Intestinal microbiota influence the early postnatal development of the enteric nervous system
Abstract
BACKGROUND: Normal gastrointestinal function depends on an intact and coordinated enteric nervous system (ENS). While the ENS is formed during fetal life, plasticity persists in the postnatal period during which the gastrointestinal tract is colonized by bacteria. We tested the hypothesis that colonization of the bowel by intestinal microbiota influences the postnatal development of the ENS. METHODS: The development of the ENS was studied in whole mount preparations of duodenum, jejunum, and ileum of specific pathogen-free (SPF), germ-free (GF), and altered Schaedler flora (ASF) NIH Swiss mice at postnatal day 3 (P3). The frequency and amplitude of circular muscle contractions were measured in intestinal segments using spatiotemporal mapping of video recorded spontaneous contractile activity with and without exposure to lidocaine and N-nitro-L-arginine (NOLA). KEY RESULTS: Immunolabeling with antibodies to PGP9.5 revealed significant abnormalities in the myenteric plexi of GF jejunum and ileum, but not duodenum, characterized by a decrease in nerve density, a decrease in the number of neurons per ganglion, and an increase in the proportion of myenteric nitrergic neurons. Frequency of amplitude of muscle contractions were significantly decreased in the jejunum and ileum of GF mice and were unaffected by exposure to lidocaine, while NOLA enhanced contractile frequency in the GF jejunum and ileum. CONCLUSIONS & INFERENCES: These findings suggest that early exposure to intestinal bacteria is essential for the postnatal development of the ENS in the mid to distal small intestine. Future studies are needed to investigate the mechanisms by which enteric microbiota interact with the developing ENS.
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Animal studies suggest that the GM plays a crucial role in regulating early brain development.
“Animal studies suggest that the GM plays a crucial role in regulating early brain development (19, 45, 60, 114–117).”
From Signalling cognition: The gut microbiota and hypothalamic-pituitary-adrenal axis (2023) · cites this paper as [114]
The gut microbiota is essential for the development of the ENS.
“recent findings indicating that the gut microbiota is essential for the development of the ENS (Collins et al., 2014; Obata and Pachnis, 2016).”
From Microbiota-related Changes in Bile Acid & Tryptophan Metabolism are Associated with Gastrointestinal Dysfunction in a Mouse Model of Autism (2017) · cites this paper as Collins et al., 2014
Cites
Short chain fatty acids in human large intestine, portal, hepatic and venous blood
Cummings, J. H., Pomare, E. W., Branch, W. J., Naylor, C. P., & Macfarlane, G. T. (1987) · Gut · doi:10.1136/gut.28.10.1221 · Cited by 3,119 · see citing works
Douarin, N. M. L., & Kalcheim, C. (1999) · Cambridge University Press eBooks · doi:10.1017/cbo9780511897948 · Cited by 3,003 · see citing works
Commensal Host-Bacterial Relationships in the Gut
Hooper, L. V., & Gordon, J. I. (2001) · Science · doi:10.1126/science.1058709 · Cited by 2,362 · see citing works
Neuromorphic Silicon Neuron Circuits
Indiveri, G., Linares-Barranco, B., Hamilton, T. J., André, V. S., Etienne‐Cummings, R., Delbrück, T., Liu, S., Dudek, P., Hafliger, P. D., Renaud, S., et al. (2011) · Frontiers in Neuroscience · doi:10.3389/fnins.2011.00073 · Cited by 1,836 · see citing works
Intestinal microbiota in functional bowel disorders: a Rome foundation report
Simrén, M., Barbara, G., Flint, H. J., Spiegel, B. M. R., Spiller, R. C., Vanner, S., Verdu, E. F., Whorwell, P. J., & Zoetendal, E. G. (2013) · Gut · doi:10.1136/gutjnl-2012-302167 · Cited by 939 · see citing works
Self-citationUse of axenic animals in studying the adaptation of mammals to their commensal intestinal microbiota
Smith, K., McCoy, K. D., & Macpherson, A. J. (2006) · Seminars in Immunology · doi:10.1016/j.smim.2006.10.002 · Cited by 789 · see citing works
Stark, P. L., & Lee, A. (1982) · Journal of Medical Microbiology · doi:10.1099/00222615-15-2-189 · Cited by 616 · see citing works
Furness, J. B. (2008) · Springer eBooks · doi:10.1007/978-3-540-29678-2_3035 · Cited by 614 · see citing works
Protein Degradation by Human Intestinal Bacteria
Macfarlane, G. T., Cummings, J. H., & Allison, C. (1986) · Microbiology · doi:10.1099/00221287-132-6-1647 · Cited by 455 · see citing works
THE ENTERIC NERVOUS SYSTEM AND REGULATION OF INTESTINAL MOTILITY
Kunze, W., & Furness, J. B. (1999) · Annual Review of Physiology · doi:10.1146/annurev.physiol.61.1.117 · Cited by 403 · see citing works
Gut microbial products regulate murine gastrointestinal motility via Toll-like receptor 4 signaling
Anitha, M., Vijay–Kumar, M., Sitaraman, S. V., Gewirtz, A. T., & Srinivasan, S. (2012) · Gastroenterology · doi:10.1053/j.gastro.2012.06.034 · Cited by 397 · see citing works
Shroff, K. E., Meslin, K., & Cebra, J. J. (1995) · Infection and Immunity · doi:10.1128/iai.63.10.3904-3913.1995 · Cited by 397 · see citing works
Phylogeny of the Defined Murine Microbiota: Altered Schaedler Flora
Dewhirst, F. E., Chien, C., Paster, B. J., Ericson, R. L., Orcutt, R. P., Schauer, D. B., & Fox, J. G. (1999) · Applied and Environmental Microbiology · doi:10.1128/aem.65.8.3287-3292.1999 · Cited by 366 · see citing works
Kunze, W. A., Mao, Y., Wang, B., Huizinga, J. D., Ma, X., Forsythe, P., & Bienenstock, J. (2009) · Journal of Cellular and Molecular Medicine · doi:10.1111/j.1582-4934.2009.00686.x · Cited by 328 · see citing works
McVey Neufeld, K. A., Mao, Y. K., Bienenstock, J., Foster, J. A., & Kunze, W. A. (2013) · Neurogastroenterology & Motility · doi:10.1111/nmo.12049 · Cited by 299 · see citing works
Umesaki, Y., Setoyama, H., Matsumoto, S., & Okada, Y. (1993) · PubMed Central · Cited by 270 · see citing works
Time of origin of neurons in the murine enteric nervous system: Sequence in relation to phenotype
Pham, T. D., Gershon, M. D., & Rothman, T. P. (1991) · The Journal of Comparative Neurology · doi:10.1002/cne.903140411 · Cited by 246 · see citing works
Effect of the Normal Microbial Flora on Gastrointestinal Motility.
Abrams, G. D., & Bishop, J. E. (1967) · Experimental Biology and Medicine · doi:10.3181/00379727-126-32430 · Cited by 242 · see citing works
Quantitative analysis of peristalsis in the guinea‐pig small intestine using spatio‐temporal maps
Hennig, G. W., Costa, M., Chen, B. N., & Brookes, S. J. (1999) · The Journal of Physiology · doi:10.1111/j.1469-7793.1999.0575t.x · Cited by 213 · see citing works
THE GERMFREE ANIMAL IN NUTRITIONAL STUDIES
Wostmann, B. S. (1981) · Annual Review of Nutrition · doi:10.1146/annurev.nu.01.070181.001353 · Cited by 188 · see citing works
Grundy, D., & Schemann, M. (2006) · Current Opinion in Gastroenterology · doi:10.1097/01.mog.0000208459.46395.16 · Cited by 116 · see citing works
Huizinga, J. D., Martz, S., Gil, V., Wang, X.-Y., Jiménez, M., & Parsons, S. (2011) · Frontiers in Neuroscience · doi:10.3389/fnins.2011.00093 · Cited by 112 · see citing works
Comparative morphology of interstitial cells of Cajal: Ultrastructural characterization
Komuro, T. (1999) · Microscopy Research and Technique · doi:10.1002/(sici)1097-0029(19991115)47:4 · Cited by 110 · see citing works
Wang, B., Mao, Y., Diorio, C. J., Pasyk, M., Wu, R., Bienenstock, J., & Kunze, W. (2010) · The FASEB Journal · doi:10.1096/fj.09-153841 · Cited by 98 · see citing works
Foong, J. P. P., Nguyen, T. V., Furness, J. B., Bornstein, J. C., & Young, H. M. (2012) · The Journal of Physiology · doi:10.1113/jphysiol.2011.225938 · Cited by 91 · see citing works
Faure, C. C., Chalazonitis, A., Rhéaume, C., Bouchard, G., Sampathkumar, S., Yarema, K. J., & Gershon, M. D. (2006) · Developmental Dynamics · doi:10.1002/dvdy.20943 · Cited by 75 · see citing works
Giancamillo, A. D., Vitari, F., Bosi, G., Savoini, G., & Domeneghini, C. (2010) · Neurogastroenterology & Motility · doi:10.1111/j.1365-2982.2010.01529.x · Cited by 67 · see citing works
Vries, P. D., Soret, R., Suply, E., Héloury, Y., & Neunlist, M. (2010) · American Journal of Physiology-Gastrointestinal and Liver Physiology · doi:10.1152/ajpgi.00092.2010 · Cited by 67 · see citing works
Suply, E., de Vries, P., Soret, R., Cossais, F., & Neunlist, M. (2012) · American Journal of Physiology-Gastrointestinal and Liver Physiology · doi:10.1152/ajpgi.00338.2011 · Cited by 62 · see citing works
Morphological changes of the myenteric plexus during early postnatal development of the rat
Sch�fer, K.-H., H�nsgen, A., & Mestres, P. (1999) · The Anatomical Record · doi:10.1002/(sici)1097-0185(19990901)256:1 · Cited by 60 · see citing works
Development of the Enteric Nervous System
Gershon, M. D. (2002) · CRC Press eBooks · doi:10.3109/9780203217016-15 · Cited by 54 · see citing works
Auerbach's plexus of the rat cecum in relation to the germfree state
Dupont, J., Jervis, H. R., & Sprinz, H. (1965) · The Journal of Comparative Neurology · doi:10.1002/cne.901250103 · Cited by 52 · see citing works
D'Autréaux, F., Margolis, K. G., Roberts, J., Stevanovic, K., Mawe, G., Li, Z., Karamooz, N., Ahuja, A., Morikawa, Y., Cserjesi, P., et al. (2011) · Gastroenterology · doi:10.1053/j.gastro.2011.04.059 · Cited by 47 · see citing works
Bian, X., Burda, J. E., Carrasquillo, M., & Galligan, J. J. (2009) · Neurogastroenterology & Motility · doi:10.1111/j.1365-2982.2009.01296.x · Cited by 13 · see citing works
Gershon, M. D. (2012) · The Journal of Physiology · doi:10.1113/jphysiol.2012.232769 · Cited by 12 · see citing works
Boddy, G., Willis, A., Galante, G., & Daniel, E. E. (2006) · Canadian Journal of Physiology and Pharmacology · doi:10.1139/y06-009 · Cited by 10 · see citing works
Development of the Enteric Nervous System
Gershon, M. D., & Ratcliffe, E. M. (2006) · Elsevier eBooks · doi:10.1016/b978-012088394-3/50021-0 · Cited by 9 · see citing works
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Cited by
Sorted by citations
Cryan, J. F., O'Riordan, K. J., Cowan, C. S. M., Sandhu, K. V., Bastiaanssen, T. F. S., Boehme, M., Codagnone, M. G., Cussotto, S., Fulling, C., Golubeva, A. V., et al. (2019) · Physiological Reviews · doi:10.1152/physrev.00018.2018 · Cited by 5,286 · see citing works
The gut microbiota–brain axis in behaviour and brain disorders
Morais, L. H., Schreiber, H. L., & Mazmanian, S. K. (2021) · Nature Reviews Microbiology · doi:10.1038/s41579-020-00460-0 · Cited by 2,149 · see citing works
Dysbiosis of the gut microbiota in disease
Carding, S., Verbeke, K., Vipond, D. T., Corfe, B. M., & Owen, L. J. (2015) · Microbial Ecology in Health & Disease · doi:10.3402/mehd.v26.26191 · Cited by 1,710 · see citing works
“Early colonisation of the intestinal tract by microbes is known to be important for the post-natal development of the enteric nervous system (77).”
BackgroundThe Human Gut Microbiome – A Potential Controller of Wellness and Disease
Kho, Z. Y., & Lal, S. K. (2018) · Frontiers in Microbiology · doi:10.3389/fmicb.2018.01835 · Cited by 1,116 · see citing works
Psychobiotics and the manipulation of bacteria–gut–brain signals
Sarkar, A., Lehto, S. M., Harty, S., Dinan, T. G., Cryan, J. F., & Burnet, P. W. J. (2016) · Trends in Neurosciences · doi:10.1016/j.tins.2016.09.002 · Cited by 1,068 · see citing works
“One study found evidence of intestinal neural abnormalities in the jejunum and ileum of germ-free mice in comparison to controls [54], with germ-free mice showing reduced nerve density, fewer nerves per ganglion, and a greater number of myenteric nitrergic neurons.”
Role of Lactobacillus reuteri in Human Health and Diseases
Mu, Q., Tavella, V. J., & Luo, X. M. (2018) · Frontiers in Microbiology · doi:10.3389/fmicb.2018.00757 · Cited by 744 · see citing works
“Moreover, germ-free animals show defective ENS morphology and excitability, which can be reversed by microbiota colonization (McVey Neufeld et al., 2013; Collins et al., 2014).”
BackgroundGut microbiome and aging: physiological and mechanistic insights
Nagpal, R., Mainali, R., Ahmadi, S., Wang, S., Singh, R., Kavanagh, K., Kitzman, D. W., Kushugulova, A., Marotta, F., & Yadav, H. (2018) · Nutrition and Healthy Aging · doi:10.3233/nha-170030 · Cited by 670 · see citing works
Our gut microbiome: The evolving inner self
Kundu, P., Blacher, E., Elinav, E., & Pettersson, S. (2017) · Cell · doi:10.1016/j.cell.2017.11.024 · Cited by 633 · see citing works
“Even though the infant gut microbiota is less diverse, it has a significant impact on ENS development, as recently shown by the reduction of myenteric neurons in germ-free mice at postnatal day 3 compared to conventionally raised mice (Collins et al., 2014; Kabouridis et al., 2015).”
Luczynski, P., McVey Neufeld, K.-A., Oriach, C. S., Clarke, G., Dinan, T. G., & Cryan, J. F. (2016) · International Journal of Neuropsychopharmacology · doi:10.1093/ijnp/pyw020 · Cited by 632 · see citing works
“In the small intestine, GF mice have decreased overall nerve density, with fewer neuronal cell bodies in myenteric ganglia and less connective nerve fibers between ganglia (Collins et al., 2014).”
BackgroundDe Vadder, F., Grasset, E., Mannerås Holm, L., Karsenty, G., Macpherson, A. J., Olofsson, L. E., & Bäckhed, F. (2018) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1720017115 · Cited by 566 · see citing works
The Enteric Network: Interactions between the Immune and Nervous Systems of the Gut
Yoo, B. B., & Mazmanian, S. K. (2017) · Immunity · doi:10.1016/j.immuni.2017.05.011 · Cited by 479 · see citing works
“Furthermore, GF animals display defects in ENS morphology (Collins et al., 2014) and excitability (McVey Neufeld et al.”
BackgroundSignalling cognition: The gut microbiota and hypothalamic-pituitary-adrenal axis
Rusch, J. A., Layden, B. T., & Dugas, L. R. (2023) · Frontiers in Endocrinology · doi:10.3389/fendo.2023.1130689 · Cited by 415 · see citing works
“animal models have demonstrated downstream effects on various aspects of neurocognitive function (19, 45, 60, 114, 115).”
BackgroundSharkey, K. A., & Mawe, G. M. (2022) · Physiological Reviews · doi:10.1152/physrev.00018.2022 · Cited by 423 · see citing works
The mucosal immune system: master regulator of bidirectional gut-brain communications
Powell, N., Walker, M. M., & Talley, N. J. (2017) · Nature Reviews Gastroenterology & Hepatology · doi:10.1038/nrgastro.2016.191 · Cited by 379 · see citing works
Kanmani, S., & Koo, B. (2020) · International Journal of Molecular Sciences · doi:10.3390/ijms21207551 · Cited by 381 · see citing works
“Germ-free (GF) mice exhibit abnormalities in the development of the gastrointestinal tract, compared to specific pathogen-free (SPF) and GF-conventional mice, suggesting that commensal gut bacteria are important for the early postnatal development of the enteric nervous system (ENS) in the intestine [6,7].”
BackgroundGolubeva, A. V., Joyce, S. A., Moloney, G., Burokas, A., Sherwin, E., Arboleya, S., Flynn, I., Khochanskiy, D., Moya-Pérez, A., Peterson, V., et al. (2017) · EBioMedicine · doi:10.1016/j.ebiom.2017.09.020 · Cited by 364 · see citing works
“…we stained the myenteric plexus (MP) in distal colon against choline acetyltransferase (ChAT), which is S These are interesting data in the context of recent findings indicating that the gut microbiota is essential for the development of the ENS (Collins et al., 2014; Obata and Pachnis, 2016).”
InfluentialMicrobiota controls the homeostasis of glial cells in the gut lamina propria
Kabouridis, P. S., Lasrado, R., McCallum, S., Chng, S. H., Snippert, H. J., Clevers, H., Pettersson, S., & Pachnis, V. (2015) · Neuron · doi:10.1016/j.neuron.2014.12.037 · Cited by 358 · see citing works
“neural networks (Abrams and Bishop, 1967; Collins et al., 2014; McVey Neufeld et al., 2013).”
Neuronal programming by microbiota regulates intestinal physiology
Obata, Y., Castaño, Á., Boeing, S., Bon‐Frauches, A. C., Fung, C., Fallesen, T. L., de Agüero, M. G., Yılmaz, B., Lopes, R., Huseynova, A., et al. (2020) · Nature · doi:10.1038/s41586-020-1975-8 · Cited by 356 · see citing works
The impact of the microbiota-gut-brain axis on Alzheimer’s disease pathophysiology
Doifode, T., Giridharan, V. V., Generoso, J. S., Bhatti, G., Collodel, A., Schulz, P. E., Forlenza, O. V., & Barichello, T. (2021) · Pharmacological Research · doi:10.1016/j.phrs.2020.105314 · Cited by 347 · see citing works
Intestinal microbiota shapes gut physiology and regulates enteric neurons and glia
Vicentini, F., Keenan, C. M., Wallace, L. E., Woods, C., Cavin, J., Flockton, A. R., Macklin, W. B., Belkind‐Gerson, J., Hirota, S. A., & Sharkey, K. A. (2021) · Microbiome · doi:10.1186/s40168-021-01165-z · Cited by 332 · see citing works
Irritable bowel syndrome: A microbiome-gut-brain axis disorder?
Kennedy, P. J. (2014) · World Journal of Gastroenterology · doi:10.3748/wjg.v20.i39.14105 · Cited by 335 · see citing works
Gut microbiota role in irritable bowel syndrome: New therapeutic strategies
Distrutti, E., Monaldi, L., Ricci, P., & Fiorucci, S. (2016) · World Journal of Gastroenterology · doi:10.3748/wjg.v22.i7.2219 · Cited by 320 · see citing works
Heiss, C. N., & Olofsson, L. E. (2019) · Journal of Neuroendocrinology · doi:10.1111/jne.12684 · Cited by 304 · see citing works
Shandilya, S., Kumar, S., Jha, N. K., Kesari, K. K., & Ruokolainen, J. (2021) · Journal of Advanced Research · doi:10.1016/j.jare.2021.09.005 · Cited by 300 · see citing works
“the development of various organs [7].”
Xie, G., Zhou, Q., Qiu, C.-Z., Dai, W.-K., Wang, H.-P., Li, Y.-H., Liao, J.-X., Lu, X.-G., Lin, S.-F., Ye, J.-H., et al. (2017) · World Journal of Gastroenterology · doi:10.3748/wjg.v23.i33.6164 · Cited by 291 · see citing works
Golubeva, A. V., Crampton, S., Desbonnet, L., Edge, D., O'Sullivan, O., Lomasney, K. W., Zhdanov, A. V., Crispie, F., Moloney, R. D., Borre, Y. E., et al. (2015) · Psychoneuroendocrinology · doi:10.1016/j.psyneuen.2015.06.002 · Cited by 283 · see citing works
“Re-colonisation of germ-free female mice prior to conception restored innervation deficit in the offspring to normal levels (Collins et al., 2014).”
BackgroundObata, Y., & Pachnis, V. (2016) · Gastroenterology · doi:10.1053/j.gastro.2016.07.044 · Cited by 278 · see citing works
Unexpected Roles for the Second Brain: Enteric Nervous System as Master Regulator of Bowel Function
Schneider, S., Wright, C. M., & Heuckeroth, R. O. (2018) · Annual Review of Physiology · doi:10.1146/annurev-physiol-021317-121515 · Cited by 239 · see citing works
Paediatric functional abdominal pain disorders
Thapar, N., Benninga, M. A., Crowell, M. D., Di Lorenzo, C., Mack, I., Nurko, S., Saps, M., Shulman, R. J., Szajewska, H., van Tilburg, M. A. L., et al. (2020) · Nature Reviews Disease Primers · doi:10.1038/s41572-020-00222-5 · Cited by 221 · see citing works
The Altered Schaedler Flora: Continued Applications of a Defined Murine Microbial Community
Brand, M. W., Wannemuehler, M. J., Phillips, G. J., Proctor, A., Overstreet, A.-M. C., Jergens, A. E., Orcutt, R. P., & Fox, J. G. (2015) · ILAR Journal · doi:10.1093/ilar/ilv012 · Cited by 213 · see citing works
“In fact, the ENS of ASF-colonizedmicewas similar to that found in conventionally reared, SPF animals (Collins et al. 2014).”
BackgroundChudzik, A., Orzyłowska, A., Rola, R., & Stanisz, G. J. (2021) · Biomolecules · doi:10.3390/biom11071000 · Cited by 212 · see citing works
“Research to date suggests that specific bacterial strains may play a critical role in the development and function of the ENS, and exposure to bacteria at birth and during early life is essential for the postnatal development of the enteric nervous system [100].”
BackgroundWang, S., Yu, Y., & Adeli, K. (2020) · Microorganisms · doi:10.3390/microorganisms8040527 · Cited by 214 · see citing works
“Previous studies have demonstrated that the jejunum and ileum of GF mice showed a smaller number of neuronal cell bodies per ganglion and decreased nerve density in comparison to specific pathogen-free (SPF) mice [102].”
ResultTănase, D. M., Gosav, E. M., Neculae, E., Costea, C. F., Ciocoiu, M., Hurjui, L. L., Tărniceriu, C. C., Maranducă, M. A., Lăcătușu, C.-M., Floria, M., et al. (2020) · Nutrients · doi:10.3390/nu12123719 · Cited by 209 · see citing works
Microbe-host interactions: influence of the gut microbiota on the enteric nervous system
Hyland, N. P., & Cryan, J. F. (2016) · Developmental Biology · doi:10.1016/j.ydbio.2016.06.027 · Cited by 207 · see citing works
“In terms of the number of neurones per myenteric ganglia, these were decreased in both the jejunum and ileum in which increased nitrergic neurones were also observed; though this may also represent a loss of nonnitrergic neurones (Collins et al., 2014).”
BackgroundEnteric nervous system development: what could possibly go wrong?
Rao, M., & Gershon, M. D. (2018) · Nature reviews. Neuroscience · doi:10.1038/s41583-018-0041-0 · Cited by 201 · see citing works
Disorders of the enteric nervous system — a holistic view
Niesler, B., Küerten, S., Demir, İ. E., & Schäfer, K. (2021) · Nature Reviews Gastroenterology & Hepatology · doi:10.1038/s41575-020-00385-2 · Cited by 198 · see citing works
Gut Microbiota: The Brain Peacekeeper
Mu, C., Yang, Y., & Zhu, W. (2016) · Frontiers in Microbiology · doi:10.3389/fmicb.2016.00345 · Cited by 188 · see citing works
“The abnormality is related to a decrease in the nerve density and the number of neuronal cell bodies per ganglion, while an increase in nitrergic neurons on postnatal day 3 (Collins et al., 2014).”
BackgroundMicrobiota regulates visceral pain in the mouse
Luczynski, P., Tramullas, M., Viola, M. F., Shanahan, F., Clarke, G. A., O’Mahony, S. M., Dinan, T. G., & Cryan, J. F. (2017) · eLife · doi:10.7554/elife.25887 · Cited by 166 · see citing works
“Interestingly, the development in early life and function of the enteric nervous system (ENS) in adulthood is altered in GF mice (Collins et al., 2014; McVey Neufeld et al., 2013).”
Kadosh, K. C., Muhardi, L., Parikh, P., Basso, M., Mohamed, H. J. J., Prawitasari, T., Samuel, F. O., Ma, G., & Geurts, J. M. W. (2021) · Nutrients · doi:10.3390/nu13010199 · Cited by 186 · see citing works
Checa-Ros, A., Jeréz-Calero, A., Molina-Carballo, A., Campoy, C., & Muñoz-Hoyos, A. (2021) · Nutrients · doi:10.3390/nu13010249 · Cited by 164 · see citing works
“Germ-free (GF) mice displayed significant abnormalities in the ENS structure and neurochemistry in the early postnatal period, which disappeared after colonization [37].”
BackgroundThe enteric nervous system in gastrointestinal disease etiology
Holland, A. M., Bon‐Frauches, A. C., Keszthelyi, D., Melotte, V., & Boesmans, W. (2021) · Cellular and Molecular Life Sciences · doi:10.1007/s00018-021-03812-y · Cited by 164 · see citing works
Moody microbes or fecal phrenology: what do we know about the microbiota-gut-brain axis?
Forsythe, P., Kunze, W., & Bienenstock, J. (2016) · BMC Medicine · doi:10.1186/s12916-016-0604-8 · Cited by 155 · see citing works
“both density and activity of enteric neurons [17, 24].”
Psychobiotics: The Next-Generation Probiotics for the Brain
Sharma, R., Gupta, D., Mehrotra, R., & Mago, P. (2021) · Current Microbiology · doi:10.1007/s00284-020-02289-5 · Cited by 155 · see citing works
Impact of Microbial Metabolites on Microbiota–Gut–Brain Axis in Inflammatory Bowel Disease
Banfi, D., Moro, E., Bosi, A., Bistoletti, M., Cerantola, S., Crema, F., Maggi, F., Giron, M. C., Giaroni, C., & Baj, A. (2021) · International Journal of Molecular Sciences · doi:10.3390/ijms22041623 · Cited by 159 · see citing works
“anomalies, which are not observed in the conventionalized ex-GF counterpart and specific pathogen free (SPF) controls [128,129].”
BackgroundRaimondi, I., Izzo, L., Tunesi, M., Comar, M., Albani, D., & Giordano, C. (2020) · Frontiers in Bioengineering and Biotechnology · doi:10.3389/fbioe.2019.00435 · Cited by 147 · see citing works
“…profile and function of the ENS decrease during the development of the enteric neural network compared to SPF mice or dams colonized with microbiota (Collins et al., 2014; Lomasney et al., 2014), suggesting that microbiota influences the development of the ENS (Hyland and Cryan, 2016).”
BackgroundNeuroimmune regulation during intestinal development and homeostasis
Veiga‐Fernandes, H., & Pachnis, V. (2017) · Nature Immunology · doi:10.1038/ni.3634 · Cited by 144 · see citing works
McVey Neufeld, K. A., Perez‐Burgos, A., Mao, Y. K., Bienenstock, J., & Kunze, W. A. (2015) · Neurogastroenterology & Motility · doi:10.1111/nmo.12534 · Cited by 142 · see citing works
Enteric nervous system: the bridge between the gut microbiota and neurological disorders
Geng, Z.-H., Zhu, Y., Li, Q.-L., Zhao, C., & Zhou, P.-H. (2022) · Frontiers in Aging Neuroscience · doi:10.3389/fnagi.2022.810483 · Cited by 144 · see citing works
“A general reduction in the myenteric plexus density has been observed in both the jejunum and the ileum of postnatal germfree (GF) mice, but not in the duodenum; this suggests that early exposure to gut microbes is essential for the postnatal development of the ENS (Collins et al., 2014).”
BackgroundYarandi, S. S., Kulkarni, S., Saha, M., Sylvia, K. E., Sears, C. L., & Pasricha, P. J. (2020) · Gastroenterology · doi:10.1053/j.gastro.2020.03.050 · Cited by 138 · see citing works
Autism Spectrum Disorder as a Brain-Gut-Microbiome Axis Disorder
Saurman, V. E., Margolis, K. G., & Luna, R. A. (2020) · Digestive Diseases and Sciences · doi:10.1007/s10620-020-06133-5 · Cited by 140 · see citing works
Psychobiotics and the gut–brain axis: in the pursuit of happiness
Foster, J. A., & Zhou, L. (2015) · Neuropsychiatric Disease and Treatment · doi:10.2147/ndt.s61997 · Cited by 137 · see citing works
“The myenteric plexus of the jejunum and ileum of GF mice showed an unorganized lattice-like appearance, with fewer ganglia, and thinner nerve fibers.(24) Intestinal motility, measured as frequency of spontaneous muscle contractions, was decreased in GF mice, as was the amplitude of muscle contractions in GF mice compa…”
InfluentialGut microbiota regulates lacteal integrity by inducing VEGF‐C in intestinal villus macrophages
Suh, S. H., Choe, K., Hong, S. P., Jeong, S., Mäkinen, T., Kim, K. S., Alitalo, K. K., Surh, C. D., Koh, G. Y., & Song, J. (2019) · EMBO Reports · doi:10.15252/embr.201846927 · Cited by 133 · see citing works
“Similarly, gut microbiota governs development of the enteric nervous system only in the jejunum and ileum but not the duodenum [28,51].”
Enteric neuroimmune interactions coordinate intestinal responses in health and disease
Wang, H., Foong, J. P. P., Harris, N. L., & Bornstein, J. C. (2021) · Mucosal Immunology · doi:10.1038/s41385-021-00443-1 · Cited by 128 · see citing works
Gut microbiome and anticancer immune response: really hot Sh*t!
Viaud, S., Daillère, R., Boneca, I. G., Lepage, P., Langella, P., Chamaillard, M., Pittet, M. J., Ghiringhelli, F., Trinchieri, G., Goldszmid, R., et al. (2015) · Cell Death & Differentiation · doi:10.1038/cdd.2014.56 · Cited by 123 · see citing works
“Finally, intestinal bacteria are essential for the postnatal development of the enteric nervous system in the mid-distal SI.(18)”
BackgroundBicknell, B. T., Liebert, A. D., Borody, T. J., Herkes, G., McLachlan, C. S., & Kiat, H. (2023) · International Journal of Molecular Sciences · doi:10.3390/ijms24119577 · Cited by 129 · see citing works
“In germ-free animal models, many aspects of neurodevelopment have been shown to be compromised, including neurogenesis and myelination [103] and dendritic spine development [104], as well as abnormal ENS development [105], which can be reversed by the post-natal transplant of a normal microbiome.”
Antibiotic-induced dysbiosis of the microbiota impairs gut neuromuscular function in juvenile mice
Caputi, V., Marsilio, I., Filpa, V., Cerantola, S., Orso, G., Bistoletti, M., Paccagnella, N., De Martin, S., Montopoli, M., Dall'Acqua, S., et al. (2017) · British Journal of Pharmacology · doi:10.1111/bph.13965 · Cited by 124 · see citing works
“In mammals, young adulthood represents a critical and dynamic phase for differentiation and maturation of neural circuits in the gut (Collins et al., 2014).”
BackgroundResultHost‐microbe interaction in the gastrointestinal tract
Parker, A., Lawson, M. A., Vaux, L., & Pin, C. (2017) · Environmental Microbiology · doi:10.1111/1462-2920.13926 · Cited by 123 · see citing works
“Feature Altered phenotype in germ-free Model References Transit of luminal contents Delayed gastric emptying and prolonged transit Mouse (Abrams and Bishop, 1967; Iwai et al., 1973) Chicken (Palmer and Rolls, 1981; Furuse and Okumura, 1994) Crypt-villus morphology Thinner villi with shallower crypts, reduced thickness…”
BackgroundInfluentialRajpoot, M., Sharma, A. K., Sharma, A. K., & Gupta, G. K. (2018) · Seminars in Cancer Biology · doi:10.1016/j.semcancer.2018.02.003 · Cited by 116 · see citing works
Vincent, A. D., Wang, X., Parsons, S. P., Khan, W. I., & Huizinga, J. D. (2018) · American Journal of Physiology-Gastrointestinal and Liver Physiology · doi:10.1152/ajpgi.00237.2017 · Cited by 116 · see citing works
“Motility has been studied in some detail in the small intestine of GF mice (13, 33, 57, 58), yet few studies have reported on motility of the colon in these mice.”
BackgroundTargeting the gut to treat multiple sclerosis
Ghezzi, L., Cantoni, C., Pinget, G. V., Zhou, Y., & Piccio, L. (2021) · Journal of Clinical Investigation · doi:10.1172/jci143774 · Cited by 114 · see citing works
“Gut microbiota influence both CNS and ENS development, as evident in GF mice, whose myenteric plexus is structurally abnormal, exhibiting decreased nerve density and number of neurons per ganglion (86).”
BackgroundKabouridis, P. S., & Pachnis, V. (2015) · Journal of Clinical Investigation · doi:10.1172/jci76308 · Cited by 112 · see citing works
“The effect of microbiota on the formation of neural circuits in the mammalian gut is highlighted by studies of germ-free mice that demonstrated that these animals have altered spontaneous circular muscle contractions and decreased nerve density in the jejunum and ileum (101).”
The Gut Microbiome as Therapeutic Target in Central Nervous System Diseases: Implications for Stroke
Winek, K., Dirnagl, U., & Meisel, A. (2016) · Neurotherapeutics · doi:10.1007/s13311-016-0475-x · Cited by 108 · see citing works
“absence of microorganisms is not fully developed, and GFmice have an altered intestinal motility [22].”
BackgroundSwine gut microbiota and its interaction with host nutrient metabolism
Wang, H., Xu, R., Zhang, H., Su, Y., & Zhu, W. (2020) · Animal nutrition · doi:10.1016/j.aninu.2020.10.002 · Cited by 109 · see citing works
“This multi-lateral network of communication between the gut microbiota and the central nervous system (CNS, representing the headquarters of the body) is mediated by the autonomic nervous system (ANS), enteric nervous system, immune system and bacterial metabolites (Junges et al., 2018).”
BackgroundInfluentialEnteric nervous system and intestinal epithelial regulation of the gut-brain axis
Dowling, L. R. C., Strazzari, M. R., Keely, S., & Kaiko, G. E. (2022) · Journal of Allergy and Clinical Immunology · doi:10.1016/j.jaci.2022.07.015 · Cited by 110 · see citing works
Gut microbiota, nutrient sensing and energy balance
Duca, F. A., & Lam, T. K. T. (2014) · Diabetes Obesity and Metabolism · doi:10.1111/dom.12340 · Cited by 103 · see citing works
“Moreover, both development of the enteric nervous system and excitability of primary afferents in the myenteric plexus are altered in GF mice [64,65], furthering the possibility that the microbiota can have a direct influence on intestinal nutrient-sensing mechanisms.”
BackgroundThe Use of Defined Microbial Communities To Model Host-Microbe Interactions in the Human Gut
Elzinga, J., John van der, O. O. S. T., de Vos, W. M., & Smidt, H. (2019) · Microbiology and Molecular Biology Reviews · doi:10.1128/mmbr.00054-18 · Cited by 101 · see citing works
Eltokhi, A., Janmaat, I. E., Genedi, M., Haarman, B. C. M., & Sommer, I. E. (2020) · Journal of Neuroscience Research · doi:10.1002/jnr.24616 · Cited by 100 · see citing works
Roles of gut microbiome in epilepsy risk: A Mendelian randomization study
Zeng, Y., Cao, S., & Yang, H. (2023) · Frontiers in Microbiology · doi:10.3389/fmicb.2023.1115014 · Cited by 97 · see citing works
“Investigations have shown that GMs play a vital role in the development of the enteric nervous system, blood–brain barrier, and glial cells, which are all important for cognitive development and behavior regulation (Braniste et al., 2014; Collins et al., 2014).”
BackgroundPekmez, C. T., Dragsted, L. O., & Brahe, L. K. (2018) · Clinical Nutrition · doi:10.1016/j.clnu.2018.02.014 · Cited by 94 · see citing works
Brun, P., Gobbo, S., Caputi, V., Spagnol, L., Schirato, G., Pasqualin, M., Levorato, E., Palù, G., Giron, M. C., & Castagliuolo, I. (2015) · Molecular and Cellular Neuroscience · doi:10.1016/j.mcn.2015.03.018 · Cited by 92 · see citing works
“Derangement in the composition of the gut microbial community is a central or a contributing cause ofmanyGI diseases possibly by altering the intestinal neurotransmission pathways (Collins et al., 2014).”
Chandrasekharan, B., Saeedi, B. J., Alam, A., Houser, M., Srinivasan, S., Tansey, M., Jones, R., Nusrat, A., & Neish, A. S. (2019) · Gastroenterology · doi:10.1053/j.gastro.2019.03.045 · Cited by 94 · see citing works
Neuro-immune regulation of mucosal physiology
Chesné, J., Cardoso, V., & Veiga‐Fernandes, H. (2018) · Mucosal Immunology · doi:10.1038/s41385-018-0063-y · Cited by 92 · see citing works
Targeting the gut microbiota to influence brain development and function in early life
Wang, S., Harvey, L., Martı́n, R., van der Beek, E. M., Knol, J., Cryan, J. F., & Renes, I. B. (2018) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2018.09.002 · Cited by 92 · see citing works
Gut-Brain Axis in the Early Postnatal Years of Life: A Developmental Perspective
Jena, A., Montoya, C. A., Mullaney, J. A., Dilger, R. N., Young, W., McNabb, W. C., & Roy, N. C. (2020) · Frontiers in Integrative Neuroscience · doi:10.3389/fnint.2020.00044 · Cited by 92 · see citing works
The microbiota-gut-brain axis: Focus on the fundamental communication pathways
Bistoletti, M., Bosi, A., Banfi, D., Giaroni, C., & Baj, A. (2020) · Progress in molecular biology and translational science · doi:10.1016/bs.pmbts.2020.08.012 · Cited by 88 · see citing works
Cellular Organization of Neuroimmune Interactions in the Gastrointestinal Tract
Margolis, K. G., Gershon, M. D., & Bogunovic, M. (2016) · Trends in Immunology · doi:10.1016/j.it.2016.05.003 · Cited by 86 · see citing works
“Germ-free mice exhibit significant ENS abnormalities, including a decline in the myenteric, particularly nitrergic, neurons in the jejunum, ileum, and colon [61,62].”
BackgroundNeuroimmune Interactions in the Intestine
Wallrapp, A., & Chiu, I. M. (2024) · Annual Review of Immunology · doi:10.1146/annurev-immunol-101921-042929 · Cited by 91 · see citing works
O’Donovan, S. M., Crowley, E. K., Brown, J. R. ‐., O’Sullivan, O., O’Leary, O. F., Timmons, S., Nolan, Y. M., Clarke, D. J., Hyland, N. P., Joyce, S. A., et al. (2020) · Neurogastroenterology & Motility · doi:10.1111/nmo.13726 · Cited by 86 · see citing works
Enteric nervous system assembly: Functional integration within the developing gut
Hao, M. M., Foong, J. P. P., Bornstein, J. C., Li, Z. L., Berghe, P. V., & Boesmans, W. (2016) · Developmental Biology · doi:10.1016/j.ydbio.2016.05.030 · Cited by 82 · see citing works
Sanchez, J. B., & Kadrofske, M. M. (2019) · Neurogastroenterology & Motility · doi:10.1111/nmo.13569 · Cited by 81 · see citing works
Aktar, R., Parkar, N., Stentz, R., Baumard, L., Parker, A., Goldson, A. J., Brion, A., Carding, S. R., Blackshaw, L. A., & Peiris, M. (2020) · Gut Microbes · doi:10.1080/19490976.2020.1766936 · Cited by 80 · see citing works
“Studying germ-free (GF) mice has shown host–microbe interactions and the influence of the microbiome on neuron size, architecture and colon function.(5,6) However, despite these advances, there is no suggestion of how specific bacteria induce these changes.”
BackgroundMicrobiome, Parkinson’s Disease and Molecular Mimicry
Miraglia, F., & Colla, E. (2019) · Cells · doi:10.3390/cells8030222 · Cited by 81 · see citing works
Padhi, P., Worth, C., Zenitsky, G. D., Jin, H., Sambamurti, K., Anantharam, V., Kanthasamy, A., & Kanthasamy, A. G. (2022) · Frontiers in Neuroscience · doi:10.3389/fnins.2022.836605 · Cited by 80 · see citing works
Gut microbiota and microbial metabolites for osteoporosis
Zheng, X.-Q., Wang, D.-B., Jiang, Y., & Song, C. (2024) · Gut Microbes · doi:10.1080/19490976.2024.2437247 · Cited by 89 · see citing works
The gut microbiome in disorders of gut–brain interaction
Kraïmi, N., Ross, T., Pujo, J., & Palma, G. D. (2024) · Gut Microbes · doi:10.1080/19490976.2024.2360233 · Cited by 86 · see citing works
“18 26–34 Indeed, it is now well known that the gut microbiome is beneficial to multiple aspects of host function, from host-metabolism, biochemical regulation of processes such as gluconeogenesis, lipogenesis, and cholesterol synthesis, 35 to healthy aging.”
BackgroundSpontaneous body contractions are modulated by the microbiome of Hydra
Murillo‐Rincón, A. P., Klimovich, A. V., Pemöller, E., Taubenheim, J., Mortzfeld, B. M., Augustin, R., & Bosch, T. C. G. (2017) · Scientific Reports · doi:10.1038/s41598-017-16191-x · Cited by 77 · see citing works
Gut-microbiota derived bioactive metabolites and their functions in host physiology
Debnath, N., Kumar, R., Kumar, A., Mehta, P. K., & Yadav, A. K. (2021) · Biotechnology and Genetic Engineering Reviews · doi:10.1080/02648725.2021.1989847 · Cited by 77 · see citing works
The Influence of Early Life Nutrition on Epigenetic Regulatory Mechanisms of the Immune System
Paparo, L., Costanzo, M. D., Scala, C. D., Cosenza, L., Leone, L., Nocerino, R., & Canani, R. B. (2014) · Nutrients · doi:10.3390/nu6114706 · Cited by 77 · see citing works
Systems-level metabolism of the altered Schaedler flora, a complete gut microbiota
Biggs, M. B., Medlock, G. L., Moutinho, T. J., Lees, H., Swann, J. R., Kolling, G. L., & Papin, J. A. (2016) · The ISME Journal · doi:10.1038/ismej.2016.130 · Cited by 76 · see citing works
“ASF-colonized mice are commercially available and widely used (Singer and Nash, 2000; SarmaRupavtarm et al., 2004; Ge et al., 2006; Stehr et al., 2009; Collins et al., 2014; Henderson et al., 2015; Moghadamrad et al., 2015; Shen et al., 2015).”
He, Y., Wang, K., Su, N., Yuan, C., Zhang, N., Hu, X., Fu, Y., & Zhao, F. (2024) · Journal of Cellular and Molecular Medicine · doi:10.1111/jcmm.70099 · Cited by 73 · see citing works
“69 Many investigations have established that the network density of the jejunal and ileal interosseous plexus was dramatically reduced in GF mice compared to SPF animals, as well as the number of neurons in the interosseous ganglion, resulting in structural abnormalities of the jejunal and ileal…”
BackgroundGut-liver axis: Recent concepts in pathophysiology in alcohol-associated liver disease
Raya Tonetti, F., Eguileor, A., Mrdjen, M., Pathak, V., Travers, J., Nagy, L. E., & Llorente, C. (2024) · Hepatology · doi:10.1097/hep.0000000000000924 · Cited by 78 · see citing works
Antibiotics and the nervous system: More than just the microbes?
Champagne-Jorgensen, K., Kunze, W. A., Forsythe, P., Bienenstock, J., & McVey Neufeld, K.-A. (2019) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2018.12.014 · Cited by 92 · see citing works
Dairy probiotics: Beyond the role of promoting gut and immune health
Ζουμποπούλου, Γ., Pot, B., Tsakalidou, E., & Papadimitriou, K. (2016) · International Dairy Journal · doi:10.1016/j.idairyj.2016.09.010 · Cited by 70 · see citing works
Neuron–Glia Interaction in the Developing and Adult Enteric Nervous System
Pawolski, V., & Schmidt, M. H. H. (2020) · Cells · doi:10.3390/cells10010047 · Cited by 68 · see citing works
“Consequently, antibiotic treatments impaired glial homeostasis [77,78].”
Nerves in gastrointestinal cancer: from mechanism to modulations
Vaes, N., Idris, M., Boesmans, W., Alves, M. M., & Melotte, V. (2022) · Nature Reviews Gastroenterology & Hepatology · doi:10.1038/s41575-022-00669-9 · Cited by 68 · see citing works
Does the Gut Microbiota Influence Immunity and Inflammation in Multiple Sclerosis Pathophysiology?
Adamczyk-Sowa, M. H., Medrek, A., Madej, P., Michlicka, W., & Dobrakowski, P. P. (2017) · Journal of Immunology Research · doi:10.1155/2017/7904821 · Cited by 67 · see citing works
“[30] reported that the adult intestinal flora is mainly composed of four main clusters: Firmicutes, Bacteroidetes, Actinobacteria, andProteobacteria.”
BackgroundLuk, B., Horvath, T. D., Engevik, K. A., Ruan, W. H., Haidacher, S. J., Hoch, K. M., Oezguen, N., Spinler, J. K., Haag, A. M., Versalovic, J. A., et al. (2021) · Biomolecules · doi:10.3390/biom11081091 · Cited by 67 · see citing works
Parathan, P., Wang, Y., Leembruggen, A. J. L., Bornstein, J. C., & Foong, J. P. P. (2019) · Developmental Biology · doi:10.1016/j.ydbio.2019.10.011 · Cited by 64 · see citing works
Visceral Pain and Gastrointestinal Microbiome
Chichlowski, M., & Rudolph, C. (2015) · Journal of Neurogastroenterology and Motility · doi:10.5056/jnm15025 · Cited by 65 · see citing works
“The frequency and amplitude of muscle contractions also were fewer in GF mice.(29) GF mice also differ from conventional mice in the expression of brain-derived neurotrophic factor in the cor-”
Gut microbiota and neuropsychiatric disorders: Implications for neuroendocrine-immune regulation
Ge, T., Yao, X., Zhao, H., Yang, W., Zou, X., Peng, F., Li, B., & Cui, R. (2021) · Pharmacological Research · doi:10.1016/j.phrs.2021.105909 · Cited by 62 · see citing works
- Authors
- Collins, J., Borojevic, R., Verdu, E. F., Huizinga, J. D., & Ratcliffe, E. M.
- Affiliations
- McMaster University (CA)
- Corresponding author
- Ratcliffe, E. M.
- Venue
- Neurogastroenterology & Motility
- Publisher
- Wiley
- Published
- 2013-10-08
- Volume
- 26
- Issue
- 1
- Pages
- 98-107
- ISSN
- 1350-1925 (ISSN-L)
- 1365-2982
- OpenAlex
- W1976582565
- Cited by
- 318
- References
- 37
- Citations by year
- 2026: 17 · 2025: 19 · 2024: 28 · 2023: 18 · 2022: 34 · 2021: 43 · 2020: 31 · 2019: 21 · 2018: 28 · 2017: 20 · 2016: 30 · 2015: 15 · 2014: 12 · 2013: 1 · 2012: 1
- FWCI
- 18.23
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neurogastroenterology & Motility (publishedVersion)
- PubMed (publishedVersion)
- Funders
- McMaster University
- Topics
- Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
- Health Sciences › Medicine › Surgery › Congenital gastrointestinal and neural anomalies
- Keywords
- gut microbiota, enteric nervous system, postnatal development, germ-free mice, myenteric plexus, nitrergic neurons, intestinal motility, smooth muscle contraction, L-NNA, lidocaine, small intestine, gut-brain axis
- MeSH terms
- Animals, Animals, Newborn, Duodenum, Female, Gastrointestinal Motility, Ileum, Jejunum, Pregnancy, Enteric Nervous System, Mice, Microbiota
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