | - Michael Hellwig
- Institute of Food Chemistry, Technical University of Braunschweig, Schleinitzstr. 20, 38106, Braunschweig, Germany
| | - Jan G Hengstler
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr. 67, 44139, Dortmund, Germany
| | - Thomas Henle
- Department of Food Chemistry, TU Dresden, Bergstrasse 66, 01069, Dresden, Germany
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 45, 48149, Münster, Germany
| | - Henry Jäger
- Institute of Food Technology, University of Natural Resources and Life Sciences (BOKU), Muthgasse 18, 1190, Vienna, Austria
| | - Hans-Georg Joost
- Department of Experimental Diabetology, German Institute of Human Nutrition (DIfE), Arthur-Scheunert-Allee 114-116, 14558, Nuthetal, Germany
| | - Sabine Kulling
- Department of Safety and Quality of Fruit and Vegetables, Federal Research Institute of Nutrition and Food, Max Rubner-Institut, Haid-und-Neu-Straße 9, 76131, Karlsruhe, Germany
| | - Dirk W Lachenmeier
- Chemisches und Veterinäruntersuchungsamt Karlsruhe, Weißenburger Straße 3, 76187, Karlsruhe, Germany
| | - Alfonso Lampen
- Risk Assessment Strategies, Bundesinstitut für Risikobewertung (BfR), Max-Dohrn-Straße 8-10, Berlin, Germany
| | - Marcel Leist
- In Vitro Toxicology and Biomedicine, Department Inaugurated by the Doerenkamp-Zbinden Foundation, University of Konstanz, Box 657, 78457, Konstanz, Germany
| | - Angela Mally
- Department of Toxicology, University of Würzburg, Versbacher Str. 9, 97078, Würzburg, Germany
| | - Doris Marko
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Währinger Straße 38, 1090, Vienna, Austria
| | - Ute Nöthlings
- Department of Nutrition and Food Sciences, Nutritional Epidemiology, Rheinische Friedrich-Wilhelms University Bonn, Friedrich-Hirzebruch-Allee 7, 53115, Bonn, Germany
| | - Elke Röhrdanz
- Unit Reproductive and Genetic Toxicology, Federal Institute for Drugs and Medical Devices (BfArM), Kurt-Georg-Kiesinger Allee 3, 53175, Bonn, Germany
| | - Angelika Roth
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr. 67, 44139, Dortmund, Germany
| | - Joachim Spranger
- Department of Endocrinology and Metabolic Medicine, Campus Benjamin Franklin, Charité University Medicine, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Richard Stadler
- Institute of Food Safety and Analytic Sciences, Nestlé Research Centre, Route du Jorat 57, 1000, Lausanne 26, Switzerland
| | - Stefan Vieths
- Federal Institute for Vaccines and Biomedicines, Paul-Ehrlich-Institut, Paul-Ehrlich-Straße 51-59, 63225, Langen, Germany
| | - Wim Wätjen
- Institut für Agrar- und Ernährungswissenschaften, Martin-Luther-Universität Halle-Wittenberg, Weinbergweg 22, 06120, Halle (Saale), Germany
| | - Pablo Steinberg
- Federal Research Institute of Nutrition and Food, Max Rubner-Institut, Haid-und-Neu-Straße 9, 76131, Karlsruhe, Germany.
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Hubner S, Rudic B, Baum M. How entrepreneur’s leadership behavior and demographics shape applicant attraction to new ventures: the role of stereotypes. The International Journal of Human Resource Management 2021. [DOI: 10.1080/09585192.2021.1893785] [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] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Sylvia Hubner
- Faculty of Economics and Management, Free University of Bozen/Bolzano, Bolzano, Italy
| | - Biljana Rudic
- Institute for LifeLong Learning, Technische Universität München, München, Germany
| | - Matthias Baum
- Chair of Entrepreneurship and Digital Business Models, Universität Bayreuth, Bayreuth, Germany
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Guth S, Roth A, Engeli B, Lachenmeier DW, Cartus AT, Hüser S, Baum M, Diel P, Eisenbrand G, Hengstler JG, Humpf HU, Joost HG, Lampen A, Leist M, Marko D, Steinberg P, Mally A, Zarn JA. Comparison of points of departure between subchronic and chronic toxicity studies on food additives, food contaminants and natural food constituents. Food Chem Toxicol 2020; 146:111784. [PMID: 32998026 DOI: 10.1016/j.fct.2020.111784] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/10/2020] [Accepted: 09/16/2020] [Indexed: 11/25/2022]
Abstract
It was generally accepted as a default assumption that No-Observed-Adverse-Effect Levels (NOAELs) or Lowest-Observed-Adverse-Effect Levels (LOAELs) in long-term toxicity studies are lower than in short-term ones, i.e. the toxic potency increases with prolonged exposure duration. Recent studies on pesticides and industrial chemicals reported that subacute, subchronic or chronic NOAELs/LOAELs are similar when study design factors are appropriately considered. We investigated whether these findings also apply to certain food constituents. After reviewing subchronic and chronic toxicity studies on more than 100 compounds, a total of 32 compounds could be included in the analysis. Geometric mean (GM) values of subchronic vs. chronic NOAEL or LOAEL ratios ranged from 1.0 to 2.0, with a geometric standard deviation from 2.2 to 4.2, which is consistent with data reported in the literature. While for many of the investigated compounds the ratio is around 1 - suggesting that health-based guidance values could appropriately be derived from subchronic toxicity studies - our study also identified some substances with higher ratios leading to a GM of around 2. The EFSA Scientific Committee suggested to apply an uncertainty factor of 2 to extrapolate from subchronic to chronic studies and, as a precautionary approach, we concur with this suggestion.
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Affiliation(s)
- Sabine Guth
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr. 67, 44139, Dortmund, Germany.
| | - Angelika Roth
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr. 67, 44139, Dortmund, Germany.
| | - Barbara Engeli
- Eidgenössisches Department des Inneren EDI, Bundesamt für Lebensmittelsicherheit und Veterinärwesen BLV, Schwarzenburgstrasse 155, 3003, Bern, Switzerland.
| | - Dirk W Lachenmeier
- Chemisches und Veterinäruntersuchungsamt Karlsruhe, Weißenburger Str. 3, 76187, Karlsruhe, Germany.
| | - Alexander T Cartus
- University of Kaiserslautern, Food Chemistry and Toxicology, Erwin-Schroedinger-Strasse 52, 67663, Kaiserslautern, Germany.
| | - Stephanie Hüser
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr. 67, 44139, Dortmund, Germany
| | - Matthias Baum
- Solenis Germany Industries GmbH, Theodor-Heuss-Anlage 12, 68165, Mannheim, Germany.
| | - Patrick Diel
- Department of Molecular and Cellular Sports Medicine, Institute of Cardiovascular Research and Sports Medicine, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany.
| | | | - Jan G Hengstler
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystr. 67, 44139, Dortmund, Germany.
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 45, 48149, Münster, Germany.
| | - Hans-Georg Joost
- Department of Experimental Diabetology, German Institute of Human Nutrition (DIfE), Arthur-Scheunert-Allee 114-116, 14558, Nuthetal, Germany.
| | - Alfonso Lampen
- Department of Food Safety, Bundesinstitut für Risikobewertung (BfR), Max-Dohrn-Straße 8-10, 10589, Berlin, Germany.
| | - Marcel Leist
- In Vitro Toxicology and Biomedicine, Department inaugurated by the Doerenkamp-Zbinden Foundation, University of Konstanz, Box 657, 78457, Konstanz, Germany.
| | - Doris Marko
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Waehringer Str. 38, 1090 Vienna, Austria.
| | - Pablo Steinberg
- Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Haid-und-Neu-Str. 9, 76131, Karlsruhe, Germany.
| | - Angela Mally
- Department of Toxicology, University of Würzburg, Versbacher Str. 9, 97078, Würzburg, Germany.
| | - Jürg A Zarn
- Eidgenössisches Department des Inneren EDI, Bundesamt für Lebensmittelsicherheit und Veterinärwesen BLV, Schwarzenburgstrasse 155, 3003, Bern, Switzerland.
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Baum M, Fallowfield L, Farewell V, Macbeth F, Treasure T. NICE Guidelines: management of colorectal cancer metastases. Br J Surg 2020; 107:e357. [PMID: 32652538 DOI: 10.1002/bjs.11789] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 05/19/2020] [Indexed: 01/16/2023]
Affiliation(s)
- M Baum
- University College, Sussex, UK
| | - L Fallowfield
- Sussex Health Outcomes Research & Education in Cancer (SHORE-C), University of Sussex, Sussex, UK
| | | | - F Macbeth
- Centre for Trials Research, Cardiff University, Cardiff, UK
| | - T Treasure
- Clinical Operational Research Unit, University College London, London, UK
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Dogan O, Schierbaum N, Weidenmuller J, Baum M, Schroder T, Wunsch D, Gortz M, Seidl K. Miniaturized Multi Sensor Implant for Monitoring of Hemodynamic Parameters .. Annu Int Conf IEEE Eng Med Biol Soc 2020; 2019:3823-3826. [PMID: 31946707 DOI: 10.1109/embc.2019.8856571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
t a novel miniaturized multi sensor implant for monitoring hemodynamic parameters in cardiovascular regions. Pressure measurements are performed with a highly accurate capacitive pressure sensor. An additional acceleration and temperature sensor allows compensating the impact of patient's inclination and temperature variations on the pressure measurement, respectively. A multi-functional transponder application-specific integrated circuit (ASIC) manages sensor signal processing, storage of ID, sensor calibration data, telemetric energy, and data transmission with an extracorporeal reading unit. Each component of the implant is assembled on a low temperature co-fired ceramics (LTCC) circuit board with an integrated antenna coil enabling an inductive near-field coupling at a frequency of 13.56 MHz. For a streamlined shape and reduction of thrombogenicity, the implant is encapsulated by biocompatible polymers.
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Boehnlein P, Baum M. Does job crafting always lead to employee well-being and performance? Meta-analytical evidence on the moderating role of societal culture. The International Journal of Human Resource Management 2020. [DOI: 10.1080/09585192.2020.1737177] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Philipp Boehnlein
- Department of Economics, Technische Universität Kaiserslautern, Kaiserslautern, Germany
| | - Matthias Baum
- Department of Economics, Technische Universität Kaiserslautern, Kaiserslautern, Germany
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Baum M, Danner-Schröder A, Müller-Seitz G, Rabl T. Organisational Emergence – Interdisciplinary Perspectives against the Backdrop of the Digital Transformation. mrev 2020. [DOI: 10.5771/0935-9915-2020-1-31] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Organisational emergence is of key interest in organisational theory. Most of the present studies, however, analyse the emergence of changes in already existing phenomena such as, for example, how strategies or organisational routines are subject to change. In contrast, previous research in organisational theory has rarely addressed organisational emergence in essence (i.e., from scratch) and might benefit from looking beyond the confines of one’s own discipline. To address this void, we draw on the case of digital emergent self-organised organisations as an exemplary form thereof. Emerging organisations in digital environments appear to be created much more spontaneously, and multiple processes occur simultaneously. So, probing into a digital environment allows us to get a fresh perspective on organisational emergence and to advance previous theorising by incorporating notions from the fields of leadership and entrepreneurship.
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Treasure T, Macbeth F, Baum M, Shackcloth M, Edwards J, Batchelor T. P2.16-02 Randomising Patients into Trials of Thoracic Cancer Surgery: An Analysis of Patient and Cancer Team Behaviour in Practice. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Retsky MW, Baum M, Vaidya JS, Rogers RA, Hrushesky WJ, Demicheli R, Forget P. Abstract P2-01-01: Early relapses in breast cancer can be prevented by a perioperative NSAID, which would be a solution to a 2000 year old problem. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-01-01] [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: 11/16/2022]
Abstract
Abstract
A bimodal pattern of hazard of relapse among early stage breast cancer patients has been identified in multiple databases from US, Europe and Asia. We have been studying these data to determine if this can lead to new ideas on how to prevent relapse in breast cancer. Using computer simulation and access to a very high quality database from Milan for patients treated with mastectomy only, we proposed that relapses within 3 years of surgery are stimulated somehow by the surgical procedure. During the week post surgery, metastatic development is enhanced 100 fold according to the simulation. Most relapses in breast cancer are in this early category. Retrospective data from a Brussels anesthesiology group suggested a plausible mechanism. Use of ketorolac, a common NSAID analgesic used in surgery was associated with far superior disease-free survival in the first 5 years after surgery. The expected prominent early relapse events in months 9-18 are reduced 5-fold. Transient systemic inflammation accompanying surgery (identified by IL-6 in serum) could facilitate angiogenesis of dormant micrometastases, proliferation of dormant single cells, and seeding of circulating cancer stem cells resulting in early relapse and could have been effectively blocked by the perioperative anti-inflammatory agent. If this observation holds up to further scrutiny, it could mean that the simple use of this safe, inexpensive and effective anti-inflammatory agent at surgery might eliminate early relapses. Similar bimodal patterns have been identified in other cancers suggesting a general effect. Based on the writings of Galen and Celsus, metastatic development after breast tumors were removed was known to them 2000 years ago.
This effect has been demonstrated recently in a mouse model by Krall et al Science Translational Medicine and reviewed in NEJM by Komaroff. In a series of experiments in 273 mice, aggressive mouse breast cancer cells were implanted in various locations. Initially, the tumor cells grew but then became dormant. This dormancy occurred only in mice with intact immunity, which suggests that the immune system can contain certain dormant metastases. Surgery of any type (including resection of a primary tumor) led to aggressive growth of metastases in 60% of animals, compared with 10% of control animals that did not undergo surgery. Surgical procedures caused systemic inflammatory responses. Activated monocytes from the marrow traveled to the sites of the dormant metastases and became tumor associated macrophages. These macrophages suppressed the immune system near the tumor, awakening the metastases from their dormancy. Treating the animals with NSAIDs before and immediately following surgery greatly attenuated growth of these metastases.
Since this effect has by now been shown in two Belgian retrospective studies as well as a mouse model we suggest this be tested in one or more clinical trials. We also note that the bleeding potential from using NSAIDs before surgery can apparently be reduced with the use of Tranexamic Acid – currently being tested in a clinical trial for mastectomy.
Citation Format: Retsky MW, Baum M, Vaidya JS, Rogers RA, Hrushesky WJ, Demicheli R, Forget P. Early relapses in breast cancer can be prevented by a perioperative NSAID, which would be a solution to a 2000 year old problem [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-01-01.
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Affiliation(s)
- MW Retsky
- Harvard TH Chan School of Public Health, Boston, MA; University College London (Emeritus), London, United Kingdom; University College London, London, United Kingdom; University of Southern Carolina (Retired), Columbia, SC; University of Milan, Milan, Italy; University Hospital Brussels, Brussels, Belgium
| | - M Baum
- Harvard TH Chan School of Public Health, Boston, MA; University College London (Emeritus), London, United Kingdom; University College London, London, United Kingdom; University of Southern Carolina (Retired), Columbia, SC; University of Milan, Milan, Italy; University Hospital Brussels, Brussels, Belgium
| | - JS Vaidya
- Harvard TH Chan School of Public Health, Boston, MA; University College London (Emeritus), London, United Kingdom; University College London, London, United Kingdom; University of Southern Carolina (Retired), Columbia, SC; University of Milan, Milan, Italy; University Hospital Brussels, Brussels, Belgium
| | - RA Rogers
- Harvard TH Chan School of Public Health, Boston, MA; University College London (Emeritus), London, United Kingdom; University College London, London, United Kingdom; University of Southern Carolina (Retired), Columbia, SC; University of Milan, Milan, Italy; University Hospital Brussels, Brussels, Belgium
| | - WJ Hrushesky
- Harvard TH Chan School of Public Health, Boston, MA; University College London (Emeritus), London, United Kingdom; University College London, London, United Kingdom; University of Southern Carolina (Retired), Columbia, SC; University of Milan, Milan, Italy; University Hospital Brussels, Brussels, Belgium
| | - R Demicheli
- Harvard TH Chan School of Public Health, Boston, MA; University College London (Emeritus), London, United Kingdom; University College London, London, United Kingdom; University of Southern Carolina (Retired), Columbia, SC; University of Milan, Milan, Italy; University Hospital Brussels, Brussels, Belgium
| | - P Forget
- Harvard TH Chan School of Public Health, Boston, MA; University College London (Emeritus), London, United Kingdom; University College London, London, United Kingdom; University of Southern Carolina (Retired), Columbia, SC; University of Milan, Milan, Italy; University Hospital Brussels, Brussels, Belgium
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Yerushalmi GM, Salmon-Divon M, Ophir L, Yung Y, Baum M, Coticchio G, Fadini R, Mignini-Renzini M, Dal Canto M, Machtinger R, Maman E, Hourvitz A. Characterization of the miRNA regulators of the human ovulatory cascade. Sci Rep 2018; 8:15605. [PMID: 30353018 PMCID: PMC6199329 DOI: 10.1038/s41598-018-33807-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/21/2018] [Indexed: 11/16/2022] Open
Abstract
Ovarian follicular development and ovulation are complex and tightly regulated processes that involve regulation by microRNAs (miRNAs). We previously identified differentially expressed mRNAs between human cumulus granulosa cells (CGCs) from immature early antral follicles (germinal vesicle - GV) and mature preovulatory follicles (metaphase II - M2). In this study, we performed an integrated analysis of the transcriptome and miRNome in CGCs obtained from the GV cumulus-oocyte complex (COC) obtained from IVM and M2 COC obtained from IVF. A total of 43 differentially expressed miRNAs were identified. Using Ingenuity IPA analysis, we identified 7288 potential miRNA-regulated target genes. Two hundred thirty-four of these target genes were also found in our previously generated ovulatory gene library while exhibiting anti-correlated expression to the identified miRNAs. IPA pathway analysis suggested that miR-21 and FOXM1 cooperatively inhibit CDC25A, TOP2A and PRC1. We identified a mechanism for the temporary inhibition of VEGF during ovulation by TGFB1, miR-16-5p and miR-34a-5p. The linkage bioinformatics analysis between the libraries of the coding genes from our preliminary study with the newly generated library of regulatory miRNAs provides us a comprehensive, integrated overview of the miRNA-mRNA co-regulatory networks that may play a key role in controlling post-transcriptomic regulation of the ovulatory process.
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Affiliation(s)
- G M Yerushalmi
- Reproduction Lab and IVF Unit, Department of Obstetrics and Gynecology, Sheba Medical Center, 52662, Tel Hashomer, Affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - M Salmon-Divon
- Department of Molecular Biology, Ariel University, Ariel, Israel
| | - L Ophir
- Reproduction Lab and IVF Unit, Department of Obstetrics and Gynecology, Sheba Medical Center, 52662, Tel Hashomer, Affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Y Yung
- Reproduction Lab and IVF Unit, Department of Obstetrics and Gynecology, Sheba Medical Center, 52662, Tel Hashomer, Affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - M Baum
- Reproduction Lab and IVF Unit, Department of Obstetrics and Gynecology, Sheba Medical Center, 52662, Tel Hashomer, Affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - G Coticchio
- Biogenesi, Reproductive Medicine Centre, Istituti Clinici Zucchi, Via Zucchi 24, 20052, Monza, Italy
| | - R Fadini
- Biogenesi, Reproductive Medicine Centre, Istituti Clinici Zucchi, Via Zucchi 24, 20052, Monza, Italy
| | - M Mignini-Renzini
- Biogenesi, Reproductive Medicine Centre, Istituti Clinici Zucchi, Via Zucchi 24, 20052, Monza, Italy
| | - M Dal Canto
- Biogenesi, Reproductive Medicine Centre, Istituti Clinici Zucchi, Via Zucchi 24, 20052, Monza, Italy
| | - R Machtinger
- Reproduction Lab and IVF Unit, Department of Obstetrics and Gynecology, Sheba Medical Center, 52662, Tel Hashomer, Affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - E Maman
- Reproduction Lab and IVF Unit, Department of Obstetrics and Gynecology, Sheba Medical Center, 52662, Tel Hashomer, Affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - A Hourvitz
- Reproduction Lab and IVF Unit, Department of Obstetrics and Gynecology, Sheba Medical Center, 52662, Tel Hashomer, Affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Fallowfield LJ, Baum M, Maguire GP. Addressing the Psychological Needs of the Conservatively Treated Breast Cancer Patient: Discussion Paper. J R Soc Med 2018; 80:696-700. [PMID: 3320367 PMCID: PMC1291092 DOI: 10.1177/014107688708001113] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- L J Fallowfield
- Cancer Research Campaign Clinical Trials Centre, Rayne Institute, London
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Affiliation(s)
- M Baum
- Department of Surgery, University College London Medical School, England
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Baum M. Book Review: Stress and Breast Cancer. J R Soc Med 2018. [DOI: 10.1177/014107688808101138] [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: 11/17/2022] Open
Affiliation(s)
- M Baum
- General Surgery King's College Hospital, London
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Abstract
A low-intervention policy for Hickman catheter maintenance has been evaluated and found to be safe and cost effective. A simple, lightweight, disposable device has been used for 24–hour ambulatory home infusion. Implementation of this policy as part of a prospective randomized trial of single-agent chemotherapy in advanced breast cancer has demonstrated that slow intravenous infusion reduces the acute toxicity of epirubicin when compared with bolus injection.
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Affiliation(s)
- S R Ebbs
- Department of Surgery, King's College Hospital, Rayne Institute, London
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Fallowfield LJ, Rodway A, Baum M. What are the Psychological Factors Influencing Attendance, Non-Attendance and Re-Attendance at a Breast Screening Centre? J R Soc Med 2018; 83:547-51. [PMID: 2213798 PMCID: PMC1292810 DOI: 10.1177/014107689008300905] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We describe some preliminary findings from a pilot study using three recently developed questionnaires which assessed items such as the health beliefs, knowledge about cancer and attitudes to breast cancer screening in 242 women invited to attend for mammographic screening in South East London. We suggest that these questionnaires should be used in all regional centres both to monitor psychological variables and to identify local problems within the service which may be influencing the up-take of invitations to come for screening.
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Affiliation(s)
- L J Fallowfield
- CRC Clinical Trials Centre, King's College School of Medicine & Dentistry, Rayne Institute, London
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Goldstein SL, Somers MJG, Brophy PD, Bunchman TE, Baum M, Blowey D, Mahan JD, Flores FX, Fortenberry JD, Chua A, Alexander SR, Hackbarth R, Symons JM. The Prospective Pediatric Continuous Renal Replacement Therapy (ppCRRT) Registry: Design, Development and Data Assessed. Int J Artif Organs 2018; 27:9-14. [PMID: 14984178 DOI: 10.1177/039139880402700104] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Many issues plague the pediatric ARF outcome literature, which include data only from single center sources, a relative lack of prospective study, mixture within studies of renal replacement therapy modality without stratification and inconsistent use of methods to control for patient illness severity in outcome analysis. Since January 2001, the Prospective Pediatric CRRT (ppCRRT) Registry Group has been collecting data from multiple United States pediatric centers to obtain demographic data regarding pediatric patients who receive CRRT, assess the effect of different CRRT prescriptions on circuit function and evaluate the impact of clinical variables on patient outcome. The aim of the current paper is to describe the ppCRRT Registry design, review the decision process and rationale for the options chosen for the ppCRRT format and discuss the analysis plan and future projects envisioned for the ppCRRT Registry.
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Al-Abdallat AM, Karadsheh A, Hadadd NI, Akash MW, Ceccarelli S, Baum M, Hasan M, Jighly A, Abu Elenein JM. Assessment of genetic diversity and yield performance in Jordanian barley (Hordeum vulgare L.) landraces grown under Rainfed conditions. BMC Plant Biol 2017; 17:191. [PMID: 29096621 PMCID: PMC5668982 DOI: 10.1186/s12870-017-1140-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 10/25/2017] [Indexed: 05/02/2023]
Abstract
BACKGROUND Barley (Hordeum vulgare L.) is a major cereal crop, which is cultivated under variable environmental conditions and abiotic stresses in marginal areas around the globe. In this study, we evaluated 150 Jordanian landraces obtained from ICARDA Gene Bank and four local checks for yield and yield components related-traits in two locations across Jordan for three growing seasons under rainfed conditions. The study aims to identify superior Jordanian barley genotypes under dry conditions, to understand the genotype × environment (G × E) interactions, to analyze stability parameters and to identify markers associated with yield and yield components under rainfed conditions. RESULTS The barley accessions exhibited significant variation for all traits studied. Three accessions with high yield, cultivar superiority and stability under specific environments were identified with accession G69 is the highest yielding and superior for Madaba and overall environments and G144 is the highest yielding at Ramtha. Accession G123 was high yielding in all environments and was stable across different environments. At the genetic level, the Jordanian landraces were found to be diverse with a clustering that was based on row-type. The GWAS analysis identified 77 significant markers-traits associations for multiple traits including grain yield (GY) with three significant QTLs located at 1H, 2H and 7H, which seem important for dry environments. CONCLUSION Utilizing Jordanian barley landraces can effectively improve and adapt the current barley cultivars for cultivation under environmental stresses in dry regions. Utilization of markers associated with important agronomical traits and their incorporation in breeding using marker assisted selection can improve barley tolerance to drought stress.
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Affiliation(s)
- A. M. Al-Abdallat
- Department of Horticulture and Crop Science, Faculty of Agriculture, The University of Jordan, Amman, 11942 Jordan
- International Center for Agricultural Research in the Dry Areas (ICARDA), P.O. Box 950764, Amman, 11195 Jordan
| | - A. Karadsheh
- Al-Mushaqer Regional Center, NCARE, Madaba, Jordan
| | - N. I. Hadadd
- Department of Horticulture and Crop Science, Faculty of Agriculture, The University of Jordan, Amman, 11942 Jordan
- International Center for Agricultural Research in the Dry Areas (ICARDA), P.O. Box 950764, Amman, 11195 Jordan
| | - M. W. Akash
- Department of Horticulture and Crop Science, Faculty of Agriculture, The University of Jordan, Amman, 11942 Jordan
| | - S. Ceccarelli
- Consultant, Rete Semi Rurali, Via di Casignano 25, 50018 Scandicci, FI Italy
| | - M. Baum
- International Center for Agricultural Research in the Dry Areas (ICARDA), P.O. Box 950764, Amman, 11195 Jordan
| | - M. Hasan
- Department of Plant Production and Protection, Faculty of Agricultural Technology, Al-Balqa’ Applied University, Al-Salt, 19117 Jordan
| | - A. Jighly
- International Center for Agricultural Research in the Dry Areas (ICARDA), P.O. Box 950764, Amman, 11195 Jordan
- Agriculture Victoria, Bioscience Research, AgriBio, Centre for AgriBiosciences, Bundoora, VIC 3083 Australia
- School of Applied Systems Biology, La Trobe University, Vic, Bundoora, 3083 Australia
| | - J. M. Abu Elenein
- Department of Horticulture and Crop Science, Faculty of Agriculture, The University of Jordan, Amman, 11942 Jordan
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Stein J, Baum M, Holbein S, Finger T, Cronert T, Tölzer C, Fröhlich T, Biesenkamp S, Schmalzl K, Steffens P, Lee CH, Braden M. Control of Chiral Magnetism Through Electric Fields in Multiferroic Compounds above the Long-Range Multiferroic Transition. Phys Rev Lett 2017; 119:177201. [PMID: 29219446 DOI: 10.1103/physrevlett.119.177201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Indexed: 06/07/2023]
Abstract
Polarized neutron scattering experiments reveal that type-II multiferroics allow for controlling the spin chirality by external electric fields even in the absence of long-range multiferroic order. In the two prototype compounds TbMnO_{3} and MnWO_{4}, chiral magnetism associated with soft overdamped electromagnons can be observed above the long-range multiferroic transition temperature T_{MF}, and it is possible to control it through an electric field. While MnWO_{4} exhibits chiral correlations only in a tiny temperature interval above T_{MF}, in TbMnO_{3} chiral magnetism can be observed over several kelvin up to the lock-in transition, which is well separated from T_{MF}.
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Affiliation(s)
- J Stein
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
| | - M Baum
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
| | - S Holbein
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
- Institut Laue-Langevin, 71 avenue des Martyrs, 38000 Grenoble, France
| | - T Finger
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
| | - T Cronert
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
| | - C Tölzer
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
| | - T Fröhlich
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
| | - S Biesenkamp
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
| | - K Schmalzl
- Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Outstation at Institut Laue-Langevin, 71 avenue des Martyrs, 38000 Grenoble, France
| | - P Steffens
- Institut Laue-Langevin, 71 avenue des Martyrs, 38000 Grenoble, France
| | - C H Lee
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
| | - M Braden
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
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Maman E, Hourvitz A, Baum M. Determination of the of ovulation time:characterization and evaluation of hormone levels prediction value. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
Making randomization easier
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Affiliation(s)
- T Treasure
- Surgical and Interventional Trials Unit and Clinical Operational Research Unit, University College London, 132 Hampstead Road, London NW1 2BX, UK
| | - M Baum
- Department of Surgery, University College London, 132 Hampstead Road, London NW1 2BX, UK
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Baum M, Rébiscoul D, Tardif S, Tas N, Mercury L, Rieutord F. X-Ray Reflectivity Analysis of SiO2 Nanochannels Filled with Water and Ions: A New Method for the Determination of the Spatial Distribution of Ions Inside Confined Media. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.proeps.2016.12.146] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Baum M, Überschaer A. When do employer awards pay off and when do they not? The impact of award familiarity on applicants’ job pursuit intentions and the moderating role of corporate brand awareness. The International Journal of Human Resource Management 2016. [DOI: 10.1080/09585192.2016.1254101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Matthias Baum
- Faculty of Business Studies and Economics, University of Kaiserslautern , Kaiserslautern, Germany
| | - Anja Überschaer
- Faculty of Business Studies and Economics, University of Kaiserslautern , Kaiserslautern, Germany
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Abstract
Purpose
– The purpose of this paper is to build on previous studies on the link between objective and subjective person-organization fit (P-O fit) and argue that the strength between objective and subjective fit is contingent on advertisement attractiveness and organizational image. Accordingly, the authors observe if advertisement attractiveness and organizational image help to strengthen the objective-subjective P-O fit relation.
Design/methodology/approach
– The authors conduct a survey among 942 individuals and compare between prospective jobseeker (n=629) and actual jobseeker (n=313) subsamples.
Findings
– Generally, the authors show that ad advertisements positively moderates the relation between objective and subjective fit. Moreover, the authors show that advertisement attractiveness moderates the relationship between objective and subjective fit for prospective jobseekers while the moderating influence of advertisement attractiveness is not significant for actual jobseekers. Organizational image, however, is shown to act as a negative moderator, particularly for the actual jobseeker sample.
Research limitations/implications
– The authors aim to contribute to prior research by emphasizing how the link between objective and subjective P-O fit can be elevated by cues such as advertisement attractiveness and might be disturbed by a very good organizational image.
Practical implications
– This study informs practitioners how two important recruitment signals, job advertisement and organizational image, influence the transmission of objective into subjective fit and thus help firms to improve their recruitment efforts.
Originality/value
– Even though many studies support the effects of P-O fit on organizational attractiveness or application intentions, only little is known in terms of how the relationship between the two dimensions of P-O fit – objective and subjective fit – can be positively influenced. Hence, there is a lack of understanding of how firms can focus their recruitment efforts effectively on highly fitting individuals.
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Baum M, Hubner S. Effectuation, Entrepreneurs Leadership Behavior, and Employee Outcomes:A Conceptual Model. IJEV 2016. [DOI: 10.1504/ijev.2016.10006914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Stein J, Baum M, Holbein S, Cronert T, Hutanu V, Komarek AC, Braden M. Control of multiferroic domains by external electric fields in TbMnO₃. J Phys Condens Matter 2015; 27:446001. [PMID: 26452106 DOI: 10.1088/0953-8984/27/44/446001] [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] [Indexed: 06/05/2023]
Abstract
The control of multiferroic domains through external electric fields has been studied by dielectric measurements and by polarized neutron diffraction on single-crystalline TbMnO3. Full hysteresis cycles were recorded by varying an external field of the order of several kV mm(-1) and by recording the chiral magnetic scattering as well as the charge in a sample capacitor. Both methods yield comparable coercive fields that increase upon cooling.
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Affiliation(s)
- J Stein
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
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Tadesse W, Ogbonnaya FC, Jighly A, Sanchez-Garcia M, Sohail Q, Rajaram S, Baum M. Genome-Wide Association Mapping of Yield and Grain Quality Traits in Winter Wheat Genotypes. PLoS One 2015; 10:e0141339. [PMID: 26496075 PMCID: PMC4619745 DOI: 10.1371/journal.pone.0141339] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 10/07/2015] [Indexed: 11/19/2022] Open
Abstract
The main goal of this study was to investigate the genetic basis of yield and grain quality traits in winter wheat genotypes using association mapping approach, and identify linked molecular markers for marker assisted selection. A total of 120 elite facultative/winter wheat genotypes were evaluated for yield, quality and other agronomic traits under rain-fed and irrigated conditions for two years (2011–2012) at the Tel Hadya station of ICARDA, Syria. The same genotypes were genotyped using 3,051 Diversity Array Technologies (DArT) markers, of which 1,586 were of known chromosome positions. The grain yield performance of the genotypes was highly significant both in rain-fed and irrigated sites. Average yield of the genotypes ranged from 2295 to 4038 kg/ha and 4268 to 7102 kg/ha under rain-fed and irrigated conditions, respectively. Protein content and alveograph strength (W) ranged from 13.6–16.1% and 217.6–375 Jx10-4, respectively. DArT markers wPt731910 (3B), wPt4680 (4A), wPt3509 (5A), wPt8183 (6B), and wPt0298 (2D) were significantly associated with yield under rain-fed conditions. Under irrigated condition, tPt4125 on chromosome 2B was significantly associated with yield explaining about 13% of the variation. Markers wPt2607 and wPt1482 on 5B were highly associated with protein content and alveograph strength explaining 16 and 14% of the variations, respectively. The elite genotypes have been distributed to many countries using ICARDA’s International system for potential direct release and/or use as parents after local adaptation trials by the NARSs of respective countries. The QTLs identified in this study are recommended to be used for marker assisted selection after through validation using bi-parental populations.
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Affiliation(s)
- W. Tadesse
- International Center for Agricultural Research in the Dry Areas (ICARDA), Beirut, Lebanon
- * E-mail:
| | - F. C. Ogbonnaya
- International Center for Agricultural Research in the Dry Areas (ICARDA), Beirut, Lebanon
| | - A. Jighly
- International Center for Agricultural Research in the Dry Areas (ICARDA), Beirut, Lebanon
| | - M. Sanchez-Garcia
- International Center for Agricultural Research in the Dry Areas (ICARDA), Beirut, Lebanon
| | - Q. Sohail
- International Center for Agricultural Research in the Dry Areas (ICARDA), Beirut, Lebanon
| | - S. Rajaram
- International Center for Agricultural Research in the Dry Areas (ICARDA), Beirut, Lebanon
| | - M. Baum
- International Center for Agricultural Research in the Dry Areas (ICARDA), Beirut, Lebanon
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Topcic M, Baum M, Kabst R. Are high-performance work practices related to individually perceived stress? A job demands-resources perspective. The International Journal of Human Resource Management 2015. [DOI: 10.1080/09585192.2015.1043136] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Jäckle-Meyer I, Gwinner W, Baum M, Soose M, Petzoldt R, Schmoll HJ, Stolte H. Significance of Tamm-Horsfall protein excretion in diabetes mellitus and cisplatin nephrotoxicity. Contrib Nephrol 2015; 83:124-9. [PMID: 2100702 DOI: 10.1159/000418787] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Vaidya J, Bulsara M, Wenz F, Tobias J, Joseph D, Massarut S, Flyger H, Eiermann W, Saunders C, Alvarado M, Brew-Graves C, Potyka I, Williams N, Baum M. OC-0472: Whole breast radiotherapy does not affect growth of cancer foci in other quadrants: results from the TARGIT Atrial. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40467-0] [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: 10/23/2022]
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Guérard M, Baum M, Bitsch A, Eisenbrand G, Elhajouji A, Epe B, Habermeyer M, Kaina B, Martus H, Pfuhler S, Schmitz C, Sutter A, Thomas A, Ziemann C, Froetschl R. Assessment of mechanisms driving non-linear dose–response relationships in genotoxicity testing. Mutation Research/Reviews in Mutation Research 2015; 763:181-201. [DOI: 10.1016/j.mrrev.2014.11.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 10/31/2014] [Accepted: 11/01/2014] [Indexed: 01/15/2023]
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Abstract
I welcome this opportunity to comment on the piece by Dr. Steven Narod in this issue of Current Oncology.[...]
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Affiliation(s)
- M Baum
- Professor Emeritus of Surgery and Visiting Professor of Medical Humanities, University College, London, U.K
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Baum M, Schantz M, Leick S, Berg S, Betz M, Frank K, Rehage H, Schwarz K, Kulozik U, Schuchmann H, Richling E. Is the antioxidative effectiveness of a bilberry extract influenced by encapsulation? J Sci Food Agric 2014; 94:2301-2307. [PMID: 24395460 DOI: 10.1002/jsfa.6558] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [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: 07/14/2013] [Revised: 11/29/2013] [Accepted: 01/06/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Bilberries (Vaccinium myrtillus L.) have been suggested to have preventive properties against diseases associated with oxidative stress such as colon cancer or inflammatory bowel diseases. Therefore the gastrointestinal tract is regarded as a potential target for prevention. In this study the antioxidative properties of a commercially available anthocyanin-rich bilberry extract (BE) were investigated in comparison with four different BE-loaded microcapsule systems. As markers to describe the antioxidant status in this cellular system, intracellular reactive oxygen species (ROS) levels, oxidative DNA damage and total glutathione (tGSH) levels were monitored. RESULTS Incubations with the BE-loaded capsule systems showed an increase in cellular glutathione levels and reduction of ROS levels at high BE concentrations (100-500 µg mL(-1) ) and a positive effect on the formation of DNA strand breaks (5-10 µg mL(-1) BE). The biological properties of BE-loaded pectin amide core-shell capsules, whey protein matrix capsules and coated apple pectin matrix capsules were comparable to those of the non-encapsulated BE. CONCLUSION Overall, the BE and the encapsulated BE types tested have antioxidative activity under the studied assay conditions in terms of the prevention of oxidative DNA damage, the reduction of intracellular ROS and the enhancement of cellular tGSH.
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Affiliation(s)
- Matthias Baum
- Department of Chemistry, Division of Food Chemistry and Toxicology, Molecular Nutrition, Technische Universität Kaiserslautern, Kaiserslautern, Germany
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Salter PS, Baum M, Alexeev I, Schmidt M, Booth MJ. Exploring the depth range for three-dimensional laser machining with aberration correction. Opt Express 2014; 22:17644-56. [PMID: 25089384 DOI: 10.1364/oe.22.017644] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The spherical aberration generated when focusing from air into another medium limits the depth at which ultrafast laser machining can be accurately maintained. We investigate how the depth range may be extended using aberration correction via a liquid crystal spatial light modulator (SLM), in both single point and parallel multi-point fabrication in fused silica. At a moderate numerical aperture (NA = 0.5), high fidelity fabrication with a significant level of parallelisation is demonstrated at the working distance of the objective lens, corresponding to a depth in the glass of 2.4 mm. With a higher numerical aperture (NA = 0.75) objective lens, single point fabrication is demonstrated to a depth of 1 mm utilising the full NA, and deeper with reduced NA, while maintaining high repeatability. We present a complementary theoretical model that enables prediction of the effectiveness of SLM based correction for different aberration magnitudes.
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