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Zhang Z, Li J, Zhang Z, Shao Z. Tumor-induced Osteomalacia: A Case Report and Etiological Analysis with Literature Review. Orthop Surg 2023; 15:3342-3352. [PMID: 37933469 PMCID: PMC10694022 DOI: 10.1111/os.13901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 08/22/2023] [Accepted: 08/27/2023] [Indexed: 11/08/2023] Open
Abstract
BACKGROUND Tumor-induced osteomalacia (TIO) belongs to a rare disease of the paraneoplastic syndrome. Phosphate uric mesenchymal tumor (PMT) is the most common cause of TIO, while the possibility of other tumors cannot be excluded. CASE PRESENTATION We present a case of a 36-year-old female patient with systemic skeletal abnormalities. The woman complained of low back pain with mild motor dysfunction for 2 years. Laboratory examination showed abnormalities in markers of bone metabolism, parathyroid hormone (PTH), vitamin D and serum phosphorus. Pooled imaging examination indicated extension abnormalities in the skeletal system and a single lesion in the right femoral head. The lesion of the right femoral was imaging with somatostatin receptor-positive, which was highly suggestive of a single neuroendocrine tumor. CT guided right femoral tumorectomy and bone grafting were performed when medical treatment failed. Postoperative pathological diagnosis was phosphate urinary mesenchymal tumor secreting fibroblast growth factor 23 (FGF23), which accorded with pre-operative expectations. The postoperative symptoms were effectively relieved, and indicators returned to normal. CONCLUSION The tumors causing TIO exhibited significant heterogeneity in terms of tissue origin, pathological characteristics and biological behavior, but the unique common characteristic is the secretion of FGF23. With significant progress in diagnosis and treatment, the clinical follow-up of most TIO patients shows a good prognosis, but the prognosis of those with malignant tumors is relatively poor.
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Affiliation(s)
- Zhenhao Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Jiaxin Li
- Department of Orthopaedics, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Zhicai Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
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Li J, Zang X, Heng H, Liu X, Geng H, Liang J. Fanconi syndrome induced by the long-term use of tenofovir disoproxil fumarate: a case report and literature review. J Int Med Res 2023; 51:3000605231195469. [PMID: 37666224 PMCID: PMC10478560 DOI: 10.1177/03000605231195469] [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: 04/12/2023] [Accepted: 07/28/2023] [Indexed: 09/06/2023] Open
Abstract
We present the case of a woman of 50 years of age who experienced widespread bone pain along with digestive symptoms, including nausea and vomiting. She had been prescribed tenofovir disoproxil fumarate (TDF) tablets for the treatment of hepatitis B. Laboratory testing revealed low circulating phosphorus and potassium concentrations and acidosis. A whole-body bone scan revealed abnormal bone metabolism. Rheumatologic and urologic conditions were ruled out, and therefore TDF-induced Fanconi syndrome (FS) and related bone pain was diagnosed. After the TDF was discontinued, the patient's symptoms and laboratory indices significantly improved. In this manuscript, we highlight the clinical manifestations of and laboratory test results associated with FS and summarize the cases of TDF-induced FS reported on PubMed between 2013 and 2022 to improve understanding of FS.
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Affiliation(s)
- Jiayi Li
- Graduate School, Bengbu Medical College, Anhui, China
| | - Xiu Zang
- Department of Endocrinology, Xuzhou Central Hospital, Jiangsu, China
| | - Hao Heng
- Department of Endocrinology, Xuzhou Central Hospital, Jiangsu, China
| | - Xuekui Liu
- Department of Endocrinology, Xuzhou Central Hospital, Jiangsu, China
| | - Houfa Geng
- Department of Endocrinology, Xuzhou Central Hospital, Jiangsu, China
| | - Jun Liang
- Graduate School, Bengbu Medical College, Anhui, China
- Department of Endocrinology, Xuzhou Central Hospital, Jiangsu, China
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Makris K, Mousa C, Cavalier E. Alkaline Phosphatases: Biochemistry, Functions, and Measurement. Calcif Tissue Int 2023; 112:233-242. [PMID: 36571614 DOI: 10.1007/s00223-022-01048-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/01/2022] [Indexed: 12/27/2022]
Abstract
Alkaline phosphatases (ALPs) are a group of isoenzymes, situated on the external layer of the cell membrane; they catalyze the hydrolysis of organic phosphate esters present in the extracellular space. Zinc and magnesium are significant co-factors for the biological activity of these enzymes. Although ALPs are available in various body tissues and have distinct physiochemical properties, they are true isoenzymes since they catalyze a similar reaction. In the liver, ALP is cytosolic and present in the canalicular membrane of the hepatocytes. ALPs are available in placenta, ileal mucosa, kidney, bone, and liver. However, most of the ALPs in serum (over 80%) are delivered from liver and bone and in more modest quantities from the intestines. Despite the fact that alkaline phosphatases are found in numerous tissues all through the body, their exact physiological function remains largely unknown.
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Affiliation(s)
- Konstantinos Makris
- Clinical Biochemistry Department, KAT General Hospital, Kifissia, Athens, Greece
- Laboratory for the Research of Musculoskeletal System "Th. Garofalidis", School of Medicine, National and Kapodistrian, University of Athens, Athens, Greece
| | - Chagigia Mousa
- 6th Orthopedic Department, KAT General Hospital, Kifissia, Athens, Greece
| | - Etienne Cavalier
- Department of Clinical Chemistry, CIRM, University of Liege, CHU de Liège, CHU Sart-Tilman, B-4000, Liège, Belgium.
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Rao M, Dadey L, Glowa T, Veldkamp P. Fanconi Syndrome Leading to Hypophosphatemic Osteomalacia Related to Tenofovir Use. Infect Dis Rep 2021; 13:448-453. [PMID: 34073672 PMCID: PMC8162330 DOI: 10.3390/idr13020044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 05/13/2021] [Accepted: 05/13/2021] [Indexed: 01/01/2023] Open
Abstract
Tenofovir disoproxil fumarate (TDF) is used worldwide to treat and prevent Human Immunodeficiency Virus (HIV) infection. Fanconi syndrome is a complication of TDF use and is characterized by inadequate reabsorption of glucose, phosphate and protein in the proximal tubule of the kidney which may eventually lead to osteomalacia manifested by symptoms of pain, muscular weakness and difficulty ambulating. We present a patient with severe osteomalacia due to progressive and unrecognized Fanconi's syndrome, who responded rapidly to TDF withdrawal, oral phosphate repletion and calcitriol. With the widespread use of TDF-containing antiviral regimens, it is critically important that physicians adhere to screening recommendations to detect early Fanconi syndrome, and recognize symptoms of osteomalacia as a serious complication.
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Affiliation(s)
- Mana Rao
- Essen Medical Associates Bronx, New York, NY 10453, USA
- Correspondence:
| | - Liam Dadey
- Parkview Health, Fort Wayne, IN 46805, USA;
| | - Thomas Glowa
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (T.G.); (P.V.)
| | - Peter Veldkamp
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (T.G.); (P.V.)
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Song K, Yan Q, Yang Y, Lv M, Chen Y, Dai Y, Zhang L, Huang Y, Zhang C, Gao H. Fanconi syndrome induced by adefovir dipivoxil: a case report and clinical review. J Int Med Res 2021; 48:300060520954713. [PMID: 33100076 PMCID: PMC7607140 DOI: 10.1177/0300060520954713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
More than 150 cases of Fanconi syndrome (FS) or hypophosphatemia osteomalacia induced by low-dose adefovir dipivoxil (ADV) have been reported since 2002, when ADV was introduced for the long-term treatment of hepatitis B virus (HBV) infection. Because the life expectancy of HBV-infected individuals has increased, the adverse effects of long-term treatment with antiviral therapies are increasingly observed, and nephrotoxicity is one of the most severe adverse effects of ADV. Therefore, the number of cases may be far higher than reported. Moreover, ADV-induced FS is often misdiagnosed or diagnosed long after it first develops. ADV-induced FS may seriously decrease patient quality of life and lead to bone fractures and even disability. Although progress has been made in the identification of biomarkers and treatments, few systematic clinical guidelines or clinical reviews for FS induced by ADV have been reported. In this study, we highlighted the recent progress toward understanding of FS induced by ADV, described a clinical case, and summarized the primary characteristics and laboratory findings of this disease.
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Affiliation(s)
- Kaixin Song
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qi Yan
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yi Yang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mengyue Lv
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuting Chen
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yue Dai
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Le Zhang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yi Huang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Cuntai Zhang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongyu Gao
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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