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Ma K, Zhang C, Zhang H, An C, Li G, Cheng L, Li M, Ren M, Bai Y, Liu Z, Ji S, Liu X, Gao J, Zhang Z, Wu X, Chen X. High-Salt Diet Accelerates Neuron Loss and Anxiety in APP/PS1 Mice Through Serpina3n. Int J Mol Sci 2024; 25:11731. [PMID: 39519278 PMCID: PMC11546851 DOI: 10.3390/ijms252111731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2024] [Revised: 10/29/2024] [Accepted: 10/29/2024] [Indexed: 11/16/2024] Open
Abstract
High salt (HS) consumption is an independent risk factor for neurodegenerative diseases such as dementia, stroke, and cerebral small vessel disease related to cognitive decline. Recently, Alzheimer's disease-like pathology changes have been reported as consequences of a HS diet in wild-type (wt) mice. However, it has not been revealed how HS diets accelerate the progress of Alzheimer's disease (AD) in APP/PS1 mice. Here, we fed APP/PS1 mice a HS diet or normal diet (ND) for six months; the effects of the HS/ND on wt mice were also observed. The results of our behavior test reveal that the HS diet exacerbates anxiety, β-amyloid overload, neuron loss, and synapse damage in the hippocampi of APP/PS1 mice; this was not observed in HS-treated wt mice. RNA sequencing shows that nearly all serpin family members were increased in the hippocampus of HS-treated APP/PS1 mice. Gene function analysis showed that a HS diet induces neurodegeneration, including axon dysfunction and neuro-ligand-based dysfunction, and regulates serine protein inhibitor activities. The mRNA and protein levels of Serpina3n were dramatically increased. Upregulated Serpina3n may be the key for β-amyloid aggregation and neuronal loss in the hippocampus of HS-treated APP/PS1 mice. Serpina3n inhibition attenuated the anxiety and increased the number of neurons in the hippocampal CA1(cornu ammonis) region of APP/PS1 mice. Our study provides novel insights into the mechanisms by which excessive HS diet deteriorates anxiety in AD mice. Therefore, decreasing daily dietary salt consumption constitutes a pivotal public health intervention for mitigating the progression of neuropathology, especially for old patients and those with neurodegenerative disease.
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Affiliation(s)
- Kaige Ma
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
- Key Laboratory of Ministry of Education for Environment and Genes Related to Diseases, Xi’an Jiaotong University, Xi’an 710061, China
| | - Chenglin Zhang
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
| | - Hanyue Zhang
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
- Key Laboratory of Ministry of Education for Environment and Genes Related to Diseases, Xi’an Jiaotong University, Xi’an 710061, China
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China
| | - Chanyuan An
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
| | - Ge Li
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
| | - Lixue Cheng
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
- Key Laboratory of Ministry of Education for Environment and Genes Related to Diseases, Xi’an Jiaotong University, Xi’an 710061, China
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China
| | - Mai Li
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
| | - Minghe Ren
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
| | - Yudan Bai
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
- Key Laboratory of Ministry of Education for Environment and Genes Related to Diseases, Xi’an Jiaotong University, Xi’an 710061, China
| | - Zichang Liu
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
| | - Shengfeng Ji
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
| | - Xiyue Liu
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
| | - Jinman Gao
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
| | - Zhichao Zhang
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
| | - Xiaolin Wu
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China
- Institute of Neuroscience, Translational Medicine Institute, Xi’an Jiaotong University, Xi’an 710061, China
| | - Xinlin Chen
- Department/Institute of Neurobiology, School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an 710061, China; (K.M.); (C.Z.); (H.Z.); (C.A.); (G.L.); (L.C.); (M.L.); (M.R.); (Y.B.); (Z.L.); (S.J.); (X.L.); (J.G.); (Z.Z.)
- Key Laboratory of Ministry of Education for Environment and Genes Related to Diseases, Xi’an Jiaotong University, Xi’an 710061, China
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Ramachandran CD, Gholami K, Lam SK, Hoe SZ. Effects of a high-salt diet on MAP and expression levels of renal ENaCs and aquaporins in SHR. Exp Biol Med (Maywood) 2023; 248:1768-1779. [PMID: 37828834 PMCID: PMC10792424 DOI: 10.1177/15353702231198085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 06/05/2023] [Indexed: 10/14/2023] Open
Abstract
An increase in blood pressure by a high-salt (HS) diet may change the expression levels of renal epithelial sodium channels (ENaCs) and aquaporins (AQPs). Spontaneously hypertensive rats (SHRs) and Wistar Kyoto (WKY) rats were exposed to HS and regular-salt (RS) diets for 6 weeks. Mean arterial pressure (MAP) and plasma atrial natriuretic peptide (ANP), angiotensin II (Ang II), aldosterone, and arginine vasopressin (AVP) levels were determined. Expression of mRNA levels of ENaCs and AQPs were quantified by real-time PCR. The MAP was higher in SHRs on the HS diet. Plasma Ang II and aldosterone levels were low while plasma ANP level was high in both strains of rats. Renal expression of mRNA levels of α-, β-, and γ-ENaCs was lowered in SHRs on the HS diet. Meanwhile, renal AQP1, AQP2, and AQP7 mRNA expression levels were lowered in both strains of rats on the HS diet. Suppression of mRNA expression levels of ENaC and AQP subunits suggests that the high-salt-induced increase in the MAP of SHR may not be solely due to renal sodium and water retention.
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Affiliation(s)
| | - Khadijeh Gholami
- Department of Physiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia
- Department of Endocrinology, Diabetes and Hypertension, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Sau-Kuen Lam
- Department of Physiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia
- Department of Pre-Clinical Sciences, Faculty of Medicine & Health Sciences, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
| | - See-Ziau Hoe
- Department of Physiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia
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Chen Y, Jiang W, Liu X, Du Y, Liu L, Ordovas JM, Lai CQ, Shen L. Curcumin supplementation improves heat-stress-induced cardiac injury of mice: physiological and molecular mechanisms. J Nutr Biochem 2020; 78:108331. [DOI: 10.1016/j.jnutbio.2019.108331] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 10/13/2019] [Accepted: 12/20/2019] [Indexed: 12/21/2022]
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Quek KJ, Ameer OZ, Phillips JK. AT1 Receptor Antagonism Improves Structural, Functional, and Biomechanical Properties in Resistance Arteries in a Rodent Chronic Kidney Disease Model. Am J Hypertens 2018; 31:696-705. [PMID: 29425281 DOI: 10.1093/ajh/hpy021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 02/06/2018] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The renin-angiotensin system, in particular Angiotensin II (AngII), plays a significant role in the pathogenesis of hypertension in chronic kidney disease (CKD). Effects of chronic AT1 receptor antagonism were investigated in a genetic hypertensive rat model of CKD, the Lewis polycystic kidney (LPK) rat. METHODS Mixed-sex LPK and Lewis control rats (total n = 31) were split between treated (valsartan 60 mg/kg/day p.o. from 4 to 18 weeks) and vehicle groups. Animals were assessed for systolic blood pressure and urine biochemistry, and after euthanasia, blood collected for urea and creatinine analysis, confirming the hypertensive and renal phenotype. Mesenteric resistance vasculature was assessed using pressure myography and histology. RESULTS Valsartan treatment improved vascular structure in LPK rats, increasing internal and external diameter values and reducing wall thickness (untreated vs. treated LPK: 53.19 ± 3.29 vs. 33.93 ± 2.17 μm) and wall-lumen ratios (untreated vs. treated LPK: 0.52 ± 0.09 vs. 0.16 ± 0.01, all P < 0.0001). Endothelium dysfunction, as measured by maximal response to acetylcholine (Rmax), was normalized with treatment (untreated vs. treated LPK: 69.56 ± 4.34 vs. 103.05 ± 4.13, P < 0.05), increasing the relative contributions of nitric oxide and endothelium-derived hyperpolarization to vasorelaxation while downregulating the prostanoid contribution. Biomechanical properties also improved with treatment, as indicated by an increase in compliance, decrease in intrinsic stiffness and alterations in the artery wall composition, which included decreases in collagen density and collagen/elastin ratio. CONCLUSIONS Our results highlight the importance of AngII as a driver of resistance vessel structural, functional, and biomechanical dysfunction and provide insight as to how AT1 receptor blockade exerts therapeutic efficacy in CKD.
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Affiliation(s)
- Ko Jin Quek
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia
| | - Omar Z Ameer
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia
- Colleges of Medicine and Pharmacy, Alfaisal University, Riyadh, Kingdom of Saudi Arabia
| | - Jacqueline K Phillips
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia
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Ge Q, Wang Z, Wu Y, Huo Q, Qian Z, Tian Z, Ren W, Zhang X, Han J. High salt diet impairs memory-related synaptic plasticity via increased oxidative stress and suppressed synaptic protein expression. Mol Nutr Food Res 2017; 61. [PMID: 28654221 PMCID: PMC5656827 DOI: 10.1002/mnfr.201700134] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 05/03/2017] [Accepted: 06/02/2017] [Indexed: 12/27/2022]
Abstract
Scope A high salt (HS) diet is detrimental to cognitive function, in addition to having a role in cardiovascular disorders. However, the method by which an HS diet impairs cognitive functions such as learning and memory remains open. Methods and results In this study, we found that mice on a 7 week HS diet demonstrated disturbed short‐term memory in an object‐place recognition task, and both 4 week and 7 week HS treatments impaired long‐term memory, as evidenced in a fear conditioning test. Mechanistically, the HS diet inhibited memory‐related long‐term potentiation (LTP) in the hippocampus, while also increasing the levels of reactive oxygen species (ROS) in hippocampal cells and downregulating the expression of synapsin I, synaptophysin, and brain‐derived neurotrophic factor in specific encephalic region. Conclusion This suggests that oxidative stress or synaptic protein/neurotrophin deregulation was involved in the HS diet‐induced memory impairment. Thus, the present study provides novel insights into the mechanisms of memory impairment caused by excessive dietary salt, and underlined the importance of controlling to salt absorb quantity.
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Affiliation(s)
- Qian Ge
- Key Laboratory of Modern Teaching Technology, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - Zhengjun Wang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Yuwei Wu
- Key Laboratory of Modern Teaching Technology, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - Qing Huo
- Key Laboratory of Modern Teaching Technology, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - Zhaoqiang Qian
- Key Laboratory of Modern Teaching Technology, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - Zhongmin Tian
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Wei Ren
- Key Laboratory of Modern Teaching Technology, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - Xia Zhang
- Key Laboratory of Modern Teaching Technology, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - Jing Han
- Key Laboratory of Modern Teaching Technology, Shaanxi Normal University, Xi'an, Shaanxi, China
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Chang SY, Lo CS, Zhao XP, Liao MC, Chenier I, Bouley R, Ingelfinger JR, Chan JS, Zhang SL. Overexpression of angiotensinogen downregulates aquaporin 1 expression via modulation of Nrf2-HO-1 pathway in renal proximal tubular cells of transgenic mice. J Renin Angiotensin Aldosterone Syst 2016; 17:17/3/1470320316668737. [PMID: 27638854 PMCID: PMC5843896 DOI: 10.1177/1470320316668737] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 08/05/2016] [Indexed: 12/14/2022] Open
Abstract
Introduction: We aimed to examine the regulation of aquaporin 1 expression in an angiotensinogen transgenic mouse model, focusing on underlying mechanisms. Methods: Male transgenic mice overexpressing rat angiotensinogen in their renal proximal tubular cells (RPTCs) and rat immortalised RPTCs stably transfected with rat angiotensinogen cDNA were used. Results: Angiotensinogen-transgenic mice developed hypertension and nephropathy, changes that were either partially or completely attenuated by treatment with losartan or dual renin–angiotensin system blockade (losartan and perindopril), respectively, while hydralazine prevented hypertension but not nephropathy. Decreased expression of aquaporin 1 and heme oxygenase-1 and increased expression of nuclear factor erythroid 2-related factor 2 (Nrf2) and sodium–hydrogen exchanger 3 were observed in RPTCs of angiotensinogen-transgenic mice and in angiotensinogen-transfected immortalised RPTCs. These parameters were normalised by dual renin–angiotensin system blockade. Both in vivo and in vitro studies identified a novel mechanism in which angiotensinogen overexpression in RPTCs enhances the cytosolic accumulation of Nrf2 via the phosphorylation of pGSK3β Y216. Consequently, lower intranuclear Nrf2 levels are less efficient to trigger heme oxygenase-1 expression as a defence mechanism, which subsequently diminishes aquaporin 1 expression in RPTCs. Conclusions: Angiotensinogen-mediated downregulation of aquaporin 1 and Nrf2 signalling may play an important role in intrarenal renin–angiotensin system-induced hypertension and kidney injury.
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Affiliation(s)
- Shiao-Ying Chang
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Canada
| | - Chao-Sheng Lo
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Canada
| | - Xin-Ping Zhao
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Canada
| | - Min-Chun Liao
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Canada
| | - Isabelle Chenier
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Canada
| | - Richard Bouley
- Division of Nephology, Massachusetts General Hospital and Harvard Medical School, USA
| | - Julie R Ingelfinger
- Pediatric Nephrology Unit, Massachusetts General Hospital and Harvard Medical School, USA
| | - John Sd Chan
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Canada
| | - Shao-Ling Zhang
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Canada
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