Publications by authors named "N A Levitskaya"

Current antidepressant therapy shows substantial limitations, and there is an urgent need for the development of new treatment strategies for depression. Stressful events and hyperactivity of the hypothalamic-pituitary-adrenal (HPA) axis play an important role in the pathogenesis of depression. HPA axis activity is self-regulated by negative feedback at several levels including adrenocorticotropic hormone (ACTH)-mediated feedback.

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Synthetic peptides have a wide range of clinical effects. Of particular interest are peptides based on adrenocorticotropic hormone (ACTH) both as already used and as potential drugs for preventing consequences of cerebral ischemia. However, it is necessary to study influence of the peptide on the brain cells under normal physiological conditions, including understanding the risks of their use.

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The central effectors of the stress system are greatly interconnected and include, among others, a large group of peptides derived from proopiomelanocortin. In addition to natural corticotropins, a number of artificial molecules that contain some ACTH fragments in their structure are also referred to members of this family. Some of them possess a wide range of biological activity.

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Unlabelled: was to assess the effectivity of PMGMU2018h scale for evaluation of the state severity degree of patients suffering from obstructive jaundice relative to other common assessment scales.

Materials And Methods: Thirty physical parameters have been studied and compared according to different assessment scales in each of 258 patients with obstructive jaundice treated in three medical settings.

Results: The main drawback of the examined scales is the necessity to use the parameters for calculations not included in the medical and economic standards of the Russian Federation.

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Article Synopsis
  • Natural melanocortins (MCs), like Semax and ACTH(6-9)PGP, have shown potential in developing drugs with neuroprotective effects, particularly during stress.
  • In an experiment with rats, both MC derivatives were found to reduce behavioral changes caused by acute restraint stress (ARS) when administered beforehand.
  • RNA sequencing revealed that Semax affected over 1500 genes while ACTH(6-9)PGP affected fewer than 400, highlighting how these peptides help normalize gene expression disrupted by stress, particularly in the hippocampus.
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