Fatigue in primary Sjögren’s syndrome: A proteomic pilot study of cerebrospinal fluid, 2019, Nilsen et al

Andy · Jun 22, 2019

Abstract
Objectives:
Fatigue is a frequent and often disabling phenomenon that occurs in patients with chronic inflammatory and immunological diseases, and the underlying biological mechanisms are largely unknown. Because fatigue is generated in the brain, we aimed to investigate cerebrospinal fluid and search for molecules that participate in the pathophysiology of fatigue processes.

Methods:
A label-free shotgun proteomics approach was applied to analyze the cerebrospinal fluid proteome of 20 patients with primary Sjögren’s syndrome. Fatigue was measured with the fatigue visual analog scale.

Results:
A total of 828 proteins were identified and the 15 top discriminatory proteins between patients with high and low fatigue were selected. Among these were apolipoprotein A4, hemopexin, pigment epithelium-derived factor, secretogranin-1, secretogranin-3, selenium-binding protein 1, and complement factor B.

Conclusion:
Most of the discriminatory proteins have important roles in regulation of innate immunity, cellular stress defense, and/or functions in the central nervous system. These proteins and their interacting protein networks may therefore have central roles in the generation and regulation of fatigue, and the findings contribute with evidence to the concept of fatigue as a biological phenomenon signaled through specific molecular pathways.
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Open access, https://journals.sagepub.com/doi/10.1177/2050312119850390

rvallee · Jun 22, 2019

phenomenon: a fact or situation that is observed to exist or happen, especially one whose cause or explanation is in question.
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Uh. Don't know if that's meant as an observation of how it's currently operationalized or an opinion of how it should be.

It's definitely true that, like anxiety, fatigue is basically used as a catch-all hand-waving explanation for everything under the sun. Which obviously is a very bad idea. It's definitely true that you can't really do genuine science until you can measure accurately. That certainly holds up.

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Fatigue in primary Sjögren’s syndrome: A proteomic pilot study of cerebrospinal fluid, 2019, Nilsen et al

Andy Retired committee member

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Fatigue in primary Sjögren’s syndrome: A proteomic pilot study of cerebrospinal fluid, 2019, Nilsen et al

Andy Retired committee member

rvallee Senior Member (Voting Rights)

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