Interplay between obesity and associated metabolic disorders: New insights into the gut microbiota
Abstract
Obesity and associated metabolic disorders are worldwide epidemic. The literature provides new evidence that gut microbiota dysbiosis (at the phyla, genus, or species level) affects host metabolism and energy storage. Here we discuss new findings that may explain how gut microbiota can be involved in the development or in the control of obesity and associated low-grade inflammation. New powerful molecular biology methods and the use of gnotobiotic animal allowed to analyze the molecular link between gut bacteria and the host. Moreover, even if more studies are needed to unravel how changing gut microbiota impacts on the development of obesity and related metabolic alterations, probiotic and prebiotic approach appear as potential interesting treatments to reverse host metabolic alterations linked to gut microbiota dysbiosis.
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In obese rodents, antibiotics and prebiotics were able to restore gut barrier integrity and metabolic functions, providing evidence for the gut barrier as a mediator of microbiota-induced systemic inflammation.
“In obese rodents, antibiotics and prebiotics were able to restore gut barrier integrity and metabolic functions, providing evidence for the gut barrier as a mediator of microbiota-induced systemic inflammation [98,99].”
Cites
The metabolic syndrome—a new worldwide definition
Alberti, K. G. M., Zimmet, P., & Shaw, J. (2005) · The Lancet · doi:10.1016/s0140-6736(05)67402-8 · Cited by 9,352 · see citing works
Inflammation and metabolic disorders
Hotamisligil, G. S. (2006) · Nature · doi:10.1038/nature05485 · Cited by 9,199 · see citing works
Human gut microbes associated with obesity
Ley, R. E., Turnbaugh, P. J., Klein, S., & Gordon, J. I. (2006) · Nature · doi:10.1038/4441022a · Cited by 8,785 · see citing works
Diversity of the Human Intestinal Microbial Flora
Eckburg, P. B., Bik, E. M., Bernstein, C. N., Purdom, E., Dethlefsen, L., Sargent, M., Gill, S. R., Nelson, K. E., & Relman, D. A. (2005) · Science · doi:10.1126/science.1110591 · Cited by 7,913 · see citing works
A core gut microbiome in obese and lean twins
Turnbaugh, P. J., Hamady, M., Yatsunenko, T., Cantarel, B. L., Duncan, A., Ley, R. E., Sogin, M. L., Jones, W. J., Roe, B. A., Affourtit, J. P., et al. (2009) · Nature · doi:10.1038/nature07540 · Cited by 7,823 · see citing works
Metabolic Endotoxemia Initiates Obesity and Insulin Resistance
Cani, P. D., Amar, J., Iglesias, M. A., Poggi, M., Knauf, C., Bastelica, D., Neyrinck, A. M., Fava, F., Tuohy, K. M., Chabo, C., et al. (2007) · Diabetes · doi:10.2337/db06-1491 · Cited by 6,638 · see citing works
Self-citationThe gut microbiota as an environmental factor that regulates fat storage
Bäckhed, F., Ding, H., Wang, T., Hooper, L. V., Koh, G. Y., Nagy, A., Semenkovich, C. F., & Gordon, J. I. (2004) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0407076101 · Cited by 6,245 · see citing works
Obesity alters gut microbial ecology
Ley, R. E., Bäckhed, F., Turnbaugh, P., Lozupone, C. A., Knight, R. D., & Gordon, J. I. (2005) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0504978102 · Cited by 6,176 · see citing works
Turnbaugh, P. J., Ley, R. E., Hamady, M., Fraser-Liggett, C. M., Knight, R., & Gordon, J. I. (2007) · Nature · doi:10.1038/nature06244 · Cited by 6,091 · see citing works
The gut microbiota shapes intestinal immune responses during health and disease
Round, J. L., & Mazmanian, S. K. (2009) · Nature Reviews Immunology · doi:10.1038/nri2515 · Cited by 5,029 · see citing works
Cani, P. D., Bibiloni, R., Knauf, C., Waget, A., Neyrinck, A. M., Delzenne, N. M., & Burcelin, R. (2008) · Diabetes · doi:10.2337/db07-1403 · Cited by 4,819 · see citing works
Self-citationInflammation, stress, and diabetes
Wellen, K. E., & Hotamisligil, G. S. (2005) · Journal of Clinical Investigation · doi:10.1172/jci25102 · Cited by 4,143 · see citing works
Gut flora in health and disease
Guarner, F., & Malagelada, J. (2003) · The Lancet · doi:10.1016/s0140-6736(03)12489-0 · Cited by 3,395 · see citing works
Ecological and Evolutionary Forces Shaping Microbial Diversity in the Human Intestine
Ley, R. E., Peterson, D. A., & Gordon, J. I. (2006) · Cell · doi:10.1016/j.cell.2006.02.017 · Cited by 3,358 · see citing works
Turnbaugh, P. J., Bäckhed, F., Fulton, L., & Gordon, J. I. (2008) · Cell Host & Microbe · doi:10.1016/j.chom.2008.02.015 · Cited by 2,915 · see citing works
Mechanisms underlying the resistance to diet-induced obesity in germ-free mice
Bäckhed, F., Manchester, J. K., Semenkovich, C. F., & Gordon, J. I. (2007) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0605374104 · Cited by 2,615 · see citing works
Cani, P. D., Possemiers, S., Van de Wiele, T., Guiot, Y., Everard, A., Rottier, O., Geurts, L., Naslain, D., Neyrinck, A., Lambert, D. M., et al. (2009) · Gut · doi:10.1136/gut.2008.165886 · Cited by 2,518 · see citing works
Self-citationHuman gut microbiota in obesity and after gastric bypass
Zhang, H., DiBaise, J. K., Zuccolo, A., Kudrna, D., Braidotti, M., Yu, Y., Parameswaran, P., Crowell, M. D., Wing, R., Rittmann, B. E., et al. (2009) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0812600106 · Cited by 1,880 · see citing works
Cani, P. D., Neyrinck, A. M., Fava, F., Knauf, C., Burcelin, R., Tuohy, K. M., Gibson, G. R., & Delzenne, N. M. (2007) · Diabetologia · doi:10.1007/s00125-007-0791-0 · Cited by 1,770 · see citing works
Self-citationLe Poul, E., Loison, C., Struyf, S., Springael, J.-Y., Lannoy, V., Decobecq, M.-E., Brezillon, S., Dupriez, V., Vassart, G., Van Damme, J., et al. (2003) · Journal of Biological Chemistry · doi:10.1074/jbc.m301403200 · Cited by 1,651 · see citing works
Samuel, B. S., Shaito, A., Motoike, T., Rey, F. E., Backhed, F., Manchester, J. K., Hammer, R. E., Williams, S. C., Crowley, J., Yanagisawa, M., et al. (2008) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0808567105 · Cited by 1,564 · see citing works
Microbes in Gastrointestinal Health and Disease
Neish, A. S. (2008) · Gastroenterology · doi:10.1053/j.gastro.2008.10.080 · Cited by 1,388 · see citing works
Human colonic microbiota associated with diet, obesity and weight loss
Duncan, S. H., Lobley, G. E., Holtrop, G., Ince, J., Johnstone, A. M., Louis, P., & Flint, H. J. (2008) · International Journal of Obesity · doi:10.1038/ijo.2008.155 · Cited by 1,222 · see citing works
Early differences in fecal microbiota composition in children may predict overweight
Kalliomäki, M. A., Collado, M. C., Salminen, S., & Isolauri, E. (2008) · American Journal of Clinical Nutrition · doi:10.1093/ajcn/87.3.534 · Cited by 1,056 · see citing works
The role of the gut microbiota in energy metabolism and metabolic disease
Cani, P., & Delzenne, N. (2009) · Current Pharmaceutical Design · doi:10.2174/138161209788168164 · Cited by 974 · see citing works
Self-citationDistinct composition of gut microbiota during pregnancy in overweight and normal-weight women
Collado, M. C., Isolauri, E., Laitinen, K., & Salminen, S. (2008) · American Journal of Clinical Nutrition · doi:10.1093/ajcn/88.4.894 · Cited by 863 · see citing works
Adipose Tissue Macrophages, Low Grade Inflammation and Insulin Resistance in Human Obesity
Heilbronn, L. K., & Campbell, L. V. (2008) · Current Pharmaceutical Design · doi:10.2174/138161208784246153 · Cited by 496 · see citing works
Interplay Between Weight Loss and Gut Microbiota Composition in Overweight Adolescents
Santacruz, A., Marcos, A., Wärnberǵ, J., Martí, A., Martín‐Matillas, M., Campoy, C., Moreno, L. A., Veiga, Ó. L., Redondo-Figuero, C. G., Garagorri, J. M., et al. (2009) · Obesity · doi:10.1038/oby.2009.112 · Cited by 474 · see citing works
Gut microbiota: a potential new territory for drug targeting
Jia, W. P., Li, H., Zhao, L., & Nicholson, J. K. (2008) · Nature Reviews Drug Discovery · doi:10.1038/nrd2505 · Cited by 471 · see citing works
Cani, P. D., Knauf, C., Iglesias, M. A., Drucker, D. J., Delzenne, N. M., & Burcelin, R. (2006) · Diabetes · doi:10.2337/db05-1360 · Cited by 404 · see citing works
Self-citationThe role of peptide YY in appetite regulation and obesity
Karra, E., Chandarana, K., & Batterham, R. L. (2009) · The Journal of Physiology · doi:10.1113/jphysiol.2008.164269 · Cited by 336 · see citing works
Predominant Role of Host Genetics in Controlling the Composition of Gut Microbiota
Khachatryan, Z., Ktsoyan, Z. A., Manukyan, G. P., Kelly, D., Ghazaryan, K. A., & Aminov, R. I. (2008) · PLoS ONE · doi:10.1371/journal.pone.0003064 · Cited by 317 · see citing works
Impact of inulin and oligofructose on gastrointestinal peptides
Delzenne, N. M., Cani, P. D., Daubioul, C., & Neyrinck, A. M. (2005) · British Journal Of Nutrition · doi:10.1079/bjn20041342 · Cited by 314 · see citing works
Self-citationTop-Down Systems Biology Modeling of Host Metabotype−Microbiome Associations in Obese Rodents
Waldram, A., Holmes, E. C., Wang, Y., Rantalainen, M., Wilson, I. D., Tuohy, K. M., McCartney, A. L., Gibson, G. R., & Nicholson, J. K. (2009) · Journal of Proteome Research · doi:10.1021/pr8009885 · Cited by 266 · see citing works
Griffiths, E. A., Duffy, L. C., Schanbacher, F. L., Qiao, H., Dryja, D., Leavens, A., Rossman, J., Rich, G. A., DiRienzo, D. B., & Ogra, P. L. O. (2004) · Digestive Diseases and Sciences · doi:10.1023/b:ddas.0000026302.92898.ae · Cited by 197 · see citing works
The Role of Bifidobacteria in Gut Barrier Function After Thermal Injury in Rats
Wang, Z., Xiao, G., Yao, Y.-M., Guo, S., Lu, K., & Sheng, Z. (2006) · The Journal of Trauma: Injury, Infection, and Critical Care · doi:10.1097/01.ta.0000196574.70614.27 · Cited by 193 · see citing works
Microbiomic analysis of the bifidobacterial population in the human distal gut
Turroni, F., Marchesi, J. R., Foroni, E., Gueimonde, M., Shanahan, F., Margolles, A., van Sinderen, D., & Ventura, M. (2009) · The ISME Journal · doi:10.1038/ismej.2009.19 · Cited by 137 · see citing works
Beneficial effects of probiotic bacteria isolated from breast milk
Lara‐Villoslada, F., Olivares, M. M., Sierra, S., Rodríguez, J. M., Bozá, J., & Xaus, J. (2007) · British Journal Of Nutrition · doi:10.1017/s0007114507832910 · Cited by 120 · see citing works
Commane, D. M., Shortt, C., Silvi, S., Cresci, A., Hughes, R., & Rowland, I. R. (2005) · Nutrition and Cancer · doi:10.1207/s15327914nc5101_14 · Cited by 110 · see citing works
Inulin and oligofructose: impact on intestinal diseases and disorders
Guarner, F. (2005) · British Journal Of Nutrition · doi:10.1079/bjn20041345 · Cited by 100 · see citing works
Risk factors of development of gut-derived bacterial translocation in thermally injured rats
Zhong-tang, W. (2004) · World Journal of Gastroenterology · doi:10.3748/wjg.v10.i11.1619 · Cited by 90 · see citing works
Interactomics in the Human Intestine
Boesten, R. J., & de Vos, W. M. (2008) · Journal of Clinical Gastroenterology · doi:10.1097/mcg.0b013e31817dbd62 · Cited by 74 · see citing works
Lundell, A., Adlerberth, I., Lindberg, E., Karlsson, H., Ekberg, S., Åberg, N., Saalman, R., Hock, B. D., Steinkasserer, A., Hesselmar, B., et al. (2006) · Clinical & Experimental Allergy · doi:10.1111/j.1365-2222.2006.02625.x · Cited by 66 · see citing works
Probiotics in Intestinal and Non-Intestinal Infectious Diseases – Clinical Evidence
Hatakka, K., & Saxelin, M. (2008) · Current Pharmaceutical Design · doi:10.2174/138161208784480162 · Cited by 58 · see citing works
Ruan, X., Shi, H., Xia, G., Xiao, Y., Dong, J., Ming, F.-P., & Wang, S. (2007) · Nutrition · doi:10.1016/j.nut.2007.07.002 · Cited by 42 · see citing works
Boesten, R. J., Schuren, F. H. J., & de Vos, W. M. (2008) · Journal of Microbiological Methods · doi:10.1016/j.mimet.2008.12.006 · Cited by 25 · see citing works
Human Microbiome Project—paving the way to a better understanding of ourselves and our microbes
Hsiao, W., & Fraser, C. M. (2009) · Drug Discovery Today · doi:10.1016/j.drudis.2009.03.001 · Cited by 24 · see citing works
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Bischoff, S. C., Barbara, G., Buurman, W., Ockhuizen, T., Schulzke, J.-D., Serino, M., Tilg, H., Watson, A., & Wells, J. M. (2014) · BMC Gastroenterology · doi:10.1186/s12876-014-0189-7 · Cited by 1,755 · see citing works
Chronic Inflammation in Obesity and the Metabolic Syndrome
Monteiro, R., & Azevedo, I. (2010) · Mediators of Inflammation · doi:10.1155/2010/289645 · Cited by 1,186 · see citing works
“[109] P.”
ResultHemarajata, P., & Versalovic, J. (2013) · Therapeutic Advances in Gastroenterology · doi:10.1177/1756283x12459294 · Cited by 1,083 · see citing works
The Discovery and Development of Liraglutide and Semaglutide
Knudsen, L. B., & Lau, J. (2019) · Frontiers in Endocrinology · doi:10.3389/fendo.2019.00155 · Cited by 970 · see citing works
Martínez, I., Kim, J., Duffy, P. R., Schlegel, V. L., & Walter, J. (2010) · PLoS ONE · doi:10.1371/journal.pone.0015046 · Cited by 645 · see citing works
Martinez-Medina, M., Denizot, J., Dreux, N., Robin, F., Billard, E., Bonnet, R., Darfeuille-Michaud, A., & Barnich, N. (2014) · Gut · doi:10.1136/gutjnl-2012-304119 · Cited by 539 · see citing works
Rakipovski, G., Rolin, B., Nøhr, J., Klewe, I., Frederiksen, K. S., Augustin, R., Hecksher-Sørensen, J., Ingvorsen, C., Polex-Wolf, J., & Knudsen, L. B. (2018) · JACC: Basic to Translational Science · doi:10.1016/j.jacbts.2018.09.004 · Cited by 509 · see citing works
Can probiotics modulate human disease by impacting intestinal barrier function?
Bron, P. A., Kleerebezem, M., Brummer, R.-J., Cani, P. D., Mercenier, A., MacDonald, T. T., Garcia-Ródenas, C. L., & Wells, J. M. (2017) · British Journal Of Nutrition · doi:10.1017/s0007114516004037 · Cited by 499 · see citing works
“Among the reduced abundance bacterial groups were the bifidobacteria((87)), which”
BackgroundTremellen, K., & Pearce, K. (2012) · Medical Hypotheses · doi:10.1016/j.mehy.2012.04.016 · Cited by 359 · see citing works
Krumbeck, J. A., Rasmussen, H. E., Hutkins, R. W., Clarke, J., Shawron, K., Keshavarzian, A., & Walter, J. (2018) · Microbiome · doi:10.1186/s40168-018-0494-4 · Cited by 342 · see citing works
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Stenman, L. K., Holma, R., Eggert, A., & Korpela, R. (2013) · American Journal of Physiology-Gastrointestinal and Liver Physiology · doi:10.1152/ajpgi.00267.2012 · Cited by 222 · see citing works
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Xie, N., Cui, Y., Yin, Y.-N., Zhao, X., Yang, J.-W., Wang, Z.-G., Fu, N., Tang, Y., Wang, X.-H., Liu, X.-W., et al. (2011) · BMC Complementary and Alternative Medicine · doi:10.1186/1472-6882-11-53 · Cited by 211 · see citing works
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Probiotics: interaction with gut microbiome and antiobesity potential.
Arora, T., Singh, S., & Sharma, R. K. (2013) · Nutrition · doi:10.1016/j.nut.2012.07.017 · Cited by 176 · see citing works
Jung, S.-P., Lee, K.-M., Kang, J.-H., Yun, S.-I., Park, H.-O., Moon, Y., & Kim, J.-Y. (2013) · Korean Journal of Family Medicine · doi:10.4082/kjfm.2013.34.2.80 · Cited by 140 · see citing works
Cassani, L., Gomez-Zavaglia, A., & Simal-Gandara, J. (2020) · Food Research International · doi:10.1016/j.foodres.2019.108852 · Cited by 133 · see citing works
Rajkumar, H., Kumar, M., Das, N., Kumar, S. N., Challa, H. R., & Nagpal, R. (2015) · Journal of Cardiovascular Pharmacology and Therapeutics · doi:10.1177/1074248414555004 · Cited by 128 · see citing works
Impact of Probiotics on Risk Factors for Cardiovascular Diseases. A Review
Ebel, B., Lemetais, G., Beney, L., Cachon, R., Sokol, H., Langella, P., & Gervais, P. (2014) · Critical Reviews in Food Science and Nutrition · doi:10.1080/10408398.2011.579361 · Cited by 97 · see citing works
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Lam, Y. Y., Mitchell, A. J., Holmes, A. J., Denyer, G. S., Gummesson, A., Caterson, I. D., Hunt, N. H., & Storlien, L. H. (2011) · Obesity · doi:10.1038/oby.2011.68 · Cited by 97 · see citing works
Lam, Y., Maguire, S., Palacios, T., & Caterson, I. (2017) · Nutrients · doi:10.3390/nu9060602 · Cited by 86 · see citing works
“In obese rodents, antibiotics and prebiotics were able to restore gut barrier integrity and metabolic functions, providing evidence for the gut barrier as a mediator of microbiota-induced systemic inflammation [98,99].”
BackgroundChaplin, A., Parra, P., Serra, F., & Palou, A. (2015) · PLoS ONE · doi:10.1371/journal.pone.0125091 · Cited by 79 · see citing works
The mechanism of berberine alleviating metabolic disorder based on gut microbiome
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“Gut microbial Dysbiosis affects the integrity of the intestinal epithelium and increases blood levels of LPS (Cani and Delzenne, 2009; Tagliabue and Elli, 2013).”
BackgroundA role for the gut microbiota in energy harvesting?
Tremaroli, V., Kovatcheva-Datchary, P., & Bäckhed, F. (2010) · Gut · doi:10.1136/gut.2010.223594 · Cited by 38 · see citing works
Finamore, A., Peluso, I., & Serafini, M. (2016) · Probiotics, Prebiotics, and Synbiotics · doi:10.1016/b978-0-12-802189-7.00041-1 · Cited by 4 · see citing works
- Authors
- Cani, P. D., & Delzenne, N. M.
- Affiliations
- UCLouvain (BE)
- Corresponding author
- Cani, Patrice D
- Venue
- Current Opinion in Pharmacology
- Publisher
- Elsevier BV
- Published
- 2009-12
- Volume
- 9
- Issue
- 6
- Pages
- 737-743
- ISSN
- 1471-4892 (ISSN-L)
- OpenAlex
- W1982319117
- Cited by
- 377
- References
- 47
- Citations by year
- 2026: 5 · 2025: 12 · 2024: 11 · 2023: 16 · 2022: 19 · 2021: 16 · 2020: 20 · 2019: 30 · 2018: 20 · 2017: 22 · 2016: 19 · 2015: 32 · 2014: 35 · 2013: 31 · 2012: 30
- FWCI
- 11.80
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Current Opinion in Pharmacology (publishedVersion)
- PubMed (publishedVersion)
- DIAL (Catholic University of Leuven) (submittedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
- Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
- Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
- Keywords
- obesity, gut microbiota, dysbiosis, metabolic disorders, low-grade inflammation, energy storage, host metabolism, gnotobiotic animals, probiotics, prebiotics, microbiota-host interactions
- MeSH terms
- Animals, Bifidobacterium, Homeostasis, Humans, Inflammation, Models, Biological, Obesity, Drug Delivery Systems, Mice, Knockout, Probiotics, Metabolic Syndrome, Gastrointestinal Tract, Mice, Metagenome, Prebiotics
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