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Related Experiment Video

Updated: Feb 25, 2026

Modeling Astrocytoma Pathogenesis In Vitro and In Vivo Using Cortical Astrocytes or Neural Stem Cells from Conditional, Genetically Engineered Mice
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ASTROCYTOMAS AND PROGNOSIS-FROM MORPHOLOGY TO TUMOR BIOLOGY.

Ritu Lakhtakia1, Arti Trehan2, Ramji Rai3

  • 1Classified Specialist (Pathology), Department of Pathology, All India Institute of Medical Sciences (AIIMS), New Delhi (on study leave).

Medical Journal, Armed Forces India
|August 10, 2017
PubMed
Summary
This summary is machine-generated.

Proliferating Cell Nuclear Antigen (PCNA) shows promise as a prognostic marker for astrocytoma, correlating with tumor grade and patient outcomes. Further research is needed to establish its link to survival and recurrence.

Keywords:
AstrocytomaPCNAProliferation markers

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Area of Science:

  • Neuro-oncology
  • Pathology
  • Cancer research

Background:

  • Astrocytoma prognosis traditionally relies on histologic grading.
  • There is a need for more objective methods to predict tumor behavior.

Purpose of the Study:

  • To evaluate Proliferating Cell Nuclear Antigen (PCNA) as a novel proliferation marker for astrocytoma.
  • To compare PCNA's prognostic accuracy with traditional histologic grading.

Main Methods:

  • Studied 27 astrocytoma cases.
  • Assessed PCNA expression using labeling indices (LI).
  • Correlated PCNA LI with histologic grade and patient outcomes.

Main Results:

  • A direct correlation was found between astrocytoma grade and PCNA expression.
  • A 25% PCNA LI distinguished between low and high-grade tumors.
  • A statistically significant difference in PCNA LI was observed between surviving and deceased patients.

Conclusions:

  • PCNA expression correlates with astrocytoma grade.
  • PCNA offers an objective method for assessing tumor biology.
  • While promising, further studies with longer follow-up are required to confirm PCNA's relation to survival and recurrence.