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Dixon S, O'connor AT, Brooks-Noreiga C, Clark MA, Levy A, Castejon AM. Role of renin angiotensin system inhibitors and metformin in Glioblastoma Therapy: a review. Cancer Chemother Pharmacol 2024; 94:1-23. [PMID: 38914751 DOI: 10.1007/s00280-024-04686-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 06/13/2024] [Indexed: 06/26/2024]
Abstract
Glioblastoma multiforme (GBM) is a highly aggressive and incurable disease accounting for about 10,000 deaths in the USA each year. Despite the current treatment approach which includes surgery with chemotherapy and radiation therapy, there remains a high prevalence of recurrence. Notable improvements have been observed in persons receiving concurrent antihypertensive drugs such as renin angiotensin inhibitors (RAS) or the antidiabetic drug metformin with standard therapy. Anti-tumoral effects of RAS inhibitors and metformin have been observed in in vitro and in vivo studies. Although clinical trials have shown mixed results, the potential for the use of RAS inhibitors and metformin as adjuvant GBM therapy remains promising. Nevertheless, evidence suggest that these drugs exert multimodal antitumor actions; by particularly targeting several cancer hallmarks. In this review, we highlight the results of clinical studies using multidrug cocktails containing RAS inhibitors and or metformin added to standard therapy for GBM. In addition, we highlight the possible molecular mechanisms by which these repurposed drugs with an excellent safety profile might elicit their anti-tumoral effects. RAS inhibition elicits anti-inflammatory, anti-angiogenic, and immune sensitivity effects in GBM. However, metformin promotes anti-migratory, anti-proliferative and pro-apoptotic effects mainly through the activation of AMP-activated protein kinase. Also, we discussed metformin's potential in targeting both GBM cells as well as GBM associated-stem cells. Finally, we summarize a few drug interactions that may cause an additive or antagonistic effect that may lead to adverse effects and influence treatment outcome.
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Affiliation(s)
- Sashana Dixon
- Barry and Judy Silverman College of Pharmacy, Nova Southeastern University, Ft. Lauderdale, FL, USA.
| | - Ann Tenneil O'connor
- Barry and Judy Silverman College of Pharmacy, Nova Southeastern University, Ft. Lauderdale, FL, USA
| | - Chloe Brooks-Noreiga
- Halmos College of Arts and Sciences, Nova Southeastern University, Ft. Lauderdale, FL, USA
| | - Michelle A Clark
- Barry and Judy Silverman College of Pharmacy, Nova Southeastern University, Ft. Lauderdale, FL, USA
| | - Arkene Levy
- Dr. Kiran C. Patel College of Allopathic Medicine, Nova Southeastern University, Ft. Lauderdale, FL, USA
| | - Ana M Castejon
- Barry and Judy Silverman College of Pharmacy, Nova Southeastern University, Ft. Lauderdale, FL, USA
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Lin X, Wang X, Feng W, Wan Y, Chai J, Li F, Xu M. The Counteracting Effects of Ang II and Ang-(1-7) on the Function andGrowth of Insulin-secreting NIT-1 Cells. Curr Diabetes Rev 2024; 20:e010124225112. [PMID: 38173074 DOI: 10.2174/0115733998276291231204115314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/17/2023] [Accepted: 10/23/2023] [Indexed: 01/05/2024]
Abstract
INTRODUCTION China now has the highest number of diabetes in the world. Angiotensin II (Ang II) causes insulin resistance by acting on the insulin signaling pathway of peripheral target tissues. However, its effect on islet β-cells remains unclear. The possible role of Angiotensin-( 1-7) [Ang-(1-7)] as an antagonist to the effects of Ang II and in treating diabetes needs to be elucidated. OBJECTIVES To assess the effects of Ang II and Ang-(1-7) on the function and growth of islet β cell line NIT-1, which is derived from the islets of non-obese diabetic/large T-antigen (NOD/LT) mice with insulinoma. METHODS NIT-1 cells were treated with Ang II, Ang-(1-7) and their respective receptor antagonists. The impact on cell function and growth was then evaluated. RESULTS Ang II significantly reduced insulin-stimulated IR-β-Tyr and Akt-Ser; while Ang-(1-7), saralasin (an Ang II receptor antagonist), and diphenyleneiodonium [DPI, a nicotinamide adenine dinucleotide phosphate oxidase (NOX) antagonist] reversed the inhibiting effect. Conversely, Ang II significantly increased insulin-stimulated intracellular H2O2 and P47 phox, while saralasin and DPI reverted the effect. Furthermore, Ang-(1-7) reduced the elevated concentrations of ROS and MDA while increasing the proliferation rate that was reduced by high glucose, all of which were reversed by A-779, an antagonist of the Mas receptor (MasR). CONCLUSION Angiotensin II poses a negative regulatory effect on insulin signal transduction, increases oxidative stress, and may inhibit the transcription of insulin genes stimulated by insulin in NIT-1 cells. Meanwhile, angiotensin-(1-7) blocked these effects via MasR. These results corroborate the rising potential of the renin-angiotensin system (RAS) in treating diabetes.
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Affiliation(s)
- Xiuhong Lin
- Department of Clinical Nutrition, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Xiaoyun Wang
- Department of Endocrinology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, Fujian, People's Republic of China
| | - Weilian Feng
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Yan Wan
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Jiani Chai
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Feng Li
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Mingtong Xu
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
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Villapol S, Janatpour ZC, Affram KO, Symes AJ. The Renin Angiotensin System as a Therapeutic Target in Traumatic Brain Injury. Neurotherapeutics 2023; 20:1565-1591. [PMID: 37759139 PMCID: PMC10684482 DOI: 10.1007/s13311-023-01435-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2023] [Indexed: 09/29/2023] Open
Abstract
Traumatic brain injury (TBI) is a major public health problem, with limited pharmacological options available beyond symptomatic relief. The renin angiotensin system (RAS) is primarily known as a systemic endocrine regulatory system, with major roles controlling blood pressure and fluid homeostasis. Drugs that target the RAS are used to treat hypertension, heart failure and kidney disorders. They have now been used chronically by millions of people and have a favorable safety profile. In addition to the systemic RAS, it is now appreciated that many different organ systems, including the brain, have their own local RAS. The major ligand of the classic RAS, Angiotensin II (Ang II) acts predominantly through the Ang II Type 1 receptor (AT1R), leading to vasoconstriction, inflammation, and heightened oxidative stress. These processes can exacerbate brain injuries. Ang II receptor blockers (ARBs) are AT1R antagonists. They have been shown in several preclinical studies to enhance recovery from TBI in rodents through improvements in molecular, cellular and behavioral correlates of injury. ARBs are now under consideration for clinical trials in TBI. Several different RAS peptides that signal through receptors distinct from the AT1R, are also potential therapeutic targets for TBI. The counter regulatory RAS pathway has actions that oppose those stimulated by AT1R signaling. This alternative pathway has many beneficial effects on cells in the central nervous system, bringing about vasodilation, and having anti-inflammatory and anti-oxidative stress actions. Stimulation of this pathway also has potential therapeutic value for the treatment of TBI. This comprehensive review will provide an overview of the various components of the RAS, with a focus on their direct relevance to TBI pathology. It will explore different therapeutic agents that modulate this system and assess their potential efficacy in treating TBI patients.
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Affiliation(s)
- Sonia Villapol
- Department of Neurosurgery, Houston Methodist Hospital, Houston, TX, USA
| | - Zachary C Janatpour
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD, 20814, USA
| | - Kwame O Affram
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD, 20814, USA
| | - Aviva J Symes
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD, 20814, USA.
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4
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Maleki M, Aliboroni A, Kheiri A, Kaffashian MR, Kheiry M. Association of the ACE2-Angiotensin1-7-Mas axis with lung damage caused by cigarette smoke exposure: a systematic review. REVIEWS ON ENVIRONMENTAL HEALTH 2023:reveh-2023-0028. [PMID: 37534601 DOI: 10.1515/reveh-2023-0028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 06/19/2023] [Indexed: 08/04/2023]
Abstract
Through the Mas receptor, angiotensin-(1-7) [Ang-(1-7)] has been shown to have a key role in the development of lung inflammation. This systematic review (SR) sought to identify the relationship between lung damage brought on by exposure to cigarette smoke (CS) and the ACE2-Ang-(1-7)-Mas pathway. In this investigation, relevant keywords were used to search PubMed (MEDLINE), Scopus (Elsevier), and Institute for Scientific Information (ISI) Web of Science up to December 2022. Nine studies were chosen because they satisfied the inclusion/exclusion criteria. The majority of research concluded that exposure to CS increased the risk of lung damage. Smoking cigarettes is the main cause of COPD because it causes massive amounts of reactive oxygen and nitrogen species to enter the lungs, which stimulate the production of inflammatory cytokines like IL-1 β, IL-6, and TNF-α, as well as the invasion of inflammatory cells like neutrophils and macrophages. These findings support the renin-angiotensin system's (RAS) involvement in the pathophysiology of smoking-induced damage. Additionally, via stimulating pro-inflammatory mediators, aberrant RAS activity has been linked to lung damage. Lung inflammation's etiology has been shown to be significantly influenced by the protective known RAS arm ACE2-Ang-(1-7)-Mas. In conclusion, these are important for informing policymakers to pass legislation limiting the use of smoking and other tobacco to prevent their harmful effects.
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Affiliation(s)
- Maryam Maleki
- Department of Physiology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Alireza Aliboroni
- Department of Physiology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Amin Kheiri
- Department of Endodontics, Faculty of Dentistry, Ilam University of Medical Sciences, Ilam, Iran
| | | | - Maryam Kheiry
- Non-Communicable Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran
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View of the Renin-Angiotensin System in Acute Kidney Injury Induced by Renal Ischemia-Reperfusion Injury. J Renin Angiotensin Aldosterone Syst 2022; 2022:9800838. [DOI: 10.1155/2022/9800838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 10/06/2022] [Accepted: 10/12/2022] [Indexed: 11/17/2022] Open
Abstract
Renal ischemia-reperfusion injury (RIRI) is a sequence of complicated events that is defined as a reduction of the blood supply followed by reperfusion. RIRI is the leading cause of acute kidney injury (AKI). Among the diverse mediators that take part in RIRI-induced AKI, the renin-angiotensin system (RAS) plays an important role via conventional (angiotensinogen, renin, angiotensin-converting enzyme (ACE), angiotensin (Ang) II, and Ang II type 1 receptor (AT1R)) and nonconventional (ACE2, Ang 1-7, Ang 1-9, AT2 receptor (AT2R), and Mas receptor (MasR)) axes. RIRI alters the balance of both axes so that RAS can affect RIRI-induced AKI. In overall, the alteration of Ang II/AT1R and AKI by RIRI is important to consider. This review has looked for the effects and interactions of RAS activities during RIRI conditions.
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6
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Zaman A, Banday AA. Angiotensin1-7 Protects Against Renal Ischemia-Reperfusion Injury via Regulating the Expression of NRF2 and microRNAs in Fisher 344 Rats. Am J Physiol Renal Physiol 2022; 323:F33-F47. [PMID: 35532070 DOI: 10.1152/ajprenal.00283.2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Ischemia/reperfusion (I/R) is considered the primary cause of acute kidney injury and is higher among older individuals. While ischemic episodes are hard to predict and prevent, detrimental ischemic effects could be mitigated by exogenous intervention. This study aims to identify the protective role of angiotensin (ANG)1-7 against I/R-induced renal injury in adult vs. aged rats. Adult and aged male Fisher 344 rats were subjected to 40-minute bilateral renal ischemia followed by 28-days reperfusion. ANG1-7 was administered intraperitoneally in ischemic rats for 28 days without or with Mas receptor antagonist A779. I/R increased blood pressure, plasma creatinine, urinary 8-isoprostane, and renal infiltration of pro and anti-inflammatory macrophages and reduced glomerular filtration rate in both adult and aged rats compared to shams. In addition to causing glomerular sclerosis and tubular damage, I/R increased the expression of pathogenic microRNAs (miRNAs): miR-20a-5p, miR-21-5p, miR-24-3p, and miR-194-5p in both the age groups. ANG1-7 treatment of ischemic rats mitigated oxidative stress and renal inflammation, restored renal structure and function, and reduced high blood pressure. Also, ANG1-7 suppressed the expression of pathogenic miRNAs. In addition, ANG1-7 treatment of I/R rats increased the expression of redox-sensitive transcription factor NRF2 and phase II antioxidant enzymes. The beneficial effects of ANG1-7 were sensitive to A779. Collectively, these data suggest that ANG1-7 associated with NRF2 activation could alleviate post-I/R-induced kidney injury and therefore serve as a potential therapeutic compound to protect against biochemical and morphological pathologies of I/R in both adults and aged populations.
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Affiliation(s)
- Asif Zaman
- Heart and Kidney Institute, College of Pharmacy, University of Houston, Houston, Texas, United States
| | - Anees Ahmad Banday
- Heart and Kidney Institute, College of Pharmacy, University of Houston, Houston, Texas, United States
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7
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Cardiorenal Disease in COVID-19 Patients. J Renin Angiotensin Aldosterone Syst 2022; 2022:4640788. [PMID: 35359461 PMCID: PMC8956393 DOI: 10.1155/2022/4640788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/28/2022] [Accepted: 03/09/2022] [Indexed: 12/21/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) is an illness caused by a novel coronavirus called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Mutations in the genetic coding and the variations in the spike proteins are critical for the virus's mechanism of facilitating fusion with the human host, making the disease more severe. Recent research indicates that comorbidities including diabetes, hypertension, renal disease, heart failure, and atherosclerosis play a significant role in the severity and high mortality rates of (COVID-19), suggesting that perhaps the metabolic syndrome and its components are associated with COVID-19 morbidity. Primarily, angiotensin-converting enzyme 2 (ACE2) receptor is identified as the entrance receptor of SARS-CoV-2. Increased ACE2 expression, endothelial dysfunction plays a vital role in the progression and severity of complications developed due to COVID-19. In this review, we will discuss the association and management of cardiorenal disease and COVID-19.
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8
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Long L, Zhang X, Wen Y, Li J, Wei L, Cheng Y, Liu H, Chu J, Fang Y, Xie Q, Shen A, Peng J. Qingda Granule Attenuates Angiotensin II-Induced Renal Apoptosis and Activation of the p53 Pathway. Front Pharmacol 2022; 12:770863. [PMID: 35222007 PMCID: PMC8867011 DOI: 10.3389/fphar.2021.770863] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 12/28/2021] [Indexed: 01/30/2023] Open
Abstract
Background: Qingda granules (QDG) exhibit antihypertension and multiple-target-organ protection. However, the therapeutic potential of QDG on hypertensive renal injury remains unknown. Therefore, the main objective of the current study is to explore the effects and underlying mechanisms of QDG treatment on renal injury in angiotensin (Ang) II-infused mice. Methods and results: Mice were infused with Ang II (500 ng/kg/min) or saline for 4 weeks with subcutaneously implanted osmotic pumps. After infusion, mice in the Ang II + QDG group were intragastrically administrated with QDG daily (1.145 g/kg/day), whereas the control group and Ang II group were intragastrically administrated with the same amount of double-distilled water. Blood pressure of the mice monitored using the CODA™ noninvasive blood pressure system revealed that QDG treatment significantly attenuated elevated blood pressure. Moreover, hematoxylin-eosin staining indicated that QDG treatment ameliorated Ang II-induced renal morphological changes, including glomerular sclerosis and atrophy, epithelial cell atrophy, and tubular dilatation. RNA-sequencing (RNA-seq) identified 662 differentially expressed transcripts (DETs) in renal tissues of Ang II-infused mice, which were reversed after QDG treatment. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis based on DETs in both comparisons of Ang II vs. Control and Ang II + QDG vs. Ang II identified multiple enriched pathways, including apoptosis and p53 pathways. Consistently, terminal deoxynucleotidyl transferase (TdT) dUTP nick-end labeling (TUNEL) staining and Annexin V staining revealed that QDG treatment significantly attenuated Ang II-induced cell apoptosis in renal tissues and cultured renal tubular epithelial cell lines (NRK-52E). Furthermore, western blot analysis indicated that Ang II infusion significantly upregulated the protein expression of p53, BCL2-associated X (BAX), cle-caspase-9, and cle-caspase-3, while downregulating the protein expression of BCL-2 in renal tissues, which were attenuated after QDG treatment. Conclusion: Collectively, QDG treatment significantly attenuated hypertensive renal injury, partially by attenuating renal apoptosis and suppressing p53 pathways, which might be the underlying mechanisms.
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Affiliation(s)
- Linzi Long
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China
| | - Xiuli Zhang
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou, China
| | - Ying Wen
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou, China
| | - Jiapeng Li
- Department of Physical Education, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Lihui Wei
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China
| | - Ying Cheng
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou, China
| | - Huixin Liu
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou, China
| | - Jianfeng Chu
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China
| | - Yi Fang
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China
| | - Qiurong Xie
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China
| | - Aling Shen
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China
| | - Jun Peng
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China
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Oliveira MMB, de Araújo AA, Ribeiro SB, de Sales Mota PCM, Marques VB, da Silva Martins Rebouças C, Figueiredo JG, Barra PB, de Castro Brito GA, de Carvalho Leitão RF, Guerra GCB, de Medeiros CACX. Losartan improves intestinal mucositis induced by 5-fluorouracil in mice. Sci Rep 2021; 11:23241. [PMID: 34853351 PMCID: PMC8636633 DOI: 10.1038/s41598-021-01969-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 11/01/2021] [Indexed: 02/07/2023] Open
Abstract
Intestinal mucositis (IM) is a common side effect of 5-fluorouracil (5-FU)-based chemotherapy, which negatively impacts therapeutic outcomes and delays subsequent cycles of chemotherapy resulting in dose reductions and treatment discontinuation. In search of new pharmacological alternatives that minimize your symptoms, this work set out to study the effect of losartan (LOS), a receptor type I (AT1) angiotensin II antagonist, on intestinal mucositis induced by 5-FU. Intestinal mucositis was induced by a single intraperitoneal administration of 5-FU (450 mg/kg) in Swiss mice. Losartan (5, 25 or 50 mg/kg) or saline was orally administered 30 min before 5-FU and daily for 4 days. On 4th day, the animals were euthanized and segments of small intestine were collected to evaluate histopathological alterations (morphometric analysis), concentration of inflammatory cytokines, oxidative stress markers and genic expression of NF-κB p65, Fn-14 and TWEAK. Weight evaluation and changes in leukogram were also analyzed. 5-FU induced intense weight loss, leukopenia and reduction in villus height compared to saline group. Losartan (50 mg/kg) prevented 5-FU-induced inflammation by decreasing in the analyzed parameters compared to the 5-FU group. Our findings suggest that 50 mg/kg of losartan prevents the effects of 5-FU on intestinal mucosa in mice.
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Affiliation(s)
| | - Aurigena Antunes de Araújo
- Post Graduate Program in Pharmaceutical Science, Post Graduate Program Dental Sciences, Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | - Susana Barbosa Ribeiro
- Junior Postdoctoral Student CNPq-Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | | | | | | | - Jozi Godoy Figueiredo
- Department of Biochemistry, Faculty of Vale do São Lourenço (EDUVALE), Jaciara, MT, Brazil
| | - Patrícia Batista Barra
- Post Graduate Program in Biology Teaching in National Network-PROFBIO, Department of Biomedical Sciences, State University of Rio Grande do Norte (UERN), Mossoró, RN, Brazil
| | - Gerly Anne de Castro Brito
- Post Graduate Program Morphofunctional Sciences, Post Graduate Program Medical Sciences, Department of Morphology, Faculty of Medicine, Federal University of Ceará (UFC), Fortaleza, CE, Brazil
| | - Renata Ferreira de Carvalho Leitão
- Post Graduate Program Morphofunctional Sciences, Department of Morphology, Faculty of Medicine, Federal University of Ceará (UFC), Fortaleza, CE, Brazil
| | - Gerlane Coelho Bernardo Guerra
- Post Graduate Program Biochemistry and Molecular Biology, Post Graduate Program Pharmaceutical Science, Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | - Caroline Addison Carvalho Xavier de Medeiros
- Post Graduate Program Biotechnology-RENORBIO, Post Graduate Program Biochemistry and Molecular Biology, Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil.
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10
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Shi S, Pan X, Feng H, Zhang S, Shi S, Lin W. Identification of transcriptomics biomarkers for the early prediction of the prognosis of septic shock from pneumopathies. BMC Infect Dis 2021; 21:1190. [PMID: 34836493 PMCID: PMC8619650 DOI: 10.1186/s12879-021-06888-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 11/19/2021] [Indexed: 11/21/2022] Open
Abstract
Background Identifying the biological subclasses of septic shock might provide specific targeted therapies for the treatment and prognosis of septic shock. It might be possible to find biological markers for the early prediction of septic shock prognosis. Methods The data were obtained from the Gene Expression Omnibus databases (GEO) in NCBI. GO enrichment and KEGG pathway analyses were performed to investigate the functional annotation of up- and downregulated DEGs. ROC curves were drawn, and their areas under the curves (AUCs) were determined to evaluate the predictive value of the key genes. Results 117 DEGs were obtained, including 36 up- and 81 downregulated DEGs. The AUC for the MME gene was 0.879, as a key gene with the most obvious upregulation in septic shock. The AUC for the THBS1 gene was 0.889, as a key downregulated gene with the most obvious downregulation in septic shock. Conclusions The upregulation of MME via the renin-angiotensin system pathway and the downregulation of THBS1 through the PI3K–Akt signaling pathway might have implications for the early prediction of prognosis of septic shock in patients with pneumopathies.
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Affiliation(s)
- Songchang Shi
- Department of Critical Care Medicine, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital South Branch, Fujian Provincial Hospital Jinshan Branch, Fuzhou, 350001, Fujian, People's Republic of China
| | - Xiaobin Pan
- Department of Critical Care Medicine, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital South Branch, Fujian Provincial Hospital Jinshan Branch, Fuzhou, 350001, Fujian, People's Republic of China
| | - Hangwei Feng
- Department of Critical Care Medicine, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital South Branch, Fujian Provincial Hospital Jinshan Branch, Fuzhou, 350001, Fujian, People's Republic of China
| | - Shujuan Zhang
- Department of Critical Care Medicine, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital South Branch, Fujian Provincial Hospital Jinshan Branch, Fuzhou, 350001, Fujian, People's Republic of China
| | - Songjing Shi
- Department of Critical Care Medicine, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, No.134 East Street, Gulou District, Fuzhou, 350001, Fujian, People's Republic of China.
| | - Wei Lin
- Department of Endocrinology, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, No.134 East Street, Gulou District, Fuzhou, 350001, Fujian, People's Republic of China.
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11
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Kawanami D, Takashi Y, Muta Y, Oda N, Nagata D, Takahashi H, Tanabe M. Mineralocorticoid Receptor Antagonists in Diabetic Kidney Disease. Front Pharmacol 2021; 12:754239. [PMID: 34790127 PMCID: PMC8591525 DOI: 10.3389/fphar.2021.754239] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 10/13/2021] [Indexed: 01/19/2023] Open
Abstract
Diabetic kidney disease (DKD) is a major cause of end-stage kidney disease (ESKD) worldwide. Mineralocorticoid receptor (MR) plays an important role in the development of DKD. A series of preclinical studies revealed that MR is overactivated under diabetic conditions, resulting in promoting inflammatory and fibrotic process in the kidney. Clinical studies demonstrated the usefulness of MR antagonists (MRAs), such as spironolactone and eplerenone, on DKD. However, concerns regarding their selectivity for MR and hyperkalemia have remained for these steroidal MRAs. Recently, nonsteroidal MRAs, including finerenone, have been developed. These agents are highly selective and have potent anti-inflammatory and anti-fibrotic properties with a low risk of hyperkalemia. We herein review the current knowledge and future perspectives of MRAs in DKD treatment.
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Affiliation(s)
- Daiji Kawanami
- Department of Endocrinology and Diabetes Mellitus, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Yuichi Takashi
- Department of Endocrinology and Diabetes Mellitus, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Yoshimi Muta
- Department of Endocrinology and Diabetes Mellitus, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Naoki Oda
- Department of Endocrinology and Diabetes Mellitus, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Dai Nagata
- Department of Endocrinology and Diabetes Mellitus, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Hiroyuki Takahashi
- Department of Endocrinology and Diabetes Mellitus, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Makito Tanabe
- Department of Endocrinology and Diabetes Mellitus, Fukuoka University School of Medicine, Fukuoka, Japan
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12
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Das UN. Bioactive lipid-based therapeutic approach to COVID-19 and other similar infections. Arch Med Sci 2021; 19:1327-1359. [PMID: 37732033 PMCID: PMC10507771 DOI: 10.5114/aoms/135703] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 04/11/2021] [Indexed: 09/22/2023] Open
Abstract
COVID-19 is caused by SARS-CoV-2 infection. Epithelial and T, NK, and other immunocytes release bioactive lipids especially arachidonic acid (AA) in response to microbial infections to inactivate them and upregulate the immune system. COVID-19 (coronavirus) and other enveloped viruses including severe acute respiratory syndrome (SARS-CoV-1 of 2002-2003) and Middle East respiratory syndrome (MERS; 2012-ongoing) and hepatitis B and C (HBV and HCV) can be inactivated by AA, γ-linolenic acid (GLA, dihomo-GLA (DGLA), eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), which are precursors to several eicosanoids. Prostaglandin E1, lipoxin A4, resolvins, protectins and maresins enhance phagocytosis of macrophages and leukocytes to clear debris from the site(s) of infection and injury, enhance microbial clearance and wound healing to restore homeostasis. Bioactive lipids modulate the generation of M1 and M2 macrophages and the activity of other immunocytes. Mesenchymal and adipose tissue-derived stem cells secrete LXA4 and other bioactive lipids to bring about their beneficial actions in COVID-19. Bioactive lipids regulate vasomotor tone, inflammation, thrombosis, immune response, inactivate enveloped viruses, regulate T cell proliferation and secretion of cytokines, stem cell survival, proliferation and differentiation, and leukocyte and macrophage functions, JAK kinase activity and neutrophil extracellular traps and thus, have a critical role in COVID-19.
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Affiliation(s)
- Undurti N. Das
- UND Life Sciences, Battle Ground, WA, USA
- Department of Medicine, Omega Hospitals, Gachibowli, Hyderabad, India
- International Research Centre, Biotechnologies of the third Millennium, ITMO University, Saint-Petersburg, Russia
- Department of Biotechnology, Indian Institute of Technology-Hyderabad, Telangana, India
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13
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Unnikrishnan V, Kastelic JP, Thundathil JC. Ouabain-induced activation of phospholipase C zeta and its contributions to bovine sperm capacitation. Cell Tissue Res 2021; 385:785-801. [PMID: 33885964 DOI: 10.1007/s00441-021-03455-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 03/22/2021] [Indexed: 11/30/2022]
Abstract
The sperm-derived oocyte activating factor, phospholipase C zeta (PLC ζ), is the only PLC isoform reported in cattle. The objectives were to (1) localize PLC ζ in fresh and capacitated bovine sperm and (2) investigate the activation of PLC ζ during bull sperm capacitation and contributions of PLC activity to this process. We confirmed interaction of testis-specific isoform of Na/K-ATPase (ATP1A4) with PLC ζ (immunolocalization and immunoprecipitation) and tyrosine phosphorylation (immunoprecipitation) of PLC ζ (a post-translational protein modification commonly involved in activation of PLC in somatic cells) during capacitation. Furthermore, incubation of sperm under capacitating conditions upregulated PLC-mediated hyperactivated motility, tyrosine phosphoprotein content, acrosome reaction, and F-actin formation (flow cytometry), implying that PLC activity is enhanced during capacitation and contributing to these capacitation processes. In conclusion, we inferred that PLC ζ is activated during capacitation by tyrosine phosphorylation through a mechanism involving ATP1A4, contributing to capacitation-associated biochemical events.
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Affiliation(s)
- Veena Unnikrishnan
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, CAL, T2N 4N1, Canada
| | - John P Kastelic
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, CAL, T2N 4N1, Canada
| | - Jacob C Thundathil
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, CAL, T2N 4N1, Canada.
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14
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Karimi F, Nematbakhsh M. Mas Receptor Blockade Promotes Renal Vascular Response to Ang II after Partial Kidney Ischemia/Reperfusion in a Two-Kidney-One-Clip Hypertensive Rats Model. Int J Nephrol 2021; 2021:6618061. [PMID: 33986960 PMCID: PMC8079216 DOI: 10.1155/2021/6618061] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 03/18/2021] [Accepted: 04/12/2021] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Partial kidney ischemia-reperfusion (IR) injury is the principal cause of acute kidney injury. The renin-angiotensin system (RAS) and hypertension also may be influenced by renal IR injury. In two models of partial renal IR with and without ischemia preconditioning (IPC) and using Mas receptor (MasR) blockade, A779 or its vehicle, the renal vascular responses to angiotensin II (Ang II) administration in two-kidney-one-clip (2K1C) hypertensive rats were determined. METHODS Thirty-seven 2K1C male Wistar rats with systolic blood pressure ≥150 mmHg were randomly divided into three groups; sham, IR, and IPC + IR. The animals in the sham group underwent surgical procedures except partial IR. The rats in the IR group underwent 45 min partial kidney ischemia, and the animals in the IPC + IR group underwent two 5 min cycles of partial kidney ischemia followed by 10 min reperfusion and partial kidney ischemia for 45 min. The renal vascular responses to graded Ang II (30, 100, 300, and 1000 ng kg-1.min-1) infusion using A779 or its vehicle were measured at constant renal perfusion pressure. RESULTS Four weeks after 2K1C implementation, the intravenous infusion of graded Ang II resulted in dose-related increases in mean arterial pressure (MAP) (P dose < 0.0001) that was not different significantly between the groups. No significant differences were detected between the groups in renal blood flow (RBF) or renal vascular resistance (RVR) responses to Ang II infusion when MasR was not blocked. However, by MasR blockade, these responses were increased in IR and IPC + IR groups that were significantly different from the sham group (P < 0.05). For example, infusion of Ang II at dose 1000 ng kg-1.min-1 resulted in decreased RBF percentage change (RBF%) from the baseline to 17.5 ± 1.9%, 39.7 ± 3.8%, and 31.0 ± 3.4% in sham, IR, and IPC + IR, respectively. CONCLUSION These data revealed the important role of MasR after partial kidney IR in the responses of RBF and RVR to Ang II administration in 2K1C hypertensive rats.
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Affiliation(s)
- Farzaneh Karimi
- Water and Electrolytes Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Physiology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mehdi Nematbakhsh
- Water and Electrolytes Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Physiology, Isfahan University of Medical Sciences, Isfahan, Iran
- Isfahan MN Institute of Basic and Applied Sciences Research, Isfahan, Iran
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15
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Stein RA. COVID-19: Risk groups, mechanistic insights and challenges. Int J Clin Pract 2020; 74:e13512. [PMID: 32266754 PMCID: PMC7235495 DOI: 10.1111/ijcp.13512] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 04/06/2020] [Indexed: 01/22/2023] Open
Affiliation(s)
- Richard Albert Stein
- Chemical and Biomolecular Engineering, New York University, Tandon School of Engineering, Brooklyn, NY, USA
- Department of Natural Sciences, LaGuardia Community College, Long Island City, NY, USA
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16
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Mohammed El Tabaa M, Mohammed El Tabaa M. Targeting Neprilysin (NEP) pathways: A potential new hope to defeat COVID-19 ghost. Biochem Pharmacol 2020; 178:114057. [PMID: 32470547 PMCID: PMC7250789 DOI: 10.1016/j.bcp.2020.114057] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 05/22/2020] [Indexed: 02/06/2023]
Abstract
COVID-19 is an ongoing viral pandemic disease that is caused by SARS-CoV2, inducing severe pneumonia in humans. However, several classes of repurposed drugs have been recommended, no specific vaccines or effective therapeutic interventions for COVID-19 are developed till now. Viral dependence on ACE-2, as entry receptors, drove the researchers into RAS impact on COVID-19 pathogenesis. Several evidences have pointed at Neprilysin (NEP) as one of pulmonary RAS components. Considering the protective effect of NEP against pulmonary inflammatory reactions and fibrosis, it is suggested to direct the future efforts towards its potential role in COVID-19 pathophysiology. Thus, the review aimed to shed light on the potential beneficial effects of NEP pathways as a novel target for COVID-19 therapy by summarizing its possible molecular mechanisms. Additional experimental and clinical studies explaining more the relationships between NEP and COVID-19 will greatly benefit in designing the future treatment approaches.
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Affiliation(s)
- Manar Mohammed El Tabaa
- Pharmacology & Environmental Toxicology, Environmental Studies & Research Institute, University of Sadat City, Egypt.
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17
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Renin-Angiotensin System in Lung Tumor and Microenvironment Interactions. Cancers (Basel) 2020; 12:cancers12061457. [PMID: 32503281 PMCID: PMC7352181 DOI: 10.3390/cancers12061457] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/24/2020] [Accepted: 06/01/2020] [Indexed: 02/08/2023] Open
Abstract
The mechanistic involvement of the renin-angiotensin system (RAS) reaches beyond cardiovascular physiopathology. Recent knowledge pinpoints a pleiotropic role for this system, particularly in the lung, and mainly through locally regulated alternative molecules and secondary pathways. Angiotensin peptides play a role in cell proliferation, immunoinflammatory response, hypoxia and angiogenesis, which are critical biological processes in lung cancer. This manuscript reviews the literature supporting a role for the renin-angiotensin system in the lung tumor microenvironment and discusses whether blockade of this pathway in clinical settings may serve as an adjuvant therapy in lung cancer.
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18
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Bekpinar S, Karaca E, Yamakoğlu S, Alp-Yıldırım Fİ, Olgac V, Uydes-Doğan BS, Cibali E, Gultepe S, Uysal M. Resveratrol ameliorates the cyclosporine-induced vascular and renal impairments: possible impact of the modulation of renin–angiotensin system. Can J Physiol Pharmacol 2019; 97:1115-1123. [DOI: 10.1139/cjpp-2018-0753] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cyclosporine, an immunosuppressive drug, exhibits a toxic effect on renal and vascular systems. The present study investigated whether resveratrol treatment alleviates renal and vascular injury induced by cyclosporine. Cyclosporine (25 mg/kg per day, s.c.) was given for 7 days to rats either alone or in combination with resveratrol (10 mg/kg per day, i.p.). Relaxation and contraction responses of aorta were examined. Serum levels of blood urea nitrogen, creatinine, angiotensin II, and angiotensin 1-7 were measured. Histopathological examinations as well as immunostaining for 4-hydroxynonenal and nitrotyrosine were performed in the kidney. RNA expressions of renin–angiotensin system components were also measured in renal and aortic tissues. Cyclosporine decreased the endothelium-dependent relaxation and increased vascular contraction in the aorta. It caused renal tubular degeneration and increased immunostaining for 4-hydroxynonenal, an oxidative stress marker. Cyclosporine also caused upregulations of the vasoconstrictive renin–angiotensin system components in renal (angiotensin-converting enzyme) and aortic (angiotensin II type 1 receptor) tissues. Resveratrol co-treatment prevented the cyclosporine-related deteriorations. Moreover, it induced the expressions of vasodilatory effective angiotensin-converting enzyme 2 and angiotensin II type 2 receptor in aorta and kidney, respectively. We conclude that resveratrol may be effective in preventing cyclosporine-induced renal tubular degeneration and vascular dysfunction at least in part by modulating the renin–angiotensin system.
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Affiliation(s)
- Seldag Bekpinar
- Department of Biochemistry, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Ece Karaca
- Department of Biochemistry, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Selin Yamakoğlu
- Department of Pharmacology, Faculty of Pharmacy, Istanbul, Turkey
| | | | - Vakur Olgac
- Department of Pathology, Institute of Oncology, Istanbul University, Istanbul, Turkey
| | | | | | - Suleyman Gultepe
- Department of Pharmacology, Faculty of Pharmacy, Istanbul, Turkey
| | - Mujdat Uysal
- Department of Biochemistry, Istanbul Faculty of Medicine, Istanbul, Turkey
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19
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Verma A, Xu K, Du T, Zhu P, Liang Z, Liao S, Zhang J, Raizada MK, Grant MB, Li Q. Expression of Human ACE2 in Lactobacillus and Beneficial Effects in Diabetic Retinopathy in Mice. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2019; 14:161-170. [PMID: 31380462 PMCID: PMC6661465 DOI: 10.1016/j.omtm.2019.06.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 06/25/2019] [Indexed: 02/06/2023]
Abstract
The angiotensin converting enzyme 2 (ACE2) catalyzes the degradation of Angiotensin II (Ang II) to generate Angiotensin-(1-7), which reduces inflammation and oxidative stress stimulated by Ang II. ACE2 has been shown to be protective in cardiovascular and metabolic diseases including diabetes and its complications. However, the challenge for its clinical application is large-scale production of high-quality ACE2 with sufficient target tissue bioavailability. We developed an expression and delivery system based on the use of probiotic species Lactobacillus paracasei (LP) to serve as a live vector for oral delivery of human ACE2. We show that codon-optimized ACE2 can be efficiently expressed in LP. Mice treated with the recombinant LP expressing the secreted ACE2 in fusion with the non-toxic subunit B of cholera toxin, which acts as a carrier to facilitate transmucosal transport, showed increased ACE2 activities in serum and tissues. ACE2-LP administration reduced the number of acellular capillaries, blocked retinal ganglion cell loss, and decreased retinal inflammatory cytokine expression in two mouse models of diabetic retinopathy. These results provide proof of concept for feasibility of using engineered probiotic species as live vector for delivery of human ACE2 with enhanced tissue bioavailability for treating diabetic retinopathy, as well as other diabetic complications.
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Affiliation(s)
- Amrisha Verma
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Kang Xu
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Tao Du
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Ping Zhu
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Zhibing Liang
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Shengquan Liao
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Juantao Zhang
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Mohan K Raizada
- Department of Physiology & Functional Genomics, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Maria B Grant
- Department of Ophthalmology & Visual Sciences, University of Alabama, Birmingham, AL 35294, USA
| | - Qiuhong Li
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
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20
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Amorim RG, Guedes GDS, Vasconcelos SMDL, Santos JCDF. Kidney Disease in Diabetes Mellitus: Cross-Linking between Hyperglycemia, Redox Imbalance and Inflammation. Arq Bras Cardiol 2019; 112:577-587. [PMID: 31188964 PMCID: PMC6555585 DOI: 10.5935/abc.20190077] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 02/13/2019] [Indexed: 12/12/2022] Open
Abstract
Chronic hyperglycemia is the key point of macro- and microvascular complications associated with diabetes mellitus. Excess glucose is responsible for inducing redox imbalance and both systemic and intrarenal inflammation, playing a critical role in the pathogenesis of diabetic kidney disease, which is currently the leading cause of dialysis in the world. The pathogenesis of the disease is complex, multifactorial and not fully elucidated; many factors and mechanisms are involved in the development, progression and clinical outcomes of the disease. Despite the disparate mechanisms involved in renal damage related to diabetes mellitus, the metabolic mechanisms involving oxidative/inflammatory pathways are widely accepted. The is clear evidence that a chronic hyperglycemic state triggers oxidative stress and inflammation mediated by altered metabolic pathways in a self-perpetuating cycle, promoting progression of cell injury and of end-stage renal disease. The present study presents an update on metabolic pathways that involve redox imbalance and inflammation induced by chronic exposure to hyperglycemia in the pathogenesis of diabetic kidney disease.
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Affiliation(s)
- Rayne Gomes Amorim
- Universidade Federal de Alagoas - Faculdade de Nutrição, Maceió, AL - Brazil
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21
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Wang M, Han W, Zhang M, Fang W, Zhai X, Guan S, Qu X. Long-term renal sympathetic denervation ameliorates renal fibrosis and delays the onset of hypertension in spontaneously hypertensive rats. Am J Transl Res 2018; 10:4042-4053. [PMID: 30662649 PMCID: PMC6325514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
This study was designed to explore the effects of long-term renal denervation (RDN) on blood pressure and renal function in spontaneously hypertensive rats (SHR). RDN was performed in bilateral renal arteries with 10% phenol in absolute ethanol in SHR and Wistar-Kyoto rats (WKY) at 13 weeks. Age-matched SHR and WKY served as controls. Blood pressure was measured. Plasma, urine and kidneys were collected 8 months after the RDN operation. Plasma renin activity (PRA), aldosterone levels, reactive oxidative stress, renal function and structural remodeling were assessed. RDN-treated SHR demonstrated a lower spontaneous rise in systolic blood pressure than rats in the SHR-Sham group (P < 0.01, at 20, 27, 34 and 41 weeks), except at 48 weeks (198.2 ± 12.9 vs 209.4 ± 11.9 mmHg, P = 0.145). WKY were not affected by RDN. Renal tissue norepinephrine was decreased by RDN in both SHR and WKY. Plasma PRA activity, aldosterone levels, and NAD(P)H oxidase activity were reduced by the RDN in SHR. Plasma eNOS and NO were increased by RDN only in SHR. The renal nerve was destroyed by RDN with no regeneration after 8 months. The progression of renal dysfunction associated with urinary protein excretion, glomerular sclerosis, and tubulointerstitial fibrosis was attenuated by RDN only in SHR through downregulation of the ACE/Ang II/AT1R axis and upregulation of the ACE2/Ang-(1-7)/MasR axis in the kidney. Thus, RDN delays the onset of hypertension and ameliorates glomerular sclerosis and tubulointerstitial fibrosis in SHR.
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Affiliation(s)
- Ming Wang
- Department of Cardiology, Huadong Hospital Affiliated to Fudan UniversityShanghai, China
| | - Wenzheng Han
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiaotong UniversityShanghai, China
| | - Min Zhang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiaotong UniversityShanghai, China
| | - Weiyi Fang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiaotong UniversityShanghai, China
| | - Xinrong Zhai
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiaotong UniversityShanghai, China
| | - Shaofeng Guan
- Department of Cardiology, Huadong Hospital Affiliated to Fudan UniversityShanghai, China
- Shanghai Key Laboratory of Clinical Geriatric MedicineShanghai, China
| | - Xinkai Qu
- Department of Cardiology, Huadong Hospital Affiliated to Fudan UniversityShanghai, China
- Shanghai Key Laboratory of Clinical Geriatric MedicineShanghai, China
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22
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Abstract
Diabetic nephropathy (DN) is currently the leading cause of end-stage renal disease globally. Given the increasing incidence of diabetes, many experts hold the view that DN will eventually progress toward pandemic proportions. Whilst hyperglycaemia-induced vascular dysfunction is the primary initiating mechanism in DN, its progression is also driven by a heterogeneous set of pathological mechanisms, including oxidative stress, inflammation and fibrosis. Current treatment strategies for DN are targeted against the fundamental dysregulation of glycaemia and hypertension. Unfortunately, these standards of care can delay but do not prevent disease progression or the significant emotional, physical and financial costs associated with this disease. As such, there is a pressing need to develop novel therapeutics that are both effective and safe. Set against the genomic era, numerous potential target pathways in DN have been identified. However, the clinical translation of basic DN research has been met with a number of challenges. Moreover, the notion of DN as a purely vascular disease is outdated and it has become clear that DN is a multi-dimensional, multi-cellular condition. The review will highlight the current therapeutic approaches for DN and provide an insight into how the inherent complexity of DN is shaping the research pathways toward the development and clinical translation of novel therapeutic strategies.
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23
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Molecular docking, 3D-QSAR and structural optimization on imidazo-pyridine derivatives dually targeting AT1 and PPARg. Oncotarget 2018; 8:25612-25627. [PMID: 28445965 PMCID: PMC5421955 DOI: 10.18632/oncotarget.15778] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 01/27/2017] [Indexed: 12/14/2022] Open
Abstract
Telmisartan, a bifunctional agent of blood pressure lowering and glycemia reduction, was previously reported to antagonize angiotensin II type 1 (AT1) receptor and partially activate peroxisome proliferator-activated receptor γ (PPARγ) simultaneously. Through the modification to telmisartan, researchers designed and obtained imidazo-\pyridine derivatives with the IC50s of 0.49∼94.1 nM against AT1 and EC50s of 20∼3640 nM towards PPARγ partial activation. For minutely inquiring the interaction modes with the relevant receptor and analyzing the structure-activity relationships, molecular docking and 3D-QSAR (Quantitative structure-activity relationships) analysis of these imidazo-\pyridines on dual targets were conducted in this work. Docking approaches of these derivatives with both receptors provided explicit interaction behaviors and excellent matching degree with the binding pockets. The best CoMFA (Comparative Molecular Field Analysis) models exhibited predictive results of q2=0.553, r2=0.954, SEE=0.127, r2pred=0.779 for AT1 and q2=0.503, r2=1.00, SEE=0.019, r2pred=0.604 for PPARγ, respectively. The contour maps from the optimal model showed detailed information of structural features (steric and electrostatic fields) towards the biological activity. Combining the bioisosterism with the valuable information from above studies, we designed six molecules with better predicted activities towards AT1 and PPARγ partial activation. Overall, these results could be useful for designing potential dual AT1 antagonists and partial PPARγ agonists.
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24
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Cai W, Zhang Z, Huang Y, Sun H, Qiu L. Vaccarin alleviates hypertension and nephropathy in renovascular hypertensive rats. Exp Ther Med 2017; 15:924-932. [PMID: 29399101 PMCID: PMC5772753 DOI: 10.3892/etm.2017.5442] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 11/02/2017] [Indexed: 12/11/2022] Open
Abstract
The kidney is an important organ in the regulation of blood pressure, and it is also one of the primary target organs of hypertension. Kidney damage in response to hypertension eventually leads to renal insufficiency. The authors previously demonstrated that vaccarin exhibits a protective role in endothelial injury. However, the effects of vaccarin on the two-kidney, one clip (2K1C) renovascular hypertension model and subsequent kidney injury have yet to be fully elucidated. The present study was designed to investigate the roles and mechanisms of vaccarin in attenuating hypertension and whether vaccarin had beneficial effects on kidney injury. The 2K1C rats had greater fibrosis, apoptosis, reactive oxygen species production, inflammation, angiotensin II (Ang II) and angiotensin type 1 (AT1) receptors in the right kidney compared with normotensive rats, which were alleviated by a high dose of vaccarin and captopril. Vaccarin treatment attenuated hypertension, reduced fibrosis markers, NADPH oxidase (NOX)-2, NOX-4, 3-nitrotyrosine, tumor necrosis factor-α, interleukin 1β (IL-1β), and IL-6 protein levels and altered pro-apoptotic protein levels including caspase-3, anti-apoptosis protein B cell lymphoma (Bcl)-2 and Bcl-2 associated X, apoptosis regulator in the right kidney of 2K1C rats. These findings suggest that the protective effects of vaccarin on the right kidney in renovascular hypertension are possibly due to downregulation of fibrosis, inflammatory molecules, oxidative stress, Ang II, and AT1 receptor levels.
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Affiliation(s)
- Weiwei Cai
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, P.R. China
| | - Zhenpeng Zhang
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, P.R. China
| | - Yiqi Huang
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, P.R. China
| | - Haijian Sun
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, P.R. China
| | - Liying Qiu
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, P.R. China
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25
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Abstract
PURPOSE OF REVIEW The intrarenal renin-angiotensin-aldosterone system (RAS) is an independent paracrine hormonal system with an increasingly prominent role in hypertension and renal disease. Two enzyme components of this system are angiotensin-converting enzyme (ACE) and more recently discovered ACE2. The purpose of this review is to describe recent discoveries regarding the roles of intrarenal ACE and ACE2 and their interaction. RECENT FINDINGS Renal tubular ACE contributes to salt-sensitive hypertension. Additionally, the relative expression and activity of intrarenal ACE and ACE2 are central to promoting or inhibiting different renal pathologies including renovascular hypertension, diabetic nephropathy, and renal fibrosis. Renal ACE and ACE2 represent two opposing axes within the intrarenal RAS system whose interaction determines the progression of several common disease processes. While this relationship remains complex and incompletely understood, further investigations hold the potential for creating novel approaches to treating hypertension and kidney disease.
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26
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Kawanami D, Matoba K, Takeda Y, Nagai Y, Akamine T, Yokota T, Sango K, Utsunomiya K. SGLT2 Inhibitors as a Therapeutic Option for Diabetic Nephropathy. Int J Mol Sci 2017; 18:ijms18051083. [PMID: 28524098 PMCID: PMC5454992 DOI: 10.3390/ijms18051083] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 05/03/2017] [Accepted: 05/15/2017] [Indexed: 12/11/2022] Open
Abstract
Diabetic nephropathy (DN) is a major cause of end-stage renal disease (ESRD) worldwide. Glycemic and blood pressure (BP) control are important but not sufficient to attenuate the incidence and progression of DN. Sodium–glucose cotransporter (SGLT) 2 inhibitors are a new class of glucose-lowering agent suggested to exert renoprotective effects in glucose lowering-dependent and independent fashions. Experimental studies have shown that SGLT2 inhibitors attenuate DN in animal models of both type 1 diabetes (T1D) and type 2 diabetes (T2D), indicating a potential renoprotective effect beyond glucose reduction. Renoprotection by SGLT2 inhibitors has been demonstrated in T2D patients with a high cardiovascular risk in randomized controlled trials (RCTs). These favorable effects of SGLT2 inhibitors are explained by several potential mechanisms, including the attenuation of glomerular hyperfiltration, inflammation and oxidative stress. In this review article, we discuss the renoprotective effects of SGLT2 inhibitors by integrating experimental findings with the available clinical data.
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Affiliation(s)
- Daiji Kawanami
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan.
| | - Keiichiro Matoba
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan.
| | - Yusuke Takeda
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan.
| | - Yosuke Nagai
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan.
| | - Tomoyo Akamine
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan.
- Diabetic Neuropathy Project, Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan.
| | - Tamotsu Yokota
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan.
| | - Kazunori Sango
- Diabetic Neuropathy Project, Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan.
| | - Kazunori Utsunomiya
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan.
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Karnik SS, Singh KD, Tirupula K, Unal H. Significance of angiotensin 1-7 coupling with MAS1 receptor and other GPCRs to the renin-angiotensin system: IUPHAR Review 22. Br J Pharmacol 2017; 174:737-753. [PMID: 28194766 PMCID: PMC5387002 DOI: 10.1111/bph.13742] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 01/31/2017] [Accepted: 02/06/2017] [Indexed: 12/14/2022] Open
Abstract
Angiotensins are a group of hormonal peptides and include angiotensin II and angiotensin 1-7 produced by the renin angiotensin system. The biology, pharmacology and biochemistry of the receptors for angiotensins were extensively reviewed recently. In the review, the receptor nomenclature committee was not emphatic on designating MAS1 as the angiotensin 1-7 receptor on the basis of lack of classical G protein signalling and desensitization in response to angiotensin 1-7, as well as a lack of consensus on confirmatory ligand pharmacological analyses. A review of recent publications (2013-2016) on the rapidly progressing research on angiotensin 1-7 revealed that MAS1 and two additional receptors can function as 'angiotensin 1-7 receptors', and this deserves further consideration. In this review we have summarized the information on angiotensin 1-7 receptors and their crosstalk with classical angiotensin II receptors in the context of the functions of the renin angiotensin system. It was concluded that the receptors for angiotensin II and angiotensin 1-7 make up a sophisticated cross-regulated signalling network that modulates the endogenous protective and pathogenic facets of the renin angiotensin system.
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Affiliation(s)
- Sadashiva S Karnik
- Department of Molecular Cardiology, Lerner Research InstituteCleveland Clinic FoundationClevelandOhioUSA
| | | | - Kalyan Tirupula
- Department of Molecular Cardiology, Lerner Research InstituteCleveland Clinic FoundationClevelandOhioUSA
- Biological E Limited, ShamirpetHyderabadIndia
| | - Hamiyet Unal
- Department of Molecular Cardiology, Lerner Research InstituteCleveland Clinic FoundationClevelandOhioUSA
- Department of Basic Sciences, Faculty of Pharmacy and Betul Ziya Eren Genome and Stem Cell CenterErciyes UniversityKayseriTurkey
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Lei Y, Xu Q, Zeng B, Zhang W, Zhen Y, Zhai Y, Cheng F, Mei W, Zheng D, Feng J, Lan J, Chen J. Angiotensin-(1-7) protects cardiomyocytes against high glucose-induced injuries through inhibiting reactive oxygen species-activated leptin-p38 mitogen-activated protein kinase/extracellular signal-regulated protein kinase 1/2 pathways, but not the leptin-c-Jun N-terminal kinase pathway in vitro. J Diabetes Investig 2017; 8:434-445. [PMID: 27896943 PMCID: PMC5497033 DOI: 10.1111/jdi.12603] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Revised: 11/04/2016] [Accepted: 11/17/2016] [Indexed: 02/05/2023] Open
Abstract
Aims/Introduction Angiotensin‐(1–7) (Ang‐[1–7]), recognized as a new bioactive peptide in the renin–angiotensin system, shows biological and pharmacological properties in diabetic cardiovascular diseases. The leptin‐induced p38 mitogen‐activated protein kinase (MAPK) pathway has been reported to contribute to high glucose (HG)‐induced injury. In the present study, we showed the mechanism of how Ang‐(1–7) can protect against HG‐stimulated injuries in H9c2 cells. Materials and Methods H9c2 cells were treated with 35 mmol/L glucose (HG) for 24 h to establish a model of HG‐induced damage. Apoptotic cells were observed by Hoechst 33258 staining. Cell viability was analyzed by cell counter kit‐8. The expression of protein was detected by western blot. Reactive oxygen species was tested by 2′,7′‐dichlorodihydrofluorescein diacetate staining. Mitochondrial membrane potential was measured by 5,5′,6,6′‐Tetrachloro‐1,1′,3,3′‐tetraethyl‐imidacarbocyanine iodide staining. Results The present results showed that treating H9c2 cells with HG obviously enhanced the expressions of both the leptin and phosphorylated (p)‐MAPK pathway. However, the overexpression levels of leptin and p‐p38 MAPK/p‐extracellular signal‐regulated protein kinase 1/2 (ERK1/2), but not p‐c‐Jun N‐terminal kinase, were significantly suppressed by treatment of the cells with Ang‐(1–7). Additionally, leptin antagonist also markedly suppressed the overexpressions of p38 and ERK1/2 induced by HG, whereas leptin antagonist had no influence on the overexpression of c‐Jun N‐terminal kinase. More remarkable, Ang‐(1–7), leptin antagonist, SB203580 or SP600125, respectively, significantly inhibited the injuries induced by HG, such as the increased cell viability, decreased apoptotic rate, reduction of ROS production and increased mitochondrial membrane potential. Furthermore, the overexpressions of p38 MAPK, ERK1/2 and leptin were suppressed by N‐actyl‐L‐cystine. Conclusions The present findings show that Ang‐(1–7) protects from HG‐stimulated damage as an inhibitor of the reactive oxygen species–leptin–p38 MAPK/ERK1/2 pathways, but not the leptin–c‐Jun N‐terminal kinase pathway in vitro.
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Affiliation(s)
- Yiyan Lei
- Department of Thoracic Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Qing Xu
- Department of Cardiovasology and Cardiac Care Unit (CCU), Huangpu Division of the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Bo Zeng
- Department of Thoracic Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wei Zhang
- Department of Cardiovasology and Cardiac Care Unit (CCU), Huangpu Division of the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yulan Zhen
- Department of Oncology, The Third People's Hospital of Dongguan City, Dongguan, China
| | - Yuansheng Zhai
- Department of Cardiovasology and Cardiac Care Unit (CCU), Huangpu Division of the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Fei Cheng
- Department of Cardiovascular Medicine and Dongguan Cardiovascular Institute, The Third People's Hospital of Dongguan City, Dongguan, China
| | - Weiyi Mei
- Department of Cardiovasology and Cardiac Care Unit (CCU), Huangpu Division of the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Dongdan Zheng
- Department of Cardiovasology and Cardiac Care Unit (CCU), Huangpu Division of the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jianqiang Feng
- Department of Physiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Jun Lan
- Department of Cardiovascular Medicine and Dongguan Cardiovascular Institute, The Third People's Hospital of Dongguan City, Dongguan, China
| | - Jingfu Chen
- Department of Cardiovascular Medicine and Dongguan Cardiovascular Institute, The Third People's Hospital of Dongguan City, Dongguan, China
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Hou Y, Zhang F, Liu Z, Su S, Wu X, Wang Z. Effect of telmisartan and enalapril on ventricular remodeling and kidney prognosis of patients with coronary artery disease complicated with diabetic nephropathy. Exp Ther Med 2016; 13:131-134. [PMID: 28123481 PMCID: PMC5245079 DOI: 10.3892/etm.2016.3933] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 11/21/2016] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was to compare the value of telmisartan and enalapril on ventricular remodeling and kidney prognosis of patients with coronary artery disease complicated with diabetic nephropathy, and provide discussion on clinical reasonably chosen medicine. A total of 60 cases of coronary artery disease complicated with diabetic nephropathy were randomly divided for telmisartan (80 mg/day) treatment (n=32), enalapril (10 mg/day) treatment (n=28), while the rest of the therapy was kept the same. After 12 weeks, the clinical effects were compared between different groups. It was found that in comparison with enalapril group, the left ventricular ejection fraction of telmisartan group was significantly higher, and left ventricular end-diastolic diameter was significantly lower (P<0.05). The serum creatinine level and 24-h protein of telmisartan group were significantly lower than that for the enalapril group (P<0.05). In conclusion, the regular telmisartan treatment for patients with coronary artery disease complicated with diabetic nephropathy is better than enalapril on ventricular remodeling and kidney prognosis.
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Affiliation(s)
- Yuyan Hou
- Department of Cardiovascular Medicine, Xinxiang Central Hospital, Xinxiang, Henan 453000, P.R. China
| | - Fucheng Zhang
- Department of Cardiovascular Medicine, Xinxiang Central Hospital, Xinxiang, Henan 453000, P.R. China
| | - Zhiqiang Liu
- Department of Cardiovascular Medicine, Xinxiang Central Hospital, Xinxiang, Henan 453000, P.R. China
| | - Shuhong Su
- Department of Cardiovascular Medicine, Xinxiang Central Hospital, Xinxiang, Henan 453000, P.R. China
| | - Xiao Wu
- Department of Cardiovascular Medicine, Xinxiang Central Hospital, Xinxiang, Henan 453000, P.R. China
| | - Zhifang Wang
- Department of Cardiovascular Medicine, Xinxiang Central Hospital, Xinxiang, Henan 453000, P.R. China
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Kehoe PG, Wong S, Al Mulhim N, Palmer LE, Miners JS. Angiotensin-converting enzyme 2 is reduced in Alzheimer's disease in association with increasing amyloid-β and tau pathology. ALZHEIMERS RESEARCH & THERAPY 2016; 8:50. [PMID: 27884212 PMCID: PMC5123239 DOI: 10.1186/s13195-016-0217-7] [Citation(s) in RCA: 139] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 10/20/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND Hyperactivity of the classical axis of the renin-angiotensin system (RAS), mediated by angiotensin II (Ang II) activation of the angiotensin II type 1 receptor (AT1R), is implicated in the pathogenesis of Alzheimer's disease (AD). Angiotensin-converting enzyme-2 (ACE-2) degrades Ang II to angiotensin 1-7 (Ang (1-7)) and counter-regulates the classical axis of RAS. We have investigated the expression and distribution of ACE-2 in post-mortem human brain tissue in relation to AD pathology and classical RAS axis activity. METHODS We measured ACE-2 activity by fluorogenic peptide substrate assay in mid-frontal cortex (Brodmann area 9) in a cohort of AD (n = 90) and age-matched non-demented controls (n = 59) for which we have previous data on ACE-1 activity, amyloid β (Aβ) level and tau pathology, as well as known ACE1 (rs1799752) indel polymorphism, apolipoprotein E (APOE) genotype, and cerebral amyloid angiopathy severity scores. RESULTS ACE-2 activity was significantly reduced in AD compared with age-matched controls (P < 0.0001) and correlated inversely with levels of Aβ (r = -0.267, P < 0.001) and phosphorylated tau (p-tau) pathology (r = -0.327, P < 0.01). ACE-2 was reduced in individuals possessing an APOE ε4 allele (P < 0.05) and was associated with ACE1 indel polymorphism (P < 0.05), with lower ACE-2 activity in individuals homozygous for the ACE1 insertion AD risk allele. ACE-2 activity correlated inversely with ACE-1 activity (r = -0.453, P < 0.0001), and the ratio of ACE-1 to ACE-2 was significantly elevated in AD (P < 0.0001). Finally, we show that the ratio of Ang II to Ang (1-7) (a proxy measure of ACE-2 activity indicating conversion of Ang II to Ang (1-7)) is reduced in AD. CONCLUSIONS Together, our findings indicate that ACE-2 activity is reduced in AD and is an important regulator of the central classical ACE-1/Ang II/AT1R axis of RAS, and also that dysregulation of this pathway likely plays a significant role in the pathogenesis of AD.
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Affiliation(s)
- Patrick Gavin Kehoe
- Dementia Research Group, University of Bristol, Level 1, Learning and Research, Southmead Hospital, Bristol, BS10 5NB, UK.
| | - Steffenny Wong
- Dementia Research Group, University of Bristol, Level 1, Learning and Research, Southmead Hospital, Bristol, BS10 5NB, UK
| | - Noura Al Mulhim
- Dementia Research Group, University of Bristol, Level 1, Learning and Research, Southmead Hospital, Bristol, BS10 5NB, UK
| | - Laura Elyse Palmer
- Dementia Research Group, University of Bristol, Level 1, Learning and Research, Southmead Hospital, Bristol, BS10 5NB, UK
| | - J Scott Miners
- Dementia Research Group, University of Bristol, Level 1, Learning and Research, Southmead Hospital, Bristol, BS10 5NB, UK.
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Lin Y, Zheng C, Liu Y, Wang L, Gong H. Effect of adenovirus mediated β 2-AR overexpression on IL-10 level secreted by cardiomyocytes of heart failure rats. Exp Ther Med 2016; 12:1349-1354. [PMID: 27602066 PMCID: PMC4998160 DOI: 10.3892/etm.2016.3451] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 06/13/2016] [Indexed: 12/23/2022] Open
Abstract
The effect of β2-adrenergic receptor (AR) overexpression on interleukin (IL)-10 content secreted by cardiomyocytes of heart failure (HF) rats was investigated. A rat model of chronic HF was established by partially banding abdominal aorta and the cardiomyocytes were isolated with collagenase II. The cardiomyocytes were then transfected with adenovirus type 5-ADRβ2-enhanced green fluorescent protein (EGFP) for 48 h to observe the changes of β2-AR protein expression using western blot analysis. The IL-10 level was detected by ELISA. The experiment was divided into seven groups: Control, HF, HF+EGFP, HF+β2, sham, sham+EGFP and sham+β2 groups. Compared with the sham-operated group, left ventricular diastolic dimension, and left ventricular systolic dimension were increased (P<0.05), whereas ejection fraction and fractional shortening were decreased (P<0.05) in the HF group. Compared with the sham group, the cardiomyocyte survival rate of the HF group was significantly reduced (P<0.05). Compared with the control or sham group, the β2-AR protein level of the HF group showed no significant differences (P>0.05). Compared with the HF and HF+EGFP groups, the expression of β2-AR protein of cardiomyocytes was increased in the HF+β2 group (P<0.05). Compared with the sham group, IL-10 content secreted by cardiomyocytes in the HF group was increased (P<0.05). Compared with the HF and HF+EGFP groups, IL-10 content in the HF+β2 group was increased significantly (P<0.05). In conclusion, the concentration of IL-10 secreted by cardiomyocytes of HF rats was increased. The overexpression of β2-AR in the cardiomyocytes of HF rats was able to enhance the secretion of IL-10.
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Affiliation(s)
- Yan Lin
- Xuzhou Central Hospital, Xuzhou Cardiovascular Disease Institute, Xuzhou, Jiangsu 221009, P.R. China
| | - Cheng Zheng
- Xuzhou Central Hospital, Xuzhou Cardiovascular Disease Institute, Xuzhou, Jiangsu 221009, P.R. China
| | - Ying Liu
- Xuzhou Central Hospital, Xuzhou Cardiovascular Disease Institute, Xuzhou, Jiangsu 221009, P.R. China
| | - Lei Wang
- Xuzhou Central Hospital, Xuzhou Cardiovascular Disease Institute, Xuzhou, Jiangsu 221009, P.R. China
| | - Haibin Gong
- Xuzhou Central Hospital, Xuzhou Cardiovascular Disease Institute, Xuzhou, Jiangsu 221009, P.R. China
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CHENG XIN, YU GUOJUN, HU JIANGPING, XU XUEFENG, LUO FANG, SHEN PING, ZHANG GUOSHENG, YANG NING. Clinical study of Shengxuening tablet combined with rHuEPO for the treatment of renal anemia of maintenance hemodialysis patients. Exp Ther Med 2016; 12:157-160. [PMID: 27347032 PMCID: PMC4906941 DOI: 10.3892/etm.2016.3307] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 04/28/2016] [Indexed: 12/16/2022] Open
Abstract
The aim of the present study was to investigate the clinical effects of Shengxuening tablet (silkworm excrement) combined with recombinant human erythropoietin (rHuEPO) for the treatment of renal anemia of maintenance hemodialysis (MHD) patients. Seventy-two MHD patients with renal anemia were included in the study and randomly divided into the control (n=34) and observation (n=38) groups. Patients in the control group were treated by hypodermic injection of 100-150 U/(kg·w) rHuEPO and patients in the observation group were treated by rHuEPO + 1.0 g t.i.d. p.o. Shengxuening tablet. The two groups were assisted by conventional treatments including iron, folic acid, vitamin B12 and L-carnitine. After 3 and 6 months, improvement of anemia was compared. After 3 months, the hemoglobin, hematocrit, serum ferritin and transferrin saturation levels of the observation group were significantly higher than those of the control group (p<0.05). In addition, C-reactive protein and superoxide dismutase levels of the observation group were significantly lower than those of the control group (p<0.05). After 6 months, indices of the observation group were ameliorated while the improvement of control group was not obvious, and indices of the observation group were significantly higher than those of the control group (p<0.05). Consumption of rHuEPO in the observation group was significantly less than that of the control group, and the total effective rate was significantly higher than that of the control group (p<0.05). In conclusion, Shengxuening tablet combined with rHuEPO was safe and effective for the treatment of renal anemia of MHD patients.
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Affiliation(s)
- XIN CHENG
- Division of Nephrology, Zhengzhou TCM Hospital, Zhengzhou, Henan 450000, P.R. China
| | - GUOJUN YU
- Division of Nephrology, The Affiliated Hospital of Henan Province Chinese Medicine Research Institute, Zhengzhou, Henan 450004, P.R. China
| | - JIANGPING HU
- Division of Nephrology, Zhengzhou TCM Hospital, Zhengzhou, Henan 450000, P.R. China
| | - XUEFENG XU
- Division of Nephrology, Zhengzhou TCM Hospital, Zhengzhou, Henan 450000, P.R. China
| | - FANG LUO
- Division of Endocrinology, Zhengzhou Central Hospital, Zhengzhou, Henan 450007, P.R. China
| | - PING SHEN
- Division of Nephrology, Zhengzhou TCM Hospital, Zhengzhou, Henan 450000, P.R. China
| | - GUOSHENG ZHANG
- Division of Nephrology, Zhengzhou TCM Hospital, Zhengzhou, Henan 450000, P.R. China
| | - NING YANG
- Department of Science and Education, Zhengzhou TCM Hospital, Zhengzhou, Henan 450000, P.R. China
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Sha T, Qi C, Fu W, Hao JI, Gong L, Wu H, Zhang Q. Experimental study of USPIO-enhanced MRI in the detection of atherosclerotic plaque and the intervention of atorvastatin. Exp Ther Med 2016; 12:141-146. [PMID: 27347029 PMCID: PMC4907054 DOI: 10.3892/etm.2016.3266] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 04/18/2016] [Indexed: 12/20/2022] Open
Abstract
Ultrasmall superparamagnetic iron oxide (USPIO) can identify atherosclerotic vulnerable plaque and atorvastatin can stabilize vulnerable plaque by inhibiting the inflammatory response. Using balloon injury in rabbit abdominal aortic endothelial cells and p53 gene transfecting the local plaque, we established an atherosclerotic vulnerable plaque model. In the treatment group, animals were treated with atorvastatin for 8 weeks. At the end of week 16, the animals in each group underwent medication trigger. USPIO-enhanced MRI was utilized to detect vulnerable plaque formation and the transformation of stable plaque in the treatment group. Pathological and serological studies were conducted in animal sera and tissues. The images from the USPIO-enhanced MRI, and the vulnerable plaque showed low signal, especially on T2*-weighted sequences (T2*WI). Plaque signal strength reached a negative enhancement peak at 96 h. Compared with the other groups, lipids, cell adhesion molecule-1 and vascular cell adhesion molecule-1 levels were significantly lower (P<0.05) in the treatment group. In conclusion, USPIO-enhanced MRI can identify vulnerable plaque formation by deposition in macrophages, while atorvastatin is able to inhibit the progression of atherosclerosis and promote plaque transformation to the stable form.
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Affiliation(s)
- Ting Sha
- Institute of Cardiovascular Diseases, Xuzhou Medical College, Xuzhou, Jiangsu 221002, P.R. China
| | - Chunmei Qi
- The Second Affiliated Hospital, Xuzhou Medical College, Xuzhou, Jiangsu 221000, P.R. China
| | - Wei Fu
- Institute of Cardiovascular Diseases, Xuzhou Medical College, Xuzhou, Jiangsu 221002, P.R. China
| | - J I Hao
- The Second Affiliated Hospital, Xuzhou Medical College, Xuzhou, Jiangsu 221000, P.R. China
| | - Lei Gong
- The Second Affiliated Hospital, Xuzhou Medical College, Xuzhou, Jiangsu 221000, P.R. China
| | - Hao Wu
- The Second Affiliated Hospital, Xuzhou Medical College, Xuzhou, Jiangsu 221000, P.R. China
| | - Qingdui Zhang
- The Second Affiliated Hospital, Xuzhou Medical College, Xuzhou, Jiangsu 221000, P.R. China
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