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Gerber S, Silver RE, Das SK, Greene SS, Dix SR, Ramirez I, Morcos CL, Dao MC, Ceglia L, Roberts SB. Development and Feasibility of an eHealth Diabetes Prevention Program Adapted for Older Adults-Results from a Randomized Control Pilot Study. Nutrients 2024; 16:930. [PMID: 38612963 DOI: 10.3390/nu16070930] [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: 02/19/2024] [Revised: 03/11/2024] [Accepted: 03/13/2024] [Indexed: 04/14/2024] Open
Abstract
Lifestyle programs that reduce health risks and support weight loss (WL) in older adults face adherence and attendance challenges due to reduced energy requirements, impaired mobility, lack of transportation, and low social support. Tailored lifestyle and weight management programs are needed to better support healthy aging for older adults. Here, we developed and piloted an age-adapted, remotely delivered modification of the Diabetes Prevention Program (DPP). The modification includes age-appropriate goals, visuals, and examples; flexible dietary composition; remote classroom and fitness-monitoring technology; and standardized online classroom materials employing pedagogical and behavior change theory. The modifications were designed to safeguard fidelity and to boost adherence, engagement, and knowledge integration, with the convenience of a fully remote WL program for diverse older adults. Six-month pilot data are presented from older adults (55-85 years, body mass index (BMI) 27-39.9 kg/m2, N = 20) randomly allocated to an online DPP intervention with weight, diet, and activity monitored remotely, or into a waitlisted control. The intervention achieved 100% attendance and adherence to self-monitoring. The intervention group mean (±SD) body weight change was -9.5% (±4.1); 90% lost ≥ 5%. By contrast, the control group gained 2.4% (±1.8). Once thought incompatible with older adults, remote interventions are feasible for older adults and can support fidelity, adherence, engagement, and clinically significant WL. Standardized materials are provided for future implementation.
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Affiliation(s)
- Suzannah Gerber
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, 150 Harrison Avenue, Boston, MA 02111, USA
| | - Rachel E Silver
- Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA 02111, USA
| | - Sai Krupa Das
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, 150 Harrison Avenue, Boston, MA 02111, USA
- Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA 02111, USA
| | - Savana S Greene
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, 150 Harrison Avenue, Boston, MA 02111, USA
| | - Sadie R Dix
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, 150 Harrison Avenue, Boston, MA 02111, USA
| | - Isabella Ramirez
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, 150 Harrison Avenue, Boston, MA 02111, USA
| | - Christina L Morcos
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, 150 Harrison Avenue, Boston, MA 02111, USA
| | - Maria Carlota Dao
- Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham, NH 03824, USA
| | - Lisa Ceglia
- Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA 02111, USA
- Division of Endocrinology, Diabetes and Metabolism, Tufts Medical Center, Boston, MA 02111, USA
| | - Susan B Roberts
- Geisel School of Medicine, Dartmouth College, 1 Rope Ferry Rd., Hanover, NH 03755, USA
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Price JK, de Avila L, Stepanova M, Weinstein AA, Pham H, Keo W, Racila A, Gerber S, Lam BP, Gerber LH, Younossi ZM. Severe, Persistent, Disruptive Fatigue Post-SARS-CoV-2 Disproportionately Affects Young Women. Int J Gen Med 2023; 16:4393-4404. [PMID: 37789881 PMCID: PMC10544141 DOI: 10.2147/ijgm.s423910] [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: 07/26/2023] [Accepted: 09/14/2023] [Indexed: 10/05/2023] Open
Abstract
Introduction Post-acute SARS-CoV-2 (PASC) symptoms are often persistent, disruptive, and difficult to treat effectively. Fatigue is often among the most frequently reported symptoms and may indicate a more challenging road to recovery. Purpose To describe the natural history, symptomology, and risk profile of long-term post-acute SARS-CoV-2. Patients and Methods Participants treated for SARS-CoV-2 within a large, community health system in the US were enrolled prospectively in a longitudinal, observational PASC study examining participants at enrollment and 6 months. Medical history, symptom reporting, validated measures of cognition, and patient-reported outcomes (PROs), were performed for all participants and repeated during study follow-up visits. Results A total of 323 participants completed baseline evaluations. Sixty one participants indicated clinically significant fatigue (23.1% at baseline); a representative sample of 141 enrollees also completed a baseline Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F) in-depth fatigue reporting questionnaire, 37 had severe fatigue. The severely fatigued (FACIT-F ≤29.7) were significantly younger, female, had more anxiety and depression, had a higher resting heart rate, reported more sick days, and were less physically active post-COVID. They were more likely to have a diagnosis of chronic kidney disease (13.5% vs 2.9%) but less likely to have a history of cancer (8.1% vs 23.1). Participants who were severely fatigued reported health, diet, weight, and sleep were worse than those not severely fatigued post-COVID (p = 0.02 to 0.0002). Fatigue was significantly correlated with impairment of all PROs administered after COVID-19 infection. Conclusion Fatigue is a common symptom post-COVID-19 infection and is associated with lower reported well-being and function. Those with severe fatigue tended to be younger and female and have a past medical history of anxiety, depression, kidney disease, and more sedentary lifestyles.
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Affiliation(s)
- Jillian Kallman Price
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Leyla de Avila
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Maria Stepanova
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
- Center for Liver Disease, Department of Medicine, Inova Fairfax Medical Campus, Falls Church, VA, USA
- Inova Medicine, Inova Health System, Falls Church, VA, USA
| | - Ali A Weinstein
- Department of Global and Community Health, George Mason University, Fairfax, VA, USA
| | - Huong Pham
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Wisna’odom Keo
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Andrei Racila
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Suzannah Gerber
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Brian P Lam
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
- Center for Liver Disease, Department of Medicine, Inova Fairfax Medical Campus, Falls Church, VA, USA
- Inova Medicine, Inova Health System, Falls Church, VA, USA
| | - Lynn H Gerber
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
- Inova Medicine, Inova Health System, Falls Church, VA, USA
| | - Zobair M Younossi
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
- Center for Liver Disease, Department of Medicine, Inova Fairfax Medical Campus, Falls Church, VA, USA
- Inova Medicine, Inova Health System, Falls Church, VA, USA
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Gerber S, O'Hearn M, Cruz SM, Reedy J, Mozaffarian D. Changes in Food Security, Healthfulness, and Access During the Coronavirus Disease 2019 Pandemic: Results From a National United States Survey. Curr Dev Nutr 2023; 7:100060. [PMID: 36937244 PMCID: PMC9968449 DOI: 10.1016/j.cdnut.2023.100060] [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: 11/15/2022] [Revised: 02/15/2023] [Accepted: 02/18/2023] [Indexed: 02/27/2023] Open
Abstract
Background Coronavirus disease 2019 (COVID-19) disrupted access to food and adequate nutrition and the types of foods consumed. However, little empiric data exists on the changes in American's food and nutrition habits 2 y into the pandemic. Objectives To assess current and altered food choices ∼2 y into the COVID-19 pandemic in the months after historic public pandemic relief. Methods A national sample of 1878 United States adults balanced by age, sex, race/ethnicity, and income completed a one-time, online, semi-quantitative, 44-item questionnaire in Fall 2021 asking about the demographics, COVID-19 food choice changes (including free-text), and consumer priorities. This analysis investigates COVID-19 impacts on food security, healthfulness, and access. Results More than 35% of respondents reported improved food security and >45% reported improved food healthfulness compared with prepandemic status. Improvement was reported in more than 30% of Black/African-American and Hispanic/Latinx adults, adults with lower annual income, and female sex, despite over 75% reporting reduced choice of where to eat or buy food. The pandemic offered occasion for many to improve diet, but a similar number expressed that the pandemic destabilized healthy habits. Conclusions Our novel findings suggest that by late 2021, most Americans had improved food security and food choice healthfulness, despite reduced access to food service and retail, although with worsening among a meaningful proportion of Americans as well as heterogeneity in these changes. Vigorous federal, state, city, and community responses to the pandemic may have played a role in improving the food security and food choice healthfulness during the COVID-19 pandemic. Health crises differently impact health behaviors, but when accompanied by vigorous civic and community response, food security, and food healthfulness can be fortified.
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Affiliation(s)
- Suzannah Gerber
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, United States
- Betty and Guy Beatty Liver and Obesity Research Center, Inova Medical System, Fairfax, VA, United States
| | - Meghan O'Hearn
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, United States
| | - Sylara Marie Cruz
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, United States
| | - Julia Reedy
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, United States
| | - Dariush Mozaffarian
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, United States
- Tufts Medical Center, Tufts University School of Medicine, Boston, MA, United States
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Price JK, Gerber LH, Stepanova M, de Avila L, Weinstein AA, Pham H, Nader F, Afendy M, Terra K, Austin P, Keo W, Racila A, Estep JM, Gerber S, Verma M, Golabi P, Lam BP, Younossi Z. Post-Acute SARS-CoV-2 Symptoms are Fewer, Less Intense Over Time in People Treated with Mono-Clonal Antibodies for Acute Infection. Int J Gen Med 2023; 16:1479-1490. [PMID: 37123886 PMCID: PMC10145429 DOI: 10.2147/ijgm.s406571] [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: 02/04/2023] [Accepted: 04/01/2023] [Indexed: 05/02/2023] Open
Abstract
Introduction Many with post-acute SARS-CoV-2 (PASC) have persistent symptoms impacting physical and cognitive function, decreased health and health-related life quality. Monoclonal antibody (mAb) treatment was available to acutely infected patients which might improve these outcomes. Purpose To compare patient perception of PASC symptoms for those receiving bamlanivimab or casirivimab and imdevimab (mAbs) to those not receiving this treatment (non-mAbs). To compare changes between these groups in symptoms, function and quality of life over a 6-month follow-up. Patients and Methods Consented adults >28 days post-infection with positive SARS-CoV-2 qPCR or antigen test and SARS-CoV-2 infection between March of 2020 and July of 2022 were enrolled. This prospective, repeated measure observational study reports baseline through 6-month follow-up. Extensive sociodemographic data, detailed medical history, COVID-19 symptom history, and standardized measures of well-being, depression, anxiety, stigma, cognition, symptom assessment, distress, and health status were collected. Results 323 participants [101 mAb, 221 non-mAb, 52.7±15.5 years, 47.7% male, body mass index (BMI) 31.4±8.4] were analyzed. Fewer symptoms at baseline were reported in mAb versus non-mAb participants (1.06±1.31 vs 1.78±2.15, respectively p=0.0177) 6 months: (0.911±1.276 mAb vs.1.75±2.22 non-mAb, p=0.0427). Both groups showed significant within-group decreases in symptom number (52 to 21 mAb, 126 to 63 non-mAb) and symptom burden (p=0.0088 mAb, p<0.00001 non-mAb). mAb patients had significantly shorter infection-to-baseline interval (days) (120.4±55.3 mAb vs 194.0±89.3 non-mAb, p<0.00001); less frequent history of myocardial infarction (0.0 vs 3.9%, p=0.0464); headache (2.0% vs.11.8%, p=0.0046), rash (3.1% vs 9.9%, p=0.0377), and miscellaneous muscle complaints (2.0% vs 12.3%, p=0.0035), plus significantly better 6-month mood. (2.2% vs 13.2%, p=0.0390). Conclusion mAb treated participants had reduced symptom burden and consistently reported fewer symptoms than non-mAb at all time points despite less time since acute illness. Both groups reported a statistically significant decrease in symptoms by 6-month visit with no statistically significant differences between them at follow-up.
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Affiliation(s)
- Jillian Kallman Price
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
- Correspondence: Jillian Kallman Price, Research Investigator, Outcomes Research, Beatty Liver and Obesity Research Program, Center for Integrated Research, Department of Medicine, Inova Health System, Claude Moore Health Education and Research Building, Inova Fairfax Medical Campus, 3300 Gallows Road, Falls Church, VA, 22042, USA, Tel +1-703-776-3032, Fax +1-703- 776-4386, Email
| | - Lynn H Gerber
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
- Inova Medicine, Inova Health System, Falls Church, VA, USA
| | - Maria Stepanova
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
- Inova Medicine, Inova Health System, Falls Church, VA, USA
- Center for Liver Disease, Department of Medicine, Inova Fairfax Medical Campus, Falls Church, VA, USA
| | - Leyla de Avila
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Ali A Weinstein
- Department of Global and Community Health, George Mason University, Fairfax, VA, USA
| | - Huong Pham
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Fatema Nader
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Mariam Afendy
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Kathy Terra
- Center for Liver Disease, Department of Medicine, Inova Fairfax Medical Campus, Falls Church, VA, USA
| | - Patrick Austin
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Wisna’odom Keo
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Andrei Racila
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - James Michael Estep
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Suzannah Gerber
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Manisha Verma
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Pegah Golabi
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Brian P Lam
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
- Inova Medicine, Inova Health System, Falls Church, VA, USA
- Center for Liver Disease, Department of Medicine, Inova Fairfax Medical Campus, Falls Church, VA, USA
| | - Zobair Younossi
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
- Inova Medicine, Inova Health System, Falls Church, VA, USA
- Center for Liver Disease, Department of Medicine, Inova Fairfax Medical Campus, Falls Church, VA, USA
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O’Hearn M, Erndt-Marino J, Gerber S, Lauren BN, Economos C, Wong JB, Blumberg JB, Mozaffarian D. Validation of Food Compass with a healthy diet, cardiometabolic health, and mortality among U.S. adults, 1999-2018. Nat Commun 2022; 13:7066. [PMID: 36414619 PMCID: PMC9681774 DOI: 10.1038/s41467-022-34195-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 10/14/2022] [Indexed: 11/23/2022] Open
Abstract
The Food Compass is a nutrient profiling system (NPS) to characterize the healthfulness of diverse foods, beverages and meals. In a nationally representative cohort of 47,999 U.S. adults, we validated a person's individual Food Compass Score (i.FCS), ranging from 1 (least healthful) to 100 (most healthful) based on cumulative scores of items consumed, against: (a) the Healthy Eating Index (HEI) 2015; (b) clinical risk factors and health conditions; and (c) all-cause mortality. Nationally, the mean (SD) of i.FCS was 35.5 (10.9). i.FCS correlated highly with HEI-2015 (R = 0.81). After multivariable-adjustment, each one SD (10.9 point) higher i.FCS associated with more favorable BMI (-0.60 kg/m2 [-0.70,-0.51]), systolic blood pressure (-0.69 mmHg [-0.91,-0.48]), diastolic blood pressure (-0.49 mmHg [-0.66,-0.32]), LDL-C (-2.01 mg/dl [-2.63,-1.40]), HDL-C (1.65 mg/d [1.44,1.85]), HbA1c (-0.02% [-0.03,-0.01]), and fasting plasma glucose (-0.44 mg/dL [-0.74,-0.15]); lower prevalence of metabolic syndrome (OR = 0.85 [0.82,0.88]), CVD (0.92 [0.88,0.96]), cancer (0.95 [0.91,0.99]), and lung disease (0.92 [0.88,0.96]); and higher prevalence of optimal cardiometabolic health (1.24 [1.16,1.32]). i.FCS also associated with lower all-cause mortality (HR = 0.93 [0.89,0.96]). Findings were similar by age, sex, race/ethnicity, education, income, and BMI. These findings support validity of Food Compass as a tool to guide public health and private sector strategies to identify and encourage healthier eating.
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Affiliation(s)
- Meghan O’Hearn
- grid.429997.80000 0004 1936 7531Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA USA
| | | | - Suzannah Gerber
- grid.429997.80000 0004 1936 7531Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA USA
| | - Brianna N. Lauren
- grid.429997.80000 0004 1936 7531Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA USA
| | - Christina Economos
- grid.429997.80000 0004 1936 7531Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA USA
| | - John B. Wong
- grid.67033.310000 0000 8934 4045Tufts Medical Center, Tufts University School of Medicine, Boston, MA USA ,grid.67033.310000 0000 8934 4045Tufts Medical Center, Institute for Clinical Research and Health Policy Studies, Boston, MA USA
| | - Jeffrey B. Blumberg
- grid.429997.80000 0004 1936 7531Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA USA
| | - Dariush Mozaffarian
- grid.429997.80000 0004 1936 7531Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA USA ,grid.67033.310000 0000 8934 4045Tufts Medical Center, Tufts University School of Medicine, Boston, MA USA
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Gerber S, Folta SC. You Are What You Eat… But Do You Eat What You Are? The Role of Identity in Eating Behaviors—A Scoping Review. Nutrients 2022; 14:nu14173456. [PMID: 36079713 PMCID: PMC9458161 DOI: 10.3390/nu14173456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/19/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 11/25/2022] Open
Abstract
Background: Identity is a major construct in the fields of psychology and anthropology that can relate to both the maintenance of eating behaviors and cultural sensitivity. However, there has not been any systematic effort to understand the role of identity in eating behaviors and the maintenance of eating behaviors, or to address multiple aspects of identity within an individual across scientific disciplines. This scoping review aims to understand and describe existing research relating identity to eating behaviors and to detail the measurement of identity. Methods: We conducted a systematic search of Ovid, PsychINFO, Embase, and Web of Science for articles on identity and eating behaviors published between January 1946 and March 2022. We utilized the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) checklist, and search methods were developed with the assistance of a research librarian. We rated articles from 1 to 5 based on the depth, complexity, and multi-dimensionality of the identity measurement conducted. Scoring criteria included a review of the number of items directly querying or evaluating identity and the extent of measurement of identity domains. Results: In total, 100 articles were included, examining 10 different identities, 8 identity constructs, 11 eating behaviors, and construct contributions from 26 theories. The mean score of all articles was 2.9 on the scale from 1 to 5. A total of 10 studies scored a “1”; 30 scored a “2”, indicating the use of 1–2 basic questions about identity; 31 received a “3” for use of a common but non-complex identity instrument; 19 received a “4”, meaning they contained strong evaluation and included multiple types of identity but were lacking in terms of depth of measure and/or the comparison of identity effects to constructs; and 10 scored a “5” for their strong, in-depth measure of identity and inclusion of multiple types. Identity was found to be significantly related to eating behaviors in all but one study. Conclusion: Identity measurements seldom accounted for complexities such as multiple identities and identity shifting over time. Nonetheless, our findings indicate that multiple aspects of identity reciprocally reinforce behavior and that change maintenance is associated with identity salience and centrality. Identity is underutilized and heterogeneously applied in eating behavior research. The inclusion of identity assessments may lead to better outcomes being obtained within differing cultural, normative, and environmental scenarios.
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Affiliation(s)
- Suzannah Gerber
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA
- Betty and Guy Beatty Liver and Obesity Research Program, Inova Medical System, Falls Church, VA 22043, USA
- Correspondence:
| | - Sara C. Folta
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA
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Gerber S, Masters W. Nutrient Composition of Plant-Based Substitutes for Animal-Sourced Foods: Evidence From Packaged and Processed Meats in 30 Countries. Curr Dev Nutr 2022. [PMCID: PMC9193486 DOI: 10.1093/cdn/nzac059.013] [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: 11/26/2022] Open
Abstract
Objectives To compare the nutrient composition of plant-based (PB) to animal-sourced (AS) items sold in 30 countries, and identify associated changes in national nutrient supply. Methods Using Euromonitor data from 30 countries for 2015–2021 we identified the main items contributing to PB and AS processed meat sales, and used their nutrient composition (calories, total fat, saturated fat, carbohydrate, fiber, sugar, protein, and sodium) to quantify the impacts of change in sales on the nutrient density of sales in each country and in total. Results Since 2014 total calories from PB meat rose a total of 3.1%/yr to 9.9 million kcal in 2021, in contrast to sales of AS processed meat which rose by about 1%/yr to 30.6 million kcal. In 2021, the energy in AS processed meat was 59% fat (22% kcal from saturated fats), 28% protein and 10% carbohydrates (3% kcal from sugar), with 0.21 g fiber, and 1.07 g sodium per 100 kcal. In comparison, energy in PB meats sold in 2021 was 41% fat (8% kcal from saturated fat), 31% protein and 13% carbohydrate (2% kcal from sugar), 2.17 g fiber and 0.56 g sodium per 100 kcal. The average annual changes in sugar were + 11% in AS and −4.1% in PB; sodium + 4% in PB and −1% in AS; and saturated fat + 12.6% in PB and −0.2% in AS. Conclusions Isocaloric substitution of PB meat for AS processed meats would lower density by 14% for saturated fats and 18% for total fats, while raising density by 3% for both protein and carbohydrates, raising fiber intake by 1.99 g/100 kcal, and lowering sodium intake by 0.51 g/100 kcal. Differences between items, and reformulation over time of both AS and PB products would affect these results and may explain observed changes in this period. On average since 2015, the rise of PB meats has led to healthier food composition of the processed meats category regarding these nutrients of concern. Overall, PB alternatives have a preferential nutritional profile to AS processed meat. Funding Sources NIFA National Needs Fellowship.
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Gerber S, Rogers G, Staffier K, Karlsen M, Folta S, Jacques P, Naumova E, McKeown N. Adherence, Compliance, and Diet Quality Among Popular Diet Followers. Curr Dev Nutr 2022. [PMCID: PMC9193519 DOI: 10.1093/cdn/nzac054.019] [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: 12/02/2022] Open
Abstract
Objectives 1. To compare diet quality of vegan, vegetarian, paleo, and whole-food plant-based (WFPB) diets; 2. To examine how adherence varies by diet and relates to quality and diet duration; 3. To examine how compliance varies by diet and relates to quality, adherence, and duration. Methods Analysis was conducted on a subsample of ADAPT participants (n = 1392) who completed a demographics and food frequency questionnaire (FFQ; DHQ-II). After excluding implausible energy intake (600 ≤ KCAL < 5,000), the final sample was 1291 (vegan [n = 355]; vegetarian [n = 90]; WFPB [n = 710]; paleo [n = 136]). Diet quality was measured with HEI and AHEI. Duration was categorized as short [<2 years (n = 501)]; moderate [2 to <7 y (n = 200)]; and long-term [7–10 + y (n = 592)]. A self-report adherence score was derived from questions targeting commitment to diet, ranging from 0–32. Compliance score for each diet was derived from reported intakes and DHQ-II (i.e., diet-specific restrictions), and data were %-based standardized. Models were adjusted for age and sex; select models were adjusted for diet duration. Results Mean (SD) HEI score was high in all plant-based diets, highest for WFPB 76.7(5.8), vegan 75.7 (6.5), vegetarian 72.6 (9.2), compared to paleo 62.5 (8.5); and with a similar ranking for AHEI. Vegans had highest mean adherence 23.5 (2.8) and paleos the lowest 20.0 (3.3). Vegetarians had highest mean compliance 71% (9) and WFPB lowest 53% (10). Compliance was positively associated with HEI score for WFPB and vegan with one percentage point of compliance associated with a 6.4-point increase in HEI for WFPB (SE ± 2, p < .004) and 17.1 for vegan (SE ± 4, p < .0001). For every point increase in compliance, adherence improved (5.4 ± 0.8, p < .0001) in the full sample, and by diet group. Diet duration was significantly associated with adherence in all but vegetarian. No relationship was observed between duration and compliance within diet. Conclusions WFPB and vegan diets had the highest diet quality; all four had higher mean HEI than reported average in US adults (HEI = 59). Findings suggest that even imperfect compliance to plant-based diets is associated with greater diet quality. Diet adherence is a complex component of eating behavior, however reported adherence appears to predict higher compliance and longer maintenance. Funding Sources USDA Cooperative Agreements; NIFA National Needs Fellowship.
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Affiliation(s)
| | | | | | | | | | - Paul Jacques
- Tufts USDA Human Nutrition Research Center on Aging
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Gerber S, Reedy J, O'Hearn M, Cruz SM, Mozaffarian D. US Food and Nutrition Security During COVID-19 in Late 2021. Curr Dev Nutr 2022. [PMCID: PMC9193726 DOI: 10.1093/cdn/nzac048.016] [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
Abstract
Objectives
To assess current and altered food habits about two years into the COVID-19 pandemic.
Methods
We recruited a national sample of 1,878 adults balanced by age (18–34 years, 35–49, 50–64, 65+); sex (male, female); race/ethnicity (Non-Hispanic White, Hispanic/Latinx, Non-Hispanic Black/African-American, Asian/Other); and income (<25k/year, 25k-<50k, 50-<100k, >100k). In fall 2021, participants completed a 44-item survey asking about demographics, priorities for food businesses and products, and a 5-item section on food habit changes due to COVID-19.1420 participants added free-text to explain changes in food habits which were evaluated for themes.
Results
12% of respondents (n = 223) reported worsened food security, 49% (n = 914) reported about same, and 39% (n = 722) reported improved food security compared to pre-pandemic. 11% (n = 200) reported worsened, 42% (n = 784) reported the same, and 47% (n = 878) reported improved healthfulness of food choices. Changes in food security explained 27% of the variance in changes in healthfulness of food choice (p < 0.05). 20% of respondents (n = 370) reported having less ability to choose where they eat. Nearly twice as many (39%, n = 737) reported that it stayed the same or improved (40%, n = 747). 12% (n = 229) reported less ability to choose where to buy food, 48% reported the same (n = 904), and 39% (n = 731) reported improved ability. Changes did not differ dramatically by age, sex, race/ethnicity, or income. Six common themes of pandemic changes in food habits were reduced restaurant dining, increased food delivery, reduced soft drink consumption, more eating at home, taking the opportunity to eat healthy, and more bulk and discount shopping online.
Conclusions
As Americans adapt to the pandemic, these novel data identify perceived effects on food and nutrition security. These data illustrate relative resiliency in both food security and the healthfulness of food choices, and pandemic-related opportunities to increase healthfulness of dietary choices, in a diverse national sample.
Funding Sources
Vail Innovative Global Research & NIFA National Needs Fellowship.
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10
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Gerber S, Reedy J, O'Hearn M, Cruz SM, Mozaffarian D. How Americans Define Health for Food and Beverages. Curr Dev Nutr 2022. [PMCID: PMC9193890 DOI: 10.1093/cdn/nzac059.012] [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: 12/05/2022] Open
Abstract
Objectives To assess how American adults consider and define healthfulness of food and beverages. Methods In Fall 2021, a national sample of 1,878 adults balanced by age (18–34 years, 35–49, 50–64, 65+), sex, race/ethnicity (Non-Hispanic White, Hispanic/Latinx, Non-Hispanic Black, Asian/other), and annual income, completed an online survey asking about demographics and priorities for food businesses and product purchases, including select-all and agreement rated items on definitions of healthfulness for food and beverages. Pearson's r and Jaccard Index were used to assess correlation (PCC) and choice similarity, respectively. Results Among 12 definitions of healthfulness, respondents most commonly chose nutritionally balanced (67%); all natural (56%); supports health outcomes (55%); and full of vitamins and minerals (52%); followed by organic (41%); safe to eat (41%); specific nutrient profile (38%); locally grown/culturally relevant (27%); supports weight loss (25%); non-GMO (23%); aids athletic/physical performance (16%); popular diet (13%). These perceptions varied by race/ethnicity and age. Nutritionally balanced was selected by 78% of Asian/other adults and 82% of 65 + y adults, vs. White (69%), Black (64%), or Hispanic/Latinx (61%) adults; or 50–65 y (75%), 35–49 y (59%), 18–34 y (57%). Findings were more similar by income. PCC was highest for nutritionally balanced and: full of vitamins (0.81); supports health outcomes (0.80); and all natural (0.76). Jaccard similarity was < 0.55 for all definition pairs except organic and safe to eat (0.99). Conclusions In a large, diverse national sample of US adults, consumers most defined healthfulness of food and beverages as nutritionally balanced, all natural, or supports health outcomes. Organic, supports weight loss, and non-GMO were much less reported as definitions of product healthfulness. No single definition was selected by >2/3of US adults; and combined with low Jaccard values, suggests a lack of consensus on simple definitions of healthfulness. Concepts were prioritized differently by age and race/ethnicity, but much less by income. These novel findings have implications for health communications, education, and guidance aimed at reducing consumer confusion about healthier food and beverage choices. Funding Sources Vail Innovative Global Research; NIFA National Needs Fellowship.
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11
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Gerber S, Price J, Gerber L, Weinstein A, Younossi Z. Diet Satisfaction and Adequate Food Intake in Patients with Chronic Liver Diseases. Curr Dev Nutr 2022. [PMCID: PMC9193590 DOI: 10.1093/cdn/nzac047.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Objectives To describe relationships between diet satisfaction, ability to eat, and CLD. Methods Data collected from 354 patients with CLD was used for this analysis, including 2 items from the validated Chronic Liver Disease Questionnaire (CLDQ): item 7 “ability to eat as much as you like” (EA), and item 14 “bothered by a limitation of your diet” (SWD). Results were stratified by existing diagnosis (Cirrhosis and all-type Hepatitis) and severity of disease [Childs-Pugh score (CP-A, mild; CP-B, moderate; CP-C, severe)]; AST (abnormal > 40 U/L) and ALT (abnormal > 55 U/L). Ordinal Logistic Regression, with odds and likelihood ratios, modeled disease severity CP A-C; general linear models examined EA and SWD. All models adjusted for age and sex. Results 354 CLD patients were included [mean age 50.4y (±11.2); 51% male; 222 cirrhosis; 145 hepatitis; 135 with abnormal AST; 131 abnormal ALT; 100 had CP score A; 83 CP-B; 38 CP-C] Of those included, 31% (n = 110) reported low EA (EA-L), and 25% (n = 88) reported low SWD (SWD-L). In patients with cirrhosis, 36% (n = 80) reported EA-L, and 33% (n = 73) SWD-L. 30% (n = 43) of patients with hepatitis reported EA-L, and 22% SWD-L. 33% (n = 45) of patients with abnormal AST reported EA-L, 30% (n = 41) SWD-L; 40% (n = 52) of those with abnormal ALT reported EA-L, 35% (n = 46) SWD-L. 50% (n = 19) with CP-C had EA-L, 63% (n = 24) SWD-L. 43% (n = 36) with CP-B had EA-L, 39% (n = 32) SWD-L. 25% (n = 25) with CP-A had EA-L, 17% (n = 17) SWD-L. Worsening CP scores were 22.68x (p = .0004) more likely associated with EA-L; the odds of patients with CP-C reporting EA-L was 3.3x greater compared normal CP. Similarly, worse CP scores were 56.99x (p < .0001) more likely associated with SWD-L; odds of patients with CP-C reporting SWD-L were 16.2x greater compared to normal. EA described 23% of variance in SWD (p < .0001), and SWD explained 25% of the variance in EA (p < .0001). Sex was significantly associated with SWD (0.55 ± 0.2, p < .0001), age was not. Neither were significant for EA. Conclusions EA-L and SWD-L strongly relate to worsening disease severity as documented by CP scores. Diet satisfaction and ability to eat as much as you like should be monitored closely for patients with CLD, especially those with cirrhosis because these symptoms signal loss of lean mass– a health risk, and one that may preclude eligibility for life-saving liver transplantation. Funding Sources NIFA National Needs Fellowship
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12
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Koeppen K, Hampton T, Kolling F, Gerber S, Stanton B. 471: Short RNAs in extracellular vesicles secreted by human airway epithelial cells increase antibiotic sensitivity of Pseudomonas aeruginosa. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01895-6] [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: 10/20/2022]
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13
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Booysen MJ, Gerber S. Water scarcity and poverty: The lasting impact of a maintenance campaign at South African schools across the affluence divide. Water Sci Technol 2021; 84:3246-3256. [PMID: 34850725 DOI: 10.2166/wst.2021.424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Water features prominently in discussions on sustainability. The recent Cape Town 'Day Zero' drought heightened fears about global cities running dry as the climate changes. During that crisis a campaign was launched to save water at schools, consisting of a basic maintenance campaign and a behavioural campaign. The former was limited to easy fixes, and the latter comprised an information campaign and an information and competition campaign. The impacts of these were assessed immediately after the interventions. This paper revisits the maintenance results by assessing the difference in responses according to affluence levels of the schools, and by evaluating the impacts one year after the campaigns. We find that the poorer schools were not able to sustain the maintenance gains, especially at the primary schools.
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Affiliation(s)
- M J Booysen
- Department Electrical and Electronic Engineering, Stellenbosch University, Private Bag X1, Stellenbosch, 7600, South Africa E-mail:
| | - S Gerber
- Department Electrical and Electronic Engineering, Stellenbosch University, Private Bag X1, Stellenbosch, 7600, South Africa E-mail:
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Toledano-Massiah S, Badat N, Leberre A, Bruel C, Ray A, Gerber S, Zins M, Hodel J. Unusual Brain MRI Pattern in 2 Patients with COVID-19 Acute Respiratory Distress Syndrome. AJNR Am J Neuroradiol 2020; 41:2204-2205. [PMID: 32883665 DOI: 10.3174/ajnr.a6817] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/03/2020] [Indexed: 02/01/2023]
Abstract
We report the cases of 2 patients hospitalized in our intensive care unit with confirmed coronavirus disease 2019 infection in whom brain MR imaging showed an unusual DWI pattern with nodular and ring-shaped lesions involving the periventricular and deep white matter. We discuss the possible reasons for these findings and their relationship to the infection.
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Affiliation(s)
- S Toledano-Massiah
- From the Department of Radiology (S.T.-M., N.B., A.L., S.G., M.Z., J.H.)
| | - N Badat
- From the Department of Radiology (S.T.-M., N.B., A.L., S.G., M.Z., J.H.)
| | - A Leberre
- From the Department of Radiology (S.T.-M., N.B., A.L., S.G., M.Z., J.H.)
| | | | - A Ray
- Neurology (A.R.), Fondation Hôpital Saint-Joseph, Paris, France
| | - S Gerber
- From the Department of Radiology (S.T.-M., N.B., A.L., S.G., M.Z., J.H.)
| | - M Zins
- From the Department of Radiology (S.T.-M., N.B., A.L., S.G., M.Z., J.H.)
| | - J Hodel
- From the Department of Radiology (S.T.-M., N.B., A.L., S.G., M.Z., J.H.)
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Wendelmuth M, Willam M, Todorov H, Radyushkin K, Gerber S, Schweiger S. Dynamic longitudinal behavior in animals exposed to chronic social defeat stress. PLoS One 2020; 15:e0235268. [PMID: 32701959 PMCID: PMC7377442 DOI: 10.1371/journal.pone.0235268] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 01/31/2020] [Accepted: 06/11/2020] [Indexed: 12/12/2022] Open
Abstract
Chronic social defeat (CSD) can lead to impairments in social interaction and other behaviors that are supposed to model features of major depressive disorder (MDD). Not all animals subjected to CSD, however, develop these impairments, and maintained social interaction in some animals is widely used as a model for resilience to stress-induced mental dysfunctions. So far, animals have mainly been studied shortly (24 hours and 7 days) after CSD exposure and longitudinal development of behavioral phenotypes in individual animals has been mostly neglected. We have analyzed social interaction and novel object recognition behavior of stressed mice at different time points after CSD and have found very dynamic courses of behavior of individual animals. Instead of the two groups, resilient or susceptible, that are found at early time points our data suggest four groups with (i, ii) animals behaving resilient or susceptible at early and late time points, respectively (iii) animals that start susceptible and recover with time or (iv) animals that are resilient at early time points but develop vulnerability later on.
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Affiliation(s)
- M. Wendelmuth
- Institute for Human Genetics, University Medical Center, Mainz, Germany
| | - M. Willam
- Leibniz-Institute for Resilience Research, Mainz, Germany
- * E-mail:
| | - H. Todorov
- Institute for Human Genetics, University Medical Center, Mainz, Germany
| | - K. Radyushkin
- Leibniz-Institute for Resilience Research, Mainz, Germany
| | - S. Gerber
- Institute for Human Genetics, University Medical Center, Mainz, Germany
- Computational Systems Genetics, Faculty of Biology, Institute for Developmental Biology and Neurobiology (IDN) and Center for Computational Sciences in Mainz, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - S. Schweiger
- Institute for Human Genetics, University Medical Center, Mainz, Germany
- Leibniz-Institute for Resilience Research, Mainz, Germany
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16
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Hodel J, Leclerc X, Zuber M, Gerber S, Besson P, Marcaud V, Roubeau V, Brasme H, Ganzoui I, Ducreux D, Pruvo JP, Bertoux M, Zins M, Lopes R. Structural Connectivity and Cortical Thickness Alterations in Transient Global Amnesia. AJNR Am J Neuroradiol 2020; 41:798-803. [PMID: 32381542 DOI: 10.3174/ajnr.a6530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 03/12/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Transient global amnesia (TGA) is a sudden onset of anterograde and retrograde amnesia. We aimed to assess differences in terms of cortical thickness and structural brain connectome between patients with TGA (at acute and delayed postrecovery stages) and matched controls. MATERIALS AND METHODS We report on 18 consecutive patients with TGA who underwent 3T MR imaging, including DTI and MPRAGE sequences, at the acute (mean delay postonset: 44 hours) and delayed post-recovery (mean delay: 35 days) stages. Structural connectome was assessed in patients with TGA and in 18 age- and sex-matched controls by using probabilistic fiber- tracking and segmentation of 164 cortical/subcortical structures ("nodes"). Connectivity graphs were computed and global network metrics were calculated. Network-based statistical analysis (NBS) was applied to compare patients with TGA at each stage with controls. We also compared cortical thickness between patients with TGA and healthy controls. RESULTS Global network metrics were not altered in patients with TGA. NBS-analysis showed structural connectome alterations in patients with TGA compared with controls, in core regions involving the limbic network, with 113 nodes and 114 connections (33 left intrahemispheric, 31 right intrahemispheric, and 50 interhemispheric connections) showing significantly decreased structural connectivity (P < .05 NBS corrected, t-values ranging from 3.03 to 8.73). Lower cortical thickness compared with controls was associated with these structural alterations in patients with TGA, involving the orbitofrontal, cingulate, and inferior temporal cortices. All the abnormalities were visible at both acute and delayed postrecovery stages. CONCLUSIONS Our preliminary study suggests there are structural abnormalities of the limbic network in patients with TGA compared with controls, including decreased structural connectivity and cortical thickness.
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Affiliation(s)
- J Hodel
- From the Departments of Radiology (J.H., S.G., I.G., M.Z.)
| | - X Leclerc
- Department of Neuroradiology (X.L., J.-P.P., R.L.), Roger Salengro Hospital, Lille, France
| | - M Zuber
- Neurology (M.Z., V.M., V.R., H.B.), Saint Joseph Hospital, Paris, France.,INSERM UMR S919 (M.Z.), Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - S Gerber
- From the Departments of Radiology (J.H., S.G., I.G., M.Z.)
| | - P Besson
- Department of Radiology (P.B.), Northwestern University, Feinberg School of Medicine, Chicago, Illinois
| | - V Marcaud
- Neurology (M.Z., V.M., V.R., H.B.), Saint Joseph Hospital, Paris, France
| | - V Roubeau
- Neurology (M.Z., V.M., V.R., H.B.), Saint Joseph Hospital, Paris, France
| | - H Brasme
- Neurology (M.Z., V.M., V.R., H.B.), Saint Joseph Hospital, Paris, France
| | - I Ganzoui
- From the Departments of Radiology (J.H., S.G., I.G., M.Z.)
| | - D Ducreux
- Department of Neuroradiology (D.D.), Bicêtre Hospital, Kremlin-Bicêtre, France
| | - J-P Pruvo
- Department of Neuroradiology (X.L., J.-P.P., R.L.), Roger Salengro Hospital, Lille, France
| | - M Bertoux
- University of Lille (M.B., R.L.), Inserm U1171, CHU Lille, F-59000, Lille, France
| | - M Zins
- From the Departments of Radiology (J.H., S.G., I.G., M.Z.)
| | - R Lopes
- Department of Neuroradiology (X.L., J.-P.P., R.L.), Roger Salengro Hospital, Lille, France.,University of Lille (M.B., R.L.), Inserm U1171, CHU Lille, F-59000, Lille, France
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17
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Gerber S, Pospisil L, Navandar M, Horenko I. Low-cost scalable discretization, prediction, and feature selection for complex systems. Sci Adv 2020; 6:eaaw0961. [PMID: 32064328 PMCID: PMC6989146 DOI: 10.1126/sciadv.aaw0961] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 11/22/2019] [Indexed: 06/10/2023]
Abstract
Finding reliable discrete approximations of complex systems is a key prerequisite when applying many of the most popular modeling tools. Common discretization approaches (e.g., the very popular K-means clustering) are crucially limited in terms of quality, parallelizability, and cost. We introduce a low-cost improved quality scalable probabilistic approximation (SPA) algorithm, allowing for simultaneous data-driven optimal discretization, feature selection, and prediction. We prove its optimality, parallel efficiency, and a linear scalability of iteration cost. Cross-validated applications of SPA to a range of large realistic data classification and prediction problems reveal marked cost and performance improvements. For example, SPA allows the data-driven next-day predictions of resimulated surface temperatures for Europe with the mean prediction error of 0.75°C on a common PC (being around 40% better in terms of errors and five to six orders of magnitude cheaper than with common computational instruments used by the weather services).
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Affiliation(s)
- S. Gerber
- Center of Computational Sciences, Johannes-Gutenberg-University of Mainz, PhysMat/Staudingerweg 9, 55128 Mainz, Germany
| | - L. Pospisil
- Faculty of Informatics, Universita della Svizzera Italiana, Via G. Buffi 13, 6900 Lugano Switzerland
| | - M. Navandar
- Center of Computational Sciences, Johannes-Gutenberg-University of Mainz, PhysMat/Staudingerweg 9, 55128 Mainz, Germany
| | - I. Horenko
- Faculty of Informatics, Universita della Svizzera Italiana, Via G. Buffi 13, 6900 Lugano Switzerland
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Cissokho K, Gerber S, Gerlier C. Une cause rare de pseudoparalysie radiale. Ann Fr Med Urgence 2019. [DOI: 10.3166/afmu-2019-0173] [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: 11/20/2022]
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19
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Le HM, Boch AL, Gerber S, Cornu P, Bodaghi B, Lehoang P, Touitou V. [Acute visual loss related to sphenoid meningioma]. J Fr Ophtalmol 2019; 42:485-491. [PMID: 30926270 DOI: 10.1016/j.jfo.2018.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 12/10/2018] [Accepted: 12/12/2018] [Indexed: 10/27/2022]
Abstract
Meningiomas represent about 20% of intracranial tumors. Involvement of the medial sphenoid wing includes anterior clinoid, cavernous sinus and superior orbital fissure meningiomas. Due to the proximity of these tumors to the optic nerve, typically progressive unilateral vision loss, over several months to years, is the classic clinical presentation. We report three cases of acute monocular vision loss, two transient and one permanent, ipsilateral to a sphenoid meningioma. Ophthalmological involvement with sphenoid meningiomas is most often chronic, due to interruption of axoplasmic flow and demyelination of the optic nerve by local compression. However, vascular involvement with ischemia of the optic nerve or transient low blood flow secondary to compression of the carotid branches vascularizing these structures is another possible mechanism. In our series, two patients had amaurosis fugax, and one patient had sudden, persistent visual loss in relation to acute anterior ischemic optic neuropathy on the side of the meningioma. The mean age of patients with acute visual manifestations was 62 years. These ischemic and non-compressive visual symptoms, ipsilateral to sphenoid meningiomas, are difficult to interpret. Whether these temporary visual disturbances of vascular origin should be considered an early sign of future severe or permanent visual impairment when no optic nerve compression is observed is not certain. The place of these acute visual disturbances in the therapeutic decision, particularly surgical, remains to be defined. Larger multicentric prospective studies are needed to better understand the role of local circulatory factors attributable to meningioma in the occurrence of these acute visual signs.
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Affiliation(s)
- H M Le
- Département d'ophtalmologie, DHU vision et handicaps, hôpital Pitié-Salpêtrière, 47-92, boulevard de l'Hopital, 75013 Paris, France
| | - A-L Boch
- Département de neurochirurgie, hôpital Pitié-Salpêtrière, 47-92, boulevard de l'Hopital, 75013 Paris, France
| | - S Gerber
- Département de neuroradiologie, hôpital Pitié-Salpêtrière, 47-92, boulevard de l'Hopital, 75013 Paris, France
| | - P Cornu
- Département de neurochirurgie, hôpital Pitié-Salpêtrière, 47-92, boulevard de l'Hopital, 75013 Paris, France
| | - B Bodaghi
- Département d'ophtalmologie, DHU vision et handicaps, hôpital Pitié-Salpêtrière, 47-92, boulevard de l'Hopital, 75013 Paris, France
| | - P Lehoang
- Département d'ophtalmologie, DHU vision et handicaps, hôpital Pitié-Salpêtrière, 47-92, boulevard de l'Hopital, 75013 Paris, France
| | - V Touitou
- Département d'ophtalmologie, DHU vision et handicaps, hôpital Pitié-Salpêtrière, 47-92, boulevard de l'Hopital, 75013 Paris, France.
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20
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Doser M, Aghion S, Amsler C, Bonomi G, Brusa RS, Caccia M, Caravita R, Castelli F, Cerchiari G, Comparat D, Consolati G, Demetrio A, Di Noto L, Evans C, Fanì M, Ferragut R, Fesel J, Fontana A, Gerber S, Giammarchi M, Gligorova A, Guatieri F, Haider S, Hinterberger A, Holmestad H, Kellerbauer A, Khalidova O, Krasnický D, Lagomarsino V, Lansonneur P, Lebrun P, Malbrunot C, Mariazzi S, Marton J, Matveev V, Mazzotta Z, Müller SR, Nebbia G, Nedelec P, Oberthaler M, Pacifico N, Pagano D, Penasa L, Petracek V, Prelz F, Prevedelli M, Rienaecker B, Robert J, Røhne OM, Rotondi A, Sandaker H, Santoro R, Smestad L, Sorrentino F, Testera G, Tietje IC, Widmann E, Yzombard P, Zimmer C, Zmeskal J, Zurlo N. AEgIS at ELENA: outlook for physics with a pulsed cold antihydrogen beam. Philos Trans A Math Phys Eng Sci 2018; 376:20170274. [PMID: 29459413 PMCID: PMC5829176 DOI: 10.1098/rsta.2017.0274] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/05/2017] [Indexed: 06/08/2023]
Abstract
The efficient production of cold antihydrogen atoms in particle traps at CERN's Antiproton Decelerator has opened up the possibility of performing direct measurements of the Earth's gravitational acceleration on purely antimatter bodies. The goal of the AEgIS collaboration is to measure the value of g for antimatter using a pulsed source of cold antihydrogen and a Moiré deflectometer/Talbot-Lau interferometer. The same antihydrogen beam is also very well suited to measuring precisely the ground-state hyperfine splitting of the anti-atom. The antihydrogen formation mechanism chosen by AEgIS is resonant charge exchange between cold antiprotons and Rydberg positronium. A series of technical developments regarding positrons and positronium (Ps formation in a dedicated room-temperature target, spectroscopy of the n=1-3 and n=3-15 transitions in Ps, Ps formation in a target at 10 K inside the 1 T magnetic field of the experiment) as well as antiprotons (high-efficiency trapping of [Formula: see text], radial compression to sub-millimetre radii of mixed [Formula: see text] plasmas in 1 T field, high-efficiency transfer of [Formula: see text] to the antihydrogen production trap using an in-flight launch and recapture procedure) were successfully implemented. Two further critical steps that are germane mainly to charge exchange formation of antihydrogen-cooling of antiprotons and formation of a beam of antihydrogen-are being addressed in parallel. The coming of ELENA will allow, in the very near future, the number of trappable antiprotons to be increased by more than a factor of 50. For the antihydrogen production scheme chosen by AEgIS, this will be reflected in a corresponding increase of produced antihydrogen atoms, leading to a significant reduction of measurement times and providing a path towards high-precision measurements.This article is part of the Theo Murphy meeting issue 'Antiproton physics in the ELENA era'.
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Affiliation(s)
- M Doser
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - S Aghion
- Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - C Amsler
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
| | - G Bonomi
- Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy
- INFN Pavia, via Bassi 6, 27100 Pavia, Italy
| | - R S Brusa
- Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - M Caccia
- INFN Milano, via Celoria 16, 20133 Milano, Italy
- Department of Science, University of Insubria, via Valleggio 11, 22100 Como, Italy
| | - R Caravita
- Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - F Castelli
- INFN Milano, via Celoria 16, 20133 Milano, Italy
- Department of Physics, University of Milano, via Celoria 16, 20133 Milano, Italy
| | - G Cerchiari
- Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - D Comparat
- Laboratoire Aimé Cotton, Université Paris-Sud, ENS Cachan, CNRS, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - G Consolati
- Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - A Demetrio
- Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
| | - L Di Noto
- Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - C Evans
- Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - M Fanì
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - R Ferragut
- Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - J Fesel
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - A Fontana
- INFN Pavia, via Bassi 6, 27100 Pavia, Italy
| | - S Gerber
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - M Giammarchi
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - A Gligorova
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
| | - F Guatieri
- Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - S Haider
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | | | - H Holmestad
- Department of Physics, University of Oslo, Sem Slandsvei 24, 0371 Oslo, Norway
| | - A Kellerbauer
- Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - O Khalidova
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - D Krasnický
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - V Lagomarsino
- Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - P Lansonneur
- Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne, France
| | - P Lebrun
- Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne, France
| | - C Malbrunot
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
| | - S Mariazzi
- INFN Padova, via Marzolo 8, 35131 Padova, Italy
| | - J Marton
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
| | - V Matveev
- Institute for Nuclear Research of the Russian Academy of Science, Moscow 117312, Russia
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - Z Mazzotta
- INFN Milano, via Celoria 16, 20133 Milano, Italy
- Department of Physics, University of Milano, via Celoria 16, 20133 Milano, Italy
| | - S R Müller
- Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
| | - G Nebbia
- INFN Padova, via Marzolo 8, 35131 Padova, Italy
| | - P Nedelec
- Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne, France
| | - M Oberthaler
- Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
| | - N Pacifico
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - D Pagano
- Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy
- INFN Pavia, via Bassi 6, 27100 Pavia, Italy
| | - L Penasa
- Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - V Petracek
- Czech Technical University in Prague, Brehová 7, 11519 Prague 1, Czech Republic
| | - F Prelz
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - M Prevedelli
- University of Bologna, Viale Berti Pichat 6/2, 40126 Bologna, Italy
| | - B Rienaecker
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - J Robert
- Laboratoire Aimé Cotton, Université Paris-Sud, ENS Cachan, CNRS, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - O M Røhne
- Department of Physics, University of Oslo, Sem Slandsvei 24, 0371 Oslo, Norway
| | - A Rotondi
- INFN Pavia, via Bassi 6, 27100 Pavia, Italy
- Department of Physics, University of Pavia, via Bassi 6, 27100 Pavia, Italy
| | - H Sandaker
- Department of Physics, University of Oslo, Sem Slandsvei 24, 0371 Oslo, Norway
| | - R Santoro
- INFN Milano, via Celoria 16, 20133 Milano, Italy
- Department of Science, University of Insubria, via Valleggio 11, 22100 Como, Italy
| | - L Smestad
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- The Research Council of Norway, PO Box 564, 1327 Lysaker, Norway
| | - F Sorrentino
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - G Testera
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - I C Tietje
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - E Widmann
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
| | - P Yzombard
- Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - C Zimmer
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
- Department of Physics, Heidelberg University, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
| | - J Zmeskal
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
| | - N Zurlo
- INFN Pavia, via Bassi 6, 27100 Pavia, Italy
- Department of Civil Engineering, University of Brescia, via Branze 43, 25123 Brescia, Italy
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21
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Souied EH, Rozet JM, Gerber S, Dufier JL, Soubrane G, Coscas G, Munnich A, Kaplan J. Two Novel Missense Mutations in the Peripherin/RDS Gene in two Unrelated French Patients with Autosomal Dominant Retinitis Pigmentosa. Eur J Ophthalmol 2018; 8:98-101. [PMID: 9673478 DOI: 10.1177/112067219800800208] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 11/16/2022]
Abstract
Purpose To report the identification of two novel RDS mutations in the peripherin/RDS gene of two unrelated French patients affected by autosomal dominant retinitis pigmentosa (ADRP). Methods Fifty-eight unrelated patients affected by ADRP were analyzed. Our diagnostic criteria for RP were bilateral fundus involvement, concentric depression of the visual field and severe involvement on electroretinogram. Transmission of the trait was unambiguous. Our strategy was to analyze the coding sequence of the gene using a combination of single-strand conformation polymorphism (SSCP) and direct sequence analysis of the exons of the gene. Exons that displayed conformational polymorphisms were sequenced on an automated DNA sequencer. Results The sequence analyses revealed two previously unreported missense mutations: Cys165Tyr and Phe211Leu in exons 1 and 2, respectively. None of the 70 controls analyzed carried these base changes. Cosegregation of the base substitution with the disease could be tested in both families presenting the Cys165Tyr and Phe211Leu mutations. Conclusions Several lines of evidence support the idea that these base substitutions are disease-causing mutations. To the best of our knowledge, no peripherin/RDS gene analysis has been previously reported in ADRP in France.
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Affiliation(s)
- E H Souied
- Service de Génétique I'Enfant INSERM-U-393 Hôpital des Enfants-Malades, Paris
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22
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Toledano-Massiah S, Sayadi A, de Boer R, Gelderblom J, Mahdjoub R, Gerber S, Zuber M, Zins M, Hodel J. Accuracy of the Compressed Sensing Accelerated 3D-FLAIR Sequence for the Detection of MS Plaques at 3T. AJNR Am J Neuroradiol 2018; 39:454-458. [PMID: 29348137 DOI: 10.3174/ajnr.a5517] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Accepted: 11/03/2017] [Indexed: 01/21/2023]
Abstract
BACKGROUND AND PURPOSE The use of 3D FLAIR improves the detection of brain lesions in MS patients, but requires long acquisition times. Compressed sensing reduces acquisition time by using the sparsity of MR images to randomly undersample the k-space. Our aim was to compare the image quality and diagnostic performance of 3D-FLAIR with and without compressed sensing for the detection of multiple sclerosis lesions at 3T. MATERIALS AND METHODS Twenty-three patients with relapsing-remitting MS underwent both conventional 3D-FLAIR and compressed sensing 3D-FLAIR on a 3T scanner (reduction in scan time 1 minute 25 seconds, 27%; compressed sensing factor of 1.3). Two blinded readers independently evaluated both conventional and compressed sensing FLAIR for image quality (SNR and contrast-to-noise ratio) and the number of MS lesions visible in the periventricular, intra-juxtacortical, infratentorial, and optic nerve regions. The volume of white matter lesions was measured with automatic postprocessing segmentation software for each FLAIR sequence. RESULTS Image quality and the number of MS lesions detected by the readers were similar between the 2 FLAIR acquisitions (P = .74 and P = .094, respectively). Almost perfect agreement was found between both FLAIR acquisitions for total MS lesion count (Lin concordance correlation coefficient = 0.99). Agreement between conventional and compressed sensing FLAIR was almost perfect for periventricular and infratentorial lesions and substantial for intrajuxtacortical and optic nerve lesions. Postprocessing with the segmentation software did not reveal a significant difference between conventional and compressed sensing FLAIR in total MS lesion volume (P = .63) or the number of MS lesions (P = .15). CONCLUSIONS With a compressed sensing factor of 1.3, 3D-FLAIR is 27% faster and preserves diagnostic performance for the detection of MS plaques at 3T.
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Affiliation(s)
| | - A Sayadi
- From the Departments of Radiology (S.T.-M., A.S., S.G., M.Zins)
| | - R de Boer
- Quantib B.V. (R.d.B., J.G.), Rotterdam, the Netherlands
| | - J Gelderblom
- Quantib B.V. (R.d.B., J.G.), Rotterdam, the Netherlands
| | | | - S Gerber
- From the Departments of Radiology (S.T.-M., A.S., S.G., M.Zins)
| | - M Zuber
- Neurology (M.Zuber), Fondation Hôpital Saint-Joseph, Paris, France
| | - M Zins
- From the Departments of Radiology (S.T.-M., A.S., S.G., M.Zins)
| | - J Hodel
- Department of Neuroradiology (J.H.), AP-HP, Hôpitaux Universitaires Henri Mondor, Université Paris est, Créteil, France
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23
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Gerber S, Yang SL, Zhu D, Soifer H, Sobota JA, Rebec S, Lee JJ, Jia T, Moritz B, Jia C, Gauthier A, Li Y, Leuenberger D, Zhang Y, Chaix L, Li W, Jang H, Lee JS, Yi M, Dakovski GL, Song S, Glownia JM, Nelson S, Kim KW, Chuang YD, Hussain Z, Moore RG, Devereaux TP, Lee WS, Kirchmann PS, Shen ZX. Femtosecond electron-phonon lock-in by photoemission and x-ray free-electron laser. Science 2018; 357:71-75. [PMID: 28684521 DOI: 10.1126/science.aak9946] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 05/03/2017] [Indexed: 11/02/2022]
Abstract
The interactions that lead to the emergence of superconductivity in iron-based materials remain a subject of debate. It has been suggested that electron-electron correlations enhance electron-phonon coupling in iron selenide (FeSe) and related pnictides, but direct experimental verification has been lacking. Here we show that the electron-phonon coupling strength in FeSe can be quantified by combining two time-domain experiments into a "coherent lock-in" measurement in the terahertz regime. X-ray diffraction tracks the light-induced femtosecond coherent lattice motion at a single phonon frequency, and photoemission monitors the subsequent coherent changes in the electronic band structure. Comparison with theory reveals a strong enhancement of the coupling strength in FeSe owing to correlation effects. Given that the electron-phonon coupling affects superconductivity exponentially, this enhancement highlights the importance of the cooperative interplay between electron-electron and electron-phonon interactions.
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Affiliation(s)
- S Gerber
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,SwissFEL and Laboratory for Micro and Nanotechnology, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - S-L Yang
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
| | - D Zhu
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - H Soifer
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - J A Sobota
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - S Rebec
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
| | - J J Lee
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
| | - T Jia
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
| | - B Moritz
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - C Jia
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - A Gauthier
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
| | - Y Li
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - D Leuenberger
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - Y Zhang
- International Center for Quantum Materials, Peking University, Beijing 100871, China
| | - L Chaix
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - W Li
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - H Jang
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - J-S Lee
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - M Yi
- Department of Physics, University of California-Berkeley, Berkeley, CA 94720, USA
| | - G L Dakovski
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - S Song
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - J M Glownia
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - S Nelson
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - K W Kim
- Department of Physics, Chungbuk National University, Cheongju 28644, Korea
| | - Y-D Chuang
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Z Hussain
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - R G Moore
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - T P Devereaux
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - W-S Lee
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.
| | - P S Kirchmann
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.
| | - Z-X Shen
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA. .,Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
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Guatieri F, Aghion S, Amsler C, Angela G, Bonomi G, Brusa R, Caccia M, Caravita R, Castelli F, Cerchiari G, Comparat D, Consolati G, Demetrio A, Di Noto L, Doser M, Evans C, Fanì M, Ferragut R, Fesel J, Fontana A, Gerber S, Giammarchi M, Gligorova A, Haider S, Hinterberger A, Holmestad H, Kellerbauer A, Krasnický D, Lagomarsino V, Lansonneur P, Lebrun P, Malbrunot C, Mariazzi S, Matveev V, Mazzotta Z, Müller S, Nebbia G, Nedelec P, Oberthaler M, Pacifico N, Pagano D, Penasa L, Petracek V, Prelz F, Prevedelli M, Rienaecker B, Robert J, Rhne. O, Rotondi A, Sacerdoti M, Sandaker H, Santoro R, Simon M, Smestad L, Sorrentino F, Testera G, Tietje I, Widmann E, Yzombard P, Zimmer C, Zmeskal J, Zurlo N. AEg̅IS latest results. EPJ Web of Conferences 2018. [DOI: 10.1051/epjconf/201718101037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The validity of the Weak Equivalence Principle (WEP) as predicted by General Relativity has been tested up to astounding precision using ordinary matter. The lack hitherto of a stable source of a probe being at the same time electrically neutral, cold and stable enough to be measured has prevented highaccuracy testing of the WEP on anti-matter. The AEg̅IS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) experiment located at CERN's AD (Antiproton Decelerator) facility aims at producing such a probe in the form of a pulsed beam of cold anti-hydrogen, and at measuring by means of a moiré deflectometer the gravitational force that Earth's mass exerts on it. Low temperature and abundance of the H̅ are paramount to attain a high precision measurement. A technique employing a charge-exchange reaction between antiprotons coming from the AD and excited positronium atoms is being developed at AEg̅IS and will be presented hereafter, alongside an overview of the experimental apparatus and the current status of the experiment
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25
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Evans C, Aghion S, Amsler C, Bonomi G, Brusa R, Caccia M, Caravita R, Castelli F, Cerchiari G, Comparat D, Consolati G, Demetrio A, Di Noto L, Doser M, Fani M, Ferragut R, Fesel J, Fontana A, Gerber S, Giammarchi M, Gligorova A, Guatieri F, Haider S, Hinterberger A, Holmestad H, Kellerbauer A, Khalidova O, Krasnický D, Lagomarsino V, Lansonneur P, Lebrun P, Malbrunot C, Mariazzi S, Marton J, Matveev V, Mazzotta Z, Müller S, Nebbia G, Nedelec P, Oberthaler M, Pacifico N, Pagano D, Penasa L, Petracek V, Prelz F, Prevedelli M, Ravelli L, Rienaecker B, Robert J, Røhne O, Rotondi A, Sandaker H, Santoro R, Smestad L, Sorrentino F, Testera G, Tietje I, Widmann E, Yzombard P, Zimmer C, Zmeskal J, Zurlo N. Towards the first measurement of matter-antimatter gravitational interaction. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201818202040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) is a CERN based experiment with the central aim to measure directly the gravitational acceleration of antihydrogen. Antihydrogen atoms will be produced via charge exchange reactions which will consist of Rydberg-excited positronium atoms sent to cooled antiprotons within an electromagnetic trap. The resulting Rydberg antihydrogen atoms will then be horizontally accelerated by an electric field gradient (Stark effect), they will then pass through a moiré deflectometer. The vertical deflection caused by the Earth's gravitational field will test for the first time the Weak Equivalence Principle for antimatter. Detection will be undertaken via a position sensitive detector. Around 103 antihydrogen atoms are needed for the gravitational measurement to be completed. The present status, current achievements and results will be presented, with special attention toward the laser excitation of positronium (Ps) to the n=3 state and the production of Ps atoms in the transmission geometry.
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27
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Geerts B, Leclercq D, Tezenas du Montcel S, Law-ye B, Gerber S, Bernardeschi D, Galanaud D, Dormont D, Pyatigorskaya N. Characterization of Skull Base Lesions Using Pseudo-Continuous Arterial Spin Labeling. Clin Neuroradiol 2017; 29:75-86. [DOI: 10.1007/s00062-017-0623-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 08/19/2017] [Indexed: 10/18/2022]
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28
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Connolly A, Donnellan N, Lutz E, Goepfert A, Blanchard A, Buys E, Galvin S, Litwiller A, Gosman G, Amundsen C, Gerber S, Dunivan G, Gregory T, Gecsi K, Botros S, Lane F, Higgins R, Major C, Frishman G, Bienstock J, Cantrell L, Parviainen K, Kenton K. “Real-Time” Feedback for Milestones and Procedural Skills: A Multi-Center Trial of “myTIPreport”. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.133] [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: 10/20/2022]
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29
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Lenaers G, Charif M, Amati-Bonneau P, Chao de la Barca J, Procaccio V, Gerber S, Kaplan J, Roubertie A, Meunier I, Reynier P, Rozet J, Hamel C, Bonneau D. The genetic pathophysiology of dominant optic atrophy. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0117] [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: 11/29/2022]
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30
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Rozet J, Fares-Taïe L, Chassaing N, Gerber S, Kaplan J, Ragge N, Calvas P. Specific gene in microphthalmia. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0157] [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: 11/28/2022]
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31
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Gerber S, Reux I, Cassoux N, Soussain C, Fardeau CH, Deladoeuille M, Marro B, Le Hoang P, Marsault C, Leblond V. Intra-Ocular Lymphoma with and without CNS Involvement: Diagnosis and Follow-up a Report of 15 Cases Studied by MR. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/197140099801100203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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
In order to assess the value of MRI in the diagnosis and follow-up of intra-ocular lymphoma, a rare form of primary non-Hodgkin's lymphoma of the central nervous system, we retrospectively reviewed fifteen patients. All patients had ophthalmic investigations and 13 underwent ocular sampling. MR examinations of the brain and globes were performed in all cases and five patients underwent stereotactic brain biopsy. Six patients were treated with chemotherapy and/or radiotherapy, and nine with high-dose chemotherapy, followed by autologous bone marrow transplantation in five cases. MR follow-up was available in all cases. All 15 patients had chronic uveitis which preceded the diagnosis and abnormal funduscopic findings. Three had a mild or severe neurologic deficit. Initial MRI showed brain lymphoma lesions in six cases and a choroido-retinal tumour in one. MR brain lesions were multiple in four cases. They appeared as contrast-enhanced infiltrating areas (n=11) or expansive masses (n=3); two lesions appeared as infiltrating high-signal T2 areas but were unenhanced on T1 with GdDTPA. The diagnosis was based on vitrectomy in 11 cases and on stereotactic brain biopsy in four. Of the twelve lumbar punctures which were performed one was positive. Contrast enhancement disappeared during treatment in all cases, but isolated signal abnormalities persisted. The long-term outcome of such lesions in patients with an intact blood-brain barrier is not yet known. Ocular relapses occurred in 14 patients and CNS recurrences in four. Three patients died from CNS failure (n=1) or relapse (n=2), five are alive in partial remission, five are in complete remission and two died in remission from other causes. Follow-up ranges from 12 to 78 months (median 36 months). MRI usually failed to detect intra-ocular lesions but identified clinically occult brain lesions and served to guide stereotactic brain biopsy when other samples were negative. MRI is the most sensitive follow-up method during treatment, even when the blood-brain barrier is intact.
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Affiliation(s)
| | | | | | - C. Soussain
- Department of Haematology, Hôpital Salpétrière; Paris, France
| | | | | | | | | | | | - V. Leblond
- Department of Haematology, Hôpital Salpétrière; Paris, France
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32
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Kellerbauer A, Aghion S, Amsler C, Ariga A, Ariga T, Bonomi G, Bräunig P, Bremer J, Brusa RS, Cabaret L, Caccia M, Caravita R, Castelli F, Cerchiari G, Chlouba K, Cialdi S, Comparat D, Consolati G, Demetrio A, Di Noto L, Doser M, Dudarev A, Ereditato A, Evans C, Ferragut R, Fesel J, Fontana A, Gerber S, Giammarchi M, Gligorova A, Guatieri F, Haider S, Holmestad H, Huse T, Jordan E, Kimura M, Koettig T, Krasnický D, Lagomarsino V, Lansonneur P, Lebrun P, Lehner S, Liberadzka J, Malbrunot C, Mariazzi S, Matveev V, Mazzotta Z, Nebbia G, Nédélec P, Oberthaler M, Pacifico N, Pagano D, Penasa L, Petráček V, Pistillo C, Prelz F, Prevedelli M, Ravelli L, Rienäcker B, Røhne O, Rotondi A, Sacerdoti M, Sandaker H, Santoro R, Scampoli P, Smestad L, Sorrentino F, Špaček M, Storey J, Strojek I, Testera G, Tietje I, Widmann E, Yzombard P, Zavatarelli S, Zmeskal J, Zurlo N. Probing antimatter gravity – The AEGIS experiment at CERN. EPJ Web Conf 2016. [DOI: 10.1051/epjconf/201612602016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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33
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Gerber S, Jang H, Nojiri H, Matsuzawa S, Yasumura H, Bonn DA, Liang R, Hardy WN, Islam Z, Mehta A, Song S, Sikorski M, Stefanescu D, Feng Y, Kivelson SA, Devereaux TP, Shen ZX, Kao CC, Lee WS, Zhu D, Lee JS. Three-dimensional charge density wave order in YBa2Cu3O6.67 at high magnetic fields. Science 2015; 350:949-52. [PMID: 26541608 DOI: 10.1126/science.aac6257] [Citation(s) in RCA: 238] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 09/30/2015] [Indexed: 11/02/2022]
Abstract
Charge density wave (CDW) correlations have been shown to universally exist in cuprate superconductors. However, their nature at high fields inferred from nuclear magnetic resonance is distinct from that measured with x-ray scattering at zero and low fields. We combined a pulsed magnet with an x-ray free-electron laser to characterize the CDW in YBa2Cu3O6.67 via x-ray scattering in fields of up to 28 tesla. While the zero-field CDW order, which develops at temperatures below ~150 kelvin, is essentially two dimensional, at lower temperature and beyond 15 tesla, another three-dimensionally ordered CDW emerges. The field-induced CDW appears around the zero-field superconducting transition temperature; in contrast, the incommensurate in-plane ordering vector is field-independent. This implies that the two forms of CDW and high-temperature superconductivity are intimately linked.
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Affiliation(s)
- S Gerber
- Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - H Jang
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - H Nojiri
- Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai, 980-8577, Japan
| | - S Matsuzawa
- Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai, 980-8577, Japan
| | - H Yasumura
- Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai, 980-8577, Japan
| | - D A Bonn
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada. Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada
| | - R Liang
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada. Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada
| | - W N Hardy
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada. Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada
| | - Z Islam
- The Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - A Mehta
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - S Song
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - M Sikorski
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - D Stefanescu
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Y Feng
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - S A Kivelson
- Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
| | - T P Devereaux
- Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - Z-X Shen
- Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA. Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
| | - C-C Kao
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - W-S Lee
- Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.
| | - D Zhu
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
| | - J-S Lee
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
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34
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Gerber S, Kim KW, Zhang Y, Zhu D, Plonka N, Yi M, Dakovski GL, Leuenberger D, Kirchmann PS, Moore RG, Chollet M, Glownia JM, Feng Y, Lee JS, Mehta A, Kemper AF, Wolf T, Chuang YD, Hussain Z, Kao CC, Moritz B, Shen ZX, Devereaux TP, Lee WS. Direct characterization of photoinduced lattice dynamics in BaFe2As2. Nat Commun 2015; 6:7377. [PMID: 26051704 PMCID: PMC4468847 DOI: 10.1038/ncomms8377] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [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: 12/21/2014] [Accepted: 04/29/2015] [Indexed: 11/16/2022] Open
Abstract
Ultrafast light pulses can modify electronic properties of quantum materials by perturbing the underlying, intertwined degrees of freedom. In particular, iron-based superconductors exhibit a strong coupling among electronic nematic fluctuations, spins and the lattice, serving as a playground for ultrafast manipulation. Here we use time-resolved X-ray scattering to measure the lattice dynamics of photoexcited BaFe2As2. On optical excitation, no signature of an ultrafast change of the crystal symmetry is observed, but the lattice oscillates rapidly in time due to the coherent excitation of an A1g mode that modulates the Fe–As–Fe bond angle. We directly quantify the coherent lattice dynamics and show that even a small photoinduced lattice distortion can induce notable changes in the electronic and magnetic properties. Our analysis implies that transient structural modification can be an effective tool for manipulating the electronic properties of multi-orbital systems, where electronic instabilities are sensitive to the orbital character of bands. In BaFe2As2, the lattice couples strongly to the magnetic and electronic degrees of freedom, providing a way to control them. Here, by means of time-resolved X-ray scattering, the authors measure rapid lattice oscillations, which can induce changes in the material's electronic and magnetic properties.
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Affiliation(s)
- S Gerber
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - K W Kim
- Department of Physics, Chungbuk National University, 52 Naesudong-ro, Heungdeok-gu, Cheongju 361-763, Korea
| | - Y Zhang
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, USA.,Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA
| | - D Zhu
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - N Plonka
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, USA.,Departments of Physics and Applied Physics, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA
| | - M Yi
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, USA.,Departments of Physics and Applied Physics, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA
| | - G L Dakovski
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - D Leuenberger
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - P S Kirchmann
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - R G Moore
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - M Chollet
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - J M Glownia
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Y Feng
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - J-S Lee
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - A Mehta
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - A F Kemper
- Computational Research Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA
| | - T Wolf
- Institute for Solid State Physics, Karlsruhe Institute of Technology, Hermann-v.-Helmholtz-Platz 1, 76021 Karlsruhe, Germany
| | - Y-D Chuang
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA
| | - Z Hussain
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA
| | - C-C Kao
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - B Moritz
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Z-X Shen
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, USA.,Departments of Physics and Applied Physics, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA
| | - T P Devereaux
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - W-S Lee
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, USA
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35
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Gerber S, Pauli HG. Acid-base and electrolyte changes during gelatin infusions in man. Bibl Haematol 2015; 33:425-7. [PMID: 5377193 DOI: 10.1159/000384864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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36
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Delmaire C, Savatovsky J, Boulanger T, Dhermain F, Le Rhun E, Météllus P, Gerber S, Carsin-Nicole B, Petyt G. Imagerie des métastases cérébrales. Cancer Radiother 2015; 19:16-9. [DOI: 10.1016/j.canrad.2014.11.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 11/26/2014] [Indexed: 11/30/2022]
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37
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Scemla A, Gerber S, Duquesne A, Parize P, Martinez F, Anglicheau D, Snanoudj R, Zuber M, Bougnoux ME, Legendre C, Lortholary O. Dramatic improvement of severe cryptococcosis-induced immune reconstitution syndrome with adalimumab in a renal transplant recipient. Am J Transplant 2015; 15:560-4. [PMID: 25611999 DOI: 10.1111/ajt.13002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [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: 04/15/2014] [Revised: 08/07/2014] [Accepted: 08/23/2014] [Indexed: 01/25/2023]
Abstract
In solid organ transplant recipients, immune reconstitution inflammatory syndrome (IRIS) is a rare complication of cryptococcosis, which may require steroids in its most severe forms. Here, we report the case of a renal transplant recipient who developed severe cryptococcal meningitis-associated IRIS 1 week after immunosuppression reduction. High-dose steroids failed to improve the disease. Finally, a recombinant human monoclonal tumor necrosis factor-α (TNF-α) antagonist, adalimumab, was prescribed, and the patient rapidly experienced dramatic neurological improvement. No IRIS relapse occurred within 14 months following adalimumab discontinuation.
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Affiliation(s)
- A Scemla
- Service de Néphrologie et Transplantation Adulte, Hôpital Necker Enfants Malades, Assistance Publique-Hôpitaux de Paris, Université Paris Descartes Sorbonne Paris Cité, RTRS Centaure, Paris, France
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38
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Cao KI, Lebas N, Gerber S, Levy C, Le Scodan R, Bourgier C, Pierga JY, Gobillion A, Savignoni A, Kirova YM. Phase II randomized study of whole-brain radiation therapy with or without concurrent temozolomide for brain metastases from breast cancer. Ann Oncol 2015; 26:89-94. [PMID: 25355723 DOI: 10.1093/annonc/mdu488] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND To improve the therapeutic index of whole-brain radiation therapy (WBRT) in the treatment of brain metastases (BM) from breast cancer, we investigated the efficacy and safety of WBRT combined with temozolomide (TMZ) in this population. PATIENTS AND METHODS This phase II multicenter prospective randomized study included patients with newly diagnosed intraparenchymal BMs from breast cancer, unsuitable for surgery or radiosurgery. All patients received conformal WBRT (3 Gy × 10-30 Gy), with or without concomitant TMZ administered at a dosage of 75 mg/m(2)/day during the irradiation period. The primary end point was objective response rate (ORR) 6 weeks after the end of treatment, defined as a partial or complete response on systematic brain MRI (modified WHO criteria). Secondary end points were progression-free survival (PFS) and overall survival (OS), neurologic symptoms, and tolerability. RESULTS Between February 2008 and November 2010, 100 patients were enrolled in the study (50 in the WBRT + TMZ arm, 50 in the WBRT arm). Median age was 55 years (29-79). Median follow-up was 9.4 months [1.0-68.1]. ORRs at 6 weeks were 36% in the WBRT arm and 30% in the WBRT + TMZ arm (NS). In the WBRT arm, median PFS was 7.4 months and median OS was 11.1 months. In the WBRT + TMZ arm, median PFS was 6.9 months and median OS was 9.4 months. Treatment was well tolerated in this arm: the most common ≥grade 2 acute toxicity was reversible lymphopenia. CONCLUSION WBRT combined with TMZ did not significantly improve local control and survival in patients with BMs from breast cancer. CLINICALTRIALS.GOV: NCT00875355.
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Affiliation(s)
- K I Cao
- Department of Radiation Oncology
| | | | - S Gerber
- Department of Radiology, Institut Curie, Paris
| | - C Levy
- Department of Radiation Oncology, Centre François Baclesse, Caen
| | | | - C Bourgier
- Department of Radiation Oncology, Institut Gustave Roussy, Villejuif
| | - J-Y Pierga
- Department of Medical Oncology, Institut Curie, Paris, France
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39
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Consolati G, Aghion S, Amsler C, Ariga A, Ariga T, Belov A, Bonomi G, Bräunig P, Bremer J, Brusa R, Cabaret L, Caccia M, Caravita R, Castelli F, Cerchiari G, Chlouba K, Cialdi S, Comparat D, Demetrio A, Derking H, Di Noto L, Doser M, Dudarev A, Ereditato A, Ferragut R, Fontana A, Gerber S, Giammarchi M, Gligorova A, Gninenko S, Haider S, Hogan S, Holmestad H, Huse T, Jordan EJ, Kawada J, Kellerbauer A, Kimura M, Krasnicky D, Lagomarsino V, Lehner S, Malbrunot C, Mariazzi S, Matveev V, Mazzotta Z, Nebbia G, Nedelec P, Oberthaler M, Pacifico N, Penasa L, Petracek V, Pistillo C, Prelz F, Prevedelli M, Ravelli L, Riccardi C, Røhne O, Rosenberger S, Rotondi A, Sacerdoti M, Sandaker H, Santoro R, Scampoli P, Simon M, Spacek M, Storey J, Strojek IM, Subieta M, Testera G, Widmann E, Yzombard P, Zavatarelli S, Zmeskal J. Experiments with low-energy antimatter. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20159601007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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40
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Cao KI, Lebas N, Gerber S, Levy C, Le Scodan R, Marsiglia H, Bourgier C, Pierga JY, Gobillion A, Savignoni A, Kirova YM. Abstract P6-11-01: A randomized phase II clinical trial of whole-brain radiation therapy plus concomitant temozolomide in treatment of brain metastases from breast cancer: Six-month follow-up results. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p6-11-01] [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
Background: Despite of therapeutics progress in advanced breast cancer, brain metastases occurrence remain a frequent and delicate situation. The efficacy of whole-brain radiation therapy (WBRT), still considered as the standard local treatment in case of multiple brain metastases, is limited. Recently, several phase II studies have shown some efficacy of the association of WBRT and temozolomide (TMZ), an oral alkylating agent already known as a radiosensitizer, with improved brain control rate (44 to 96%). Patients with breast cancer were underrepresented and none of these trials have studied this combined treatment issue in this specific population. The aim of this study was to assess the efficacy and safety of WBRT combined with temozolomide in the treatment of brain metastases from breast cancer.
Materials and Methods: A prospective randomized multicenter phase II study was developed, using a modified two-stage Fleming design. Patients with newly diagnosed intraparenchymal brain metastases from breast cancer, not suitable for surgery nor radiosurgery, were included. All patients received conformational WBRT (3 Gy x 10 to 30 Gy). They were randomized to WBRT plus concomitant TMZ administered 75 mg/m2/day during radiation period versus WBRT alone. The primary endpoint was radiologic objective response at six weeks after the end of treatment, defined as a partial or complete response on systematic brain MRI (WHO modified criteria). We also evaluated neurologic symptoms, tolerance, safety, progression free survival (PFS) and overall survival (OS) as secondary endpoints. A longer clinical-brain MRI follow-up was planned, each three months during a two-year period. All of the patients gave their written informed consent to be part of the study, which was approved by the local committee.
Results: One hundred patients were enrolled between February 2008 and December 2010 (50 in the WBRT + TMZ arm, 50 in the WBRT arm). The median age was 55 [29 -79]. Eighty (80) patients had brain metastases as single secondary localization. About one third of patients had a triple negative breast cancer subtype (38,3% in the association arm and 35,71% in the WBRT alone arm). There were 26,7% and 14,6% of HER2 positive subtype respectively. The median follow-up was 30 months [range 6-60]. At six months from brain metastases diagnosis (three months after the end of the treatment), objective response rate seems better in the WBRT + TMZ arm: 52% versus 40% in the arm WBRT alone but was not statistically significant (p = 0,54). No complete response was observed. In the WBRT + TMZ group, median PFS and OS at six-months were respectively 55,6% [range 46-7 – 66,0] and 67,7% [range 59,1 – 77,6]. No improvement in neurologic symptoms was noticed. In multivariate analysis, initial TNM status was significantly correlated with PFS and OS. The concurrent use of TMZ with WBRT was well-tolerated. The most frequent upper grade II acute toxicity was reversible leucopenia in the association arm.
Conclusion: The addition of temozolomide to WBRT in patients with brain metastases from breast cancer did not improve local control or survival at six months follow-up.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P6-11-01.
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Affiliation(s)
- KI Cao
- Institut Curie - Site Saint Cloud, Saint Cloud, France, Metropolitan; Institut Curie - Site Paris, Paris, France, Metropolitan; Centre François Baclesse, Caen, France, Metropolitan; Institut Gustave Roussy, Villejuif, France, Metropolitan
| | - N Lebas
- Institut Curie - Site Saint Cloud, Saint Cloud, France, Metropolitan; Institut Curie - Site Paris, Paris, France, Metropolitan; Centre François Baclesse, Caen, France, Metropolitan; Institut Gustave Roussy, Villejuif, France, Metropolitan
| | - S Gerber
- Institut Curie - Site Saint Cloud, Saint Cloud, France, Metropolitan; Institut Curie - Site Paris, Paris, France, Metropolitan; Centre François Baclesse, Caen, France, Metropolitan; Institut Gustave Roussy, Villejuif, France, Metropolitan
| | - C Levy
- Institut Curie - Site Saint Cloud, Saint Cloud, France, Metropolitan; Institut Curie - Site Paris, Paris, France, Metropolitan; Centre François Baclesse, Caen, France, Metropolitan; Institut Gustave Roussy, Villejuif, France, Metropolitan
| | - R Le Scodan
- Institut Curie - Site Saint Cloud, Saint Cloud, France, Metropolitan; Institut Curie - Site Paris, Paris, France, Metropolitan; Centre François Baclesse, Caen, France, Metropolitan; Institut Gustave Roussy, Villejuif, France, Metropolitan
| | - H Marsiglia
- Institut Curie - Site Saint Cloud, Saint Cloud, France, Metropolitan; Institut Curie - Site Paris, Paris, France, Metropolitan; Centre François Baclesse, Caen, France, Metropolitan; Institut Gustave Roussy, Villejuif, France, Metropolitan
| | - C Bourgier
- Institut Curie - Site Saint Cloud, Saint Cloud, France, Metropolitan; Institut Curie - Site Paris, Paris, France, Metropolitan; Centre François Baclesse, Caen, France, Metropolitan; Institut Gustave Roussy, Villejuif, France, Metropolitan
| | - J-Y Pierga
- Institut Curie - Site Saint Cloud, Saint Cloud, France, Metropolitan; Institut Curie - Site Paris, Paris, France, Metropolitan; Centre François Baclesse, Caen, France, Metropolitan; Institut Gustave Roussy, Villejuif, France, Metropolitan
| | - A Gobillion
- Institut Curie - Site Saint Cloud, Saint Cloud, France, Metropolitan; Institut Curie - Site Paris, Paris, France, Metropolitan; Centre François Baclesse, Caen, France, Metropolitan; Institut Gustave Roussy, Villejuif, France, Metropolitan
| | - A Savignoni
- Institut Curie - Site Saint Cloud, Saint Cloud, France, Metropolitan; Institut Curie - Site Paris, Paris, France, Metropolitan; Centre François Baclesse, Caen, France, Metropolitan; Institut Gustave Roussy, Villejuif, France, Metropolitan
| | - YM Kirova
- Institut Curie - Site Saint Cloud, Saint Cloud, France, Metropolitan; Institut Curie - Site Paris, Paris, France, Metropolitan; Centre François Baclesse, Caen, France, Metropolitan; Institut Gustave Roussy, Villejuif, France, Metropolitan
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Vignier N, Couzigou C, Nguyen Van JC, Gerber S, Gaillard S, Bruel C, Misset B, Kitzis MD, Le Monnier A. Diagnosis and treatment strategies for community-acquired Streptococcus salivarius meningitis. Med Mal Infect 2013; 44:42-4. [PMID: 24274977 DOI: 10.1016/j.medmal.2013.10.005] [Citation(s) in RCA: 3] [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] [Received: 09/03/2013] [Revised: 09/09/2013] [Accepted: 10/21/2013] [Indexed: 11/30/2022]
Affiliation(s)
- N Vignier
- Équipe mobile de microbiologie clinique/équipe opérationnelle d'hygiène, groupe hospitalier Paris Saint-Joseph, 75014 Paris, France; Unité de microbiologie clinique, groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - C Couzigou
- Équipe mobile de microbiologie clinique/équipe opérationnelle d'hygiène, groupe hospitalier Paris Saint-Joseph, 75014 Paris, France; Unité de microbiologie clinique, groupe hospitalier Paris Saint-Joseph, 75014 Paris, France.
| | - J C Nguyen Van
- Unité de microbiologie clinique, groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - S Gerber
- Service de radiologie, groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - S Gaillard
- Service de neurochirurgie, hôpital Foch, 40, rue Worth, 92151 Suresnes, France
| | - C Bruel
- Service de réanimation polyvalente, groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - B Misset
- Service de réanimation polyvalente, groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - M D Kitzis
- Unité de microbiologie clinique, groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - A Le Monnier
- Unité de microbiologie clinique, groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
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Gremlich S, Damnon F, Reymondin D, Braissant O, Schittny JC, Baud D, Gerber S, Roth-Kleiner M. The long non-coding RNA NEAT1 is increased in IUGR placentas, leading to potential new hypotheses of IUGR origin/development. Placenta 2013; 35:44-9. [PMID: 24280234 DOI: 10.1016/j.placenta.2013.11.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [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: 06/10/2013] [Revised: 11/04/2013] [Accepted: 11/05/2013] [Indexed: 02/04/2023]
Abstract
INTRODUCTION Intrauterine Growth Restriction (IUGR) is a multifactorial disease defined by an inability of the fetus to reach its growth potential. IUGR not only increases the risk of neonatal mortality/morbidity, but also the risk of metabolic syndrome during adulthood. Certain placental proteins have been shown to be implicated in IUGR development, such as proteins from the GH/IGF axis and angiogenesis/apoptosis processes. METHODS Twelve patients with term IUGR pregnancy (birth weight < 10th percentile) and 12 CTRLs were included. mRNA was extracted from the fetal part of the placenta and submitted to a subtraction method (Clontech PCR-Select cDNA Subtraction). RESULTS One candidate gene identified was the long non-coding RNA NEAT1 (nuclear paraspeckle assembly transcript 1). NEAT1 is the core component of a subnuclear structure called paraspeckle. This structure is responsible for the retention of hyperedited mRNAs in the nucleus. Overall, NEAT1 mRNA expression was 4.14 (±1.16)-fold increased in IUGR vs. CTRL placentas (P = 0.009). NEAT1 was exclusively localized in the nuclei of the villous trophoblasts and was expressed in more nuclei and with greater intensity in IUGR placentas than in CTRLs. PSPC1, one of the three main proteins of the paraspeckle, co-localized with NEAT1 in the villous trophoblasts. The expression of NEAT1_2 mRNA, the long isoform of NEAT1, was only modestly increased in IUGR vs. CTRL placentas. DISCUSSION/CONCLUSION The increase in NEAT1 and its co-localization with PSPC1 suggests an increase in paraspeckles in IUGR villous trophoblasts. This could lead to an increased retention of important mRNAs in villous trophoblasts nuclei. Given that the villous trophoblasts are crucial for the barrier function of the placenta, this could in part explain placental dysfunction in idiopathic IUGR fetuses.
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Affiliation(s)
- S Gremlich
- Clinic of Neonatology, University Hospital and University of Lausanne, Switzerland.
| | - F Damnon
- Department of Gynecology, Obstetrics and Medical Genetics, University Hospital and University of Lausanne, Switzerland
| | - D Reymondin
- Department of Gynecology, Obstetrics and Medical Genetics, University Hospital and University of Lausanne, Switzerland
| | - O Braissant
- Service of Biomedicine, University Hospital and University of Lausanne, Switzerland
| | - J C Schittny
- Institute of Anatomy, University of Bern, Switzerland
| | - D Baud
- Department of Gynecology, Obstetrics and Medical Genetics, University Hospital and University of Lausanne, Switzerland
| | - S Gerber
- Department of Gynecology, Obstetrics and Medical Genetics, University Hospital and University of Lausanne, Switzerland
| | - M Roth-Kleiner
- Clinic of Neonatology, University Hospital and University of Lausanne, Switzerland
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Andres A, Stich O, Gross C, Gerber S, Rauer S, Langosch JM. Prevalence of intrathecal antibody synthesis against neurotropic agents in patients with bipolar disorders. Pharmacopsychiatry 2013. [DOI: 10.1055/s-0033-1353266] [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: 10/26/2022]
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44
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Narring M, Logak M, Brasme H, Gerber S, Zuber M. Cavernomatose radio-induite : évolution plus de 20 ans après l’irradiation. Rev Neurol (Paris) 2013. [DOI: 10.1016/j.neurol.2013.01.213] [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: 10/27/2022]
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D’aligny L, Brasme H, Gerber S, Bruel C, Join-Lambert C, Zuber M. Méningo encéphalites à HSV2 : particularités cliniques et paracliniques-comparaison aux atteintes liés à HSV1. Rev Neurol (Paris) 2013. [DOI: 10.1016/j.neurol.2013.01.076] [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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Kaplan J, Rozet JM, Gerber S, Camuzat A, Souïed E, Bonneau D, Larget-Piet D, Dollfus H, Dufier JL, Briard ML, Frézal J, Munnich A. Des gènes pour les dystrophies rétiniennes des enfants. Med Sci (Paris) 2013. [DOI: 10.4267/10608/2212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Wills MA, Gerber S, Ruta M, Hughes M. The disparity of priapulid, archaeopriapulid and palaeoscolecid worms in the light of new data. J Evol Biol 2012; 25:2056-2076. [PMID: 22901035 DOI: 10.1111/j.1420-9101.2012.02586.x] [Citation(s) in RCA: 24] [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] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 06/28/2012] [Indexed: 02/02/2023]
Abstract
Priapulids and their extinct relatives, the archaeopriapulids and palaeoscolecids, are vermiform, carnivorous ecdysozoans with an armoured, extensible proboscis. These worms were an important component of marine communities during the Palaeozoic, but were especially abundant and diverse in the Cambrian. Today, they comprise just seven genera in four families. Priapulids were among the first groups used to test hypotheses concerning the morphological disparity of Cambrian fossils relative to the extant fauna. A previous study sampled at the generic level, concluding that Cambrian genera embodied marginally less morphological diversity than their extant counterparts. Here, we sample predominantly at the species level and include numerous fossils and some extant forms described in the last fifteen years. Empirical morphospaces for priapulids, archaeopriapulids and palaeoscolecids are relatively insensitive to changes in the taxon or character sample: their overall form has altered little, despite the markedly improved sampling. Cambrian and post-Cambrian genera occupy adjacent rather than broadly overlapping regions of these spaces, and Cambrian species still show lower morphological disparity than their post-Cambrian counterparts. Crucially, the significance of this difference has increased with improved taxon sampling over research time. In contrast with empirical morphospaces, the phylogeny of priapulids, archaeopriapulids and palaeoscolecids derived from morphological characters is extremely sensitive to details of taxon sampling and the manner in which characters are weighted. However, the extant Priapulidae and Halicryptidae invariably resolve as sister families, with this entire clade subsequently being sister group to the Maccabeidae. In our most inclusive trees, the extant Tubiluchidae are separated from these other living taxa by a number of small, intervening fossil clades.
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Affiliation(s)
- M A Wills
- Department of Biology and Biochemistry, The University of Bath, Claverton Down, UK
| | - S Gerber
- Department of Biology and Biochemistry, The University of Bath, Claverton Down, UK
| | - M Ruta
- School of Earth Sciences, The University of Bristol, Bristol, UK
| | - M Hughes
- Department of Biology and Biochemistry, The University of Bath, Claverton Down, UK
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Bushway M, Siebert A, Gerber S, Katzman P, Miller R, Lord E, Murphy S. Development of a novel whole mount immunofluorescence technique to visualize intact human placental architecture. J Reprod Immunol 2012. [DOI: 10.1016/j.jri.2012.03.289] [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: 11/25/2022]
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Egetenmeyer N, Gavilano JL, Maisuradze A, Gerber S, MacLaughlin DE, Seyfarth G, Andreica D, Desilets-Benoit A, Bianchi AD, Baines C, Khasanov R, Fisk Z, Kenzelmann M. Direct observation of the quantum critical point in heavy fermion CeRhSi3. Phys Rev Lett 2012; 108:177204. [PMID: 22680903 DOI: 10.1103/physrevlett.108.177204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Indexed: 06/01/2023]
Abstract
We report on muon spin rotation studies of the noncentrosymmetric heavy fermion antiferromagnet CeRhSi3. A drastic and monotonic suppression of the internal fields, at the lowest measured temperature, was observed upon an increase of external pressure. Our data suggest that the ordered moments are gradually quenched with increasing pressure, in a manner different from the pressure dependence of the Néel temperature. At 23.6 kbar, the ordered magnetic moments are fully suppressed via a second-order phase transition, and T(N) is zero. Thus, we directly observed the quantum critical point at 23.6 kbar hidden inside the superconducting phase of CeRhSi3.
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Affiliation(s)
- N Egetenmeyer
- Laboratory for Neutron Scattering, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.
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Gremlich S, Chanson A, Urner F, Senn A, Reymondin D, Damnon F, Roth-Kleiner M, Witkin SS, Germond M, Gerber S. LIF and sIL-2R plasma concentrations in IVF patients on the day of embryo transfer: predictive markers of IVF outcome. J Reprod Immunol 2012; 94:175-82. [PMID: 22436290 DOI: 10.1016/j.jri.2012.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Revised: 01/26/2012] [Accepted: 02/13/2012] [Indexed: 01/19/2023]
Abstract
Successful implantation is still the limiting step in IVF. We hypothesized that maternal plasma concentrations of certain cytokines at the time of embryo transfer could predict the likelihood of successful implantation and pregnancy. sIL-2R, IL-6, LIF, and MMP2 concentrations were measured in plasma from 160 IVF patients (natural and stimulated IVF cycles) on the morning of the embryo transfer (ET0) and 14 days later (ET+14). Patients were ultimately subdivided into four groups depending on the IVF treatment outcome (pregnancy failure, biochemical pregnancy, first-trimester miscarriage and normal term delivery). In natural and stimulated IVF cycles at ET0, sIL-2R concentrations were threefold higher in biochemical pregnancies than in pregnancy failures (P=0.020), and in natural cycles only, 2.5-fold higher in normal term deliveries than in pregnancy failures (P=0.023). Conversely, in natural and stimulated IVF cycles at ET0, LIF concentrations were one third lower in biochemical pregnancies/first-trimester miscarriages compared with pregnancy failures (P=0.042). We suggest that high sIL-2R and low LIF concentrations in maternal plasma on the morning of the embryo transfer might be associated with increased risks of early pregnancy loss, while a basal level of sIL-2R is necessary for normal term delivery outcome. Both cytokine measurements might therefore be useful in the management of IVF patients, and modulation of their concentrations could be investigated as a therapeutic alternative for women with abnormal concentrations at the time of embryo transfer.
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Affiliation(s)
- S Gremlich
- Department of Gynecology and Obstetrics, Centre Hospitalier Universitaire Vaudois and University of Lausanne, 1011 Lausanne, Switzerland.
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