Journal
NEUROBIOLOGY OF DISEASE
Volume 165, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.nbd.2022.105646
Keywords
Postpartum depression; Inflammation; Neurodegeneration
Categories
Funding
- NIH [MH104656, MH110415]
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Postpartum depression is a common psychiatric complication associated with pregnancy and childbirth, negatively impacting the mother's quality of life and potentially affecting the child's development. It shares similarities with major depressive disorder and is linked to inflammation theory, with dysregulation and hyperactivation of the body's immune response to stress as contributing factors. The stress and changes faced by new mothers can harm critical brain systems, impair neuronal growth and repair, and alter mood and cognition.
Postpartum depression (PPD) is the most common psychiatric complication associated with pregnancy and childbirth with debilitating symptoms that negatively impact the quality of life of the mother as well as inflict potentially long-lasting developmental impairments to the child. Much of the theoretical pathophysiology put forth to explain the emergence of PPD overlaps with that of major depressive disorder (MDD) and, although not conventionally described in such terms, can be seen as neurodegenerative in nature. Framing the disorder from the perspective of the well-established inflammatory theory of depression, symptoms are thought to be driven by dysregulation, and subsequent hyperactivation of the body's immune response to stress. Compounded by physiological stressors such as drastic fluctuations in hormone signaling, physical and psychosocial stressors placed upon new mothers lay bare a number of significant vulnerabilities, or points of potential failure, in systems critical for maintaining healthy brain function. The inability to compensate or properly adapt to meet the changing demands placed upon these systems has the potential to damage neurons, hinder neuronal growth and repair, and disrupt neuronal circuit integrity such that essential functional outputs like mood and cognition are altered. The impact of this deterioration in brain function, which includes depressive symptoms, extends to the child who relies on the mother for critical life-sustaining care as well as important cognitive stimulation, accentuating the need for further research.
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