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  2. Enkephalin - Wikipedia

    en.wikipedia.org/wiki/Enkephalin

    A 2017 study indicates that this polypeptide may be linked to brain functioning during the stress response, especially in the hippocampus and prefrontal cortex. This research has suggested that, as part of the stress response, several met-enkephalin analogs have increased activity in the hippocampus , while leu-enkephalin analogs as well as ...

  3. Epigenetics of anxiety and stress–related disorders - Wikipedia

    en.wikipedia.org/wiki/Epigenetics_of_anxiety_and...

    Accordingly, transcriptional repression of DNMT1 in response to long-term stress-mimicking exposure causes decreased DNA methylation, which is a marker of gene activation. In particular, there is decreased methylation of a gene called fkbp5, which plays a role in stress response as a glucocorticoid-responsive gene. Thus, chronic stress may ...

  4. Stress (biology) - Wikipedia

    en.wikipedia.org/wiki/Stress_(biology)

    Schematic overview of the classes of stresses in plants Neurohormonal response to stress. Stress, whether physiological, biological or psychological, is an organism's response to a stressor such as an environmental condition. [1] When stressed by stimuli that alter an organism's environment, multiple systems respond across the body. [2]

  5. Stress hormone - Wikipedia

    en.wikipedia.org/wiki/Stress_hormone

    A moderate and short-term stress response can benefit the immune system, while a severe and long-term stress response can be detrimental to the immune system. The balance between the positive and negative effects of stress hormones is essential for maintaining the health and well-being of the organism. [12] [13] [14] [4]

  6. Allostatic load - Wikipedia

    en.wikipedia.org/wiki/Allostatic_load

    A typical allostatic response has been initiated by a stressor and then continues for the duration of the stressor, in which it shuts off as the stressor has ended. Allostatic load is the accumulation of stressors and maladaptive responses that may result in an extreme state, where the stress response does not terminate. [26]

  7. Cellular stress response - Wikipedia

    en.wikipedia.org/wiki/Cellular_stress_response

    Stress proteins can exhibit widely varied functions within a cell- both during normal life processes and in response to stress. For example, studies in Drosophila have indicated that when DNA encoding certain stress proteins exhibit mutation defects, the resulting cells have impaired or lost abilities such as normal mitotic division and ...

  8. Acute stress reaction - Wikipedia

    en.wikipedia.org/wiki/Acute_stress_reaction

    Stress activates this axis and produces neuro-biological changes. These chemical changes increase the chances of survival by bringing the physiological system back to homeostasis. [12] The autonomic nervous system controls all automatic functions in the body and contains two subsections within it that aid the response to an acute stress reaction.

  9. Biology of depression - Wikipedia

    en.wikipedia.org/wiki/Biology_of_depression

    The response to reward in the medial orbitofrontal cortex (OFC) is attenuated in depression, while lateral OFC response is enhanced to punishment. The lateral OFC shows sustained response to absence of reward or punishment, and it is thought to be necessary for modifying behavior in response to changing contingencies.