1
|
Ding XF, Sun M, Guan FX, Guo LN, Zhang YY, Wan YD, Zhang XJ, Yu YW, Ma SS, Yao HM, Yao R, Zhang RF, Sun TW, Kan QC. Prenatal Exposure to LPS Alters The Intrarenal RAS in Offspring, Which Is Ameliorated by Adipose Tissue-Derived Mesenchymal Stem Cells. Am J Hypertens 2017; 30:1211-1219. [PMID: 28992100 DOI: 10.1093/ajh/hpx117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 06/22/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Prenatal lipopolysaccharide (LPS) exposure causes hypertension in rat offspring through an unknown mechanism. Here, we investigated the role of the intrarenal renin-angiotensin system (RAS) in hypertension induced by prenatal LPS exposure and also explored whether adipose tissue-derived mesenchymal stem cells (ADSCs) can ameliorate the effects of prenatal LPS exposure in rat offspring. METHODS Sixty-four pregnant rats were randomly divided into 4 groups (n = 16 in each), namely, a control group and an LPS group, which were intraperitoneally injected with vehicle and 0.79 mg/kg LPS, respectively, on the 8th, 10th, and 12th days of gestation; an ADSCs group, which was intravenously injected with 1.8 × 107 ADSCs on the 8th, 10th, and 12th days of gestation; and an LPS + ADSCs group, which received a combination of the treatments administered to the LPS and ADSCs groups. RESULTS Prenatal LPS exposure increased blood pressure, Ang II expression, Ang II-positive, monocyte and lymphocyte, apoptotic cells in the kidney, and induced renal histological changes in offspring; however, the LPS and control groups did not differ significantly with respect to plasma renin activity levels, Ang II levels, or renal function. ADSCs treatment attenuated the blood pressure and also ameliorated the other effects of LPS-treated adult offspring. CONCLUSIONS Prenatal exposure to LPS activates the intrarenal RAS but not the circulating RAS and thus induces increases in blood pressure in adult offspring; however, ADSCs treatment attenuates the blood pressure increases resulting from LPS exposure and also ameliorates the other phenotypic changes induced by LPS treatment by inhibiting intrarenal RAS activation.
Collapse
Affiliation(s)
- Xian-Fei Ding
- Department of General ICU, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Critical Care Medicine, Zhengzhou, Henan, China
| | - Mou Sun
- Department of General ICU, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Critical Care Medicine, Zhengzhou, Henan, China
| | - Fang-Xia Guan
- Stem Cell Laboratory, School of Life Sciences of Zhengzhou University, Zhengzhou, Henan, China
| | - Li-Na Guo
- Department of Gerontology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yan-Yan Zhang
- Department of General ICU, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Critical Care Medicine, Zhengzhou, Henan, China
| | - You-Dong Wan
- Department of General ICU, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Critical Care Medicine, Zhengzhou, Henan, China
| | - Xiao-Juan Zhang
- Department of General ICU, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Critical Care Medicine, Zhengzhou, Henan, China
| | - Yan-Wu Yu
- Department of General ICU, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Critical Care Medicine, Zhengzhou, Henan, China
| | - Shan-Shan Ma
- Stem Cell Laboratory, School of Life Sciences of Zhengzhou University, Zhengzhou, Henan, China
| | - Hai-Mu Yao
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Rui Yao
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Rui-Fang Zhang
- Department of Ultrasonography, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Tong-Wen Sun
- Department of General ICU, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Critical Care Medicine, Zhengzhou, Henan, China
| | - Quan-Cheng Kan
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| |
Collapse
|
3
|
Hao XQ, Zhang HG, Li SH, Jia Y, Liu Y, Zhou JZ, Wei YL, Hao LY, Tang Y, Su M, Li XH. Prenatal exposure to inflammation induced by zymosan results in activation of intrarenal renin-angiotensin system in adult offspring rats. Inflammation 2011; 33:408-14. [PMID: 20229032 DOI: 10.1007/s10753-010-9199-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Prenatal exposure to inflammation produces offspring that are hypertensive in adulthood. The present study was to explore the role of intrarenal renin-angiotensin (Ang) system in the development of hypertension programmed by prenatal exposure to zymosan. Pregnant rats were randomly divided into control group and zymosan group (n = 6). Rats in these two groups were administered intraperitoneally with 0.5 ml vehicle and 2.37 mg/kg zymosan, respectively, on the eighth, tenth, and 12th day during gestation. The results showed the glomerular number and creatinine clearance rate decreased significantly in offspring of zymosan-treated rats. The renal cortex renin mRNA expression, Ang II-positive cells in renal cortex, and Ang II expression in renal medulla increased significantly in offspring of zymosan-treated rats at 7, 16, and 25 weeks of age. The plasma renin activity and Ang II concentration were unchanged. In conclusion, prenatal exposure to zymosan resulted in the activation of intrarenal renin-Ang system in adult offspring rats.
Collapse
Affiliation(s)
- Xue-Qin Hao
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
4
|
Kondo N, Kiyomoto H, Yamamoto T, Miyatake A, Sun GP, Rahman M, Hitomi H, Moriwaki K, Hara T, Kimura S, Abe Y, Kohno M, Nishiyama A. Effects of calcium channel blockade on angiotensin II-induced peritubular ischemia in rats. J Pharmacol Exp Ther 2005; 316:1047-52. [PMID: 16319305 DOI: 10.1124/jpet.105.095331] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Recent studies have indicated that derangement of peritubular capillary (PTC) circulation with consequent tubulointerstitial hypoxia plays a pivotal role in the pathogenesis of renal injury. The present study was performed to determine whether azelnidipine, a new dihydropyridine calcium channel blocker, attenuates angiotensin II (AngII)-induced peritubular ischemia in anesthetized rats. The superficial PTCs were visualized directly using an intravital fluorescence videomicroscope system, and the PTC blood flow was evaluated by analyzing the velocity of fluorescein isothiocyanate-labeled erythrocytes. Intravenous infusion of AngII (50 ng/kg/min, 10 min) significantly increased mean arterial pressure (MAP) and renal vascular resistance (RVR) (by 35 +/- 3% and 110 +/- 32%, respectively), and decreased total renal blood flow (RBF) and PTC erythrocyte velocity (by -34 +/- 4 and -37 +/- 1%, respectively). Treatment with azelnidipine (5 microg/kg/min i.v., 10 min) had no effect on basal MAP, RBF, RVR, or PTC erythrocyte velocity. However, azelnidipine markedly attenuated the AngII-induced increases in MAP (7 +/- 3%) and RVR (40 +/- 4%) and decreases in RBF (-24 +/- 1%) and PTC erythrocyte velocity (-22 +/- 1%). Similar attenuation in the AngII-induced responses of MAP, RBF, RVR, and PTC erythrocyte velocity were observed in rats treated with a higher dose of azelnidipine (20 microg/kg/min i.v., 10 min), which significantly decreased basal MAP and RVR and increased RBF and PTC erythrocyte velocity. These data suggest that calcium channel blockade attenuates AngII-induced peritubular ischemia, which may be involved in its beneficial effects on renal injury.
Collapse
Affiliation(s)
- Naoki Kondo
- Second Department of Internal Medicine, Kagawa University Medical School, Kagawa, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
5
|
Rahman M, Kimura S, Nishiyama A, Hitomi H, Zhang G, Abe Y. Angiotensin II stimulates superoxide production via both angiotensin AT1A and AT1B receptors in mouse aorta and heart. Eur J Pharmacol 2004; 485:243-9. [PMID: 14757147 DOI: 10.1016/j.ejphar.2003.11.074] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The present study was conducted to determine the roles of angiotensin AT(1A) and AT(1B) receptors in angiotensin II-induced superoxide anion production in mouse aorta and heart. Superoxide anion production in aorta was determined by the lucigenin chemiluminescence method, and thiobarbituric acid reactive substances in heart tissues were measured by biochemical assay. The basal production rate of superoxide anion in aorta of wild type (WT) mice was significantly higher than in angiotensin AT(1A) receptor knockout (AT(1A) KO) mice. Angiotensin II (2.8 mg/kg/day, s.c. for 13 days) significantly increased superoxide anion production in aorta of both AT(1A) KO and WT mice. However, the superoxide anion production rate in aorta of angiotensin II-infused AT(1A) KO mice was significantly lower than in angiotensin II-infused WT mice. Valsartan (40 mg/kg/day in drinking water) prevented angiotensin II-induced superoxide anion production in aorta of WT and AT(1A) KO mice. Similarly, thiobarbituric acid reactive substances levels in heart tissues of angiotensin II-treated WT and AT(1A) KO mice were significantly higher than those in vehicle-infused WT and AT(1A) KO mice, respectively. Valsartan prevented angiotensin II-induced increases of thiobarbituric acid reactive substances levels in heart tissue of both WT and AT(1A) KO mice. These results indicate that angiotensin II stimulates superoxide anion production via both angiotensin AT(1A) and AT(1B) receptors, and that angiotensin AT(1A) receptors appear to play a predominant role in angiotensin II-induced superoxide anion production in mouse aorta and heart.
Collapse
Affiliation(s)
- Matlubur Rahman
- Department of Pharmacology, Kagawa Medical University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa 61-0793, Japan.
| | | | | | | | | | | |
Collapse
|