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https://www.selleckchem.com/products/mv1035.html 020 S. Karger AG, Basel.T lymphocytes follow three main stages of differentiation during their lifetime history - memory generation, memory homeostasis, and immunosenescence. Current definitions of T cell immunosenescence now include distinct aspects of both T cell senescence and exhaustion. Multiple studies have indicated a loss of vaccine efficacy in old age, and because this period coincides with the onset of T cell immunosenescence, the latter has often been implicated in the loss of vaccine responsiveness. This chapter examines changes in T cell homeostasis with age, and proposes mechanisms of how these changes, together with senescence and exhaustion, could affect the T cell contribution to the vaccine response. © 2020 S. Karger AG, Basel.INTRODUCTION Exposure to traumatic stressful events in childhood is an important risk factor for the development of posttraumatic symptomatology. From a mentalization-based developmental perspective, childhood adversity can affect attachment in children and may result in insecure attachment and impaired mentalizing abilities, which increase the lifetime risk for psychopathology. The present cross-sectional study examined the potential mediating role of attachment insecurity and impaired mentalizing on the relationship between childhood trauma and posttraumatic symptomatology. METHOD Adults who had experienced childhood neglect and abuse (n = 295, 184 patients with personality disorder and 111 community controls) completed self-report measures of posttraumatic stress disorder (PTSD) symptoms, dissociative experiences, adult attachment insecurity, and mentalizing. RESULTS Structural equation modelling results revealed that attachment insecurity together with lower mentalizing mediated the link between childhood trauma and PTSD symptoms, and lower mentalizing mediated the link between childhood trauma and dissociative experiences. CONCLUSION The findings show that attachment insec

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