Abstract
The early life of most mammals is spent in close contact with the mother, and for the neonate, early maternal separation is a traumatic event that, depending on various conditions, may shape its behavioral and neurochemical phenotype in adulthood. Studies on rodents demonstrated that a very brief separation followed by increased maternal care may positively affect the development of the offspring but that prolonged separation causes significant amounts of stress. The consequences of this stress (particularly the hyperreactivity of the HPA (hypothalamic–pituitary–adrenal) axis are expressed in adulthood and persist for life. Maternal separation in rodents, particularly rats, was used as a model for various psychotic conditions, especially depression. The most popular separation procedure of a 3-h daily separation from the second to the 12th postpartum day yields a depression model of high construct and predictive validity. The results of studies on maternal separation in rats and monkeys prompt a discussion of the consequences of traditional procedures in the maternity wards of developed countries where attention is focused on the hygiene of the neonates and not on their psychological needs. This alternate focus results in a drastic limitation of mother-infant contact and prolonged periods of separation. It is tempting to speculate that differences in the course and severity of various mental disorders, which are usually less prevalent in underdeveloped countries than in developed countries (as noted by Kraepelin), may be related to different modes of infant care. Only recently has so-called kangaroo mother care (establishing mother-infant skin-to-skin contact immediately after birth) become popular in developed countries. In addition to its instant benefits for the neonates, this procedure may also be beneficial for the mental health of the offspring in adulthood.
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Alberts JR: Huddling by rat pups: ontogeny of individual and group behavior. Dev Psychobiol, 2007, 49, 22–32.
Andrews MM, Boyle JS: Transcultural concepts in nursing care, 5th edn., Kluwer/Lippincott, Williams, and Wilkins, Philadelphia, 2008, 487 pp.
Anisman H, Zaharia MD, Meaney MJ, Merali Z: Do early-life events permanently alter behavioral and hormonal responses to stressors? Int J Dev Neurosci, 1998, 16, 149–164.
Arborelius L, Eklund MB: Both long and brief maternal separation produces persistent changes in tissue levels of brain monoamines in middle-aged female rats. Neuroscience, 2007, 145, 738–750.
Arborelius L, Hawks BW, Owens MJ, Plotsky PM, Nemeroff CB: Increased responsiveness of presumed 5-HT cells to citalopram in adult rats subjected to prolonged maternal separation relative to brief separation. Psychopharmacology (Berl), 2004, 176, 248–255.
Archer J: Rodent sex differences in emotional and related behavior. Behav Biol, 1975, 14, 451–479.
Bailoo JD, Jordan RL, Garza XJ, Tyler AN: Brief and long periods of maternal separation affect maternal behavior and offspring behavioral development in C57BL/6 mice. Dev Psychobiol, 2013 Jun 15. doi: https://doi.org/10.1002/dev.21135. [Epub ahead of print].
Barnett SA, Burn J: Early stimulation and maternal behaviour. Nature, 1967, 213, 150–152.
Bebbington PE, Bhugra D, Brugha T, Singleton N, Farrell M, Jenkins R, Lewis G, Meltzer H: Psychosis, victimisation and childhood disadvantage: evidence from the second British National Survey of Psychiatric Morbidity. Br J Psychiatry, 2004, 185, 220–226.
Belzung C, Lemoine M: Criteria of validity for animal models of psychiatric disorders: focus on anxiety disorders and depression. Biol Mood Anxiety Disord, 2011, 1, 9.
Bengoetxea H, Ortuzar N, Bulnes S, Rico-Barrio I, Lafuente JV, Argandoña EG: Enriched and deprived sensory experience induces structural changes and rewires connectivity during the postnatal development of the brain. Neural Plast, 2012, 2012, 305693.
Biagini G, Pich EM, Carani C, Marrama P, Agnati LF: Postnatal maternal separation during the stress hypore-sponsive period enhances the adrenocortical response to novelty in adult rats by affecting feedback regulation in the CA1 hippocampal field. Int J Dev Neurosci, 1998, 16, 187–197.
Braun K, Lange E, Metzger M, Poeggel G: Maternal separation followed by early social deprivation affects the development of monoaminergic fiber systems in the medial prefrontal cortex of Octodon degus. Neuroscience, 2000, 95, 309–318.
Bryer JB, Nelson BA, Miller JB, Krol PA: Childhood sexual and physical abuse as factors in adult psychiatric illness. Am J Psychiatry, 1987, 144, 1426–1430.
Bystrova K, Ivanova V, Edhborg M, Matthiesen AS, Ransjö-Arvidson AB, Mukhamedrakhimov R, Kerstin Uvnäs-Moberg, Widstrm AM: Early contact versus separation: Effects on mother–infant interaction one year later. Birth, 2009, 36, 97–109.
Caldji C, Francis D, Sharma S, Plotsky PM, Meaney MJ: The effects of early rearing environment on the development of GABAA and central benzodiazepine receptor levels and novelty-induced fearfulness in the rat. Neu-ropsychopharmacology, 2000, 22, 219–229.
Calhoun JB: The ecology and sociology of the Norway rat. H.E.W. Public Health Service, Bethesda, 1962.
Charpak N, Ruiz JG, Zupan J, Cattaneo A, Figueroa Z, Tessier R, Cristo M et al.: Kangaroo Mother Care: 25 years after. Acta Paediatr, 2005, 94, 514–522.
Conde-Agudelo A, Belizán JM, Diaz-Rossello J: Kangaroo mother care to reduce morbidity and mortality in low birthweight infants. Cochrane Database Syst Rev, 2011, doi: https://doi.org/10.1002/14651858.CD002771.pub2.
Cotella EM, Mestres Lascano I, Franchioni L, Levin GM, Suárez MM: Long-term effects of maternal separation on chronic stress response suppressed by amitriptyline treatment. Stress, 2013 16, 477–481.
Couto FS, Batalha VL, Valadas JS, Data-Franca J, Ribeiro JA, Lopes LV: Escitalopram improves memory deficits induced by maternal separation in the rat. Eur J Pharmacol, 2012, 15, 695, 71–75.
D’Amato FR, Cabib S: Chronic exposure to a novel odor increases pups’ vocalizations, maternal care, and alters dopaminergic functioning in developing mice. Behav Neural Biol, 1987, 48, 197–205.
D’Amato FR, Cabib S, Ventura R, Orsini C: Long-term effects of postnatal manipulation on emotionality are prevented by maternal anxiolytic treatment in mice. Dev Psychobiol, 1998, 32, 225–234.
de Kloet ER, Sibug RM, Helmerhorst FM, Schmidt MV, Schmidt M: Stress, genes and the mechanism of programming the brain for later life. Neurosci Biobehav Rev, 2005, 29, 271–281.
Denenberg VH: Critical periods, stimuli input, and emotional reactivity: A theory of infantile stimulation. Psychol Rev, 1964, 71, 335–351.
Denenberg VH, Karas GG: Effects of differential infantile handling upon weight gain and mortality in the rat and mouse. Science, 1959, 130, 629–630.
Dimatelis JJ, Stein DJ, Russell VA: Behavioral changes after maternal separation are reversed by chronic constant light treatment. Brain Res, 2012, 1480, 61–71.
Durand M, Sarrieau A, Aguerre S, Mormede P, Chaouloff F: Differential effects of neonatal handling on anxiety, corticosterone response to stress, and hippocampal glucocorticoid and serotonin (5-HT)2A receptors in Lewis rats. Psychoneuroendocrinology, 1998, 23, 323–335.
Eklund MB, Arborelius L: Twice daily long maternal separations in Wistar rats decreases anxiety-like behaviour in females but does not affect males. Behav Brain Res, 2006, 172, 278–285.
Francis D, Diorio J, Liu D, Meaney MJ: Nongenomic transmission across generations of maternal behavior and stress responses in the rat. Science, 1999, 286, 1155–1158.
Francis DD, Caldji C, Champagne F, Plotsky PM, Meaney MJ: The role of corticotropin-releasing factor–norepinephrine systems in mediating the effects of early experience on the development of behavioral and endocrine responses to stress. Biol Psychiat, 1999, 46, 1153–1166.
Francis DD, Diorio J, Plotsky PM, Meaney MJ: Environmental enrichment reverses the effects of maternal separation on stress reactivity. J Neurosci, 2002, 22, 7840–7843
Gilbert R, Widom CS, Browne K, Fergusson D, Webb E, Janson S: Burden and consequences of child maltreatment in high-income countries. Lancet, 2009, 373, 68–81.
Greisen MH, Altar CA, Bolwig TG, Whitehead R, Wörtwein G: Increased adult hippocampal brain-derived neurotrophic factor and normal levels of neurogenesis in maternal separation rats. J Neurosci Res, 2005, 79, 772–778.
Hall FS: Social deprivation of neonatal, adolescent, and adult rats has distinct neurochemical and behavioral consequences. Crit Rev Neurobiol, 1998, 12, 129–162.
Hofer MA: Physiological responses of infant rats to separation from their mothers. Science, 1970, 168, 871–873.
Hofer MA: Studies on how early maternal separation produces behavioral change in young rats. Psychosom Med, 1975, 37, 245–264.
Hofer MA: The organization of sleep and wakefulness after maternal separation in young rats. Dev Psychobiol, 1976, 9, 189–205.
Hofer MA: The psychobiology of early attachment, Clin Neurosci Res, 2005, 15, 84–87.
Holmes A, Le Guisquet AM, Vogel E, Mollstein RA, Leman S, Belzung C: Early life genetic, epigenetic and environmental factors shaping emotionality in rodents. Neurosci Biobehav Rev, 2005, 29, 1335–1346.
Huot RL, Plotsky PM, Lenox RH, McNamara RK: Neonatal maternal separation reduces hippocampal mossy fiber density in adult Long Evans rats. Brain Res, 2002, 950, 52–63.
Huot RL, Smith MA, Plotsky PM: Alterations of maternal-infant interaction as a result of maternal separation in Long Evans rats and its behavioral and neuroendocrine consequences. Psychoneuroendocrinology, 1997, 22, Suppl 2, S173.
Huot RL, Thrivikraman KV, Meaney MJ, Plotsky PM: Development of adult ethanol preference and anxiety as a consequence of neonatal maternal separation in Long Evans rats and reversal with antidepressant treatment. Psychopharmacology (Berl), 2001, 158, 366–373.
Johnston AL, File SE: Sex differences in animal tests of anxiety. Physiol Behav, 1991, 49, 245–250.
Kaffman A, Meaney M: Neurodevelopmental sequelae of postnatal maternal care in rodents: clinical and research implications of molecular insights. J Child Psychol Psychiatry, 2007, 48, 224–244.
Kalinichev M, Easterling KW, Plotsky PM, Holtzman SG: Long-lasting changes in stress-induced corticosterone response and anxiety-like behaviors as a consequence of neonatal maternal separation in Long-Evans rats. Pharmacol Biochem Behav, 2002, 73, 131–140.
Kaplow JB, Widom CS: Age of onset of child maltreatment predicts long-term mental health outcomes. J Ab-norm Psychol, 2007, 116, 176–187.
Kaufman J, Charney D: Effects of early stress on brain structure and function: implications for understanding the relationship between child maltreatment and depression. Dev Psychopathol, 2001, 13, 451–471.
Khoury A, Gruber SH, Mørk A, Mathé AA: Adult life behavioral consequences of early maternal separation are alleviated by escitalopram treatment in a rat model of depression. Prog Neuropsychopharmacol Biol Psychiatry, 2006, 30, 535–540.
Kojima S, Alberts JR: Oxytocin mediates the acquisition of filial, odor-guided huddling for maternally-associated odor in preweanling rats. Horm Behav, 2011, 60, 549–558.
Kojima S, Stewart RA, Demas GE, Alberts JR: Maternal contact differentially modulates central and peripheral oxytocin in rat pups during a brief regime of mother-pup interaction that induces a filial huddling preference. J Neuroendocrinol, 2012, 24, 831–840.
Kraepelin E: Comparative psychiatry (German). Zentbl Nervenheilk Psychiat, 1904, 27, 433–437.
Kuhn CM, Pauk J, Schanberg SM: Endocrine responses to mother-infant separation in developing rats. Dev Psychobiol, 1990, 23, 395–410.
Ladd CO, Huot RL, Thrivikraman KV, Nemeroff CB, Plotsky PM: Long-term adaptations in glucocorticoid receptor and mineralocorticoid receptor mRNA and negative feedback on the hypothalamo-pituitary-adrenal axis following neonatal maternal separation. Biol Psychiatry, 2004, 55, 367–375.
Ladd CO, Huot RL, Thrivikraman KV, Nemeroff CB, Meaney MJ, Plotsky PM: Long-term behavioral and neuroendocrine adaptations to adverse early experience. Progr Brain Res, 2000, 122, 81–103.
Ladd CO, Owens MJ, Nemeroff CB: Persistent changes in corticotropin-releasing factor neuronal systems induced by maternal deprivation. Endocrinology, 1996, 137, 1212–1218.
Lajud N, Roque A, Cajero M, Gutiérrez-Ospina G, Torner L: Periodic maternal separation decreases hippo-campal neurogenesis without affecting basal corticosterone during the stress hyporesponsivriod, but alters HPA axis and coping behavior in adulthood. Psychoneuroen-docrinology, 2012, 37, 410–420.
Lehmann J, Feldon J: Long-term biobehavioral effects of maternal separation in the rat: consistent or confusing? Rev Neurosci, 2000, 11 383–408.
Leventopoulos M, Russig H, Feldon J, Pryce CR, Opacka-Juffry J: Early deprivation leads to long-term reductions in motivation for reward and 5-HT1A binding and both effects are reversed by fluoxetine, Neurophar-macology, 2009, 56, 692–670.
Levine S: Infantile experience and resistance to physiological stress. Science, 1957, 126, 405.
Levine S: Plasma-free corticosteroid response to electric shocks in rats stimulated in infancy. Science, 1962, 135, 795–796.
Lévy F, Melo AI, Galef BG Jr, Madden M, Fleming AS: Complete maternal deprivation affects social, but not spatial, learning in adult rats. Dev Psychobiol, 2003, 43, 177–191.
Lippmann M, Bress A, Nemeroff CB, Plotsky PM, Monteggia LM: Long-term behavioural and molecular alterations associated with maternal separation in rats. Eur J Neurosci, 2007, 25, 3091–3098.
Liu D, Caldji C, Sharma S, Plotsky PM, Meaney MJ: Influence of neonatal rearing conditions on stress-induced adrenocorticotropin responses and norepinep-herine release in the hypothalamic paraventricular nucleus. J Neuroendocrinol, 2000, 12, 5–12.
Liu D, Diorio J, Day JC, Francis DD, Meaney MJ: Maternal care, hippocampal synaptogenesis and cognitive development in rats. Nat Neurosci, 2000, 3, 799–806.
Liu D, Diorio J, Tannenbaum B, Caldji C, Francis D, Freedman A, Sharma S et al.: Maternal care, hippocampal glucocorticoid receptors, and hypothalamic–pituitary–adrenal responses to stress. Science, 1997, 277, 1659–1662.
Ludington-Hoe SM, Morgan K, Abouefettoh A: A clinical guideline for implementation of kangaroo care with premature infants of 30 weeks’ postmenstrual age. Adv Neonatal Care, 2008, 8, Suppl, S3–S23.
MacQueen GM, Ramakrishnan K, Ratnasingan R, Chen B, Young LT: Desipramine treatment reduces the long-term behavioural and neurochemical sequelae of early-life maternal separation. Int J Neuropsychopharmacol, 2003, 6, 391–396.
Maniam J, Morris MJ: Palatable cafeteria diet ameliorates anxiety and depression-like symptoms following an adverse early environment. Psychoneuroendocrinology, 2010, 35, 717–728.
Marco EM, Adriani W, Llorente R, Laviola G, Viveros MP: Detrimental psychophysiological effects of early maternal deprivation in adolescent and adult rodents: altered responses to cannabinoid exposure. Neurosci Biobehav Rev, 2009, 33, 498–507.
Marmendal M, Roman E, Eriksson CJ, Nylander I, Fahlke C: Maternal separation alters maternal care, but has minor effects on behavior and brain opioid peptides in adult offspring. Dev Psychobiol, 2004, 45, 140–152.
Matthews K, Robbins TW: Early experience as a determinant of adult behavioural responses to reward: the effects of repeated maternal separation in the rat. Neurosci Biobehav Rev, 2003, 27, 45–55.
Matthews K, Wilkinson LS, Robbins TW: Repeated maternal separation of preweanling rats attenuates behavioral responses to primary and conditioned incentives in adulthood. Physiol Behav, 1996, 59, 99–107.
McEwen BS: Early life influences on life-long patterns of behavior and health. Ment Retard Dev Disabil Res Rev, 2003, 9, 149–154.
McIntosh J, Anisman H, Merali Z: Short- and long-periods of neonatal maternal separation differentially affect anxiety and feeding in adult rats: gender-dependent effects. Brain Res Dev Brain Res, 1999, 113, 97–106.
Meaney MJ. Maternal care, gene expression, and the transmission of individual differences in stress reactivity across generations. Annu Rev Neurosci, 2001, 24, 1161–1192.
Meaney MJ, Aitken DH, Bodnoff SR, Iny LJ, Tatarewicz JE, Sapolsky RM: Early postnatal handling alters gluco-corticoid receptor concentrations in selected brain regions. Behav Neurosci, 1985, 99, 760–765.
Meaney MJ, Viau V, Bhatnagar S, Betito K, Iny LJ, O’Donnell D, Mitchell JB: Cellular mechanisms underlying the development and expression of individual differences in the hypothalamic–pituitary–adrenal stress response. J Steroid Biochem Mol Biol, 1991, 39, 265–274.
Millstein RA, Holmes A: Effects of repeated maternal separation on anxiety- and depression-related phenotypes in different mouse strains. Neurosci Biobehav Rev, 2007, 31, 3–17.
Millstein RA, Ralph RJ, Yang RJ, Holmes A: Effects of repeated maternal separation on prepulse inhibition of startle across inbred mouse strains. Genes Brain Behav, 2006, 5, 346–354.
Moldavsky D: The implication of transcultural psychiatry for clinical practice. Isr J Psychiatry Relat Sci, 2003, 40, 47–56.
Morgan BE, Horn AR, Bergman NJ: Should neonates sleep alone? Biol Psychiatry, 2011, 70, 817–825.
Mullen PE, Martin JL, Anderson JC, Romans SE, Herbison GP: The long-term impact of the physical, emotional, and sexual abuse of children: a community study. Child Abuse Negl, 1996, 20, 7–21.
Nemeroff CB, Heim CM, Thase ME, Klein DN, Rush AJ, Schatzberg AF, Ninan PT et al.: Differential responses to psychotherapy versus pharmacotherapy in patients with chronic forms of major depression and childhood trauma. Proc Natl Acad Sci USA, 2003, 100, 14293–14296.
NICE clinical guidelines: CG37 Postnatal care: Routine postnatal care of women and their babies. Starting successful breastfeeding., July 2006.
Noorikhajavi M, Afghah S, Dadkhah A, Holakoyie K, Motamedi SH: The effect of “parental loss” under 18 on developing “MDD” in adult age. Int J Psychiatry Med, 2007, 37, 347–355.
Papaioannou A, Gerozissis K, Prokopiou A, Bolaris S, Stylianopoulou F: Sex differences in the effects of neonatal handling on the animal’s response to stress and the vulnerability for depressive behaviour. Behav Brain Res, 2002, 129, 131–139.
Parfitt DB, Walton JR, Corriveau EA, Helmreich DL: Early life stress effects on adult stress-induced corticosterone secretion and anxiety-like behavior in the C57BL/6 mouse are not as robust as initially thought. Horm Behav, 2007, 52, 417–426.
Parker KJ, Maestripieri D: Identifying key features of early stressful experiences that produce stress vulnerability and resilience in primates. Neurosci Biobehav Rev, 2010, 35, 1466–1483.
Pesonen AK, Räikkönen K, Heinonen K, Kajantie E, Forsén T, Eriksson JG: Depressive symptoms in adults separated from their parents as children: a natural experiment during World War II. Am J Epidemiol, 2007, 166, 1126–1133.
Ploj K, Roman E, Bergström L, Nylander I: Effects of neonatal handling on nociceptin/orphanin FQ and opioid peptide levels in female rats. Pharmacol Biochem Behav, 2001, 69, 173–179.
Ploj K, Roman E, Nylander I: Effects of maternal separation on brain nociceptin/orphanin FQ peptide levels in male Wistar rats.Pharmacol Biochem Behav, 2002, 73, 123–129.
Ploj K, Roman E, Nylander I: Long-term effects of short and long periods of maternal separation on brain opioid peptide levels in male Wistar rats. Neuropeptides, 2003, 37, 149–156.
Plotsky PM, Bradley CC, Anand KJS: Behavioral and neuroendocrine consequences of neo-natal stress. In: Pain in Neonates, Eds. Anand KJS, McGrath PJ, Stevens BJ, Elsevier Science, Amsterdam, 2000, 77–99.
Plotsky PM, Meaney MJ: Early, postnatal experience alters hypothalamic corticotropin-releasing factor (CRF) mRNA, median eminence CRF content and stress-induced release in adult rats. Brain Res Mol Brain Res, 1993, 18, 195–200.
Pryce CR, Aubert Y, Maier C, Pearce PC, Fuchs E: The developmental impact of prenatal stress, prenatal dexamethasone and postnatal social stress on physiology, behaviour and neuroanatomy of primate offspring: Studies in rhesus macaque and common marmoset. Psycho-pharmacology (Berl), 2011, 214, 33–53.
Pryce CR, Dettling AC, Spengler M, Schnell CR, Feldon J: Deprivation of parenting disrupts development of homeostatic and reward systems in marmoset monkey offspring. Biol Psychiatry, 2004, 56, 72–79.
Pryce CR, Feldon J: Long-term neurobehavioural impact of the postnatal environment in rats: manipulations, effects and mediating mechanisms. Neurosci Biobehav Rev, 2003, 27, 57–71.
Renard GM, Rivarola MA, Suárez MM: Sexual dimorphism in rats: effects of early maternal separation and variable chronic stress on pituitary-adrenal axis and behavior. Int J Dev Neurosci, 2007, 25, 373–379.
Roceri M, Cirulli F, Pessina C, Peretto P, Racagni G, Riva MA: Postnatal repeated maternal deprivation produces age-dependent changes of brain-derived neurotrophic factor expression in selected rat brain regions. Biol Psychiatry, 2004, 55, 708–714.
Rodgers C: Why Kangaroo Mother Care should be standard for all newborns. J Midwifery Womens Health, 2013, 58, 249–252.
Rüedi-Bettschen D, Feldon J, Pryce CR: The impaired coping induced by early deprivation is reversed by chronic fluoxetine treatment in adult Fischer rats. Behav Pharmacol, 2004, 15, 413–421.
Rüedi-Bettschen D, Zhang W, Russig H, Ferger B, Weston A, Pedersen EM, Feldon J, Pryce CR: Early deprivation leads to altered behavioural, autonomic and endocrine responses to environmental challenge in adult Fischer rats. Eur J Neurosci, 2006, 24, 2879–2893.
Sánchez MM, Ladd CO, Plotsky PM: Early adverse experience as a developmental risk factor for later psycho-pathology: evidence from rodent and primate models. Dev Psychopathol, 2001, 13, 419–449.
Sapolsky RM, Meaney MJ: Maturation of the adrenocortical stress response: neuroendocrine control mechanisms and the stress hyporesponsive period, Brain Res, 1986, 396, 64–76.
Schmidt MV: Animal models for depression and the mismatch hypothesis of disease. Psychoneuroendocrinology, 2011, 36, 330–338.
Schmidt MV, Wang XD, Meijer OC: Early life stress paradigms in rodents: potential animal models of depression? Psychopharmacology (Berl), 2011, 214, 131–140.
Schreiber HL, Bell RW, Kufner M, Villescas R: Maternal behavior: a determinant of amphetamine toxicity in rats. Psychopharmacology (Berl), 1977, 52, 173–176.
Stahl CE, Redei E, Wang Y, Borlongan CV: Behavioral, hormonal and histological stress markers of anxiety-separation in postnatal rats are reduced by prepro-thyrotropin-releasing hormone. Neurosci Lett, 2002, 15, 321, 85–89.
Stanton ME, Levine S: Inhibition of infant glucocorticoid stress response: specific role of maternal cues. Dev Psychobiol, 1990, 23, 411–426.
Swinny JD, O’Farrell E, Bingham BC, Piel DA, Valentino RJ, Beck SG: Neonatal rearing conditions distinctly shape locus coeruleus neuronal activity, dendritic arborization, and sensitivity to corticotrophin-releasing factor. Int J Neuropsychopharmacol, 2010, 13, 515–225.
Thierry B, Steru L, Chermat R, Simon P: Searching-waiting strategy: a candidate for an evolutionary model of depression? Behav Neural Biol, 1984, 41, 180–189.
Trujillo V, Masseroni ML, Levin G, Suárez MM: Tianeptine influence on plasmatic catecholamine levels and anxiety index in rats under variable chronic stress after early maternal separation. Int J Neurosci, 2009, 119, 1210–1227.
Tyrka AR, Wier L, Price LH, Ross N, Anderson GM, Wilkinson CW, Carpenter LL: Childhood parental loss and adult hypothalamic-pituitary-adrenal function. Biol Psychiatry, 2008, 63, 1147–1154.
Tyrka AR, Wier L, Price LH, Ross NS, Carpenter LL: Childhood parental loss and adult psychopathology: effects of loss characteristics and contextual factors. Int J Psychiatry Med, 2008, 38, 329–344.
Velandia M, Uvnäs-Moberg K, Nissen E: Sex differences in newborn interaction with mother or father during skin-to-skin contact after Caesarean section. Acta Paediatr, 2012, 101, 360–367.
Weber BC, Manfredo HN, Rinaman L: A potential gastrointestinal link between enhanced postnatal maternal care and reduced anxiety-like behavior in adolescent rats. Behav Neurosci, 2009, 123, 1178–1184.
Weininger O:Mortality of albino rats under stress as a function of early handling. Can J Psychol, 1953, 7, 111–114.
Weinshenker D, Schroeder JP: There and back again: a tale of norepinephrine and drug addiction. Neuropsy-chopharmacology, 2007, 32, 1433–1451.
Wigger A, Neumann ID: Periodic maternal deprivation induces gender-dependent alterations in behavioral and neuroendocrine responses to emotional stress in adult rats. Physiol Behav, 1999, 66, 293–302 .
Winberg J: Mother and newborn baby: mutual regulation of physiology and behavior – a selective review. Dev Psychobiol, 2005, 47, 217–229.
Zimmerberg B, Sageser KA: Comparison of two rodent models of maternal separation on juvenile social behavior. Front Psychiatry, 2011, 2, 39. doi: https://doi.org/10.3389/fpsyt.2011.00039.
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Vetulani, J. Early maternal separation: a rodent model of depression and a prevailing human condition. Pharmacol. Rep 65, 1451–1461 (2013). https://doi.org/10.1016/S1734-1140(13)71505-6
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DOI: https://doi.org/10.1016/S1734-1140(13)71505-6