Browsing by Author "Ellison, Peter"
Now showing items 1-20 of 44
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17-beta-Estradiol in relation to age at menarche and adult obesity in premenopausal women
Hjartaker, Anette; Ballard-Barbash, Rachel; Veierød, Marti B.; Emaus, Aina; Ellison, Peter; Thune, Inger; Furberg, Anne-Sofie; Espetvedt, Sissi; Jasienska, Grazyna (Oxford University Press, 2007)BACKGROUND: We hypothesize that premenopausal endogenous estradiol may be associated with age at menarche and adult overweight and obesity, potentially contributing to breast cancer risk. METHODS: We assessed age at menarche ... -
17β-Estradiol Levels During An Entire Menstrual Cycle In Response To Adult Stature and Insulin, Of Possible Importance For Breast Cancer Risk: The EBBA-I study.
Espetvedt, Sissi E.; Emaus, Aina; Tretli, Steinar; Jasienska, Grazyna; Ellison, Peter; Furberg, Anne-Sofie; Wist, Erik; Thune, Inger (American Association for Cancer Research, 2009)Background: The normal breast cells develop into malignant cells as a result of a complex interplay between genetic, environmental, nutritional and hormonal factors. Attained adult stature and insulin levels, risk factors ... -
The adolescent transition under energetic stress: Body composition tradeoffs among adolescent women in The Gambia
Reiches, Meredith W.; Moore, Sophie E.; Prentice, Andrew M.; Prentice, Ann; Sawo, Yankuba; Ellison, Peter T. (Oxford University Press, 2013)Background and objectives: Life history theory predicts a shift in energy allocation from growth to reproductive function as a consequence of puberty. During adolescence, linear growth tapers off and, in females, ovarian ... -
Adult Height, Insulin Levels and 17β-Estradiol in Young Women
Finstad, Sissi Espetvedt; Emaus, Aina; Tretli, Steinar; Jasienska, Grazyna; Ellison, Peter T.; Furberg, Anne-Sofie; Wist, Erik A.; Thune, Inger (American Association for Cancer Research, 2009)Background: Adult height and insulin levels have independently been associated with breast cancer risk. However, little is known about whether these factors influence estradiol levels. Thus, we hypothesize that adult ... -
Alcohol consumption, endogenous estrogen and mammographic density among premenopausal women
Frydenberg, Hanne; Flote, Vidar G.; Larsson, Ine M.; Barrett, Emily S.; Furberg, Anne-Sofie; Ursin, Giske; Wilsgaard, Tom; Ellison, Peter T.; McTiernan, Anne; Hjartåker, Anette; Jasienska, Grazyna; Thune, Inger (BioMed Central, 2015)Introduction: Alcohol consumption may promote aromatization of androgens to estrogens, which may partly explain the observations linking alcohol consumption to higher breast cancer risk. Whether alcohol consumption is ... -
Analyses Do Not Support CYP17 Genotype-Estradiol Associations--In Response
Jasienska, Grazyna; Ellison, Peter (American Association for Cancer Research, 2008)In Response: Vitzthum and Thornburg’s comments seem to reflect a basic misunderstanding of our paper and its results. As noted in the title of the article, we document an association between CYP17 genotypes and salivary ... -
Androgen Exposure and Sensation-Seeking in Young Males
Campbell, Bruce C.; Gray, Peter B.; Dreber, Anna; Apicella, Carmel; Little, A.; Ellison, Peter (John Wiley & Sons, 2008)Testosterone is thought to be associated with short attention spans, increased novelty, and thrill seeking and behavioral disinhibition in men. However, there is little empirical evidence for such associations among normal ... -
Androgen Receptor CAG Repeats and Body Composition Among Ariaal Men
Campbell, Benjamin C.; Gray, Peter B.; Eisenberg, Dan T. A.; Ellison, Peter; Sorenson, Michael D. (Blackwell Publishing, 2007)To determine the population variation in the androgen receptor (AR) and its association with body composition in a subsistence population, we sampled 87 settled and 65 nomadic males ages 20+ among the Ariaal of northern ... -
Beauty: In the gonads of the beholder — and the beheld
Ellison, Peter (Elsevier Science B.V., 2008) -
Body fat, energy balance and estradiol levels: a study based on hormonal profiles from complete menstrual cycles
Ziomkiewicz, Anna; Ellison, Peter; Lipson, Susan F.; Thune, Inger; Jasienska, Grazyna (Oxford University Press, 2008)BACKGROUND: Female fecundity is regulated by nutritional status. Although widely cited, this hypothesis is not strongly supported by empirical data from non-obese, healthy women of reproductive age. METHODS: Healthy, ... -
Comparison of Heart Rate Monitor and Accelerometer for Measuring Energy Expenditure Under Field Conditions
Reiches, Meredith W.; Sharrock, Katherine C.; Moore, S.; Prentice, Andrew M.; Ellison, Peter (John Wiley & Sons, 2009)Life history models predict differential energy allocation patterns among growth, maintenance, and reproduction under varying ecological conditions. The assessment of energy expenditure is one important tool in quantifying ... -
Cyclic endogenous estrogen and progesterone vary by mammographic density phenotypes in premenopausal women
Iversen, Anita; Frydenberg, Hanne; Furberg, Anne-Sofie; Flote, Vidar G.; Finstad, Sissi Espetvedt; McTiernan, Anne; Ursin, Giske; Wilsgaard, Tom; Ellison, Peter T.; Jasienska, Grazyna; Thune, Inger (Lippincott Williams & Wilkins, 2016)Estrogen and progesterone are key factors in the development of breast cancer, but it remains unclear whether these hormones are associated with mammographic density phenotypes in premenopausal women. We measured percent ... -
The Development of Sex Differences in Digital Formula from Infancy in the Fels Longitudinal Study
McIntyre, Matthew H.; Ellison, Peter T.; Lieberman, Daniel Eric; Demerath, Ellen; Towne, Bradford (Royal Society, The, 2005)Relative finger lengths, especially the second-to-fourth finger length ratio, have been proposed as useful markers for prenatal testosterone action. This claim partly depends on an association of relative finger lengths ... -
Developmental Plasticity in a Biocultural Context
Ellison, Peter (John Wiley & Sons, Ltd., 2009) -
Diurnal variation in salivary cortisol across age classes in Ache Amerindian males of Paraguay
Amir, Dorsa; Ellison, Peter T.; Hill, Kim R.; Bribiescas, Richard G. (Wiley-Blackwell, 2014)Objectives: Cortisol levels exhibit a diurnal rhythm in healthy men, with peaks in the morning and troughs in the evening. Throughout age, however, this rhythm tends to flatten. This diurnal flattening has been demonstrated ... -
Endocrinology, energetics, and human life history: A synthetic model
Ellison, Peter T. (Elsevier BV, 2017)Human life histories are shaped by the allocation of metabolic energy to competing physiological domains. A model framework of the pathways of energy allocation is described and hormonal regulators of allocation along the ... -
Energetics, Reproductive Ecology, and Human Evolution
Ellison, Peter (Paleoanthropology Society / University of Pennsylvania Museum of Archaeology and Anthropology, 2008)Human reproductive ecology is a relatively new subfield of human evolutionary biology focusing on the responsiveness of the human reproductive system to ecological variables. Many of the advances in human, and more recently ... -
Energy Pooling and Implications for the Unique Traits of the Human Life History Strategy
Sharrock, Katherine C.; Reiches, Meredith W.; Lipson, Susan F.; Kramer, Karen L.; Ellison, Peter (John Wiley & Sons, 2009)Compared to non-human primates, human life history is characterized by slow juvenile growth, late age at maturity, short interbirth intervals, and a decoupling of reproductive senescence and somatic senescence. Some of ... -
A factor analysis approach to examining relationships among ovarian steroid concentrations, gonadotrophin concentrations and menstrual cycle length characteristics in healthy, cycling women
Barrett, E. S.; Thune, I.; Lipson, Susan Fay; Furberg, A.- S.; Ellison, Peter T. (Oxford University Press (OUP), 2013)STUDY QUESTION: How are ovarian steroid concentrations, gonadotrophins and menstrual cycle characteristics inter-related within normal menstrual cycles? SUMMARY ANSWER: Within cycles, measures of estradiol production ... -
Female Adolescent Energy Expenditure in the Gambia
Reiches, Meredith Wayden (2013-02-25)Adolescence is a life history transition of individual and evolutionary importance: the body begins to allocate energy available above maintenance costs away from somatic growth and towards reproductive function. This study ...