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 correlationReplicability of leptin associations with testosterone, estradiol, follicle‐stimulating hormone, and luteinizing hormone in healthy Ache men of Paraguay: A multiple daily assessment
Harries V, Bribiescas R. Replicability of leptin associations with testosterone, estradiol, follicle‐stimulating hormone, and luteinizing hormone in healthy Ache men of Paraguay: A multiple daily assessment. American Journal Of Human Biology 2021, 34: e23638. PMID: 34213036, DOI: 10.1002/ajhb.23638.Peer-Reviewed Original ResearchConceptsFollicle-stimulating hormoneLeptin's associationsMale reproductive hormone levelsSerum follicle-stimulating hormoneMale reproductive hormonesReproductive hormone levelsMultiple daily assessmentsLeptin levelsEstradiol levelsHealthy menHormone levelsReproductive hormonesLeptinSeparate daysTestosteroneDaily assessmentHormoneSmall sample sizeAche menSalivary testosteroneMenLifestyle variationsSpan of daysEstradiolLHLow 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
The 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
2014
Diurnal variation in salivary cortisol across age classes in Ache Amerindian males of Paraguay
Amir D, Ellison P, Hill K, Bribiescas R. Diurnal variation in salivary cortisol across age classes in Ache Amerindian males of Paraguay. American Journal Of Human Biology 2014, 27: 344-348. PMID: 25327695, DOI: 10.1002/ajhb.22645.Peer-Reviewed Original Research
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 studiesAge related variation of salivary testosterone values in healthy Japanese males
Uchida A, Bribiescas R, Ellison P, Kanamori M, Ando J, Hirose N, Ono Y. Age related variation of salivary testosterone values in healthy Japanese males. The Aging Male 2006, 9: 207-213. PMID: 17178556, DOI: 10.1080/13685530601060461.Peer-Reviewed Original Research
2005
Testosterone‐mediated immune functions and male life histories
Muehlenbein M, Bribiescas R. Testosterone‐mediated immune functions and male life histories. American Journal Of Human Biology 2005, 17: 527-558. PMID: 16136532, DOI: 10.1002/ajhb.20419.Peer-Reviewed Original ResearchConceptsMale life historyLife historyLife-history evolutionPrimate malesLife history theoryPotential selection pressuresHistory evolutionPhysiological ecologyReproductive effortNon-primate speciesSelection pressureEnergy allocation processHistory theoryHuman life history theoryMetabolic functionsEnergetic resourcesEvolutionary anthropologyImmune-endocrine interactionsPrimary hormoneNew insightsImportant forcePhysiological systemsVertebratesRecent advancesImmune function
2004
Rapid changes in chimpanzee (Pan troglodytes) urinary cortisol excretion
Anestis S, Bribiescas R. Rapid changes in chimpanzee (Pan troglodytes) urinary cortisol excretion. Hormones And Behavior 2004, 45: 209-213. PMID: 15047016, DOI: 10.1016/j.yhbeh.2003.09.015.Peer-Reviewed Original Research
2002
Population variation in age-related decline in male salivary testosterone
Ellison P, Bribiescas R, Bentley G, Campbell B, Lipson S, Panter-Brick C, Hill K. Population variation in age-related decline in male salivary testosterone. Human Reproduction 2002, 17: 3251-3253. PMID: 12456632, DOI: 10.1093/humrep/17.12.3251.Peer-Reviewed Original Research
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 ResearchReproductive ecology and life history of the human male
Bribiescas R. Reproductive ecology and life history of the human male. American Journal Of Biological Anthropology 2001, 116: 148-176. PMID: 11786994, DOI: 10.1002/ajpa.10025.Peer-Reviewed Original ResearchConceptsMale life historyReproductive ecologyLife historyReproductive effortDevelopmental canalizationReproductive constraintsSomatic tissuesPopulation variationRole of competitionInsemination abilityMammalian malesMate choosinessEcologyPhysiological mechanismsMale senescenceHuman malesPotential constraintsIntegrative interpretationChoosinessSurvivorshipSenescenceCanalizationRecent investigationsMale contraceptiveEvolution