TGF-β1 DNA polymorphisms, protein levels, and blood pressure

Baogui Li, Ashwani Khanna, Vijay Sharma, Tejinder Singh, Manikkam Suthanthiran, Phyllis August

Research output: Contribution to journalArticle

136 Citations (Scopus)

Abstract

Transforming growth factor-β1 (TGF-β1), a multifunctional cytokine with fibrogenic properties, has been implicated in the pathogenesis of the vascular and target organ complications of hypertension. TGF-β1 may also regulate blood pressure via stimulation of endothelin-1 and/or renin secretion. Herein we explored the hypothesis that circulating levels of TGF- β1 protein (quantified using a TGF-β1-specific sandwich ELISA) are correlates of blood pressure levels. This hypothesis was tested in 98 stable end-stage renal disease (ESRD) patients. (The use of ESRD patients as the study cohort eliminates renal function-dependent alterations in circulating levels of TGF-β1 protein.) In addition, in view of the previously reported correlation among TGF-β1 DNA polymorphisms and systolic blood pressure, TGF-β1 codon 25 genotype and alleles were identified in 71 hypertensive subjects and 57 normotensives using amplification refractory mutation system polymerase chain reaction. Our studies demonstrate for the first time that TGF-β1 levels (209±13 ng/mL, mean±SEM) are positive correlates (Pearson correlation analysis) of mean arterial pressure (P=0.008), systolic pressure (P=0.02), and diastolic pressure (P=0.01). We also report that a higher percentage of hypertensives (92%) compared with normotensives (86%) are homozygous for the arginine allele at codon 25. Our observations support the idea that genetically determined TGF-β1 protein concentrations may play a role in blood pressure regulation in humans.

Original languageEnglish
Pages (from-to)271-275
Number of pages5
JournalHypertension
Volume33
Issue number1 II
Publication statusPublished - 1 Jan 1999
Externally publishedYes

Fingerprint

Transforming Growth Factors
Blood Pressure
DNA
Proteins
Codon
Chronic Kidney Failure
Alleles
Endothelin-1
Renin
Blood Vessels
Arginine
Arterial Pressure
Cohort Studies
Enzyme-Linked Immunosorbent Assay
Genotype
Cytokines
Hypertension
Kidney
Polymerase Chain Reaction
Mutation

Keywords

  • Gene polymorphism
  • Renal disease
  • Transforming growth factor-β

ASJC Scopus subject areas

  • Internal Medicine

Cite this

Li, B., Khanna, A., Sharma, V., Singh, T., Suthanthiran, M., & August, P. (1999). TGF-β1 DNA polymorphisms, protein levels, and blood pressure. Hypertension, 33(1 II), 271-275.

TGF-β1 DNA polymorphisms, protein levels, and blood pressure. / Li, Baogui; Khanna, Ashwani; Sharma, Vijay; Singh, Tejinder; Suthanthiran, Manikkam; August, Phyllis.

In: Hypertension, Vol. 33, No. 1 II, 01.01.1999, p. 271-275.

Research output: Contribution to journalArticle

Li, B, Khanna, A, Sharma, V, Singh, T, Suthanthiran, M & August, P 1999, 'TGF-β1 DNA polymorphisms, protein levels, and blood pressure', Hypertension, vol. 33, no. 1 II, pp. 271-275.
Li B, Khanna A, Sharma V, Singh T, Suthanthiran M, August P. TGF-β1 DNA polymorphisms, protein levels, and blood pressure. Hypertension. 1999 Jan 1;33(1 II):271-275.
Li, Baogui ; Khanna, Ashwani ; Sharma, Vijay ; Singh, Tejinder ; Suthanthiran, Manikkam ; August, Phyllis. / TGF-β1 DNA polymorphisms, protein levels, and blood pressure. In: Hypertension. 1999 ; Vol. 33, No. 1 II. pp. 271-275.
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