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2. Alimentation et risque d’infection par le SARS-CoV-2 : étude prospective dans la cohorte NutriNet-Santé

Author

Deschasaux-Tanguy, M., primary, Srour, B., additional, Bourhis, L., additional, Arnault, N., additional, Druesne-Pecollo, N., additional, Esseddik, Y., additional, Szabo De Edelenyi, F., additional, Allègre, J., additional, Allès, B., additional, Andreeva, V.A., additional, Baudry, J., additional, Fezeu, L.K., additional, Galan, P., additional, Julia, C., additional, Kesse-Guyot, E., additional, Péneau, S., additional, Hercberg, S., additional, Bajos, N., additional, Severi, G., additional, Zins, M., additional, De Lamballerie, X., additional, Carrat, F., additional, and Touvier, M., additional

Published
2022
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4. Nutritional risk factors for SARS-CoV-2 infection: a prospective study within the NutriNet-Santé cohort.

Author

Deschasaux-Tanguy, M, Srour, B, Bourhis, L, Arnault, N, Druesne-Pecollo, N, Esseddik, Y, de Edelenyi, FS, Allègre, J, Allès, B, Andreeva, VA, Baudry, J, Fezeu, LK, Galan, P, Julia, C, Kesse-Guyot, E, Péneau, S, Hercberg, S, Bajos, N, Severi, G, Zins, M, de Lamballerie, X, Carrat, F, Touvier, M, SAPRIS-SERO study group, Deschasaux-Tanguy, M, Srour, B, Bourhis, L, Arnault, N, Druesne-Pecollo, N, Esseddik, Y, de Edelenyi, FS, Allègre, J, Allès, B, Andreeva, VA, Baudry, J, Fezeu, LK, Galan, P, Julia, C, Kesse-Guyot, E, Péneau, S, Hercberg, S, Bajos, N, Severi, G, Zins, M, de Lamballerie, X, Carrat, F, Touvier, M, and SAPRIS-SERO study group

Abstract

BACKGROUND: Nutritional factors are essential for the functioning of the immune system and could therefore play a role in COVID-19 but evidence is needed. Our objective was to study the associations between diet and the risk of SARS-CoV-2 infection in a large population-based sample. METHODS: Our analyses were conducted in the French prospective NutriNet-Santé cohort study (2009-2020). Seroprevalence of anti-SARS-CoV-2 antibodies was assessed by ELISA on dried blood spots. Dietary intakes were derived from repeated 24 h dietary records (at least 6) in the two years preceding the start of the COVID-19 pandemic in France (February 2020). Multi-adjusted logistic regression models were computed. RESULTS: A total of 7766 adults (70.3% women, mean age: 60.3 years) were included, among which 311 were positive for anti-SARS-CoV-2 antibodies. Dietary intakes of vitamin C (OR for 1 SD=0.86 (0.75-0.98), P=0.02), vitamin B9 (OR=0.84 (0.72-0.98), P=0.02), vitamin K (OR=0.86 (0.74-0.99), P=0.04), fibers (OR=0.84 (0.72-0.98), P=0.02), and fruit and vegetables (OR=0.85 (0.74-0.97), P=0.02) were associated to a decreased probability of SARS-CoV-2 infection while dietary intakes of calcium (OR=1.16 (1.01-1.35), P=0.04) and dairy products (OR=1.19 (1.06-1.33), P=0.002) associated to increased odds. No association was detected with other food groups or nutrients or with the overall diet quality. CONCLUSIONS: Higher dietary intakes of fruit and vegetables and, consistently, of vitamin C, folate, vitamin K and fibers were associated with a lower susceptibility to SARS-CoV-2 infection. Beyond its established role in the prevention of non-communicable diseases, diet could therefore also contribute to prevent some infectious diseases such as COVID-19.

Published
2021

16. Quantum confinement effects of CdS nanocrystals in a sodium borosilicate glass prepared by the sol-gel process.

Author

Mathieu, H., Richard, T., Allègre, J., Lefebvre, P., Arnaud, G., Granier, W., Boudes, L., Marc, J. L., Pradel, A., and Ribes, M.

Subjects
CRYSTALS, CADMIUM compounds, QUANTUM electrodynamics
Abstract

Examines quantum confinement effects of cadmium sulphide (CdS) nanocrystals in a sodium borosilicate glass. Factors which affect the optical properties of semiconductor nanocrystallites; Effects of thermal annealing on CdS nanocrystals; Discussion on weak confinement regimes in CdS nanocrystals.

Published
1995
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