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Foe and friend in the COVID-19-associated acute kidney injury: an insight on intrarenal renin-angiotensin system. Acta Biochim Biophys Sin (Shanghai) 2021; 54:1-11. [PMID: 35130610 PMCID: PMC9828085 DOI: 10.3724/abbs.2021002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Since the first reported case in December of 2019, the coronavirus disease 2019 (COVID-19) has became an international public health emergency. So far, there are more than 228,206,384 confirmed cases including 4,687,066 deaths. Kidney with high expression of angiotensin-converting enzyme 2 (ACE2) is one of the extrapulmonary target organs affected in patients with COVID-19. Acute kidney injury (AKI) is one of the independent risk factors for the death of COVID-19 patients. The imbalance between ACE2-Ang(1-7)-MasR and ACE-Ang II-AT1R axis in the kidney may contribute to COVID-19-associated AKI. Although series of research have shown the inconsistent effects of multiple common RAS inhibitors on ACE2 expression and enzyme activity, most of the retrospective cohort studies indicated the safety and protective effects of ACEI/ARB in COVID-19 patients. This review article highlights the current knowledge on the possible involvement of intrarenal RAS in COVID-19-associated AKI with a primary focus on the opposing effects of ACE2-Ang(1-7)-MasR and ACE-Ang II-AT1R signaling in the kidney. Human recombinant soluble ACE2 or ACE2 variants with preserved ACE2-enzymatic activity may be the best options to improve COVID-19-associated AKI.
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Hsu CY, Chuang YC, Chang FC, Chuang HY, Chiou TTY, Lee CT. Disrupted Sleep Homeostasis and Altered Expressions of Clock Genes in Rats with Chronic Lead Exposure. TOXICS 2021; 9:toxics9090217. [PMID: 34564368 PMCID: PMC8473409 DOI: 10.3390/toxics9090217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/06/2021] [Accepted: 09/08/2021] [Indexed: 02/04/2023]
Abstract
Sleep disturbance is one of the neurobehavioral complications of lead neurotoxicity. The present study evaluated the impacts of chronic lead exposure on alteration of the sleep–wake cycle in association with changes of clock gene expression in the hypothalamus. Sprague–Dawley rats with chronic lead exposure consumed drinking water that contained 250 ppm of lead acetate for five weeks. Electroencephalography and electromyography were recorded for scoring the architecture of the sleep–wake cycle in animals. At six Zeitgeber time (ZT) points (ZT2, ZT6, ZT10, ZT14, ZT18, and ZT22), three clock genes, including rPer1, rPer2, and rBmal1b, were analyzed. The rats with chronic lead exposure showed decreased slow wave sleep and increased wakefulness in the whole light period (ZT1 to ZT12) and the early dark period (ZT13 to ZT15) that was followed with a rebound of rapid-eye-movement sleep at the end of the dark period (ZT22 to ZT24). The disturbance of the sleep–wake cycle was associated with changes in clock gene expression that was characterized by the upregulation of rPer1 and rPer2 and the feedback repression of rBmal1b. We concluded that chronic lead exposure has a negative impact on the sleep–wake cycle in rats that predominantly disrupts sleep homeostasis. The disruption of sleep homeostasis was associated with a toxic effect of lead on the clock gene expression in the hypothalamus.
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Affiliation(s)
- Chung-Yao Hsu
- Department of Neurology, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan;
- Department of Neurology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
| | - Yao-Chung Chuang
- Department of Neurology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan;
- Institute for Translation Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan
| | - Fang-Chia Chang
- School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan;
| | - Hung-Yi Chuang
- Department of Public Health and Environmental Medicine, College of Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
| | - Terry Ting-Yu Chiou
- College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan;
- Division of Nephrology, Department of Internal Medicine, College of Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University, Kaohsiung 83301, Taiwan
| | - Chien-Te Lee
- College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan;
- Division of Nephrology, Department of Internal Medicine, College of Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University, Kaohsiung 83301, Taiwan
- Chang-Gang Kidney Research Center, Kaohsiung 83301, Taiwan
- Correspondence:
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Abdel Fattah ME, Sobhy HM, Reda A, Abdelrazek HMA. Hepatoprotective effect of Moringa oleifera leaves aquatic extract against lead acetate-induced liver injury in male Wistar rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:43028-43043. [PMID: 32725563 DOI: 10.1007/s11356-020-10161-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 07/16/2020] [Indexed: 06/11/2023]
Abstract
Current research was performed to explore the hepatoprotective potential of Moringa oleifera leaves extract on lead acetate-induced hepatic injury. Twenty-four male Wistar rats were divided equally into 4 groups. The first group was control, while the second, third, and fourth groups were given 200 mg/kg aqueous Moringa extract only, 100 mg/kg lead only, and 100 mg/kg lead plus 200 mg/kg aqueous Moringa leaves extract, respectively, via oral gavage for 4 weeks. Weight gain and feed efficiency ratio were recorded. Serum lipid profiles, liver enzyme activities, and proteins beside hepatic superoxide dismutase activity, reduced glutathione, tumor necrosis factor alpha (TNF-α), and deoxyribonucleic acid fragmentation were assessed. Liver histopathological examination and nuclear factor kappa B (NF-kB) immunohistochemistry were performed. Administration of lead lowered (P < 0.05) weight gain, feed efficiency ratio, and perturbed lipid profile than control. Lead increased liver enzyme activities and TNF-α, while reduced serum proteins and hepatic antioxidant markers compared to control. Lead aggravated hepatic DNA fragmentation beside the presence of histopathological lesions. Co-administration of aqueous Moringa extract with lead significantly alleviated lead-induced adverse effects. The administration of aqueous Moringa extract with its antioxidant significantly restored the lead perturbations through reduction of oxidative stress-induced DNA damage via amelioration of NF-kB and TNF-α which kept hepatocyte integrity and reduced serum hepatic enzyme activities.
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Affiliation(s)
- Mohy E Abdel Fattah
- Department of Organic Chemistry, Faculty of Sciences, Suez Canal University, Ismailia, Egypt
| | - Hanan M Sobhy
- Department of Biochemistry and Food Deficiency, Animal Health research Institute, Giza, Egypt
| | - Areeg Reda
- Department of Biochemistry and Food Deficiency, Animal Health research Institute, Ismailia, Egypt
| | - Heba M A Abdelrazek
- Department of Physiology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt.
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Mabrouk A, Bel Hadj Salah I, Chaieb W, Ben Cheikh H. Protective effect of thymoquinone against lead-induced hepatic toxicity in rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:12206-12215. [PMID: 26971798 DOI: 10.1007/s11356-016-6419-5] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 03/03/2016] [Indexed: 06/05/2023]
Abstract
Lead (Pb) intoxication is a worldwide health problem which frequently affects the liver. This study was carried out to investigate the potential protective effect of thymoquinone (TQ), the major active ingredient of volatile oil of Nigella sativa seeds, against Pb-induced liver damage. Adult male rats were randomized into four groups: Control group received no treatment, Pb group was exposed to 2000 ppm Pb acetate in drinking water, Pb-TQ group was cotreated with Pb plus TQ (5 mg/kg/day, per orally), and TQ group receiving only TQ. All treatments were applied for 5 weeks. Results indicated that Pb exposure increased hepatic Pb content, damaged hepatic histological structure (necrotic foci, hepatic strands disorganization, hypertrophied hepatocytes, cytoplasmic vacuolization, cytoplasmic loss, chromatin condensation, mononuclear cell infiltration, congestion, centrilobular swelling), and changed liver function investigated by plasma biochemical parameters (AST, ALT, ALP, γ-GT, LDH). Pb treatment also decreased total antioxidant status level and increased lipid peroxidation in the liver. Supplementation with TQ remarkably improved the Pb-induced adverse effects without significantly reducing the metal accumulation in the liver. In conclusion, our results indicate, for the first time, a protective effect of TQ against Pb-induced hepatotoxicity and suggest that this component might be clinically useful in Pb intoxication.
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Affiliation(s)
- Aymen Mabrouk
- Laboratory of Histology and Cytogenetic (Research Unit of Genetic, Genotoxicity and Child Disease UR 12 ES 10), Faculty of Medicine, University of Monastir, Street Avicenna, Monastir, 5019, Tunisia.
| | - Imen Bel Hadj Salah
- Laboratory of Histology and Cytogenetic (Research Unit of Genetic, Genotoxicity and Child Disease UR 12 ES 10), Faculty of Medicine, University of Monastir, Street Avicenna, Monastir, 5019, Tunisia
| | - Wafa Chaieb
- Laboratory of Histology and Cytogenetic (Research Unit of Genetic, Genotoxicity and Child Disease UR 12 ES 10), Faculty of Medicine, University of Monastir, Street Avicenna, Monastir, 5019, Tunisia
| | - Hassen Ben Cheikh
- Laboratory of Histology and Cytogenetic (Research Unit of Genetic, Genotoxicity and Child Disease UR 12 ES 10), Faculty of Medicine, University of Monastir, Street Avicenna, Monastir, 5019, Tunisia
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Wildemann TM, Siciliano SD, Weber LP. The mechanisms associated with the development of hypertension after exposure to lead, mercury species or their mixtures differs with the metal and the mixture ratio. Toxicology 2016; 339:1-8. [DOI: 10.1016/j.tox.2015.11.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 10/27/2015] [Accepted: 11/17/2015] [Indexed: 12/19/2022]
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Okabe M, Miyazaki Y, Niimura F, Pastan I, Nishiyama A, Yokoo T, Ichikawa I, Matsusaka T. Unilateral ureteral obstruction attenuates intrarenal angiotensin II generation induced by podocyte injury. Am J Physiol Renal Physiol 2015; 308:F932-7. [PMID: 25673808 DOI: 10.1152/ajprenal.00444.2014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 02/06/2015] [Indexed: 01/13/2023] Open
Abstract
The renal tissue renin-angiotensin system is activated in chronic kidney diseases. We previously demonstrated that intrarenal ANG II is synthesized primarily from liver-derived angiotensinogen filtered through the glomerulus and that podocyte injury increases the passage of angiotensinogen into the tubular lumen and generation of ANG II. In the present study, we tested the effect of cessation of glomerular filtration by ureteral obstruction on renal ANG II generation in kidneys with podocyte injury under two experimental conditions. Ureteral obstruction is known to activate the renin-angiotensin system in nonproteinuric kidneys. Transgenic mice expressing hCD25 in podocyte (NEP25) were injected with 1.25 or 10 ng/g body wt of LMB2, a hCD25-targeted immunotoxin, subjected to unilateral ureteral ligation on the following day, and euthanized 7 and 4 days later, respectively. In both experiments, compared with the kidney in untreated wild-type mice, renal angiotensinogen protein, as assessed by immunostaining and Western blot analysis, was increased in the contralateral unobstructed kidney. However, it was markedly decreased in the obstructed kidney. Whereas intrarenal ANG II content was increased in the contralateral kidney compared with the untreated kidney (248 ± 83 vs. 106 ± 21 and 298 ± 185 vs. 64.8 ± 20 fmol/g kidney, respectively), this increase was suppressed in the obstructed kidney (161 ± 75 and 113 ± 34 fmol/g kidney, respectively), a pattern opposite to what we expected in obstructed kidneys without podocyte injury. Thus, our study indicates that the major source of increased renal ANG II in podocyte injury is filtered angiotensinogen.
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Affiliation(s)
- Masahiro Okabe
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan; Department of Internal Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - Yoichi Miyazaki
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Fumio Niimura
- Department of Pediatrics, Tokai University School of Medicine, Kanagawa, Japan; and
| | - Ira Pastan
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Akira Nishiyama
- Department of Pharmacology, Kagawa University School of Medicine, Kagawa, Japan
| | - Takashi Yokoo
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Iekuni Ichikawa
- Tokai University School of Medicine, Kanagawa, Japan; Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee; and Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Taiji Matsusaka
- Department of Internal Medicine, Tokai University School of Medicine, Kanagawa, Japan; Institute of Medical Science,
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Abstract
Wnt/β-catenin signaling is an evolutionarily conserved, highly complex, key developmental pathway that regulates cell fate, organ development, tissue homeostasis, as well as injury and repair. Although relatively silent in normal adult kidney, Wnt/β-catenin signaling is re-activated after renal injury in a wide variety of animal models and in human kidney disorders. Whereas some data point to a protective role of this signaling in healing and repair after acute kidney injury, increasing evidence suggests that sustained activation of Wnt/β-catenin is associated with the development and progression of renal fibrotic lesions. In kidney cells, Wnt/β-catenin promotes the expression of numerous fibrosis-related genes such as Snail1, plasminogen activator inhibitor-1, and matrix metalloproteinase-7. Recent studies also indicate that multiple components of the renin-angiotensin system are the direct downstream targets of Wnt/β-catenin. Consistently, inhibition of Wnt/β-catenin signaling by an assortment of strategies ameliorates kidney injury and mitigates renal fibrotic lesions in various models of chronic kidney disease, suggesting that targeting this signaling could be a plausible strategy for therapeutic intervention. In this mini review, we will briefly discuss the regulation, downstream targets, and mechanisms of Wnt/β-catenin signaling in the pathogenesis of kidney fibrosis.
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Moodley K, Naidoo Y, Mackraj I. Effects of Tulbaghia violacea Harv. (Alliaceae) rhizome methanolic extract on kidney function and morphology in Dahl salt-sensitive rats. JOURNAL OF ETHNOPHARMACOLOGY 2014; 155:1194-1203. [PMID: 25017374 DOI: 10.1016/j.jep.2014.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 06/12/2014] [Accepted: 07/01/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tulbaghia violacea has been used traditionally for the treatment of several ailments, including hypertension. The herb has been shown to have antihypertensive properties which have been attributed to its angiotensin-converting enzymeinhibitory (ACEI) activity. It could, therefore, prove beneficial in ameliorating renal pathology associated with hypertension. To evaluate the effects of long-term administration of Tulbaghia violacea on renal function and morphology in the Dahl salt-sensitive (DSS) rat model. MATERIALS AND METHODS Male DSS rats were treated intra-peritoneally (i.p.) as follows: methanolic extract of Tulbaghia violacea: (TVL) (50 mg/kg/b.w.), captopril: (CAP) (25 mg/kg/b.w.), or distilled water, control: (CON) (3 ml/kg/b.w.). Blood pressure (BP) was measured bi-weekly, whilst 24-h urine volumes and electrolyte concentrations were assessed weekly. Animals were sacrificed on day 49 by halothane overdose. Blood was removed for determination of plasma and serum electrolytes. Left kidney tissues were harvested for the determination of nuclear factor-kappaβ (NF-kβ) and transforming growth factor-β (TGF-β) gene expressions. RESULTS TVL significantly reduced mean arterial pressure (MAP) and diastolic blood pressure (DBP). TVL showed reduced blood urea nitrogen, serum creatinine, total protein in urine as well as increased serum total protein. TVL decreased thiobarbituric acid reactive substances (TBARS) and increased glutathione peroxidase (GPx) and superoxide dismutase (SOD) activity and nitric oxide significantly. NF-kβ and TGF-β) gene expressions were significantly reduced in TVL and CAP treated rats. Moreover, renal morphology improved significantly in TVL and CAP treated animals. CONCLUSION TVL and CAP demonstrated marked improvement in renal function and morphology.
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Affiliation(s)
- Kogi Moodley
- Department of Human Physiology, School of Basic Medical Sciences, Faculty of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Yougasphree Naidoo
- Department of Biology, School of Biological and Conservation Sciences, Faculty of Science and Agriculture, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Irene Mackraj
- Department of Human Physiology, School of Basic Medical Sciences, Faculty of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa.
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Gaspar AF, Cordellini S. Combination therapy for the cardiovascular effects of perinatal lead exposure in young and adult rats. Arq Bras Cardiol 2014; 103:219-30. [PMID: 25076181 PMCID: PMC4193069 DOI: 10.5935/abc.20140103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 04/17/2014] [Indexed: 12/03/2022] Open
Abstract
Background: Combination therapy can play a significant role in the amelioration of several
toxic effects of lead (Pb) and recovery from associated cardiovascular
changes. Objective: To investigate the effects of combination therapy on the cardiovascular effects of
perinatal lead exposure in young and adult rats Methods: Female Wistar rats received drinking water with or without 500 ppm of Pb during
pregnancy and lactation. Twenty-two- and 70-day-old rat offspring who were or were
not exposed to Pb in the perinatal period received meso-dimercaptosuccinic acid
(DMSA), L-arginine, or enalapril and a combination of these compounds for 30
additional days. Noradrenaline response curves were plotted for intact and denuded
aortas from 23-, 52-, 70-, and 100-day-old rats stratified by perinatal Pb
exposure (exposed/unexposed) and treatment received (treated/untreated). Results: Systolic blood pressure was evaluated and shown to be higher in the 23-, 52-, 70-,
and 100-day age groups with Pb exposure than in the corresponding control age
groups: 117.8 ± 3.9*, 135.2 ± 1.3*, 139.6 ± 1.6*, and 131.7
± 2.8*, respectively and 107.1 ± 1.8, 118.8 ± 2.1, 126.1
± 1.1, and 120.5 ± 2.2, respectively (p < 0.05). Increased
reactivity to noradrenaline was observed in intact, but not denuded, aortas from
52-, 70-, and 100-day-old exposed rats, and the maximum responses (g of tension)
in the respective Pb-exposed and control age groups were as follows: 3.43 ±
0.16*, 4.32 ± 0.18*, and 4.21 ± 0.23*, respectively and 2.38
± 0.33, 3.37 ± 0.13, and 3.22 ± 0.21, respectively (p <
0.05). Conclusions: All treatments reversed the changes in vascular reactivity to noradrenaline in
rats perinatally exposed to Pb. The combination therapy resulted in an earlier
restoration of blood pressure in Pb-exposed rats compared with the monotherapies,
except for enalapril therapy in young rats. These findings represent a new
approach to the development of therapeutic protocols for the treatment of
Pb-induced hypertension.
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Affiliation(s)
- Andréia Fresneda Gaspar
- Departamento de Farmacologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brazil
| | - Sandra Cordellini
- Departamento de Farmacologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brazil
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