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Evaluation of s100β, NSE and GFAP Levels in Renal Transplantation

NCT04042272 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 80

Last updated 2021-04-28

No results posted yet for this study

Summary

Uremic encephalopathy is an organic brain disorder may be frequently seen in patients with acute or chronic renal failure. Certain neurological symptoms can be found under clinical glomerular filtration rate of 15 ml/minutes. The above mentioned neurological disorders can be due to uremic toxins as well as many other reasons such as metabolic and hemodynamic disturbances, inflammation, or oxidative stress. Most frequent symptoms are impaired consciousness, lethargy, cranial nerve involvement, nystagmus, dysarthria, and even coma and death. Brain tissue may receive damage and some secondary biomarkers may appear in case BUN (Blood Urea Nitrogen) level is \>175 mg/dl together with neuroinflammation. Although hemodialysis is a temporary solution in terms of treatment, these symptoms may be reversible in the long-run with organ transplantation. A rigorous neurological assessment before transplantation is important for identifying the severity and distribution of the neurological disorder as well as defining the abnormalities that are responding to the current treatments and foreseeing potential postoperative prognosis.

S100β is excreted by astrocytes in brain damage cases. S100β level rises when brain damage starts, thus it may be used in the prognosis of brain damage in its early period. Neuron-specific enolase (NSE) functions as intracytoplasmic enzyme and serum level rises in neuron damage. Glial fibrillary acidic protein (GFAP), on the other hand, is the intermediary filament cytoskeleton protein found in astrocytes. It has the same root structure with S100β.

The purpose of this study is to assess neurological damage by looking at the levels of S100β, NSE and GFAP in patients who underwent kidney transplantation and to analyze the impacts on the prognosis.

Conditions

  • Kidney Transplant; Complications
  • Neurologic Manifestations
  • Uremic Encephalopathy

Interventions

DIAGNOSTIC_TEST

S100β, Neuron specific enolase (NSE) and Glial fibrillary acidic protein (GFAP)

S100β is 10.4 kDa protein. Synthesized with end-feet processes of astrocytes in the brain S100β belongs to low molecular weight EF-hand type acidic calcium-binding protein superfamily. This protein is metabolized in the kidneys and removed with urine. It is shown that S100β does not show differences due to ethnical groups or genders and is not affected by circadian rhythm. Although S100β is also found in other tissues, it is in higher concentrations in the brain so it can be used as an early indicator for brain damage.NSE is an SSS protein which exists in neurons and neuroendocrine tissues. NSE plays a role in glycolytic route in neurons as intracytoplasmic enzyme increasing serum level in case of neuron damage. Whilst S100β is the marker of astroglia dysfunction, NSE is the marker of neuronal dysfunction. Glial fibrillary acidic protein (GFAP) is the intermediate filament cell skeleton protein found in astrocytes. It originates from the same root structure as S100β.

Sponsors & Collaborators

  • Akdeniz University

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2019-08-15
Primary Completion
2020-12-15
Completion
2021-01-15

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04042272 on ClinicalTrials.gov