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Zhu D, Wang M, Zhang Z, Liu M, Liu Y, Wu W, Lu D, Wu X, Wu W, Wang X. A metabolomic-based biomarker discovery study for predicting phototherapy duration for neonatal hyperbilirubinemia. Transl Pediatr 2022; 11:2016-2029. [PMID: 36643669 PMCID: PMC9834951 DOI: 10.21037/tp-22-637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Phototherapy is a recommended method for the treatment of neonatal hyperbilirubinemia. However, biomarkers for predicting the more effective duration of phototherapy prior to treatment are lacking. Therefore, we aimed to determine novel predictors for the timing of phototherapy from the perspective of metabolomics. METHODS A total of 12 newborns with neonatal hyperbilirubinemia were recruited on the day of admission. The infants were divided into a short-duration (<30 hours) phototherapy group and a long-duration (≥30 hours) phototherapy group based on the length of phototherapy treatment. Metabolites in serum samples were then explored using an untargeted metabolomics strategy. RESULTS In total, 59 of 1,073 significantly different metabolites were identified between the short-duration and long-duration phototherapy groups, including 18 upregulated and 41 downregulated metabolites. The results of metabolomic analysis showed that the differentially expressed metabolites were enriched in glycerophospholipid metabolism, which is closely associated with the excretion of bilirubin. Moreover, the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis revealed that the metabolites were also enriched in alpha-Linolenic acid metabolism and fatty acid elongation. Spearman correlation hierarchical clustering analysis demonstrated that 9 metabolites were negatively correlated with the duration of phototherapy. Metabolites, especially phosphatidylethanolamine (PE) (22:1(13Z)/15:0), phosphatidylcholine (PC) (18:1(9Z)/18:1(9Z)), phosphatidylserine (PS) (22:0/15:0), 5,6-dihydrouridine, and PE (MonoMe(11,3)/MonoMe(13,5)), had better predictability for the duration of phototherapy [area under curve (AUC): 1; 95% confidence interval (CI): 1-1] than total serum total bilirubin and direct bilirubin (AUC: 0.806; 95% CI: 0.55-1), as revealed by receiver operating characteristic analysis. CONCLUSIONS Our research found that the differential metabolites were associated with the duration of neonatal jaundice and that glycerophospholipid metabolism might have played a role in this biological process. Moreover, metabolites such as PE (22:1(13Z)/15:0), PC (18:1(9Z)/18:1(9Z)), PS (22:0/15:0), 5,6-dihydrouridine, and PE (MonoMe(11,3)/MonoMe(13,5)) could be used as predictors for phototherapy duration in neonatal hyperbilirubinemia and assist with decision-making.
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Affiliation(s)
- Danying Zhu
- Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Respiratory Medicine, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Mingjie Wang
- Department of Pediatrics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zhongxiao Zhang
- Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Minghua Liu
- Department of Pediatrics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yiwen Liu
- Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weiling Wu
- Department of Pediatrics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Dian Lu
- Department of Pediatrics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaoyun Wu
- Department of Pediatrics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wei Wu
- Department of Pediatrics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xingyun Wang
- Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Čepa A, Dejmková V, Lešetický L, Jelínek I, Smrček S, Štícha M, Jašprová J, Urbanová M, Goncharova I, Dračínský M, Procházková E, Ostrow DJ, Vítek L. Physico-chemical characterization of bilirubin-10-sulfonate and comparison of its acid-base behavior with unconjugated bilirubin. Sci Rep 2021; 11:12896. [PMID: 34145377 PMCID: PMC8213708 DOI: 10.1038/s41598-021-92377-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 06/09/2021] [Indexed: 11/10/2022] Open
Abstract
Unconjugated bilirubin (UCB) is the end-product of heme catabolism in the intravascular compartment. Although beneficial for human health when mildly elevated in the body, when present at greater than a critical threshold concentration, UCB exerts toxic effects that are related to its physico-chemical properties, particularly affecting the central nervous system. The aim of the present study was to characterize bilirubin-10-sulfonate (ranarubin), a naturally occurring bile pigment, including determination of its mixed acidity constants (pKa*). Thanks to the presence of the sulfonic acid moiety, this compound is more polar compared to UCB, which might theoretically solve the problem with an accurate determination of the UCB pKa* values of its propionic acid carboxylic groups. Bilirubin-10-sulfonate was synthesized by modification of a previously described procedure; and its properties were studied by mass spectrometry (MS), nuclear magnetic resonance (NMR), infrared (IR), and circular dichroism (CD) spectroscopy. Determination of pKa* values of bilirubin-10-sulfonate and UCB was performed by capillary electrophoresis with low pigment concentrations in polar buffers. The identity of the synthesized bilirubin-10-sulfonate was confirmed by MS, and the pigment was further characterized by NMR, IR, and CD spectroscopy. The pKa values of carboxylic acid moieties of bilirubin-10-sulfonate were determined to be 5.02, whereas those of UCB were determined to be 9.01. The physico-chemical properties of bilirubin-10-sulfonate were partially characterized with low pKa* values compared to those of UCB, indicating that bilirubin-10-sulfonate cannot be used as a surrogate pigment for UCB chemical studies. In addition, using a different methodological approach, the pKa* values of UCB were found to be in a mildly alkaline region, confirming the conclusions of a recent critical re-evaluation of this specific issue.
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Affiliation(s)
- Adam Čepa
- Department of Organic Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Veronika Dejmková
- Department of Organic Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Ladislav Lešetický
- Department of Organic Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Ivan Jelínek
- Department of Organic Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Stanislav Smrček
- Department of Organic Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Martin Štícha
- Department of Organic Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Jana Jašprová
- Institute of Medical Biochemistry and Laboratory Diagnostics, 1st Faculty of Medicine, Charles University, Na Bojišti 3, Praha 2, 12000, Czech Republic
| | - Marie Urbanová
- University of Chemistry and Technology, Prague, Czech Republic
| | | | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Eliška Procházková
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Donald J Ostrow
- GI/Hepatology Division, University of Washington School of Medicine, Seattle, WA, USA
| | - Libor Vítek
- Institute of Medical Biochemistry and Laboratory Diagnostics, 1st Faculty of Medicine, Charles University, Na Bojišti 3, Praha 2, 12000, Czech Republic. .,4th Department of Internal Medicine, 1st Faculty of Medicine, Charles University, Prague, Czech Republic.
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Role of osteopontin in diet-induced brown gallstone formation in rats. Chin Med J (Engl) 2021; 134:1093-1100. [PMID: 33883409 PMCID: PMC8116003 DOI: 10.1097/cm9.0000000000001519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Background: Although osteopontin (OPN) is expressed in the liver and pigment gallstones of patients with hepatolithiasis, its role in pigment gallstone formation remains unclear. This study aimed to explore the function of OPN in pigment gallstone formation. Methods: Rats were fed a chow diet (CD) or lithogenic diet (LD) for 10 consecutive weeks; blocking tests were then performed using an OPN antibody (OPN-Ab). Incidence of gallstones and levels of several bile components, OPN, tumor necrosis factor alpha (TNF-α), and cholesterol 7 alpha-hydroxylase (CYP7A1) were analyzed. To determine TNF-α expression in hepatic macrophages and both CYP7A1 and bile acid (BA) expression in liver cells, recombinant rat OPN and recombinant rat TNF-α were used to treat rat hepatic macrophages and rat liver cells, respectively. Chi-square or Fisher exact tests were used to analyze qualitative data, Student t-test or one-way analysis of variance were used to analyze qualitative data. Results: Incidence of gallstones was higher in LD-fed rats than in CD-fed rats (80% vs. 10%, P < 0.05). BA content significantly decreased in bile (t = −36.08, P < 0.01) and liver tissue (t = −16.16, P < 0.01) of LD-fed rats. Both hepatic OPN protein expression (t = 9.78, P < 0.01) and TNF-α level (t = 8.83, P < 0.01) distinctly increased in the LD group; what's more, CYP7A1 mRNA and protein levels (t = −12.35, P < 0.01) were markedly down-regulated in the LD group. Following OPN-Ab pretreatment, gallstone formation decreased (85% vs. 25%, χ2 = 14.55, P < 0.01), liver TNF-α expression (F = 20.36, P < 0.01) was down-regulated in the LD group, and CYP7A1 expression (F = 17.51, P < 0.01) was up-regulated. Through CD44 and integrin receptors, OPN promoted TNF-α production in macrophage (F = 1041, P < 0.01), which suppressed CYP7A1 expression (F = 48.08, P < 0.01) and reduced liver BA synthesis (F = 119.4, P < 0.01). Conclusions: We provide novel evidence of OPN involvement in pigmented gallstone pathogenesis in rats.
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Anti-inflammatory and hepatoprotective effects of polyherbal composition in patients with chronic cholecystitis. UKRAINIAN BIOCHEMICAL JOURNAL 2020. [DOI: 10.15407/ubj92.04.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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Tanaka H, Imasato M, Yamazaki Y, Matsumoto K, Kunimoto K, Delpierre J, Meyer K, Zerial M, Kitamura N, Watanabe M, Tamura A, Tsukita S. Claudin-3 regulates bile canalicular paracellular barrier and cholesterol gallstone core formation in mice. J Hepatol 2018; 69:1308-1316. [PMID: 30213590 DOI: 10.1016/j.jhep.2018.08.025] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 08/24/2018] [Accepted: 08/28/2018] [Indexed: 01/05/2023]
Abstract
BACKGROUND & AIMS Most cholesterol gallstones have a core consisting of inorganic and/or organic calcium salts, although the mechanisms of core formation are poorly understood. We examined whether the paracellular permeability of ions at hepatic tight junctions is involved in the core formation of cholesterol gallstones, with particular interest in the role of phosphate ion, a common food additive and preservative. METHODS We focused on claudin-3 (Cldn3), a paracellular barrier-forming tight junction protein whose expression in mouse liver decreases with age. Since Cldn3-knockout mice exhibited gallstone diseases, we used them to assess the causal relationship between paracellular phosphate ion permeability and the core formation of cholesterol gallstones. RESULTS In the liver of Cldn3-knockout mice, the paracellular phosphate ion permeability through hepatic tight junctions was significantly increased, resulting in calcium phosphate core formation. Cholesterol overdose caused cholesterol gallstone disease in these mice. CONCLUSION We revealed that in the hepatobiliary system, Cldn3 functions as a paracellular barrier for phosphate ions, to help maintain biliary ion homeostasis. We provide in vivo evidence that elevated phosphate ion concentrations play a major role in the lifestyle- and age-related risks of developing cholesterol gallstone disease under cholesterol overdose. LAY SUMMARY Herein, we reveal a new mechanism for cholesterol gallstone formation, in which increased paracellular phosphate ion permeability across hepatobiliary epithelia causes calcium phosphate core formation and cholesterol gallstones. Thus, altered phosphate ion metabolism under cholesterol overdose plays a major role in the lifestyle- and age-related risks of developing cholesterol gallstone disease.
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Affiliation(s)
- Hiroo Tanaka
- Laboratory of Biological Science, Graduate School of Frontier Biosciences and Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Mitsunobu Imasato
- Laboratory of Biological Science, Graduate School of Frontier Biosciences and Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Yuji Yamazaki
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Kengo Matsumoto
- Laboratory of Biological Science, Graduate School of Frontier Biosciences and Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Koshi Kunimoto
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Julien Delpierre
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Kirstin Meyer
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Marino Zerial
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany; Center for Advancing Electronics Dresden, Technische Universitat Dresden, Dresden, Germany
| | - Naho Kitamura
- Graduate School of Media and Governance, Faculty of Environment Information Studies, Keio University, Kanagawa, Japan
| | - Mitsuhiro Watanabe
- Graduate School of Media and Governance, Faculty of Environment Information Studies, Keio University, Kanagawa, Japan; Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Atsushi Tamura
- Laboratory of Biological Science, Graduate School of Frontier Biosciences and Graduate School of Medicine, Osaka University, Osaka, Japan.
| | - Sachiko Tsukita
- Laboratory of Biological Science, Graduate School of Frontier Biosciences and Graduate School of Medicine, Osaka University, Osaka, Japan.
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Xu G, Li Y, Jiang X, Chen H. CAV1 Prevents Gallbladder Cholesterol Crystallization by Regulating Biosynthesis and Transport of Bile Salts. J Cell Biochem 2016; 117:2118-27. [PMID: 26875794 DOI: 10.1002/jcb.25518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 02/11/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Guoqiang Xu
- Department of Gastroenterology; Zhejiang University School of Medicine; The First Affiliated Hospital; Hangzhou Zhejiang 310003 China
| | - Yiqiao Li
- Department of Nephrology; Zhejiang Province People's Hospital; Hangzhou Zhejiang 310014 China
| | - Xin Jiang
- Department of Pathology and Pathophysiology; Zhejiang University School of Medicine; Hangzhou Zhejiang 310058 China
| | - Hongtan Chen
- Department of Gastroenterology; Zhejiang University School of Medicine; The First Affiliated Hospital; Hangzhou Zhejiang 310003 China
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Roles of Sphincter of Oddi Laxity in Bile Duct Microenvironment in Patients with Cholangiolithiasis: From the Perspective of the Microbiome and Metabolome. J Am Coll Surg 2015; 222:269-280.e10. [PMID: 26922601 DOI: 10.1016/j.jamcollsurg.2015.12.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 12/02/2015] [Accepted: 12/02/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Bile duct microenvironment plays several key roles in cholangiolithiasis occurrence. Sphincter of Oddi laxity (SOL) is associated with cholangiolithiasis, probably due to enhanced reflux of intestinal contents that changes the microenvironment. However, the microenvironment has not been investigated comprehensively. STUDY DESIGN Patients with cholangiolithiasis were consecutively recruited and their bile was collected intraoperatively for high-throughput experiments. Pyrosequencing of 16S ribosomal RNA gene was performed to characterize the microbiota in the bile. A liquid chromatography mass spectrometry-based method was used to profile bile composition. Clinical manifestation, microbiome, and bile composition were compared between patients with and without SOL. RESULTS Eighteen patients with SOL and 27 patients without SOL were finally included. Patients with SOL showed more severe inflammation. Bacteria in the bile duct were overwhelmingly aerobes and facultative anaerobes. Proteobacteria and Firmicutes were the most widespread phylotypes, especially Enterobacteriaceae. Compared with those without SOL, patients with SOL possessed more varied microbiota. In the SOL group, pathobionts, such as Bilophila and Shewanella algae had richer communities, and harmless bacteria were reduced. Metabolomics analysis showed the differences in bile composition between groups were mainly distributed in lipids and bile acids. Particularly, the increased abundance of Bilophila involved in taurine metabolism was associated with reduced contents of taurine derivatives in the bile of patients with SOL. CONCLUSIONS A bile duct microenvironment with more severe bacterial infection and stronger lithogenicity was found in patients with SOL. The findings suggest a possible mechanism of cholangiolithiasis and provide the basis for future strategies for prevention of cholangiolithiasis recurrence.
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Neubrand MW, Carey MC, Laue TM. Influence of Phosphatidylcholine and Calcium on Self-Association and Bile Salt Mixed Micellar Binding of the Natural Bile Pigment, Bilirubin Ditaurate. Biochemistry 2015; 54:6783-95. [DOI: 10.1021/acs.biochem.5b00874] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Michael W. Neubrand
- Department of Medicine, Harvard
Medical School, and Division of Gastroenterology, Brigham and Women’s Hospital and Harvard Digestive Disease Center, Boston, Massachusetts 02115, United States
| | - Martin C. Carey
- Department of Medicine, Harvard
Medical School, and Division of Gastroenterology, Brigham and Women’s Hospital and Harvard Digestive Disease Center, Boston, Massachusetts 02115, United States
| | - Thomas M. Laue
- Department of Biochemistry, University of New Hampshire, Durham, New Hampshire 03824, United States
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