Hypertensive effects of transforming growth factor-β1 in vascular smooth muscles cells from spontaneously hypertensive rats are mediated by sulfatase 2

Cytokine ◽  
2022 ◽  
Vol 150 ◽  
pp. 155754
Author(s):  
Hee Sun Kim ◽  
Hye Young Kim
Keyword(s):  
Growth Factor ◽  
Spontaneously Hypertensive Rats ◽  
Transforming Growth Factor ◽  
Smooth Muscles ◽  
Transforming Growth Factor Β1 ◽  
Vascular Smooth Muscles ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive

scholarly journals THE EFFECTS OF LEPTIN ADMINISTRATION ON RENAL FUNCTION IN SPONTANEOUSLY HYPERTENSIVE RATS

2016 ◽  
Vol 10 (1) ◽  
pp. 108
Author(s):  
Brinnell Annette Caszo ◽  
Azdayanti Muslim ◽  
Zanariah Awang ◽  
Effat Omar ◽  
Effendi Ibrahim ◽  
...  
Keyword(s):  
Renal Function ◽  
Growth Factor ◽  
Mrna Expression ◽  
Spontaneously Hypertensive Rats ◽  
Transforming Growth Factor ◽  
Morphological Changes ◽  
Transforming Growth Factor Β1 ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive ◽  
Tgf Β1

ABSTRACTObjective: Elevated levels of leptin may be responsible directly for progression and severity of renal disease in obesity and hypertension. It may exertits effects by promoting fibrosis through the actions of transforming growth factor-β1 (TGF-β1) and the Smad pathway. This study determines theeffect of leptin administration on the development of renal fibrosis in nonobese spontaneously hypertensive rats (SHRs).Methods: Male SHRs, aged 12-14 weeks, were injected with either leptin (60 µg/kg/day) or saline (for the control group) subcutaneously daily for42 days. At the end of the experimental period, animals were euthanized and their kidneys were removed. The right kidney was harvested for thedetermination of messenger ribonucleic acid (mRNA) expression of TGF-β1, Smad2, Smad3, and bone morphogenic protein 7 (BMP7). The left kidneyswere stored in neutral buffered 10% formalin until they were processed and stained with hematoxylin and eosin. Prepared slides were examinedunder light microscopy. 30 consecutive glomeruli were examined for the cell counts based on the number of nuclei seen and the total area of glomeruli.Results: No significant difference was evident in renal function between control and leptin-treated rats. Cellularity and area of glomeruli were also notdifferent between the two groups. mRNA expression of TGF-β1, Smad2, and BMP7 were, however, higher in leptin-treated rats.Conclusion: It appears that 6 weeks of leptin administration increases renal TGF-β1 and Smad2 levels but with little morphological changes in thekidney. Whether the elevated BMP7 expression was responsible for lack of effect of leptin on renal morphological changes remains unclear.Keywords: Leptin, Renal function, Hypertension, Glomerulus, Transforming growth factor-β1, Smad, Spontaneously hypertensive rats.

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