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Pham AHN, Thi KOB, Thi MHN, Ngo DN, Naritaka N, Nittono H, Hayashi H, Dao TT, Nguyen KHT, Nguyen HN, Giang H, Tang HS, Nguyen TT, Truong DK, Tran MD. Clinical and genetic features of congenital bile acid synthesis defect with a novel mutation in AKR1D1 gene sequencing: Case reports. Medicine (Baltimore) 2022; 101:e29476. [PMID: 35758383 PMCID: PMC9276355 DOI: 10.1097/md.0000000000029476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 04/29/2022] [Indexed: 11/26/2022] Open
Abstract
RATIONALE Congenital bile acid synthesis defect (BASD) is a rare disease caused by mutations in the aldo-keto reductase 1D1 gene, which encodes the primary Δ4-3-oxosteroid 5β-reductase enzyme. Early disease diagnosis is critical for early treatment with bile acid replacement therapy, with an excellent chance for recovery. In contrast, protracted diagnosis and treatment may lead to poor outcomes, including decompensated hepatic cirrhosis, liver transplant, and even death. PATIENT CONCERNS Three clinical congenital bile acid synthesis defect cases in the Vietnamese population are herein reported. These pediatric patients presented with symptoms of prolonged postpartum jaundice and abnormal loose stool (mucus, lipids, and white). The clinical examinations showed hepatosplenomegaly. Urinalysis showed a very low fraction of primary bile acids and atypical 3-oxo-Δ4- bile acids in all three patients. DIAGNOSES The patients were diagnosed with primary Δ4-3-oxosteroid 5β-reductase deficiency. Next-generation gene sequencing revealed two homozygous mutations in the aldo-keto reductase family 1 member D1 gene. The first is a documented variant, c.797G>A (p.Arg266Gln), and the second is a novel mutation at c.155T>C (p.Ile52Thr). INTERVENTIONS Immediately after diagnosis, patients were treated with oral chenodeoxycholate 5 mg/kg/d. OUTCOMES The patients' symptoms, signs, and primary bile acids levels improved significantly. LESSONS Clinicians should consider genetic disorders related to cholestasis for effective and life-saving treatment. A prompt genetic analysis by next-generation gene sequencing enables patients to access bile acid replacement therapy earlier, significantly improving short- and long-term outcomes.
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Affiliation(s)
| | - Kim-Oanh Bui Thi
- Hepatology Department, National Children's Hospital, Hanoi, Vietnam
| | | | - Diem-Ngoc Ngo
- Human Genetics Department, National Children's Hospital, Hanoi, Vietnam
| | | | - Hiroshi Nittono
- Laboratory of Molecular Pharmacokinetics, Graduate School of Pharmaceutical Sciences, University of Tokyo, Tokyo, Japan
| | - Hisamitsu Hayashi
- Laboratory of Molecular Pharmacokinetics, Graduate School of Pharmaceutical Sciences, University of Tokyo, Tokyo, Japan
| | - Trang Thi Dao
- Gene Solutions, Ho Chi Minh City, Vietnam
- Medical Genetics Institutes, Ho Chi Minh City, Vietnam
| | - Kim-Huong Thi Nguyen
- Gene Solutions, Ho Chi Minh City, Vietnam
- Medical Genetics Institutes, Ho Chi Minh City, Vietnam
| | - Hoai-Nghia Nguyen
- Medical Genetics Institutes, Ho Chi Minh City, Vietnam
- University of Medicine and Pharmacy at Ho Chi Minh City, Vietnam
| | - Hoa Giang
- Gene Solutions, Ho Chi Minh City, Vietnam
- Medical Genetics Institutes, Ho Chi Minh City, Vietnam
| | - Hung-Sang Tang
- Gene Solutions, Ho Chi Minh City, Vietnam
- Medical Genetics Institutes, Ho Chi Minh City, Vietnam
| | - Tat-Thanh Nguyen
- Gene Solutions, Ho Chi Minh City, Vietnam
- Medical Genetics Institutes, Ho Chi Minh City, Vietnam
| | | | - Minh-Dien Tran
- Hepatology Department, National Children's Hospital, Hanoi, Vietnam
- Human Genetics Department, National Children's Hospital, Hanoi, Vietnam
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Zhao J, Setchell KDR, Gong Y, Sun Y, Zhang P, Heubi JE, Fang L, Lu Y, Xie X, Gong J, Wang JS. Genetic spectrum and clinical characteristics of 3β-hydroxy-Δ 5-C 27-steroid oxidoreductase (HSD3B7) deficiency in China. Orphanet J Rare Dis 2021; 16:417. [PMID: 34627351 PMCID: PMC8501698 DOI: 10.1186/s13023-021-02041-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 09/19/2021] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Biallelic variants in HSD3B7 cause 3β-hydroxy-Δ5-C27-steroid oxidoreductase (HSD3B7) deficiency, a life-threatening but treatable liver disease. The goal of this study was to obtain detailed information on the correlation between the genotype and phenotype of HSD3B7 deficiency and to report on responses to primary bile acid therapy. METHODS The medical records of a cohort of 39 unrelated patients with genetically and biochemically confirmed HSD3B7 deficiency were examined to determine whether there exist genotype-phenotype relationships in this bile acid synthesis disorder. RESULTS In all, 34 of the 44 variants identified in HSD3B7 were novel. A total of 32 patients presented early with neonatal cholestasis, and 7 presented after 1-year of age with liver failure (n = 1), liver cirrhosis (n = 3), cholestasis (n = 1), renal cysts and abnormal liver biochemistries (n = 1), and coagulopathy from vitamin K1 deficiency and abnormal liver biochemistries (n = 1). Renal lesions, including renal cysts, renal stones, calcium deposition and renal enlargement were observed in 10 of 35 patients. Thirty-three patients were treated with oral chenodeoxycholic acid (CDCA) resulting in normalization of liver biochemistries in 24, while 2 showed a significant clinical improvement, and 7 underwent liver transplantation or died. Remarkably, renal lesions in 6 patients resolved after CDCA treatment, or liver transplantation. There were no significant correlations between genotype and clinical outcomes. CONCLUSIONS In what is the largest cohort of patients with HSD3B7 deficiency thus far studied, renal lesions were a notable clinical feature of HSD3B7 deficiency and these were resolved with suppression of atypical bile acids by oral CDCA administration.
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Affiliation(s)
- Jing Zhao
- The Center for Pediatric Liver Diseases, Children's Hospital of Fudan University, 399 Wanyuan Road, Minhang District, Shanghai, 201102, China
| | - Kenneth D R Setchell
- Department of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Ying Gong
- Department of Radiology, Children's Hospital of Fudan University, Shanghai, China
| | - Yinghua Sun
- Department of Ultrasonography, Children's Hospital of Fudan University, Shanghai, China
| | - Ping Zhang
- Center for Molecular Medicine, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - James E Heubi
- Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Lingjuan Fang
- The Center for Pediatric Liver Diseases, Children's Hospital of Fudan University, 399 Wanyuan Road, Minhang District, Shanghai, 201102, China
| | - Yi Lu
- The Center for Pediatric Liver Diseases, Children's Hospital of Fudan University, 399 Wanyuan Road, Minhang District, Shanghai, 201102, China
| | - Xinbao Xie
- The Center for Pediatric Liver Diseases, Children's Hospital of Fudan University, 399 Wanyuan Road, Minhang District, Shanghai, 201102, China
| | - Jingyu Gong
- Department of Pediatrics, Jinshan Hospital of Fudan University, Shanghai, China
| | - Jian-She Wang
- The Center for Pediatric Liver Diseases, Children's Hospital of Fudan University, 399 Wanyuan Road, Minhang District, Shanghai, 201102, China.
- Shanghai Key Laboratory of Birth Defect, Shanghai, China.
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Tang YP, Gong JY, Setchell KDR, Zhang W, Zhao J, Wang JS. Successful treatment of infantile oxysterol 7α-hydroxylase deficiency with oral chenodeoxycholic acid. BMC Gastroenterol 2021; 21:163. [PMID: 33849447 PMCID: PMC8045390 DOI: 10.1186/s12876-021-01749-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 04/05/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Deficiency of oxysterol 7α-hydroxylase, encoded by CYP7B1, is associated with fatal infantile progressive intrahepatic cholestasis and hereditary spastic paraplegia type 5. Most reported patients with CYP7B1 mutations presenting with liver disease in infancy have died of liver failure. However, it was recently reported that two patients treated with chenodeoxycholic acid survived. Correlations between the phenotype and genotype of CYP7B1 deficiency have not been clearly established. CASE PRESENTATION A 5-month-7-day-old Chinese baby from non-consanguineous parents was referred for progressive cholestasis and prolonged prothrombin time from one month of age. Genetic testing revealed compound heterozygous mutations c.187C > T(p.R63X)/c.334C > T(p.R112X) in CYP7B1, and fast atom bombardment mass spectrometry analysis of the urinary bile acid confirmed the presence of atypical hepatotoxic 3β-hydroxy-Δ5-bile acids. While awaiting liver transplantation she was orally administered chenodeoxycholic acid. Her liver function rapidly improved, urine atypical bile acids normalized, and she thrived well until the last follow-up at 23 months of age. Her 15-year-old brother, with no history of infantile cholestasis but harboring the same mutations in CYP7B1, had gait abnormality from 13 years of age. Neurological examination revealed hyper-reflexia and spasticity of the lower limbs. Brain MRI revealed enlarged perivascular space in the bilateral basal ganglia and white matter of frontal parietal. CONCLUSIONS In summary, these findings highlight that the phenotype of CYP7B1 deficiency varies widely, even in siblings and that early administration of chenodeoxycholic acid may improve prognosis.
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Affiliation(s)
- Yun-Ping Tang
- Department of Pediatrics, Jinshan Hospital, Fudan University, Shanghai, 201508, China.,Department of Gastroenterology, Qilu Children's Hospital of Shandong University, Jinan, 250022, Shandong, China
| | - Jing-Yu Gong
- Department of Pediatrics, Jinshan Hospital, Fudan University, Shanghai, 201508, China
| | - Kenneth D R Setchell
- Department of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Wujuan Zhang
- Department of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Jing Zhao
- The Center for Pediatric Liver Diseases, Children's Hospital of Fudan University, 399 Wanyuan Road, Shanghai, 201102, China
| | - Jian-She Wang
- The Center for Pediatric Liver Diseases, Children's Hospital of Fudan University, 399 Wanyuan Road, Shanghai, 201102, China.
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Open-label Phase 3 Continuation Study of Cholic Acid in Patients With Inborn Errors of Bile Acid Synthesis. J Pediatr Gastroenterol Nutr 2020; 70:423-429. [PMID: 31899729 DOI: 10.1097/mpg.0000000000002618] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND In patients with bile acid synthesis disorders (BASD), impairment in the primary bile acid synthetic pathway leads to reduced primary bile acids, upregulated synthesis of cholesterol, and production and accumulation of hepatotoxic atypical bile acids. Primary bile acid therapy downregulates bile acid synthesis, reduces the production of hepatotoxic intermediates, and produces a functional bile acid pool fostering normal liver function. METHODS This phase 3, open-label, single-arm study included patients with BASD who had received cholic acid (10-15 mg · kg · day) as part of a previous study, or were newly diagnosed. Efficacy assessments included urinary atypical bile acids; serum liver chemistries; body weight and height. Efficacy analyses compared baseline with worst postbaseline response (primary) or best postbaseline response (sensitivity). Treatment-emergent adverse events (TEAEs) were summarized. RESULTS Of 53 total patients (single enzyme defects, n = 41; Zellweger spectrum disorders, n = 12), 22 (42%) were treatment-naïve, and 31 (58%) were on cholic acid from a previous study. Mean age at diagnosis was 55 months, and at present study, baseline was 9 years. Using baseline-to-best postbaseline analyses, statistically significant improvements in urinary bile acids (P = 0.003), height (P < 0.001), and body weight (P < 0.001) were observed. Serum alanine aminotransferase and aspartate aminotransferase levels tended to decrease from baseline in treatment-naïve patients following cholic acid treatment and remained stable in previously treated patients. Treatment-naïve patients improved in all baseline-to-best postbaseline analyses. The most common TEAE was upper respiratory tract infection (17%). CONCLUSION Oral cholic acid provides a safe and efficacious short- and long-term therapy for patients with BASD.
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Gonzales E, Matarazzo L, Franchi-Abella S, Dabadie A, Cohen J, Habes D, Hillaire S, Guettier C, Taburet AM, Myara A, Jacquemin E. Cholic acid for primary bile acid synthesis defects: a life-saving therapy allowing a favorable outcome in adulthood. Orphanet J Rare Dis 2018; 13:190. [PMID: 30373615 PMCID: PMC6206929 DOI: 10.1186/s13023-018-0920-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 09/24/2018] [Indexed: 02/08/2023] Open
Abstract
Background Oral cholic acid (CA) replacement has been shown to be an effective therapy in children with primary bile acid synthesis defects, which are rare and severe genetic liver diseases. To date there has been no report of the effects of this therapy in children reaching adulthood. The aim of the study was to evaluate the long-term effectiveness and safety of CA therapy. Methods Fifteen patients with either 3β-hydroxy-Δ5-C27-steroid oxidoreductase (3β-HSD) (n = 13) or Δ4–3-oxosteroid 5β-reductase (Δ4–3-oxo-R) (n = 2) deficiency confirmed by mass spectrometry and gene sequencing received oral CA and were followed prospectively. Results The median age at last follow-up and the median time of follow-up with treatment were 24.3 years (range: 15.3–37.2) and 21.4 years (range: 14.6–24.1), respectively. At last evaluation, physical examination findings and blood laboratory test results were normal in all patients. Liver sonograms were normal in most patients. Mean daily CA dose was 6.9 mg/kg of body weight. Mass spectrometry analysis of urine showed that excretion of the atypical metabolites remained low or traces in amount with CA therapy. Liver fibrosis scored in liver biopsies or assessed by elastography in 14 patients, after 10 to 24 years with CA therapy, showed a marked improvement with disappearance of cirrhosis (median score < F1; range: F0-F2). CA was well tolerated in all patients, including five women having 10 uneventful pregnancies during treatment. Conclusions Oral CA therapy is a safe and effective long-term treatment of 3β-HSD and Δ4–3-oxo-R deficiencies and allows affected children to reach adulthood in good health condition without the need for a liver transplantation.
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Affiliation(s)
- Emmanuel Gonzales
- Pediatric Hepatology and Pediatric Liver Transplantation Unit, National Reference Centre for rare pediatric liver diseases and Filfoie, Hôpital Bicêtre, Assistance Publique-Hôpitaux de Paris, Paris, France.,Faculty of Medicine Paris - Sud, University Paris - Sud / Paris - Saclay, Paris, France.,INSERM UMR-S1174 and Hepatinov, University Paris -Sud / Paris - Saclay, Orsay, France.,Service d'Hépatologie et de Transplantation Hépatique Pédiatriques, Hôpital Bicêtre, 78, rue du Général Leclerc, Le Kremlin-Bicêtre, France
| | | | - Stéphanie Franchi-Abella
- Faculty of Medicine Paris - Sud, University Paris - Sud / Paris - Saclay, Paris, France.,Pediatric Radiology Unit, Hôpital Bicêtre, Assistance Publique - Hôpitaux de Paris, Paris, France
| | - Alain Dabadie
- Department of Pediatrics, Hôpital Sud, Rennes, France
| | - Joseph Cohen
- Pediatric Hepatology and Pediatric Liver Transplantation Unit, National Reference Centre for rare pediatric liver diseases and Filfoie, Hôpital Bicêtre, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Dalila Habes
- Pediatric Hepatology and Pediatric Liver Transplantation Unit, National Reference Centre for rare pediatric liver diseases and Filfoie, Hôpital Bicêtre, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Sophie Hillaire
- Hepatology Unit, Hôpital Foch, and Hôpital Beaujon, Assistance Publique - Hôpitaux de Paris, Paris, France
| | - Catherine Guettier
- Faculty of Medicine Paris - Sud, University Paris - Sud / Paris - Saclay, Paris, France.,Pathology Unit, Hôpital Bicêtre, Assistance Publique - Hôpitaux de Paris, Paris, France
| | - Anne-Marie Taburet
- Pharmacy Unit, Hôpital Bicêtre, Assistance Publique - Hôpitaux de Paris, Paris, France
| | - Anne Myara
- Groupe Hospitalier Paris Saint-Joseph, Paris, France
| | - Emmanuel Jacquemin
- Pediatric Hepatology and Pediatric Liver Transplantation Unit, National Reference Centre for rare pediatric liver diseases and Filfoie, Hôpital Bicêtre, Assistance Publique-Hôpitaux de Paris, Paris, France. .,Faculty of Medicine Paris - Sud, University Paris - Sud / Paris - Saclay, Paris, France. .,INSERM UMR-S1174 and Hepatinov, University Paris -Sud / Paris - Saclay, Orsay, France.
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Shneider BL, Spino C, Kamath BM, Magee JC, Bass LM, Setchell KD, Miethke A, Molleston JP, Mack CL, Squires RH, Murray KF, Loomes KM, Rosenthal P, Karpen SJ, Leung DH, Guthery SL, Thomas D, Sherker AH, Sokol RJ. Placebo-Controlled Randomized Trial of an Intestinal Bile Salt Transport Inhibitor for Pruritus in Alagille Syndrome. Hepatol Commun 2018; 2:1184-1198. [PMID: 30288474 PMCID: PMC6167076 DOI: 10.1002/hep4.1244] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/13/2018] [Indexed: 01/06/2023] Open
Abstract
Medically refractory, severe, cholestasis-induced pruritus in Alagille syndrome may be improved by surgical interruption of the enterohepatic circulation. This multicenter trial (NCT02057692) tested the hypothesis that the intestinal bile acid transport inhibitor maralixibat would similarly reduce pruritus in Alagille syndrome. Thirty-seven children with Alagille syndrome were randomly assigned to double-blinded administration of placebo, 70, 140, or 280 µg/kg/day of maralixibat for 13 weeks. Pruritus was assessed by caregiver (itch-reported outcome instrument [ItchRO]) and clinician report (range, 0-4 [severe]). Liver chemistries and serum bile acids were measured. The primary outcome was the change from baseline to week 13 in ItchRO relative to placebo. In the a priori first analysis of the primary efficacy endpoint, the mean adjusted difference between participants receiving 140 or 280 µg/kg/day and placebo was -0.47 (95% confidence interval [CI], -1.14, 0.20; P = 0.16). Statistically significant decreases were observed with doses of 70 and 140 µg/kg/day (mean adjusted difference, -0.89; 95% CI, -1.70, -0.08; P = 0.032; and mean adjusted difference, -0.91; 95% CI, -1.62, -0.19; P = 0.014) but not 280 µg/kg/day (mean adjusted difference, -0.04; 95% CI, -0.94, 0.86; P = 0.44) or all doses combined (mean adjusted difference, -0.61; 95% CI, -1.24, 0.20; P = 0.055). A 1-point reduction in pruritus was more common in maralixibat-treated versus placebo-treated participants (caregiver ItchRO, 65% versus 25%; P = 0.06; clinician score, 76% versus 25%; P = 0.01). There were no significant changes in liver chemistries or bile acids relative to placebo. Adverse and serious adverse events were similar between maralixibat and placebo. Conclusion: Although the prespecified primary analyses of ItchRO were not all statistically significant, the data suggest that maralixibat is safe and may reduce pruritus in Alagille syndrome.
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Affiliation(s)
- Benjamin L. Shneider
- Section of Pediatric Gastroenterology, Hepatology, and NutritionBaylor College of MedicineHoustonTX
| | - Cathie Spino
- School of Public HealthUniversity of MichiganAnn ArborMI
| | - Binita M. Kamath
- Division of Gastroenterology, Hepatology, and Nutrition, Hospital for Sick ChildrenUniversity of TorontoTorontoCanada
| | | | - Lee M. Bass
- Pediatrics Division of Gastroenterology, Hepatology, and NutritionAnn and Robert H. Lurie Children’s Hospital of ChicagoChicagoIL
| | - Kenneth D. Setchell
- Department of Pediatrics‐PathologyCincinnati Children’s Hospital Medical CenterCincinnatiOH
| | - Alexander Miethke
- Division of Pediatric Gastroenterology, Hepatology, and NutritionCincinnati Children’s Hospital Medical CenterCincinnatiOH
| | - Jean P. Molleston
- Division of Pediatric Gastroenterology, Hepatology, and NutritionIndiana University School of Medicine/Riley Hospital for ChildrenIndianapolisIN
| | - Cara L. Mack
- Section of Pediatric Gastroenterology, Hepatology, and NutritionChildren's Hospital ColoradoAuroraCO
| | | | - Karen F. Murray
- Division of Gastroenterology and HepatologyUniversity of Washington School of Medicine, Seattle Children’s HospitalSeattleWA
| | - Kathleen M. Loomes
- Pediatric Gastroenterology, Hepatology, and NutritionChildren’s Hospital of PhiladelphiaPhiladelphiaPA
| | - Philip Rosenthal
- Division of Gastroenterology, Hepatology, and Nutrition, Department of PediatricsUniversity of California San FranciscoSan FranciscoCA
| | - Saul J. Karpen
- Pediatric Gastroenterology, Hepatology, and NutritionEmory University School of Medicine/Children’s Healthcare of AtlantaAtlantaGA
| | - Daniel H. Leung
- Section of Pediatric Gastroenterology, Hepatology, and NutritionBaylor College of MedicineHoustonTX
| | - Stephen L. Guthery
- Pediatric Gastroenterology, Hepatology, and NutritionUniversity of UtahSalt Lake CityUT
| | - Danny Thomas
- Department of GastroenterologyChildren's Hospital Los AngelesLos AngelesCA
| | - Averell H. Sherker
- Liver Diseases Research Branch, National Institute of Diabetes and Digestive and Kidney DiseasesNational Institutes of HealthBethesdaMD
| | - Ronald J. Sokol
- Section of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of PediatricsUniversity of Colorado School of MedicineAuroraCO
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Abstract
OBJECTIVES Early diagnosis of bile acid synthesis disorders (BASDs) is important because, untreated, these conditions can be fatal. Our objectives were to screen children with cholestasis or unexplained liver disease for BASD and in those with confirmed BASD to evaluate the effectiveness of cholic acid therapy. METHODS A routine serum total bile acid measurement was performed on children with cholestasis, liver cirrhosis, and liver failure. Patients were screened for BASD by fast atom bombardment ionization-mass spectrometry (FAB-MS) analysis of urine, and molecular analysis confirmed diagnosis. Treatment response to oral cholic acid (10-15 mg/kg bw/day) was assessed from liver function tests and fat-soluble vitamin levels. FAB-MS analysis of urine was used to monitor compliance and biochemical response. RESULTS Between 2007 and 2016, 626 patients were evaluated; 450 with infantile cholestasis. Fifteen cases of BASD were diagnosed: 12 presented with infantile cholestasis (2.7%, 7 boys), an 8-year-old boy presented with cirrhosis, and two 18-month-old boys presented with hepatomegaly and rickets. Eleven were caused by 3β-hydroxy-Δ-C27-steroid oxidoreductase dehydrogenase deficiency, 3 from Δ-3-oxosteroid 5β-reductase deficiency, and 1 had Zellweger spectrum disorder. In all but 1, serum total bile acids were normal or low. With cholic acid therapy, 10 are alive and healthy with their native liver. Liver failure developed in 3 infants despite therapy; 2 died and 1 underwent liver transplantation. CONCLUSIONS BASDs are rare but treatable causes of metabolic liver disease in Saudi Arabia. BASD should be considered in infants with cholestasis and low or normal serum total bile acid concentrations.
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Severe Neonatal Cholestasis in Cerebrotendinous Xanthomatosis: Genetics, Immunostaining, Mass Spectrometry. J Pediatr Gastroenterol Nutr 2017; 65:561-568. [PMID: 28937538 DOI: 10.1097/mpg.0000000000001730] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Cerebrotendinous xanthomatosis (CTX) is caused by defects in sterol 27-hydroxylase (CYP27A1, encoded by CYP27A1), a key enzyme in the bile acid synthesis pathway. CTX usually presents as neurologic disease in adults or older children. The rare reports of CTX manifest as neonatal cholestasis assess the cholestasis as transient, with patient survival. Our experience differs. METHODS Homozygous or compound heterozygous CYP27A1 mutations were detected in 8 neonatal cholestasis patients by whole exome sequencing, panel sequencing, or Sanger sequencing. Their clinical and biochemical data were retrospectively reviewed. Immunostaining for CYP27A1 was conducted in liver of 4 patients. Mass spectrometry was used to analyze patients' urine samples. RESULTS All 8 infants had severe cholestasis. Five died from, or were transplanted for, liver failure; 3 cleared their jaundice eventually. Marking for CYP27A1 was weak or absent in 3 of the 4 patient specimens. Mass spectrometry of urine revealed a predominance of sulfated and doubly conjugated (sulfated-glucuronidated) bile alcohols. No patient harbored a putatively pathogenic mutation in genes other than CYP27A1 that have been implicated in cholestatic liver disease. CONCLUSIONS CTX manifest as neonatal cholestasis has a bile acid profile different from CTX manifest in later life, and thus may be overlooked. Immunostaining, mass spectrometry of urine, and genetic studies can support one another in making the diagnosis. A substantial proportion of CTX patients with severe neonatal cholestasis may die or need liver transplantation. CTX manifest in infancy as severe cholestasis warrants further investigation of biochemical diagnostic criteria and best management.
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Lipidomics of human umbilical cord serum: identification of unique sterol sulfates. Future Sci OA 2017; 3:FSO193. [PMID: 28883994 PMCID: PMC5583693 DOI: 10.4155/fsoa-2017-0012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 02/24/2017] [Indexed: 11/17/2022] Open
Abstract
Aim: There are currently limited lipidomics data for human umbilical cord blood. Therefore, the lipidomes of cord sera from six newborns and sera from six nonpregnant females were compared. Materials & methods: Sera lipidomics analyses were conducted using a high-resolution mass spectrometry analytical platform. Results: Cord serum contained a diverse array of glycerophospholipids, albeit generally at lower concentrations than monitored in adult serum. The unexpected observations were that cord serum contained several neurosteroid sulfates and bile acid sulfates that were not detectable in adult serum. Conclusion: Our data are the first to demonstrate that cord serum contains bile acid sulfates that are synthesized early in the hydroxylase, neutral and acidic pathways of primary bile acid biosynthesis and support previous publications of cord blood perfluoralkyl toxins in newborns. Umbilical cord blood offers the potential to increase our understanding of fetal development during pregnancy and during development after delivery. Our studies of complex sterols in umbilical cord blood (bile acid sulfates) suggest that with further studies these may be useful biomarkers of abnormal fetal liver development.
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Oral Cholic Acid Is Efficacious and Well Tolerated in Patients With Bile Acid Synthesis and Zellweger Spectrum Disorders. J Pediatr Gastroenterol Nutr 2017; 65. [PMID: 28644367 PMCID: PMC5559188 DOI: 10.1097/mpg.0000000000001657] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVES Patients with bile acid synthesis disorders (BASDs) due to single enzyme defects (SEDs) or Zellweger spectrum disorders (ZSDs) accumulate hepatotoxic atypical bile acids resulting in potentially fatal progressive liver disease. We evaluated the efficacy and safety of oral cholic acid in patients with BASD. METHODS In this phase 3, open-label, single-arm, nonrandomized, noncomparative study conducted over 18 years, patients were administered cholic acid orally 10 to 15 mg · kg · day. The primary efficacy variables were changes from pre- to post-treatment in atypical urinary bile acids, liver chemistries (serum aspartate aminotransferase, alanine aminotransferase), and height and weight. Additional efficacy variables included changes in serum bilirubin and liver histology. RESULTS Of the 85 enrolled patients (63 with SED and 22 with ZSD), 79 received at least 1 dose of study medication; 70 patients (50 with SED and 20 with ZSD) were included in the modified intent-to-treat dataset. Cholic acid significantly improved urine bile acid metabolite scores (P < 0.0001) and serum aspartate aminotransferase and alanine aminotransferase (P < 0.0001) in patients with SED and ZSD. Cholic acid also improved height and weight percentiles in both groups, but only the change in weight was significant (P < 0.05). Serum direct bilirubin decreased significantly post-treatment (P < 0.001) in the intent-to-treat population, and liver biopsies showed either stable findings or histologic improvement in all parameters except bridging fibrosis. The overall safety profile of cholic acid was favorable, with no study drug-related serious adverse events or drug-related deaths reported. CONCLUSIONS Oral cholic acid is a safe, efficacious, and well-tolerated treatment for BASD due to SED and ZSD.
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Vaz FM, Ferdinandusse S. Bile acid analysis in human disorders of bile acid biosynthesis. Mol Aspects Med 2017; 56:10-24. [PMID: 28322867 DOI: 10.1016/j.mam.2017.03.003] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/11/2017] [Accepted: 03/16/2017] [Indexed: 01/17/2023]
Abstract
Bile acids facilitate the absorption of lipids in the gut, but are also needed to maintain cholesterol homeostasis, induce bile flow, excrete toxic substances and regulate energy metabolism by acting as signaling molecules. Bile acid biosynthesis is a complex process distributed across many cellular organelles and requires at least 17 enzymes in addition to different metabolite transport proteins to synthesize the two primary bile acids, cholic acid and chenodeoxycholic acid. Disorders of bile acid synthesis can present from the neonatal period to adulthood and have very diverse clinical symptoms ranging from cholestatic liver disease to neuropsychiatric symptoms and spastic paraplegias. This review describes the different bile acid synthesis pathways followed by a summary of the current knowledge on hereditary disorders of human bile acid biosynthesis with a special focus on diagnostic bile acid profiling using mass spectrometry.
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Affiliation(s)
- Frédéric M Vaz
- Department of Clinical Chemistry and Pediatrics, Laboratory Genetic Metabolic Diseases, Academic Medical Center, Amsterdam, The Netherlands.
| | - Sacha Ferdinandusse
- Department of Clinical Chemistry and Pediatrics, Laboratory Genetic Metabolic Diseases, Academic Medical Center, Amsterdam, The Netherlands
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Rapid identification of bile acids in snake bile using ultrahigh-performance liquid chromatography with electrospray ionization quadrupole time-of-flight tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1036-1037:157-169. [DOI: 10.1016/j.jchromb.2016.10.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 09/21/2016] [Accepted: 10/09/2016] [Indexed: 02/04/2023]
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Lickteig AJ, Csanaky IL, Pratt-Hyatt M, Klaassen CD. Activation of Constitutive Androstane Receptor (CAR) in Mice Results in Maintained Biliary Excretion of Bile Acids Despite a Marked Decrease of Bile Acids in Liver. Toxicol Sci 2016; 151:403-18. [PMID: 26984780 DOI: 10.1093/toxsci/kfw054] [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] [Indexed: 01/07/2023] Open
Abstract
Activation of Constitutive Androstane Receptor (CAR) protects against bile acid (BA)-induced liver injury. This study was performed to determine the effect of CAR activation on bile flow, BA profile, as well as expression of BA synthesis and transport genes. Synthetic CAR ligand 1,4-bis-[2-(3,5-dichloropyridyloxy)]benzene (TCPOBOP) was administered to mice for 4 days. BAs were quantified by UPLC-MS/MS (ultraperformance liquid chromatography-tandem mass spectrometry). CAR activation decreases total BAs in livers of male (49%) and female mice (26%), largely attributable to decreases of the 12α-hydroxylated BA taurocholic acid (T-CA) (males (M) 65%, females (F) 45%). Bile flow in both sexes was increased by CAR activation, and the increases were BA-independent. CAR activation did not alter biliary excretion of total BAs, but overall BA composition changed. Excretion of muricholic (6-hydroxylated) BAs was increased in males (101%), and the 12α-OH proportion of biliary BAs was decreased in both males (37%) and females (28%). The decrease of T-CA in livers of males and females correlates with the decreased mRNA of the sterol 12α-hydroxylase Cyp8b1 in males (71%) and females (54%). As a response to restore BAs to physiologic concentrations in liver, mRNA of Cyp7a1 is upregulated following TCPOBOP (males 185%, females 132%). In ilea, mRNA of the negative feedback regulator Fgf15 was unaltered by CAR activation, indicating biliary BA excretion was sufficient to maintain concentrations of total BAs in the small intestine. In summary, the effects of CAR activation on BAs in male and female mice are quite similar, with a marked decrease in the major BA T-CA in the liver.
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Affiliation(s)
- Andrew J Lickteig
- *Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas 66160
| | - Iván L Csanaky
- *Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas 66160; Division of Clinical Pharmacology, Toxicology and Therapeutic Innovation, Children's Mercy Hospital & Clinics, Kansas City, Missouri 64108; Department of Pediatrics, University of Kansas Medical Center, Kansas City, Kansas 66160
| | - Matthew Pratt-Hyatt
- *Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas 66160
| | - Curtis D Klaassen
- *Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas 66160; *Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas 66160;
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