Measuring serum total and free indoxyl sulfate and p-cresyl sulfate in chronic kidney disease using UPLC-MS/MS

Publication date: Available online 4 December 2018Source: Journal of Food and Drug AnalysisAuthor(s): Chia-Ni Lin, I-Wen Wu, Yun-Fen Huang, Shu-Yu Peng, Ya-Ching Huang, Hsiao-Chen NingAbstractChronic kidney disease (CKD) is a complex disorder that affects multiple organs and increases the risk of cardiovascular complications. CKD affects approximately 12% of the population in Taiwan. Loss of kidney function leads to accumulation of potentially toxic compounds such as indoxyl sulfate (IS) and p-cresyl sulfate (pCS), two protein-bound uremic solutes that can stimulate the progression of CKD. The aim of this study was to assess whether IS and pCS levels were correlated with CKD stage. We developed and validated a method for quantitating total and free IS and pCS in serum by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Serum samples were pretreated using protein precipitation with acetonitrile containing stable isotope-labeled IS and pCS as internal standards. After centrifugation, the supernatant was diluted and injected into a UPLC-MS/MS system. Analyte concentrations were calculated from the calibration curve and ion ratios between the analyte and the internal standard. The calibration curves were linear with a correlation coefficient of>0.999; the analytical measurement range was 0.05–5 mg/L. The limit of quantitation of this assay was 0.05 mg/L for both analytes. The reference interval was ≤0.05–1.15 mg/L for...
Source: Journal of Food and Drug Analysis - Category: Food Science Source Type: research

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In conclusion, we describe one novel mutation, c.1015delG, and a common mutation, c.815_816insGA, of the AGXT gene among four unrelated families with PH1. Moreover, we suggest that the short repeat of the GA dinucleotide may represent a mutation hotspot in the Chinese population. PMID: 30541997 [PubMed - in process]
Source: The Tohoku Journal of Experimental Medicine - Category: Research Authors: Tags: Tohoku J Exp Med Source Type: research
In conclusion, both RH and RfH constitute challenges in clinical practice and should be addressed as distinct clinical entities by trained professionals who are capable to identify comorbidities and provide specific, diversified, and individualized treatment. PMID: 30525180 [PubMed - as supplied by publisher]
Source: Jornal Brasileiro de Nefrologia - Category: Urology & Nephrology Tags: J Bras Nefrol Source Type: research
Authors: Barreto FC, Costa CRVD, Reis LMD, Custódio MR Abstract Renal osteodystrophy (ROD), a group of metabolic bone diseases secondary to chronic kidney disease (CKD), still represents a great challenge to nephrologists. Its management is tailored by the type of bone lesion - of high or low turnover - that cannot be accurately predicted by serum biomarkers of bone remodeling available in daily clinical practice, mainly parathyroid hormone (PTH) and alkaline phosphatase (AP). In view of this limitation, bone biopsy followed by bone quantitative histomorphometry, the gold-standard method for the diagnosis of...
Source: Jornal Brasileiro de Nefrologia - Category: Urology & Nephrology Tags: J Bras Nefrol Source Type: research
Publication date: Available online 14 December 2018Source: Nutrition, Metabolism and Cardiovascular DiseasesAuthor(s): Leonardo Spatola, Elena Dozio
Source: Nutrition, Metabolism and Cardiovascular Diseases - Category: Nutrition Source Type: research
ConclusionsMönckeberg medial calcinosis is an incidental finding on panoramic or CBCT imaging. Clinically and radiographically, its importance for the clinician is its strong association with diabetes and chronic kidney disease. The significance of Mönckeberg sclerosis of the infraorbital arteries is unknown. Radiologists and clinicians should be aware of this entity and the importance of documentation of any findings.
Source: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology - Category: ENT & OMF Source Type: research
Authors: González Sanchidrián S, Labrador Gómez PJ, Aguilar Aguilar JC, Davin Carrero E, Gallego Domínguez S, Gómez-Martino Arroyo JR PMID: 30545713 [PubMed - as supplied by publisher]
Source: Nefrologia : publicacion oficial de la Sociedad Espanola Nefrologia - Category: Urology & Nephrology Tags: Nefrologia Source Type: research
In 1903, the German pathologist Johann M önckeberg described calcifications only affecting the tunica media of medium arteries. The entity was named Mönckeberg arteriosclerosis. Other names in the literature are Mönckeberg sclerosis and Mönckeberg medial calcinosis. The entity is strongly associated with chronic kidney disease and diab etes mellitus. Radiographically, medial calcinosis presents as areas of linear calcifications in soft tissue. The linear calcifications are described as “tram track,” “pipe stem,” “rail track,” or “tram line” when viewed longitudinally.
Source: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics - Category: ENT & OMF Authors: Source Type: research
In conclusion, RSV could alleviate renal damage in obese mice induced by high-fat dietvia suppressing inflammation and oxidative stress.
Source: Inflammation - Category: Allergy & Immunology Source Type: research
Publication date: Available online 13 December 2018Source: The Lancet HIVAuthor(s): Joseph J Eron, Jean-Daniel Lelievre, Robert Kalayjian, Jihad Slim, Anson K Wurapa, Jeffrey L Stephens, Cheryl McDonald, Eric Cua, Aimee Wilkin, Brigitte Schmied, Mehri McKellar, Stephanie Cox, Sophia R Majeed, Shuping Jiang, Andrew Cheng, Moupali Das, Devi SenGuptaSummaryBackgroundCurrent treatment for HIV-infected individuals with renal failure on haemodialysis frequently requires complex regimens with multiple pills. A daily single-tablet regimen of coformulated elvitegravir, cobicistat, emtricitabine, and tenofovir alafenamide is approve...
Source: The Lancet HIV - Category: Infectious Diseases Source Type: research
Authors: Zhang Y, Wang Y, Tao XJ, Li Q, Li FF, Lee KO, Li DM, Ma JH Abstract Purpose: To determine if the TSH is related to estimated glomerular filtration rate (eGFR) in T2D patients without overt thyroid dysfunction. Methods: A cohort study of 5936 T2D patients was assessed for thyroid and kidney functions, in whom 248 with subclinical hyperthyroidism and 362 with subclinical hypothyroidism. Serum creatinine and 24-hour urine albumin excretion (UAE) were collected. Chronic kidney disease (CKD) was defined as eGFR 
Source: International Journal of Endocrinology - Category: Endocrinology Tags: Int J Endocrinol Source Type: research
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