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Daza MA, Miró G, Fragío C, Perez-Montero B, Esteban SB, Fermín ML. Urinary Tamm-Horsfall protein excretion is a potential early biomarker of renal distal tubular damage in canine leishmaniosis. Vet Parasitol 2024; 331:110265. [PMID: 39094329 DOI: 10.1016/j.vetpar.2024.110265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 06/16/2024] [Accepted: 07/12/2024] [Indexed: 08/04/2024]
Abstract
This study evaluates distal tubular damage in early stages of renal disease in dogs with naturally acquired leishmaniosis. Pherograms of urinary proteins separated in vertical electrophoresis system (SDS-PAGE) were evaluated. Peptide fingerprint and fragmentation (MALDI-TOF TOF) identified bands located at 100 and 60 kDa as Tamm-Horsfall protein (THP) and albumin, respectively. The variables examined were: urine protein to creatinine ratio (UPC), total number of bands, quantification of THP urinary excretion through the optical density (OD %) of bands located at 100 kDa, blood creatinine, and urine specific gravity (USG). Positive correlation was found between UPC and the number of bands (ρ = 0.75849, P = <0.0001). Negative correlation was identified between UPC and OD % of 100 kDa bands (ρ = -0.85332, P = <0.0001), and the number of bands and OD % of 100 kDa bands (ρ = -0.74479, P = <0.0001). The area under the ROC curve was 0.991 (95 % CI, 0.976-1). The optimal cut-off UPC that better discriminated between urines with high or low OD% of THP was 0.46 with 92.6 % sensitivity and 96.2 % specificity. Our findings indicate that non azotemic dogs with borderline proteinuria might excrete low amount of THP, which could suggest tubular damage in early stages of chronic kidney disease.
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Affiliation(s)
- María A Daza
- Small Animal Emergency and ICU Service, Veterinary Teaching Hospital, Complutense University, Avda Puerta Hierro sn., Madrid 28040, Spain.
| | - Guadalupe Miró
- Dept. of Animal Health, Faculty of Veterinary Medicine, Complutense University, Avda Puerta hierro sn., Madrid 28040, Spain
| | - Cristina Fragío
- Small Animal Emergency and ICU Service, Veterinary Teaching Hospital, Complutense University, Avda Puerta Hierro sn., Madrid 28040, Spain; Dept. of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Complutense University, Avda Puerta hierro sn., Madrid 28040, Spain
| | - Blanca Perez-Montero
- Clinical Pathology Service, Veterinary Teaching Hospital, Complutense University, Avda Puerta Hierro sn., Madrid 28040, Spain
| | - Sheila Belinchón Esteban
- Small Animal Emergency and ICU Service, Veterinary Teaching Hospital, Complutense University, Avda Puerta Hierro sn., Madrid 28040, Spain
| | - María L Fermín
- Dept. of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Complutense University, Avda Puerta hierro sn., Madrid 28040, Spain
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Marečáková N, Kačírová J, Tóthová C, Maďari A, Maďar M, Kuricová M, Horňák S. Serum and Urinary Uromodulin in Dogs with Early Chronic Kidney Disease vs. Healthy Canine Population. Animals (Basel) 2024; 14:2099. [PMID: 39061561 PMCID: PMC11273724 DOI: 10.3390/ani14142099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/28/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024] Open
Abstract
Serum and urinary uromodulin are evaluated as potential biomarkers of kidney disease. The aim of our research was to select a more appropriate form of uromodulin for the diagnosis of early stages of chronic kidney disease (CKD). We also focused on the influence of age and gender in one breed on uromodulin and on the possible interbreed differences. Serum uromodulin had the lowest values in dogs younger than 2 years but no effect of gender, breed, or CKD was observed. Urinary uromodulin indexed to urinary creatinine was significantly reduced in dogs in stage 2 of CKD (p = 0.003) in contrast to uromodulin converted to urine specific gravity. Urinary uromodulin with both corrections was significantly lower in Belgian shepherds compared to German shepherds (p < 0.0001, p = 0.0054) but was not influenced by gender or age. In stage 1 of CKD, urinary uromodulin correlated with kidney disease markers SDMA (p = 0.0424, p = 0.0214) and UPC (p = 0.0050, p = 0.0024). Urinary uromodulin appears to be more associated with CKD than serum uromodulin. Further studies with a larger number of patients are needed for the suitability of urinary uromodulin as a marker of early-stage disease.
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Affiliation(s)
- Nikola Marečáková
- Small Animal Clinic, University Veterinary Hospital, University of Veterinary Medicine and Pharmacy in Kosice, 041 81 Kosice, Slovakia; (N.M.); (M.K.); (S.H.)
| | - Jana Kačírová
- Institute of Plant Genetics and Biotechnology, Plant Science and Biodiversity Centre, Slovak Academy of Sciences, 949 01 Nitra, Slovakia
| | - Csilla Tóthová
- Clinic of Ruminants, University Veterinary Hospital, University of Veterinary Medicine and Pharmacy in Kosice, 041 81 Kosice, Slovakia;
| | - Aladár Maďari
- Small Animal Clinic, University Veterinary Hospital, University of Veterinary Medicine and Pharmacy in Kosice, 041 81 Kosice, Slovakia; (N.M.); (M.K.); (S.H.)
| | - Marián Maďar
- Department of Microbiology and Immunology, University of Veterinary Medicine and Pharmacy in Kosice, 041 81 Kosice, Slovakia;
| | - Mária Kuricová
- Small Animal Clinic, University Veterinary Hospital, University of Veterinary Medicine and Pharmacy in Kosice, 041 81 Kosice, Slovakia; (N.M.); (M.K.); (S.H.)
| | - Slavomír Horňák
- Small Animal Clinic, University Veterinary Hospital, University of Veterinary Medicine and Pharmacy in Kosice, 041 81 Kosice, Slovakia; (N.M.); (M.K.); (S.H.)
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Paukner K, Filipejova Z, Mareš J, Vávra M, Rehakova K, Proks P, Gabriel V, Crha M. A comprehensive analysis of albuminuria in canine chronic kidney disease. Vet Med Sci 2024; 10:e1403. [PMID: 38419297 PMCID: PMC10902581 DOI: 10.1002/vms3.1403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 01/29/2024] [Accepted: 02/09/2024] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND Albuminuria, an important marker of decreased kidney function in chronic kidney disease (CKD), is not routinely used for CKD detection or proteinuria appearance. Its relationships with biochemical parameters and blood pressure in dogs are poorly understood. OBJECTIVES This study aimed to evaluate the relationship of albuminuria with various CKD markers, its correlation with the urinary protein to creatinine ratio (UPC), and hypertension in dogs with early stages of CKD. It also sought to determine the usability of the urinary albumin to creatinine ratio (UAC) for CKD screening. METHODS The study reviewed records of 102 dogs, categorising them into four groups based on disease status. UAC and UPC ratio, biochemistry and haematology variables, age, and systolic blood pressure were determined. RESULTS The Pearson's correlation coefficient between log-transformed values of UPC and UAC was r = 0.902 (95% CI: 0.87 to 0.93). Median UAC ratio values were 2.1 mg/g for the Healthy control group (n = 17), 54.2 mg/g for early stages CKD (n = 42), 5.8 mg/g for Acute sick control (n = 30), and 104 mg/g for Chronic sick control (n = 13). Thresholding UAC ratio as an indicator for impaired kidney function with the threshold of 10 mg/g (established based on the receiver operating characteristic curve) had a sensitivity 81.8%, specificity of 89.4%, positive predictive value (PPV) 90%, and negative predictive value (NPV) 80.1%. The correlation of UAC with biochemistry and haematology variables was statistically significant; for SDMA (μg/L), it was r = 0.566 and for other variables, it was weak to moderate. UAC was markedly elevated in cases of severe hypertension. CONCLUSIONS UAC ratio was significantly different among dogs with impaired and not impaired kidney function. The correlation strength for the UAC and UPC ratios was high. UAC ratio may be a promising marker for proteinuria analysis in dogs with CKD or other kidney function alterations.
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Affiliation(s)
- Karel Paukner
- Small Animal ClinicUniversity of Veterinary Sciences BrnoBrnoCzech Republic
- Center for Experimental MedicineInstitute for Clinical and Experimental MedicinePragueCzech Republic
| | - Zita Filipejova
- Small Animal ClinicUniversity of Veterinary Sciences BrnoBrnoCzech Republic
| | - Jan Mareš
- Department of Data ScienceInstitute for Clinical and Experimental MedicinePragueCzech Republic
| | - Miloš Vávra
- Small Animal ClinicUniversity of Veterinary Sciences BrnoBrnoCzech Republic
| | - Kristina Rehakova
- Small Animal Clinical LaboratoryUniversity of Veterinary Sciences BrnoBrnoCzech Republic
| | - Pavel Proks
- Small Animal ClinicUniversity of Veterinary Sciences BrnoBrnoCzech Republic
| | - Vojtech Gabriel
- Department of Biomedical SciencesCollege of Veterinary Medicine, Iowa State UniversityAmesIowaUSA
| | - Michal Crha
- Small Animal ClinicUniversity of Veterinary Sciences BrnoBrnoCzech Republic
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Gil L, Wsol M, Fernández-Barredo S, Navarro PF. Urinary Electrophoretograms Performed by Capillary Electrophoresis: Comparison between Dogs and Cats. Gels 2023; 9:544. [PMID: 37504423 PMCID: PMC10379986 DOI: 10.3390/gels9070544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 06/29/2023] [Accepted: 07/01/2023] [Indexed: 07/29/2023] Open
Abstract
Electrophoresis of urine to evaluate different urinary proteins has been used in recent years in veterinary medicine, as it can be a useful laboratory tool in the early detection of kidney damage. However, urinary capillary electrophoresis (UCE) has not been reported in healthy cats. In healthy dogs, reference intervals have been established and can be compared with pathological samples as these provide an easily interpretable pattern. The electrophoretogram in this study is divided into five fractions (F1-F5) by serum (albumin; alpha1-globulin; alpha2-globulin; beta-globulin; and gamma-globulin). Urine samples from 14 healthy cats were obtained by eco-guided cystocentesis. UCE was run in all samples and compared to 123 dog electrophoretograms from a previously published study. Fraction 2 (alpha1-globulin) was statistically decreased in cats (G1) compared to dogs (G2). Fraction 4 (beta-globulin) was statistically augmented in cats compared to the canine population (G2). Fraction 5 (gamma-globulin) was statistically decreased in cats (G1) compared to dogs (G2). No statistical correlation was found between each cat's serum and urinary fractions. The results of the present study suggest that UCE patterns in cats are similar to the ones described in dogs. UCE can be a non-invasive new diagnostic tool in cats as pathological patterns can be compared to normal ones.
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Affiliation(s)
- Laura Gil
- Department of Veterinary Medicine and Surgery, Universidad Católica de Valencia San Vicente Mártir, 46001 Valencia, Spain
| | - Martyna Wsol
- Facultad de Veterinaria, Universidad Católica de Valencia San Vicente Mártir, 46001 Valencia, Spain
| | | | - Paula Fátima Navarro
- Department of Veterinary Medicine and Surgery, Universidad Católica de Valencia San Vicente Mártir, 46001 Valencia, Spain
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Bilić P, Horvatić A, Kuleš J, Gelemanović A, Beer Ljubić B, Mũnoz-Prieto A, Gotić J, Žubčić D, Barić Rafaj R, Mrljak V. Serum and urine profiling by high-throughput TMT-based proteomics for the investigation of renal dysfunction in canine babesiosis. J Proteomics 2023; 270:104735. [PMID: 36174949 DOI: 10.1016/j.jprot.2022.104735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/14/2022] [Accepted: 09/19/2022] [Indexed: 02/01/2023]
Abstract
Canine babesiosis is a tick-borne disease caused by Babesia canis, with acute kidney injury as one of the common complications. In the study 8 healthy control dogs and 22 dogs with naturally occurring babesiosis were enrolled, with the aim to analyse differences in serum and urinary proteomes between healthy dogs and dogs with different degree of renal dysfunction in babesiosis using a label-based high-throughput quantitative proteomic approach. In serum, 58 proteins were found differentially abundant between healthy controls and groups of dogs with different degrees of renal dysfunction in babesiosis, while in urine there were 259 differentially abundant proteins. In addition, altered biological pathways were detected in the diseased dogs using bioinformatics tools and validation of several candidate biomarkers was performed. SIGNIFICANCE: The main aim of this comprehensive study was to perform analyses of serum and urinary proteomes of dogs with renal dysfunction in babesiosis compared to healthy dogs using, for the first time, a high-throughput proteomic method and functional enrichment analyses. Serum and urine samples of the same dogs were investigated in order to gain a more complete picture of pathologic changes taking place in renal dysfunction in babesiosis. We highlighted two putative biomarkers validated herein which could be of importance for early diagnosis of renal dysfunction in canine babesiosis, as they are easily accessible from urine and their concentration rises before the appearance of azotaemia: urinary neutrophil gelatinase-associated lipocalin (NGAL) and urinary liver-type fatty acid-binding protein (L-FABP).
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Affiliation(s)
- Petra Bilić
- Internal Diseases Clinic, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | - Anita Horvatić
- Department of Chemistry and Biochemistry, Faculty of Food Technology and Biotechnology, University of Zagreb, Zagreb, Croatia
| | - Josipa Kuleš
- Department of Chemistry and Biochemistry, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia.
| | | | - Blanka Beer Ljubić
- Internal Diseases Clinic, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | - Alberto Mũnoz-Prieto
- Internal Diseases Clinic, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | - Jelena Gotić
- Internal Diseases Clinic, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | - Damir Žubčić
- Internal Diseases Clinic, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | - Renata Barić Rafaj
- Department of Chemistry and Biochemistry, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | - Vladimir Mrljak
- Internal Diseases Clinic, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
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Navarro PF, Fernández-Barredo S, Gil L. Urinary phoretograms performed by capillary electrophoresis in dogs with chronic disease with or without Leishmania infantum infection. Front Vet Sci 2022; 9:979669. [PMID: 36467666 PMCID: PMC9716102 DOI: 10.3389/fvets.2022.979669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 10/28/2022] [Indexed: 07/29/2023] Open
Abstract
INTRODUCTION The study of early markers to detect kidney malfunction has increased in recent years since serum markers, such as creatinine increase when there is a 75% loss of renal mass. Urinary capillary electrophoresis (UCE) is an available laboratory technique that provides an easily interpretable electrophoretic pattern. This pattern in our study has been divided into five fractions as it is done in serum: fraction 1 migrating in the albumin zone, fraction 2 in the alpha1-globulins zone, fraction 3 in the alpha2-globulins zone, fraction 4 in the beta-globulins zone, and fraction 5 in the gamma globulins zone. UCE can be useful in the early diagnosis of renal disease. MATERIAL AND METHODS In this study, UCE was performed in dogs with azotemia and proteinuria due to chronic kidney disease (CKD) not related to Leishmania infantum (L. infantum) infection (G1, n = 11) and dogs with CKD related to L. infantum infection (G2, n = 17) and compared with reference intervals from healthy dogs (G0, n = 123), with the aim of comparing their phoretograms and assessing changes in the fractions of the phoretograms based on the health status of individuals. RESULTS Fraction 2 was statistically augmented in dogs with CKD (G1) when compared with the healthy population (G0) and dogs infected by L. infantum (G2). Fraction 3 was statistically increased in dogs with CKD (G1) and dogs infected by L. infantum (G2) compared with G0. Fraction 4 was found to be statistically decreased in dogs with CKD (G1) and dogs infected by L. infantum (G2) compared with G0. Fraction 5 was statistically higher in dogs with L. infantum (G2) compared with G0 and dogs with CKD (G1). No statistical relationship was found between the protein to creatinine ratio and different fractions from the urinary phoretogram in the study population. No statistical relationship was found between serum and urine fractions in the study population. DISCUSSION The results of the present study suggest that UCE is a promising non-invasive technique that might be used as a part of the diagnostic and follow-up in dogs with kidney disease due to different pathologies.
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Affiliation(s)
- Paula Fátima Navarro
- Department of Veterinary Medicine and Surgery, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
| | - Salceda Fernández-Barredo
- Department of Veterinary Medicine and Surgery, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
- CEDIVET (Centro Diagnóstico Veterinario), Valencia, Spain
| | - Laura Gil
- Department of Veterinary Medicine and Surgery, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
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Seo D, Yang Y, Hwang S, Jung J, Cho S, Choi G, Kim Y. Serum uromodulin in dogs with chronic kidney disease. J Vet Intern Med 2022; 36:2071-2078. [PMID: 36330885 PMCID: PMC9708433 DOI: 10.1111/jvim.16579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 10/19/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Serum uromodulin concentration has been described as a novel biomarker of chronic kidney disease (CKD) in humans but not dogs. OBJECTIVE To evaluate the serum uromodulin concentration in dogs with CKD and assess its diagnostic performance in distinguishing dogs with CKD from healthy dogs. ANIMALS Forty-nine dogs with CKD (International Renal Interest Society [IRIS] Stage 1, n = 23; Stage 2, n = 20; Stage 3-4, n = 6) and 25 healthy controls. METHODS Prospective, observational study. Serum uromodulin concentration was measured using a canine-specific enzyme-linked immunosorbent assay (ELISA), and its correlation with conventional renal markers was analyzed. RESULTS Serum uromodulin concentrations were significantly lower in the CKD group than in the control group (P < .001), but no significant difference was observed among stages of CKD. A negative correlation was observed between serum uromodulin concentration and conventional renal markers (blood urea nitrogen concentration, r = -.60, P < .0001; serum creatinine concentration, r = -.46, P < .0001; serum symmetric dimethylarginine concentration [SDMA], r = -.65, P < .0001). In receiver operating characteristic analysis, the area under the curve (AUC) of uromodulin (AUC, 0.97; 95% confidence interval [CI], 0.94-1.00) was higher than that of SDMA (AUC, 0.87; 95% CI, 0.79-0.95) for CKD diagnosis (P = .01). The AUC of uromodulin (AUC, 0.95; 95% CI, 0.89-1.00) also was higher than that of SDMA (AUC, 0.72; 95% CI, 0.58-0.87) in distinguishing dogs with Stage 1 CKD from controls (P = .001). CONCLUSIONS AND CLINICAL IMPORTANCE Serum uromodulin concentration is decreased in dogs with CKD. Thus, serum uromodulin may be a valuable diagnostic marker for CKD in dogs, particularly in identifying early-stage CKD.
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Affiliation(s)
- Dansong Seo
- Laboratory of Clinical Pathology, College of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Yeseul Yang
- Laboratory of Clinical Pathology, College of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Sung‐Hyun Hwang
- Biomedical Research InstituteSeoul National University Bundang HospitalSeongnamRepublic of Korea
| | - Jae‐Ha Jung
- Laboratory of Clinical Pathology, College of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
- BK 21 FOUR Program for Future Veterinary Medicine Leading Education and Research Center, College of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Soyeon Cho
- Laboratory of Clinical Pathology, College of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Goeun Choi
- Laboratory of Clinical Pathology, College of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Yongbaek Kim
- Laboratory of Clinical Pathology, College of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
- Research Institute for Veterinary Science, College of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
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Obert LA, Elmore SA, Ennulat D, Frazier KS. A Review of Specific Biomarkers of Chronic Renal Injury and Their Potential Application in Nonclinical Safety Assessment Studies. Toxicol Pathol 2021; 49:996-1023. [PMID: 33576319 DOI: 10.1177/0192623320985045] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A host of novel renal biomarkers have been developed over the past few decades which have enhanced monitoring of renal disease and drug-induced kidney injury in both preclinical studies and in humans. Since chronic kidney disease (CKD) and acute kidney injury (AKI) share similar underlying mechanisms and the tubulointerstitial compartment has a functional role in the progression of CKD, urinary biomarkers of AKI may provide predictive information in chronic renal disease. Numerous studies have explored whether the recent AKI biomarkers could improve upon the standard clinical biomarkers, estimated glomerular filtration rate (eGFR), and urinary albumin to creatinine ratio, for predicting outcomes in CKD patients. This review is an introduction to alternative assays that can be utilized in chronic (>3 months duration) nonclinical safety studies to provide information on renal dysfunction and to demonstrate specific situations where these assays could be utilized in nonclinical drug development. Novel biomarkers such as symmetrical dimethyl arginine, dickkopf homolog 3, and cystatin C predict chronic renal injury in animals, act as surrogates for GFR, and may predict changes in GFR in patients over time, ultimately providing a bridge from preclinical to clinical renal monitoring.
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Affiliation(s)
- Leslie A Obert
- 549350GlaxoSmithKline (GSK), Nonclinical Safety, Collegeville, PA, USA
| | - Susan A Elmore
- Cellular and Molecular Pathology Branch, National Toxicology Program (NTP), 6857National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | - Daniela Ennulat
- 549350GlaxoSmithKline (GSK), Nonclinical Safety, Collegeville, PA, USA
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Urinary proteome and metabolome in dogs (Canis lupus familiaris): The effect of chronic kidney disease. J Proteomics 2020; 222:103795. [PMID: 32335294 DOI: 10.1016/j.jprot.2020.103795] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 04/14/2020] [Accepted: 04/20/2020] [Indexed: 02/06/2023]
Abstract
Chronic kidney disease (CKD) is a progressive and irreversible disease. Although urine is an ideal biological sample for proteomics and metabolomics studies, sensitive and specific biomarkers are currently lacking in dogs. This study characterised dog urine proteome and metabolome aiming to identify and possibly quantify putative biomarkers of CKD in dogs. Twenty-two healthy dogs and 28 dogs with spontaneous CKD were selected and urine samples were collected. Urinary proteome was separated by SDS-PAGE and analysed by mass spectrometry, while urinary metabolome was analysed in protein-depleted samples by 1D 1H NMR spectra. The most abundant proteins in urine samples from healthy dogs were uromodulin, albumin and, in entire male dogs, arginine esterase. In urine samples from CKD dogs, the concentrations of uromodulin and albumin were significantly lower and higher, respectively, than in healthy dogs. In addition, these samples were characterised by a more complex protein pattern indicating mixed glomerular (protein bands ≥65 kDa) and tubular (protein bands <65 kDa) proteinuria. Urine spectra acquired by NMR allowed the identification of 86 metabolites in healthy dogs, belonging to 49 different pathways mainly involved in amino acid metabolism, purine and aminoacyl-tRNA biosynthesis or tricarboxylic acid cycle. Seventeen metabolites showed significantly different concentrations when comparing healthy and CKD dogs. In particular, carnosine, trigonelline, and cis-aconitate, might be suggested as putative biomarkers of CKD in dogs. SIGNIFICANCE: Urine is an ideal biological sample, however few proteomics and metabolomics studies investigated this fluid in dogs and in the context of CKD (chronic kidney disease). In this research, applying a multi-omics approach, new insights were gained regarding the molecular changes triggered by this disease in canine urinary proteome and metabolome. In particular, the involvement of the tubular component was highlighted, suggesting uromodulin, trigonelline and carnosine as possible biomarkers of CKD in dogs.
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10
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Neely BA, Prager KC, Bland AM, Fontaine C, Gulland FM, Janech MG. Proteomic Analysis of Urine from California Sea Lions ( Zalophus californianus): A Resource for Urinary Biomarker Discovery. J Proteome Res 2018; 17:3281-3291. [PMID: 30113852 DOI: 10.1021/acs.jproteome.8b00416] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Urinary markers for the assessment of kidney diseases in wild animals are limited, in part, due to the lack of urinary proteome data, especially for marine mammals. One of the most prevalent kidney diseases in marine mammals is caused by Leptospira interrogans, which is the second most common etiology linked to stranding of California sea lions ( Zalophus californianus). Urine proteins from 11 sea lions with leptospirosis kidney disease and eight sea lions without leptospirosis or kidney disease were analyzed using shotgun proteomics. In total, 2694 protein groups were identified, and 316 were differentially abundant between groups. Major urine proteins in sea lions were similar to major urine proteins in dogs and humans except for the preponderance of resistin, lysozyme C, and PDZ domain containing 1, which appear to be over-represented. Previously reported urine protein markers of kidney injury in humans and animals were also identified. Notably, neutrophil gelatinase-associated lipocalin, osteopontin, and epidermal fatty acid binding protein were elevated over 20-fold in the leptospirosis-infected sea lions. Consistent with leptospirosis infection in rodents, urinary proteins associated with the renin-angiotensin system were depressed, including neprilysin. This study represents a foundation from which to explore the clinical use of urinary protein markers in California sea lions.
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Affiliation(s)
- Benjamin A Neely
- Marine Biochemical Sciences Group , National Institute of Standards and Technology , NIST Charleston , Charleston , South Carolina 29412 , United States
| | - Katherine C Prager
- Department of Ecology and Evolutionary Biology , University of California Los Angeles , Los Angeles , California 90095 , United States
| | - Alison M Bland
- Hollings Marine Laboratory , College of Charleston , Charleston , South Carolina 29412 , United States
| | - Christine Fontaine
- The Marine Mammal Center , 2000 Bunker Road , Sausalito , California 94965 , United States
| | - Frances M Gulland
- The Marine Mammal Center , 2000 Bunker Road , Sausalito , California 94965 , United States
| | - Michael G Janech
- Hollings Marine Laboratory , College of Charleston , Charleston , South Carolina 29412 , United States
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Chacar F, Kogika M, Sanches TR, Caragelasco D, Martorelli C, Rodrigues C, Capcha JMC, Chew D, Andrade L. Urinary Tamm-Horsfall protein, albumin, vitamin D-binding protein, and retinol-binding protein as early biomarkers of chronic kidney disease in dogs. Physiol Rep 2018; 5:5/11/e13262. [PMID: 28576851 PMCID: PMC5471429 DOI: 10.14814/phy2.13262] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 03/27/2017] [Accepted: 03/28/2017] [Indexed: 01/06/2023] Open
Abstract
Proteinuria is a marker and mediator of chronic kidney disease (CKD). In clinical practice, the urinary protein‐to‐creatinine ratio (UP/C) is of limited usefulness, because it indicates only the magnitude of proteinuria and not the origin of the loss (glomerular or tubular). The complete assessment of proteinuria includes quantitative and qualitative evaluations, both of which are required in order to optimize the therapy. In addition to measuring the UP/C, we performed SDS‐PAGE and western blotting to determine the expression of albumin, vitamin D‐binding protein (VDBP), retinol‐binding protein (RBP), and Tamm‐Horsfall protein (THP) in urine samples of 49 dogs: healthy (control) dogs (n = 9); and dogs with CKD (n = 40), stratified by stage. In the dogs with stage 3 or 4 CKD, there was a predominance of tubular proteins. Neither VDBP nor RBP was observed in the urine of the control dogs. Among the dogs with stage 1 or 2 CKD, VDBP and RBP were detected in those without proteinuria or with borderline proteinuria. The expression of urinary albumin was significantly higher in the stage 4 group than in any other group (P ≤ 0.01). In the stage 4 group, urinary THP was either undetectable or lower than in the control group (P ≤ 0.01). In conclusion, urinary VDBP and RBP might act as early markers of kidney injury, and a decrease in urinary THP could be an indicator of CKD progression.
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Affiliation(s)
- Fernanda Chacar
- Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Márcia Kogika
- Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Talita R Sanches
- Division of Nephrology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Douglas Caragelasco
- Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Cínthia Martorelli
- Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Camila Rodrigues
- Division of Nephrology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Jose Manuel C Capcha
- Division of Nephrology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Dennis Chew
- Department of Veterinary Clinical Sciences, Ohio State University, Columbus, Ohio
| | - Lúcia Andrade
- Division of Nephrology, School of Medicine, University of São Paulo, São Paulo, Brazil
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Rossi G, Bertazzolo W, Binnella M, Scarpa P, Paltrinieri S. Measurement of proteinuria in dogs: analytic and diagnostic differences using 2 laboratory methods. Vet Clin Pathol 2016; 45:450-8. [PMID: 27564569 DOI: 10.1111/vcp.12388] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Urinary protein-to-creatinine (UPC) ratio is an early diagnostic and prognostic marker of renal disease in dogs. Pyrogallol red molybdate (PRM) and Coomassie brilliant blue (CBB) are the most popular dye-binding assays for measurement of proteinuria. Published guidelines recommend strict cut-off points to substage patients with chronic renal diseases, irrespective of the assay applied. However, analytic variability and method-dependent differences could affect substaging of patients. OBJECTIVES The aims of this study were to analytically validate the CBB assay to evaluate possible method-dependent differences with PRM in urinary protein (UP) determination, and to assess the influence of such differences in substaging according to the International Renal Interest Society (IRIS). METHODS Urine was collected from healthy and proteinuric dogs. Intra-assay and inter-assay repeatability (imprecision), linearity under dilution (LUD), and spiking recovery (inaccuracy) were determined for the CBB assay. Split samples were measured with PRM and CBB, and agreement between methods and concordance in classification according to IRIS guidelines was determined. RESULTS The CBB assay was precise (< 10%) at all urine protein concentrations after excluding outliers from the intra-assay precision assay of high urine protein concentrations. Acceptable accuracy was demonstrated with both LUD and spiking recovery test. Both UP and UPC determined by CBB were significantly higher (P < .0001) than those obtained with PRM, and both a constant and proportional bias were present. Concordance of IRIS substaging was only moderate. CONCLUSIONS The CBB is precise and accurate, but the higher UPC obtained with CBB vs PRM may affect interpretation of the IRIS guidelines.
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Affiliation(s)
- Gabriele Rossi
- Department of Veterinary Sciences and Public Health, University of Milan, Milan, Italy.
| | - Walter Bertazzolo
- Veterinary Animal Hospital "Città di Pavia", Pavia, Italy.,Veterinary Laboratory "La Vallonea", Alessano (LE), Italy
| | - Monica Binnella
- Department of Veterinary Sciences and Public Health, University of Milan, Milan, Italy
| | - Paola Scarpa
- Department of Veterinary Sciences and Public Health, University of Milan, Milan, Italy
| | - Saverio Paltrinieri
- Department of Veterinary Sciences and Public Health, University of Milan, Milan, Italy
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Cianciolo R, Hokamp J, Nabity M. Advances in the evaluation of canine renal disease. Vet J 2016; 215:21-9. [PMID: 27198066 DOI: 10.1016/j.tvjl.2016.04.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 04/05/2016] [Accepted: 04/23/2016] [Indexed: 01/11/2023]
Abstract
Many recent advances in the evaluation of dogs with kidney disease have improved our diagnostic algorithms and have impacted our therapeutic strategies. Non-invasive techniques, such as urinary and serologic biomarker evaluation, can help a clinician diagnose and treat a patient that cannot undergo a renal biopsy for clinical or financial reasons. Some biomarkers might help localize the affected structure (glomerulus vs. tubule) and indicate the type or severity of injury present. Although more research is needed, studies indicate that some biomarkers (e.g. urine protein to creatinine ratio and urinary immunoglobulins) can be useful in predicting adverse outcomes. Importantly, the sensitivity and specificity of biomarkers for renal injury should be established and clinicians need to understand the limitations of these assays. If a renal biopsy is performed, then it should be evaluated by a specialty diagnostic service with expertise in nephropathology. A panel of special stains, immunofluorescence for the detection of immunoglobulins and complement factors, and transmission electron microscopy can be routinely employed in cases of glomerular disease. These advanced diagnostics can be used to detect immune deposits in order to definitively diagnose immune complex mediated glomerular disease. Integrating the results of biomarker assays and comprehensive renal biopsy evaluation, the clinician can make informed therapeutic decisions, such as whether or not to immunosuppress a patient.
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Affiliation(s)
- Rachel Cianciolo
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210, USA.
| | - Jessica Hokamp
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, College Station, TX, USA
| | - Mary Nabity
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, College Station, TX, USA
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Affiliation(s)
- Jessica A. Hokamp
- Department of Veterinary Pathobiology; College of Veterinary Medicine and Biomedical Sciences; Texas A&M University; College Station TX USA
| | - Mary B. Nabity
- Department of Veterinary Pathobiology; College of Veterinary Medicine and Biomedical Sciences; Texas A&M University; College Station TX USA
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