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Williquett J, Allamargot C, Sun H. AMPK-SP1-Guided Dynein Expression Represents a New Energy-Responsive Mechanism and Therapeutic Target for Diabetic Nephropathy. KIDNEY360 2024; 5:538-549. [PMID: 38467599 PMCID: PMC11093544 DOI: 10.34067/kid.0000000000000392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 02/05/2024] [Indexed: 03/13/2024]
Abstract
Key Points AMP kinase senses diabetic stresses in podocytes, subsequently upregulates specificity protein 1–mediated dynein expression and promotes podocyte injury. Pharmaceutical restoration of dynein expression by targeting specificity protein 1 represents an innovative therapeutic strategy for diabetic nephropathy. Background Diabetic nephropathy (DN) is a major complication of diabetes. Injury to podocytes, epithelial cells that form the molecular sieve of a kidney, is a preclinical feature of DN. Protein trafficking mediated by dynein, a motor protein complex, is a newly recognized pathophysiology of diabetic podocytopathy and is believed to be derived from the hyperglycemia-induced expression of subunits crucial for the transportation activity of the dynein complex. However, the mechanism underlying this transcriptional signature remains unknown. Methods Through promoter analysis, we identified binding sites for transcription factor specificity protein 1 (SP1) as the most shared motif among hyperglycemia-responsive dynein genes. We demonstrated the essential role of AMP-activated protein kinase (AMPK)–regulated SP1 in the transcription of dynein subunits and dynein-mediated trafficking in diabetic podocytopathy using chromatin immunoprecipitation quantitative PCR and live cell imaging. SP1-dependent dynein-driven pathogenesis of diabetic podocytopathy was demonstrated by pharmaceutical intervention with SP1 in a mouse model of streptozotocin-induced diabetes. Results Hyperglycemic conditions enhance SP1 binding to dynein promoters, promoted dynein expression, and enhanced dynein-mediated mistrafficking in cultured podocytes. These changes can be rescued by chemical inhibition or genetic silencing of SP1. The direct repression of AMPK, an energy sensor, replicates hyperglycemia-induced dynein expression by activating SP1. Mithramycin inhibition of SP1-directed dynein expression in streptozotocin-induced diabetic mice protected them from developing podocytopathy and prevented DN progression. Conclusions Our work implicates AMPK-SP1–regulated dynein expression as an early mechanism that translates energy disturbances in diabetes into podocyte dysfunction. Pharmaceutical restoration of dynein expression by targeting SP1 offers a new therapeutic strategy to prevent DN.
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Affiliation(s)
- Jillian Williquett
- Division of Nephrology, Stead Family Department of Pediatrics, The University of Iowa, Iowa City, Iowa
- Carver College of Medicine, The University of Iowa, Iowa City, Iowa
| | - Chantal Allamargot
- Central Microscopy Research Facility, The University of Iowa, Iowa City, Iowa
| | - Hua Sun
- Division of Nephrology, Stead Family Department of Pediatrics, The University of Iowa, Iowa City, Iowa
- Carver College of Medicine, The University of Iowa, Iowa City, Iowa
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Bhatia D, Srivastava SP. Editorial: Diabetic kidney disease: routes to drug development, pharmacology and underlying molecular mechanisms. Front Pharmacol 2023; 14:1252315. [PMID: 37614315 PMCID: PMC10442945 DOI: 10.3389/fphar.2023.1252315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 08/03/2023] [Indexed: 08/25/2023] Open
Affiliation(s)
- Divya Bhatia
- Division of Nephrology and Hypertension, Joan and Sanford I. Weill Department of Medicine, New York, NY, United States
- NewYork-Presbyterian Hospital, Weill Cornell Medicine, New York, NY, United States
| | - Swayam Prakash Srivastava
- Division of Regenerative Medicine, Department of Medicine, Hartman Institute of Therapeutic Organ Regeneration, Weill Cornell Medicine, New York, NY, United States
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Cao H, Ke B, Lin F, Xue Y, Fang X. Shear Wave Elastography for Assessment of Biopsy-Proven Renal Fibrosis: A Systematic Review and Meta-analysis. ULTRASOUND IN MEDICINE & BIOLOGY 2023; 49:1037-1048. [PMID: 36746743 DOI: 10.1016/j.ultrasmedbio.2023.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 12/05/2022] [Accepted: 01/02/2023] [Indexed: 05/11/2023]
Abstract
The purpose of this meta-analysis was to evaluate the diagnostic performance of shear wave elastography (SWE) for the staging of renal fibrosis in patients with chronic kidney disease (CKD). Classification of CKD into mild, moderate and severe fibrosis was based on renal biopsy pathology (glomerulosclerosis, tubulointerstitial injury and vascular sclerosis). The Cochrane Library, Medline, PubMed, Web of Science, EMBASE and CNKI databases were searched from January 1, 2009, to April 20, 2022. Pooled sensitivity, specificity, diagnostic odds ratio and area under the receiver operating characteristic curve (AUROC) were calculated using random effects models. A total of 1394 patients from 14 studies were included in the final analysis. For mild, moderate and severe renal fibrosis, SWE had a sensitivity of 0.79 (95% confidence interval [CI]: 0.67-0.88), 0.73 (95% CI: 0.65-0.80) and 0.87 (95% CI: 0.71-0.95); a specificity of 0.82 (95% CI: 0.75-0.87), 72% (95% CI: 0.67-0.77) and 0.83 (95% CI: 0.80-0.86); an AUROC of 0.87 (95% CI: 0.84-0.90), 0.78 (95% CI: 0.75-0.82) and 0.86 (95% CI: 0.82-0.88); and a diagnostic odds ratio of 17 (95% CI: 7-43), 7 (95% CI: 4-12) and 34 (95% CI: 13-88), respectively. Meta-regressions revealed that the publication date, system used and number of valid measurements of SWE were the main causes of heterogeneity. SWE is a good technique for diagnosing mild and severe renal fibrosis, as well as a fair technique for diagnosing moderate fibrosis.
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Affiliation(s)
- Huiling Cao
- Department of Nephrology, Second Affiliated Hospital of Nanchang University, Nanchang of Jiangxi, China
| | - Ben Ke
- Department of Nephrology, Second Affiliated Hospital of Nanchang University, Nanchang of Jiangxi, China
| | - Feng Lin
- Department of Neurosurgery, First Affiliated Hospital of Nanchang University, Nanchang of Jiangxi, China
| | - Yuting Xue
- Department of Nephrology, Second Affiliated Hospital of Nanchang University, Nanchang of Jiangxi, China
| | - Xiangdong Fang
- Department of Nephrology, Second Affiliated Hospital of Nanchang University, Nanchang of Jiangxi, China.
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Sun H, Weidner J, Allamargot C, Piper RC, Misurac J, Nester C. Dynein-Mediated Trafficking: A New Mechanism of Diabetic Podocytopathy. KIDNEY360 2023; 4:162-176. [PMID: 36821608 PMCID: PMC10103215 DOI: 10.34067/kid.0006852022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 11/21/2022] [Indexed: 12/12/2022]
Abstract
Key Points The expression of dynein is increased in human and rodent models of diabetic nephropathy (DN), eliciting a new dynein-driven pathogenesis. Uncontrolled dynein impairs the molecular sieve of kidney by remodeling the postendocytic triage and homeostasis of nephrin. The delineation of the dynein-driven pathogenesis promises a broad spectrum of new therapeutic targets for human DN. Background Diabetic nephropathy (DN) is characterized by increased endocytosis and degradation of nephrin, a protein that comprises the molecular sieve of the glomerular filtration barrier. While nephrin internalization has been found activated in diabetes-stressed podocytes, the postinternalization trafficking steps that lead to the eventual depletion of nephrin and the development of DN are unclear. Our work on an inherited podocytopathy uncovered that dysregulated dynein could compromise nephrin trafficking, leading us to test whether and how dynein mediates the pathogenesis of DN. Methods We analyzed the transcription of dynein components in public DN databases, using the Nephroseq platform. We verified altered dynein transcription in diabetic podocytopathy by quantitative PCR. Dynein-mediated trafficking and degradation of nephrin was investigated using an in vitro nephrin trafficking model and was demonstrated in a mouse model with streptozotocin (STZ)-induced DN and in human kidney biopsy sections. Results Our transcription analysis revealed increased expression of dynein in human DN and diabetic mouse kidney, correlated significantly with the severity of hyperglycemia and DN. In diabetic podocytopathy, we observed that dynein-mediated postendocytic sorting of nephrin was upregulated, resulting in accelerated nephrin degradation and disrupted nephrin recycling. In hyperglycemia-stressed podocytes, Dynll1 , one of the most upregulated dynein components, is required for the recruitment of dynein complex that mediates the postendocytic sorting of nephrin. This was corroborated by observing enhanced Dynll1-nephrin colocalization in podocytes of diabetic patients, as well as dynein-mediated trafficking and degradation of nephrin in STZ-induced diabetic mice with hyperglycemia. Knockdown of Dynll1 attenuated lysosomal degradation of nephrin and promoted its recycling, suggesting the essential role of Dynll1 in dynein-mediated mistrafficking. Conclusions Our studies show that hyperglycemia stimulates dynein-mediated trafficking of nephrin to lysosomes by inducing its expression. The decoding of dynein-driven pathogenesis of diabetic podocytopathy offers a spectrum of new dynein-related therapeutic targets for DN.
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Affiliation(s)
- Hua Sun
- Division of Nephrology, Stead Family Department of Pediatrics, The University of Iowa, Iowa City, Iowa
- Carver College of Medicine, The University of Iowa, Iowa City, Iowa
| | - Jillian Weidner
- Division of Nephrology, Stead Family Department of Pediatrics, The University of Iowa, Iowa City, Iowa
- Carver College of Medicine, The University of Iowa, Iowa City, Iowa
| | - Chantal Allamargot
- Central Microscopy Research Facility, The University of Iowa, Iowa City, Iowa
| | - Robert C. Piper
- Department of Molecular Physiology and Biophysics, Carver College of Medicine, The University of Iowa, Iowa City, Iowa
| | - Jason Misurac
- Division of Nephrology, Stead Family Department of Pediatrics, The University of Iowa, Iowa City, Iowa
- Carver College of Medicine, The University of Iowa, Iowa City, Iowa
| | - Carla Nester
- Division of Nephrology, Stead Family Department of Pediatrics, The University of Iowa, Iowa City, Iowa
- Carver College of Medicine, The University of Iowa, Iowa City, Iowa
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The Effect of the Extra Virgin Olive Oil Minor Phenolic Compound 3',4'-Dihydroxyphenylglycol in Experimental Diabetic Kidney Disease. Nutrients 2023; 15:nu15020377. [PMID: 36678248 PMCID: PMC9866567 DOI: 10.3390/nu15020377] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/07/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
The aim of this study was to analyze the possible nephroprotective effect of 3',4'-dihydroxyphenylglycol (DHPG), a polyphenolic compound of extra virgin olive oil (EVOO), on renal lesions in an experimental model of type 1 diabetes. Rats were distributed as follows: healthy normoglycemic rats (NDR), diabetic rats treated with saline (DR), and DR treated with 0.5 mg/kg/day or 1 mg/kg/day of DHPG. DR showed a significantly higher serum and renal oxidative and nitrosative stress profile than NDR, as well as reduced prostacyclin production and renal damage (defined as urinary protein excretion, reduced creatinine clearance, increased glomerular volume, and increased glomerulosclerosis index). DHPG reduced the oxidative and nitrosative stress and increased prostacyclin production (a 59.2% reduction in DR and 34.7-7.8% reduction in DHPG-treated rats), as well as 38-56% reduction in urinary protein excretion and 22-46% reduction in glomerular morphological parameters (after the treatment with 0.5 or 1 mg/kg/day, respectively). Conclusions: DHPG administration to type 1-like diabetic rats exerts a nephroprotective effect probably due to the sum of its antioxidant (Pearson's coefficient 0.68-0.74), antinitrosative (Pearson's coefficient 0.83), and prostacyclin production regulator (Pearson's coefficient 0.75) effects.
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Sanz-Cánovas J, López-Sampalo A, Cobos-Palacios L, Ricci M, Hernández-Negrín H, Mancebo-Sevilla JJ, Álvarez-Recio E, López-Carmona MD, Pérez-Belmonte LM, Gómez-Huelgas R, Bernal-López MR. Management of Type 2 Diabetes Mellitus in Elderly Patients with Frailty and/or Sarcopenia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19148677. [PMID: 35886528 PMCID: PMC9318510 DOI: 10.3390/ijerph19148677] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/13/2022] [Accepted: 07/15/2022] [Indexed: 02/04/2023]
Abstract
The life expectancy of the population is increasing worldwide due to improvements in the prevention, diagnosis, and treatment of diseases. This favors a higher prevalence of type 2 diabetes mellitus (T2DM) in the elderly. Sarcopenia and frailty are also frequently present in aging. These three entities share common mechanisms such as insulin resistance, chronic inflammation, and mitochondrial dysfunction. The coexistence of these situations worsens the prognosis of elderly patients. In this paper, we review the main measures for the prevention and management of sarcopenia and/or frailty in elderly patients with T2DM.
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Affiliation(s)
- Jaime Sanz-Cánovas
- Unidad de Gestión Clínica de Medicina Interna, Hospital Regional Universitario de Málaga, Universidad de Málaga (UMA), 29010 Málaga, Spain; (J.S.-C.); (A.L.-S.); (L.C.-P.); (M.R.); (H.H.-N.); (J.J.M.-S.); (E.Á.-R.); (M.D.L.-C.); (L.M.P.-B.)
- Instituto de Investigación Biomédica de Málaga (IBIMA-Plataforma Bionand), 29590 Málaga, Spain
| | - Almudena López-Sampalo
- Unidad de Gestión Clínica de Medicina Interna, Hospital Regional Universitario de Málaga, Universidad de Málaga (UMA), 29010 Málaga, Spain; (J.S.-C.); (A.L.-S.); (L.C.-P.); (M.R.); (H.H.-N.); (J.J.M.-S.); (E.Á.-R.); (M.D.L.-C.); (L.M.P.-B.)
- Instituto de Investigación Biomédica de Málaga (IBIMA-Plataforma Bionand), 29590 Málaga, Spain
| | - Lidia Cobos-Palacios
- Unidad de Gestión Clínica de Medicina Interna, Hospital Regional Universitario de Málaga, Universidad de Málaga (UMA), 29010 Málaga, Spain; (J.S.-C.); (A.L.-S.); (L.C.-P.); (M.R.); (H.H.-N.); (J.J.M.-S.); (E.Á.-R.); (M.D.L.-C.); (L.M.P.-B.)
- Instituto de Investigación Biomédica de Málaga (IBIMA-Plataforma Bionand), 29590 Málaga, Spain
| | - Michele Ricci
- Unidad de Gestión Clínica de Medicina Interna, Hospital Regional Universitario de Málaga, Universidad de Málaga (UMA), 29010 Málaga, Spain; (J.S.-C.); (A.L.-S.); (L.C.-P.); (M.R.); (H.H.-N.); (J.J.M.-S.); (E.Á.-R.); (M.D.L.-C.); (L.M.P.-B.)
- Instituto de Investigación Biomédica de Málaga (IBIMA-Plataforma Bionand), 29590 Málaga, Spain
| | - Halbert Hernández-Negrín
- Unidad de Gestión Clínica de Medicina Interna, Hospital Regional Universitario de Málaga, Universidad de Málaga (UMA), 29010 Málaga, Spain; (J.S.-C.); (A.L.-S.); (L.C.-P.); (M.R.); (H.H.-N.); (J.J.M.-S.); (E.Á.-R.); (M.D.L.-C.); (L.M.P.-B.)
- Instituto de Investigación Biomédica de Málaga (IBIMA-Plataforma Bionand), 29590 Málaga, Spain
| | - Juan José Mancebo-Sevilla
- Unidad de Gestión Clínica de Medicina Interna, Hospital Regional Universitario de Málaga, Universidad de Málaga (UMA), 29010 Málaga, Spain; (J.S.-C.); (A.L.-S.); (L.C.-P.); (M.R.); (H.H.-N.); (J.J.M.-S.); (E.Á.-R.); (M.D.L.-C.); (L.M.P.-B.)
- Instituto de Investigación Biomédica de Málaga (IBIMA-Plataforma Bionand), 29590 Málaga, Spain
| | - Elena Álvarez-Recio
- Unidad de Gestión Clínica de Medicina Interna, Hospital Regional Universitario de Málaga, Universidad de Málaga (UMA), 29010 Málaga, Spain; (J.S.-C.); (A.L.-S.); (L.C.-P.); (M.R.); (H.H.-N.); (J.J.M.-S.); (E.Á.-R.); (M.D.L.-C.); (L.M.P.-B.)
- Instituto de Investigación Biomédica de Málaga (IBIMA-Plataforma Bionand), 29590 Málaga, Spain
| | - María Dolores López-Carmona
- Unidad de Gestión Clínica de Medicina Interna, Hospital Regional Universitario de Málaga, Universidad de Málaga (UMA), 29010 Málaga, Spain; (J.S.-C.); (A.L.-S.); (L.C.-P.); (M.R.); (H.H.-N.); (J.J.M.-S.); (E.Á.-R.); (M.D.L.-C.); (L.M.P.-B.)
- Instituto de Investigación Biomédica de Málaga (IBIMA-Plataforma Bionand), 29590 Málaga, Spain
| | - Luis Miguel Pérez-Belmonte
- Unidad de Gestión Clínica de Medicina Interna, Hospital Regional Universitario de Málaga, Universidad de Málaga (UMA), 29010 Málaga, Spain; (J.S.-C.); (A.L.-S.); (L.C.-P.); (M.R.); (H.H.-N.); (J.J.M.-S.); (E.Á.-R.); (M.D.L.-C.); (L.M.P.-B.)
- Instituto de Investigación Biomédica de Málaga (IBIMA-Plataforma Bionand), 29590 Málaga, Spain
| | - Ricardo Gómez-Huelgas
- Unidad de Gestión Clínica de Medicina Interna, Hospital Regional Universitario de Málaga, Universidad de Málaga (UMA), 29010 Málaga, Spain; (J.S.-C.); (A.L.-S.); (L.C.-P.); (M.R.); (H.H.-N.); (J.J.M.-S.); (E.Á.-R.); (M.D.L.-C.); (L.M.P.-B.)
- Instituto de Investigación Biomédica de Málaga (IBIMA-Plataforma Bionand), 29590 Málaga, Spain
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Correspondence: (R.G.-H.); (M.R.B.-L.); Tel.: +34-951291169 (R.G.-H.); +34-951290346 (M.R.B.-L.)
| | - Maria Rosa Bernal-López
- Unidad de Gestión Clínica de Medicina Interna, Hospital Regional Universitario de Málaga, Universidad de Málaga (UMA), 29010 Málaga, Spain; (J.S.-C.); (A.L.-S.); (L.C.-P.); (M.R.); (H.H.-N.); (J.J.M.-S.); (E.Á.-R.); (M.D.L.-C.); (L.M.P.-B.)
- Instituto de Investigación Biomédica de Málaga (IBIMA-Plataforma Bionand), 29590 Málaga, Spain
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Correspondence: (R.G.-H.); (M.R.B.-L.); Tel.: +34-951291169 (R.G.-H.); +34-951290346 (M.R.B.-L.)
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Activation of Transcription Factor EB Alleviates Tubular Epithelial Cell Injury via Restoring Lysosomal Homeostasis in Diabetic Nephropathy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:2812493. [PMID: 35082964 PMCID: PMC8786470 DOI: 10.1155/2022/2812493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 11/01/2021] [Accepted: 11/24/2021] [Indexed: 11/17/2022]
Abstract
Disruption of lysosomal homeostasis contributes to the tubulopathy of diabetic nephropathy; however, its underlying mechanisms remain unclear. Herein, we report that decreased activity of transcription factor EB (TFEB) is responsible for the disturbed lysosome biogenesis and clearance in this pathological process. This was confirmed by the findings that insufficient lysosomal replenishment and damaged lysosomal clearance coincided with TFEB inactivation, which was mediated by mTOR hyperactivation in the renal tubular epithelial cells (TECs) of diabetic nephropathy. Furthermore, either TFEB overexpression or pharmacological activation of TFEB enhanced lysosomal clearance via promoting lysosomal biogenesis and protected TECs by reducing apoptosis in vitro. In addition, pharmacological activation of TFEB attenuated renal tubule injury, apoptosis, and inflammation in db/db mice. In conclusion, diabetes-induced mTOR activation represses TFEB function, thereby perturbing lysosomal homeostasis through impairing lysosomal biogenesis and clearance in TECs. Moreover, TFEB activation protects TECs from diabetic injuries via restoring lysosomal homeostasis.
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Li Z, Liang D, Xiao Y, Dai Y, Ai F, Ding J, Shi M, Xiao Y, Guo B. [Oxymatrine improves renal fibrosis and inflammation in diabetic rats by modulating CHK1/2 phosphorylation]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2021; 41:1519-1526. [PMID: 34755667 DOI: 10.12122/j.issn.1673-4254.2021.10.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To explore the role of cell cycle checkpoint kinase 1/2 (CHK1/2) in mediating the inhibitory effect of oxymatrine (OMT) against renal inflammation and fibrosis in diabetic rats. METHODS SD rats were randomly divided into normal control group, diabetes model group (DM) and OMT treatment group (n=6). HE and Masson staining were used to observe histopathological changes of the renal tissue, and the expressions of CHK1, CHK2, p-CHK1 and p-CHK2 were localized by immunohistochemical staining. The contents of interleukin-6 (IL-6) and IL-1β in the renal tissue were detected using ELISA, and the expression levels of CHK1, CHK2, p-CHK1, p-CHK2, type Ⅲ collagen (Col-Ⅲ), type Ⅳ collagen (Col-Ⅳ), and fibronectin (FN) were determined using Western blotting. The changes in the expressions of CHK1, CHK2, p-CHK1, p-CHK2, Col-Ⅲ, Col-Ⅳ and FN proteins were also examined with Western blotting in NRK-52E cells in response to high glucose exposure, OMT treatment and siRNA-mediated CHK1/2 knockdown. RESULTS In diabetic rats, OMT treatment significantly decreased the levels of blood glucose, serum creatinine and 24 h urinary protein (P < 0.05) and obviously improved inflammatory cell infiltration and fibrosis phenotype in the renal tissue (P < 0.05). CHK1 and CHK2 were mainly expressed in the cytoplasm and nuclei of renal tubule cells, and their phosphorylation levels were significantly higher in DM group than in the control group and OMT group. OMT treatment significantly decreased the protein expression levels of p-CHK1, p-CHK2, Col-Ⅲ, Col-Ⅳ and FN in the renal tissue of diabetic rats and in NRK-52E cells exposed to high glucose (P < 0.05). In NRK-52E cells, CHK1/2 knockdown resulted in significant reduction of the protein expressions of p-CHK1/2, Col-Ⅲ, Col-Ⅳ and FN (P < 0.05). CONCLUSION The inhibitory effects of OMT against renal inflammation and fibrosis in diabetic rats are mediated probably by lowered phosphorylation levels of CHK1 and CHK2, which result in reduced release of the downstream inflammatory mediators and decreased secretion and deposition of extracellular matrix.
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Affiliation(s)
- Z Li
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - D Liang
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - Y Xiao
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - Y Dai
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - F Ai
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - J Ding
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - M Shi
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - Y Xiao
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - B Guo
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
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Liu P, Zhang J, Wang Y, Shen Z, Wang C, Chen DQ, Qiu X. The Active Compounds and Therapeutic Target of Tripterygium wilfordii Hook. f. in Attenuating Proteinuria in Diabetic Nephropathy: A Review. Front Med (Lausanne) 2021; 8:747922. [PMID: 34621768 PMCID: PMC8490618 DOI: 10.3389/fmed.2021.747922] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 08/25/2021] [Indexed: 12/25/2022] Open
Abstract
Tripterygium wilfordii Hook. f. (TWHF) is a traditional Chinese herbal medicine and widely used to treat diabetic kidney disease in China. Emerging evidences have revealed its ability to attenuate diabetic nephropathy (DN). Tripterygium wilfordii polyglycosides (TWPs), triptolide (TP), and celastrol are predominantly active compounds isolated from TWHF. The effects and molecular mechanisms of TWHF and its active compounds have been investigated in recent years. Currently, it is becoming clearer that the effects of TWHF and its active compounds involve in anti-inflammation, anti-oxidative stress, anti-fibrosis, regulating autophagy, apoptosis, and protecting podocytes effect. This review presents an overview of the current findings related to the effects and mechanisms of TWHF and its active compounds in therapies of DN, thus providing a systematic understanding of the mechanisms and therapeutic targets by which TWHF and its active compounds affect cells and tissues in vitro and in vivo.
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Affiliation(s)
- Peng Liu
- Shunyi Hospital, Beijing Hospital of Traditional Chinese Medicine, Beijing, China
| | - Jing Zhang
- Institute of Plant Resources, Yunnan University, Kunming, China
| | - Yun Wang
- Shunyi Hospital, Beijing Hospital of Traditional Chinese Medicine, Beijing, China
| | - Zhengri Shen
- Shunyi Hospital, Beijing Hospital of Traditional Chinese Medicine, Beijing, China
| | - Chen Wang
- Shunyi Hospital, Beijing Hospital of Traditional Chinese Medicine, Beijing, China
| | - Dan-Qian Chen
- Department of Emergency, China-Japan Friendship Hospital, Beijing, China
| | - Xinping Qiu
- Shunyi Hospital, Beijing Hospital of Traditional Chinese Medicine, Beijing, China
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Srivastava SP, Kanasaki K, Goodwin JE. Editorial: Combating Diabetes and Diabetic Kidney Disease. Front Pharmacol 2021; 12:716029. [PMID: 34305620 PMCID: PMC8295890 DOI: 10.3389/fphar.2021.716029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 06/23/2021] [Indexed: 12/20/2022] Open
Affiliation(s)
- Swayam Prakash Srivastava
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, United States.,Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT, United States
| | - Keizo Kanasaki
- Internal Medicine 1, Shimane University Faculty of Medicine, Izumo, Japan
| | - Julie E Goodwin
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, United States.,Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT, United States
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Vodošek Hojs N, Bevc S, Ekart R, Piko N, Petreski T, Hojs R. Mineralocorticoid Receptor Antagonists in Diabetic Kidney Disease. Pharmaceuticals (Basel) 2021; 14:561. [PMID: 34208285 PMCID: PMC8230766 DOI: 10.3390/ph14060561] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/06/2021] [Accepted: 06/08/2021] [Indexed: 02/06/2023] Open
Abstract
Diabetes mellitus is a global health issue and main cause of chronic kidney disease. Both diseases are also linked through high cardiovascular morbidity and mortality. Diabetic kidney disease (DKD) is present in up to 40% of diabetic patients; therefore, prevention and treatment of DKD are of utmost importance. Much research has been dedicated to the optimization of DKD treatment. In the last few years, mineralocorticoid receptor antagonists (MRA) have experienced a renaissance in this field with the development of non-steroidal MRA. Steroidal MRA have known cardiorenal benefits, but their use is limited by side effects, especially hyperkalemia. Non-steroidal MRA still block the damaging effects of mineralocorticoid receptor overactivation (extracellular fluid volume expansion, inflammation, fibrosis), but with fewer side effects (hormonal, hyperkalemia) than steroidal MRA. This review article summarizes the current knowledge and newer research conducted on MRA in DKD.
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Affiliation(s)
- Nina Vodošek Hojs
- Department of Nephrology, Clinic for Internal Medicine, University Medical Centre Maribor, Ljubljanska ulica 5, 2000 Maribor, Slovenia; (S.B.); (T.P.); (R.H.)
| | - Sebastjan Bevc
- Department of Nephrology, Clinic for Internal Medicine, University Medical Centre Maribor, Ljubljanska ulica 5, 2000 Maribor, Slovenia; (S.B.); (T.P.); (R.H.)
- Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia;
| | - Robert Ekart
- Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia;
- Department of Dialysis, Clinic for Internal Medicine, University Medical Centre Maribor, Ljubljanska ulica 5, 2000 Maribor, Slovenia;
| | - Nejc Piko
- Department of Dialysis, Clinic for Internal Medicine, University Medical Centre Maribor, Ljubljanska ulica 5, 2000 Maribor, Slovenia;
| | - Tadej Petreski
- Department of Nephrology, Clinic for Internal Medicine, University Medical Centre Maribor, Ljubljanska ulica 5, 2000 Maribor, Slovenia; (S.B.); (T.P.); (R.H.)
- Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia;
| | - Radovan Hojs
- Department of Nephrology, Clinic for Internal Medicine, University Medical Centre Maribor, Ljubljanska ulica 5, 2000 Maribor, Slovenia; (S.B.); (T.P.); (R.H.)
- Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia;
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