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On the future of probiotics research Dr. Olaf Larsen Probiota 2020, Dublin Conflicts of interest Associate Professor @ Athena Institute, Vrije Universiteit Amsterdam (0.2 FTE) Senior Manager Science @ Yakult Nederland B.V. 2 Short


  1. On the future of probiotics research Dr. Olaf Larsen Probiota 2020, Dublin

  2. Conflicts of interest β€’ Associate Professor @ Athena Institute, Vrije Universiteit Amsterdam (0.2 FTE) β€’ Senior Manager Science @ Yakult Nederland B.V. 2

  3. Short company profile 3

  4. On the future of probiotics research 4

  5. Responders & non-responders Kootte, Ruud S., et al. Cell metabolism 26.4 (2017): 611-619. 5

  6. The challenges 1. A fair meta-analysis 2. A personalized approach Kootte, Ruud S., et al. Cell metabolism 26.4 (2017): 611-619. 6

  7. 1. The (partly) fair meta-analysis: strain-specificity Hill, Colin, et al. Nat Rev Gastroenterol Hepatol 11.8 (2014): 506-514. 7

  8. 1. The (truly) fair meta-analysis: product-specificity Flach, Koks, v.d. Waal, v.d. Nieuwboer, Claassen & Larsen, Critical reviews in food science and nutrition (2017): 1-15 8

  9. 2. The personalized approach (vs the black box approach) 9

  10. 2. Microbial guilds & graph theory External trigger Physiological response 10

  11. 2. Microbial guilds: graph theory 𝐸 = 𝐹 𝑛 11

  12. 2. Directed guilds of 5 species: heatmap βœ“ 1.048.576 configurations already! βœ“ 2.490.368 paths going from node 1 β†’ node 5 Upon # nodes Larsen, et al. Scientific reports 9.1 (2019): 5558. 12

  13. 2. Weighted average density & efficiency βœ“ Directed: more efficient βœ“ Directed: more robust β€’ Larsen & Claassen. Scientific reports 8.1 (2018): 1-5. Konopka, The ISME Journal (2009) 3, 1223 – 1230 β€’ Larsen, et al. Scientific reports 9.1 (2019): 5558. 13

  14. 2. Ecological dimensions fecal transplant analogues Larsen, et al. Scientific reports 9.1 (2019): 5558. 14

  15. The future of probiotics? 15

  16. Probiotics in Europe: the future seems bright! Van der Geest, A. M., Flach, J., Claassen, E., Sijlmans, A. W., van de Burgwal, L. H. M., & Larsen, O. F. A. (2020) PharmaNutrition, 100178. 16

  17. Acknowledgements: β€’ β€’ Eric Claassen, VU Anouk Sijlmans, VU β€’ β€’ Robert Jan Brummer, Γ–rebro Universitet Mark vd Waal, VU β€’ β€’ Joop van Orsouw, Van Orsouw Design Peter vd Spek, Erasmus MC β€’ β€’ Joost Flach, VU Anton Koning, Erasmus MC β€’ β€’ Anne van der Geest, VU Yakult Questions? 17

  18. On the future of probiotics research Dr. Olaf Larsen Probiota 2020, Dublin

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