2024
The milk study protocol: A longitudinal, prospective cohort study of the relationship between human milk metabolic hormone concentration, maternal body composition, and early growth and satiety development in Samoan infants aged 1–4 months
Harries V, Abraham J, Vesi L, Reupena A, Faaselele-Savusa K, Duckham R, Bribiescas R, Hawley N. The milk study protocol: A longitudinal, prospective cohort study of the relationship between human milk metabolic hormone concentration, maternal body composition, and early growth and satiety development in Samoan infants aged 1–4 months. PLOS ONE 2024, 19: e0292997. PMID: 38728264, PMCID: PMC11086876, DOI: 10.1371/journal.pone.0292997.Peer-Reviewed Original ResearchConceptsMaternal body compositionEarly infant growthBody compositionInfant growthProspective longitudinal cohortMother-infant dyadsBreastfeeding mother-infant dyadsHuman milkFingerpick blood sampleInfants aged 1Longitudinal cohortBody composition measurementsProspective cohort studyInfant feeding patternsSatiety developmentUndernourished womenSatiety responsivenessInfant satietyInfant hungerHormone leptinCohort studyHigh-income settingsMultivariate analysisEating patternsHormone transfer
2021
C‐reactive protein in adult Samoans: Population variation and physiological correlates
Rivara AC, Corley M, Choy CC, Duckham RL, Pomer A, Reupena MS, Viali S, Naseri T, Kershaw EE, Crouter SE, McGarvey ST, Bribiescas RG, Valeggia C, Hawley NL. C‐reactive protein in adult Samoans: Population variation and physiological correlates. American Journal Of Human Biology 2021, 34: e23646. PMID: 34260111, PMCID: PMC8758804, DOI: 10.1002/ajhb.23646.Peer-Reviewed Original ResearchConceptsC-reactive proteinBody mass indexCardiometabolic disease riskMeasures of adiposityAdult SamoansCRP correlateDisease riskSerum C-reactive proteinMeasures of BMICardiometabolic risk markersPercent body fatSex-dependent associationsCardiometabolic markersCardiometabolic riskCRP quartileMass indexUnadjusted analysesRisk markersBody fatKruskal-Wallis testAdiposityPacific Islander populationsSpearman rank correlationFirst examinationRank correlationLow prevalence of anemia among Shuar communities of Amazonian Ecuador
DeLouize A, Liebert M, Madimenos F, Urlacher S, Schrock J, Cepon‐Robins T, Gildner T, Blackwell A, Harrington C, Amir D, Bribiescas R, Snodgrass J, Sugiyama L. Low prevalence of anemia among Shuar communities of Amazonian Ecuador. American Journal Of Human Biology 2021, 34: e23590. PMID: 33749068, DOI: 10.1002/ajhb.23590.Peer-Reviewed Original ResearchConceptsAnemia prevalenceBody mass indexImportant global health challengeGlobal health challengeAnemia preventionHemoglobin levelsMass indexAnemia ratesLow prevalenceRisk populationsAdult menAdult womenHealth challengesPrevalenceAnemiaAmerican indigenous populationsShuar of EcuadorSouth American indigenous populationsTotal sampleIndigenous populationsPopulation
2020
Accelerated senescence as a cost of reproduction: Testing associations between oxidative stress and reproductive effort in rural and urban women
Sancilio A, Jasienska G, Panter‐Brick C, Ziomkiewicz A, Nenko I, Bribiescas RG. Accelerated senescence as a cost of reproduction: Testing associations between oxidative stress and reproductive effort in rural and urban women. American Journal Of Human Biology 2020, 33: e23537. PMID: 33190335, PMCID: PMC8843032, DOI: 10.1002/ajhb.23537.Peer-Reviewed Original ResearchThe Developmental Origins of Risk and Time Preferences Across Diverse Societies
Amir D, Jordan MR, McAuliffe K, Valeggia CR, Sugiyama LS, Bribiescas RG, Snodgrass JJ, Dunham Y. The Developmental Origins of Risk and Time Preferences Across Diverse Societies. Journal Of Experimental Psychology General 2020, 149: 650-661. PMID: 31512902, DOI: 10.1037/xge0000675.Peer-Reviewed Original Research
2019
Soil‐transmitted helminth infection and intestinal inflammation among the Shuar of Amazonian Ecuador
Cepon‐Robins T, Gildner T, Schrock J, Eick G, Bedbury A, Liebert M, Urlacher S, Madimenos F, Harrington C, Amir D, Bribiescas R, Sugiyama L, Snodgrass J. Soil‐transmitted helminth infection and intestinal inflammation among the Shuar of Amazonian Ecuador. American Journal Of Biological Anthropology 2019, 170: 65-74. PMID: 31260090, DOI: 10.1002/ajpa.23897.Peer-Reviewed Original ResearchConceptsSoil-transmitted helminthsIntestinal inflammationImmune system developmentSTH exposureSTH infectionsSpecies of STHFC levelsSoil-transmitted helminth infectionsElevated intestinal inflammationIntestinal inflammatory responseAnti-inflammatory pathwayLow FC levelsInfection intensityHuman immune systemUninfected childrenFecal calprotectinRole of exposureInflammatory responseStool samplesTrichuris trichiuraT. trichiuraHelminth infectionsLifestyle changesInflammationImmune system
2013
Oxytocin and Epstein‐Barr virus: Stress biomarkers in the postpartum period among first‐time mothers from São Paulo, Brazil
Rudzik A, Breakey A, Bribiescas R. Oxytocin and Epstein‐Barr virus: Stress biomarkers in the postpartum period among first‐time mothers from São Paulo, Brazil. American Journal Of Human Biology 2013, 26: 43-50. PMID: 24265252, DOI: 10.1002/ajhb.22489.Peer-Reviewed Original ResearchConceptsFirst-time mothersUnplanned pregnancyEBV AbOT levelsSelf-reported stress levelsEpstein-Barr virus (EBV) antibody levelsVirus antibody levelsEpstein-Barr virusBreast milk samplesBlood spot samplesAntibody levelsWeeks postpartumPostpartum periodPregnancyEffective biomarkersSatisfaction scoresNew mothersStress biomarkersPSS scoresOxytocinSpot samplesBiomarkersMothersPositive associationStressful experiencesRelationships between biomarkers of inflammation, ovarian steroids, and age at menarche in a rural polish sample
Clancy K, Klein L, Ziomkiewicz A, Nenko I, Jasienska G, Bribiescas R. Relationships between biomarkers of inflammation, ovarian steroids, and age at menarche in a rural polish sample. American Journal Of Human Biology 2013, 25: 389-398. PMID: 23606228, DOI: 10.1002/ajhb.22386.Peer-Reviewed Original ResearchConceptsBiomarkers of inflammationMenstrual cycleLowest CRP tertileOvarian hormone concentrationsAge of menarcheHigh CRPOvarian suppressionCRP tertileTiming of menarcheOvarian hormonesOvarian steroidsOvarian functionInverse associationLow progesteroneHormone concentrationsStrong negative predictorSalivary progesteroneRecall methodInflammatory sensitivityCRPMenarcheInflammationImmune challengeEstradiolNegative predictor
2010
Is group size related to longevity in mammals?
Kamilar J, Bribiescas R, Bradley B. Is group size related to longevity in mammals? Biology Letters 2010, 6: 736-739. PMID: 20462887, PMCID: PMC3001368, DOI: 10.1098/rsbl.2010.0348.Peer-Reviewed Original ResearchConceptsMaximum longevityPhylogenetic comparative methodsCorrelate of longevityLife history theoryLower predation riskGroup sizeEvolutionary timeSpecies longevityExtrinsic mortalityLow basal metabolic rateOpen habitatsMammal speciesPredation riskLarger speciesGroup size effectShort lifespanSpeciesMammalsBasal metabolic rateSignificant group size effectLongevityMetabolic rateBody massHabitatsPredation
2006
Age, rank, and personality effects on the cortisol sedation stress response in young chimpanzees
Anestis S, Bribiescas R, Hasselschwert D. Age, rank, and personality effects on the cortisol sedation stress response in young chimpanzees. Physiology & Behavior 2006, 89: 287-294. PMID: 16887152, DOI: 10.1016/j.physbeh.2006.06.010.Peer-Reviewed Original ResearchConceptsCortisol responseIndividual differencesPersonality effectsBaseline cortisolAge differencesYoung chimpanzeesAdolescent chimpanzeesPsychosocial stressorsStyle scoresRank-related differencesSedation measuresStress measuresCortisol changesStyle componentsHigher baseline levelsOlder individualsGreater stress responseIndividualsCortisol levelsYoung individualsPersonalityChimpanzeesMeasuresStress responseFuture studies
2001
Serum leptin levels and anthropometric correlates in Ache Amerindians of eastern Paraguay
Bribiescas R. Serum leptin levels and anthropometric correlates in Ache Amerindians of eastern Paraguay. American Journal Of Biological Anthropology 2001, 115: 297-303. PMID: 11471127, DOI: 10.1002/ajpa.1085.Peer-Reviewed Original Research