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Gali S, Kundu A, Sharma S, Ahn MY, Puia Z, Kumar V, Kim IS, Kwak JH, Palit P, Kim HS. Therapeutic potential of bark extracts from Macaranga denticulata on renal fibrosis in streptozotocin-induced diabetic rats. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2024; 87:911-933. [PMID: 39306745 DOI: 10.1080/15287394.2024.2394586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/02/2024]
Abstract
Macaranga denticulata (MD) bark is commonly utilized in traditional medicine for diabetes prevention and treatment. The bark extract of MD is rich in prenyl or farnesyl flavonoids and stilbenes, which possess antioxidant properties. Although data suggest the potential therapeutic benefits of the use of MD in treating diabetic nephropathy (DN), the precise mechanisms underlying MD-initiated protective effects against DN are not well understood. This study aimed to assess the renoprotective properties of MD extract by examining renofibrosis inhibition, oxidative stress, and inflammation utilizing streptozotocin-induced DN male Sprague - Dawley rats. Diabetic rats were intraperitoneally injected with streptozotocin (STZ) to induce diabetes. After 6 days, these rats were orally administered MD extract (200 mg/kg/day) or metformin (200 mg/kg/day) for 14 days. The administration of MD extract significantly lowered blood glucose levels, restored body weight, and reduced urine levels of various biomarkers associated with kidney functions. Histopathological analysis revealed protective effects in both kidneys and pancreas. Further, MD extract significantly restored abnormalities in advanced glycation end products, oxidative stress biomarkers, and proinflammatory cytokine levels in STZ-treated rats. MD extract markedly reduced renal fibrosis biomarker levels, indicating recovery from renal injury, and reversed dysregulation of sirtuins and claudin-1 in the kidneys of rats with STZ-induced diabetes. In conclusion, data demonstrated the renoprotective role of MD extract, indicating plant extract's ability to suppress oxidative stress and regulate proinflammatory pathways during pathological changes in diabetic nephropathy.
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Affiliation(s)
- Sreevarsha Gali
- School of Pharmacy, Sungkyunkwan University, School of Pharmacy University, Suwon, Republic of Korea
| | - Amit Kundu
- School of Pharmacy, Sungkyunkwan University, School of Pharmacy University, Suwon, Republic of Korea
- Department of Pharmacology, GITAM School of Pharmacy, GITAM Deemed to be University, Visakhapatnam, India
| | - Swati Sharma
- School of Pharmacy, Sungkyunkwan University, School of Pharmacy University, Suwon, Republic of Korea
| | - Mee-Young Ahn
- Department of Biochemistry and Health Science, Changwon National University, Changwon-si, Republic of Korea
| | - Zothan Puia
- Department of Pharmacy, Regional Institute of Paramedical & Nursing Sciences, Aizawl, India
| | - Vikas Kumar
- Natural Product Drug Discovery Laboratory, Department of Pharmaceutical Sciences, Faculty of Health Sciences, Sam Higginbottom Institute of Agriculture, Technology & Sciences, Allahabad, India
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, School of Pharmacy University, Suwon, Republic of Korea
| | - Jeong Hwan Kwak
- School of Pharmacy, Sungkyunkwan University, School of Pharmacy University, Suwon, Republic of Korea
| | - Partha Palit
- Department of Pharmaceutical Sciences, Drug Discovery Research Laboratory, Assam University, Silchar, India
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, School of Pharmacy University, Suwon, Republic of Korea
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Jiajun W, Kaifeng G, Jing Z. Urinary PKM2, a marker predicating acute kidney injury in patients with sepsis. Int Urol Nephrol 2024; 56:3039-3045. [PMID: 38635124 DOI: 10.1007/s11255-024-04054-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 04/09/2024] [Indexed: 04/19/2024]
Abstract
PURPOSE Acute kidney injury (AKI) is a complication commonly occurred in patients with sepsis, and AKI has become the leading cause associated with mortality. PKM2, as a rate-limiting enzyme of glycolysis, was considered to be involved in AKI in vitro and animal models. However, there have been no studies reported on the expression of PKM2 in humans and its association with AKI. METHODS A retrospective study including 57 patients (35 males and 22 females) that were admitted into hospital in 2019 was carried out in our research. The basic characteristics and clinical parameters of each patient were collected from patients' medical records. We assessed changes in the expression of serum and urinary PKM2 using ELISA and its association with clinical manifestations in patients with sepsis through correlation analysis. Besides, ROC analysis was applied for evaluating the role of PKM2 in predicting AKI and death rate. RESULTS Urinary PKM2 is obviously increased in patients with sepsis-associated AKI (P < 0.05), while no significant change was found in the expression of serum PKM2. Moreover, the expression of urinary PKM2 is positively correlated with serum creatinine (r=0.577, P < 0.01) and blood-urea-nitrogen (r=0.531, P<0.01). In addition, it is negatively correlated with glomerular filtration rate (r=-0.583, P<0.01). Besides, ROC analysis indicated that urinary PKM2 could be a predictor of AKI in patients with sepsis (AUC-ROC, 0.819; SE, 0.086, P = 0.004, 95% CI 0.651-0.986). CONCLUSIONS Urinary PKM2 could be a marker predicting acute kidney injury in patients with sepsis.
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Affiliation(s)
- Wu Jiajun
- Department of Emergency, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guo Kaifeng
- Department of Endocrinology and Metabolism, Minhang Hospital, Fudan University, Shanghai, China
| | - Zhou Jing
- Department of Nephrology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 HaiNing Road, Shanghai, 200080, China.
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Chen DQ, Han J, Liu H, Feng K, Li P. Targeting pyruvate kinase M2 for the treatment of kidney disease. Front Pharmacol 2024; 15:1376252. [PMID: 38910890 PMCID: PMC11190346 DOI: 10.3389/fphar.2024.1376252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 04/05/2024] [Indexed: 06/25/2024] Open
Abstract
Pyruvate kinase M2 (PKM2), a rate limiting enzyme in glycolysis, is a cellular regulator that has received extensive attention and regards as a metabolic regulator of cellular metabolism and energy. Kidney is a highly metabolically active organ, and glycolysis is the important energy resource for kidney. The accumulated evidences indicates that the enzymatic activity of PKM2 is disturbed in kidney disease progression and treatment, especially diabetic kidney disease and acute kidney injury. Modulating PKM2 post-translational modification determines its enzymatic activity and nuclear translocation that serves as an important interventional approach to regulate PKM2. Emerging evidences show that PKM2 and its post-translational modification participate in kidney disease progression and treatment through modulating metabolism regulation, podocyte injury, fibroblast activation and proliferation, macrophage polarization, and T cell regulation. Interestingly, PKM2 activators (TEPP-46, DASA-58, mitapivat, and TP-1454) and PKM2 inhibitors (shikonin, alkannin, compound 3k and compound 3h) have exhibited potential therapeutic property in kidney disease, which indicates the pleiotropic effects of PKM2 in kidney. In the future, the deep investigation of PKM2 pleiotropic effects in kidney is urgently needed to determine the therapeutic effect of PKM2 activator/inhibitor to benefit patients. The information in this review highlights that PKM2 functions as a potential biomarker and therapeutic target for kidney diseases.
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Affiliation(s)
- Dan-Qian Chen
- College of Life Sciences, Northwest University, Xi’an, Shaanxi, China
| | - Jin Han
- College of Life Sciences, Northwest University, Xi’an, Shaanxi, China
- Department of Nephrology, Xi’an Chang’an District Hospital, Xi’an, Shaanxi, China
| | - Hui Liu
- College of Life Sciences, Northwest University, Xi’an, Shaanxi, China
| | - Kai Feng
- College of Life Sciences, Northwest University, Xi’an, Shaanxi, China
| | - Ping Li
- Beijing Key Lab for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China
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Chen Y, Bai X, Chen J, Huang M, Hong Q, Ouyang Q, Sun X, Zhang Y, Liu J, Wang X, Wu L, Chen X. Pyruvate kinase M2 regulates kidney fibrosis through pericyte glycolysis during the progression from acute kidney injury to chronic kidney disease. Cell Prolif 2024; 57:e13548. [PMID: 37749923 PMCID: PMC10849781 DOI: 10.1111/cpr.13548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/30/2023] [Accepted: 09/02/2023] [Indexed: 09/27/2023] Open
Abstract
We aimed to investigate the role of renal pericyte pyruvate kinase M2 (PKM2) in the progression of acute kidney injury (AKI) to chronic kidney disease (CKD). The role of PKM2 in renal pericyte-myofibroblast transdifferentiation was investigated in an AKI-CKD mouse model. Platelet growth factor receptor beta (PDGFRβ)-iCreERT2; tdTomato mice were used for renal pericyte tracing. Western blotting and immunofluorescence staining were used to examine protein expression. An 5-ethynyl-2'-deoxyuridine assay was used to measure renal pericyte proliferation. A scratch cell migration assay was used to analyse cell migration. Seahorse experiments were used to examine glycolytic rates. Enzyme-linked immunoassay was used to measure pyruvate kinase enzymatic activity and lactate concentrations. The PKM2 nuclear translocation inhibitors Shikonin and TEPP-46 were used to alter pericyte transdifferentiation. In AKI-CKD, renal pericytes proliferated and transdifferentiated into myofibroblasts and PKM2 is highly expressed in renal pericytes. Shikonin and TEPP-46 inhibited pericyte proliferation, migration, and pericyte-myofibroblast transdifferentiation by reducing nuclear PKM2 entry. In the nucleus, PKM2 promoted downstream lactate dehydrogenase A (LDHA) and glucose transporter 1 (GLUT1) transcription, which are critical for glycolysis. Therefore, PKM2 regulates pericyte glycolytic and lactate production, which regulates renal pericyte-myofibroblast transdifferentiation. PKM2-regulated renal pericyte-myofibroblast transdifferentiation by regulating downstream LDHA and GLUT1 transcription and lactate production. Reducing nuclear PKM2 import can reduce renal pericytes-myofibroblasts transdifferentiation, providing new ideas for AKI-CKD treatment.
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Affiliation(s)
- Yulan Chen
- Department of NephrologyFirst Medical Center of Chinese PLA General Hospital, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases ResearchBeijingChina
- Chinese PLA Medical SchoolBeijingChina
| | - Xueyuan Bai
- Department of NephrologyFirst Medical Center of Chinese PLA General Hospital, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases ResearchBeijingChina
| | - Jianwen Chen
- Department of NephrologyFirst Medical Center of Chinese PLA General Hospital, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases ResearchBeijingChina
| | - Mengjie Huang
- Department of NephrologyFirst Medical Center of Chinese PLA General Hospital, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases ResearchBeijingChina
| | - Quan Hong
- Department of NephrologyFirst Medical Center of Chinese PLA General Hospital, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases ResearchBeijingChina
| | - Qing Ouyang
- Department of NephrologyFirst Medical Center of Chinese PLA General Hospital, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases ResearchBeijingChina
| | - Xuefeng Sun
- Department of NephrologyFirst Medical Center of Chinese PLA General Hospital, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases ResearchBeijingChina
| | - Yan Zhang
- Department of NephrologyFirst Medical Center of Chinese PLA General Hospital, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases ResearchBeijingChina
- Chinese PLA Medical SchoolBeijingChina
| | - Jiaona Liu
- Department of NephrologyFirst Medical Center of Chinese PLA General Hospital, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases ResearchBeijingChina
| | - Xu Wang
- Department of NephrologyFirst Medical Center of Chinese PLA General Hospital, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases ResearchBeijingChina
| | - Lingling Wu
- Department of NephrologyFirst Medical Center of Chinese PLA General Hospital, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases ResearchBeijingChina
| | - Xiangmei Chen
- Department of NephrologyFirst Medical Center of Chinese PLA General Hospital, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases ResearchBeijingChina
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Xie W, He Q, Zhang Y, Xu X, Wen P, Cao H, Zhou Y, Luo J, Yang J, Jiang L. Pyruvate kinase M2 regulates mitochondrial homeostasis in cisplatin-induced acute kidney injury. Cell Death Dis 2023; 14:663. [PMID: 37816709 PMCID: PMC10564883 DOI: 10.1038/s41419-023-06195-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 09/21/2023] [Accepted: 09/28/2023] [Indexed: 10/12/2023]
Abstract
An important pathophysiological process of acute kidney injury (AKI) is mitochondrial fragmentation in renal tubular epithelial cells, which leads to cell death. Pyruvate kinase M2 (PKM2) is an active protein with various biological functions that participates in regulating glycolysis and plays a key role in regulating cell survival. However, the role and mechanism of PKM2 in regulating cell survival during AKI remain unclear. Here, we found that the phosphorylation of PKM2 contributed to the formation of the PKM2 dimer and translocation of PKM2 into the mitochondria after treatment with staurosporine or cisplatin. Mitochondrial PKM2 binds myosin heavy chain 9 (MYH9) to promote dynamin-related protein 1 (DRP1)-mediated mitochondrial fragmentation. Both in vivo and in vitro, PKM2-specific loss or regulation PKM2 activity partially limits mitochondrial fragmentation, alleviating renal tubular injury and cell death, including apoptosis, necroptosis, and ferroptosis. Moreover, staurosporine or cisplatin-induced mitochondrial fragmentation and cell death were reversed in cultured cells by inhibiting MYH9 activity. Taken together, our results indicate that the regulation of PKM2 abundance and activity to inhibit mitochondrial translocation may maintain mitochondrial integrity and provide a new therapeutic strategy for treating AKI.
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Affiliation(s)
- Wenjia Xie
- Center for Kidney Disease, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Qingyun He
- Center for Kidney Disease, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Yan Zhang
- Center for Kidney Disease, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Xinxin Xu
- Center for Kidney Disease, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Ping Wen
- Center for Kidney Disease, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Hongdi Cao
- Center for Kidney Disease, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Yang Zhou
- Center for Kidney Disease, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China.
| | - Jing Luo
- Center for Kidney Disease, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China.
| | - Junwei Yang
- Center for Kidney Disease, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China.
| | - Lei Jiang
- Center for Kidney Disease, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China.
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Ortega-Romero M, Jiménez-Córdova MI, Barrera-Hernández Á, Sepúlveda-González ME, Narvaez-Morales J, Aguilar-Madrid G, Juárez-Pérez CA, Del Razo LM, Cruz-Angulo MDC, Mendez-Hernández P, Medeiros M, Barbier OC. Relationship between urinary biomarkers of early kidney damage and exposure to inorganic toxins in a pediatric population of Apizaco, Tlaxcala, Mexico. J Nephrol 2023; 36:1383-1393. [PMID: 37253904 DOI: 10.1007/s40620-023-01598-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 02/12/2023] [Indexed: 06/01/2023]
Abstract
BACKGROUND In recent years, chronic kidney disease has increased in the pediatric population and has been related to environmental factors. In the diagnosis of kidney damage, in addition to the traditional parameters, early kidney damage biomarkers, such as kidney injury molecule 1, cystatin C, and osteopontin, among others, have been implemented as predictors of early pathological processes. OBJECTIVE This study aimed to evaluate the relationship between exposure to environmental pollutants and early kidney damage biomarkers. METHODS A cross-sectional pilot study was conducted in February 2016 and involved 115 apparently healthy children aged 6-15 residing in Apizaco, Tlaxcala. Participant selection was carried out randomly from among 16,472 children from the municipality of Apizaco. A socio-demographic questionnaire included age, sex, education, duration of residence in the area, occupation, water consumption and dietary habits, pathological history, and some non-specific symptoms. Physical examination included blood pressure, weight, and height. The urine concentrations of urinary aluminum, total arsenic, boron, calcium, chromium, copper, mercury, potassium, sodium, magnesium, manganese, molybdenum, lead, selenium, silicon, thallium, vanadium, uranium, and zinc, were measured. Four of the 115 participants selected for the study were excluded due to an incomplete questionnaire or lack of a medical examination, leaving a final sample population of 111 participants. RESULTS The results showed a mean estimated glomerular filtration rate of 89.1 ± 9.98 mL/min/1.73m2 and a mean albumin/creatinine ratio of 12.9 ± 16.7 mg/g urinary creatinine. We observed a positive and significant correlation between estimated glomerular filtration rate with fluoride, total arsenic and lead, and a correlation of albumin/creatinine ratio with fluoride, vanadium, and total arsenic. There was also a significant correlation between the early kidney damage biomarkers and fluoride, vanadium, and total arsenic, except for cystatin C. CONCLUSION In conclusion, our results show that four urinary biomarkers: α1-microglobulin, cystatin C, kidney injury molecule 1, and neutrophil gelatinase-associated lipocalin are related to environmental exposure to urinary fluoride, vanadium, and total arsenic in our pediatric population.
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Affiliation(s)
- Manolo Ortega-Romero
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, México
- Unidad de Investigación en Nefrología y Metabolismo Mineral Óseo, Hospital Infantil de México Federico Gómez, Mexico City, México
| | - Mónica I Jiménez-Córdova
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, México
- Secretaría de Investigación y Posgrado, Instituto Politécnico Nacional (SIP-IPN), Mexico City, México
| | - Ángel Barrera-Hernández
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, México
| | - María Eugenia Sepúlveda-González
- Unidad de Investigación en Nefrología y Metabolismo Mineral Óseo, Hospital Infantil de México Federico Gómez, Mexico City, México
| | - Juana Narvaez-Morales
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, México
| | - Guadalupe Aguilar-Madrid
- Claustro Universitario de Chihuahua, Dirección de Investigación y de Posgrado, Chihuahua, México
| | - Cuauhtémoc Arturo Juárez-Pérez
- Unidad de Investigación de Salud en El Trabajo, Centro Médico Nacional SXXI Instituto Mexicano del Seguro Social, Mexico City, México
| | - Luz María Del Razo
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, México
| | | | - Pablo Mendez-Hernández
- Departamento de Calidad y Educación en Salud, Secretaría de Salud de Tlaxcala, Tlaxcala, México
- Facultad de Ciencias de La Salud, Universidad Autónoma de Tlaxcala, Tlaxcala, México
| | - Mara Medeiros
- Unidad de Investigación en Nefrología y Metabolismo Mineral Óseo, Hospital Infantil de México Federico Gómez, Mexico City, México
- Departamento de Farmacología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, México
| | - Olivier Christophe Barbier
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, México.
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Maheshwari N, Khan AA, Mahmood R. Pentachlorophenol causes redox imbalance, inhibition of brush border membrane and metabolic enzymes, DNA damage and histological alterations in rat kidney. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 190:105318. [PMID: 36740338 DOI: 10.1016/j.pestbp.2022.105318] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 12/03/2022] [Accepted: 12/14/2022] [Indexed: 06/18/2023]
Abstract
Pentachlorophenol (PCP) is a synthetic organochlorine compound that is widely used in biocide and pesticide industries, and in preservation of wood, fence posts, cross arms and power line poles. Humans are usually exposed to PCP through air, contaminated water and food. PCP enters the body and adversely affects liver, gastrointestinal tract, kidney and lungs. PCP is a highly toxic class 2B or probable human carcinogen that produces large amount of reactive oxygen species (ROS) within cells. This work aimed to determine PCP-induced oxidative damage in rat kidney. Adult rats were given PCP (25, 50, 100, 150 mg/kg body weight), in corn oil, once a day for 5 days while control rats were given similar amount of corn oil by oral gavage. PCP increased hydrogen peroxide level and oxidation of thiols, proteins and lipids. The antioxidant status of kidney cells was compromised in PCP treated rats while enzymes of brush border membrane (BBM) and carbohydrate metabolism were inhibited. Plasma level of creatinine and urea was also increased. Administration of PCP increased DNA fragmentation, cross-linking of DNA to proteins and DNA strand scission in kidney. Histological studies supported biochemical findings and showed significant damage in the kidneys of PCP-treated rats. These changes could be due to redox imbalance or direct chemical modification by PCP or its metabolites. These results signify that PCP-induced oxidative stress causes nephrotoxicity, dysfunction of BBM enzymes and DNA damage.
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Affiliation(s)
- Nikhil Maheshwari
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India
| | - Aijaz Ahmed Khan
- Department of Anatomy, J. N. Medical College, Aligarh Muslim University, Aligarh 202002, U.P., India
| | - Riaz Mahmood
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India; Department of Anatomy, J. N. Medical College, Aligarh Muslim University, Aligarh 202002, U.P., India.
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Park YS, Han JH, Park JH, Choi JS, Kim SH, Kim HS. Pyruvate Kinase M2: A New Biomarker for the Early Detection of Diabetes-Induced Nephropathy. Int J Mol Sci 2023; 24:ijms24032683. [PMID: 36769016 PMCID: PMC9916947 DOI: 10.3390/ijms24032683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 02/04/2023] Open
Abstract
Diabetic nephropathy (DN) is a common complication of diabetes. DN progresses to end-stage renal disease, which has a high mortality rate. Current research is focused on identifying non-invasive potential biomarkers in the early stage of DN. We previously indicated that pyruvate kinase M2 (PKM2) is excreted in the urine of rats after cisplatin-induced acute kidney injury (AKI). However, it has not been reported whether PKM2 can be used as a biomarker to diagnose DN. Therefore, we try to compare whether the protein PKM2 can be detected in the urine samples from diabetic patients as shown in the results of DN models. In this study, high-fat diet (HFD)-induced Zucker diabetic fatty (ZDF) rats were used for DN phenotyping. After 19 weeks of receiving a HFD, the DN model's blood glucose, blood urea nitrogen, and serum creatinine levels were significantly increased; severe tubular and glomerular damages were also noted. The following protein-based biomarkers were increased in the urine of these models: kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), and PKM2. PKM2 had the earliest detection rate. In the urine samples of patients, PKM2 protein was highly detected in the urine of diabetic patients but was not excreted in the urine of normal subjects. Therefore, PKM2 was selected as the new biomarker for the early diagnosis of DN. Our results reflect current knowledge on the role of PKM2 in DN.
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Affiliation(s)
- Yeon Su Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Joo Hee Han
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jae Hyeon Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ji Soo Choi
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Seung Hyeon Kim
- St. Mark’s School, 25 Marlboro Rd, Southborough, MA 01772, USA
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Correspondence: ; Tel.:+82-31-290-7789
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Dey P, Kundu A, Lee HE, Kar B, Vishal V, Dash S, Kim IS, Bhakta T, Kim HS. Molineria recurvata Ameliorates Streptozotocin-Induced Diabetic Nephropathy through Antioxidant and Anti-Inflammatory Pathways. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27154985. [PMID: 35956936 PMCID: PMC9370403 DOI: 10.3390/molecules27154985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/28/2022] [Accepted: 08/01/2022] [Indexed: 11/23/2022]
Abstract
Molineria recurvata (MR) has been traditionally used to manage diabetes mellitus in India. However, the molecular mechanism of MR on the diabetic-induced nephropathy has not been clearly investigated. Thus, this study investigates the protective effects of the MR extract on nephropathy in streptozotocin (STZ)-induced diabetic rats. Diabetes was instigated by a single intraperitoneal injection of STZ (45 mg/kg) in male Sprague-Dawley rats. Once the diabetes was successfully induced, the MR extract (200 mg/kg/day) or metformin (200 mg/kg/day) was orally administered for 14 days. Renal function, morphology changes and levels of inflammatory cytokines were measured. Blood glucose concentrations were considerably reduced in STZ-induced diabetic rats following treatment with the MR extract. The administration of the MR extract substantially restored the abnormal quantity of the oxidative DNA damage marker 8-hydroxy-2′-deoxy-guanosine (8-OHdG), malondialdehyde, glutathione, oxidized glutathione, superoxide dismutase, catalase, interleukin (IL)-1β, IL-6, IL-10, and transforming growth factor-β (TGF-β). The urinary excretion of kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), selenium binding protein 1 (SBP1), and pyruvate kinase M2 (PKM2) was significantly reduced in diabetes rats after administration of the MR extracts. In the kidneys of STZ-induced diabetic rats, the MR extracts markedly downregulated the expression of fibronectin, collagen-1, and α-smooth muscle actin (α-SMA). In particular, the MR extracts markedly increased the level of SIRT1 and SIRT3 and reduced claudin-1 in the kidney. These results suggest that the MR extracts exhibits therapeutic activity in contrast to renal injury in STZ-induced diabetic rats through repressing inflammation and oxidative stress.
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Affiliation(s)
- Prasanta Dey
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea
| | - Amit Kundu
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea
| | - Ha Eun Lee
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea
| | - Babli Kar
- Bengal Homoeopathic Medical College and Hospital, Asansol 713301, India
| | - Vineet Vishal
- Department of Botany, Bangabasi Evening College, Kolkata 700009, India
| | - Suvakanta Dash
- Regional Institute of Pharmaceutical Science & Technology, Agartala 799006, India
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea
| | - Tejendra Bhakta
- Regional Institute of Pharmaceutical Science & Technology, Agartala 799006, India
- Correspondence: (T.B.); (H.S.K.)
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea
- Correspondence: (T.B.); (H.S.K.)
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10
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Alquraishi M, Chahed S, Alani D, Puckett DL, Dowker PD, Hubbard K, Zhao Y, Kim JY, Nodit L, Fatima H, Donohoe D, Voy B, Chowanadisai W, Bettaieb A. Podocyte specific deletion of PKM2 ameliorates LPS-induced podocyte injury through beta-catenin. Cell Commun Signal 2022; 20:76. [PMID: 35637461 PMCID: PMC9150347 DOI: 10.1186/s12964-022-00884-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 04/19/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Acute kidney injury (AKI) is associated with a severe decline in kidney function caused by abnormalities within the podocytes' glomerular matrix. Recently, AKI has been linked to alterations in glycolysis and the activity of glycolytic enzymes, including pyruvate kinase M2 (PKM2). However, the contribution of this enzyme to AKI remains largely unexplored. METHODS Cre-loxP technology was used to examine the effects of PKM2 specific deletion in podocytes on the activation status of key signaling pathways involved in the pathophysiology of AKI by lipopolysaccharides (LPS). In addition, we used lentiviral shRNA to generate murine podocytes deficient in PKM2 and investigated the molecular mechanisms mediating PKM2 actions in vitro. RESULTS Specific PKM2 deletion in podocytes ameliorated LPS-induced protein excretion and alleviated LPS-induced alterations in blood urea nitrogen and serum albumin levels. In addition, PKM2 deletion in podocytes alleviated LPS-induced structural and morphological alterations to the tubules and to the brush borders. At the molecular level, PKM2 deficiency in podocytes suppressed LPS-induced inflammation and apoptosis. In vitro, PKM2 knockdown in murine podocytes diminished LPS-induced apoptosis. These effects were concomitant with a reduction in LPS-induced activation of β-catenin and the loss of Wilms' Tumor 1 (WT1) and nephrin. Notably, the overexpression of a constitutively active mutant of β-catenin abolished the protective effect of PKM2 knockdown. Conversely, PKM2 knockdown cells reconstituted with the phosphotyrosine binding-deficient PKM2 mutant (K433E) recapitulated the effect of PKM2 depletion on LPS-induced apoptosis, β-catenin activation, and reduction in WT1 expression. CONCLUSIONS Taken together, our data demonstrates that PKM2 plays a key role in podocyte injury and suggests that targetting PKM2 in podocytes could serve as a promising therapeutic strategy for AKI. TRIAL REGISTRATION Not applicable. Video abstract.
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Affiliation(s)
- Mohammed Alquraishi
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN 37996-0840 USA
- Present Address: Department of Community Health Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Samah Chahed
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN 37996-0840 USA
| | - Dina Alani
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN 37996-0840 USA
| | - Dexter L. Puckett
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN 37996-0840 USA
| | - Presley D. Dowker
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN 37996-0840 USA
| | - Katelin Hubbard
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN 37996-0840 USA
| | - Yi Zhao
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN 37996-0840 USA
- Present Address: Kellogg Eye Center, University of Michigan, Ann Arbor, MI 48105 USA
| | - Ji Yeon Kim
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN 37996-0840 USA
| | - Laurentia Nodit
- Department of Pathology, University of Tennessee Medical Center, Knoxville, TN 37920 USA
| | - Huma Fatima
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL USA
| | - Dallas Donohoe
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN 37996-0840 USA
| | - Brynn Voy
- Tennessee Agricultural Experiment Station, University of Tennessee Institute of Agriculture, Knoxville, TN 37996-0840 USA
- Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN 37996-0840 USA
| | - Winyoo Chowanadisai
- Department of Nutrition, Oklahoma State University, Stillwater, OK 74078 USA
| | - Ahmed Bettaieb
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN 37996-0840 USA
- Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN 37996-0840 USA
- Department of Biochemistry, Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996-0840 USA
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11
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Tan H, Chen J, Li Y, Li Y, Zhong Y, Li G, Liu L, Li Y. Glabridin, a bioactive component of licorice, ameliorates diabetic nephropathy by regulating ferroptosis and the VEGF/Akt/ERK pathways. Mol Med 2022; 28:58. [PMID: 35596156 PMCID: PMC9123664 DOI: 10.1186/s10020-022-00481-w] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 04/19/2022] [Indexed: 12/20/2022] Open
Abstract
Background Glabridin (Glab) is a bioactive component of licorice that can ameliorate diabetes, but its role in diabetic nephropathy (DN) has seldom been reported. Herein, we explored the effect and underlying mechanism of Glab on DN. Methods The bioactive component-target network of licorice against DN was by a network pharmacology approach. The protective effect of Glab on the kidney was investigated by a high-fat diet with streptozotocin induced-diabetic rat model. High glucose-induced NRK-52E cells were used for in vitro studies. The effects of Glab on ferroptosis and VEGF/Akt/ERK pathways in DN were investigated in vivo and in vitro using qRT-PCR, WB, and IHC experiments. Results Bioinformatics analysis constructed a network comprising of 10 bioactive components of licorice and 40 targets for DN. 13 matching targets of Glab were mainly involved in the VEGF signaling pathway. Glab treatment ameliorated general states and reduced FBG, HOMA-β, and HOMA-insulin index of diabetic rats. The renal pathological changes and the impaired renal function (the increased levels of Scr, BUN, UREA, KIM-1, NGAL, and TIMP-1) were also improved by Glab. Moreover, Glab repressed ferroptosis by increasing SOD and GSH activity, and GPX4, SLC7A11, and SLC3A2 expression, and decreasing MDA and iron concentrations, and TFR1 expression, in vivo and in vitro. Mechanically, Glab significantly suppressed VEGF, p-AKT, p-ERK1/2 expression in both diabetic rats and HG-induced NRK-52E cells. Conclusions This study revealed protective effects of Glab on the kidney of diabetic rats, which might exert by suppressing ferroptosis and the VEGF/Akt/ERK pathway.
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Affiliation(s)
- Hongtao Tan
- Department of Traditional Chinese Medicine, Huizhou Municipal Central Hospital, Huicheng District, No. 41 Eling North Road, Huizhou, 516000, Guangdong, China
| | - Junxian Chen
- The First College of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yicong Li
- Department of Traditional Chinese Medicine, Huizhou Municipal Central Hospital, Huicheng District, No. 41 Eling North Road, Huizhou, 516000, Guangdong, China
| | - Yingshan Li
- Department of Traditional Chinese Medicine, Huizhou Municipal Central Hospital, Huicheng District, No. 41 Eling North Road, Huizhou, 516000, Guangdong, China
| | - Yunchang Zhong
- Department of Traditional Chinese Medicine, Huizhou Municipal Central Hospital, Huicheng District, No. 41 Eling North Road, Huizhou, 516000, Guangdong, China
| | - Guangzhao Li
- Department of Traditional Chinese Medicine, Huizhou Municipal Central Hospital, Huicheng District, No. 41 Eling North Road, Huizhou, 516000, Guangdong, China
| | - Lingling Liu
- Department of Traditional Chinese Medicine, Huizhou Municipal Central Hospital, Huicheng District, No. 41 Eling North Road, Huizhou, 516000, Guangdong, China.
| | - Yiqun Li
- Department of Traditional Chinese Medicine, Huizhou Municipal Central Hospital, Huicheng District, No. 41 Eling North Road, Huizhou, 516000, Guangdong, China.
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12
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Chen J, Chen Q, Zhang J, Pan L, Zha T, Zhang Y, Chen J. Value of T2 Mapping in the Dynamic Evaluation of Renal Ischemia-Reperfusion Injury. Acad Radiol 2022; 29:376-381. [PMID: 33836945 DOI: 10.1016/j.acra.2021.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 03/01/2021] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To explore the value of T2 mapping in the dynamic quantitative evaluation of renal ischemia- reperfusion injury (IRI). MATERIALS AND METHODS Forty-eight healthy New Zealand rabbits were randomly divided into IRI group (n = 40) and control group (n = 8). Rabbits in the IRI group underwent left renal artery clamping for 60 minutes. Rabbits underwent MRI examinations (T2WI and T2 mapping) before and 1, 12, 24, and 48 hours after IRI. The inter-observer and intra-observer reproducibility of the T2 values were assessed using the intraclass correlation coefficient (ICC) with 95% confidence interval (CI). Correlations between the T2 value of the renal outer medulla and injury scores were assessed by Spearman correlation analysis. The repeated measures analysis of variance was used to compare the differences in T2 values of the IRI and control group across the different time points. RESULTS Both of the intra-observer (ICC = 0.97, 95% CI 0.95-0.99) and inter-observer reproducibility (ICC = 0.92, 95% CI 0.86-0.96) were excellent for T2 values. The T2 value of the renal outer medulla was moderately positive correlated with tubular epithelial edema (ρ = 0.686, p < 0.001). In IRI group, T2 values of the renal outer medulla were increase at 1 h after IRI (p = 0.001) and were decrease from 1 h to 12 h (p = 0.002). At 1 h after IRI, the T2 values of the renal outer medulla for the IRI group were higher than those for the control group (p < 0.001). CONCLUSION T2 mapping can reflect the dynamic changes of renal parenchyma in an animal model of IRI and be used to assess the early renal IRI.
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Affiliation(s)
- Jing Chen
- Department of Radiology, Third Affiliated Hospital of Soochow University, 185 Juqian Street, Changzhou 213003, Jiangsu, China
| | - Qin Chen
- Department of Radiology, Third Affiliated Hospital of Soochow University, 185 Juqian Street, Changzhou 213003, Jiangsu, China
| | - Jinggang Zhang
- Department of Radiology, Third Affiliated Hospital of Soochow University, 185 Juqian Street, Changzhou 213003, Jiangsu, China
| | - Liang Pan
- Department of Radiology, Third Affiliated Hospital of Soochow University, 185 Juqian Street, Changzhou 213003, Jiangsu, China
| | - Tingting Zha
- Department of Radiology, Third Affiliated Hospital of Soochow University, 185 Juqian Street, Changzhou 213003, Jiangsu, China
| | - Yongcheng Zhang
- Department of Radiology, Third Affiliated Hospital of Soochow University, 185 Juqian Street, Changzhou 213003, Jiangsu, China
| | - Jie Chen
- Department of Radiology, Third Affiliated Hospital of Soochow University, 185 Juqian Street, Changzhou 213003, Jiangsu, China.
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13
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Kim HR, Park JH, Lee SH, Kwack SJ, Lee J, Kim S, Yoon S, Kim KB, Lee BM, Kacew S, Kim HS. Using intracellular metabolic profiling to identify novel biomarkers of cisplatin-induced acute kidney injury in NRK-52E cells. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2022; 85:29-42. [PMID: 34445936 DOI: 10.1080/15287394.2021.1969305] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The aim of this study was to investigate changes in the intracellular metabolism resulting from cisplatin (CDDP)-induced nephrotoxicity in normal kidney tubular epithelial NRK-52E cells. Cytotoxicity, cell cycle analysis, and apoptotic cell death were all evaluated in NRK-52E cells treated with CDDP. Subsequently, proton nuclear magnetic resonance (1H-NMR) spectroscopy was used to investigate cellular metabolic profiles. CDDP-induced nephrotoxicity was determined in vivo model. Cytotoxicity in the NRK-52E cells significantly rose following treatment with CDDP and these increases were found to be concentration-dependent. Both p53 and Bax protein expression was increased in CDDP-treated NRK-52E cells, correlating with enhanced cellular apoptosis. In addition, a number of metabolites were altered in both media and cell lysates in these cells. In cell lysates, citrate, creatinine, and acetate levels were dramatically reduced following treatment with 20 µM CDDP concentrations, while glutamate level was elevated. Lactate and acetate levels were significantly increased in culture media but citrate concentrations were reduced following high 20 µM CDDP concentrations incubation. In addition, excretion of clusterin, calbindin, neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecule-1 (KIM-1), selenium binding protein 1 (SBP1), and pyruvate kinase M2 (PKM2) into the culture media was significantly increased in CDDP-treated cells while expression of acetyl CoA synthetase 1 (AceCS1) was markedly reduced in these cells. These findings suggest that acetate-dependent metabolic pathway may be a reliable and useful biomarker for detecting CDDP-induced nephrotoxicity. Taken together, data demonstrate that the discovery of novel biomarkers by metabolite profiling in target cells may contribute to the detection of nephrotoxicity and new drug development.
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Affiliation(s)
- Hae Ri Kim
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Jae Hyeon Park
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Song Hee Lee
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Seung Jun Kwack
- Department of Biochemistry and Health Science, Changwon National University, Gyeongnam, Republic of Korea
| | - Jaewon Lee
- Department of Neuroscience, College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Suhkmann Kim
- Department of Chemistry and Chemistry Institute of Functional Materials, Pusan National University, Busan, Republic of Korea
| | - Sungpil Yoon
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Kyu-Bong Kim
- Department of Toxicology, College of Pharmacy, Dankook University, Chungnam, Republic of Korea
| | - Byung Mu Lee
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Sam Kacew
- Department of Cellular and Molecular Medicine, McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada
| | - Hyung Sik Kim
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
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14
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Pyruvate Kinase, Inflammation and Periodontal Disease. Pathogens 2021; 10:pathogens10070784. [PMID: 34206267 PMCID: PMC8308603 DOI: 10.3390/pathogens10070784] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/08/2021] [Accepted: 06/20/2021] [Indexed: 11/17/2022] Open
Abstract
Pyruvate kinase (PK) is the final and rate-limiting enzyme in glycolysis. It has four isoforms PKM1, PKM2, PKL and PKR. PK can form homo tetramers, dimers or monomers. The tetrameric form has the most catalytic activity; however, the dimeric form has non-canonical functions that contribute to the inflammatory response, wound healing and cellular crosstalk. This brief review explores these functions and speculates on their role in periodontal disease.
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15
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Hallows KR, Althouse AD, Li H, Saitta B, Abebe KZ, Bae KT, Miskulin DC, Perrone RD, Seliger SL, Watnick TJ. Association of Baseline Urinary Metabolic Biomarkers with ADPKD Severity in TAME-PKD Clinical Trial Participants. KIDNEY360 2021; 2:795-808. [PMID: 34316721 PMCID: PMC8312696 DOI: 10.34067/kid.0005962020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Recent work suggests that dysregulated cellular metabolism may play a key role in the pathogenesis of autosomal dominant polycystic kidney disease (ADPKD). The TAME-PKD clinical trial is testing the safety, tolerability, and efficacy of metformin, a regulator of cell metabolism, in patients with ADPKD. This study investigates the cross-sectional association of urinary metabolic biomarkers with ADPKD severity among TAME-PKD trial participants at baseline. METHODS Concentrations of total protein, targeted metabolites (lactate, pyruvate, succinate, and cAMP), and key glycolytic enzymes (pyruvate kinase M2 [PKM2], lactate dehydrogenase A [LDHA], and pyruvate dehydrogenase kinase 1 [PDK1]) were measured by ELISA, enzymatic assays, and immunoblotting in baseline urine specimens of 95 TAME-PKD participants. These analytes, normalized by urinary creatinine or osmolality to estimate excretion, were correlated with patients' baseline height-adjusted total kidney volumes (htTKVs) by MRI and eGFR. Additional analyses were performed, adjusting for participants' age and sex, using multivariable linear regression. RESULTS Greater htTKV correlated with lower eGFR (r=-0.39; P=0.0001). Urinary protein excretion modestly correlated with eGFR (negatively) and htTKV (positively). Urinary cAMP normalized to creatinine positively correlated with eGFR. Among glycolytic enzymes, PKM2 and LDHA excretion positively correlated with htTKV, whereas PKM2 excretion negatively correlated with eGFR. These associations remained significant after adjustments for age and sex. Moreover, in adjusted models, succinate excretion was positively associated with eGFR, and protein excretion was more strongly associated with both eGFR and htTKV in patients <43 years old. CONCLUSIONS Proteinuria correlated with ADPKD severity, and urinary excretion of PKM2 and LDHA correlated with ADPKD severity at baseline in the TAME-PKD study population. These findings are the first to provide evidence in human urine samples that upregulated glycolytic flux is a feature of ADPKD severity. Future analysis may reveal if metformin treatment affects both disease progression and the various urinary metabolic biomarkers in patients throughout the study.
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Affiliation(s)
- Kenneth R. Hallows
- Keck School of Medicine, University of Southern California, Los Angeles, California
| | | | - Hui Li
- Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Biagio Saitta
- Keck School of Medicine, University of Southern California, Los Angeles, California
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16
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Alquraishi M, Puckett DL, Alani DS, Humidat AS, Frankel VD, Donohoe DR, Whelan J, Bettaieb A. Pyruvate kinase M2: A simple molecule with complex functions. Free Radic Biol Med 2019; 143:176-192. [PMID: 31401304 PMCID: PMC6848794 DOI: 10.1016/j.freeradbiomed.2019.08.007] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/29/2019] [Accepted: 08/07/2019] [Indexed: 12/31/2022]
Abstract
Pyruvate kinase M2 is a critical enzyme that regulates cell metabolism and growth under different physiological conditions. In its metabolic role, pyruvate kinase M2 catalyzes the last glycolytic step which converts phosphoenolpyruvate to pyruvate with the generation of ATP. Beyond this metabolic role in glycolysis, PKM2 regulates gene expression in the nucleus, phosphorylates several essential proteins that regulate major cell signaling pathways, and contribute to the redox homeostasis of cancer cells. The expression of PKM2 has been demonstrated to be significantly elevated in several types of cancer, and the overall inflammatory response. The unusual pattern of PKM2 expression inspired scientists to investigate the unrevealed functions of PKM2 and the therapeutic potential of targeting PKM2 in cancer and other disorders. Therefore, the purpose of this review is to discuss the mechanistic and therapeutic potential of targeting PKM2 with the focus on cancer metabolism, redox homeostasis, inflammation, and metabolic disorders. This review highlights and provides insight into the metabolic and non-metabolic functions of PKM2 and its relevant association with health and disease.
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Affiliation(s)
- Mohammed Alquraishi
- Department of Nutrition, University of Tennessee Knoxville, Knoxville, TN, 37996-0840, USA
| | - Dexter L Puckett
- Department of Nutrition, University of Tennessee Knoxville, Knoxville, TN, 37996-0840, USA
| | - Dina S Alani
- Department of Nutrition, University of Tennessee Knoxville, Knoxville, TN, 37996-0840, USA
| | - Amal S Humidat
- Department of Nutrition, University of Tennessee Knoxville, Knoxville, TN, 37996-0840, USA
| | - Victoria D Frankel
- Department of Nutrition, University of Tennessee Knoxville, Knoxville, TN, 37996-0840, USA
| | - Dallas R Donohoe
- Department of Nutrition, University of Tennessee Knoxville, Knoxville, TN, 37996-0840, USA
| | - Jay Whelan
- Department of Nutrition, University of Tennessee Knoxville, Knoxville, TN, 37996-0840, USA
| | - Ahmed Bettaieb
- Department of Nutrition, University of Tennessee Knoxville, Knoxville, TN, 37996-0840, USA; Department of Biochemistry, Cellular and Molecular Biology, University of Tennessee, Knoxville, TN, 37996-0840, USA; Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, 37996-0840, USA.
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17
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Wang J, Cheng D, Zhu L, Wang P, Liu HW, Chen M, Yuan L, Zhang XB. Engineering dithiobenzoic acid lactone-decorated Si-rhodamine as a highly selective near-infrared HOCl fluorescent probe for imaging drug-induced acute nephrotoxicity. Chem Commun (Camb) 2019; 55:10916-10919. [PMID: 31441466 DOI: 10.1039/c9cc04736k] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A highly selective lysosome-targeting NIR fluorescent probe (Lyso-SiR-2S) for HOCl was constructed based on Si-rhodamine B spirodithiolactone. This probe was very effectively employed to sense HOCl produced in various living cells and to visualize fluctuations of endogenous HOCl resulting from GEN-induced acute kidney injury in vivo for the first time.
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Affiliation(s)
- Jinping Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China.
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Protective effects of Croton hookeri on streptozotocin-induced diabetic nephropathy. Food Chem Toxicol 2019; 135:110873. [PMID: 31600566 DOI: 10.1016/j.fct.2019.110873] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 10/02/2019] [Accepted: 10/04/2019] [Indexed: 01/29/2023]
Abstract
In this study, the protective effects of Croton hookeri (CH) extract on renal injury were investigated in streptozotocin (STZ)-induced diabetic rats. Diabetes was induced by a single injection of STZ (45 mg/kg) to Sprague-Dawley rats. After 5 days, CH extract (200 mg/kg) was administered daily by oral gavage for 2 weeks. Administration of CH extracts significantly reduced blood glucose levels in STZ-induced diabetic rats. STZ-induced changes in total cholesterol, LDL, HDL, ALT, AST, BUN, and serum creatinine levels were significantly restored by treatment with CH extract. Abnormal levels of SOD, catalase, glutathione, and oxidized GSH (GSSG) in STZ-treated rats were also significantly recovered by CH extract treatment. CH extract markedly reduced the expression of collagen-1, fibronectin, and α-SMA in the kidney of STZ-induced diabetic rats. In particular, oxidative DNA damages, MDA, TGF-β, IL-1β, and IL-6 levels were significantly reduced in STZ-treated rats following treatment with CH extract, whereas IL-10 showed opposite trend. STZ-induced SIRT1, SIRT3 downregulation and cloudin-1 upregulation in the kidney were dramatically recovered by CH extract treatment. Our data suggest that CH extract protects against diabetic-induced nephropathy by inhibiting oxidative stress and inflammation. Therefore, it has potential as a food supplement to alleviate renal dysfunction caused by diabetes-induced nephropathy.
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Protective Effects of Dendropanax morbifera against Cisplatin-Induced Nephrotoxicity without Altering Chemotherapeutic Efficacy. Antioxidants (Basel) 2019; 8:antiox8080256. [PMID: 31366146 PMCID: PMC6721194 DOI: 10.3390/antiox8080256] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/25/2019] [Accepted: 07/29/2019] [Indexed: 12/22/2022] Open
Abstract
Use of the chemotherapeutic agent cisplatin (CDDP) in cancer patients is limited by the occurrence of acute kidney injury (AKI); however, no protective therapy is available. We aimed to investigate the renoprotective effects of Dendropanax morbifera water extract (DM) on CDDP-induced AKI. Male Sprague-Dawley rats (six animals/group) received: Vehicle (control); CDDP (6 mg/kg, intraperitoneally (i.p.); DM (25 mg/kg, oral); or DM + CDDP injection. CDDP treatment significantly increased blood urea nitrogen (BUN), serum creatinine (sCr), and pro-inflammatory cytokines (IL-6 and TNF-α), and severely damaged the kidney architecture. Urinary excretion of protein-based AKI biomarkers also increased in the CDDP-treated group. In contrast, DM ameliorated CDDP-induced AKI biomarkers. It markedly protected against CDDP-induced oxidative stress by increasing the activity of endogenous antioxidants and reducing the levels of pro-inflammatory cytokines (IL-6 and TNF-α). The protective effect of DM in the proximal tubules was evident upon histopathological examination. In a tumor xenograft model, administration of DM enhanced the chemotherapeutic activity of CDDP and exhibited renoprotective effects against CDDP-induced nephrotoxicity without altering chemotherapeutic efficacy. Our data demonstrate that DM may be an adjuvant therapy with CDDP in solid tumor patients to preserve renal function.
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Barnett LMA, Cummings BS. Nephrotoxicity and Renal Pathophysiology: A Contemporary Perspective. Toxicol Sci 2019; 164:379-390. [PMID: 29939355 DOI: 10.1093/toxsci/kfy159] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The kidney consists of numerous cell types organized into the nephron, which is the basic functional unit of the kidney. Any stimuli that induce loss of these cells can induce kidney damage and renal failure. The cause of renal failure can be intrinsic or extrinsic. Extrinsic causes include cardiovascular disease, obesity, diabetes, sepsis, and lung and liver failure. Intrinsic causes include glomerular nephritis, polycystic kidney disease, renal fibrosis, tubular cell death, and stones. The kidney plays a prominent role in mediating the toxicity of numerous drugs, environmental pollutants and natural substances. Drugs known to be nephrotoxic include several cancer therapeutics, drugs of abuse, antibiotics, and radiocontrast agents. Environmental pollutants known to target the kidney include cadmium, mercury, arsenic, lead, trichloroethylene, bromate, brominated-flame retardants, diglycolic acid, and ethylene glycol. Natural nephrotoxicants include aristolochic acids and mycotoxins such as ochratoxin, fumonisin B1, and citrinin. There are several common characteristics between mechanisms of renal failure induced by nephrotoxicants and extrinsic causes. This common ground exists primarily due to similarities in the molecular mechanisms mediating renal cell death. This review summarizes the current state of the field of nephrotoxicity. It emphasizes integrating our understanding of nephrotoxicity with pathological-induced renal failure. Such approaches are needed to address major questions in the field, which include the diagnosis, prognosis and treatment of both acute and chronic renal failure, and the progression of acute kidney injury to chronic kidney disease.
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Affiliation(s)
| | - Brian S Cummings
- Interdisciplinary Toxicology Program.,Pharmaceutical and Biomedical Sciences, University of Georgia, Athens, Georgia 30602
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21
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Phenotypic selection with an intrabody library reveals an anti-apoptotic function of PKM2 requiring Mitofusin-1. PLoS Biol 2019; 17:e2004413. [PMID: 31181072 PMCID: PMC6586363 DOI: 10.1371/journal.pbio.2004413] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 06/20/2019] [Accepted: 05/21/2019] [Indexed: 12/22/2022] Open
Abstract
Bcl-2 family proteins control a decisive apoptotic event: mitochondrial outer membrane permeabilization (MOMP). To discover MOMP-regulating proteins, we expressed a library of intracellular single-chain variable fragments (scFvs) (“intrabodies”) and selected for those rescuing cells from apoptosis induced by BimS (the short isoform of Bim). One anti-apoptotic intrabody, intrabody 5 (IB5), recognized pyruvate kinase M2 (PKM2), which is expressed in cancer cells. PKM2 deletion ablated this clonogenic rescue; thus, IB5 activated a latent cytoprotective function of PKM2. This resulted not from pyruvate kinase activity per se but rather from the formation of an active tetrameric conformation of PKM2. A stably tetrameric PKM2 mutant, K422R, promoted cell survival even in the absence of IB5, and IB5 further increased survival. Mitochondria isolated from IB5-expressing cells were relatively resistant to MOMP in vitro. In cells, IB5 expression up-regulated Mitofusin-1 (Mfn1) and increased mitochondrial length. Importantly, Mfn1 deficiency abrogated IB5’s cytoprotective effect. PKM2’s anti-apoptotic function could help explain its preferential expression in human cancer. Proteins belonging to the Bcl-2 family regulate a common form of cell death known as apoptosis. Typically, these proteins function in apoptosis by controlling the formation of large pores in the mitochondrial outer membrane (MOM). While many proteins that regulate apoptosis have been identified over the years, some may still be unknown. Here, we used an unbiased approach in which we first expressed in cultured tumor cells a library of intracellular single-chain antibodies termed “intrabodies.” We then selected for intrabodies that allowed cells to evade apoptosis. We identified pyruvate kinase isoform M2 (PKM2), a major glycolytic enzyme that has been linked to cancer development, as the specific target of one such anti-apoptotic intrabody. We showed that the PKM2-specific intrabody promoted cell survival not by neutralizing its target but rather by activating an anti-apoptotic function of PKM2. While this cell survival function of PKM2 was not related to changes in the levels of Bcl-2 family proteins or to effects on the enzymatic activity of PKM2, we found that cell survival requires the increased expression of a MOM protein, Mitofusin-1 (Mfn1), known to regulate mitochondrial fusion. We conclude that this cell survival function of PKM2 could contribute to a role in cancer progression for this protein.
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22
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PKM2 Involved in Neuronal Apoptosis on Hypoxic-ischemic Encephalopathy in Neonatal Rats. Neurochem Res 2019; 44:1602-1612. [PMID: 30911983 DOI: 10.1007/s11064-019-02784-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 03/18/2019] [Accepted: 03/19/2019] [Indexed: 12/14/2022]
Abstract
Pyruvate Kinase isozymes M2 (PKM2) is a glycolytic enzyme involved in glycolysis that decarboxylates phosphoenolpyruvate to pyruvate and generates ATP. PKM2 also plays a significant role in tumor growth, in cell division, angiogenesis, apoptosis and metastasis. In this study, we have investigated the role of PKM2 in cortical neurons which suffered hypoxic-ischemic encephalopathy (HIE) in newborn rats. Immunohistochemistry and Western blot analysis revealed the protein expression of PKM2 peaking at 24 h after HIE. Double immunofluorescence labeling showed that PKM2 was mainly located in the neurons of the ipsilateral cerebral cortex, not in astrocytes or microglia. The increased level of active caspase-3 and the decreased level of phosphorylated AKT (p-AKT) were consistent with the PKM2 expression. TUNEL staining assay showed that PKM2 may participate in neuronal apoptosis in the rat ipsilateral cerebral cortex. Silencing of PKM2 in primary cultures of cortical neurons using a specific siRNA reduced the expression of active caspase-3 and upregulated p-AKT expression. Taken together, the results indicate that PKM2 may be involved in neuronal apoptosis after HIE by a mechanism dependent on the inactivation of p-AKT.
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23
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Shin YJ, Kim KA, Kim ES, Kim JH, Kim HS, Ha M, Bae ON. Identification of aldo-keto reductase (AKR7A1) and glutathione S-transferase pi (GSTP1) as novel renal damage biomarkers following exposure to mercury. Hum Exp Toxicol 2018; 37:1025-1036. [PMID: 29298499 DOI: 10.1177/0960327117751234] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2024]
Abstract
The kidney is one of the main targets for toxicity induced by xenobiotics. Sensitive detection of early impairment is critical to assess chemical-associated renal toxicity. The aim of this study was to identify potential nephrotoxic biomarkers in rat kidney tissues after exposure to mercury (Hg), a representative nephrotoxicant, and to evaluate these new biomarkers employing in vivo and in vitro systems. Mercuric chloride was administered orally to Sprague-Dawley rats for 2 weeks. Proteomic analysis revealed that aldo-keto reductase (AKR7A1) and glutathione S-transferase pi (GSTP1) were significantly elevated in kidney after Hg exposure. While the levels of conventional nephrotoxic clinical markers including blood urea nitrogen and serum creatinine were not elevated, the mRNA and protein levels of AKR7A1 and GSTP1 were increased upon Hg exposure in a dose-dependent manner. The increases in AKR7A1 and GSTP1 were also observed in rat kidneys after an extended exposure for 6 weeks to low-dose Hg. In in vitro rat kidney proximal tubular cells, changes in AKR7A1 and GSTP1 levels correlated well with the extent of cytotoxicity induced by Hg, cadmium, or cisplatin. AKR7A1 and GSTP1 were identified as new candidates for Hg-induced nephrotoxicity, suggesting that these biomarkers have potential for evaluating or predicting nephrotoxicity.
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Affiliation(s)
- Y-J Shin
- 1 College of Pharmacy Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
| | - K-A Kim
- 1 College of Pharmacy Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
| | - E-S Kim
- 1 College of Pharmacy Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
| | - J-H Kim
- 1 College of Pharmacy Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
| | - H-S Kim
- 2 College of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - M Ha
- 3 Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Republic of Korea
| | - O-N Bae
- 1 College of Pharmacy Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
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24
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Chen D, Wei L, Liu ZR, Yang JJ, Gu X, Wei ZZ, Liu LP, Yu SP. Pyruvate Kinase M2 Increases Angiogenesis, Neurogenesis, and Functional Recovery Mediated by Upregulation of STAT3 and Focal Adhesion Kinase Activities After Ischemic Stroke in Adult Mice. Neurotherapeutics 2018; 15:770-784. [PMID: 29869055 PMCID: PMC6095793 DOI: 10.1007/s13311-018-0635-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Ischemic stroke remains a serious threat to human life. Generation of neuronal and vascular cells is an endogenous regenerative mechanism in the adult brain, which may contribute to tissue repair after stroke. However, the regenerative activity is typically insufficient for significant therapeutic effects after brain injuries. Pyruvate kinase isoform M2 (PKM2) is a key regulator for energy metabolism. PKM2 also has nonmetabolic roles involving regulations of gene expression, cell proliferation, and migration in cancer cells as well as noncancerous cells. In a focal ischemic stroke mouse model, recombinant PKM2 (rPKM2) administration (160 ng/kg, intranasal delivery) at 1 h after stroke showed the significant effect of a reduced infarct volume of more the 60%. Delayed treatment of rPKM2, however, lost the acute neuroprotective effect. We then tested a novel hypothesis that delayed treatment of PKM2 might show proregenerative effects for long-term functional recovery and this chronic action could be mediated by its downstream STAT3 signaling. rPKM2 (160 ng/kg) was delivered to the brain using noninvasive intranasal administration 24 h after the stroke and repeated every other day. Western blot analysis revealed that, 7 days after the stroke, the levels of PKM2 and phosphorylated STAT3 and the expression of angiogenic factors VEGF, Ang-1, and Tie-2 in the peri-infarct region were significantly increased in the rPKM2 treatment group compared with those of the stroke vehicle group. To label proliferating cells, 5-bromo-2'-deoxyuridine (BrdU, 50 mg/kg, i.p.) was injected every day starting 3 days after stroke. At 14 days after stroke, immunohistochemistry showed that rPKM2 increased cell homing of doublecortin (DCX)-positive neuroblasts to the ischemic cortex. In neural progenitor cell (NPC) cultures, rPKM2 (0.4-4 nM) increased the expression of integrin β1 and the activation/phosphorylation of focal adhesion kinase (FAK). A mediator role of FAK in PKM2-promoted cell migration was verified in FAK-knockout fibroblast cultures. In the peri-infarct region of the brain, increased numbers of Glut-1/BrdU and NeuN/BrdU double-positive cells indicated enhanced angiogenesis and neurogenesis, respectively, compared to stroke vehicle mice. Using Laser Doppler imaging, we observed better recovery of the local blood flow in the peri-infarct region of rPKM2-treated mice 14 days after stroke. Meanwhile, rPKM2 improved the sensorimotor functional recovery measured by the adhesive removal test. Inhibiting the STAT3 phosphorylation/activation by the STAT3 inhibitor, BP-1-102 (3 mg/kg/day, o.g.), abolished all beneficial effects of rPKM2 in the stroke mice. Taken together, this investigation provides the first evidence demonstrating that early treatment of rPKM2 shows an acute neuroprotective effect against ischemic brain damage, whereas delayed rPKM2 treatment promotes regenerative activities in the poststroke brain leading to better functional recovery. The underlying mechanism involves activation of the STAT3 and FAK signals in the poststroke brain.
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Affiliation(s)
- Dongdong Chen
- Department of Anesthesiology, Emory University School of Medicine, 101 Woodruff Circle, Woodruff Memorial Research Building, Suite 620B, Atlanta, GA, 30322, USA
| | - Ling Wei
- Department of Anesthesiology, Emory University School of Medicine, 101 Woodruff Circle, Woodruff Memorial Research Building, Suite 620B, Atlanta, GA, 30322, USA
| | - Zhi-Ren Liu
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Jenny J Yang
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Xiaohuan Gu
- Department of Anesthesiology, Emory University School of Medicine, 101 Woodruff Circle, Woodruff Memorial Research Building, Suite 620B, Atlanta, GA, 30322, USA
| | - Zheng Z Wei
- Department of Anesthesiology, Emory University School of Medicine, 101 Woodruff Circle, Woodruff Memorial Research Building, Suite 620B, Atlanta, GA, 30322, USA
- Center for Visual and Neurocognitive Rehabilitation, Veteran's Affair Medical Center, Atlanta, GA, 30033, USA
| | - Li-Ping Liu
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, China
| | - Shan Ping Yu
- Department of Anesthesiology, Emory University School of Medicine, 101 Woodruff Circle, Woodruff Memorial Research Building, Suite 620B, Atlanta, GA, 30322, USA.
- Center for Visual and Neurocognitive Rehabilitation, Veteran's Affair Medical Center, Atlanta, GA, 30033, USA.
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25
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Kim JS, Son JY, Kim KS, Lim HJ, Ahn MY, Kwack SJ, Kim YM, Lee KY, Lee J, Lee BM, Kim HS. Hepatic damage exacerbates cisplatin-induced acute kidney injury in Sprague-Dawley rats. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2018; 81:397-407. [PMID: 29557720 DOI: 10.1080/15287394.2018.1451179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The objective of this study was to elucidate the effect of hepatic damage on cisplatin (CDDP)-induced acute kidney injury (AKI). Thioacetamide (TAA, 150 mg/kg), a hepatotoxicant, was intraperitoneally (i.p.) injected to male Sprague-Dawley rats for 3 d prior to CDDP (5 mg/kg, i.p.) injection. All animals were sacrificed 5 d after CDDP treatment, and urine or blood was obtained to measure various parameters. No significant changes in serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) activity were observed after CDDP treatment. However, pretreatment with TAA significantly elevated ALT and AST activity. Serum blood urea nitrogen and creatinine levels significantly increased in CDDP-treated group compared to control. In addition, urinary excretion of novel protein-based biomarkers such as neutrophil gelatinase-associated lipocalin, vascular endothelial growth factor, kidney injury molecule-1, and tissue inhibitor of metalloproteinase-1 rose markedly in the CDDP-treated group. In particular, pretreatment with TAA markedly elevated CDDP-induced urinary excretion of protein-based nephrotoxic biomarkers compared with CDDP alone. Hematoxylin and eosin staining demonstrated that pretreatment with TAA following CDDP injection led to more severe tubular damage and apoptosis in rats compared with CDDP alone. Antioxidant status was significantly reduced in kidneys following pretreatment with TAA prior to CDDP. These findings indicate that liver injury enhanced the vulnerability of kidney to CDDP-induced AKI and this phenomenon may be associated with severe apoptotic damage.
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Affiliation(s)
- Ji Su Kim
- a Division of Toxicology, School of Pharmacy , Sungkyunkwan University , Suwon , Republic of Korea
| | - Ji Yeon Son
- a Division of Toxicology, School of Pharmacy , Sungkyunkwan University , Suwon , Republic of Korea
| | - Kyeong Seok Kim
- a Division of Toxicology, School of Pharmacy , Sungkyunkwan University , Suwon , Republic of Korea
| | - Hyun Jung Lim
- b Department of Food Science and Technology , Kongju National University , Yesan , Choongnam , Republic of Korea
| | - Mee-Young Ahn
- c Major in Pharmaceutical Engineering, Division of Bio-industry, College of Medical and Life Sciences , Silla University , Busan , Republic of Korea
| | - Seung Jun Kwack
- d Department of Biochemistry and Health Science , Changwon National University , Gyeongnam , Republic of Korea
| | - Young-Mi Kim
- e College of Pharmacy and Institute of Pharmaceutical Science and Technology , Hanyang University , Ansan , Republic of Korea
| | - Kwang Youl Lee
- f College of Pharmacy & Research Institute of Drug Development , Chonnam National University , Gwangju , Republic of Korea
| | - Jaewon Lee
- g College of Pharmacy , Pusan National University , Busan , Republic of Korea
| | - Byung Mu Lee
- a Division of Toxicology, School of Pharmacy , Sungkyunkwan University , Suwon , Republic of Korea
| | - Hyung Sik Kim
- a Division of Toxicology, School of Pharmacy , Sungkyunkwan University , Suwon , Republic of Korea
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Curcumin ameliorates cadmium-induced nephrotoxicity in Sprague-Dawley rats. Food Chem Toxicol 2018; 114:34-40. [PMID: 29421648 DOI: 10.1016/j.fct.2018.02.007] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 02/02/2018] [Accepted: 02/04/2018] [Indexed: 02/07/2023]
Abstract
Chronic exposure to cadmium (Cd) causes remarkable damage to the kidneys, a target organ of accumulated Cd after oral administration. The aim of the present study was to investigate the protective effect of curcumin against Cd-induced nephrotoxicity. Sprague-Dawley male rats were divided into the following four treatment groups: control, curcumin (50 mg/kg, oral), CdCl2, (25 mg/kg, oral), and pre-treatment with curcumin (50 mg/kg) 1 h prior to the administration of CdCl2 (25 mg/kg, oral) for 7 days. At 24 h after the final treatment, the animals were killed, and the biomarkers associated with nephrotoxicity were measured. Our data indicated that blood urea nitrogen (BUN) and serum creatinine (sCr) levels were significantly reduced by curcumin pre-treatment in CdCl2-treated animals. Histopathological studies showed hydropic swelling and hypertrophy of the proximal tubular cells in the renal cortex after Cd treatment. Pretreatment with curcumin ameliorated the histological alterations induced by Cd. The urinary excretion of kidney injury molecule-1 (Kim-1), osteopontin (OPN), tissue inhibitor of metalloproteinases 1 (TIMP-1), neutrophil gelatinase-associated lipocalin (NGAL), and netrin-1 significantly reduced by curcumin treatment compared to that in the CdCl2-treated group. The administration of curcumin provided a significant protective effect against Cd-induced nephrotoxicity.
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Pan L, Chen J, Xing W, Xing Z, Zhang J, Peng Y, Zhang Z. Magnetic resonance imaging evaluation of renal ischaemia-reperfusion injury in a rabbit model. Exp Physiol 2017; 102:1000-1006. [PMID: 28470945 DOI: 10.1113/ep086203] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 04/24/2017] [Indexed: 02/06/2023]
Abstract
NEW FINDINGS What is the central question of this study? Renal ischaemia-reperfusion injury occurs in various clinical settings. The clinical diagnosis of ischaemia-reperfusion injury is routinely based on biochemical and haematological tests, which cannot evaluate the function of a single kidney. New magnetic resonance imaging techniques to identify the pathophysiological changes in the renal outer medulla were evaluated. What is the main finding and its importance? This study demonstrated that susceptibility-weighted imaging is a feasible non-invasive tool for imaging and evaluating physipathological changes in the renal outer medulla after ischaemia-reperfusion injury. The aim was to evaluate the feasibility of susceptibility-weighted imaging (SWI) as a tool to identify the changes in the renal outer medulla (OM) in a rabbit model of renal ischaemia-reperfusion injury (IRI). New Zealand rabbits were used (control group n = 10; IRI group n = 40). The rabbits in the IRI group were subjected to left renal artery clamping for 60 min. T2-weighted (T2WI) and SWI examinations were performed at 1, 12, 24 or 48 h after reperfusion (each n = 10). After the examinations, the kidneys were submitted to histological evaluation. The contrast-to-noise ratio (CNR) for the left renal OM was measured using T2WI and SWI. The T2WI and SWI scores of the integrity of the renal OM were evaluated. There were significant differences between T2WI CNRs and SWI CNRs in the control group and the IRI 1, 12 and 48 h time points (all P < 0.05). No significant difference was found between T2WI and SWI CNRs at IRI 24 h (P > 0.05). The mean SWI scores of renal OM in the IRI 1 and 12 h subgroups were both significantly lower than that in the control group (all P < 0.05). The only significant difference in the mean T2WI scores of renal OM was observed between the control and IRI 1 h groups (P < 0.05). Susceptibility-weighted imaging has a significant advantage in evaluation of healthy renal OM over conventional magnetic resonance imaging, and it is a feasible non-invasive tool for imaging and evaluating changes in the renal OM after IRI.
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Affiliation(s)
- Liang Pan
- Department of Radiology, the Third Affiliated Hospital of Suzhou University, Changzhou, People's Republic of China
| | - Jie Chen
- Department of Radiology, the Third Affiliated Hospital of Suzhou University, Changzhou, People's Republic of China.,Department of Medical Imaging, Jinling Hospital, Nanjing University School of Medicine, Nanjing, People's Republic of China
| | - Wei Xing
- Department of Radiology, the Third Affiliated Hospital of Suzhou University, Changzhou, People's Republic of China
| | - Zhaoyu Xing
- Department of Urology, the Third Affiliated Hospital of Suzhou University, Changzhou, People's Republic of China
| | - Jinggang Zhang
- Department of Radiology, the Third Affiliated Hospital of Suzhou University, Changzhou, People's Republic of China
| | - Yan Peng
- Department of Pathology, the Third Affiliated Hospital of Suzhou University, Changzhou, People's Republic of China
| | - Zhuoli Zhang
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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Abstract
Acute kidney injury (AKI) is characterized by an acute decline in renal function and is associated to increased mortality rate, hospitalization time, and total health-related costs. The severity of this ‘fearsome’ clinical complication might depend on, or even be worsened by, the late detection of AKI, when the diagnosis is based on the elevation of serum creatinine (SCr). For these reasons, in recent years a great number of new tools, biomarkers and predictive models have been proposed to clinicians in order to improve diagnosis and prevent the development of AKI. The purpose of this narrative paper is to review the current state of the art in prediction and early detection of AKI and outline future challenges.
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Affiliation(s)
- Simona Pozzoli
- Chair of Nephrology - IRCCS San Raffaele Scientific Institute, Genomics of Renal Diseases and Hypertension Unit, Università Vita Salute San Raffaele, Via Olgettina 60, 20132, Milan, Italy
| | - Marco Simonini
- Chair of Nephrology - IRCCS San Raffaele Scientific Institute, Genomics of Renal Diseases and Hypertension Unit, Università Vita Salute San Raffaele, Via Olgettina 60, 20132, Milan, Italy.
| | - Paolo Manunta
- Chair of Nephrology - IRCCS San Raffaele Scientific Institute, Genomics of Renal Diseases and Hypertension Unit, Università Vita Salute San Raffaele, Via Olgettina 60, 20132, Milan, Italy
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Lee IC, Ko JW, Park SH, Shin NR, Shin IS, Kim YB, Kim JC. Ameliorative effects of pine bark extract on cisplatin-induced acute kidney injury in rats. Ren Fail 2017; 39:363-371. [PMID: 28178874 PMCID: PMC6014499 DOI: 10.1080/0886022x.2017.1282871] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Objective: This study investigated the dose–response effects of pine bark extract (PBE, pycnogenol®) on oxidative stress-mediated apoptotic changes induced by cisplatin (Csp) in rats. Materials and methods: The ameliorating potential of PBE was evaluated after orally administering PBE at doses of 10 or 20 mg/kg for 10 days. Acute kidney injury was induced by a single intraperitoneal injection of Csp at 7 mg/kg on test day 5. Results: Csp treatment caused acute kidney injury manifested by elevated levels of serum blood urea nitrogen (BUN) and creatinine (CRE) with corresponding histopathological changes, including degeneration of tubular epithelial cells, hyaline casts in the tubular lumen, and inflammatory cell infiltration (interstitial nephritis). Csp also induced significant apoptotic changes in renal tubular cells. In addition, Csp treatment induced high levels of oxidative stress, as evidenced by an increased level of malondialdehyde, depletion of the reduced glutathione (GSH) content, and decreased activities of glutathione S-transferase, superoxide dismutase, and catalase in kidney tissues. On the contrary, PBE treatment lowered BUN and CRE levels and effectively attenuated histopathological alterations and apoptotic changes induced by Csp. Additionally, treatment with PBE suppressed lipid peroxidation, prevented depletion of GSH, and enhanced activities of the antioxidant enzymes in kidney tissue. Conclusions: These results indicate that PBE has a cytoprotective effect against oxidative stress-mediated apoptotic changes caused by Csp in the rat kidney, which may be attributed to both increase of antioxidant enzyme activities and inhibition of lipid peroxidation.
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Affiliation(s)
- In-Chul Lee
- a BK21 Plus Team , College of Veterinary Medicine, Chonnam National University , Gwangju , Republic of Korea
| | - Je-Won Ko
- a BK21 Plus Team , College of Veterinary Medicine, Chonnam National University , Gwangju , Republic of Korea
| | - Sung-Hyeuk Park
- a BK21 Plus Team , College of Veterinary Medicine, Chonnam National University , Gwangju , Republic of Korea
| | - Na-Rae Shin
- a BK21 Plus Team , College of Veterinary Medicine, Chonnam National University , Gwangju , Republic of Korea
| | - In-Sik Shin
- a BK21 Plus Team , College of Veterinary Medicine, Chonnam National University , Gwangju , Republic of Korea
| | - Yun-Bae Kim
- b College of Veterinary Medicine, Chungbuk National University , Cheongju , Republic of Korea
| | - Jong-Choon Kim
- a BK21 Plus Team , College of Veterinary Medicine, Chonnam National University , Gwangju , Republic of Korea
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Bae ON, Lee JY. Shedding New Lights with the Breakthrough Ideas to Understand Current Trends in Modern Toxicology. Toxicol Res 2016; 32:1-3. [PMID: 26977252 PMCID: PMC4780238 DOI: 10.5487/tr.2016.32.1.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 01/14/2016] [Indexed: 12/01/2022] Open
Affiliation(s)
- Ok-Nam Bae
- College of Pharmacy, Institute of Pharmaceutical Sciences, Hanyang University, Ansan, Korea
| | - Joo Young Lee
- Integrated Research Institute of Pharmaceutical Sciences, College of Pharmacy, The Catholic University of Korea, Bucheon, Korea
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