Chien-Hsing Wu1, Chih-Chao Yang2, Hsueh-Wen Chang3, Bin Huang4,5, Chung-Jen Chen6, Eton I-Cheng Lin7, Chien-Yi Wu8, Yueh-Hua Chung9, Yu-Han Hsu10, Chien-Te Lee2, Feng-Rong Chuang2. 1. Division of Nephrology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan, vjf3@adm.cgmh.org.tw. 2. Division of Nephrology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan. 3. Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan. 4. Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung, Taiwan. 5. Center for Stem Cell Research, Kaohsiung Medical University, Kaohsiung, Taiwan. 6. Division of General Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan. 7. Department of Clinical Immunology and Allergy, The Royal Melbourne Hospital, Melbourne, Victoria, Australia. 8. Department of Pediatrics, E-DA Hospital, I-Shou University, Kaohsiung, Taiwan. 9. Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan. 10. Department of Pharmacy, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
Abstract
OBJECTIVE: Recent studies have reported that reduced excretion of urinary uromodulin is associated with renal tubular function and risks of progressive kidney disease. Gouty nephropathy is usually seen in patients with gout. Patients with chronic gouty nephropathy are characterized by the deposition of monosodium urate crystals primarily involving the collecting ducts in the medulla. We postulated that this correlation may be specific to gout and may serve as a useful biomarker for chronic kidney disease (CKD). MATERIALS AND METHODS: A total of 114 Taiwanese patients diagnosed with gout (n = 72), CKD (n = 26), or healthy volunteers (n = 16) were prospectively enrolled for this study from the Rheumatology and Nephrology Outpatient Clinics of our institution. We obtained urine and blood samples on patient visits to the outpatient clinics. Demographic data were obtained from medical records. RESULTS: In patients with gout, the spot urinary uromodulin/creatinine ratio (uUMCR; mg/g) in patients with CKD was significantly lower than that in those without CKD (CKD group: 2.2; non-CKD group: 5.6, p = 0.005). Multivariate analysis revealed that patients with CKD and gout had a lower uUMCR than those with gout alone (p = 0.028). A significant association was not observed in our non-gout cohort. CONCLUSION: The association of decreased uUMCR with CKD status was identified only in patients with gout in the present study. We believe that uUMCR might serve as an indicator of differential CKD in patients with gout.
OBJECTIVE: Recent studies have reported that reduced excretion of urinary uromodulin is associated with renal tubular function and risks of progressive kidney disease. Gouty nephropathy is usually seen in patients with gout. Patients with chronic gouty nephropathy are characterized by the deposition of monosodium urate crystals primarily involving the collecting ducts in the medulla. We postulated that this correlation may be specific to gout and may serve as a useful biomarker for chronic kidney disease (CKD). MATERIALS AND METHODS: A total of 114 Taiwanese patients diagnosed with gout (n = 72), CKD (n = 26), or healthy volunteers (n = 16) were prospectively enrolled for this study from the Rheumatology and NephrologyOutpatient Clinics of our institution. We obtained urine and blood samples on patient visits to the outpatient clinics. Demographic data were obtained from medical records. RESULTS: In patients with gout, the spot urinary uromodulin/creatinine ratio (uUMCR; mg/g) in patients with CKD was significantly lower than that in those without CKD (CKD group: 2.2; non-CKD group: 5.6, p = 0.005). Multivariate analysis revealed that patients with CKD and gout had a lower uUMCR than those with gout alone (p = 0.028). A significant association was not observed in our non-gout cohort. CONCLUSION: The association of decreased uUMCR with CKD status was identified only in patients with gout in the present study. We believe that uUMCR might serve as an indicator of differential CKD in patients with gout.
Authors: Anna Köttgen; Cristian Pattaro; Carsten A Böger; Christian Fuchsberger; Matthias Olden; Nicole L Glazer; Afshin Parsa; Xiaoyi Gao; Qiong Yang; Albert V Smith; Jeffrey R O'Connell; Man Li; Helena Schmidt; Toshiko Tanaka; Aaron Isaacs; Shamika Ketkar; Shih-Jen Hwang; Andrew D Johnson; Abbas Dehghan; Alexander Teumer; Guillaume Paré; Elizabeth J Atkinson; Tanja Zeller; Kurt Lohman; Marilyn C Cornelis; Nicole M Probst-Hensch; Florian Kronenberg; Anke Tönjes; Caroline Hayward; Thor Aspelund; Gudny Eiriksdottir; Lenore J Launer; Tamara B Harris; Evadnie Rampersaud; Braxton D Mitchell; Dan E Arking; Eric Boerwinkle; Maksim Struchalin; Margherita Cavalieri; Andrew Singleton; Francesco Giallauria; Jeffrey Metter; Ian H de Boer; Talin Haritunians; Thomas Lumley; David Siscovick; Bruce M Psaty; M Carola Zillikens; Ben A Oostra; Mary Feitosa; Michael Province; Mariza de Andrade; Stephen T Turner; Arne Schillert; Andreas Ziegler; Philipp S Wild; Renate B Schnabel; Sandra Wilde; Thomas F Munzel; Tennille S Leak; Thomas Illig; Norman Klopp; Christa Meisinger; H-Erich Wichmann; Wolfgang Koenig; Lina Zgaga; Tatijana Zemunik; Ivana Kolcic; Cosetta Minelli; Frank B Hu; Asa Johansson; Wilmar Igl; Ghazal Zaboli; Sarah H Wild; Alan F Wright; Harry Campbell; David Ellinghaus; Stefan Schreiber; Yurii S Aulchenko; Janine F Felix; Fernando Rivadeneira; Andre G Uitterlinden; Albert Hofman; Medea Imboden; Dorothea Nitsch; Anita Brandstätter; Barbara Kollerits; Lyudmyla Kedenko; Reedik Mägi; Michael Stumvoll; Peter Kovacs; Mladen Boban; Susan Campbell; Karlhans Endlich; Henry Völzke; Heyo K Kroemer; Matthias Nauck; Uwe Völker; Ozren Polasek; Veronique Vitart; Sunita Badola; Alexander N Parker; Paul M Ridker; Sharon L R Kardia; Stefan Blankenberg; Yongmei Liu; Gary C Curhan; Andre Franke; Thierry Rochat; Bernhard Paulweber; Inga Prokopenko; Wei Wang; Vilmundur Gudnason; Alan R Shuldiner; Josef Coresh; Reinhold Schmidt; Luigi Ferrucci; Michael G Shlipak; Cornelia M van Duijn; Ingrid Borecki; Bernhard K Krämer; Igor Rudan; Ulf Gyllensten; James F Wilson; Jacqueline C Witteman; Peter P Pramstaller; Rainer Rettig; Nick Hastie; Daniel I Chasman; W H Kao; Iris M Heid; Caroline S Fox Journal: Nat Genet Date: 2010-04-11 Impact factor: 38.330
Authors: Pranav S Garimella; Mary L Biggs; Ronit Katz; Joachim H Ix; Michael R Bennett; Prasad Devarajan; Bryan R Kestenbaum; David S Siscovick; Majken K Jensen; Michael G Shlipak; Paulo H M Chaves; Mark J Sarnak Journal: Kidney Int Date: 2015-07-08 Impact factor: 10.612