2023
Review of the role of the endogenous opioid and melanocortin systems in the restless legs syndrome
Walters A, Li Y, Koo B, Ondo W, Weinstock L, Champion D, Afrin L, Karroum E, Bagai K, Spruyt K. Review of the role of the endogenous opioid and melanocortin systems in the restless legs syndrome. Brain 2023, 147: 26-38. PMID: 37633259, PMCID: PMC10796165, DOI: 10.1093/brain/awad283.Peer-Reviewed Original ResearchConceptsRestless legs syndromeMu-opioid receptorsRLS patientsEndogenous opioidsLegs syndromeOpioid receptorsSerum ironΒ-endorphinMelanocortin systemIdiopathic restless legs syndromeRLS-like symptomsPeriodic limb movementsLow serum ironWild-type miceSensory changesMelanocyte stimulating hormoneReceptor blockersSerum ferritinAutopsy studyStriatal dopamineAdrenocorticotropic hormoneStimulating hormoneDopaminergic systemMouse modelTherapeutic efficacy
2019
0670 Sleep-Related Event Physiologic Timing for Triggering Nonsustained Ventricular Tachycardia: A Case-crossover Analysis
May A, May R, Bena J, Wang L, Monahan K, Stone K, Barrett-Connor E, Koo B, Winkelman J, Redline S, Mittleman M, Mehra R. 0670 Sleep-Related Event Physiologic Timing for Triggering Nonsustained Ventricular Tachycardia: A Case-crossover Analysis. Sleep 2019, 42: a267-a268. DOI: 10.1093/sleep/zsz067.668.Peer-Reviewed Original ResearchRespiratory eventsSleep-related eventsHazard periodOsteoporotic fracturesOdds ratioBidirectional case-crossover designPeriodic limb movementsRespiratory-related arousalsConditional logistic regressionCase-crossover analysisCase-crossover designPhysiologic timingVentricular tachycardiaNSVTNSVT episodesPhysiologic effectsPLMSOlder menStudy participantsMan studyLogistic regressionLimb movementsSleepControl periodConfidence intervals
2018
Restless legs syndrome and periodic limb movements during sleep in the Multi-Ethnic Study of Atherosclerosis
Doan TT, Koo BB, Ogilvie RP, Redline S, Lutsey PL. Restless legs syndrome and periodic limb movements during sleep in the Multi-Ethnic Study of Atherosclerosis. Sleep 2018, 41: zsy106. PMID: 29860522, PMCID: PMC6093310, DOI: 10.1093/sleep/zsy106.Peer-Reviewed Original ResearchConceptsRestless legs syndromePrevalence of RLSConcurrent restless legs syndromePeriodic limb movementsMulti-Ethnic StudyLegs syndromeObesity statusOdds of RLSLimb movementsPrevalence of PLMSCommunity-based sampleRace/ethnicityRLS symptomsClinical criteriaAdjusted modelPLMSStudy participantsPrevalenceOlder individualsCross-sectional dataAtherosclerosisSexSyndromeWhite participantsSleep1015 Frequent Periodic Limb Movements During Sleep and Risk of Incident Stroke
May A, Koo B, Yaffe K, Leng Y, Cawthon P, Redline S, Stone K, Mehra R. 1015 Frequent Periodic Limb Movements During Sleep and Risk of Incident Stroke. Sleep 2018, 41: a376-a377. DOI: 10.1093/sleep/zsy061.1014.Peer-Reviewed Original ResearchBody mass indexIncident stroke riskPeriodic limb movementsStroke riskIncident strokeMulti-center prospective studyLimb movementsApnea-hypopnea indexAF findingsHypopnea indexMedian ageMedication useTotal cholesterolMass indexSleep apneaArousal indexProspective studyAutonomic dysregulationPhysical activityPLMSSignificant interactionStrokeLogistic regressionAlcohol useAge
2017
Polysomnographic phenotypes and their cardiovascular implications in obstructive sleep apnoea
Zinchuk AV, Jeon S, Koo BB, Yan X, Bravata DM, Qin L, Selim BJ, Strohl KP, Redeker NS, Concato J, Yaggi HK. Polysomnographic phenotypes and their cardiovascular implications in obstructive sleep apnoea. Thorax 2017, 73: 472. PMID: 28935698, PMCID: PMC6693344, DOI: 10.1136/thoraxjnl-2017-210431.Peer-Reviewed Original ResearchMeSH KeywordsAcute Coronary SyndromeAgedCardiovascular DiseasesCluster AnalysisCross-Sectional StudiesFemaleHumansIschemic Attack, TransientLongitudinal StudiesMaleMiddle AgedMortalityPhenotypePolysomnographyProportional Hazards ModelsRisk AssessmentSeverity of Illness IndexSleep Apnea, ObstructiveStrokeConceptsObstructive sleep apnoeaCardiovascular outcomesPolysomnographic featuresSleep apnoeaPolysomnographic dataIncident transient ischemic attackUS Veteran cohortTransient ischemic attackAcute coronary syndromeAdverse cardiovascular outcomesPeriodic limb movementsOSA severity classificationPolysomnographic phenotypeCoronary syndromeIschemic attackCardiovascular implicationsOSA phenotypesOSA evaluationPathophysiological domainsPoor sleepMild/Patient clustersVeteran cohortSurvival analysisCombined outcome0720 ASSOCIATION OF INDIVIDUAL PERIODIC LIMB MOVEMENTS AND NON-SUSTAINED TACHYCARDIA DURING SLEEP: A CASE-CROSSOVER ANALYSIS
May A, May R, Bena J, Wang L, Monahan K, Stone K, Cawthon P, Barrett-Connor E, Koo B, Winkelman J, Redline S, Mittleman M, Mehra R. 0720 ASSOCIATION OF INDIVIDUAL PERIODIC LIMB MOVEMENTS AND NON-SUSTAINED TACHYCARDIA DURING SLEEP: A CASE-CROSSOVER ANALYSIS. Sleep 2017, 40: a266-a267. DOI: 10.1093/sleepj/zsx050.719.Peer-Reviewed Original ResearchPeriodic limb movementsRespiratory eventsOsteoporotic fracturesUnadjusted analysesNational InstituteSympathetic nervous system activationBidirectional case-crossover designLimb movementsControl periodNon-sustained tachycardiaApnea-hypopnea indexNervous system activationConditional logistic regressionVentricular tachycardia eventsCase-crossover analysisCase-crossover designAdvancing Translational SciencesPLMS indexBlood InstituteNational HeartTachycardia eventsVentricular arrhythmogenesisOdds ratioAncillary studiesNSVT
2016
Restless Legs Syndrome and Depression: Effect Mediation by Disturbed Sleep and Periodic Limb Movements
Koo BB, Blackwell T, Lee HB, Stone KL, Louis ED, Redline S, Group O. Restless Legs Syndrome and Depression: Effect Mediation by Disturbed Sleep and Periodic Limb Movements. American Journal Of Geriatric Psychiatry 2016, 24: 1105-1116. PMID: 27526989, PMCID: PMC5241001, DOI: 10.1016/j.jagp.2016.04.003.Peer-Reviewed Original ResearchConceptsSevere restless legs syndromeRestless legs syndromePeriodic limb movementsDepressive symptomsLegs syndromeSleep disturbancesMild restless legs syndromeFurther adjustmentAssociation of RLSLimb movementsCardiovascular risk factorsApnea-hypopnea indexBody mass indexPotential mediatorsCross-sectional analysisEffect sizeDopaminergic medicationMass indexOsteoporotic fracturesPLMS indexDisturbed sleepRisk factorsGDS scoresPhysical activitySleep efficiencyThe Restless Legs Syndrome - Depression Relationship: Effect Mediation by Disturbed Sleep and Periodic Limb Movements (P1.149)
Koo B, Blackwell T, Lee H, Stone K, Louis E, Redline S. The Restless Legs Syndrome - Depression Relationship: Effect Mediation by Disturbed Sleep and Periodic Limb Movements (P1.149). Neurology 2016, 86 DOI: 10.1212/wnl.86.16_supplement.p1.149.Peer-Reviewed Original Research
2015
Restless Legs Syndrome: Would You Like That with Movements or Without?
Koo B. Restless Legs Syndrome: Would You Like That with Movements or Without? Tremor And Other Hyperkinetic Movements 2015, 5: 316. DOI: 10.5334/tohm.280.Peer-Reviewed Original ResearchRestless legs syndromeDiagnosis of RLSRLS diagnosisPeriodic limb movementsSupplementary diagnostic criterionRLS sufferersLegs syndromeSubjective symptomsSleep disturbancesDiagnostic criteriaMotor phenomenaProper diagnosisPatients' descriptionsSensorimotor conditionsPLMSDiagnosisLimb movementsInvestigational levelsPathophysiologySyndromeSymptomsEpidemiologySleepPharmacology
2014
Periodic Limb Movements During Sleep and Prevalent Hypertension in the Multi-Ethnic Study of Atherosclerosis
Koo BB, Sillau S, Dean DA, Lutsey PL, Redline S. Periodic Limb Movements During Sleep and Prevalent Hypertension in the Multi-Ethnic Study of Atherosclerosis. Hypertension 2014, 65: 70-77. PMID: 25287399, PMCID: PMC4268086, DOI: 10.1161/hypertensionaha.114.04193.Peer-Reviewed Original ResearchConceptsSystolic blood pressurePLMS-arousal indexPeriodic limb movementsPrevalent hypertensionBlood pressureOverall cohortPLMS indexArousal indexObserved systolic blood pressureLimb movementsCardiovascular risk factorsBlood pressure outcomesApnea-hypopnea indexCommunity-dwelling menBody mass indexType/doseMulti-Ethnic StudyRace/ethnicityAntihypertensive medicationsPLMS frequencyDiastolic BPMass indexPressure outcomesRisk factorsSBP values
2011
Association of Incident Cardiovascular Disease With Periodic Limb Movements During Sleep in Older Men
Koo BB, Blackwell T, Ancoli-Israel S, Stone KL, Stefanick ML, Redline S, Group F. Association of Incident Cardiovascular Disease With Periodic Limb Movements During Sleep in Older Men. Circulation 2011, 124: 1223-1231. PMID: 21859975, PMCID: PMC3265562, DOI: 10.1161/circulationaha.111.038968.Peer-Reviewed Original ResearchConceptsCause cardiovascular diseaseCoronary heart diseasePeripheral arterial diseaseIncident cardiovascular diseasePeriodic limb movementsArterial diseaseCardiovascular diseaseCerebrovascular diseaseHeart diseasePLMS frequencyRelative hazardCommunity-dwelling elderly menConventional cardiovascular risk factorsPeripheral arterial disease eventsLimb movementsElderly male cohortCardiovascular risk factorsBody mass indexProportional hazards regressionRisk of incidentPrevalent hypertensionCardiovascular riskMass indexStudy cohortHazards regression