Associations between biological markers of prenatal stress and infant negative emotionality are specific to sex
Open accessAbstract
PURPOSE: Fetal programming is the idea that environmental stimuli can alter the development of the fetus, which may have a long-term effect on the child. We have recently reported that maternal prenatal cortisol predicts infant negative emotionality in a sex-dependent manner: high prenatal cortisol was associated with increased negative emotionality in females, and decreased negative emotionality in males. This study aims to test for this sex-specific effect in a different cohort, and investigate whether sex differences in fetal programming may be specific to glucocorticoid mechanisms by also examining a maternal salivary alpha-amylase (sAA) by sex interaction. METHODS: 88 pregnant women (mean gestational age=27.4 weeks, SD=7.4) collected saliva samples at home over two working days to be assayed for the hormone cortisol (range=0.13-88.22nmol/l) and the enzyme alpha-amylase (range=4.57-554.8units/ml). Samples were collected at waking, 30-min post-waking and 12h post-waking. Two months after birth participants reported infant negative emotionality using the distress to limits subscale of the Infant Behavior Questionnaire. RESULTS: The interaction between maternal prenatal cortisol and infant sex to predict distress to limits approached significance (p=0.067). In line with our previous finding there was a positive association between prenatal cortisol and negative emotionality in females, and a negative association in males. The interaction between sAA and sex to predict distress was significant (p=0.025), and the direction of effect was the same as for the cortisol data; high sAA associated with increased negative emotionality in females and reduced negative emotionality in males. CONCLUSIONS: In line with our previous findings, this research adds to an emerging body of literature, which suggests that fetal programming mechanisms may be sex-dependent. This is the first study to demonstrate that maternal prenatal sAA may be an important biomarker for infant behavior, and the findings have implications for understanding sex differences in developmental psychopathology.
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Maternal stress, as measured by sAA, has been associated with negative emotionality in females but not male offspring.
“Maternal stress, as measured by sAA, has also been associated with negative emotionality in females but not male offspring [124].”
From Stress and the HPA Axis: Balancing Homeostasis and Fertility. (2017) · cites this paper as [124]
The Results section reports a positive association between prenatal sAA and infant distress in females, but it was not statistically significant in the main analysis. The claim’s “but not male” qualifier is not supported: the same section reports an association in the opposite direction for males, significant in an exploratory analysis of sAA measured 30 minutes after waking. No page number is available in our copy. (LLM, conf=0.88)
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Cites
Antenatal maternal stress and long‐term effects on child neurodevelopment: how and why?
Talge, N. M., Neal, C., Glover, V., & the Early Stress, T. R. A. P. S. N. F. A. N. E. O. C. A. A. M. H. (2007) · Journal of Child Psychology and Psychiatry · doi:10.1111/j.1469-7610.2006.01714.x · Cited by 1,349 · see citing works
Maternal antenatal anxiety and children's behavioural/emotional problems at 4 years
O'Connor, T. G., Heron, J., Golding, J., Beveridge, M., & Glover, V. (2002) · British Journal of Psychiatry · doi:10.1192/bjp.180.6.502 · Cited by 1,070 · see citing works
Lemaire, V., Koehl, M., Le Moal, M., & Abrous, D. N. (2000) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.97.20.11032 · Cited by 1,044 · cited 2× · see citing works
“The animal literature has consistently supported this hypothesis (Barbazanges et al., 1996; Koehl et al., 1999; Lemaire et al., 2000; Maccari et al., 1995), however human studies have been less consistent.”
Pearson, R. M., Evans, J., Kounali, D., Lewis, G., Heron, J., Ramchandani, P. G., O’Connor, T. G., & Stein, A. (2013) · JAMA Psychiatry · doi:10.1001/jamapsychiatry.2013.2163 · Cited by 589 · see citing works
Self-citationTeixeira, J. M. A., Fisk, N. M., & Glover, V. (1999) · BMJ · doi:10.1136/bmj.318.7177.153 · Cited by 526 · see citing works
McCormick, C. M., Smythe, J. W., Sharma, S., & Meaney, M. J. (1995) · Developmental Brain Research · doi:10.1016/0165-3806(94)00153-q · Cited by 471 · see citing works
Van den Bergh, B. R. H., Van Calster, B., Smits, T., Van Huffel, S., & Lagae, L. (2008) · Neuropsychopharmacology · doi:10.1038/sj.npp.1301450 · Cited by 434 · see citing works
Maternal prenatal depressive symptoms predict infant<i>NR3C1</i>1F and<i>BDNF</i>IV DNA methylation
Braithwaite, E., Kundakovic, M., Ramchandani, P., Murphy, S., & Champagne, F. (2015) · Epigenetics · doi:10.1080/15592294.2015.1039221 · Cited by 299 · see citing works
Self-citationCalkins, S. D., Dedmon, S. E., Gill, K. L., Lomax, L. E., & Johnson, L. M. (2002) · Infancy · doi:10.1207/s15327078in0302_4 · Cited by 244 · see citing works
Kivlighan, K. T., DiPietro, J. A., Costigan, K. A., & Laudenslager, M. L. (2008) · Psychoneuroendocrinology · doi:10.1016/j.psyneuen.2008.06.008 · Cited by 176 · see citing works
Maternal trait anxiety, emotional distress, and salivary cortisol in pregnancy
Pluess, M., Bolten, M., Pirke, K.-M., & Hellhammer, D. (2010) · Biological Psychology · doi:10.1016/j.biopsycho.2009.12.005 · Cited by 104 · see citing works
Stress and placental resistance measured by doppler ultrasound in early and mid-pregnancy
Harville, E. W., Savitz, D. A., Dole, N., Herring, A. H., Thorp, J. M., & Light, K. C. (2008) · Ultrasound in Obstetrics & Gynecology · doi:10.1002/uog.5344 · Cited by 41 · see citing works
Flagged first, then by citations
Research works printed but not linked: 66
- Baibazarova E. van de Beek C. Cohen-Kettenis P.T. Buitelaar J. Shelton K.H. van Goozen S.H. Influence of prenatal maternal stress, maternal plasma cortisol and cortisol in the amniotic fluid on birth outcomes and child temperament at 3 months Psychoneuroendocrinology 38 2013 907 915 23046825
- Bangasser D.A. Curtis A. Reyes B.A. Bethea T.T. Parastatidis I. Ischiropoulos H. Van Bockstaele E.J. Valentino R.J. Sex differences in corticotropin-releasing factor receptor signalling and trafficking: potential role in female vulnerability to stress-related psychopathology Mol. Psychiatr. 15 2010 896 904 PMC2935505 20548297
- Barbazanges A. Piazza P.V. Le Moal M. Maccari S. Maternal glucocorticoid secretion mediates long-term effects of prenatal stress J. Neurosci. 16 1996 3943 3949 8656288 PMC6578602
- Bosch J.A. Brand H.S. Ligtenberg T.J. Bermond B. Hoogstraten J. Nieuw Amerongen A.V. Psychological stress as a determinant of protein levels and salivary-induced aggregation of Streptococcus gordonii in human whole saliva Psychosom. Med. 58 1996 374 382 8827800
- Braithwaite E.C. Murphy S.E. Ramchandani P.G. Prenatal risk factors for depression: a critical review of the evidence and potential mechanisms J. Dev. Orig. Health Dis. 2014 1 12 25081923
- Braithwaite E.C. Ramchandani P.G. Lane T.A. Murphy S.E. Symptoms of prenatal depression are associated with raised salivary alpha-amylase levels Psychoneuroendocrinology 60 2015 163 172 26150358
- Braithwaite E.C. Murphy S.E. Ramchandani P.G. Effects of prenatal depressive symptoms on maternal and infant cortisol reactivity Arch. Womens Ment. Health 19 2016 581 590 26940835 PMC4963445
- Braithwaite E.C. Pickles A. Sharp H. Glover V. O’Donnell K. Tibu F. Hill J. Maternal prenatal cortsiol predicts infant negative emotionality in a sex-dependent manner Physiol. Behav. 2017 PMC5429387 28322912
- Buss C. Davis E.P. Shahbaba B. Pruessner J.C. Head K. Sandman C.A. Maternal cortisol over the course of pregnancy and subsequent child amygdala and hippocampus volumes and affective problems Proc. Natl. Acad. Sci. U. S. A. 109 2012 E1312 1319 22529357 PMC3356611
- Chatterton R.T. Vogelsong K.M. Lu Y.-c. Hudgens G.A. Hormonal responses to psychological stress in men preparing for skydiving J. Clin. Endocrinol. Metab. 82 1997 2503 2509 9253325
- Class Q.A. Lichtenstein P. Langstrom N. D’Onofrio B.M. Timing of prenatal maternal exposure to severe life events and adverse pregnancy outcomes: a population study of 2.6 million pregnancies Psychosom. Med. 73 2011 234 241 21321257 PMC3070756
- Costello E.J. Worthman C. Erkanli A. Angold A. Prediction from low birth weight to female adolescent depression: a test of competing hypotheses Arch. Gen. Psychiatry 64 2007 338 344 17339522
- Cox J.L. Holden J.M. Sagovsky R. Detection of postnatal depression. development of the 10-item edinburgh postnatal depression scale Brit. J. Psychiatry 150 1987 782 786 3651732
- Crockenberg S.C. Leerkes E.M. Barrig Jo P.S. Predicting aggressive behavior in the third year from infant reactivity and regulation as moderated by maternal behavior Dev. Psychopathol. 20 2008 37 54 18211727
- Davis E.P. Sandman C.A. The timing of prenatal exposure to maternal cortisol and psychosocial stress is associated with human infant cognitive development Child Dev. 81 2010 131 148 20331658 PMC2846100
- Davis E.P. Glynn L.M. Schetter C.D. Hobel C. Chicz-Demet A. Sandman C.A. Prenatal exposure to maternal depression and cortisol influences infant temperament J. Am. Acad. Child Adolesc. Psychiatry 46 2007 737 746 17513986
- Degnan K.A. Calkins S.D. Keane S.P. Hill-Soderlund A.L. Profiles of disruptive behavior across early childhood: contributions of frustration reactivity, physiological regulation, and maternal behavior Child Dev. 79 2008 1357 1376 18826530 PMC2823572
- Eisenberg N. Fabes R.A. Murphy B. Maszk P. Smith M. Karbon M. The role of emotionality and regulation in children's social functioning: a longitudinal study Child Dev. 66 1995 1360 1384 7555221
- Entringer S. Buss C. Andersen J. Chicz-DeMet A. Wadhwa P.D. Ecological momentary assessment of maternal cortisol profiles over a multiple-day period predicts the length of human gestation Psychosom. Med. 73 2011 469 474 21700714 PMC3137948
- Frick P.J. White S.F. Research review: the importance of callous-unemotional traits for developmental models of aggressive and antisocial behavior J. Child Psychol. Psychiatry 49 2008 359 375 18221345
- Frye C.A. Wawrzycki J. Effect of prenatal stress and gonadal hormone condition on depressive behaviors of female and male rats Horm. Behav. 44 2003 319 326 14613726
- Giannakoulopoulos X. Teixeira J. Fisk N. Glover V. Human fetal and maternal noradrenaline responses to invasive procedures Pediatr. Res. 45 1999 494 499 10203140
- Giesbrecht G.F. Campbell T. Letourneau N. Kooistra L. Kaplan B. Psychological distress and salivary cortisol covary within persons during pregnancy Psychoneuroendocrinology 37 2012 270 279 21752548
- Giesbrecht G.F. Granger D.A. Campbell T. Kaplan B. Team A.P.S. Salivary alpha-amylase during pregnancy: diurnal course and associations with obstetric history, maternal demographics, and mood Dev. Psychobiol. 55 2013 156 167 22315130
- Glover V. Hill J. Sex differences in the programming effects of prenatal stress on psychopathology and stress responses: an evolutionary perspective Physiol. Behav. 106 2012 736 740 22353310
- Goedhart G. Vrijkotte T.G. Roseboom T.J. van der Wal M.F. Cuijpers P. Bonsel G.J. Maternal cortisol and offspring birthweight: results from a large prospective cohort study Psychoneuroendocrinology 35 2010 644 652 19889503
- Gutteling B. Weerth C. Willemsen-Swinkels S.N. Huizink A. Mulder E.J.H. Visser G.A. Buitelaar J. The effects of prenatal stress on temperament and problem behavior of 27-month-old toddlers Eur. Child Adolesc. Psychiatry 14 2005 41 51 15756515
- Gutteling B.M. de Weerth C. Buitelaar J.K. Prenatal stress and children's cortisol reaction to the first day of school Psychoneuroendocrinology 30 2005 541 549 15808923
- Harville E.W. Savitz D.A. Dole N. Herring A.H. Thorp J.M. Light K.C. Patterns of salivary cortisol secretion in pregnancy and implications for assessment protocols Biol. Psychol. 74 2007 85 91 16979811
- Hellgren C. Åkerud H. Skalkidou A. Sundström-Poromaa I. Cortisol awakening response in late pregnancy in women with previous or ongoing depression Psychoneuroendocrinology 38 2013 3150 3154 24041544
- Hinnant J.B. El-Sheikh M. Codevelopment of externalizing and internalizing symptoms in middle to late childhood: sex, baseline respiratory sinus arrhythmia, and respiratory sinus arrhythmia reactivity as predictors Dev. Psychopathol. 25 2013 419 436 23627954 PMC3874140
- Ishitobi Y. Akiyoshi J. Tanaka Y. Ando T. Okamoto S. Kanehisa M. Kohno K. Ninomiya T. Maruyama Y. Tsuru J. Elevated salivary α-amylase and cortisol levels in unremitted and remitted depressed patients Int. J. Psychiatry Clin. Pract. 14 2010 268 273 24917438
- Kent A. Hughes P. Ormerod L. Jones G. Thilaganathan B. Uterine artery resistance and anxiety in the second trimester of pregnancy Ultrasound Obstet. Gynecol. 19 2002 177 179 11876811
- Koehl M. Darnaudery M. Dulluc J. Van Reeth O. Le Moal M. Maccari S. Prenatal stress alters circadian activity of hypothalamo-pituitary-adrenal axis and hippocampal corticosteroid receptors in adult rats of both gender J. Neurobiol. 40 1999 302 315 10440731
- Li J. Olsen J. Vestergaard M. Obel C. Attention-deficit/hyperactivity disorder in the offspring following prenatal maternal bereavement: a nationwide follow-up study in Denmark Eur. Child Adolesc. Psychiatry 19 2010 747 753 20495989
- Maccari S. Piazza P.V. Kabbaj M. Barbazanges A. Simon H. Le Moal M. Adoption reverses the long-term impairment in glucocorticoid feedback induced by prenatal stress J. Neurosci. 15 1995 110 116 7823121 PMC6578279
- Mendelson T. DiPietro J.A. Costigan K.A. Chen P. Henderson J.L. Associations of maternal psychological factors with umbilical and uterine blood flow J. Psychosom. Obstet. Gynaecol. 32 2011 3 9 21219117 PMC3719408
- Moffitt T.E. Caspi A. Rutter M. Silva P. Sex Differences in Antisocial Behaviour Conduct Disorder, Delinquency, and Violence in the Dunedin Longitudinal Study 2001 Cambridge University Press
- Monk C. Newport D.J. Korotkin J.H. Long Q. Knight B. Stowe Z.N. Uterine blood flow in a psychiatric population: impact of maternal depression, anxiety, and psychotropic medication Biol. Psychiatry 72 2012 483 490 22695184 PMC3424380
- Morales S. Beekman C. Blandon A.Y. Stifter C.A. Buss K.A. Longitudinal associations between temperament and socioemotional outcomes in young children: the moderating role of RSA and gender Dev. Psychobiol. 57 2015 105 119 25399505 PMC4431540
- Morsing E. Asard M. Ley D. Stjernqvist K. Marsal K. Cognitive function after intrauterine growth restriction and very preterm birth Pediatrics 127 2011 e874 882 21382944
- Murphy S.E. Braithwaite E.C. Hubbard I. Williams K. Tindall E. Holmes E. Ramchandani P.G. Salivary cortisol response to infant distress in pregnant women with symptoms of depression Arch. Women Mental Health 18 2014 247 253 PMC4516861 25352317
- O’Connor T.G. Heron J. Golding J. Glover V. Team A.S. Maternal antenatal anxiety and behavioural/emotional problems in children: a test of a programming hypothesis J. Child Psychol. Psychiatry 44 2003 1025 1036 14531585
- O’Connor T.G. Tang W. Gilchrist M.A. Moynihan J.A. Pressman E.K. Blackmore E.R. Diurnal cortisol patterns and psychiatric symptoms in pregnancy: short-term longitudinal study Biol. Psychol. 2013 PMC5788168 24239618
- Obel C. Hedegaard M. Henriksen T.B. Secher N.J. Olsen J. Levine S. Stress and salivary cortisol during pregnancy Psychoneuroendocrinology 30 2005 647 656 15854781
- Quarini C. Pearson R.M. Stein A. Ramchandani P.G. Lewis G. Evans J. Are female children more vulnerable to the long-term effects of maternal depression during pregnancy? J. Affect. Disord. 189 2016 329 335 26469300 PMC4650986
- Rodriguez A. Bohlin G. Are maternal smoking and stress during pregnancy related to ADHD symptoms in children? J. Child Psychol. Psychiatry 46 2005 246 254 15755301
- Sandman C.A. Glynn L.M. Davis E.P. Is there a viability-vulnerability tradeoff? Sex differences in fetal programming J. Psychosom. Res. 75 2013 327 335 24119938 PMC3796732
- Sarkar P. Bergman K. O’Connor T.G. Glover V. Maternal antenatal anxiety and amniotic fluid cortisol and testosterone: possible implications for foetal programming J. Neuroendocrinol. 20 2008 489 496 18266948
- Schulz K.M. Pearson J.N. Neeley E.W. Berger R. Leonard S. Adams C.E. Stevens K.E. Maternal stress during pregnancy causes sex-specific alterations in offspring memory performance, social interactions, indices of anxiety, and body mass Physiol. Behav. 104 2011 340 347 21334352 PMC4420621
- Sharp H. Hill J. Hellier J. Pickles A. Maternal antenatal anxiety, postnatal stroking and emotional problems in children: outcomes predicted from pre- and postnatal programming hypotheses Psychol. Med. 45 2015 269 283 25068652 PMC4301199
- Shnider S.M. Wright R.G. Levinson G. Roizen M.F. Wallis K.L. Rolbin S.H. Craft J.B. Uterine blood flow and plasma norepinephrine changes during maternal stress in the pregnant ewe Anesthesiology 50 1979 524 527 453577
- Sjostrom K. Valentin L. Thelin T. Marsal K. Maternal anxiety in late pregnancy and fetal hemodynamics Eur. J. Obstet. Gynecol. Reprod. Biol. 74 1997 149 155 9306108
- Skosnik P.D. Chatterton R.T. Jr. Swisher T. Park S. Modulation of attentional inhibition by norepinephrine and cortisol after psychological stress Int. J. Psychophysiol. 36 2000 59 68 10700623
- Stevens A.D. Lumbers E.R. Effects of intravenous infusions of noradrenaline into the pregnant ewe on uterine blood flow, fetal renal function, and lung liquid flow Can. J. Physiol. Pharmacol. 73 1995 202 208 7621357
- Stifter C.A. Spinrad T.L. Braungart-Rieker J.M. Toward a developmental model of child compliance: the role of emotion regulation in infancy Child Dev. 70 1999 21 32 10191513
- Szuran T.F. Pliska V. Pokorny J. Welzl H. Prenatal stress in rats: effects on plasma corticosterone, hippocampal glucocorticoid receptors, and maze performance Physiol. Behav. 71 2000 353 362 11150568
- Tanaka Y. Ishitobi Y. Maruyama Y. Kawano A. Ando T. Okamoto S. Kanehisa M. Higuma H. Ninomiya T. Tsuru J. Salivary alpha-amylase and cortisol responsiveness following electrical stimulation stress in major depressive disorder patients Prog. Neuropsychopharmacol. Biol. Psychiatry 36 2012 220 224 22063648
- Tibu F. Hill J. Sharp H. Marshall K. Glover V. Pickles A. Evidence for sex differences in fetal programming of physiological stress reactivity in infancy Dev. Psychopathol. 26 2014 879 888 24703466
- Van Lieshout R.J. Boylan K. Increased depressive symptoms in female but not male adolescents born at low birth weight in the offspring of a national cohort Can. J. Psychiatry 55 2010 422 430 20704769
- Veen G. Giltay E.J. Licht C.M. Vreeburg S.A. Cobbaert C.M. Penninx B.W. Zitman F.G. Evening salivary alpha-amylase, major depressive disorder, and antidepressant use in the Netherlands Study of Depression and Anxiety (NESDA) Psychiatry Res. 208 2013 41 46 23587658
- Vidal-Ribas P. Pickles A. Tibu F. Sharp H. Hill J. Sex differences in the association between vagal reactivity and oppositional defiant disorder symptoms J. Child Psychol. Psychiatry 58 2017 988 997 28573761 PMC5575540
- Weinstock M. Matlina E. Maor G.I. Rosen H. McEwen B.S. Prenatal stress selectively alters the reactivity of the hypothalamic-pituitary adrenal system in the female rat Brain Res. 595 1992 195 200 1467966
- Weinstock M. Sex-dependent changes induced by prenatal stress in cortisol and hippocampal morphology and behaviour in rats: an update Stress 14 2011 604 613 21790452
- Zagron G. Weinstock M. Maternal adrenal hormone secretion mediates behavioural alterations induced by prenatal stress in male and female rats Behav. Brain Res. 175 2006 323 328 17023059
- Zhu P. Tao F. Hao J. Sun Y. Jiang X. Prenatal life events stress: implications for preterm birth and infant birthweight Am. J. Obstet. Gynecol. 203 34 2010 e31 e38 20417475
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Stress and the HPA Axis: Balancing Homeostasis and Fertility.
Joseph, D., & Whirledge, S. (2017) · International journal of molecular sciences · doi:10.3390/ijms18102224 · Cited by 290 · see citing works
“Maternal stress, as measured by sAA, has also been associated with negative emotionality in females but not male offspring [124].”
Background
- Authors
- Braithwaite, E. C., Murphy, S. E., Ramchandani, P. G., & Hill, J.
- Affiliations
- University of Oxford (GB)
- Warneford Hospital (GB)
- Imperial College London (GB)
- University of Reading (GB)
- Corresponding author
- Braithwaite, Elizabeth C.
- Venue
- Psychoneuroendocrinology
- Publisher
- Elsevier BV
- Published
- 2017-12
- Volume
- 86
- Pages
- 1-7
- ISSN
- 0306-4530 (ISSN-L)
- PMC
- PMC5667634
- OpenAlex
- W2751511388
- Cited by
- 46
- References
- 12
- Citations by year
- 2025: 3 · 2024: 1 · 2023: 10 · 2022: 2 · 2021: 6 · 2020: 7 · 2019: 8 · 2018: 7 · 2017: 2
- FWCI
- 3.57
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Psychoneuroendocrinology (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- e-space (Manchester Metropolitan University) (acceptedVersion)
- CentAUR (University of Reading) (acceptedVersion)
- Staffordshire Online Repository (Staffordshire University) (acceptedVersion)
- Figshare (submittedVersion, cc-by)
- Spiral (Imperial College London) (submittedVersion, other-oa)
- Funders
- Medical Research Council Studentship (MR/J500501/1)
- Topics
- Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Maternal Mental Health During Pregnancy and Postpartum
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Birth, Development, and Health
- Keywords
- prenatal stress, fetal programming, salivary amylase, infant negative emotionality, sex differences, infant distress, maternal biomarkers, developmental psychopathology
- MeSH terms
- Adult, Depression, Emotions, Female, Fetus, Glucocorticoids, Humans, Hydrocortisone, Infant, Male, Mothers, Pregnancy, Pregnancy Complications, Prenatal Exposure Delayed Effects, Surveys and Questionnaires, Saliva, Sex Characteristics, Stress, Psychological, Cohort Studies, Biomarkers, Infant Behavior, Fetal Development, Salivary alpha-Amylases
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