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Vergneau-Grosset C, Pujol J, Rubin B, Romano Noriega J, Gara-Boivin C, Chorfi Y, Ferrell S, Lair S. Early decrease of ionized calcium and static symmetric dimethylarginine concentration in a model of renal tubular necrosis in corn snakes (Pantherophis guttatus). Am J Vet Res 2024; 85:ajvr.23.09.0204. [PMID: 38029521 DOI: 10.2460/ajvr.23.09.0204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 11/08/2023] [Indexed: 12/01/2023]
Abstract
OBJECTIVE To determine if plasma concentrations of symmetric dimethylarginine (SDMA), N-acetyl-beta-d-glucosaminidase (NAG), GGT, ALT, AST, lactate, total calcium, and ionized calcium (iCa) and the calcium:phosphorus ratio are clinically relevant biomarkers to detect early stages of tubular lesions in snakes. ANIMALS 6 adult corn snakes (Pantherophis guttatus). METHODS Corn snakes were administered 11 injections of gentamicin at 50 mg/kg, SC, q 24 h in an experimental model of induced tubular necrosis. Plasma biochemistry and blood gas analyses were performed at baseline and after the 3rd and 11th injections. Parameters were compared between time points using a paired Wilcoxon test. In 3 individuals, renal biopsies were collected at baseline before starting injections and at the 3rd and 11th injections, while renal tissue samples were procured after euthanasia in all individuals. RESULTS Renal proximal and distal tubular necrosis and hepatic steatosis were present in all individuals at necropsy. Compared to baseline, decreased blood concentrations of lactate, ionized calcium, and total calcium and a decreased calcium:phosphorus ratio were noted. A significant decrease of lactate and ionized calcium was observed after 3 days. Conversely, no changes in SDMA, NAG, ALT, AST, GGT, and sodium were detected. CLINICAL RELEVANCE Ionized calcium and lactate concentrations were the earliest parameters to decrease compared to baseline values in this experimental model. While SDMA is a sensitive indicator of renal disease in mammals, this biomarker did not increase in a model of induced acute tubular necrosis in corn snakes.
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Affiliation(s)
- Claire Vergneau-Grosset
- Département de Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Julie Pujol
- Département de Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Bastien Rubin
- Département de Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Jacobo Romano Noriega
- Département de Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Carolyn Gara-Boivin
- Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Younes Chorfi
- Département de Biomédecine, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Shannon Ferrell
- Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Stéphane Lair
- Département de Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
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Pham TA, Luu TH, Dam TH, To KA. Bioconversion of Shrimp Waste into Functional Lipid by a New Oleaginous Sakaguchia sp. Mol Biotechnol 2024:10.1007/s12033-023-01014-4. [PMID: 38198050 DOI: 10.1007/s12033-023-01014-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 11/27/2023] [Indexed: 01/11/2024]
Abstract
Chitin, the second most abundant biomolecule after cellulose in nature, is a significant aquaculture by-product, and is estimated at 6-8 million tons annually. Chitin is composed of monomeric N-acetylglucosamine (NAG) which can be seen as an alternative feedstock for biotechnology. Microbial functional lipids have gained attention due to their bioactivity and sustainable production. In this study, a new oleaginous yeast strain named Sakaguchia sp. HKC2 was found to be able to use NAG as the carbon source for growth and accumulate functional lipids such as PUFAs and carotenoids. When cultured on the NAG-containing medium, strain HKC2 exhibited slower growth and slower intracellular lipid accumulation compared to those on a glucose-containing medium. However, the lipids obtained from HKC2 grown on NAG medium were richer in PUFAs. Notably, torularhodin-a powerful bioactive carotenoid-was found in all HKC2 cultures on NAG, while torulene was abundant in glucose medium. These findings highlight a novel avenue for utilizing aquatic by-products and unlocking their potential.
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Affiliation(s)
- Tuan Anh Pham
- School of Biotechnology and Food Technology (SBFT), Hanoi University of Science and Technology (HUST), 1 Dai Co Viet, Hai Ba Trung, Hanoi, Vietnam.
- Laboratory of Applied Microbiology (LAM), Hanoi University of Science and Technology (HUST), 1 Dai Co Viet, Hai Ba Trung, Hanoi, Vietnam.
| | - Thi Huyen Luu
- School of Biotechnology and Food Technology (SBFT), Hanoi University of Science and Technology (HUST), 1 Dai Co Viet, Hai Ba Trung, Hanoi, Vietnam
| | - Thuy Hang Dam
- School of Biotechnology and Food Technology (SBFT), Hanoi University of Science and Technology (HUST), 1 Dai Co Viet, Hai Ba Trung, Hanoi, Vietnam
- Laboratory of Applied Microbiology (LAM), Hanoi University of Science and Technology (HUST), 1 Dai Co Viet, Hai Ba Trung, Hanoi, Vietnam
| | - Kim Anh To
- School of Biotechnology and Food Technology (SBFT), Hanoi University of Science and Technology (HUST), 1 Dai Co Viet, Hai Ba Trung, Hanoi, Vietnam
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Gladney LM, Griswold T, Turnsek M, Im MS, Parsons MMB, Katz LS, Tarr CL, Lee CC. Characterization of a No nagglutinating Toxigenic Vibrio cholerae Isolate. Microbiol Spectr 2023; 11:e0018223. [PMID: 37195209 PMCID: PMC10269536 DOI: 10.1128/spectrum.00182-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 04/24/2023] [Indexed: 05/18/2023] Open
Abstract
Toxigenic Vibrio cholerae serogroup O1 is the etiologic agent of the disease cholera, and strains of this serogroup are responsible for pandemics. A few other serogroups have been found to carry cholera toxin genes-most notably, O139, O75, and O141-and public health surveillance in the United States is focused on these four serogroups. A toxigenic isolate was recovered from a case of vibriosis from Texas in 2008. This isolate did not agglutinate with any of the four different serogroups' antisera (O1, O139, O75, or O141) routinely used in phenotypic testing and did not display a rough phenotype. We investigated several hypotheses that might explain the recovery of this potential nonagglutinating (NAG) strain using whole-genome sequencing analysis and phylogenetic methods. The NAG strain formed a monophyletic cluster with O141 strains in a whole-genome phylogeny. Furthermore, a phylogeny of ctxAB and tcpA sequences revealed that the sequences from the NAG strain also formed a monophyletic cluster with toxigenic U.S. Gulf Coast (USGC) strains (O1, O75, and O141) that were recovered from vibriosis cases associated with exposures to Gulf Coast waters. A comparison of the NAG whole-genome sequence showed that the O-antigen-determining region of the NAG strain was closely related to those of O141 strains, and specific mutations were likely responsible for the inability to agglutinate. This work shows the utility of whole-genome sequence analysis tools for characterization of an atypical clinical isolate of V. cholerae originating from a USGC state. IMPORTANCE Clinical cases of vibriosis are on the rise due to climate events and ocean warming (1, 2), and increased surveillance of toxigenic Vibrio cholerae strains is now more crucial than ever. While traditional phenotyping using antisera against O1 and O139 is useful for monitoring currently circulating strains with pandemic or epidemic potential, reagents are limited for non-O1/non-O139 strains. With the increased use of next-generation sequencing technologies, analysis of less well-characterized strains and O-antigen regions is possible. The framework for advanced molecular analysis of O-antigen-determining regions presented herein will be useful in the absence of reagents for serotyping. Furthermore, molecular analyses based on whole-genome sequence data and using phylogenetic methods will help characterize both historical and novel strains of clinical importance. Closely monitoring emerging mutations and trends will improve our understanding of the epidemic potential of Vibrio cholerae to anticipate and rapidly respond to future public health emergencies.
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Affiliation(s)
- Lori M. Gladney
- Enteric Diseases Laboratory Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Taylor Griswold
- Enteric Diseases Laboratory Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Maryann Turnsek
- Enteric Diseases Laboratory Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Monica S. Im
- Enteric Diseases Laboratory Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Michele M. B. Parsons
- Division of Global Health Protection, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Lee S. Katz
- Enteric Diseases Laboratory Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Cheryl L. Tarr
- Enteric Diseases Laboratory Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
- ASRT, Inc., Smyrna, Georgia, USA
| | - Christine C. Lee
- Enteric Diseases Laboratory Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
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Tabernero G, Pescador M, Ruiz Ferreras E, Morales AI, Prieto M. Evaluation of NAG, NGAL, and KIM-1 as Prognostic Markers of the Initial Evolution of Kidney Transplantation. Diagnostics (Basel) 2023; 13:diagnostics13111843. [PMID: 37296695 DOI: 10.3390/diagnostics13111843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/19/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Kidney transplantation is the best option for end-stage chronic kidney disease. Transplant viability is conditioned by drugs' nephrotoxicity, ischemia-reperfusion damage, or acute rejection. An approach to improve graft survival is the identification of post-transplant renal function prognostic biomarkers. Our objective was to study three early kidney damage biomarkers (N-acetyl-d-glucosaminidase, NAG; neutrophil gelatinase-associated lipocalin, NGAL; and kidney injury molecule-1, KIM-1) in the initial period after transplantation and to identify possible correlations with main complications. We analysed those biomarkers in urine samples from 70 kidney transplant patients. Samples were taken on days 1, 3, 5, and 7 after intervention, as well as on the day that renal function stabilised (based on serum creatinine). During the first week after transplant, renal function improved based on serum creatinine evolution. However, increasing levels of biomarkers at different times during that first week could indicate tubular damage or other renal pathology. A relationship was found between NGAL values in the first week after transplantation and delayed graft function. In addition, higher NAG and NGAL, and lower KIM-1 values predicted a longer renal function stabilisation time. Therefore, urinary NAG, NGAL, and KIM-1 could constitute a predictive tool for kidney transplant complications, contributing to improve graft survival rates.
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Affiliation(s)
- Guadalupe Tabernero
- Toxicology Unit, Universidad de Salamanca, 37007 Salamanca, Spain
- Department of Nephrology, University Hospital, 37007 Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain
| | - Moisés Pescador
- Toxicology Unit, Universidad de Salamanca, 37007 Salamanca, Spain
- Group of Translational Research on Renal and Cardiovascular Diseases (TRECARD), 37007 Salamanca, Spain
- RICORS2040-Instituto de Salud Carlos III, 28029 Madrid, Spain
| | | | - Ana I Morales
- Toxicology Unit, Universidad de Salamanca, 37007 Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain
- Group of Translational Research on Renal and Cardiovascular Diseases (TRECARD), 37007 Salamanca, Spain
- RICORS2040-Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Marta Prieto
- Toxicology Unit, Universidad de Salamanca, 37007 Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain
- Group of Translational Research on Renal and Cardiovascular Diseases (TRECARD), 37007 Salamanca, Spain
- RICORS2040-Instituto de Salud Carlos III, 28029 Madrid, Spain
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Ruiz P, Durán Á, Duque FJ, González MA, Cristóbal JI, Nicolás P, Pérez-Merino EM, Macías-García B, Barrera R. Urinary cystatin C and N-acetyl-beta-D-glucosaminidase ( NAG) as early biomarkers for renal disease in dogs with leishmaniosis. Vet Parasitol 2023; 318:109930. [PMID: 37030024 DOI: 10.1016/j.vetpar.2023.109930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/29/2023] [Accepted: 04/04/2023] [Indexed: 04/10/2023]
Abstract
Canine leishmaniasis (CanL) is a disease caused by Leishmania infantum that can vary from a subclinical infection to a severe disease. Dogs affected with CanL present varying degrees of renal dysfunction. Unfortunately, traditional biomarkers such as urea and creatinine detect renal damage in advanced stages of the disease, so more accurate biomarkers are needed. Hence, we aimed to study how urinary cystatin C (CysC) and N-acetyl-beta-D-glucosaminidase (NAG), behave in dogs with CanL at different stages of the disease. Eighty-six CanL infected dogs were classified according to LeishVet stages: LI (16 dogs), LIIa (12 dogs), LIIb (12 dogs), LIII (16 dogs) and LIV (30 dogs); as a control, 17 healthy dogs were studied. Blood samples were collected for complete haematological and biochemistry analysis including plasma cystatin C. Urine analysis included urine specific gravity (USG), urine protein to creatinine ratio (UPC), CysC and NAG expressed as a ratio with creatinine uCysCc (μg/g) and uNAGc (IU/g). The haematological, biochemical and urinary analysis coincided with the LeishVet guidelines. The statistical study of the uCysCc ratio and the uNAGc, showed significant increase when compared against control starting from group LI (p < 0.05). Interestingly, when the cut-off values were calculated using the ROC curve, uCysCc (258.85 µg/g) and uNAGc (2.25 IU/g) 75 % of the dogs included in LI groups surpassed the threshold. Hence our study indicates that uCysCc and uNAGc, could help to detect early renal damage in CanL affected dogs.
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Affiliation(s)
- Patricia Ruiz
- MINVET Research Group. Departamento de Medicina Animal, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain
| | - Ángela Durán
- Hospital Clínico Veterinario, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain
| | - Francisco Javier Duque
- MINVET Research Group. Departamento de Medicina Animal, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain
| | - Mario Alberto González
- MINVET Research Group. Departamento de Medicina Animal, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain
| | - José Ignacio Cristóbal
- Hospital Clínico Veterinario, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain
| | - Paloma Nicolás
- MINVET Research Group. Departamento de Medicina Animal, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain
| | - Eva María Pérez-Merino
- Departamento de Medicina Animal, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain
| | - Beatriz Macías-García
- MINVET Research Group. Departamento de Medicina Animal, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain.
| | - Rafael Barrera
- MINVET Research Group. Departamento de Medicina Animal, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain
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Wang K, Xiao Y, Wu C, Feng Y, Liu Z, Zhu X, Zang H. Direct conversion of chitin derived N-acetyl-D-glucosamine into 3-acetamido-5-acetylfuran in deep eutectic solvents. Carbohydr Res 2023; 524:108742. [PMID: 36716693 DOI: 10.1016/j.carres.2023.108742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 01/07/2023] [Accepted: 01/09/2023] [Indexed: 01/15/2023]
Abstract
3-Acetylamino-5-acetylfuran (3A5AF) is an important nitrogen-containing fine chemical with broad application prospects and high research value. Herein, we report a novel method for the conversion of N-acetyl-d-glucosamine (NAG) to 3A5AF in the choline chloride-based deep eutectic solvents (DESs). The catalytic activities of various DESs have been smoothly screened, and DES 2 (choline chloride/PEG-200/boronic acid = 1/1/0.5) displayed the best catalytic performance. In the absence of any additional solvent, catalyst and additive, product 3A5AF was obtained in 18.3% yield after reacting at 180 °C for 15 min under atmospheric condition. In addition, DES 2 showed a good reusability. The possible reaction pathway was elucidated on the basis of the results of LC-MS and 13C NMR spectra. This study provided a new perspective for the application of DES in the conversion of chitin biomass.
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Affiliation(s)
- Kai Wang
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry, Tiangong University, Binshuixi Road, Tianjin, 300387, China
| | - Yunfei Xiao
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry, Tiangong University, Binshuixi Road, Tianjin, 300387, China
| | - Changchun Wu
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry, Tiangong University, Binshuixi Road, Tianjin, 300387, China
| | - Yimo Feng
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry, Tiangong University, Binshuixi Road, Tianjin, 300387, China
| | - Zhipeng Liu
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry, Tiangong University, Binshuixi Road, Tianjin, 300387, China
| | - Xi Zhu
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry, Tiangong University, Binshuixi Road, Tianjin, 300387, China
| | - Hongjun Zang
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry, Tiangong University, Binshuixi Road, Tianjin, 300387, China.
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Sakurai M, Suwazono Y, Nogawa K, Watanabe Y, Takami M, Ogra Y, Tanaka YK, Iwase H, Tanaka K, Ishizaki M, Kido T, Nakagawa H. Cadmium body burden and health effects after restoration of cadmium-polluted soils in cadmium-polluted areas in the Jinzu River basin. Environ Health Prev Med 2023; 28:49. [PMID: 37690834 PMCID: PMC10495241 DOI: 10.1265/ehpm.23-00132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 07/21/2023] [Indexed: 09/12/2023] Open
Abstract
BACKGROUND Itai-itai disease is caused by environmental cadmium (Cd) pollution in the Jinzu River basin in Japan. To reduce the Cd contamination of rice, soil restoration of paddy fields was carried out. We evaluated the effect of soil restoration on the health status of residents of the former Cd-polluted area. METHODS Participants were 1,030 men and 944 women who lived in the area of restoration of Cd-polluted rice paddies. First morning urine was collected and urinary Cd, β2-microglobulin (β2MG), and N-acetyl-β-D-glucosaminidase (NAG) levels were measured. Associations among age, years of residence before and after soil restoration, and urinary Cd, β2MG, and NAG levels were evaluated by multiple regression analysis. RESULTS The geometric mean (interquartile range) of urinary Cd (µg/g Cr) was 1.00 (0.58-1.68) in men and 1.67 (1.02-2.91) in women. The geometric means of urinary β2MG (µg/g Cr) and NAG (U/g Cr) were 174.6 (92.6-234.2) and 1.47 (0.72-3.14) in men, and 217.6 (115.3-28.7) and 1.48 (0.73-2.96) in women, respectively. Urinary Cd, β2MG, and NAG were significantly positively correlated (p < 0.01 all). Age and duration of residence in the Cd-polluted area before soil restoration were independently associated with urinary Cd, β2MG, and NAG. Among the 916 participants who had resided in the area before the soil restoration, urinary Cd concentrations were significantly higher, thus by 1.03-fold (95% CI, 1.01-1.04) in men and 1.03-fold (95% CI, 1.01-1.05) in women, when the years of residence before soil restoration by each 5-years increment. By contrast, urinary Cd concentrations were significantly lower, thus 0.97-fold (95% CI, 0.96-0.99) lower in men and 0.97-fold (95% CI, 0.95-0.99) lower in women, by each 5-year increment of residence after soil restoration. A similar association was observed for urinary β2MG concentration, and no significant association was observed for urinary NAG levels in men or women. CONCLUSIONS Cd exposure and associated renal tubular dysfunction in residents of a former Cd-polluted area were influenced by Cd exposure from the environment prior to soil restoration. Soil restoration in Cd-polluted areas reduced the Cd exposure of local residents.
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Affiliation(s)
- Masaru Sakurai
- Department of Social and Environmental Medicine, Kanazawa Medical University, Uchinada 920-0293, Japan
| | - Yasushi Suwazono
- Department of Occupational and Environmental Medicine, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Kazuhiro Nogawa
- Department of Occupational and Environmental Medicine, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Yuuka Watanabe
- Department of Occupational and Environmental Medicine, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Miyuki Takami
- Department of Occupational and Environmental Medicine, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Yasumitsu Ogra
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Yu-Ki Tanaka
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Hirotaro Iwase
- Department of Legal Medicine, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Kayo Tanaka
- Department of Legal Medicine, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Masao Ishizaki
- Department of Social and Environmental Medicine, Kanazawa Medical University, Uchinada 920-0293, Japan
| | - Teruhiko Kido
- School of Health Sciences, Kanazawa University, Kanazawa 920-0942, Japan
| | - Hideaki Nakagawa
- Department of Social and Environmental Medicine, Kanazawa Medical University, Uchinada 920-0293, Japan
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Ráduly Z, Szabó A, Mézes M, Balatoni I, Price RG, Dockrell ME, Pócsi I, Csernoch L. New perspectives in application of kidney biomarkers in mycotoxin induced nephrotoxicity, with a particular focus on domestic pigs. Front Microbiol 2023; 14:1085818. [PMID: 37125184 PMCID: PMC10140568 DOI: 10.3389/fmicb.2023.1085818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 03/24/2023] [Indexed: 05/02/2023] Open
Abstract
The gradual spread of Aspergilli worldwide is adding to the global shortage of food and is affecting its safe consumption. Aspergillus-derived mycotoxins, including aflatoxins and ochratoxin A, and fumonisins (members of the fusariotoxin group) can cause pathological damage to vital organs, including the kidney or liver. Although the kidney functions as the major excretory system in mammals, monitoring and screening for mycotoxin induced nephrotoxicity is only now a developmental area in the field of livestock feed toxicology. Currently the assessment of individual exposure to mycotoxins in man and animals is usually based on the analysis of toxin and/or metabolite contamination in the blood or urine. However, this requires selective and sensitive analytical methods (e.g., HPLC-MS/MS), which are time consuming and expensive. The toxicokinetic of mycotoxin metabolites is becoming better understood. Several kidney biomarkers are used successfully in drug development, however cost-efficient, and reliable kidney biomarkers are urgently needed for monitoring farm animals for early signs of kidney disease. β2-microglobulin (β2-MG) and N-acetyl-β-D-glucosaminidase (NAG) are the dominant biomarkers employed routinely in environmental toxicology research, while kidney injury molecule 1 (KIM-1) and neutrophil gelatinase-associated lipocalin (NGAL) are also emerging as effective markers to identify mycotoxin induced nephropathy. Pigs are exposed to mycotoxins due to their cereal-based diet and are particularly susceptible to Aspergillus mycotoxins. In addition to commonly used diagnostic markers for nephrotoxicity including plasma creatinine, NAG, KIM-1 and NGAL can be used in pigs. In this review, the currently available techniques are summarized, which are used for screening mycotoxin induced nephrotoxicity in farm animals. Possible approaches are considered, which could be used to detect mycotoxin induced nephropathy.
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Affiliation(s)
- Zsolt Ráduly
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- ELKH-DE Cell Physiology Research Group, University of Debrecen, Debrecen, Hungary
- Doctoral School of Molecular Medicine, University of Debrecen, Debrecen, Hungary
- *Correspondence: Zsolt Ráduly,
| | - András Szabó
- Agrobiotechnology and Precision Breeding for Food Security National Laboratory, Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Kaposvár, Hungary
- ELKH-MATE Mycotoxins in the Food Chain Research Group, Kaposvár, Hungary
| | - Miklós Mézes
- ELKH-MATE Mycotoxins in the Food Chain Research Group, Kaposvár, Hungary
- Department of Food Safety, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary
| | | | - Robert G. Price
- Department of Nutrition, Franklin-Wilkins Building, King’s College London, London, United Kingdom
| | - Mark E. Dockrell
- SWT Institute of Renal Research, London, United Kingdom
- Department of Molecular and Clinical Sciences, St. George’s University, London, United Kingdom
| | - István Pócsi
- Department of Molecular Biotechnology and Microbiology, Institute of Biotechnology, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - László Csernoch
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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Galen GV, Olsen E, Siwinska N. Biomarkers of Kidney Disease in Horses: A Review of the Current Literature. Animals (Basel) 2022; 12:ani12192678. [PMID: 36230418 PMCID: PMC9559299 DOI: 10.3390/ani12192678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/20/2022] [Accepted: 09/29/2022] [Indexed: 11/15/2022] Open
Abstract
Creatinine only allows detection of kidney disease when 60 to 75% of the glomerular function is lost and is therefore not an ideal marker of disease. Additional biomarkers could be beneficial to assess kidney function and disease. The objectives are to describe new equine kidney biomarkers. This systematic review assesses the available literature, including the validation process and reference values, following which the authors suggest recommendations for clinical use. SDMA may have some potential as equine kidney biomarker, but there is currently a lack of evidence that SDMA offers any advantage compared to creatinine in detecting Acute Kidney Injury (AKI). Cystatin C and podocin show potential as biomarkers for kidney disease (including detecting AKI earlier than creatinine) and should be studied further. NGAL has potential as a biomarker of kidney disease (including detecting AKI earlier than creatinine), and potential as an inflammatory marker. Literature on MMP-9 does not allow for conclusive statements about its potential as a biomarker for kidney disease. The future may show that NAG has potential. For all biomarkers, at this stage, available scientific information is limited or too scarce to support clinical use, and only SDMA can be measured for clinical purposes. In conclusion, there are multiple new biomarkers with the potential to diagnose kidney problems. However, there are only a few studies available and more data is needed before these biomarkers can be applied and recommended in our daily practice.
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Affiliation(s)
- Gaby van Galen
- Sydney School of Veterinary Science, University of Sydney, Sydney, NSW 2006, Australia
- Goulburn Valley Equine Hospital, Congupna, VIC 3633, Australia
| | - Emil Olsen
- Veterinary Teaching Hospital (Universitetsdjursjukhuset, UDS), Swedish Veterinary Agricultural University (SLU), 750 07 Uppsala, Sweden
| | - Natalia Siwinska
- Department of Internal Medicine, Clinic of Diseases of Horses, Dogs and Cats, Faculty of Veterinary Medicine, University of Environmental and Life Sciences Wroclaw, 50-375 Wroclaw, Poland
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10
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Biernawska J, Kotfis K, Szymańska-Pasternak J, Bogacka A, Bober J. Long-Term Consequences of Increased Activity of Urine Enzymes After Cardiac Surgery - A Prospective Observational Study. Ther Clin Risk Manag 2022; 18:867-877. [PMID: 36051850 PMCID: PMC9427009 DOI: 10.2147/tcrm.s371288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 08/08/2022] [Indexed: 11/23/2022] Open
Abstract
Introduction Cardiac surgery associated AKI (CSA-AKI) complicates recovery and may be associated with a greater risk of developing chronic kidney disease and mortality. The aim of this study was to assess long-term clinical consequences of transient increased activity of urinary enzymes after cardiac surgery (CS). Methods An observational study was conducted in a group of 88 adult patients undergoing planned coronary artery bypass grafting (CABG), but all samples were obtained from 79 patients. The activity of urinary enzymes: N-acetyl-beta-glucosaminidase (NAG), arylsulfatase A (ASA) and beta-glucuronidase was evaluated in sequential urine samples. A comparative analysis of biochemical parameters was performed regarding the occurrence of acute kidney injury (AKI) defined by KIDGO at 24 hours, at day 30 and 5-years after the operation. Results During the first 24 hours after CS AKI was diagnosed in 13 patients. A comparison of the activity of urinary enzymes in pre-defined time-points showed significant differences for ASA and NAG (post OP-sample p < 0.028 and p < 0.022; POD 1 sample p < 0.004 and p < 0.001 respectively). No patient had any biochemical or clinical features of kidney failure at day 30. In the AKI group kidney failure was diagnosed in 36% of patients within 5 years of follow-up as opposed to 5% in the no AKI group. The activities of tubular enzymes in urine reflect a general injury of kidney tubules during and after the operation. However, they are not ideal biomarkers for prediction of the degree of kidney injury and further poor prognosis of CS-AKI.
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Affiliation(s)
- Jowita Biernawska
- Department of Anesthesiology and Intensive Therapy, Pomeranian Medical University, Szczecin, Poland
| | - Katarzyna Kotfis
- Department of Anesthesiology, Intensive Therapy and Acute Intoxications, Pomeranian Medical University, Szczecin, Poland
| | | | - Anna Bogacka
- Department of Commodity Science, Quality Assessment, Process Engineering and Human Nutrition, West Pomeranian University of Technology, Szczecin, Poland
| | - Joanna Bober
- Department of Medical Chemistry, Pomeranian Medical University, Szczecin, Poland
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Allgaier R, Strack C, Wallner S, Hubauer U, Uecer E, Lehn P, Keyser A, Luchner A, Maier L, Jungbauer C. NAG: potential cardiorenal biomarker indicates progression of chronic kidney disease in implantable cardioverter defibrillator patients, contrary to KIM-1. Biomark Med 2022; 16:265-275. [PMID: 35176879 DOI: 10.2217/bmm-2021-0824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: NAG and KIM-1 as markers of tubular damage are suggested as potential biomarkers for the cardiorenal syndrome. Aim of the study was to assess the prognostic capability of NAG and KIM-1 regarding progression of chronic kidney disease (CKD) in patients with implantable cardioverter defibrillator (ICD). Materials & methods: We included 313 patients with an ICD and collected plasma and urine samples. Follow-up was performed after 51 months (interquartile range [IQR]: 25-55). Outcome of interest was continuous CKD progression defined as persistent decline in estimated glomerular filtration rate category accompanied by a ≥25% drop of baseline estimated glomerular filtration rate. Results: Average four (IQR: 2-6) follow-up values of serum creatinine per patient were obtained. During follow-up 29 patients (9%) developed a continuous CKD progression. NAG was shown as independent predictor for continuous CKD progression (p = 0.01), opposite to KIM-1 (p = n.s.). Conclusion: NAG was shown as predictor for a progressive and real deterioration of kidney function in patients with ICD.
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Affiliation(s)
- Raphael Allgaier
- Department of Internal Medicine II, University Medical Center Regensburg, Regensburg, Germany
| | - Christina Strack
- Department of Internal Medicine II, University Medical Center Regensburg, Regensburg, Germany
| | - Stefan Wallner
- Department of Clinical Chemistry & Laboratory Medicine, University Medical Center Regensburg, Regensburg, Germany
| | - Ute Hubauer
- Department of Internal Medicine II, University Medical Center Regensburg, Regensburg, Germany
| | - Ekrem Uecer
- Department of Internal Medicine II, University Medical Center Regensburg, Regensburg, Germany
| | - Petra Lehn
- Department of Clinical Chemistry & Laboratory Medicine, University Medical Center Regensburg, Regensburg, Germany
| | - Andreas Keyser
- Department of Cardiothoracic Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Andreas Luchner
- Department of Cardiology, Hospital Barmherzige Brüder Regensburg, Regensburg, Germany
| | - Lars Maier
- Department of Internal Medicine II, University Medical Center Regensburg, Regensburg, Germany
| | - Carsten Jungbauer
- Department of Internal Medicine II, University Medical Center Regensburg, Regensburg, Germany
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Ráduly Z, Price RG, Dockrell MEC, Csernoch L, Pócsi I. Urinary Biomarkers of Mycotoxin Induced Nephrotoxicity-Current Status and Expected Future Trends. Toxins (Basel) 2021; 13:848. [PMID: 34941686 DOI: 10.3390/toxins13120848] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/19/2021] [Accepted: 11/24/2021] [Indexed: 12/18/2022] Open
Abstract
The intensifying world-wide spread of mycotoxigenic fungal species has increased the possibility of mycotoxin contamination in animal feed and the human food chain. Growing evidence shows the deleterious toxicological effects of mycotoxins from infants to adults, while large population-based screening programs are often missing to identify affected individuals. The kidney functions as the major excretory system, which makes it particularly vulnerable to nephrotoxic injury. However, few studies have attempted to screen for kidney injury biomarkers in large, mycotoxin-exposed populations. As a result, there is an urgent need to screen them with sensitive biomarkers for potential nephrotoxicity. Although a plethora of biomarkers have been tested to estimate the harmful effects of a wide spectrum of toxicants, β2-microglobulin (β2-MG) and N-acetyl-β-D-glucosaminidase (NAG) are currently the dominant biomarkers employed routinely in environmental toxicology research. Nevertheless, kidney injury molecule 1 (KIM-1) and neutrophil gelatinase-associated lipocalin (NGAL) are also emerging as useful and informative markers to reveal mycotoxin induced nephrotoxicity. In this opinion article we consider the nephrotoxic effects of mycotoxins, the biomarkers available to detect and quantify the kidney injuries caused by them, and to recommend biomarkers to screen mycotoxin-exposed populations for renal damage.
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13
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Nirala NR, Asiku J, Dvir H, Shtenberg G. N-acetyl-β-d-glucosaminidase activity assay for monitoring insulin-dependent diabetes using Ag-porous Si SERS platform. Talanta 2021; 239:123087. [PMID: 34839927 DOI: 10.1016/j.talanta.2021.123087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 11/05/2021] [Accepted: 11/21/2021] [Indexed: 12/26/2022]
Abstract
Determination of urinary or serum N-acetyl-β-d-glucosaminidase (NAG) activity as a tissue damage indicator is widely used in diagnosis of various pathologies, including diabetic nephropathy. Early and rapid biomarker detection is an important element of medical diagnosis, facilitating prompt therapeutic decisions and prognosis evaluation. Herein, we present a modified sensing approach for a rapid and reliable NAG activity determination in complex media using surface-enhanced Raman spectroscopy (SERS). Porous silicon (PSi) Fabry-Pérot interferometers were redesigned as sensitive SERS platforms utilizing the vast inherent surface area for silver (Ag) nanoparticles embedment. Interaction of the porous nanostructures with specific NAG-enzymatic products produces an indicative spectral fingerprint proportional in magnitude to its concentration. The sensitivity of Ag-PSi SERS substrates was evaluated in complex matrices presenting sufficient limits of detection compared with other advanced assays and techniques (0.07, 0.47 and 0.50 mU mL-1 for urine, milk and plasma, respectively). The augmented optical performance revealed recovery values of 96-109%, indicating successful and selective NAG recognition in biological fluids. Finally, the potential applicability of the suggested prototype for real-life scenarios was evaluated in vivo, in a model of insulin-dependent diabetes induced in sheep. Overall, the robust data confirm the application of SERS analysis for early diagnosis of pathology and for evaluation of clinical responses to pharmacological treatments.
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Affiliation(s)
- Narsingh R Nirala
- Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Institute, Rishon LeZion, Israel
| | - Jimmy Asiku
- Institute of Biochemistry, Food Science and Nutrition, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel; Institute of Animal Science, Agricultural Research Organization, Volcani Institute, Rishon LeZion, Israel
| | - Hay Dvir
- Institute of Animal Science, Agricultural Research Organization, Volcani Institute, Rishon LeZion, Israel.
| | - Giorgi Shtenberg
- Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Institute, Rishon LeZion, Israel; Agro-Nanotechnology Research Center, Agriculture Research Organization, Volcani Institute, Rishon LeZion, Israel.
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14
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Strack C, Bauer S, Hubauer U, Ücer E, Birner C, Luchner A, Maier L, Jungbauer C. N-acetyl-ß-D-glucosaminidase is predictive of mortality in chronic heart failure: a 10-year follow-up. Biomark Med 2021; 15:1143-1153. [PMID: 34397265 DOI: 10.2217/bmm-2020-0366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: The study focused on biomarkers of kidney injury as predictors of mortality in patients with chronic heart failure (CHF) in a long-term follow-up (median 104 months). Methods/results: KIM-1, NAG and NGAL were assessed from urine, NT-proBNP from blood samples. 149 patients (age 62 ± 12 years) with CHF (mean EF 30% [IQR 24-40%]) were enrolled. 79 (53%) patients died. Cox regression analysis revealed Log2NAG (HR: 1.46, CI: 1.12-1.89), Log2KIM-1 (HR: 1.23, CI: 1.02-1.49) and Log2NT-proBNP (HR: 1.50, CI: 1.32-1.72) as significant predictors of all-cause mortality as opposed to Log2NGAL (HR: 1.04, CI: 0.90-1.20). Log2NAG remained a significant predictor of all-cause mortality in a multivariate Cox regression model but lost its predictive value in combination with Log2NT-proBNP. Conclusion: The 10-year follow-up suggests NAG as a predictive tubular marker in CHF patients.
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Affiliation(s)
- Christina Strack
- Clinic of Internal Medicine II, University Hospital of Regensburg, Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Susanne Bauer
- Clinic of Internal Medicine II, University Hospital of Regensburg, Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Ute Hubauer
- Clinic of Internal Medicine II, University Hospital of Regensburg, Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Ekrem Ücer
- Clinic of Internal Medicine II, University Hospital of Regensburg, Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Christoph Birner
- Clinic of Internal Medicine I, Klinikum St. Marien, Amberg, Mariahilfbergweg 7, 92224, Amberg, Germany
| | - Andreas Luchner
- Clinic of Internal Medicine III, Clinic of Cardiology, Krankenhaus Barmherzige Brüder, Regensburg, Prüfeninger Str. 86, 93049, Regensburg, Germany
| | - Lars Maier
- Clinic of Internal Medicine II, University Hospital of Regensburg, Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Carsten Jungbauer
- Clinic of Internal Medicine II, University Hospital of Regensburg, Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
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Abstract
Acute kidney injury (AKI) is common in advanced cirrhosis. Prerenal azotemia, hepatorenal syndrome, and acute tubular necrosis are the main causes of AKI in patients with cirrhosis. Evaluation of renal function and differentiation between functional and structural kidney injury are important issues in the management of cirrhosis. However, AKI in cirrhosis exists as a complex clinical spectrum rather than concrete clinical entity. Based on current evidence, changes in serum creatinine (Cr) levels remain the most appropriate standard for defining AKI in cirrhosis. However, serum Cr has a limited role in assessing renal function in this population. This review examines previous studies that investigated the ability of recent biomarkers for AKI in cirrhosis from the perspective of earlier and accurate diagnosis, classification of AKI phenotype, and prediction of clinical outcomes. Serum cystatin C and urine neutrophil gelatinase-associated lipocalin have been extensively studied in cirrhosis, and have facilitated improved diagnosis and prognosis prediction in patients with AKI. In addition, urine N-acetyl-β-D-glucosaminidase, interleukin 18, and kidney injury molecule 1 are other promising biomarkers for advanced cirrhosis. However, the clinical significance of these markers remains unclear because there are no cut-off values defining the normal range and differentiating phenotypes of AKI. In addition, AKI has been defined in terms of serum Cr, and renal biopsy-the gold standard-has not been carried out in most studies. Further discovery of innovate biomarkers and incorporation of various markers could improve the diagnosis and prognosis prediction of AKI, and will translate into meaningful improvements in patient outcomes.
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Affiliation(s)
- Han Ah Lee
- Departments of Internal Medicine, Korea University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Yeon Seok Seo
- Departments of Internal Medicine, Korea University College of Medicine, Seoul, Korea
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16
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Vogel MJ, Mustroph J, Staudner ST, Leininger SB, Hubauer U, Wallner S, Meindl C, Hanses F, Zimmermann M, Maier LS, Jungbauer CG, Hupf J. Kidney injury molecule-1: potential biomarker of acute kidney injury and disease severity in patients with COVID-19. J Nephrol 2021; 34:1007-1018. [PMID: 34110585 PMCID: PMC8190170 DOI: 10.1007/s40620-021-01079-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 05/24/2021] [Indexed: 02/07/2023]
Abstract
AIMS The aim of the current study was to evaluate whether tubular markers kidney injury molecule-1 (KIM-1) and N-acetyl-ß-glucosaminidase (NAG) are related to acute kidney injury (AKI) and severe disease in patients with COVID-19. METHODS AND RESULTS In this prospective observational clinical trial we examined a cohort of 80 patients with proof of acute respiratory infection and divided them into a COVID-19 cohort (n = 54) and a control cohort (n = 26). KIM-1 and NAG were measured from urine samples collected in the emergency department. We assessed the development of AKI, admission to the intensive care unit (ICU) and intrahospital death as clinical endpoints. Urinary KIM-1 and NAG were not significantly different between patients with SARS-CoV-2 and those with other respiratory infections (each p = n.s.). Eight patients from the COVID-19 cohort and five of the non-COVID-19-patients suffered from acute kidney injury during their stay. Nine COVID-19 patients and two non-COVID-19 patients were admitted to the ICU. KIM-1 was significantly elevated in COVID-19 patients with, compared to those without AKI (p = 0.005), as opposed to NAG and creatinine (each p = n.s.). Furthermore, KIM-1 was significantly elevated in the patients with COVID-19 that had to be transferred to the ICU (p = 0.015), in contrast to NAG and creatinine (each p = n.s.). CONCLUSION Assessing KIM-1 in patients with COVID-19 might provide additional value in recognizing AKI at an early stage of disease. Further, KIM-1 might indicate higher risk for clinical deterioration as displayed by admission to the ICU.
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Affiliation(s)
- Manuel J Vogel
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany.
| | - Julian Mustroph
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Stephan T Staudner
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Simon B Leininger
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Ute Hubauer
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Stefan Wallner
- Department of Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Christine Meindl
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Frank Hanses
- Emergency Department, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
- Department of Infection Prevention and Infectious Diseases, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053, Regensburg, Germany
| | - Markus Zimmermann
- Emergency Department, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Lars S Maier
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Carsten G Jungbauer
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Julian Hupf
- Emergency Department, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
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Xu P, Mo Z, Wu L, Chen W, He S, Chen Y, Xu D, Xiang J, Chen Z, Lou X, Wang Z, Wang X. Elevated cadmium and 8-hydroxy-2'-deoxyguanosine (8-OHdG) levels in residents living near electroplating industries. Environ Sci Pollut Res Int 2021; 28:34427-34435. [PMID: 33651290 DOI: 10.1007/s11356-021-13209-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
This study aims to evaluate the body burdens of cadmium (Cd) associated with potential health impairment in residents living near electroplating industries. A total of 269 residents from exposure area and 106 from control area were recruited. We measured the blood and urinary Cd levels using an inductively coupled plasma mass spectrometer (ICP-MS); performed physical examinations; determined the urinary levels of β2-microglobulin (β2-MG), Nacetyl-β-D-glucosaminidase (NAG), and 8-hydroxy-2'-deoxyguanosine (8-OHdG); and evaluated the associations between Cd and these biomarkers. Blood and urinary Cd levels in exposure group were statistically higher than in control group (1.712 vs. 1.159 μg/L; 1.980 vs. 1.740 μg/L, respectively, p < 0.05). Urinary β2-MG and 8-OHdG levels in exposure group were also statistically higher (0.448 vs. 0.090 mg/L; 12.759 vs. 12.115 μg/L, respectively, p < 0.05), but urinary NAG levels showed no significant difference between the two groups (13.614 vs. 8.246 IU/L, p > 0.05). The proportion of abnormal nasal symptoms occurring in exposed subjects (88.8%) was much higher than in control subjects (78.2%, p < 0.05). Urinary Cd levels were positively correlated with blood Cd levels, urinary 8-OHdG, and NAG levels (r = 0.307, r = 0.185, r = 0.150, p < 0.05), but not correlated with urinary β2-MG levels (p > 0.05). In conclusion, our study revealed that residents living in close proximity to electroplating industries had elevated body burdens of Cd levels, as well as slight renal dysfunction and DNA oxidation damage.
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Affiliation(s)
- Peiwei Xu
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Bin Sheng Road, Binjiang District, Hangzhou, 310051, China
| | - Zhe Mo
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Bin Sheng Road, Binjiang District, Hangzhou, 310051, China
| | - Lizhi Wu
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Bin Sheng Road, Binjiang District, Hangzhou, 310051, China
| | - Weizhong Chen
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Bin Sheng Road, Binjiang District, Hangzhou, 310051, China
| | - Shengliang He
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Bin Sheng Road, Binjiang District, Hangzhou, 310051, China
| | - Yuan Chen
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Bin Sheng Road, Binjiang District, Hangzhou, 310051, China
| | - Dandan Xu
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Bin Sheng Road, Binjiang District, Hangzhou, 310051, China
| | - Jie Xiang
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Bin Sheng Road, Binjiang District, Hangzhou, 310051, China
| | - Zhijian Chen
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Bin Sheng Road, Binjiang District, Hangzhou, 310051, China
| | - Xiaoming Lou
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Bin Sheng Road, Binjiang District, Hangzhou, 310051, China
| | - Zhen Wang
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Bin Sheng Road, Binjiang District, Hangzhou, 310051, China.
| | - Xiaofeng Wang
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Bin Sheng Road, Binjiang District, Hangzhou, 310051, China.
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Youssry I, Makar S, Abdelkhalek K, Hisham D, Sawires H. Comparing different markers of tubular dysfunction in transfusion-dependent thalassemia patients. Int Urol Nephrol 2021; 54:421-428. [PMID: 34165679 DOI: 10.1007/s11255-021-02914-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 06/06/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Renal tubular dysfunction was reported in transfusion-dependent thalassemia (TDT) patients and ranges from mild to severe. The objectives of our study were identification of the best marker of early renal tubular dysfunction in TDT patients among the three most commonly used urinary biomarkers, named neutrophil gelatinase-associated lipocalin (NGAL), retinol-binding protein (RBP) and N-acetyl-D-glucosaminidase (NAG) and correlation of these biomarkers with different patient variables. METHODOLOGY Sixty-one TDT patients and another 62 healthy children were enrolled in a cross-sectional study. Morning urine samples were taken for measurement of calcium, phosphorus, creatinine, microalbumin and markers of tubular dysfunction (NGAL, NAG and RBP). Urine NGAL/creatinine (UrNGAL/Cr), urine NAG/creatinine (UrNAG/Cr) and urine RBP/creatinine (UrRBP/Cr) ratios were used for accuracy. Patients were classified into 2 groups: group A, with tubular dysfunction and group b, without tubular dysfunction. RESULTS Group A showed statistically significant higher UrNGAL/Cr (p < 0.001), UrRBP/Cr (p < 0.001) and UrNAG/Cr (p <0.001) than group B. In group A, microalbuminuria was detected only in 7 patients (28%) while it was detected in 12 patients (33.3%) in group B. By using ROC curve analysis, the diagnostic cutoff values for UrNGAL/Cr, UrRBP/Cr and UrNAG/Cr were 3713.38, 1614.85 and 56.56 ng/g, respectively. We found a statistically significant superiority of UrNGAL/Cr over UrRBP/Cr (p < 0.001) and UrRBP/Cr over UrNAG/Cr (p < 0.001). CONCLUSION Evaluation of UrNGAL/Cr, UrRBP/Cr and UrNAG/Cr could early discriminate tubular dysfunction TDT patients from those with normal tubular function. UrNGAL/Cr is more accurate in early detection of tubular dysfunction when compared with the other two biomarkers.
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Affiliation(s)
- Ilham Youssry
- Pediatric Department, Cairo University, Cairo, Egypt
| | - Samuel Makar
- Pediatric Department, Cairo University, Cairo, Egypt
| | | | - Dina Hisham
- Chemical Pathology Department, Cairo University, Cairo, Egypt
| | - Happy Sawires
- Pediatric Department, Cairo University, Cairo, Egypt.
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19
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Będzichowska A, Jobs K, Kloc M, Bujnowska A, Kalicki B. The Assessment of the Usefulness of Selected Markers in the Diagnosis of Chronic Kidney Disease in Children. Biomark Insights 2021; 16:11772719211011173. [PMID: 33958853 PMCID: PMC8060753 DOI: 10.1177/11772719211011173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 03/11/2021] [Indexed: 11/15/2022] Open
Abstract
INTRODUCTION The kidney deterioration, which starts in childhood often leads to end-stage renal failure in the future. Therefore, searching for an early, sensitive, and specific biomarkers became a paramount for chronic kidney disease diagnosis. The aim of this study was the assessment of markers: KIM-1, FGF-23, NAG, NGAL, and uromodulin for diagnosis of preclinical phase of the disease in children. PATIENTS AND METHODS 59 children (15 boys, 44 girls from 6 months to 17 years old) with kidney disorders, which had clinical indications for renoscintigraphy, were included in the study. All patients were divided depending on the result of renoscintigraphy (renal scarring vs normal kidney picture) and depending on the level of estimated glomerular filtration rate (glomerular hyperfiltration vs normal filtration rate). The concentration of uromoduline, KIM-1, FGF-23, NAG, and NGAL in serum and of NGAL and uromoduline in urine were measured in all studied groups. RESULTS The children with glomerular hyperfiltration had a statistically significantly higher serum values of FGF-23 and NGAL than the children with normal filtration rate (P < .05). There were no statistically significant differences in serum concentrations of tested markers in children with renal scars in comparison to children with normal renal image. There was no statistically significant difference in the concentration of tested markers in urine. CONCLUSIONS The study confirmed the possible usefulness of FGF-23 and NGAL in detecting the preclinical-stage of renal disease associated with glomerular hyperfiltration in children. The study do not allow to indicate markers, which could be useful in the early diagnosis of kidney damage visible in the scintigraphic examination.
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Affiliation(s)
- Agata Będzichowska
- Department of Pediatrics, Pediatric
Nephrology and Allergology, Military Institute of Medicine, Warsaw, Poland
| | - Katarzyna Jobs
- Department of Pediatrics, Pediatric
Nephrology and Allergology, Military Institute of Medicine, Warsaw, Poland
| | - Małgorzata Kloc
- The Houston Methodist Research
Institute, Houston, TX, USA
- The University of Texas, MD Anderson
Cancer Center, Houston, TX, USA
| | - Anna Bujnowska
- Department of Pediatrics, Pediatric
Nephrology and Allergology, Military Institute of Medicine, Warsaw, Poland
| | - Bolesław Kalicki
- Department of Pediatrics, Pediatric
Nephrology and Allergology, Military Institute of Medicine, Warsaw, Poland
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20
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Lorenzo-Gómez MF, Flores-Fraile MC, Márquez-Sánchez M, Flores-Fraile J, González-Casado I, Padilla-Fernández B, Valverde-Martínez S, Hernández Sánchez T, Muller-Arteaga C, García-Cenador MB. Increased urinary markers of kidney damage in the institutionalized frail elderly due to recurrent urinary tract infections. Ther Adv Urol 2020; 12:1756287220974133. [PMID: 33335564 PMCID: PMC7724260 DOI: 10.1177/1756287220974133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 10/25/2020] [Indexed: 12/03/2022] Open
Abstract
Objective: To characterize the impact on kidney injury of recurrent urinary tract
infections (RUTI) in the frail elderly. Methods: Prospective observational study in 200 frail elderly subjects for 1 year.
Groups: GA (n = 100): subjects without RUTI, GB
(n = 100): subjects with RUTI. Variables: age,
concomitant diseases, glomerular filtration rate (GFR), urine neutrophil
gelatinase-associated lipocalin (NGAL) at the beginning (NGAL-1) and end
(NGAL-2) of the study, urine N-acetyl glucosaminidase (NAG) at the beginning
(NAG-1) and the end (NAG-2) of the study, urine transforming growth
factor-beta 1 (TGFβ-1). Descriptive statistics, Mann–Whitney test,
Chi-squared test, Fisher’s exact test, and multivariate analysis were
used. Results: Mean age was 84.33 (65–99) years old, with no difference between GA and GB.
Mean NGAL-1 was 1.29 ng/ml (0.04–8). There was lower in GA than in GB. Mean
NGAL-2 was 1.41 ng/ml (0.02–9.22). NGAL-2 was lower in GA than in GB. Mean
NAG-1 was 0.38 UU.II/ml (0.01–2.63. NAG-1 in GA was lower than in GB. Mean
NAG-2 was 0.44 UU.II/ml (0–3.41). NAG-2 was lower in GA compared with GB.
Mean TGFβ-1 was 23.43 pg/ml (0.02–103.76). TGFβ-1 was lower in GA than GB.
There were no differences in the presence of secondary diagnoses between GA
and GB. NAG-2 and NGAL-1 were the most determining factors of renal
function; in GA it was NGAL-2, followed by NAG-1; in GB it was NGAL-1,
followed by NAG-2. Conclusion: Frail elderly with RUTI have higher urinary levels of renal injury markers,
specifically NGAL, NAG, and TGFβ-1, chronically in periods between urinary
tract infection (UTI). Urinary markers of renal injury, specifically NGAL,
NAG, and TGFβ-1, identify early deterioration of renal function, compared
with serum creatinine, or albuminuria, in frail elderly with recurrent
urinary infections.
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Affiliation(s)
- María-Fernanda Lorenzo-Gómez
- Department of Surgery, University of Salamanca, Salamanca, Spain Multidisciplinary Renal Research Group) of the Institute for Biomedical Research of Salamanca (IBSAL), Spain Urology Service of the University Hospital of Salamanca, Salamanca, Spain
| | | | - Magaly Márquez-Sánchez
- Multidisciplinary Renal Research Group) of the Institute for Biomedical Research of Salamanca (IBSAL), Spain
| | - Javier Flores-Fraile
- Department of Surgery, University of Salamanca, Alfonso X el sabio Campus Miguel de Unamuno, Salamanca, 37008, Spain
| | - Ignacio González-Casado
- Multidisciplinary Renal Research Group) of the Institute for Biomedical Research of Salamanca (IBSAL), Spain
| | | | - Sebastián Valverde-Martínez
- Department of Surgery, University of Salamanca, Salamanca, Spain Multidisciplinary Renal Research Group) of the Institute for Biomedical Research of Salamanca (IBSAL), Spain Department of Urology of University Hospital of Avila, Spain
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21
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Jeyendran RS, Levrant S, Puscheck E. A novel laboratory procedure to validate American Urological Association guideline on vasectomy success and to diagnose obstructive azoospermia. Andrologia 2020; 52:e13766. [PMID: 32833301 DOI: 10.1111/and.13766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/09/2020] [Accepted: 06/28/2020] [Indexed: 11/28/2022] Open
Abstract
The objective was to develop a laboratory procedure to validate American Urological Association (AUA) Guideline on vasectomy success when nonmotile spermatozoa are found in the post-vasectomy ejaculate. The neutral α-glucosidase (NAG) an epididymal protein assay modified to determine the activity at 30 and 90 min of incubation from 24 pre- and 47 post-vasectomy ejaculates. The difference between the two points in the relative activity was calculated and if the difference was nonsignificant will confirm vasectomy success. The mean differences in the relative NAG activity were significantly different in pre- and post-vasectomy ejaculates, respectively. The mean differences in the relative NAG activity were similar in post-vasectomy ejaculates with and without nonmotile spermatozoa. No difference in relative NAG activity in post-vasectomy ejaculates between two time points of incubation may be a reliable method to confirm occlusion of the vas deferens. It also validates the recommendation by AUA Guideline on vasectomy success in the presence of few nonmotile spermatozoa.
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Affiliation(s)
| | - Seth Levrant
- Partners in Reproductive Health, Tinley Park, IL, USA
| | - Elizabeth Puscheck
- Wayne State University School of Medicine, Detroit, MI, USA.,InVia Fertility, Hoffman Estates, IL, USA
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22
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Fuertes-Martín R, Correig X, Vallvé JC, Amigó N. Title: Human Serum/Plasma Glycoprotein Analysis by 1H-NMR, an Emerging Method of Inflammatory Assessment. J Clin Med 2020; 9:E354. [PMID: 32012794 PMCID: PMC7073769 DOI: 10.3390/jcm9020354] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/13/2020] [Accepted: 01/17/2020] [Indexed: 12/17/2022] Open
Abstract
Several studies suggest that variations in the concentration of plasma glycoproteins can influence cellular changes in a large number of diseases. In recent years, proton nuclear magnetic resonance (1H-NMR) has played a major role as an analytical tool for serum and plasma samples. In recent years, there is an increasing interest in the characterization of glycoproteins through 1H-NMR in order to search for reliable and robust biomarkers of disease. The objective of this review was to examine the existing studies in the literature related to the study of glycoproteins from an analytical and clinical point of view. There are currently several techniques to characterize circulating glycoproteins in serum or plasma, but in this review, we focus on 1H-NMR due to its great robustness and recent interest in its translation to the clinical setting. In fact, there is already a marker in H-NMR representing the acetyl groups of the glycoproteins, GlycA, which has been increasingly studied in clinical studies. A broad search of the literature was performed showing a general consensus that GlycA is a robust marker of systemic inflammation. The results also suggested that GlycA better captures systemic inflammation even more than C-reactive protein (CRP), a widely used classical inflammatory marker. The applications reviewed here demonstrated that GlycA was potentially a key biomarker in a wide range of diseases such as cancer, metabolic diseases, cardiovascular risk, and chronic inflammatory diseases among others. The profiling of glycoproteins through 1H-NMR launches an encouraging new paradigm for its future incorporation in clinical diagnosis.
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Affiliation(s)
- Rocío Fuertes-Martín
- Biosfer Teslab SL, 43201 Reus, Spain; (R.F.-M.); (N.A.)
- Metabolomic s platform, IISPV, CIBERDEM, Rovira i Virgili University, 43007 Tarragona, Spain
| | - Xavier Correig
- Metabolomic s platform, IISPV, CIBERDEM, Rovira i Virgili University, 43007 Tarragona, Spain
| | - Joan-Carles Vallvé
- Metabolomic s platform, IISPV, CIBERDEM, Rovira i Virgili University, 43007 Tarragona, Spain
- Lipids and Arteriosclerosis Research Unit, Sant Joan de Reus University Hospital, 43201 Reus, Spain
| | - Núria Amigó
- Biosfer Teslab SL, 43201 Reus, Spain; (R.F.-M.); (N.A.)
- Metabolomic s platform, IISPV, CIBERDEM, Rovira i Virgili University, 43007 Tarragona, Spain
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23
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Patiyal S, Agrawal P, Kumar V, Dhall A, Kumar R, Mishra G, Raghava GP. NAGbinder: An approach for identifying N-acetylglucosamine interacting residues of a protein from its primary sequence. Protein Sci 2020; 29:201-210. [PMID: 31654438 PMCID: PMC6933864 DOI: 10.1002/pro.3761] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/24/2019] [Accepted: 10/24/2019] [Indexed: 12/14/2022]
Abstract
N-acetylglucosamine (NAG) belongs to the eight essential saccharides that are required to maintain the optimal health and precise functioning of systems ranging from bacteria to human. In the present study, we have developed a method, NAGbinder, which predicts the NAG-interacting residues in a protein from its primary sequence information. We extracted 231 NAG-interacting nonredundant protein chains from Protein Data Bank, where no two sequences share more than 40% sequence identity. All prediction models were trained, validated, and evaluated on these 231 protein chains. At first, prediction models were developed on balanced data consisting of 1,335 NAG-interacting and noninteracting residues, using various window size. The model developed by implementing Random Forest using binary profiles as the main principle for identifying NAG-interacting residue with window size 9, performed best among other models. It achieved highest Matthews Correlation Coefficient (MCC) of 0.31 and 0.25, and Area Under Receiver Operating Curve (AUROC) of 0.73 and 0.70 on training and validation data set, respectively. We also developed prediction models on realistic data set (1,335 NAG-interacting and 47,198 noninteracting residues) using the same principle, where the model achieved MCC of 0.26 and 0.27, and AUROC of 0.70 and 0.71, on training and validation data set, respectively. The success of our method can be appraised by the fact that, if a sequence of 1,000 amino acids is analyzed with our approach, 10 residues will be predicted as NAG-interacting, out of which five are correct. Best models were incorporated in the standalone version and in the webserver available at https://webs.iiitd.edu.in/raghava/nagbinder/.
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Affiliation(s)
- Sumeet Patiyal
- Department of Computational BiologyIndraprastha Institute of Information TechnologyDelhiIndia
| | - Piyush Agrawal
- Department of Computational BiologyIndraprastha Institute of Information TechnologyDelhiIndia
- Bioinformatics CentreCSIR‐Institute of Microbial TechnologyChandigarhIndia
| | - Vinod Kumar
- Department of Computational BiologyIndraprastha Institute of Information TechnologyDelhiIndia
- Bioinformatics CentreCSIR‐Institute of Microbial TechnologyChandigarhIndia
| | - Anjali Dhall
- Department of Computational BiologyIndraprastha Institute of Information TechnologyDelhiIndia
| | - Rajesh Kumar
- Department of Computational BiologyIndraprastha Institute of Information TechnologyDelhiIndia
- Bioinformatics CentreCSIR‐Institute of Microbial TechnologyChandigarhIndia
| | - Gaurav Mishra
- Department of Electrical EngineeringShiv Nadar University, Greater NoidaGautam Buddha NagarIndia
| | - Gajendra P.S. Raghava
- Department of Computational BiologyIndraprastha Institute of Information TechnologyDelhiIndia
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24
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Schlossbauer MH, Hubauer U, Stadler S, Hupf J, Sag S, Birner C, Zimmermann M, Orso E, Fischer M, Luchner A, Maier LS, Jungbauer CG. The role of the tubular biomarkers NAG, kidney injury molecule-1 and neutrophil gelatinase-associated lipocalin in patients with chest pain before contrast media exposition. Biomark Med 2019; 13:379-392. [PMID: 30920848 DOI: 10.2217/bmm-2018-0275] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Aim: We evaluated the role of the tubular biomarkers N-acetyl-ß-D-glucosaminidase (NAG), kidney injury molecule-1 (KIM-1) and neutrophil gelatinase-associated lipocalin (NGAL) in patients with chest pain. Methods: Serum and urine samples were collected of 223 patients and 47 healthy controls. None of them was exposed to contrast media. Results: NAG showed among others significant correlation with N-terminal pro brain natriuretic peptide (NTproBNP), troponin I and creatinine. KIM-1 and NGAL showed weaker correlations. NAG was significantly elevated in all subgroups of acute coronary syndrome (ACS) compared with chest wall syndrome and controls. NAG was an independent predictor for the diagnosis of myocardial infarction. Conclusion: NAG may demonstrate the presence of acute tubular injury due to cardiac impairment already in the emergency department. NAG should be evaluated as marker of acute cardiorenal syndrome in patients with chest pain.
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Affiliation(s)
- Michael H Schlossbauer
- Abteilung für Kardiologie, Klinik und Poliklinik für Innere Medizin II, Universitätsklinikum Regensburg, Regensburg, Germany
| | - Ute Hubauer
- Abteilung für Kardiologie, Klinik und Poliklinik für Innere Medizin II, Universitätsklinikum Regensburg, Regensburg, Germany
| | - Stefan Stadler
- Abteilung für Kardiologie, Klinik und Poliklinik für Innere Medizin II, Universitätsklinikum Regensburg, Regensburg, Germany
| | - Julian Hupf
- Abteilung für Kardiologie, Klinik und Poliklinik für Innere Medizin II, Universitätsklinikum Regensburg, Regensburg, Germany
| | - Sabine Sag
- Abteilung für Kardiologie, Klinik und Poliklinik für Innere Medizin II, Universitätsklinikum Regensburg, Regensburg, Germany
| | - Christoph Birner
- Abteilung für Kardiologie, Klinik und Poliklinik für Innere Medizin II, Universitätsklinikum Regensburg, Regensburg, Germany
| | - Markus Zimmermann
- Interdisziplinäre Notaufnahme Universitätsklinikum Regensburg, Regensburg, Germany
| | - Evelyn Orso
- Klinische Chemie und Laboratoriumsmedizin, Universitätsklinikum Regensburg, Regensburg, Germany
| | - Marcus Fischer
- Abteilung für Kardiologie, Klinik und Poliklinik für Innere Medizin II, Universitätsklinikum Regensburg, Regensburg, Germany
| | - Andreas Luchner
- Abteilung für Kardiologie, Klinik und Poliklinik für Innere Medizin II, Universitätsklinikum Regensburg, Regensburg, Germany
| | - Lars S Maier
- Abteilung für Kardiologie, Klinik und Poliklinik für Innere Medizin II, Universitätsklinikum Regensburg, Regensburg, Germany
| | - Carsten G Jungbauer
- Abteilung für Kardiologie, Klinik und Poliklinik für Innere Medizin II, Universitätsklinikum Regensburg, Regensburg, Germany
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25
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Washino S, Hosohata K, Oshima M, Okochi T, Konishi T, Nakamura Y, Saito K, Miyagawa T. A Novel Biomarker for Acute Kidney Injury, Vanin-1, for Obstructive Nephropathy: A Prospective Cohort Pilot Study. Int J Mol Sci 2019; 20:E899. [PMID: 30791405 DOI: 10.3390/ijms20040899] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 02/03/2019] [Accepted: 02/14/2019] [Indexed: 12/31/2022] Open
Abstract
Background: Vanin-1 is a novel acute kidney injury (AKI) biomarker that has not been clinically investigated as a biomarker for obstructive nephropathy. This study investigated the diagnostic value of vanin-1 as a biomarker for adult obstructive nephropathy by comparing it to existing AKI biomarkers. Methods: A total of 49 patients, 21 controls, and 28 hydronephrosis (HN) cases were assessed. AKI biomarkers in bladder (BL) urine and renal pelvic (RP) urine in the HN group were compared to each BL marker in the control group. In a subgroup of cases receiving interventions for obstructive nephropathy, the BL values of each biomarker were assessed after the intervention. Results: RP vanin-1 levels were significantly higher while BL vanin-1 levels were marginally higher in the HN group than in the control group. The area under the receiver operating characteristics curve values for RP and BL vanin-1 were 0.9778 and 0.6386, respectively. In multivariate analyses, BL vanin-1 and N-acetyl-β-D-glucosaminidase (NAG), but not kidney injury molecule-1 (KIM-1) or neutrophil gelatinase-associated lipocalin (NGAL), were independent factors for predicting the presence of HN. In cases receiving interventions, vanin-1 decreased significantly from 1 week after the intervention in cases of moderate to severe obstructive nephropathy compared to RP values at baseline. Conclusion: Urinary vanin-1 is a useful biomarker to detect and monitor the clinical course of obstructive nephropathy.
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26
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Marchewka Z, Szymańska B, Dembowski J, Długosz A, Piwowar A. Low molecular weight proteins and enzymes in the urine of patients with bladder cancer - a pilot study. Cent European J Urol 2018; 71:280-286. [PMID: 30386648 PMCID: PMC6202615 DOI: 10.5173/ceju.2018.1661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 04/03/2018] [Accepted: 09/02/2018] [Indexed: 11/22/2022] Open
Abstract
Introduction A steady increase in cases of bladder cancer (BC) has been observed. Detection of unfavorable changes, especially in the early stages of disease, is crucial to medical procedure. There is still a need to search for new, non-invasive biomarkers of BC. The aim of this study was to estimate the levels of selected low molecular weight proteins (LMWP) and enzymes in the urine of patients at different BC stages and grades. Material and methods Urine samples from 46 patients with BC and 16 healthy controls were examined. We measured levels of LMWP such as: retinol-binding protein (RBP), β2 -microglobulin (β2M), enzymes: N-acetyl-β-D-glucosaminidase (NAG), isoform (NAG-B) and also neutrophil gelatinase-associated lipocalin (NGAL). Results The levels of all examined parameters differed between patients and healthy subjects. Levels of NAG (p = 0.031), NAG-B (p = 0.023) and NGAL (p = 0.008), and total protein (p = 0.007) concentrations, were significantly higher in the BC patients than in the control group. Among the examined parameters, positive significant correlations were observed only between urinary NGAL concentration and tumor stages and grades. The highest percentages of changes in NGAL concentration were observed in tumor in situ (TIS) and G3grade patients. Conclusions Our study showed that urinary NGAL concentrations, as well as NAG and NAG-B activity, could be helpful noninvasive parameters for the diagnosis of BC. The most promising seems to be NGAL determination, but further study is needed on a larger group of participants in order to confirm this observation.
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Affiliation(s)
- Zofia Marchewka
- Department of Toxicology, Laboratory of Environmental Nephrotoxicity Markers, Faculty of Pharmacy, Wrocław Medical University, Wrocław, Poland
| | - Beata Szymańska
- Department of Toxicology, Laboratory of Environmental Nephrotoxicity Markers, Faculty of Pharmacy, Wrocław Medical University, Wrocław, Poland
| | - Janusz Dembowski
- Clinic of Urology and Urological Oncology, Faculty of Postgraduate Medical Training, Wrocław Medical University, Wrocław, Poland
| | - Anna Długosz
- Department of Toxicology, Faculty of Pharmacy, Wrocław Medical University, Wrocław, Poland
| | - Agnieszka Piwowar
- Department of Toxicology, Faculty of Pharmacy, Wrocław Medical University, Wrocław, Poland
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27
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ElBadre HM, El-Mahdy RI, Mohamed NA, Zakhary MM, Maximous DW. Tissue Indices of Telomere Length and p53 in Patients with Different Gastrointestinal Tumors: Correlation with Clinicopathological Status. Appl Biochem Biotechnol 2018; 186:764-778. [PMID: 29730783 DOI: 10.1007/s12010-018-2759-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 04/05/2018] [Indexed: 12/11/2022]
Abstract
Telomere length dysfunction is involved in the generation of genomic rearrangements that drive progression to malignancy. A set of serological markers for telomere dysfunction, namely chitinase and N-acetylglucosaminidase (NAG), DNA damage, and tissue alteration of p53 have been identified. The probability that genomic damage, accumulation of reactive oxygen species, and shorter telomeres may be related to the onset and advancement of gastrointestinal (GI) tumors. A total of 40 patients with GI tumors and 20 healthy controls with matched age and sex were included. Estimation of serum chitinase, NAG, lipid peroxide (LPER), glutathione peroxidase (GPx), superoxide dismutase (SOD), catalase by colorimetric methods, and p53 by ELISA were assessed. Related clinicopathological features were determined. Serological chitinase, NO, LPER, and p53 were significantly increased, SOD was significantly decreased (p ˂ 0.001 for each) in GI tumor patients compared with controls and correlated significantly with age. There was a significant correlation between telomere dysfunction indices, p53, oxidative stress indices, and malignant stages of GI cancer patients. Moreover, a significant difference in the mean serum levels of indices between control, malignant, and benign subjects was found. Accordingly, these biomarkers play an important role in the pathogenesis of GI cancer and their estimation may predict the GI tumor behavior.
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Affiliation(s)
- Hala M ElBadre
- Department of Medical Biochemistry, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Reham I El-Mahdy
- Department of Medical Biochemistry, Faculty of Medicine, Assiut University, Assiut, Egypt.
| | - Nahed A Mohamed
- Department of Medical Biochemistry, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Madeha M Zakhary
- Department of Medical Biochemistry, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Doaa W Maximous
- Department of Surgical Oncology, South Egypt Cancer Institute, Assiut University, Assiut, Egypt
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28
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El-Ashmawy NE, Khedr EG, El-Bahrawy HA, El-Berashy SA. Effect of human umbilical cord blood-derived mononuclear cells on diabetic nephropathy in rats. Biomed Pharmacother 2017; 97:1040-1045. [PMID: 29136782 DOI: 10.1016/j.biopha.2017.10.151] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/25/2017] [Accepted: 10/25/2017] [Indexed: 02/02/2023] Open
Abstract
Diabetic nephropathy (DN) is damage to the kidney which can lead to chronic renal failure, eventually requiring dialysis. Diabetes mellitus is the most common cause of adult kidney failure worldwide in the developed world. The current work was designed to elucidate the effect of mononuclear cells (MNCs) injection on reverse DN in rats exposed to streptozotocin (STZ) injection compared to metformin as a known hypoglycemic drug, 40 Male rats were divided equally into 4 groups; normal control group, diabetic control group, MNCs group were diabetic rats treated with MNCs (30×106 MNCs/rat once iv dose) in the tail vein of the rat, and metformin group were diabetic rats treated with metformin (100mg/kg orally daily dose) for four weeks. The results indicated an improvement effect of MNCs and metformin on STZ-induced DN in rats, which was evidenced by significant decrease in urinary albumin/creatinine ratio, N-acetyl-β-d-glucosaminidase (NAG), urinary kidney injury molecule-1 (KIM-1), serum urea, serum creatinine and fasting blood glucose and significant increase in C- peptide level, compared to diabetic control group. Additionally MNCs treated group exhibited pronounced effects in all previous parameters compared to metformin treated group. It is proved that MNCs treatment was superior to metformin in controlling hyperglycemia, and improving renal function in diabetic rats.
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Affiliation(s)
- Nahla E El-Ashmawy
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Eman G Khedr
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Hoda A El-Bahrawy
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Shimaa A El-Berashy
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt.
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29
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Afzal M, Shafeeq S, Manzoor I, Henriques-Normark B, Kuipers OP. N-acetylglucosamine-Mediated Expression of nagA and nagB in Streptococcus pneumoniae. Front Cell Infect Microbiol 2016; 6:158. [PMID: 27900287 PMCID: PMC5110562 DOI: 10.3389/fcimb.2016.00158] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Accepted: 11/02/2016] [Indexed: 11/13/2022] Open
Abstract
In this study, we have explored the transcriptomic response of Streptococcus pneumoniae D39 to N-acetylglucosamine (NAG). Transcriptome comparison of S. pneumoniae D39 wild-type grown in chemically defined medium (CDM) in the presence of 0.5% NAG to that grown in the presence of 0.5% glucose revealed elevated expression of many genes/operons, including nagA, nagB, manLMN, and nanP. We have further confirmed the NAG-dependent expression of nagA, nagB, manLMN, and nanP by β-galactosidase assays. nagA, nagB and glmS are putatively regulated by a transcriptional regulator NagR. We predicted the operator site of NagR (dre site) in PnagA, PnagB, and PglmS, which was further confirmed by mutating the predicted dre site in the respective promoters (nagA, nagB, and glmS). Growth comparison of ΔnagA, ΔnagB, and ΔglmS with the D39 wild-type demonstrates that nagA and nagB are essential for S. pneumoniae D39 to grow in the presence of NAG as a sole carbon source. Furthermore, deletion of ccpA shows that CcpA has no effect on the expression of nagA, nagB, and glmS in the presence of NAG in S. pneumoniae.
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Affiliation(s)
- Muhammad Afzal
- Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of GroningenGroningen, Netherlands; Department of Bioinformatics and Biotechnology, Government College UniversityFaisalabad, Pakistan
| | - Sulman Shafeeq
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet Stockholm, Sweden
| | - Irfan Manzoor
- Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of GroningenGroningen, Netherlands; Department of Bioinformatics and Biotechnology, Government College UniversityFaisalabad, Pakistan
| | | | - Oscar P Kuipers
- Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen Groningen, Netherlands
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Jung MS, Kim JY, Lee HS, Lee CG, Song HS. Air pollution and urinary n-acetyl-B-glucosaminidase levels in residents living near a cement plant. Ann Occup Environ Med 2016; 28:52. [PMID: 27708787 PMCID: PMC5041281 DOI: 10.1186/s40557-016-0138-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 09/20/2016] [Indexed: 01/07/2023] Open
Abstract
Background To identify adverse renal effects due to air pollution derived from a cement plant in Korea. Urinary n-acetyl-B-glucosaminidase (U-NAG) levels in residents living near a cement plant were compared to those in a group who lived farther away from the plant. Methods From June to August 2013 and from August to November 2014, laboratory tests for U-NAG and heavy metal were conducted on 547 study participants. Based on the level of air pollution exposure, subjects were divided into the “less exposed group,” (LEG) which consisted of 66 persons who lived more than 5 km away from the cement plant, the “more exposed group from the rural area” (MEG-R), which consisted of 272 persons, and the “more exposed group from downtown area” (MEG-D), which consisted of 209 persons who lived within a 1 km radius of the cement plant. U-NAG levels >5.67 U/L were defined as “higher U-NAG” levels. We compared the prevalence of higher U-NAG levels and estimated the adjusted odds ratio (OR) by air pollution exposure using a chi-square test and multiple logistic regression analysis. Further, we estimated the interaction between air pollution exposure and heavy metal exposure in renal toxicity. Results The OR of higher U-NAG levels by MEG-D and MEG-R compared to LEG was 2.13 (95 % CI 0.86–4.96) and 4.79 (95 CI 1.65–10.01), respectively. Urinary cadmium (U-Cd), urinary mercury (U-Hg), age, occupation, hypertension, and diabetes had a significant association with higher U-NAG levels. However, blood lead (B-Pb), sex, and smoking were not associated with higher U-NAG. Especially, concurrent exposure to heavy metals (U-Hg or/and U-Cd) and air pollution had an additive adverse effect. In the group with both 4th quartile heavy metal exposure (U-Cd or/and U-Hg) and air pollution exposure, the OR in MEG-R and MEG-D was 6.49 (95 % 1.42–29.65) and 8.12 (95 % CI 1.74–37.92), respectively, after adjustment for age, occupation, hypertension, diabetes. Conclusions U-NAG levels seem to be affected by air pollution exposure as well as age, hypertension, diabetes, and even low levels of cadmium and low levels of mercury. Moreover, concurrent exposure to heavy metals and air pollution can have additive cytotoxic renal effects.
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Affiliation(s)
- Min Soo Jung
- Department of Occupational & Environmental Medicine, School of Medicine, Chosun University, 309 Pilmun-daero Dong-gu, Gwangju, 61452 South Korea
| | - Jae Yoon Kim
- Department of Occupational & Environmental Medicine, School of Medicine, Chosun University, 309 Pilmun-daero Dong-gu, Gwangju, 61452 South Korea
| | - Hyun Seung Lee
- Korea Medical Institute, 5-6, Sangmujungang-ro 78beon-gil, Seo-gu, Gwangju, 61949 South Korea
| | - Chul Gab Lee
- Department of Occupational & Environmental Medicine, School of Medicine, Chosun University, 309 Pilmun-daero Dong-gu, Gwangju, 61452 South Korea
| | - Han Soo Song
- Department of Occupational & Environmental Medicine, School of Medicine, Chosun University, 309 Pilmun-daero Dong-gu, Gwangju, 61452 South Korea
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Lim H, Lim JA, Choi JH, Kwon HJ, Ha M, Kim H, Park JD. Associations of Low Environmental Exposure to Multiple Metals with Renal Tubular Impairment in Korean Adults. Toxicol Res 2016; 32:57-64. [PMID: 26977259 PMCID: PMC4780232 DOI: 10.5487/tr.2016.32.1.057] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 12/15/2015] [Accepted: 01/03/2016] [Indexed: 11/20/2022] Open
Abstract
Recently several studies reported that the renal toxicity of lead (Pb) and cadmium (Cd) may exist in even a low level exposure. In terms of the deterioration of tubular function, it affects the loss of divalent metals and leads to other complications, so renal tubular effect of heavy metals should be well managed. Considering the exposure to heavy metals in reality, it is hard to find the case that human is exposed to only one heavy metal. We designed a cross-sectional study using Korean Research Project on the Integrated Exposure Assessment (KRIEFS) data to investigate the renal effects of multiple metal exposure in general population. We used blood Pb and urinary Cd as exposure measures, and urinary N-acetyl-β-D-glucosaminidase (NAG) and β2-microglobulin (β2-MG) as renal tubular impairment outcome. We conducted linear regression to identify the association between each heavy metal and urinary NAG and β2-MG. And then, we conducted linear regression including the interaction term. Of 1953 adults in KRIEFS (2010~2011), the geometric mean of blood Pb and urinary Cd concentration was 2.21 μg/dL (geometric SD = 1.49 μg/dL) and 1.08 μg/g cr (geometric SD = 1.98 μg/g cr), respectively. In urinary Cd, the strength of the association was also high after adjusting (urinary NAG: β = 0.44, p < 0.001; urinary β2-MG: β = 0.13, p = 0.002). Finally, we identified the positive interactions for the two renal biomarkers. The interaction effect of the two heavy metals of β2-MG was greater than that of NAG. It is very important in public health perspective if the low level exposure to multiple heavy metals has an interaction effect on kidney. More epidemiological studies for the interaction and toxicological studies on the mechanism are needed.
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Affiliation(s)
- Hyungryul Lim
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Korea
| | - Ji-Ae Lim
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Korea
| | - Jong Hyuk Choi
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Korea
| | - Ho-Jang Kwon
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Korea
| | - Mina Ha
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Korea
| | - Heon Kim
- Department of Preventive Medicine, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Jung-Duck Park
- Department of Preventive Medicine, Chung-ang University College of Medicine, Seoul, Korea
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Sheira G, Noreldin N, Tamer A, Saad M. Urinary biomarker N-acetyl-β-D-glucosaminidase can predict severity of renal damage in diabetic nephropathy. J Diabetes Metab Disord 2015; 14:4. [PMID: 25717442 PMCID: PMC4340101 DOI: 10.1186/s40200-015-0133-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Accepted: 02/05/2015] [Indexed: 11/29/2022]
Abstract
Background Diabetic nephropathy is a clinical diagnosis where proteinuria is present in a patient with diabetes. Early intervention can significantly improve the prognosis. However, imprecision of the currently available biomarkers have impaired effective therapies in a timely manner. Urinary N-acetyl-β-D-glucosaminidase (NAG) is excreted in abnormally high amounts in many renal diseases. The aim of this study was to evaluate urinary NAG as an early biomarker in detection of diabetic nephropathy and whether it parallels the severity of kidney damage in different stages of diabetic nephropathy. Methods Fifty patients with type 2 DM were classified into 3 groups (normoalbuminurea, microalbuminurea and macroalbuminurea) and 10 healthy subjects served as a control group. Urinary NAG, albumin and creatinine were measured. Blood urea, serum creatinine, serum albumin, total proteins, serum cholesterol, alanine aminotransferase (ALT), aspartate aminotransferase (AST), fasting and postprandial blood glucose, HbA1c and creatinine clearance were measured for all subjects. Results All diabetic patients had a significantly higher level of urinary NAG compared to control. NAG value increased in parallel with the severity of renal involvement. Conclusion Urinary NAG expresses the degree of renal impairment in diabetic nephropathy.
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Affiliation(s)
- Gehan Sheira
- Department of Internal Medicine, College of Medicine, University of Tanta, Tanta, Egypt
| | - Nashwa Noreldin
- Department of Internal Medicine, College of Medicine, University of Tanta, Tanta, Egypt
| | - Almokadem Tamer
- Department of Internal Medicine, College of Medicine, University of Tanta, Tanta, Egypt
| | - Mohamed Saad
- Clinical Pathology, College of Medicine, University of Tanta, Tanta, Egypt
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Şen V, Ece A, Uluca Ü, Söker M, Güneş A, Kaplan İ, Tan İ, Yel S, Mete N, Sahin C. Urinary early kidney injury molecules in children with beta-thalassemia major. Ren Fail 2015; 37:607-13. [PMID: 25656833 DOI: 10.3109/0886022x.2015.1007871] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND The aim of this study was to investigate novel urinary biomarkers including N-acetyl-β-D-glucosaminidase (NAG), neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecule-1 (KIM-1), and liver-type fatty acid binding protein (L-FABP) in children with β-thalassemia major (β-TM). MATERIALS AND METHODS Totally, 52 patients (29 boys, 23 girls) with β-TM and 29 healthy controls (3-17 years) were included. Various demographic characteristics and blood transfusions/year, disease duration, and chelation therapy were recorded. Serum urea, creatinine, electrolytes, and ferritin and urinary creatinine, protein, calcium, phosphorus, sodium, potassium, and uric acid in first morning urine samples were measured and estimated glomerular filtration rate (eGFR) was calculated. Routine serum and urinary biochemical variables, urinary NAG to Creatinine (U(NAG/Cr)), U(NGAL/Cr), U(KIM-1/Cr), and U(L-FABP/Cr) ratios were determined. RESULTS Patients had similar mean serum urea, creatinine and eGFR levels compared with controls (p > 0.05 for all). The mean urinary protein to creatinine (U(Protein/Cr)) ratio was significantly higher in patients compared to the healthy subjects (0.13 ± 0.09 mg/mg and 0.07 ± 0.04 mg/mg, respectively; p < 0.001). Significantly increased U(NAG/Cr) (0.48 ± 0.58 vs. 0.23 ± 0.16, p = 0.026) and U(NGAL/Cr) (22.1 ± 18.5 vs. 11.5 ± 6.17, p = 0.01) ratios were found in β-TM patients compared with healthy controls. However, no differences were found in serum and urinary electrolytes or U(KIM-1/Cr) and U(L-FABP/Cr) ratios between patients and controls (p > 0.05). Significant correlations were found between urinary biomarkers and urinary electrolytes (p < 0.05). CONCLUSIONS Our results suggest that urinary NAG and NGAL may be considered to be reliable markers to monitor renal injury in β-TM patients.
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Affiliation(s)
- Velat Şen
- Dicle University Medical School Department of Pediatrics , Diyarbakir , Turkey
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Gluhovschi G, Modilca M, Velciov S, Gluhovschi C, Petrica L, Vernic C, Kaycsa A. Familial versus environmental factors in Balkan endemic nephropathy in Mehedinti county, Romania, by means of albuminuria and tubular biomarkers: preliminary study. Ren Fail 2014; 37:219-24. [PMID: 25394278 DOI: 10.3109/0886022x.2014.982476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION AND AIMS Balkan endemic nephropathy (BEN), a regional tubulointerstitial kidney disease encountered in South-Eastern Europe, with still undefined etiology and inexorable evolution towards end stage renal disease, raises the question of the relative contribution of family and environmental factors in its etiology. In order to evaluate the intervention of these factors, markers of tubular injury have been assessed, this lesion being considered an early renal involvement in BEN. METHODS The paper studies relatives of BEN patients currently included in dialysis programmes (for involvement of the family factor) and their neighbors (for involvement of environmental factors) and analyzes them with regard to tubular injury by means of tubular biomarkers (N-acetyl-beta-d-glucosaminidase-NAG and alpha-1-microglobulin), and albuminuria. At the same time, glomerular filtration rate (GFR) (CKD-EPI) was measured. It is considered that, in order to acquire the disease, one should have lived for 20 years in the BEN area. The relatives have been classified according to this criterion. RESULTS More evident tubular injury was found in the neighbors of BEN patients living for more than 20 years in the endemic area, which argues in favor of environmental factors. Higher levels of urinary alpha-1-microglobulin and albumin in relatives of BEN patients who had been living for more than 20 years in the area than in relatives with a residence under 20 years, plead for the same hypothesis. GFR was lower in persons who had been living for more than 20 years in the BEN area (neighbors and relatives). CONCLUSIONS Environmental factors could be more important in BEN than family factors.
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Affiliation(s)
- Gheorghe Gluhovschi
- Division of Nephrology, Romanian Academy of Medical Sciences, Emergency County Hospital , Timisoara , Romania
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Bazzi C, Rizza V, Olivieri G, Casellato D, D'Amico G. Tubular reabsorption of high, middle and low molecular weight proteins according to the tubulo-interstitial damage marker N-acetyl-β-D-glucosaminidase in glomerulonephritis. J Nephrol 2014; 28:541-8. [PMID: 25227764 DOI: 10.1007/s40620-014-0139-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 09/01/2014] [Indexed: 01/16/2023]
Abstract
BACKGROUND Proteinuria, the hallmark of glomerular diseases, is an independent predictor of end-stage renal disease (ESRD) progression. Proteinuria is a mixture of proteins of different molecular weight (MW) dependent on alterations of glomerular filtration barrier (GFB) and reabsorption impairment by proximal tubular epithelial cells (PTECs). We aimed to evaluate the excretion of different-MW proteins according to the tubulo-interstitial damage marker N-acetyl-β-D-glucosaminidase (NAG) in glomerulonephritides (GNs). METHODS In 189 patients [idiopathic membranous nephropathy (IMN) n = 84, primary focal segmental glomerulosclerosis (FSGS) n = 48, crescentic IgA nephropathy (CIgAN) n = 37, minimal change disease (MCD) n = 20] several urinary proteins were measured at biopsy: α2-macroglobulin/creatinine ratio; fractional excretion of IgG, transferrin, albumin and α1-microglobulin, and the NAG/creatinine ratio divided by estimated glomerular filtration rate (eGFR) (NAG/C/eGFR), as NAG excretion is dependent on functioning nephron mass. Protein excretion was compared between 4th vs. 1st quartile of NAG/C/eGFR. RESULTS In IMN, FSGS and CIgAN high-MW proteins excretion (α2-macroglobulin, IgG) was greater than that of middle- (transferrin, albumin) and low-MW proteins (α1-microglobulin) in 4th vs. 1st quartile of NAG/C/eGFR; the mean fold excretion increase of high-MW proteins in 3 GNs was 74.9, higher than that of middle- (34.8) and low-MW proteins (12.0). Higher excretion of high-MW proteins may be dependent on lower reabsorption by PTECs. By contrast, in MCD the difference in excretion of different-MW proteins is probably due to high GFB selectivity. CONCLUSION High-MW protein excretion is dependent on GFB alteration and reduced reabsorption; its prognostic significance is ominous because in several glomerular diseases progression is associated with high-MW protein excretion.
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Affiliation(s)
- Claudio Bazzi
- D'Amico Foundation for Renal Diseases Research, Via Cherubini 6, 20145, Milan, Italy.
| | - Virginia Rizza
- Biochemical Laboratory, San Carlo Borromeo Hospital, Milan, Italy
| | - Giulia Olivieri
- Biochemical Laboratory, San Carlo Borromeo Hospital, Milan, Italy
| | - Daniela Casellato
- Nephrology and Dialysis Unit, San Carlo Borromeo Hospital, Milan, Italy
| | - Giuseppe D'Amico
- D'Amico Foundation for Renal Diseases Research, Via Cherubini 6, 20145, Milan, Italy
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Malyszko J, Bachorzewska-Gajewska H, Dobrzycki S. Biomarkers of Contrast-Induced Nephropathy: Which Ones and What Is Their Clinical Relevance? Interv Cardiol Clin 2014; 3:379-391. [PMID: 28582223 DOI: 10.1016/j.iccl.2014.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Contrast-induced nephropathy, or contrast-induced acute kidney injury (AKI), is an acute impairment of renal function as manifested by an increase in serum creatinine. Different urinary and serum proteins have been intensively investigated as possible biomarkers for the early diagnosis of AKI. Promising candidate biomarkers have the ability to detect an early and graded increase in tubular epithelial cell injury and to distinguish prerenal causes of AKI from acute tubular necrosis. In this article new, emerging biomarkers of contrast-induced AKI are presented and described, of which serum neutrophil gelatinase-associated lipocalin appears to be the most promising.
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Affiliation(s)
- Jolanta Malyszko
- 2nd Department of Nephrology, Medical University, M. Sklodowska-Curie 24a, Bialystok 15-276, Poland.
| | | | - Slawomir Dobrzycki
- Department of Invasive Cardiology, Medical University, M. Sklodowska-Curie 24a, Bialystok 15-276, Poland
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Abstract
The yeast Dsl1 complex, which comprises Dsl1, Tip20, and Sec39/Dsl3, has been shown to participate, as a vesicle-tethering complex, in retrograde trafficking from the Golgi apparatus to the endoplasmic reticulum. Its metazoan counterpart NRZ complex, which comprises NAG, RINT1, and ZW10, is also involved in Golgi-to-ER retrograde transport, but each component of the complex has diverse cellular functions including endosome-to-Golgi transport, cytokinesis, cell cycle checkpoint, autophagy, and mRNA decay. In this review, we summarize the current knowledge of the metazoan NRZ complex and discuss the "moonlighting" functions and intercorrelation of their subunits.
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Affiliation(s)
- Mitsuo Tagaya
- Department of Molecular Life Sciences, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences Hachioji, Japan
| | - Kohei Arasaki
- Department of Molecular Life Sciences, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences Hachioji, Japan
| | - Hiroki Inoue
- Department of Molecular Life Sciences, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences Hachioji, Japan
| | - Hana Kimura
- Department of Molecular Life Sciences, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences Hachioji, Japan
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Sullivan JT, Belloir JA. Activation of an innate immune response in the schistosome-transmitting snail Biomphalaria glabrata by specific bacterial PAMPs. Dev Comp Immunol 2014; 42:256-260. [PMID: 24113288 PMCID: PMC3855869 DOI: 10.1016/j.dci.2013.09.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Revised: 09/26/2013] [Accepted: 09/27/2013] [Indexed: 06/01/2023]
Abstract
Injection of crude lipopolysaccharide (LPS) from Escherichia coli into the hemocoel of Biomphalaria glabrata stimulates cell proliferation in the amebocyte-producing organ (APO). However, it is not known if mitogenic activity resides in the lipid A or O-polysaccharide component of LPS. Moreover, the possible role of substances that commonly contaminate crude LPS and that are known to stimulate innate immune responses in mammals, e.g., peptidoglycan (PGN), protein, or bacterial DNA, is unclear. Therefore, we tested the effects of the following injected substances on the snail APO: crude LPS, ultrapurified LPS (lacking lipoprotein contamination), two forms of lipid A, (diphosphoryl lipid A and Kdo2-lipid A), O-polysaccharide, Gram negative PGN, both crude and ultrapurified (with and without endotoxin activity, respectively), Gram positive PGN, PGN components Tri-DAP and muramyl dipeptide, and bacterial DNA. Whereas crude LPS, ultrapurified LPS, and crude PGN were mitogenic, ultrapurified PGN was not. Moreover, LPS components, PGN components, and bacterial DNA were inactive. These results suggest that it is the intact LPS molecule which stimulates cell division in the APO.
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Affiliation(s)
- John T Sullivan
- Department of Biology, University of San Francisco, San Francisco, CA 94117, USA.
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Wang C, Blough ER, Arvapalli R, Dai X, Paturi S, Manne N, Addagarla H, Triest WE, Olajide O, Wu M. Metabolic syndrome-induced tubulointerstitial injury: role of oxidative stress and preventive effects of acetaminophen. Free Radic Biol Med 2013; 65:1417-1426. [PMID: 24140865 DOI: 10.1016/j.freeradbiomed.2013.10.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 10/01/2013] [Accepted: 10/03/2013] [Indexed: 11/17/2022]
Abstract
The prevalence of metabolic syndrome persistently increases and affects over 30% of U.S. adults. To study how metabolic syndrome may induce tubulointerstitial injury and whether acetaminophen has renal-protective properties, 4-week-old obese Zucker rats were randomly assigned into three groups, control (OC), vehicle dimethyl sulfoxide (OV), and acetaminophen treatment (30 mg/kg/day for 26 weeks), and lean Zucker rats served as healthy controls. Significant tubulointerstitial injuries were observed in both OC and OV animals, evidenced by increased tubular cell death, tubular atrophy/dilation, inflammatory cell infiltration, and fibrosis. These tubulointerstitial alterations were significantly reduced by treatment with a chronic but low dose of acetaminophen, which acted to diminish NADPH oxidase isoforms Nox2 and Nox4 and decrease tubulointerstitial oxidative stress (reduced tissue superoxide and macromolecular oxidation). Decreased oxidative stress by acetaminophen was paralleled by the reduction of tubular proapoptotic signaling (diminished Bax/Bcl-2 ratio and caspase 3 activation) and the alleviation of tubular epithelial-to-mesenchymal transition (decreased transforming growth factor β, connective tissue growth factor, α-smooth muscle actin, and laminin). These data suggest that increased oxidative stress plays a critical role in mediating metabolic syndrome-induced tubulointerstitial injury and provide the first evidence suggesting that acetaminophen may be of therapeutic benefit for the prevention of tubulointerstitial injury.
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Affiliation(s)
- Cuifen Wang
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV 25755, USA; School of Pharmacy, Marshall University, Huntington, WV 25755, USA; Southeast University, Nanjing, Jiangsu, China
| | - Eric R Blough
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV 25755, USA; School of Pharmacy, Marshall University, Huntington, WV 25755, USA.
| | - Ravikumar Arvapalli
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV 25755, USA; School of Pharmacy, Marshall University, Huntington, WV 25755, USA
| | - Xiaoniu Dai
- Southeast University, Nanjing, Jiangsu, China
| | - Satyanarayana Paturi
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV 25755, USA
| | - Nandini Manne
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV 25755, USA; Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA
| | - Hari Addagarla
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV 25755, USA
| | - William E Triest
- Huntington Veterans Affairs Medical Center, Huntington, WV 25704, USA
| | - Omolola Olajide
- Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA
| | - Miaozong Wu
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV 25755, USA; School of Pharmacy, Marshall University, Huntington, WV 25755, USA; Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA.
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Abstract
Host defense peptides (HDPs) are important effector molecules of the innate immune system of vertebrates. These antimicrobial peptides are also present in invertebrates, plants and fungi. HDPs display broad-spectrum antimicrobial activities and fulfill an important role in the first line of defense of many organisms. It is becoming increasingly clear that in the animal kingdom the functions of HDPs are not confined to direct antimicrobial actions. Research in mammals has indicated that HDPs have many immunomodulatory functions and are also involved in other physiological processes ranging from development to wound healing. During the past five years our knowledge about avian HDPs has increased considerably. This review addresses our current knowledge on the evolution, regulation and biological functions of HDPs of birds.
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Affiliation(s)
- Tryntsje Cuperus
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
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Dutta D, Chowdhury G, Pazhani GP, Guin S, Dutta S, Ghosh S, Rajendran K, Nandy RK, Mukhopadhyay AK, Bhattacharya MK, Mitra U, Takeda Y, Nair GB, Ramamurthy T. Vibrio cholerae non-O1, non-O139 serogroups and cholera-like diarrhea, Kolkata, India. Emerg Infect Dis 2013; 19:464-7. [PMID: 23622872 PMCID: PMC3647666 DOI: 10.3201/eid1903.121156] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
We identified 281 Vibrio cholerae non-O1, non-O139 strains from patients with diarrhea in Kolkata, India. Cholera-like diarrhea was the major symptom (66.0%); some patients (20.3%) had severe dehydration. These strains lacked the ctxA gene but many had hlyA, rtxA, and rtxC genes. Pulsed-field gel electrophoresis showed no genetic link among strains.
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Affiliation(s)
- Devarati Dutta
- National Institute of Cholera and Enteric Diseases, Kolkata, India
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Xu Q, Chiu HJ, Farr CL, Jaroszewski L, Knuth MW, Miller MD, Lesley SA, Godzik A, Elsliger MA, Deacon AM, Wilson IA. Structures of a bifunctional cell wall hydrolase CwlT containing a novel bacterial lysozyme and an NlpC/P60 DL-endopeptidase. J Mol Biol 2013; 426:169-84. [PMID: 24051416 DOI: 10.1016/j.jmb.2013.09.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 09/07/2013] [Accepted: 09/11/2013] [Indexed: 11/17/2022]
Abstract
Tn916-like conjugative transposons carrying antibiotic resistance genes are found in a diverse range of bacteria. Orf14 within the conjugation module encodes a bifunctional cell wall hydrolase CwlT that consists of an N-terminal bacterial lysozyme domain (N-acetylmuramidase, bLysG) and a C-terminal NlpC/P60 domain (γ-d-glutamyl-l-diamino acid endopeptidase) and is expected to play an important role in the spread of the transposons. We determined the crystal structures of CwlT from two pathogens, Staphylococcus aureus Mu50 (SaCwlT) and Clostridium difficile 630 (CdCwlT). These structures reveal that NlpC/P60 and LysG domains are compact and conserved modules, connected by a short flexible linker. The LysG domain represents a novel family of widely distributed bacterial lysozymes. The overall structure and the active site of bLysG bear significant similarity to other members of the glycoside hydrolase family 23 (GH23), such as the g-type lysozyme (LysG) and Escherichia coli lytic transglycosylase MltE. The active site of bLysG contains a unique structural and sequence signature (DxxQSSES+S) that is important for coordinating a catalytic water. Molecular modeling suggests that the bLysG domain may recognize glycan in a similar manner to MltE. The C-terminal NlpC/P60 domain contains a conserved active site (Cys-His-His-Tyr) that appears to be specific to murein tetrapeptide. Access to the active site is likely regulated by isomerism of a side chain atop the catalytic cysteine, allowing substrate entry or product release (open state), or catalysis (closed state).
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Affiliation(s)
- Qingping Xu
- Joint Center for Structural Genomics (http://www.jcsg.org); Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Hsiu-Ju Chiu
- Joint Center for Structural Genomics (http://www.jcsg.org); Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Carol L Farr
- Joint Center for Structural Genomics (http://www.jcsg.org); Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Lukasz Jaroszewski
- Joint Center for Structural Genomics (http://www.jcsg.org); Center for Research in Biological Systems, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA; Program on Bioinformatics and Systems Biology, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Mark W Knuth
- Joint Center for Structural Genomics (http://www.jcsg.org); Protein Sciences Department, Genomics Institute of the Novartis Research Foundation, 10675 John Jay Hopkins Drive, San Diego, CA 92121, USA
| | - Mitchell D Miller
- Joint Center for Structural Genomics (http://www.jcsg.org); Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Scott A Lesley
- Joint Center for Structural Genomics (http://www.jcsg.org); Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA; Protein Sciences Department, Genomics Institute of the Novartis Research Foundation, 10675 John Jay Hopkins Drive, San Diego, CA 92121, USA
| | - Adam Godzik
- Joint Center for Structural Genomics (http://www.jcsg.org); Center for Research in Biological Systems, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA; Program on Bioinformatics and Systems Biology, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Marc-André Elsliger
- Joint Center for Structural Genomics (http://www.jcsg.org); Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Ashley M Deacon
- Joint Center for Structural Genomics (http://www.jcsg.org); Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Ian A Wilson
- Joint Center for Structural Genomics (http://www.jcsg.org); Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.
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Peng W, Qin R, Li X, Zhou H. Botany, phytochemistry, pharmacology, and potential application of Polygonum cuspidatum Sieb.et Zucc.: a review. J Ethnopharmacol 2013; 148:729-45. [PMID: 23707210 DOI: 10.1016/j.jep.2013.05.007] [Citation(s) in RCA: 176] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 05/03/2013] [Accepted: 05/03/2013] [Indexed: 05/21/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Polygonum cuspidatum Sieb. et Zucc. (Polygonum cuspidatum), also known as Reynoutria japonica Houtt and Huzhang in China, is a traditional and popular Chinese medicinal herb. Polygonum cuspidatum with a wide spectrum of pharmacological effects has been used for treatment of inflammation, favus, jaundice, scald, and hyperlipemia, etc. AIM OF THE REVIEW The present paper reviews the traditional applications as well as advances in botany, phytochemistry, pharmacodynamics, pharmacokinetics and toxicology of this plant. Finally, the tendency and perspective for future investigation of this plant are discussed, too. MATERIALS AND METHODS A systematic review of literature about Polygonum cuspidatum is carried out using resources including classic books about Chinese herbal medicine, and scientific databases including Pubmed, SciFinder, Scopus, the Web of Science and others. RESULTS Polygonum cuspidatum is widely distributed in the world and has been used as a traditional medicine for a long history in China. Over 67 compounds including quinones, stilbenes, flavonoids, counmarins and ligans have been isolated and identified from this plant. The root of this plant is used as the effective agent in pre-clinical and clinical practice for regulating lipids, anti-endotoxic shock, anti-infection and anti-inflammation, anti-cancer and other diseases in China and Japan. CONCLUSION As an important traditional Chinese medicine, Polygonum cuspidatum has been used for treatment of hyperlipemia, inflammation, infection and cancer, etc. Because there is no enough systemic data about the chemical constituents and their pharmacological effects or toxicities, it is important to investigate the pharmacological effects and molecular mechanisms of this plant based on modern realization of diseases' pathophysiology. Drug target-guided and bioactivity-guided isolation and purification of the chemical constituents from this plant and subsequent evaluation of their pharmacologic effects will promote the development of new drug and make sure which chemical constituent or multiple ingredients contributes its pharmacological effects. Additionally, chemicals and their pharmacological effects of the other parts such as the aerial part of this plant should be exploited in order to avoid resource waste and find new chemical constituents.
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Affiliation(s)
- Wei Peng
- Department of Pharmacology, College of Pharmacy, The Third Military Medical University, Chongqing 400038, PR China
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Zhao G, Haskins N, Jin Z, M Allewell N, Tuchman M, Shi D. Structure of N-acetyl-L-glutamate synthase/kinase from Maricaulis maris with the allosteric inhibitor L-arginine bound. Biochem Biophys Res Commun 2013; 437:585-90. [PMID: 23850694 DOI: 10.1016/j.bbrc.2013.07.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 07/01/2013] [Indexed: 11/25/2022]
Abstract
Maricaulis maris N-acetylglutamate synthase/kinase (mmNAGS/K) catalyzes the first two steps in L-arginine biosynthesis and has a high degree of sequence and structural homology to human N-acetylglutamate synthase, a regulator of the urea cycle. The synthase activity of both mmNAGS/K and human NAGS are regulated by L-arginine, although L-arginine is an allosteric inhibitor of mmNAGS/K, but an activator of human NAGS. To investigate the mechanism of allosteric inhibition of mmNAGS/K by L-arginine, we have determined the structure of the mmNAGS/K complexed with L-arginine at 2.8 Å resolution. In contrast to the structure of mmNAGS/K in the absence of L-arginine where there are conformational differences between the four subunits in the asymmetric unit, all four subunits in the L-arginine liganded structure have very similar conformations. In this conformation, the AcCoA binding site in the N-acetyltransferase (NAT) domain is blocked by a loop from the amino acid kinase (AAK) domain, as a result of a domain rotation that occurs when L-arginine binds. This structural change provides an explanation for the allosteric inhibition of mmNAGS/K and related enzymes by L-arginine. The allosterically regulated mechanism for mmNAGS/K differs significantly from that for Neisseria gonorrhoeae NAGS (ngNAGS). To define the active site, several residues near the putative active site were mutated and their activities determined. These experiments identify roles for Lys356, Arg386, Asn391 and Tyr397 in the catalytic mechanism.
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Affiliation(s)
- Gengxiang Zhao
- Center for Genetic Medicine Research, Washington, DC 20010, USA
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Zhang C, Liang Y, Lei L, Zhu G, Chen X, Jin T, Wu Q. Hypermethylations of RASAL1 and KLOTHO is associated with renal dysfunction in a Chinese population environmentally exposed to cadmium. Toxicol Appl Pharmacol 2013; 271:78-85. [PMID: 23665422 DOI: 10.1016/j.taap.2013.04.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 04/27/2013] [Accepted: 04/30/2013] [Indexed: 10/26/2022]
Abstract
Exposure to cadmium (Cd) can affect both DNA methylation and renal function, but there are few examples of the association between epigenetic markers and Cd-induced kidney damage. It has been suggested that hypermethylation of the genes RASAL1 and KLOTHO is associated with renal fibrogenesis. To investigate whether hypermethylation of RASAL1 and KLOTHO in peripheral blood DNA can be associated with Cd exposure and/or Cd-induced renal dysfunction, the degrees of methylation of RASAL1 and KLOTHO in peripheral blood DNA from 81 residents in Cd-polluted and non-polluted areas were measured using bisulfate-PCR-pyrosequencing. Changes in blood cadmium (BCd), urinary cadmium (UCd), and kidney parameters were measured, and the glomerular filtration rate (eGFR) was estimated. The levels of BCd and UCd correlated positively with the levels of DNA methylation in RASAL1 and in KLOTHO. The more heavily exposed residents (BCd, 4.23-13.22μg/L; UCd, 8.65-32.90μg/g creatinine) exhibited obvious renal dysfunction. Notably, when Cd concentration in blood and urine was adjusted, the increased methylation level in RASAL1 was inversely correlated with eGFR (P<0.01) but the relationship between hypermethylation of KLOTHO and eGFR was not statistically significant. The methylation of RASAL1 increased along with the increased abnormal prevalence of eGFR. Our findings suggest that Cd exposure can induce the hypermethylation of RASAL1 and KLOTHO. Hypermethylation of RASAL1 may be an indicator of the progress for chronic kidney disease.
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Affiliation(s)
- Chen Zhang
- School of Public Health, Fudan University, 130 DongAn Road, Shanghai 200032, China
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Chen JK, Shen CR, Yeh CH, Fang BS, Huang TL, Liu CL. N-acetyl glucosamine obtained from chitin by chitin degrading factors in Chitinbacter tainanesis. Int J Mol Sci 2011; 12:1187-95. [PMID: 21541052 DOI: 10.3390/ijms12021187] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Revised: 02/15/2011] [Accepted: 02/15/2011] [Indexed: 12/02/2022] Open
Abstract
A novel chitin-degrading aerobe, Chitinibacter tainanensis, was isolated from a soil sample from southern Taiwan, and was proved to produce N-acetyl glucosamine (NAG). Chitin degrading factors (CDFs) were proposed to be the critical factors to degrade chitin in this work. When C. tainanensis was incubated with chitin, CDFs were induced and chitin was converted to NAG. CDFs were found to be located on the surface of C. tainanensis. N-Acetylglucosaminidase (NAGase) and endochitinase activities were found in the debris, and the activity of NAGase was much higher than that of endochitinase. The optimum pH of the enzymatic activity was about 7.0, while that of NAG production by the debris was 5.3. These results suggested that some factors in the debris, in addition to NAGase and endochitinase, were crucial for chitin degradation.
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Barregard L, Trachtenberg F, McKinlay S. Renal effects of dental amalgam in children: the New England children's amalgam trial. Environ Health Perspect 2008; 116:394-9. [PMID: 18335109 PMCID: PMC2265055 DOI: 10.1289/ehp.10504] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2007] [Accepted: 11/23/2007] [Indexed: 05/24/2023]
Abstract
BACKGROUND Mercury is nephrotoxic and dental amalgam is a source of mercury exposure. METHODS Children 6-10 years of age (n = 534) with two or more posterior teeth with caries but no prior amalgam restorations, were randomized to one of two treatments--amalgam or resin composite (white fillings)--used for caries treatment during 5 years of follow-up. The primary outcome was change in IQ, but important secondary outcomes were effects on markers of glomerular and tubular kidney function: urinary excretion of albumin, alpha-1-microglobulin (A1M), gamma-glutamyl transpeptidase (gamma-GT), and N-acetyl-beta-d-glucosaminidase (NAG). These markers were measured on several occasions during the trial, together with urinary mercury and covariates. We evaluated the results using repeated-measures analyses. RESULTS There were no significant differences between treatment groups in average levels of renal biomarkers, nor significant effects of number of dental amalgams on these markers. There was, however, a significantly increased prevalence of microalbuminuria (MA) among children in the amalgam group in years 3-5 (adjusted odds ratio 1.8; 95% confidence interval, 1.1-2.9). Most of these cases are likely to be temporary MA, but 10 children in the amalgam group had MA in both years 3 and 5, versus 2 children in the composite group (p = 0.04). There were no differences in the occurrence of high levels of renal tubular markers (A1M, gamma-GT, or NAG). CONCLUSIONS The increase in MA may be a random finding, but should be tested further. The results did not support recent findings in an observational study of an effect of low-level mercury on tubular biomarkers in children.
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Affiliation(s)
- Lars Barregard
- Department of Occupational and Environmental Medicine, Sahlgrenska University Hospital and Academy, Gothenburg, Sweden
| | | | - Sonja McKinlay
- New England Research Institutes, Watertown, Massachusetts, USA
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