Mark Hanson - Maternal Mental Health Alliance€¦ · Mark Hanson. 2 Mental Health ... Hanson M,...
Transcript of Mark Hanson - Maternal Mental Health Alliance€¦ · Mark Hanson. 2 Mental Health ... Hanson M,...
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Institute of
Developmental Sciences
Developmental origins of mental health: new
insights into mechanisms and interventions
Mark Hanson
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Mental Health – do the roots lie mainly
in the past?
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3May 2017
Or the present?
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Or somewhere in between?
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Development: does that mean that the
underlying mechanisms are genetic?
“To understand the molecular mechanisms
of depression, collect genetic data from
more than 100,000 people” says Steven
Hyman
Nature 13 Nov 2014. Special issue on
depression
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The Dutch Hunger Winter 1944/5
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Later consequences of famine exposure at
different gestational periodsEarly Mid Late
Young adult
• cong. neural def. +
•♂ obese +
40-60 years
• brain anomalies +
• schizophrenia +
• antisocial person.dis +
• major affective disorder +
• depressive symptoms + +
• ↓ perceived mental health + +
•♀ obese + +
• atherogenic lipid profile + (?)
• BP ↑ low protein % +
• BP ↑ after stress +
• coronary heart disease +
• impaired glucose tolerance + + +(?)
• micro albuminuria +
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Genetic
Developmental
Environment
Epigenetic
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Mechanisms of epigenetics
Zaidi S K et al. Mol. Cell. Biol. 2010;30:4758-4766
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Lillycrop et al. I.J. Epidem. 2015;44:1263-1276
HES1 methylation at birth and childhood neuropsychological function.Wechsler Pre-School and Primary Scale of Intelligence
(WPPSI IQ) at age 4 years.
Spatial span length at age 7 years
Delayed matching to
sample at age 7 years
Infant externalising
score at age 1yr
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J. Child Psychol. Psychiat. 2016
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Li, Y.M., Ou, J.J., Liu, L., Zhang, D., Zhao, J.P. and Tang, S.Y., 2016. Association between maternal
obesity and autism spectrum disorder in offspring: A meta-analysis. Journal of autism and developmental
disorders, 46(1), pp.95-102.
Five observational studies were included in the meta-analysis. The pooled adjusted odds ratio was 1.47 (95 % CI 1.24–1.74). The results support an increased risk of autism spectrum disorder in children of women who were obese during pregnancy. However, further study is warranted to confirm these results.
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Appleton, A. A. et al (2013). Patterning in placental 11-B hydroxysteroid
dehydrogenase methylation according to prenatal socioeconomic
adversity. PloS one, 8(9), e74691.
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Poore K, Hanson M, Faustman M, Neira M. Avoidable early life environmental exposures. The Lancet Planetary Health (2017) Vol 1.
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19Nature Scientific Reports, April 2017.
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Hanson M, Barker M, Stephenson J
et al. The Lancet Diabetes and
Endocrinology, Oct 13 2016
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Summary➢DOHaD research confirms the importance of early life
environment to neurocognitive development & mental health
➢A range of factors, many of which are avoidable, are
implicated, including under- and overnutrition, obesity, stress,
smoking and environmental toxicants
➢The heritable nature of underlying processes is not simply
via fixed genetics, but epigenetic mechanisms involved in
developmental plasticity
➢These may provide early biomarkers of risk and for
assessing efficacy of interventions
➢A life course approach emphasises the importance of
interventions in the preconception period, e.g. in adolescents
➢Such interventions need to be developed with young people
themselves, to generate motivation and demand for services
and support
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