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1.
Osteoporos Int ; 2024 Apr 24.
Article in English | MEDLINE | ID: mdl-38653862

ABSTRACT

Review of medical records from 173 women with osteoporosis who received abaloparatide treatment revealed that 96.0% had at least one visit for osteoporosis management and 55.5% had medication support group access. The most common reasons for discontinuing treatment were financial (31.2%) and tolerability (22.8%). Most patients (64.8%) completed treatment as prescribed. PURPOSE: Abaloparatide is approved for the treatment of women with postmenopausal osteoporosis at high risk for fracture. This study evaluated real-world treatment patterns for patients new to abaloparatide, regardless of osteoporosis treatment history. METHODS: Data for patients with ≥ 1 prescription for abaloparatide were collected retrospectively from six academic and clinical practice settings across the US. RESULTS: A total of 173 patients were enrolled (mean [SD] age, 69.8 [7.4] years). At the time of abaloparatide treatment initiation, 78.6% had received other osteoporosis medications. Mean (SD) time from discontinuation of osteoporosis medications prior to initiation of abaloparatide was 1.7 (3.2) years. Twenty-four months of follow-up data from the initiation date of abaloparatide was collected from 94.0% of patients and 6.0% of patients had 12-24 months of follow-up. During the follow-up period, 96.0% of patients had at least one visit for osteoporosis management and 55.5% had access to a medication support program. The median duration of therapy was 18.6 months and 105/162 (64.8%) completed abaloparatide treatment as prescribed. The most common reasons for treatment discontinuation were financial (31.2%) and tolerability (22.8%). Following completion of a course of treatment with abaloparatide, 82/162 (50.6%) patients transitioned to another osteoporosis medication. The median time between abaloparatide treatment course completion and the initiation of follow-on medication was 21 days. CONCLUSION: Most patients completed treatment with abaloparatide as prescribed, and over half continued with an antiresorptive agent. This favorable conduct may be the result of regular follow-up visits and accessibility to both medication and patient support services.

2.
Osteoporos Int ; 35(1): 1-10, 2024 Jan.
Article in English | MEDLINE | ID: mdl-37982855

ABSTRACT

Hypophosphatasia (HPP) is a rare inborn error of metabolism that presents variably in both age of onset and severity. HPP is caused by pathogenic variants in the ALPL gene, resulting in low activity of tissue nonspecific alkaline phosphatase (TNSALP). Patients with HPP tend have a similar pattern of elevation of natural substrates that can be used to aid in diagnosis. No formal diagnostic guidelines currently exist for the diagnosis of this condition in children, adolescents, or adults. The International HPP Working Group is a comprised of a multidisciplinary team of experts from Europe and North America who have expertise in the diagnosis and management of patients with HPP. This group reviewed 93 papers through a Medline, Medline In-Process, and Embase search for the terms "HPP" and "hypophosphatasia" between 2005 and 2020 and that explicitly address either the diagnosis of HPP in children, clinical manifestations of HPP in children, or both. Two reviewers independently evaluated each full-text publication for eligibility and studies were included if they were narrative reviews or case series/reports that concerned diagnosis of pediatric HPP or included clinical aspects of patients diagnosed with HPP. This review focused on 15 initial clinical manifestations that were selected by a group of clinical experts.The highest agreement in included literature was for pathogenic or likely pathogenic ALPL variant, elevation of natural substrates, and early loss of primary teeth. The highest prevalence was similar, including these same three parameters and including decreased bone mineral density. Additional parameters had less agreement and were less prevalent. These were organized into three major and six minor criteria, with diagnosis of HPP being made when two major or one major and two minor criteria are present.


Subject(s)
Hypophosphatasia , Adult , Child , Humans , Adolescent , Hypophosphatasia/diagnosis , Hypophosphatasia/genetics , Alkaline Phosphatase/genetics , Europe , Prevalence , Mutation
3.
Osteoporos Int ; 35(3): 439-449, 2024 Mar.
Article in English | MEDLINE | ID: mdl-37982856

ABSTRACT

Hypophosphatasia (HPP) is an inborn error of metabolism caused by reduced or absent activity of the tissue non-specific alkaline phosphatase (TNSALP) enzyme, resulting from pathogenic variants in the ALPL gene. Clinical presentation of HPP is highly variable, including lethal and severe forms in neonates and infants, a benign perinatal form, mild forms manifesting in adulthood, and odonto-HPP. Diagnosis of HPP remains a challenge in adults, as signs and symptoms may be mild and non-specific. Disease presentation varies widely; there are no universal signs or symptoms, and the disease often remains underdiagnosed or misdiagnosed, particularly by clinicians who are not familiar with this rare disorder. The absence of diagnosis or a delayed diagnosis may prevent optimal management for patients with this condition. Formal guidelines for the diagnosis of adults with HPP do not exist, complicating efforts for consistent diagnosis. To address this issue, the HPP International Working Group selected 119 papers that explicitly address the diagnosis of HPP in adults through a Medline, Medline In-Process, and Embase search for the terms "hypophosphatasia" and "HPP," and evaluated the pooled prevalence of 17 diagnostic characteristics, initially selected by a group of HPP clinical experts, in eligible studies and in patients included in these studies. Six diagnostic findings showed a pooled prevalence value over 50% and were considered for inclusion as major diagnostic criteria. Based on these results and according to discussion and consideration among members of the Working Group, we finally defined four major diagnostic criteria and five minor diagnostic criteria for HPP in adults. Authors suggested the integrated use of the identified major and minor diagnostic criteria, which either includes two major criteria, or one major criterion and two minor criteria, for the diagnosis of HPP in adults.


Subject(s)
Hypophosphatasia , Infant , Adult , Infant, Newborn , Humans , Hypophosphatasia/diagnosis , Hypophosphatasia/epidemiology , Hypophosphatasia/genetics , Alkaline Phosphatase/genetics , Mutation , Prevalence
4.
Osteoporos Int ; 35(3): 431-438, 2024 Mar.
Article in English | MEDLINE | ID: mdl-37982857

ABSTRACT

BACKGROUND: This manuscript provides a summary of the current evidence to support the criteria for diagnosing a child or adult with hypophosphatasia (HPP). The diagnosis of HPP is made on the basis of integrating clinical features, laboratory profile, radiographic features of the condition, and DNA analysis identifying the presence of a pathogenic variant of the tissue nonspecific alkaline phosphatase gene (ALPL). Often, the diagnosis of HPP is significantly delayed in both adults and children, and updated diagnostic criteria are required to keep pace with our evolving understanding regarding the relationship between ALPL genotype and associated HPP clinical features. METHODS: An International Working Group (IWG) on HPP was formed, comprised of a multidisciplinary team of experts from Europe and North America with expertise in the diagnosis and management of patients with HPP. Methodologists (Romina Brignardello-Petersen and Gordon Guyatt) and their team supported the IWG and conducted systematic reviews following the GRADE methodology, and this provided the basis for the recommendations. RESULTS: The IWG completed systematic reviews of the literature, including case reports and expert opinion papers describing the phenotype of patients with HPP. The published data are largely retrospective and include a relatively small number of patients with this rare condition. It is anticipated that further knowledge will lead to improvement in the quality of genotype-phenotype reporting in this condition. CONCLUSION: Following consensus meetings, agreement was reached regarding the major and minor criteria that can assist in establishing a clinical diagnosis of HPP in adults and children.


Subject(s)
Hypophosphatasia , Adult , Child , Humans , Hypophosphatasia/diagnosis , Hypophosphatasia/genetics , Mutation , Retrospective Studies , Alkaline Phosphatase/genetics , Genotype , Phenotype
5.
Qual Life Res ; 30(4): 1073-1082, 2021 Apr.
Article in English | MEDLINE | ID: mdl-33170400

ABSTRACT

OBJECTIVES: Patient-reported outcome measures (PROMs) are increasingly utilized in the evaluation of patients with rheumatic diseases. The aim of our study was to assess the patient experience with completing PROMs within rheumatology clinics, and identify patient characteristics associated with a more positive experience. METHODS: We conducted a retrospective cross-sectional study of adult patients seen in rheumatology clinics between 1/1/2017 and 6/30/2017. Patients were included in the study if they completed at least one patient-reported experience question following completion of PROMs. Patient characteristics associated with more positive experiences were identified through multivariable proportional odds models. RESULTS: 12,597 adult patients (mean age 59 ± 15; 76% female; 84% white) completed PROMs, as well as questions on their experience completing PROMs. Patients agreed/strongly agreed that PROM questions were easy to understand (97%), useful (84%), helped their physician understand their health (78%), improved communication with their provider (78%) and improved control over their own care (70%). Predictors of better experience with PROMs included being younger, non-white, having lower income, and being a new patient. Worse self-reported health also predicted better experience with PROMs. CONCLUSION: Our study found a positive patient experience with PROMs, which is a crucial component of their successful implementation and utilization. Findings from this study suggest PROMs may be particularly beneficial in new patients, minorities, those with lower income, and worse self-reported quality of life. Collecting PROMs could provide opportunities to improve patient-provider communication and enhance control over care for rheumatology patients who could most benefit.


Subject(s)
Ambulatory Care/standards , Patient Reported Outcome Measures , Quality of Life/psychology , Rheumatology/methods , Cross-Sectional Studies , Female , Humans , Male , Middle Aged , Retrospective Studies , Surveys and Questionnaires
8.
J Clin Densitom ; 18(2): 145-9, 2015.
Article in English | MEDLINE | ID: mdl-25700662

ABSTRACT

Reimbursement for dual-energy X-ray absorptiometry (DXA) scans in the outpatient setting has declined significantly since 2006. Research through 2011 has suggested reimbursement reductions for DXA scans have corresponded with an overall decreased utilization of DXA. This study updates utilization estimates for DXAs through 2012 in patients with commercial insurance and compares DXA rates before and after reimbursement changes. We evaluated DXA utilization for women aged 50-64 yr from Marketscan Commercial Claims and Encounter database between January 2006 and December 2012 based on CPT codes. We estimated utilization rates per 1000 person years (PY). We also used segmented regression analysis of monthly rates to evaluate the change in utilization rates after a proposed reimbursement reduction in July 2009. In women aged 50-64 yr, 451,656 DXAs were performed in 2006, a rate of 144 DXAs per 1000 PY. This rate increased to 149 DXAs per 1000 PY in 2009 before decreasing to 110 DXAs per 1000 PY or 667,982 scans in 2012. DXA utilization increased by 2.24 per 1000 PY until July 2009 then declined by 12.98 DXAs per 1000 persons, resulting in 37.5 DXAs per PY fewer performed in 2012 compared with 2006. Since July 2009 a significant decline in DXA utilization occurred in a younger postmenopausal commercially insured population. This decline corresponds with a time period of reductions in Medicare DXA reimbursement.


Subject(s)
Absorptiometry, Photon/trends , Osteoporosis, Postmenopausal/diagnostic imaging , Absorptiometry, Photon/economics , Absorptiometry, Photon/statistics & numerical data , Female , Humans , Insurance, Health/statistics & numerical data , Middle Aged , Regression Analysis , Reimbursement Mechanisms , United States
9.
J Clin Densitom ; 16(4): 467-71, 2013.
Article in English | MEDLINE | ID: mdl-24055260

ABSTRACT

Dual-energy X-ray absorptiometry (DXA) is the method of choice to assess fracture risk for women 65 yr and older and men 70 yr and older. The 2007 International Society for Clinical Densitometry Official Positions had developed guidelines for assessing bone density in younger women during and after the menopausal transition and in men 50-69 yr and the 2008 National Osteoporosis Foundation (NOF) guidelines recommended testing in postmenopausal women younger than 65 yr and men 50-69 yr only in the presence of clinical risk factors. The purpose of the 2013 DXA Task Force was to reassess the NOF guidelines for ordering DXA in postmenopausal women younger than 65 yr and men 50-69 yr. The Task Force reviewed the literature published since the 2007 Position Development Conference and 2008 NOF, reviewing clinical decision rules such as the Osteoporosis Screening Tool and FRAX and sought to keep recommendations simple to remember and implement. Based on this assessment, the NOF guidelines were endorsed; DXA was recommended in those postmenopausal women younger than 65 yr and men 50-69 yr only in the presence of clinical risk factors for low bone mass, such as low body weight, prior fracture, high-risk medication use, or a disease or condition associated with bone loss.


Subject(s)
Absorptiometry, Photon/standards , Guidelines as Topic , Mass Screening , Osteoporosis/diagnostic imaging , Risk Assessment/methods , Aged , Bone Density , Female , Humans , Male , Osteoporosis/metabolism
10.
J Clin Densitom ; 16(4): 482-8, 2013.
Article in English | MEDLINE | ID: mdl-24063846

ABSTRACT

Vertebral fracture assessment (VFA) is a low-cost method of accurately identifying individuals who have clinically unrecognized or undocumented vertebral fractures at the time of bone density test. Because prevalent vertebral fractures predict subsequent fractures independent of bone mineral density and other clinical risk factors, their recognition is an important part of strategies to identify those who are at high risk of fracture, so that prevention therapies for those individuals can be implemented. The 2007 Position Development Conference developed detailed guidelines regarding the indications for acquisition of, and interpretation and reporting of densitometric VFA tests. The purpose of the 2013 VFA Task Force was to simplify the indications for VFA yet keep them evidence based. The Task Force reviewed the literature published since the 2007 Position Development Conference and developed prediction models based on 2 large cohort studies (the Study of Osteoporotic Fractures and the Osteoporotic Fractures in Men Study) and the densitometry database of the University of Chicago. Based on these prediction models, indications for VFA were reduced to a simplified set of criteria based on age, historical height loss, use of systemic glucocorticoid therapy, and self-reported but undocumented prior vertebral fracture.


Subject(s)
Densitometry/standards , Practice Guidelines as Topic , Societies, Medical , Spinal Fractures/diagnostic imaging , Bone Density , Humans , Radiography , Risk Factors , Spinal Fractures/etiology
11.
Curr Rheumatol Rep ; 14(3): 231-7, 2012 Jun.
Article in English | MEDLINE | ID: mdl-22527950

ABSTRACT

Rheumatoid arthritis is a chronic inflammatory disease that results in generalized bone loss and increased fracture risk. Characteristic radiologic features of rheumatoid arthritis include periarticular osteopenia and marginal erosions. An emerging literature highlights the importance of osteoclasts as mediators of the erosive process, with an impairment of bone formation by inhibition of the Wnt signaling pathway as a cause of lack of repair of erosions. MRI has demonstrated the importance of inflammation in the bone marrow compartment as a cause of periarticular osteopenia. The term osteoimmunology has evolved to highlight the association between cells and cytokines of the immune system and their relationship to bone metabolism in rheumatoid arthritis and other forms of chronic inflammatory arthritis.


Subject(s)
Arthritis, Rheumatoid/complications , Bone Diseases, Metabolic/etiology , Arthritis, Rheumatoid/immunology , Arthritis, Rheumatoid/physiopathology , Bone Diseases, Metabolic/immunology , Humans , Osteogenesis/physiology , Osteoporotic Fractures/etiology
12.
Ophthalmic Surg Lasers Imaging Retina ; 53(6): 310-316, 2022 06.
Article in English | MEDLINE | ID: mdl-35724373

ABSTRACT

BACKGROUND AND OBJECTIVE: The purpose of this study was to implement a clinical decision support tool (CDS) and assess its impact on adherence to 2016 American Academy of Ophthalmology (AAO) hydroxychloroquine dosing recommendations. PATIENTS AND METHODS: This retrospective, interventional study implemented an automated alert to calculate maximum daily hydroxychloroquine dose based on 2016 AAO recommendations and flag noncompliant orders. Prevalence of excessive dosing after CDS implementation was assessed. RESULTS: A total of 7,417 patients met inclusion criteria. After intervention, prevalence of excessive dosing decreased from 27.4% to 21.1% (P < .001) among all prescriptions and from 26.8% to 16.2% (P < .001) among new prescriptions. Daily doses exceeding 400 mg decreased from 0.8% to 0.02% (P < .001). Risk factors for excessive dosing included low weight (odds ratio, 75.6 [95% CI, 54.0 to 105.8]) and nonrheumatologist prescriber (odds ratio, 1.60 to 3.63; all P < .005). CONCLUSIONS: This study highlights the efficacy of a CDS in reducing excessive hydroxychloroquine dosing and improving adherence to AAO ophthalmic safety guidelines. [Ophthalmic Surg Lasers Imaging 2022;53:310-316.].


Subject(s)
Antirheumatic Agents , Ophthalmology , Antirheumatic Agents/adverse effects , Decision Making , Electronics , Humans , Hydroxychloroquine/adverse effects , Retrospective Studies , United States
14.
JBMR Plus ; 5(3): e10457, 2021 Mar.
Article in English | MEDLINE | ID: mdl-33778325

ABSTRACT

Despite the availability of various osteoporosis treatments, adherence remains suboptimal. One contributing factor may be patient experience with therapy. This US, multicenter, combined retrospective chart review and patient questionnaire study included postmenopausal women at high risk for fracture and is the first study to describe real-world patient experience with abaloparatide (ABL) injection. Eight geographically diverse secondary care sites in the United States participated (n = 193). Mean ± SD age was 67.4 ±8.62 years. Most patients (86%) were satisfied with the ABL regimen, especially with ease of preparation (82%), ease of storage (87%), and storage convenience (89%), an attribute 83% of the patients thought was important. The majority of patients reported complete satisfaction with the ABL regimen allowing for their ability to conduct daily activities (85%) and convenience to fit into their daily schedule (84%). All reported taking ABL as directed, by injection in the lower abdomen, and 83% of patients reported medium or high adherence. Patients were satisfied with the needle size (76% completely satisfied), and 93% reported never deliberately missing a dose. Although injecting medication (18%) and higher out-of-pocket costs (17%) were deemed the most bothersome attributes, the majority (69%) noted their healthcare team understands how osteoporosis impacts their lives. In multivariable analyses, ease of preparation (OR = 2.62; 95% CI, 1.01-6.81; p = 0.048) and fracture history (OR = 1.72; 95% CI, 1.03-2.86; p = 0.037) were significantly associated with overall satisfaction. Ease of preparation was a predictor of higher satisfaction with treatment convenience (coefficient = 13.60; 95% CI, 8.08-19.12; p = 0.00). Remembering to take the medication was a significant predictor of self-reported adherence (OR = 16.66; 95% CI, 3.30-84.24; p = 0.001). In conclusion, the majority of patients were satisfied with ABL and found it convenient/easy to prepare and store. High self-reported adherence may be associated with positive patient experience including ease of use and adequate support from healthcare providers. © 2020 The Authors. JBMR Plus published by Wiley Periodicals LLC. on behalf of American Society for Bone and Mineral Research.

15.
Rheumatol Adv Pract ; 4(2): rkaa046, 2020.
Article in English | MEDLINE | ID: mdl-33173849

ABSTRACT

OBJECTIVES: Patient-reported outcome measures (PROMs) can direct patient-centred care and increase patient satisfaction with the visit. The objective of this study was to assess the relationship between the collection of PROMs and visit satisfaction, as measured by the Clinician and Group Practice Consumer Assessment of Healthcare Providers and Systems (CG-CAHPS) survey. METHODS: An electronic platform for collection of patient-reported information was implemented in rheumatology clinics between August and September 2016. Adult patients were included in the study if they completed CG-CAHPS after an ambulatory visit. The pre-implementation cohort consisted of patients seen between January and June 2016; the post-implementation cohort consisted of patients seen between January and June 2017. The CG-CAHPS scores were compared between cohorts. Mixed effect models were constructed to identify predictors of visit satisfaction. RESULTS: Characteristics were similar between the 2117 pre- and 2380 post-implementation patients. Visit satisfaction was high in both cohorts but did not differ [odds ratio = 0.97 (95% CI: 0.79, 1.19)]. Predictors of improved satisfaction included being an established patient, being male, older age and reporting higher quality of life. However, sensitivity analyses in the post-implementation cohort suggested that implementing PROMs might convey benefits for new patients, in particular. CONCLUSION: Collection of PROMs had no effect on visit satisfaction in rheumatology clinics, although there might be benefits for new patients. These largely null findings might be attributable to high satisfaction levels in our cohorts or to lack of provider review of PROM data with patients. Further research is indicated to determine the impact of provider communication of PROM results to patients on different domains of visit satisfaction.

16.
Menopause ; 27(10): 1137-1142, 2020 10.
Article in English | MEDLINE | ID: mdl-32665529

ABSTRACT

OBJECTIVE: Fracture risk increases with age, but few studies focus on persons ≥80 years. In the ACTIVE trial, treatment with abaloparatide for 18 months reduced osteoporotic fracture risk and increased bone mineral density. These effects were maintained with 24 months alendronate treatment in ACTIVExtend. We postulated that similar improvements in bone mineral density and safety would be demonstrated in women ≥80 years. METHODS: Post hoc analyses of bone mineral density and fracture incidence in women with osteoporosis at high risk of fracture ≥80 years from ACTIVExtend. RESULTS: In total, 56 women aged ≥80 years at ACTIVE baseline entered the ACTIVExtend study; 46 of these completed the study. Mean age was 83.3 years; other baseline characteristics were similar. At the end of ACTIVE, bone mineral density increased at all sites for abaloparatide versus placebo. Bone mineral density increased in parallel in both groups during alendronate therapy (19 to 43 months) in ACTIVExtend. At month 43, mean percent change in bone mineral density from baseline was 17.2% abaloparatide/alendronate versus 8.6% placebo/alendronate (P < 0.0001) at the lumbar spine, 5.3% abaloparatide/alendronate versus 3.0% placebo/alendronate (P = 0.024) at the total hip, and 4.6% abaloparatide/alendronate versus 3.1% placebo/alendronate (P = 0.044) at the femoral neck. Fracture incidence was low and did not differ significantly between groups. Sequential treatment with abaloparatide followed by alendronate was well tolerated; the proportion of participants reporting adverse events was similar between groups. CONCLUSIONS: Sequential treatment with abaloparatide followed by alendronate (43 months follow-up) in this small subgroup of ACTIVExtend participants suggests abaloparatide is well tolerated and effective in women aged ≥80 years. : Video Summary:http://links.lww.com/MENO/A618.


Video Summary:http://links.lww.com/MENO/A618.


Subject(s)
Bone Density Conservation Agents , Osteoporosis, Postmenopausal , Osteoporosis , Aged, 80 and over , Alendronate/therapeutic use , Bone Density , Bone Density Conservation Agents/therapeutic use , Double-Blind Method , Female , Humans , Osteoporosis/drug therapy , Osteoporosis, Postmenopausal/drug therapy , Parathyroid Hormone-Related Protein
17.
Curr Opin Rheumatol ; 21(4): 380-5, 2009 Jul.
Article in English | MEDLINE | ID: mdl-19461517

ABSTRACT

PURPOSE OF REVIEW: To describe new agents for the treatment of osteoporosis, discuss a conceptual framework of agents that are antiresorptive or anabolic, and review pathways that affect bone turnover and steps in those pathways that are targets for new therapeutic agents. RECENT FINDINGS: Novel antiresorptive agents are being developed. Denosumab, a fully human mononoclonal antibody to receptor activator of nuclear factor kappa B ligand, has completed its major fracture trial. Assessment of odanacatib, an inhibitor of cathepsin K, an osteoclast enzyme required for resorption of bone matrix, is underway. Glucagon-like peptide 2 is an intestinal peptide that prevents the nocturnal rise in bone resorption. Anabolic agents act by stimulating new bone formation. Novel anabolic agents in development include antibodies that target molecules (sclerostin and Dkk1) involved in Wnt signaling, a pathway that regulates gene transcription of proteins that are important for osteoblast function. An antagonist to the calcium-sensing receptor and an activin receptor fusion protein, which functions as an activin antagonist, have shown promise as anabolic agents in early human trials. SUMMARY: This review discusses potential future advances in drug therapy for osteoporosis including novel antiresorptive and anabolic agents that may become available in the coming years.


Subject(s)
Anabolic Agents/pharmacology , Bone Density Conservation Agents/pharmacology , Bone and Bones/drug effects , Osteoporosis/drug therapy , Activins/antagonists & inhibitors , Activins/metabolism , Anabolic Agents/therapeutic use , Bone Density Conservation Agents/therapeutic use , Bone and Bones/metabolism , Bone and Bones/physiopathology , Cathepsin K , Cathepsins/antagonists & inhibitors , Cathepsins/metabolism , Glucagon-Like Peptide 2/pharmacology , Humans , Osteoporosis/metabolism , Osteoporosis/physiopathology , RANK Ligand/antagonists & inhibitors , RANK Ligand/metabolism , Wnt Proteins/drug effects , Wnt Proteins/metabolism
18.
Curr Rheumatol Rep ; 11(3): 169-76, 2009 Jul.
Article in English | MEDLINE | ID: mdl-19604460

ABSTRACT

Teriparatide (recombinant human parathyroid hormone ) is an anabolic agent approved for the treatment of patients at high risk for fracture. The Fracture Prevention Trial administered teriparatide to treatment-naïve patients, leading to its US Food and Drug Administration approval in 2002. Clinical trial data using antiresorptive agents administered before, during, and after any parathyroid hormone (PTH) therapy, as well as alternative PTH dosing, have provided additional insight yet raise fundamental questions about the most appropriate use of teriparatide. This article provides an update on teriparatide, focusing on its mechanism of action compared with other antiresorptive agents, indications, adverse effects, therapy duration, combination therapy, contraindications, and cost effectiveness.


Subject(s)
Bone Density Conservation Agents/therapeutic use , Fractures, Bone/prevention & control , Osteoporosis/drug therapy , Teriparatide/therapeutic use , Bone and Bones/drug effects , Bone and Bones/physiopathology , Clinical Trials as Topic , Compressive Strength/drug effects , Compressive Strength/physiology , Female , Fractures, Bone/etiology , Fractures, Bone/physiopathology , Humans , Male , Osteoporosis/complications , Osteoporosis/physiopathology , Recombinant Proteins/therapeutic use , Risk Factors
20.
Nat Clin Pract Rheumatol ; 5(1): 20-7, 2009 Jan.
Article in English | MEDLINE | ID: mdl-19098925

ABSTRACT

Osteoporosis is a worldwide health problem with a high prevalence. Agents for the treatment of osteoporosis are classified as either antiresorptive or anabolic. Antiresorptive agents work by inhibiting the activity of osteoclasts and, therefore, reducing bone resorption. Currently available antiresorptive agents include bisphosphonates, selective estrogen-receptor modulators, calcitonin and estrogen. Various novel antiresorptive agents are in development. Receptor activator of nuclear factor kappa B ligand is an important cytokine involved in osteoclast activation; denosumab, a fully human monoclonal antibody to this molecule, has finished a major fracture trial. Assessment is underway of odanacatib--an inhibitor of cathepsin K, which is an osteoclast enzyme required for resorption of bone matrix. Glucagon-like peptide 2 is being evaluated for the prevention of the nocturnal rise in bone resorption without affecting bone formation. Anabolic agents act by stimulating formation of new bone. The only anabolic agent currently available in the US is teriparatide--recombinant human parathyroid hormone (PTH)(1-34)--and recombinant human PTH(1-84) is available in Europe. PTH stimulates osteoblast function and bone formation. Novel anabolic agents in development include: antibodies such as sclerostin and dickkopf-1 that target molecules involved in Wnt signaling, a pathway that regulates gene transcription of proteins that are important for osteoblast function; an antagonist to the calcium-sensing receptor; and an activin receptor fusion protein, which functions as an activin antagonist and has shown promise as an anabolic agent in early human trials.


Subject(s)
Anabolic Agents/therapeutic use , Bone Density Conservation Agents/therapeutic use , Bone Resorption/prevention & control , Osteoporosis/drug therapy , Anabolic Agents/pharmacology , Bone Density Conservation Agents/pharmacology , Bone Remodeling/drug effects , Bone Remodeling/physiology , Bone Resorption/metabolism , Female , Humans , Male , Osteoporosis/metabolism , Receptors, Calcium-Sensing/drug effects , Receptors, Calcium-Sensing/metabolism , Signal Transduction/drug effects , Wnt Proteins/metabolism
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