Microglia in the RVLM of SHR have reduced P2Y12R and CX3CR1 expression, shorter processes, and lower cell density

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Updated: Jan 31, 2026

Characterization and Isolation of Mouse Primary Microglia by Density Gradient Centrifugation
10:21

Characterization and Isolation of Mouse Primary Microglia by Density Gradient Centrifugation

Published on: February 16, 2018

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E Myfanwy Cohen1, Suja Mohammed1, Mary Kavurma1

  • 1The Heart Research Institute, Sydney, New South Wales 2042, Australia; Sydney Medical School, University of Sydney, Sydney, New South Wales 2006, Australia.

Autonomic Neuroscience : Basic & Clinical
|January 2, 2019
PubMed

Insights

Microglia in the rostral ventrolateral medulla (RVLM) of hypertensive rats show reduced function and activation markers. This suggests a mild neuroinflammatory state contributing to essential hypertension.

Area of Science:

  • Neuroscience
  • Cardiovascular Research
  • Immunology

Background:

  • Essential hypertension is linked to chronic neuroinflammation.
  • Microglia are key players in brain inflammation.
  • The rostral ventrolateral medulla (RVLM) is crucial for blood pressure regulation.

Purpose of the Study:

  • To investigate microglial gene expression and morphology in the RVLM of spontaneously hypertensive rats (SHR).
  • To compare RVLM microglia in SHR with normotensive Wistar-Kyoto rats (WKY).

Main Methods:

  • Quantitative analysis of microglial gene expression for P2Y12R and CX3CR1.
  • Histological assessment of microglial cell density and process morphology in the RVLM.

Main Results:

  • Downregulation of P2Y12R (37.3%) and CX3CR1 (30.9%) gene expression in SHR RVLM.
  • Reduced microglial cell density (22.9%) and shorter microglial processes (18.7%) in SHR RVLM.
  • These changes indicate altered microglial function and activation.

Conclusions:

  • RVLM microglia in SHR exhibit a subtle loss of function or mild inflammatory phenotype.
  • These microglial alterations may contribute to the pathophysiology of essential hypertension.
Keywords:
CX3CR1HypertensionMicrogliaP2Y12RRVLMSHR

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