2025
Enhanced paracrine action of FGF21 in stromal cells delays thymic aging
Youm Y, Gliniak C, Zhang Y, Dlugos T, Scherer P, Dixit V. Enhanced paracrine action of FGF21 in stromal cells delays thymic aging. Nature Aging 2025, 1-12. PMID: 39972172, DOI: 10.1038/s43587-025-00813-5.Peer-Reviewed Original ResearchThymic epithelial cellsThymic agingNaive CD8 T cellsCD8 T cellsAge-related thymic involutionT cell diversityThymic functionImmune dysfunctionThymic stromaT cellsThymic lymphopoiesisThymic involutionActions of FGF21Immune agingAged miceStromal cellsEpithelial cellsAged animalsCo-receptorHepatic overexpressionElevation of FGF21FGF21AgeCellsAdipocytes
2024
Modelling adult neurogenesis in the aging rodent hippocampus: a midlife crisis
Arellano J, Rakic P. Modelling adult neurogenesis in the aging rodent hippocampus: a midlife crisis. Frontiers In Neuroscience 2024, 18: 1416460. PMID: 38887368, PMCID: PMC11181911, DOI: 10.3389/fnins.2024.1416460.Peer-Reviewed Original ResearchAdult neurogenesisHippocampal functionAdult hippocampal neurogenesisAged animalsMiddle aged animalsHippocampal neurogenesisGranule cellsDentate gyrusMature granule cellsRodent hippocampusMidlife crisisNeurogenesisFunctional relevanceRodentsDramatically with ageNeuronsYoung animalsOlder animalsGyrusHippocampusRatsRobust neurogenesisHippocampalMeta-analysisDentateImmunological and microbial shifts in the aging rhesus macaque lung during nontuberculous mycobacterial infection
Cinco I, Napier E, Rhoades N, Davies M, Allison D, Kohama S, Bermudez L, Winthrop K, Fuss C, Spindel E, Messaoudi I. Immunological and microbial shifts in the aging rhesus macaque lung during nontuberculous mycobacterial infection. MBio 2024, 15: e00829-24. PMID: 38771046, PMCID: PMC11237422, DOI: 10.1128/mbio.00829-24.Peer-Reviewed Original ResearchConceptsNTM pulmonary diseaseIncreased disease severityNontuberculous mycobacteriaDisease severityBacterial DNAAged animalsAntigen-specific T cellsPulmonary diseaseAssociated with increased disease severityDysregulated macrophage responsePersistence of bacterial DNALack of animal modelsRhesus macaquesSingle-cell RNA sequencingNontuberculous mycobacterial infectionsImmune cell infiltrationRhesus macaque modelBacterial loadAged rhesus macaquesTesting novel therapeuticsRight caudal lobeLower respiratory microbiomeYears of ageMAH infectionMicrobial communities
2022
Ultimate tensile strength and biaxial stress–strain responses of aortic tissues—A clinical-engineering correlation
Dong H, Liu M, Lou X, Leshnower B, Sun W, Ziganshin B, Zafar M, Elefteriades J. Ultimate tensile strength and biaxial stress–strain responses of aortic tissues—A clinical-engineering correlation. Applications In Engineering Science 2022, 10: 100101. DOI: 10.1016/j.apples.2022.100101.Peer-Reviewed Original ResearchThoracic aortic dissectionAortic dissectionAortic tissueDissection eventsBicuspid aortic valveUnderlying genetic abnormalitiesHuman aortic tissueHypertensive episodesAortic arch morphologyAortic valveAdvanced ageTissue injuryConnective tissue ingrowthAged animalsAortic wallInciting factorsGenetic abnormalitiesClinical contextArch morphologyDissectionDissected tissuesTissueResponseTissue ingrowthInjuryFunctional, transcriptional, and microbial shifts associated with healthy pulmonary aging in rhesus macaques
Rhoades N, Davies M, Lewis S, Cinco I, Kohama S, Bermudez L, Winthrop K, Fuss C, Mattison J, Spindel E, Messaoudi I. Functional, transcriptional, and microbial shifts associated with healthy pulmonary aging in rhesus macaques. Cell Reports 2022, 39: 110725. PMID: 35443183, PMCID: PMC9096119, DOI: 10.1016/j.celrep.2022.110725.Peer-Reviewed Original ResearchConceptsT cellsCD8<sup>+</sup> T cellsCD8<sup>+</sup> TRhesus macaque modelPulmonary function testsSevere respiratory infectionsSeverity of respiratory diseasePulmonary ageCross-sectional studyMacaque modelInfiltrating macrophagesImmunological landscapeRespiratory infectionsImpact of ageComprehensive cross-sectional studyIncreased riskAge-related changesFunction testsAged animalsIncreased prevalenceHealthy humansRespiratory tractRhesus macaquesConsequence of agingLungThe Stroke Preclinical Assessment Network: Rationale, Design, Feasibility, and Stage 1 Results
Lyden PD, Bosetti F, Diniz MA, Rogatko A, Koenig JI, Lamb J, Nagarkatti KA, Cabeen RP, Hess DC, Kamat PK, Khan MB, Wood K, Dhandapani K, Arbab AS, Leira EC, Chauhan AK, Dhanesha N, Patel RB, Kumskova M, Thedens D, Morais A, Imai T, Qin T, Ayata C, Boisserand LSB, Herman AL, Beatty HE, Velazquez SE, Diaz-Perez S, Sanganahalli BG, Mihailovic JM, Hyder F, Sansing LH, Koehler RC, Lannon S, Shi Y, Karuppagounder SS, Bibic A, Akhter K, Aronowski J, McCullough LD, Chauhan A, Goh A, Siddiqui S, Sheth K, Matouk C, Cruz C, Zhou J, Dawson V, Dawson T, Liang J, van Zijl P, Zeiler S, Taylor Kimberly W, Erdogan T, Yu L, Mandeville J, Whittier J. The Stroke Preclinical Assessment Network: Rationale, Design, Feasibility, and Stage 1 Results. Stroke 2022, 53: 1802-1812. PMID: 35354299, PMCID: PMC9038686, DOI: 10.1161/strokeaha.121.038047.Peer-Reviewed Original ResearchConceptsPreclinical assessmentStroke treatmentCandidate treatmentMiddle cerebral artery occlusion (MCAO) surgeryClinical stroke trialsSuccessful stroke treatmentInclusion/exclusion criteriaStroke clinical trialsClinical trial designYoung male animalsComorbid diseasesOcclusion surgeryCerebral ischemiaNeurological disabilityComorbid conditionsStroke trialsProtocol adherenceBlinded assessmentSuch therapyClinical trialsClinical studiesExclusion criteriaTrial designAged animalsOutcome assessment
2020
Aging protects rat cortical slices against to oxygen-glucose deprivation induced damage
Gul Z, Demircan C, Bagdas D, Buyukuysal RL. Aging protects rat cortical slices against to oxygen-glucose deprivation induced damage. International Journal Of Neuroscience 2020, 130: 1183-1191. PMID: 32064981, DOI: 10.1080/00207454.2020.1730830.Peer-Reviewed Original ResearchConceptsOxygen-glucose deprivationCortical slicesRat cortical slicesMale Sprague-DawleyAged male ratsOGD mediumS100B levelsLactate dehydrogenase leakageCerebral cortexControl conditionYoung slicesMale ratsSprague-DawleyAged animalsBrain regionsBrain tissueReoxygenationMore increaseStaining intensityDehydrogenase leakagePossible involvementMinutes incubationRatsPresent studySimilar decline
2018
Age-Related Expression of Human AT1R Variants and Associated Renal Dysfunction in Transgenic Mice
Jain S, Rana A, Jain K, Perla SK, Puri N, Kumar A. Age-Related Expression of Human AT1R Variants and Associated Renal Dysfunction in Transgenic Mice. American Journal Of Hypertension 2018, 31: 1234-1242. PMID: 30084918, PMCID: PMC6454504, DOI: 10.1093/ajh/hpy121.Peer-Reviewed Original ResearchConceptsTranscriptional regulationHap-IISingle nucleotide polymorphismsBlood pressureVivo ChIP assaysNucleotide polymorphismsTranscription factor USF2Strong transcriptional activityTg miceRenal disordersType I geneAged animalsHaplotype-dependent mannerTransgenic miceTranscriptional environmentI geneChIP assaysTranscriptional activityAssociated renal dysfunctionHigh blood pressurePro-inflammatory markersGenesPhysiological relevanceAge-related expressionAntioxidant defenseReducing protein oxidation reverses lung fibrosis
Anathy V, Lahue KG, Chapman DG, Chia SB, Casey DT, Aboushousha R, van der Velden JLJ, Elko E, Hoffman SM, McMillan DH, Jones JT, Nolin JD, Abdalla S, Schneider R, Seward DJ, Roberson EC, Liptak MD, Cousins ME, Butnor KJ, Taatjes DJ, Budd RC, Irvin CG, Ho YS, Hakem R, Brown KK, Matsui R, Bachschmid MM, Gomez JL, Kaminski N, van der Vliet A, Janssen-Heininger YMW. Reducing protein oxidation reverses lung fibrosis. Nature Medicine 2018, 24: 1128-1135. PMID: 29988126, PMCID: PMC6204256, DOI: 10.1038/s41591-018-0090-y.Peer-Reviewed Original ResearchConceptsIdiopathic pulmonary fibrosisPulmonary fibrosisLung fibrosisDirect administrationAirways of miceGrowth factor beta 1Transgenic mouse modelFibrotic lungsLung tissueMouse modelAged animalsFibrosisLung epitheliumTherapeutic potentialExcessive depositionBeta 1Transgenic overexpressionOxidative stressExact mechanismAirwayGlrxLungMiceAdministrationOxidative mechanisms
2017
Adipocyte Accumulation in the Bone Marrow during Obesity and Aging Impairs Stem Cell-Based Hematopoietic and Bone Regeneration
Ambrosi T, Scialdone A, Graja A, Gohlke S, Jank A, Bocian C, Woelk L, Fan H, Logan D, Schürmann A, Saraiva L, Schulz T. Adipocyte Accumulation in the Bone Marrow during Obesity and Aging Impairs Stem Cell-Based Hematopoietic and Bone Regeneration. Cell Stem Cell 2017, 20: 771-784.e6. PMID: 28330582, PMCID: PMC5459794, DOI: 10.1016/j.stem.2017.02.009.Peer-Reviewed Original ResearchConceptsStem cell-basedHematopoietic regenerationAdipocyte accumulationStem cell-like characteristicsCell-like characteristicsBone resident cellsDipeptidyl peptidase-4Bone marrow cavityCompetitive repopulationLethal irradiationHematopoietic nicheBone marrowCell-basedPeptidase-4Osteogenic lineageAged animalsBone healingDiabetes therapyAdipocyte lineageBoneMarrow cavityAge-dependentMolecular identityObesityAdipogenic lineages
2006
Impaired Trace and Contextual Fear Conditioning in Aged Rats
Moyer JR, Brown TH. Impaired Trace and Contextual Fear Conditioning in Aged Rats. Behavioral Neuroscience 2006, 120: 612-624. PMID: 16768613, DOI: 10.1037/0735-7044.120.3.612.Peer-Reviewed Original ResearchConceptsContextual fear conditioningFear conditioningTrace fear conditioningLong interstimulus intervalsContext conditioningConditioning deficitsTrace conditioningTraining contextFear paradigmRobust conditioningTrace intervalPerirhinal cortexInterstimulus intervalAged ratsConditioningDeficitsAged Sprague-Dawley ratsAged animalsStimuliCortexParadigmAdultsFunctional changesToneHippocampus
2004
The Effect of Aging on the Skeletal Response to Intermittent Treatment with Parathyroid Hormone
Knopp E, Troiano N, Bouxsein M, Sun BH, Lostritto K, Gundberg C, Dziura J, Insogna K. The Effect of Aging on the Skeletal Response to Intermittent Treatment with Parathyroid Hormone. Endocrinology 2004, 146: 1983-1990. PMID: 15618351, DOI: 10.1210/en.2004-0770.Peer-Reviewed Original ResearchConceptsBody bone mineral densitySkeletal responseAged animalsIntermittent treatmentTotal body bone mineral densityYoung adult C57BL/6 miceDaily sc injectionsVehicle-treated animalsTrabecular bone volume fractionYoung adult miceBone mineral densityYoung adult animalsVertebral histomorphometryEffect of ageBone volume fractionParathyroid hormoneC57BL/6 miceSC injectionPTH treatmentMineral densityBody weightOsteoblast numberPTHCultured marrowYounger counterpartsAge‐associated synapse elimination in mouse parasympathetic ganglia
Coggan JS, Grutzendler J, Bishop DL, Cook MR, Gan W, Heym J, Lichtman JW. Age‐associated synapse elimination in mouse parasympathetic ganglia. Developmental Neurobiology 2004, 60: 214-226. PMID: 15266652, DOI: 10.1002/neu.20022.Peer-Reviewed Original ResearchConceptsSynapse eliminationExcitatory postsynaptic potential amplitudeSubmandibular ganglion neuronsPostsynaptic potential amplitudeNumber of synapsesMonths of ageMammalian nervous systemAge-related changesMiniature EPSPsSMG neuronsSynapse efficacyParasympathetic gangliaGanglion neuronsEPSP amplitudeSynaptic contactsSynaptic transmissionSynaptic inputsAged animalsPotential amplitudeNervous systemSynaptic boutonsAxonal processesNeuronsOld animalsPostsynaptic membrane
1998
The α-2a noradrenergic agonist, guanfacine, improves delayed response performance in young adult rhesus monkeys
Franowicz JS, Arnsten A. The α-2a noradrenergic agonist, guanfacine, improves delayed response performance in young adult rhesus monkeys. Psychopharmacology 1998, 136: 8-14. PMID: 9537677, DOI: 10.1007/s002130050533.Peer-Reviewed Original ResearchConceptsYoung adult rhesus monkeysAdult rhesus monkeysHigh dosesDorsolateral prefrontal cortical functionRhesus monkeysDose of idazoxanEffects of guanfacinePrefrontal cortical functionAntagonist idazoxanNoradrenergic agonistsCatecholamine depletionMild sedationAdrenergic agonistsCortical functionDrug effectsAged animalsGuanfacineAdrenergic receptorsLow dosesAged monkeysEffective doseIntact animalsIdazoxanDosesYoung animals
1993
Postsynaptic alpha-2 receptor stimulation improves memory in aged monkeys: Indirect effects of yohimbine versus direct effects of clonidine
Arnsten A, Cai JX. Postsynaptic alpha-2 receptor stimulation improves memory in aged monkeys: Indirect effects of yohimbine versus direct effects of clonidine. Neurobiology Of Aging 1993, 14: 597-603. PMID: 7905189, DOI: 10.1016/0197-4580(93)90044-c.Peer-Reviewed Original ResearchConceptsPostsynaptic alpha-2 adrenoceptorsPostsynaptic alpha-2 receptorsAlpha-2 adrenoceptorsAlpha 2 receptorsAged monkeysAged animalsAlpha-2 receptor stimulationAlpha-2 adrenergic antagonistBeneficial effectsAlpha-2 antagonistAlpha-2 agonistsCognitive-enhancing effectsNE systemClonidine actsNE releaseAdrenergic antagonistsYohimbine treatmentReceptor stimulationLow dosesClonidineYohimbineNorepinephrineBeneficial dosesYoung monkeysMonkeys
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