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Abstract
PURPOSE OF REVIEW To provide an overview of the role of genes and loci that predispose to Paget's disease of bone and related disorders. RECENT FINDINGS Studies over the past ten years have seen major advances in knowledge on the role of genetic factors in Paget's disease of bone (PDB). Genome wide association studies have identified six loci that predispose to the disease whereas family based studies have identified a further eight genes that cause PDB. This brings the total number of genes and loci implicated in PDB to fourteen. Emerging evidence has shown that a number of these genes also predispose to multisystem proteinopathy syndromes where PDB is accompanied by neurodegeneration and myopathy due to the accumulation of abnormal protein aggregates, emphasising the importance of defects in autophagy in the pathogenesis of PDB. Genetic factors play a key role in the pathogenesis of PDB and the studies in this area have identified several genes previously not suspected to play a role in bone metabolism. Genetic testing coupled to targeted therapeutic intervention is being explored as a way of halting disease progression and improving outcome before irreversible skeletal damage has occurred.
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Affiliation(s)
- Navnit S Makaram
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU, UK
| | - Stuart H Ralston
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU, UK.
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Klemm P, Dischereit G, von Gerlach S, Lange U. [Paget's disease of bone-a current review of clinical aspects, diagnostics and treatment]. Z Rheumatol 2020; 80:48-53. [PMID: 33005994 DOI: 10.1007/s00393-020-00897-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2020] [Indexed: 11/29/2022]
Abstract
Paget's disease is a monostotic or polyostotic progressive skeletal disease with a genetic predisposition. The affected bone areas show osseous swelling and often grotesque deformation, chronic pain and fractures. Many cases are asymptomatic for a long time resulting in a late diagnosis. The pathogenesis is still unknown. In addition to a genetic predisposition, viral factors are also discussed. Laboratory tests and imaging are used for diagnosis. The effective principle of medicinal bisphosphonate treatment is to inhibit osteoclastic bone resorption and should be initiated early to prevent secondary complications. This article presents the current knowledge about this rare osteological disease.
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Affiliation(s)
- P Klemm
- Abt. Rheumatologie, Klinische Immunologie, Osteologie und Physikalische Medizin, Campus Kerckhoff der Justus-Liebig Universität Gießen, Benekestr. 2-8, 61231, Bad Nauheim, Deutschland
| | - G Dischereit
- Abt. Rheumatologie, Klinische Immunologie, Osteologie und Physikalische Medizin, Campus Kerckhoff der Justus-Liebig Universität Gießen, Benekestr. 2-8, 61231, Bad Nauheim, Deutschland.,Rheumatologische Schwerpunktpraxis Marburg, Marburg, Deutschland
| | - S von Gerlach
- Institut für Pathologie, Universitätsklinikum Gießen-Marburg - Standort Marburg, Marburg, Deutschland
| | - U Lange
- Abt. Rheumatologie, Klinische Immunologie, Osteologie und Physikalische Medizin, Campus Kerckhoff der Justus-Liebig Universität Gießen, Benekestr. 2-8, 61231, Bad Nauheim, Deutschland.
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Gonc EN, Ozon A, Buyukyilmaz G, Alikasifoglu A, Simsek OP, Kandemir N. Acquired resistance to pamidronate treated effectively with zoledronate in juvenile Paget's disease. Osteoporos Int 2018; 29:1471-1474. [PMID: 29502293 DOI: 10.1007/s00198-018-4443-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 02/12/2018] [Indexed: 12/19/2022]
Abstract
Juvenile Paget's disease (JPD) is a rare autosomal recessive osteopathy. There is still a question about the most effective treatment modality in long-term prognosis. A 9-month-old boy who suffered from bone pain and deformities with a very high alkaline phosphatase level was diagnosed as JPD by radiographic findings. Genetic analysis showed a homozygous large deletion in TNFRSF11B gene encoding osteoprotegerin. Clinical improvement was observed with intravenous pamidronate therapy. However, the effect of drug reduced in time so the annual dose per kilogram body weight was increased after 2 years. Despite this increment, bone fractures developed and bone pain recurred with high-ALP levels, which suggested resistance to pamidronate. Switching to zoledronate resulted a significant improvement in bone findings radiographically and ALP level. Severe hypocalcemia requiring intravenous calcium treatment complicated the first dose of zoledronate, but not recurred thereafter. Intravenous pamidronate therapy is effective in reducing bone pain, improving bone deformities and motor development in infantile onset JPD. However, this effect can be transient. Switching to another bisphosphonate like zoledronate may provide long-term clinical and biochemical improvement as an alternative treatment in case of resistance to pamidronate therapy.
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Affiliation(s)
- E N Gonc
- Division of Pediatric Endocrinology, Hacettepe University Faculty of Medicine, 06100, Ankara, Turkey.
| | - A Ozon
- Division of Pediatric Endocrinology, Hacettepe University Faculty of Medicine, 06100, Ankara, Turkey
| | - G Buyukyilmaz
- Division of Pediatric Endocrinology, Hacettepe University Faculty of Medicine, 06100, Ankara, Turkey
| | - A Alikasifoglu
- Division of Pediatric Endocrinology, Hacettepe University Faculty of Medicine, 06100, Ankara, Turkey
| | - O P Simsek
- Division of Pediatric Genetics, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - N Kandemir
- Division of Pediatric Endocrinology, Hacettepe University Faculty of Medicine, 06100, Ankara, Turkey
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Ohara M, Imanishi Y, Nagata Y, Ishii A, Kobayashi I, Mori K, Ito M, Miki T, Nishizawa Y, Inaba M. Clinical efficacy of oral risedronate therapy in Japanese patients with Paget's disease of bone. J Bone Miner Metab 2015; 33:584-90. [PMID: 25319558 DOI: 10.1007/s00774-014-0623-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 07/10/2014] [Indexed: 11/29/2022]
Abstract
Paget's disease of bone (PDB) is a chronic disorder characterized by localized bone regions with excessive bone turnover. Although oral risedronate (17.5 mg daily for 8 weeks) was recently approved in Japan, its efficacy is not well understood. We retrospectively examined the efficacy of oral risedronate in PDB patients in a clinical setting. Eleven patients whose serum alkaline phosphatase (ALP) level exceeded the upper limit of the normal range were treated. Patients whose ALP levels normalized and remained so for 12 months after therapy initiation were defined as responders. Treatment was repeated if bone pain recurred or if serum ALP levels increased at least 25% above the nadir. Six patients (55%) were responsive to the therapy. A higher prevalence of skull lesions, higher serum calcium levels at treatment initiation and antecedent treatments of bisphosphonates were predictors of resistance against the therapy. Fresh frozen serum samples obtained from some treatment sessions were evaluated for metabolic bone markers such as bone-specific ALP (BAP), type I procollagen N-terminal pro-peptide (PINP), N-treminal crosslinking telopeptide of type I collagen and C-treminal crosslinking telopeptide of type I collagen (CTX). A significant reduction of P1NP preceded that of serum ALP levels in the responders, which was followed by a similar occurrence for BAP and osteocalcin (BGP) levels. A temporary decrease in CTX levels was noted. No significant changes in markers (including ALP level) were observed in non-responder and repeat-treatment groups. P1NP levels may be more useful than ALP levels in assessing treatment efficacy. Repeat treatment effectiveness for the repeat-treatment group was limited.
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Affiliation(s)
- Masaya Ohara
- Department of Metabolism, Endocrinology, and Molecular Medicine, Osaka City University Graduate School of Medicine, 1-4-3, Asahi-machi, Abeno-Ku, Osaka, 545-8585, Japan
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Tucci JR. ZOLEDRONIC ACID THERAPY OF PATIENTS WITH PAGET DISEASE OF BONE RESISTANT TO OR WITH UNSUSTAINED REMISSION FOLLOWING PRIOR BISPHOSPHONATE THERAPY. Endocr Pract 2015; 21:1111-6. [PMID: 26151420 DOI: 10.4158/ep15664.or] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To evaluate the effect of zoledronic acid (ZA) in patients with Paget disease (PD) who had not had a biochemical remission with prior bisphosphonate therapy or had a remission ≤12 months. METHODS The effects of ZA therapy were studied in 14 patients aged 54 to 90. Serum alkaline phosphatase (ALP) levels were elevated to at least 40% above the normal reference range, and glomerular filtration rates (GFRs) were ≥40 mL/minute. ZA (5 mg) was infused over 15 minutes. ALP and urine N-telopeptide/creatinine (NTx/Cr) were obtained before therapy and at 3, 6, 9, and 12 months, and thereafter at 4-month intervals. RESULTS At baseline, ALP ranged from 141 to 1,009 U/L. In 13 patients, ALP fell to normal following ZA administration. Remissions occurred in 9 patients who had not previously had a remission. Remissions varied from 12 to 60 months and were more prolonged in 4 patients with prior remissions ≤12 months. ZA failed to induce a remission in 1 patient. Ten to 12 days after therapy in 3 asymptomatic patients, serum calcium levels fell to 7.9, 8, and 8.3 mg/dL. Other than flu-like symptoms in 3 patients after ZA infusion, there were no other adverse effects. CONCLUSION Therapy with ZA induced remissions in 13/14 patients and induced more prolonged remissions in patients who previously had remissions ≤12 months. The lack of remission in 1 patient despite 2 courses of therapy is evidence of a continuing therapeutic challenge for some patients with a more resistant form of PD.
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Das S, Edwards PA, Crockett JC, Rogers MJ. Upregulation of endogenous farnesyl diphosphate synthase overcomes the inhibitory effect of bisphosphonate on protein prenylation in Hela cells. Biochim Biophys Acta Mol Cell Biol Lipids 2014; 1841:569-73. [DOI: 10.1016/j.bbalip.2013.12.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 12/12/2013] [Accepted: 12/17/2013] [Indexed: 11/29/2022]
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Parisi MS, Oliveri B. Long-term pamidronate treatment of polyostotic fibrous dysplasia of bone: A case series in young adults. Curr Ther Res Clin Exp 2014; 70:161-72. [PMID: 24683227 DOI: 10.1016/j.curtheres.2009.03.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/20/2008] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND Limited information is available about long-term pamidronate treatment in adults with fibrous dysplasia (FD) of bone. OBJECTIVE The aim of this case series was to report the clinical outcomes and the biochemical and densitometric findings in a group of young adult patients with polyostotic FD treated for ≥3 years with IV pamidronate. METHODS Pamidronate was administered every 6 months (60 mg/d for 3 days) for 2 years. Thereafter, treatment was individualized. Pamidronate was administered at shorter or longer intervals based on response. Bone pain, radiography, serum bone alkaline phosphatase (BALP) activity, and urinary C-terminal cross-linking telopep-tide of type I collagen (CTX-I) concentration were assessed for a mean of 7 years. Bone mineral density (BMD) of FD areas (FDas) and contralateral areas (CLas) were measured at baseline and at 12 and 24 months. Data were collected prospectively. RESULTS Seven patients (5 women, 2 men; mean [SD] age, 31.0 [7.2] years [range, 22-43 years]) were included in the study. Patients received IV pamidronate for a mean of 6.9 years (median, 7.1 years [range, 3.7-10.9 years]). Pamidronate was associated with a reduction in bone pain and a significant reduction in BALP in all patients at the end of follow-up (P < 0.02). The mean reduction from baseline in CTX-I concentration (measured in 3 patients) was 56%; this difference was not significant. Mean BMD values of FDas were significantly increased at 12 months (by 5.9%; P < 0.05) compared with baseline; but was not significantly increased at 24 months (7.3%), probably reflecting a higher dispersion of values due to individual responses to treatment. No significant changes were observed in CLa BMDs. Mean BMD of FDa had a numerically lower decrease of 15.3% compared with CLa at baseline; these decreases with pamidronate were 10.8% at 12 months (P = NS) and 9.3% at 24 months (P < 0.05). Refilling of osteolytic lesions was not observed. CONCLUSIONS These patients with FD of bone treated with IV pamidronate long term had improvement in bone pain and BMD. The effectiveness of individualized pamidronate administration in the long-term treatment of FD in adult patients should be investigated in blinded controlled trials.
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Affiliation(s)
- Muriel S Parisi
- Metabolic Bone Disease Section, University of Buenos Aires Hospital, Buenos Aires, Argentina
| | - Beatriz Oliveri
- Metabolic Bone Disease Section, University of Buenos Aires Hospital, Buenos Aires, Argentina
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Abstract
Paget's disease is an osteoclastic-mediated disorder of bone that results in abnormal bone resorption associated with inadequate remodeling that leads to mechanically weakened bone. Demonstrating variable geographic prevalence, it is becoming less frequent and age of onset is lengthening in areas of once high prevalence prior to the institution of effective medical therapies, suggesting its etiology involves both environmental as well as genetic factors. Insights into its pathophysiology are helping to clarify other inherited osteolytic disorders of bone by providing additional insights into related cellular processes.
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Affiliation(s)
- Gregory Gruener
- Leischner Institute of Medical Education and Department of Neurology, Loyola University Chicago, Stritch School of Medicine, Maywood, IL, USA.
| | - Pauline Camacho
- Loyola University Osteoporosis and Metabolic Bone Disease Center, Loyola University Chicago, Stritch School of Medicine, Maywood, IL, USA
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Shaker JL. Paget's Disease of Bone: A Review of Epidemiology, Pathophysiology and Management. Ther Adv Musculoskelet Dis 2012; 1:107-25. [PMID: 22870432 DOI: 10.1177/1759720x09351779] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Paget's disease of bone is a common disorder which may affect one or many bones. Although many patients are asymptomatic, a variety of symptoms and complications may occur. Fortunately, effective pharmacologic therapy, primarily with potent bisphosphonates, is now available to treat patients with complications or symptoms. This review of Paget's disease of bone will include epidemiology and pathophysiology, complications and clinical findings, indications for treatment, and the drugs currently available to treat this condition.
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Lojo Oliveira L, Torrijos Eslava A. Treatment of Paget's disease of bone. ACTA ACUST UNITED AC 2012; 8:220-4. [PMID: 22230789 DOI: 10.1016/j.reuma.2011.06.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 06/09/2011] [Accepted: 06/09/2011] [Indexed: 12/25/2022]
Abstract
Paget's disease of bone is the paradigm of bone focal distortion with accelerated bone turnover. Over the years, a number of different drugs have been used to control its activity but, since biphosphonates were introduced for the treatment of the disease, they have become the preferred treatment. This review will update the therapeutic indications, available drugs and therapeutic response monitoring.
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Affiliation(s)
- Leticia Lojo Oliveira
- Unidad Metabólica Ósea, Servicio de Reumatología, Hospital Universitario La Paz, Madrid, Spain.
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Gaál J, Bender T, Varga J, Horváth I, Kiss J, Somogyi P, Surányi P. Overcoming resistance to bisphosphonates through the administration of alfacalcidol: results of a 1-year, open follow-up study. Rheumatol Int 2011; 30:25-31. [PMID: 19308412 DOI: 10.1007/s00296-009-0892-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2008] [Accepted: 03/04/2009] [Indexed: 12/31/2022]
Abstract
This study intended to determine whether the replacement of vitamin D3 with alfacalcidol results in any bone mineral density (BMD) increase in 76 patients unresponsive to the combination of alendronate and conventional vitamin D3 treatment. In these patients the conventional vitamin D3 had been replaced with alfacalcidol (0.5 μg/day), and then the patients were followed up for a year. After treatment for 1 year, Wilcoxon test revealed a small but statistically significant (P < 0.001) increase in the BMD values of the forearm and lumbar vertebrae, in the serum calcium and urinary calcium/creatinine ratio in first-voided morning urine. However, the serum alkaline phosphatase activity, phosphorus, parathormone, osteocalcin levels and the urinary d-pyr/creatinine ratio decreased significantly (P < 0.001). As suggested by our results, combination therapy with alendronate and alfacalcidol increases bone density and improves the biochemical markers of bone turnover, without any substantial increase in the incidence of adverse effects.
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Affiliation(s)
- János Gaál
- Department of Rheumatology and Physical Therapy, Kenézy Gyula Hospital, BartókBéla u 2-26, 4043 Debrecen, Hungary.
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Seton M. Paget's disease of bone. Rheumatology (Oxford) 2011. [DOI: 10.1016/b978-0-323-06551-1.00202-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Merlotti D, Gennari L, Martini G, Nuti R. Current options for the treatment of Paget's disease of the bone. Open Access Rheumatol 2009; 1:107-120. [PMID: 27789985 PMCID: PMC5074726 DOI: 10.2147/oarrr.s4504] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Paget’s disease of bone (PDB) is a chronic bone remodelling disorder characterized by increased osteoclast-mediated bone resorption, with subsequent compensatory increases in new bone formation, resulting in a disorganized mosaic of woven and lamellar bone at affected skeletal sites. This disease is most often asymptomatic but can be associated with bone pain or deformity, fractures, secondary arthritis, neurological complications, deafness, contributing to substantial morbidity and reduced quality of life. Neoplastic degeneration of pagetic bone is a relatively rare event, occurring with an incidence of less than 1%, but has a grave prognosis. Specific therapy for PDB is aimed at decreasing the abnormal bone turnover and bisphosphonates are currently considered the treatment of choice. These treatments are associated with a reduction in plasma alkaline phosphatase (ALP) activity and an improvement in radiological and scintigraphic appearance and with a reduction in bone pain and bone deformity, Recently, the availability of newer, more potent nitrogen-containing bisphosphonates has improved treatment outcomes, allowing a more effective and convenient management of this debilitating disorder.
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Affiliation(s)
- Daniela Merlotti
- Department of Internal Medicine, Endocrine-Metabolic Sciences and Biochemistry, University of Siena, Siena, Italy
| | - Luigi Gennari
- Department of Internal Medicine, Endocrine-Metabolic Sciences and Biochemistry, University of Siena, Siena, Italy
| | - Giuseppe Martini
- Department of Internal Medicine, Endocrine-Metabolic Sciences and Biochemistry, University of Siena, Siena, Italy
| | - Ranuccio Nuti
- Department of Internal Medicine, Endocrine-Metabolic Sciences and Biochemistry, University of Siena, Siena, Italy
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Mossetti G, Gennari L, Rendina D, De Filippo G, Merlotti D, De Paola V, Fusco P, Esposito T, Gianfrancesco F, Martini G, Nuti R, Strazzullo P. Vitamin D receptor gene polymorphisms predict acquired resistance to clodronate treatment in patients with Paget's disease of bone. Calcif Tissue Int 2008; 83:414-24. [PMID: 19020788 DOI: 10.1007/s00223-008-9193-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2008] [Accepted: 10/29/2008] [Indexed: 01/14/2023]
Abstract
Bisphosphonates are first-choice drugs for treatment of Paget's disease of bone (PDB); nevertheless, acquired resistance to bisphosphonate therapy has been described in PDB patients. The 1,25(OH)(2)D(3)/vitamin D receptor (VDR) system influences the effectiveness of antiresorptive treatments in metabolic bone disorders. This study evaluated the relationship between acquired resistance to clodronate treatment and BsmI, TaqI, and FokI VDR polymorphisms in Caucasian patients with polyostotic PDB (n = 84). We also evaluated the influence of mutations in exons 7 and 8 of the sequestosome 1 (SQSTM1) gene on the occurrence of this phenomenon. All patients were treated from diagnosis for several cycles with intravenous clodronate infusion (1500 mg/cycle). Acquired resistance to clodronate treatment was defined as the failure of total alkaline phosphatase serum levels to be suppressed to at least 50% of the patient's previous highest levels during a subsequent treatment course with the same compound, which produced a >50% response after the first exposure. During an observation period of 10.6 +/- 2.7 years, 31 PDB patients (36.9%) showed acquired resistance to clodronate. It was observed that the bb and TT VDR genotypes as well as a lower persistence of the biochemical response to the first treatment course were significantly and independently associated with the risk of developing resistance to clodronate treatment. SQSTM1 gene mutations, considered altogether, did not influence the occurrence of this phenomenon. Our results indicate that 3'VDR allelic variants and duration of biochemical response to the first treatment course are independent predictors of acquired resistance to clodronate treatment in patients with polyostotic PDB.
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Affiliation(s)
- Giuseppe Mossetti
- Department of Clinical and Experimental Medicine, Federico II University Medical School, Via S. Pansini 5, Naples, 80131, Italy.
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The Second Most Common Bone Disease: A Review on Paget’s Disease of Bone. Eur J Trauma Emerg Surg 2008; 34:549-53. [DOI: 10.1007/s00068-008-8208-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2008] [Accepted: 10/30/2008] [Indexed: 11/26/2022]
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Diskin CJ, Stokes TJ, Dansby LM, Radcliff L, Carter TB. Malignancy-Related Hypercalcemia Developing on a Bisphosphonate but Responding to Calcitonin. Clin Lung Cancer 2007; 8:434-5. [PMID: 17681097 DOI: 10.3816/clc.2007.n.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Bisphosphonates are considered a cornerstone for the treatment of hypercalcemia of malignancy, whereas calcitonin has not been found to be as potent. We report a case of severe hypercalcemia of malignancy that developed while the patient was taking alendronate that responded to the use of calcitonin. A 73-year-old woman developed hypercalcemia of malignancy while taking weekly alendronate. The patients' serum calcium remained above 15 mg/dL despite hydration and loop diuretics for 48 hours in addition to the bisphosphonates, and resistance was suspected. Intravenous calcitonin produced a dramatic decrease within 12 hours and normal serum calcium within 24 hours of treatment. Calcitonin might be useful for hypercalcemia of malignancy resistant to bisphosphonates.
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Papapoulos SE, Eekhoff EMW, Zwinderman AH. Acquired resistance to bisphosphonates in Paget's disease of bone. J Bone Miner Res 2006; 21 Suppl 2:P88-91. [PMID: 17229015 DOI: 10.1359/jbmr.06s216] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Socrates E Papapoulos
- Department of Endocrinology and Metabolic Diseases, Leiden University Medical Center, Leiden, The Netherlands.
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Corral-Gudino L, del Pino-Montes J, García-Aparicio J, Corral E, Montilla CA, González-Sarmiento R. -511 C/T IL1B gene polymorphism is associated to resistance to bisphosphonates treatment in Paget disease of bone. Bone 2006; 38:589-94. [PMID: 16257277 DOI: 10.1016/j.bone.2005.09.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2005] [Revised: 08/31/2005] [Accepted: 09/15/2005] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Osteoclasts are the most important cells involved in the pathogenesis of Paget disease of bone (PDB). Cytokines stimulate osteoclast differentiation and activation, with some of them over-expressed in pagetic osteoclasts. We have assessed whether genetic variability in genes coding of proteins from the IL1 pathway clustered in chromosome 2 is associated with clinical characteristics and the therapeutic response of patients with PDB. METHODS We have studied -511 C/T and +3953 T/C polymorphisms of the IL1B gene, a HinfI polymorphism in the 5'UTR of the IL1R1 gene, and a variable number of tandem repeats (VNTR) in the intron 2 of the IL1RN gene, in 165 patients diagnosed as suffering from PDB and in 122 healthy controls. Distribution of genotypes and alleles was studied for association with clinical and laboratory data and response to bisphosphonate (BSP) treatment. RESULTS No differences were observed in the distribution of genotypes or alleles between PDB patients and control subjects. We also failed to detect differences concerning epidemiological, clinical and laboratory data in the series of PDB patients. However, the -511 CC genotype of the IL1B gene was associated with a higher percentage of resistance to BSP (49% vs. 20%; P = 0.00 for all BSP, 60% vs. 39%, P = 0.17 for etidronate, 50% vs. 37% P = 0.53 for clodronate, 48 vs. 34% P = 0.05 for tiludronate and 50% vs. 4% P = 0.01 for risedronate). CONCLUSIONS Our results suggest that the -511 CC genotype of the IL1B gene could be related to resistance to bisphosphonates in patients with PDB.
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Affiliation(s)
- Luis Corral-Gudino
- Servicio de Reumatología, Hospital Universitario de Salamanca, Po San Vicente 58-182, 37007 Salamanca, Spain
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Lyles KW. What is "resistance" in Paget's disease of bone? ARTHRITIS AND RHEUMATISM 2003; 48:2097-9. [PMID: 12905461 DOI: 10.1002/art.11135] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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