Infiltrating immune cells in the kidney in salt-sensitive hypertension and renal injury

David L. Mattson

Research output: Contribution to journalReview article

Abstract

The importance of the immune system in hypertension, vascular disease, and renal disease has been appreciated for over 50 years. Recent experimental advances have led to a greater appreciation of the mechanisms whereby inflammation and immunity participate in cardiovascular disease. In addition to the experimental data, multiple studies in patients have demonstrated a strong correlation between the observations made in animals and humans. Of great interest is the development of salt-sensitive hypertension in humans with the concurrent increase in albumin excretion rate. Experiments in our laboratory have demonstrated that feeding a high-NaCl diet to Dahl salt-sensitive (SS) rats results in a significant infiltration of T lymphocytes into the kidney that is accompanied by the development of hypertension and renal disease. The development of disease in the Dahl SS closely resembles observations made in patients; studies were therefore performed to investigate the pathological role of infiltrating immune cells in the kidney in hypertension and renal disease. Pharmacological and genetic studies indicate that immune cell infiltration into the kidney amplifies the disease process. Further experiments demonstrated that infiltrating T cells may accentuate the Dahl SS phenotype by increasing intrarenal ANG II and oxidative stress. From these and other data, we hypothesize that infiltrating immune cells, which surround the blood vessels and tubules, can serve as a local source of bioactive molecules which mediate vascular constriction, increase tubular sodium reabsorption, and mediate the retention of sodium and water to amplify sodium-sensitive hypertension. Multiple experiments remain to be performed to refine and clarify this hypothesis.

Original languageEnglish (US)
Pages (from-to)F499-F508
JournalAmerican Journal of Physiology - Renal Physiology
Volume307
Issue number5
DOIs
StatePublished - Sep 1 2014
Externally publishedYes

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Renal Hypertension
Salts
Kidney
Sodium
Wounds and Injuries
Hypertension
Blood Vessels
Inbred Dahl Rats
T-Lymphocytes
Kidney Diseases
Vascular Diseases
Constriction
Albumins
Immune System
Immunity
Oxidative Stress
Cardiovascular Diseases
Pharmacology
Diet
Inflammation

Keywords

  • Hypertension
  • Infiltrating immune cells

ASJC Scopus subject areas

  • Physiology
  • Urology

Cite this

Infiltrating immune cells in the kidney in salt-sensitive hypertension and renal injury. / Mattson, David L.

In: American Journal of Physiology - Renal Physiology, Vol. 307, No. 5, 01.09.2014, p. F499-F508.

Research output: Contribution to journalReview article

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