2019
Potentiated serotonin signaling in serotonin re‐uptake transporter knockout mice increases enterocyte mass and small intestinal absorptive function
Greig CJ, Zhang L, Cowles RA. Potentiated serotonin signaling in serotonin re‐uptake transporter knockout mice increases enterocyte mass and small intestinal absorptive function. Physiological Reports 2019, 7: e14278. PMID: 31724827, PMCID: PMC6854605, DOI: 10.14814/phy2.14278.Peer-Reviewed Original ResearchConceptsIntestinal absorptive functionEnterocyte massCrypt proliferation indexSmall intestineAbsorptive functionDistal bowelSmall bowelCrypt depthSERT knockoutVillus heightProliferative parametersSmall intestinal absorptive functionPlasma citrulline levelsCrypt cell proliferationPeptide absorptionSignificant increaseMucosal surface areaAttractive therapeutic targetFunctional intestinal mucosaWT miceCitrulline levelsPlasma citrullineSerotonin systemIntestinal mucosaLuminal instillationPotentiation of serotonin signaling leads to increased carbohydrate and lipid absorption in the murine small intestine
Park CJ, Armenia SJ, Shaughnessy MP, Greig CJ, Cowles RA. Potentiation of serotonin signaling leads to increased carbohydrate and lipid absorption in the murine small intestine. Journal Of Pediatric Surgery 2019, 54: 1245-1249. PMID: 30879746, DOI: 10.1016/j.jpedsurg.2019.02.027.Peer-Reviewed Original ResearchConceptsPotentiation of serotoninSmall intestineMucosal growthLipid absorptionSmall intestinal mucosal growthMucosal growth factorsSerotonin reuptake transporterSERT knockout miceDistal small intestineIntestinal mucosal growthCrypt cell proliferationT-testMucosal surface areaMurine small intestineStudent's t-testEnteric serotoninIntestinal failureIntestinal adaptationReuptake transporterDeficient miceWT animalsIntestinal homeostasisFatty acid analogueCrypt depthVillus height
2018
Potentiation of serotonin signaling protects against intestinal ischemia and reperfusion injury in mice
Tackett JJ, Gandotra N, Bamdad MC, Muise ED, Cowles RA. Potentiation of serotonin signaling protects against intestinal ischemia and reperfusion injury in mice. Neurogastroenterology & Motility 2018, 31: e13498. PMID: 30394002, DOI: 10.1111/nmo.13498.Peer-Reviewed Original ResearchConceptsSerotonin re-uptake transporterWild-type littermatesIntestinal ischemiaEnterocyte proliferationMucosal injurySuperior mesenteric artery occlusionPotentiation of serotoninMesenteric artery occlusionRe-uptake transporterChi-squared testEnteric serotoninSMA occlusionArtery occlusionR injuryReperfusion injuryEpithelial injuryMucosal protectionEnteroendocrine cellsGoblet cellsIschemiaInjurySSRIsMiceSerotoninCellular composition
2017
Muscarinic acetylcholine receptors participate in small intestinal mucosal homeostasis
Greig CJ, Cowles RA. Muscarinic acetylcholine receptors participate in small intestinal mucosal homeostasis. Journal Of Pediatric Surgery 2017, 52: 1031-1034. PMID: 28359586, DOI: 10.1016/j.jpedsurg.2017.03.037.Peer-Reviewed Original ResearchConceptsCrypt proliferation indexIntestinal mucosal homeostasisMuscarinic acetylcholine receptorsMucosal homeostasisIleal mucosaAcetylcholine receptorsDistal ileal segmentCholinergic nervous systemWild-type miceCrypt cell proliferationCrypt base stem cellsFunctional mucosaMAChR subtypesMuscarinic signalingIleal segmentCrypt depthProliferation indexNervous systemVillus heightMucosal morphometryMucosaHistologic sectionsMiceMouse linesEpithelial cell typesImproved capacity to evaluate changes in intestinal mucosal surface area using mathematical modeling
Greig CJ, Cowles RA. Improved capacity to evaluate changes in intestinal mucosal surface area using mathematical modeling. Microscopy Research And Technique 2017, 80: 793-798. PMID: 28295852, DOI: 10.1002/jemt.22866.Peer-Reviewed Original ResearchConceptsMucosal surface areaIntestinal mucosal surface areaVillus heightCrypt widthMucosal growthSelective serotonin reuptakeIntestinal mucosal growthEffects of interventionsFunctional intestinal mucosaEnhanced serotoninBowel diameterSerotonin reuptakeIntestinal mucosaMouse modelIleal sectionsTransporter moleculesMorphometric measuresComprehensive assessmentSSRIsMorphometric parametersMucosaSerotoninStandard measuresTherapyReuptake
2016
Enhanced serotonin signaling stimulates ordered intestinal mucosal growth
Tackett JJ, Gandotra N, Bamdad MC, Muise ED, Cowles RA. Enhanced serotonin signaling stimulates ordered intestinal mucosal growth. Journal Of Surgical Research 2016, 208: 198-203. PMID: 27993209, DOI: 10.1016/j.jss.2016.09.036.Peer-Reviewed Original ResearchEnhanced serotonin signaling increases intestinal neuroplasticity
Greig CJ, Gandotra N, Tackett JJ, Bamdad MC, Cowles RA. Enhanced serotonin signaling increases intestinal neuroplasticity. Journal Of Surgical Research 2016, 206: 151-158. PMID: 27916355, DOI: 10.1016/j.jss.2016.07.021.Peer-Reviewed Original ResearchConceptsSelective serotonin reuptake inhibitorsIntestinal mucosal growthSERT knockoutMucosal growthEnterocyte proliferationEnteric nervous systemSerotonin reuptake inhibitorsMassive bowel resectionSerotonin reuptake transporterAge-matched WTGAP-43 expressionWild-type miceSynthesis inhibitionMarkers of neuroplasticityImportant regulatorReversal of effectsEpithelial cell compartmentWestern blot analysisBowel resectionReuptake inhibitorsWT miceReuptake transporterMucosal homeostasisIntestinal segmentsCrypt depth
2012
Neuronal Serotonin Regulates Growth of the Intestinal Mucosa in Mice
Gross ER, Gershon MD, Margolis KG, Gertsberg ZV, Li Z, Cowles RA. Neuronal Serotonin Regulates Growth of the Intestinal Mucosa in Mice. Gastroenterology 2012, 143: 408-417.e2. PMID: 22609381, PMCID: PMC3687781, DOI: 10.1053/j.gastro.2012.05.007.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCholine O-AcetyltransferaseCholinergic NeuronsEnterochromaffin CellsIntestinal MucosaKetanserinMaleMiceMice, Inbred C57BLMice, KnockoutMuscarinic AntagonistsReceptor, Serotonin, 5-HT2AScopolamineSelective Serotonin Reuptake InhibitorsSerotonergic NeuronsSerotoninSerotonin AntagonistsSerotonin Plasma Membrane Transport ProteinsTryptophan HydroxylaseConceptsSelective serotonin re-uptake inhibitorsSerotonin re-uptake inhibitorsRe-uptake inhibitorsWild-type miceIntestinal mucosaSerotonin re-uptake transporterCholinergic submucosal neuronsIntestinal mucosal epitheliumRe-uptake transporterTryptophan hydroxylase 1Tryptophan hydroxylase 2Submucosal neuronsCholinergic neuronsCholine acetyltransferaseNeuronal serotoninMucosal growthMucosal epitheliumMucosal cellsSERT knockoutEpithelial proliferationAbstractTextMiceHydroxylase 2MucosaNeural precursors