<?xml version="1.0" encoding="utf-8"?>
<recommendedContent xmlns="http://api.mspoke.com">
    <recommendedItem id="20100101_19_439"
                     title="Heart Often Affected in Churg-Strauss (CME/CE)"
                     score="0.014"
                     href="http://www.medpagetoday.com/Rheumatology/GeneralRheumatology/tb/18353?impressionId=1265785754388"
                     
      &lt;p&gt;Cardiac involvement is common in patients with Churg-Strauss syndrome, even when their vasculitis is in clinical remission, a Dutch study found.&lt;/p&gt;
&lt;p&gt;Cardiac MRI detected abnormalities in 62% of patients with this rare, systemic disorder but in only 3% of matched controls (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.001), according to Robert M. Dennert, MD, of Maastricht University in the Netherlands, and colleagues.&lt;/p&gt;
&lt;p&gt;Yet only 26% of the patients had clinical symptoms suggesting cardiac involvement, the researchers reported in February&apos;s &lt;em&gt;Arthritis &amp;amp; Rheumatism.&lt;/em&gt;&lt;/p&gt;
&lt;p&gt;Cardiac involvement is an important predictor of poor outcome in Churg-Strauss syndrome, with approximately half of the associated mortality being heart-related. Myocardial damage typically results from eosinophilic infiltration and granuloma formation.&lt;/p&gt;
&lt;p&gt;However, the cardiac manifestations are often subclinical. They remain undiagnosed, and the exact incidence is unclear.&lt;/p&gt;
&lt;p&gt;So Dennert and colleagues enrolled 32 patients with confirmed Churg-Strauss syndrome who were in complete clinical remission, performing detailed imaging assessments to determine the frequency and extent of heart involvement.&lt;/p&gt;
&lt;p&gt;About two-thirds were men. The mean age was 61 years, and disease duration was slightly over six years.&lt;/p&gt;
&lt;p&gt;A total of 41% had antineutrophil cytoplasmic antibodies (ANCA), and most were on maintenance steroids or immunosuppressants.&lt;/p&gt;
&lt;p&gt;On EKG, major abnormalities (atrial fibrillation and conduction disturbances) were detected in only 13% of patients. Minor abnormalities such as T wave abnormalities were seen in 50% of patients and in one control subject.&lt;/p&gt;
&lt;p&gt;Echocardiography identified abnormalities in 50% of patients and in 3% of controls (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.001). These included wall motion and valvular abnormalities, pericardial effusion, and pulmonary hypertension.&lt;/p&gt;
&lt;p&gt;In the 62% of patients whose MRIs revealed abnormalities, findings included fibrosis, inflammation, wall motion and valvular abnormalities, pericardial effusion, and obliterated right ventricle.&lt;/p&gt;
&lt;p&gt;Previous reports had suggested that ANCA positivity in Churg-Strauss syndrome was more often associated with renal disease and peripheral neuropathy, while ANCA negativity was associated with fever and heart involvement.&lt;/p&gt;
&lt;p&gt;In this cohort, 74% of ANCA-negative patients had cardiac involvement, and in 64%, these were wall motion disturbances.&lt;/p&gt;
&lt;p&gt;In comparison, only 23% of ANCA-positive patients had heart involvement.&lt;/p&gt;
&lt;p&gt;Defects were identified with echocardiography or MRI in 88% of patients who had clinical symptoms, and in all who had major EKG abnormalities.&lt;/p&gt;
&lt;p&gt;But in the absence of symptoms and even with a normal EKG, abnormalities could still be detected on echocardiography or MRI in almost 40% of patients, according to the investigators.&lt;/p&gt;
&lt;p&gt;&quot;We therefore recommend that the evaluation for cardiac involvement in patients with [Churg-Strauss syndrome] should include not only detailed history of cardiac symptoms and EKG, but also imaging with echocardiography or cardiac MRI,&quot; they stated.&lt;/p&gt;
&lt;p&gt;The high prevalence of heart abnormalities could not be attributed to concomitant heart disease such as coronary artery disease or hypertension, because the prevalence of these diseases among patients was comparable to that in controls.&lt;/p&gt;
&lt;p&gt;Churg-Strauss syndrome typically develops in three phases, beginning with asthma, followed by peripheral and tissue eosinophilia accompanied by pulmonary infiltrates, and finally the systemic small-vessel vasculitis.&lt;/p&gt;
&lt;p&gt;During this late phase the vasculitic lesions in the coronary vessels and myocardium can lead to myocardial infarction, heart failure, and cardiac tamponade.&lt;/p&gt;
&lt;p&gt;Studies have shown that long-term treatment with immunosuppressive drugs can improve survival and resolve the cardiac abnormalities, so early diagnosis is needed.&lt;/p&gt;
&lt;p&gt;The authors acknowledged that their study was cross-sectional, and that a longitudinal study could have provided more detailed data.&lt;/p&gt;
&lt;p&gt;Nonetheless, the study revealed a high incidence of cardiac involvement, which was often unrecognized, and they concluded that a multidisciplinary approach to management therefore should include a cardiologist.&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The study was funded by the Netherlands Heart Foundation and the Dutch Organization for Scientific Research.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_438"
                     title="Rituximab Shows Promise in Scleroderma (CME/CE)"
                     score="0.014"
                     href="http://www.medpagetoday.com/Rheumatology/GeneralRheumatology/tb/18352?impressionId=1265785754388"
                     
      &lt;p&gt;Rituximab (Rituxan) improved lung function in patients with scleroderma, a small proof-of-principle study found.&lt;/p&gt;
&lt;p&gt;At one year, patients randomized to receive rituximab had a median 10.25% increase in forced vital capacity (FVC) compared with baseline, while those who received standard treatment had a deterioration of 5.04% (&lt;em&gt;P&lt;/em&gt;=0.002), according to Dimitrios Daoussis, MD, and colleagues from the University of Patras in Greece.&lt;/p&gt;
&lt;p&gt;There also was a significant 19.46% increase in diffusing capacity of carbon monoxide (DL&lt;sub&gt;co&lt;/sub&gt;) in the rituximab-treated patients, while the controls showed deterioration of 7.5% (&lt;em&gt;P&lt;/em&gt;=0.023), the researchers reported in the February issue of &lt;em&gt;Rheumatology&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;Interstitial lung disease is a common manifestation of diffuse scleroderma and represents the disease component that dictates prognosis because it can be progressive and typically responds poorly to treatment. Animal and human studies have suggested a possible pathogenic role for B cells in the disease.&lt;/p&gt;
&lt;p&gt;There have been a few reports of clinical and histologic improvements in scleroderma and in graft-versus-host disease (which shares some features with scleroderma) after treatment with the B-cell depleting monoclonal antibody rituximab.&lt;/p&gt;
&lt;p&gt;These encouraging early findings led Daoussis and colleagues to undertake an open-label, controlled study that included 14 patients with diffuse disease.&lt;/p&gt;
&lt;p&gt;Median age was 55 and mean disease duration was seven years.&lt;/p&gt;
&lt;p&gt;All patients continued their standard medications, which included various agents such as prednisone, bosentan (Tracleer), mycophenolate mofetil (CellCept), and cyclophosphamide.&lt;/p&gt;
&lt;p&gt;Those randomized to rituximab treatment also underwent four weekly pulses of the drug (375 mg/m&lt;sup&gt;2&lt;/sup&gt;) at baseline and six months later.&lt;/p&gt;
&lt;p&gt;By one year, the mean FVC in the rituximab group had risen from 68.13% of normal predicted value based on age, sex, and height, to 75.63% (&lt;em&gt;P&lt;/em&gt;=0.0018), while FVC in the control group fell nonsignificantly from 86% of normal to 81.67%.&lt;/p&gt;
&lt;p&gt;In the rituximab group, DL&lt;sub&gt;co&lt;/sub&gt; increased from a mean of 52.25% of normal at baseline to 62% (&lt;em&gt;P&lt;/em&gt;=0.017) at one year, while the controls decreased nonsignificantly from 65.33% to 60.17%.&lt;/p&gt;
&lt;p&gt;None of the patients treated with rituximab experienced worsening of FVC or DL&lt;sub&gt;co&lt;/sub&gt;, whereas lung function deteriorated in five controls.&lt;/p&gt;
&lt;p&gt;&quot;We should note, however, that patients in the control group tended to have more early disease and better lung function parameters (although not statistically different from the [rituximab] group) making them more likely to deteriorate over the time of the study,&quot; the investigators commented.&lt;/p&gt;
&lt;p&gt;Skin manifestations of the disease also showed improvements in the rituximab group. Skin thickening, as measured by the Modified Rodnan Skin Score, improved by 39.25% in the rituximab group and by 20.80% in the control group, a difference that was not statistically significant.&lt;/p&gt;
&lt;p&gt;Skin fibrosis also improved by a median of 38.33%, while it worsened by 5.23% in controls.&lt;/p&gt;
&lt;p&gt;Histologic improvement was seen in four of the rituximab-treated patients, corresponding with clinical benefits. One patient in the active treatment group had a significant reduction of fibrosis in both the papillary and reticular dermis, accompanied by an almost complete resolution of skin lesions.&lt;/p&gt;
&lt;p&gt;Improvement in skin fibrosis was most common in patients who had evidence of B-cell depletion in the skin.&lt;/p&gt;
&lt;p&gt;Overall function, as evaluated by the Health Assessment Questionnaire, improved from a median baseline score of 0.687 to 0.312 at one year (&lt;em&gt;P&lt;/em&gt;=0.03), while no change was seen in controls.&lt;/p&gt;
&lt;p&gt;The pathogenesis of scleroderma is poorly understood, according to the authors, but this study adds support to a possible role for B cells.&lt;/p&gt;
&lt;p&gt;In addition, rituximab indirectly targets T cells, which also are thought to be implicated.&lt;/p&gt;
&lt;p&gt;The authors noted potential limitations, including the study&apos;s small size and the fact that most patients had longstanding disease, had been treated with multiple immunosuppressive agents in the past, and were receiving concurrent therapies during the study.&lt;/p&gt;
&lt;p&gt;&quot;This is a proof-of-principle study that was performed in order to obtain preliminary data regarding the effect of [rituximab] on a limited number of patients,&quot; the authors wrote.&lt;/p&gt;
&lt;p&gt;&quot;Our data could serve as a good starting point for the design of larger scale, multicenter studies with longer evaluation periods and especially in earlier stages of the disease,&quot; they concluded.&lt;/p&gt;
&lt;p&gt;In an accompanying editorial, Robert W. Simms, MD, and Robert Lafyatis, MD, of Boston University, echoed concerns about the small number of patients and the lack of blinding in the study.&lt;/p&gt;
&lt;p&gt;&quot;One cannot...on the basis of this study, recommend rituximab in the routine clinical care of patients with scleroderma,&quot; the editorialists wrote.&lt;/p&gt;
&lt;p&gt;The findings will need to be replicated in a multicenter randomized trial, but &quot;do provide some hope that B-cell depletion might enhance the currently restricted therapeutic armamentarium of this disease.&quot;&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The study was funded by the Hellenic Rheumatology Society.&lt;/p&gt;&lt;p&gt;Funding to pay Open Access publication charges was provided by Roche Hellas.&lt;/p&gt;&lt;p&gt;Authors and editorialists declared to conflicts of interest.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_411"
                     title="Older Women with Gout at Risk of MI (CME/CE)"
                     score="0.013"
                     href="http://www.medpagetoday.com/Cardiology/MyocardialInfarction/tb/18319?impressionId=1265785754388"
                     
      &lt;p&gt;Elderly women with gout are at increased risk of acute myocardial infarction (MI), even more so than men with this painful arthritis, a population-based study found.&lt;/p&gt;
&lt;p&gt;After adjusting for age, comorbidities such as hypertension and diabetes, and prescription drug use, the relative risk of MI among women ages 65 and older was 1.39 (95% CI 1.20 to 1.61), according to Mary A. De Vera of the Arthritis Research Centre of Canada in Vancouver, and colleagues.&lt;/p&gt;
&lt;p&gt;In comparison, the multivariate relative risk among men was 1.11 (95% CI 0.99 to 1.23, &lt;em&gt;P&lt;/em&gt;=0.003 for interaction), the researchers reported online in the &lt;em&gt;Annals of the Rheumatic Diseases&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;Men with gout are known to be at higher risk for coronary heart disease and acute MI, but corresponding data for women were sparse.&lt;/p&gt;
&lt;p&gt;So De Vera and colleagues conducted a cohort study using the British Columbia Linked Health Database, comparing the incidence rates of MI between 9,642 patients with gout and 48,210 matched controls with no history of ischemic heart disease.&lt;/p&gt;
&lt;p&gt;A total of 3,890 of the cases were women, as were 19,450 of the controls.&lt;/p&gt;
&lt;p&gt;The gout incidence rate in women ages 65 to 85 years was 2.5 per 1,000 person-years, and 2.9 per 1,000 person-years in those ages 85 and higher.&lt;/p&gt;
&lt;p&gt;The rates in men of the corresponding ages were 5.7 and 6.5 per 1,000 person-years.&lt;/p&gt;
&lt;p&gt;Hospital records indicated that the incidence rates of acute MI among women and men were 6.7 and 10.7 per 1,000 person-years, respectively.&lt;/p&gt;
&lt;p&gt;During a median of seven years&apos; follow-up there were 3,268 incident cases of MI, including 996 in women.&lt;/p&gt;
&lt;p&gt;In unadjusted analysis, the relative risk of acute MI among women with gout was 1.67 (95% CI 1.45 to 1.93), while that for men with gout was 1.19 (95% CI 1.07 to 1.32).&lt;/p&gt;
&lt;p&gt;Multivariate analysis determined that the relative risk for nonfatal MI in women was 1.41 (95% CI 1.19 to 1.67), while that in men was 1.11 (95% CI 0.98 to 1.25, &lt;em&gt;P&lt;/em&gt;=0.005 for interaction).&lt;/p&gt;
&lt;p&gt;The gender difference did not show up in fatal events, however. The relative risk for fatal MI was 1.33 in women (95% CI 0.99 to 1.78) and 1.10 in men (95% CI 0.88 to 1.38, &lt;em&gt;P&lt;/em&gt;=0.30 for interaction).&lt;/p&gt;
&lt;p&gt;Overall, there was a 39% increased risk for MI among women with gout, an association that was independent of age, comorbidities, and use of prescription drugs including nonsteroidal anti-inflammatories, diuretics, statins, anticoagulants, and aspirin.&lt;/p&gt;
&lt;p&gt;The association was significantly stronger than for men, according to the researchers.&lt;/p&gt;
&lt;p&gt;These gender differences may relate to serum uric acid levels and metabolism. Levels in men are about 1 mg/dL higher, although levels do rise in women at menopause.&lt;/p&gt;
&lt;p&gt;&quot;Thus, the relative physiological impact of having gout or a certain level of hyperuricemia may be stronger among women than men,&quot; the authors wrote.&lt;/p&gt;
&lt;p&gt;Possible mechanisms for the contribution of hyperuricemia to cardiovascular disease include vascular smooth muscle cell proliferation and inflammation, as well as platelet adhesiveness and aggregation.&lt;/p&gt;
&lt;p&gt;&quot;Inflammation associated with gout may also have a role in potential mechanisms, including promotion of atherogenesis and thrombogenesis, similar to other inflammatory arthritides associated with cardiovascular disease,&quot; the investigators noted.&lt;/p&gt;
&lt;p&gt;A strength of the study was its population-based design, which makes its findings generalizable. Limitations include the potential for misclassification of diagnosis because of the use of diagnostic codes, and the inability to adjust for lifestyle factors such as smoking.&lt;/p&gt;
&lt;p&gt;Nonetheless, according to the investigators, &quot;These findings provide support for the aggressive management of cardiovascular risk factors for male and female patients with gout.&quot;&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The study was partly funded by the National Institute of Health.&lt;/p&gt;&lt;p&gt;The authors have received support from the Canadian Arthritis Network/The Arthritis Society, and one disclosed receiving research funding and honoraria from TAP Pharmaceuticals and Savient.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_463"
                     title="AAPM: Online Program Helps Manage Pain (CME/CE)"
                     score="0.011"
                     href="http://www.medpagetoday.com/MeetingCoverage/AAPM/tb/18393?impressionId=1265785754388"
                     
      &lt;p&gt;SAN ANTONIO  --  A personalized, online self-management program helped patients with pain syndromes improve coping skills and reduce stress and depression in two studies reported here.&lt;/p&gt;
&lt;p&gt;Patients randomized to the self-management program demonstrated significant improvement in multiple social, emotional, and behavioral outcomes after six months (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.05 to &lt;em&gt;P&lt;/em&gt;&amp;lt;0.01). Improvement in some parameters occurred within one month. A control group that was not exposed to the program showed no significant improvement.&lt;/p&gt;
&lt;p&gt;&quot;Our goal is to help people communicate better with providers, understand better how they can use social support, understand the comorbid conditions, like anxiety and depression, and develop cognitive skills to help get them through their pain episodes,&quot; said Emil Chiauzzi, PhD, of Inflexxion, the Newton, Mass. company that developed the program.&lt;/p&gt;
&lt;p&gt;Although the studies involved patients with migraine or low-back pain, programs are being developed for other types of pain condition, including several forms of neuropathic pain.&lt;/p&gt;
&lt;p&gt;The online program, demonstrated at &lt;a href=&quot;http://www.painACTION.com&quot; mce_href=&quot;http://www.painACTION.com&quot; target=&quot;_blank&quot;&gt;www.painACTION.com&lt;/a&gt;, employs patient-specific information to generate individualized self-management strategies.&lt;/p&gt;
&lt;p&gt;Patient responses to assessments are analyzed by a &quot;recommendation engine,&quot; which produces content recommendations designed to address each patient&apos;s informational and self-management needs.&lt;/p&gt;
&lt;p&gt;Elements on the Web site include multimedia education units, a pain inventory, interactive tools that provide information based on patient-provider communication, and medication risk management.&lt;/p&gt;
&lt;p&gt;&quot;The content on the Web site is focused on teaching people practical skills to manage the behavioral side of pain,&quot; Jonas Bromberg, PsyD, also of Inflexxion, said in an interview.&lt;/p&gt;
&lt;p&gt;Bromberg presented results of a randomized study involving 210 patients, all of whom met International Headache Society diagnostic criteria for migraine, with or without aura.&lt;/p&gt;
&lt;p&gt;Patients assigned to the online program completed at least eight 30-minute session during the first month of the study and at least five more 30-minute sessions during the five-month follow-up period. Patients in the control group continued to receive usual care without exposure to the Web site.&lt;/p&gt;
&lt;p&gt;Participants assigned to the online program had a minimum set of requirements for each session, which were provided at log-in. Follow-up assessments occurred at one, three, and six months.&lt;/p&gt;
&lt;p&gt;The two groups were balanced with respect to sex and headache frequency and severity, the researchers said.&lt;/p&gt;
&lt;p&gt;Bromberg reported that patients assigned to the self-management program demonstrated significant improvement in: &lt;ul&gt; &lt;li&gt;Headache self-efficacy (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.01 compared with baseline)&lt;/li&gt; &lt;li&gt;Use of relaxation (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.05 to &lt;em&gt;P&lt;/em&gt;&amp;lt;0.01)&lt;/li&gt; &lt;li&gt;Use of social support (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.01)&lt;/li&gt; &lt;li&gt;Pain catastrophizing (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.01)&lt;/li&gt; &lt;li&gt;Depression (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.05 to &lt;em&gt;P&lt;/em&gt;&amp;lt;0.01)&lt;/li&gt; &lt;li&gt;Stress (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.01)&lt;/li&gt; &lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;Chiauzzi presented results from a randomized study of 209 patients with low-back pain. The design was similar to that of the migraine study, except results were analyzed for between-group differences.&lt;/p&gt;
&lt;p&gt;The results showed significant improvement in the study group versus control group with respect to: &lt;ul&gt; &lt;li&gt;Stress (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.01)&lt;/li&gt; &lt;li&gt;Coping (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.01)&lt;/li&gt; &lt;li&gt;Social supports (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.05)&lt;/li&gt; &lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;The data showed significant effects of both treatment (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.01) and time (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.01) favoring the Web site versus control. Chiauzzi said patients assigned to the Web site had greater mean improvement at posttest, three months, and six months.&lt;/p&gt;
&lt;p&gt;Qualitative analysis suggested that Web site participants had clinically meaningful improvement in depression, anxiety, and stress.&lt;/p&gt;
&lt;p&gt;Additionally, patients in the self-management program reported a 12.3% decrease in pain from baseline, versus 7% in the control group.&lt;/p&gt;
&lt;p&gt;Access to the Web site did not improve physical functioning.&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The studies were funded by the National Institutes of Health.&lt;/p&gt;&lt;p&gt;Chiauzzi and Bromberg are employees of Inflexxion, developer of the online program.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_455"
                     title="Low Vitamin D Linked to Hip OA (CME/CE)"
                     score="0.011"
                     href="http://www.medpagetoday.com/Rheumatology/Arthritis/tb/18379?impressionId=1265785754388"
                     
      &lt;p&gt;Elderly men with low serum levels of vitamin D are at increased risk for developing hip osteoarthritis, a prospective cohort study found.&lt;/p&gt;
&lt;p&gt;Men whose levels of 25-hydroxyvitamin (OH)D were between 15.1 to 30 ng/mL had twice the likelihood of prevalent radiographic hip osteoarthritis than those whose levels were normal (OR 2.19, 95% CI 1.21 to 3.97), according to R. Krishna Chaganti, MD, of the University of California at San Francisco, and colleagues.&lt;/p&gt;
&lt;p&gt;Conversely, after adjusting for age, season at blood draw, and clinic site, higher vitamin D levels were associated with a lower prevalence of hip osteoarthritis (OR 1.39 per 1 SD decrease in 25(OH)D level, 95% CI 1.11 to 1.74), the researchers reported in the February issue of &lt;em&gt;Arthritis &amp;amp; Rheumatism&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;Because the role vitamin D may play in the pathogenesis and progression of osteoarthritis is unclear, Chaganti and colleagues analyzed data from the Osteoporotic Fractures in Men Study, which enrolled a large cohort of elderly men between 2000 and 2002 from six centers across the U.S.&lt;/p&gt;
&lt;p&gt;A total of 1,104 men whose mean age was 77.2 years had baseline measurements of serum vitamin D, and about 4.5 years later pelvic radiographs were obtained.&lt;/p&gt;
&lt;p&gt;Radiographs were scored to reflect joint space narrowing, osteophyte formation, cysts, subchondral sclerosis, and femoral head deformity.&lt;/p&gt;
&lt;p&gt;Vitamin D levels were categorized as deficiency (&amp;#8804;15 ng/mL), insufficiency (15.1 to 30 ng/mL), and sufficiency (&amp;gt;30 ng/mL).&lt;/p&gt;
&lt;p&gt;Mean vitamin D level was 23.38 ng/mL in men who had radiographic hip osteoarthritis, compared with 26.04 ng/mL in men without radiographic abnormalities (&lt;em&gt;P&lt;/em&gt;=0.0002).&lt;/p&gt;
&lt;p&gt;Men with hip osteoarthritis had a higher prevalence of both vitamin D insufficiency (77% versus 65%, &lt;em&gt;P&lt;/em&gt;=0.002) and deficiency (10.2% versus 7.5%, &lt;em&gt;P&lt;/em&gt;=0.012).&lt;/p&gt;
&lt;p&gt;Moreover, they had slower six-meter walking speed (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.0001) and reported more hip pain (&lt;em&gt;P&lt;/em&gt;=0.0001).&lt;/p&gt;
&lt;p&gt;Men who were vitamin D deficient also tended to have an increased likelihood of hip osteoarthritis (OR 1.99, 95% CI 0.83 to 4.74), but after adjustment in multivariate models, statistical significance was lost with this level of the vitamin.&lt;/p&gt;
&lt;p&gt;&quot;The association of low 25(OH)D levels with prevalent radiographic hip [osteoarthritis] underscores the potentially important role of vitamin D in the pathogenesis of [osteoarthritis]. Vitamin D metabolites have been found to be associated with the regulation of the Wnt pathway, products of which play important roles in the development and maintenance of bone and cartilage,&quot; the investigators explained.&lt;/p&gt;
&lt;p&gt;Furthermore, in vitro studies have suggested that serum levels of 25-hydroxyvitamin D&lt;sub&gt;3&lt;/sub&gt; can affect the ratio of RANKL to osteoprotegerin and thereby influence bone deterioration and repair.&lt;/p&gt;
&lt;p&gt;Previous investigations have yielded conflicting results. One study found that low levels of vitamin D were not associated with worsening of knee osteoarthritis, as reflected in loss of articular cartilage on MRI.&lt;/p&gt;
&lt;p&gt;Another study, however, linked knee osteoarthritis with low vitamin D levels, particularly in patients who also had decreased bone mineral density in the lumbar spine.&lt;/p&gt;
&lt;p&gt;&quot;Vitamin D influences the mineralization of bone matrix, and low serum levels of vitamin D may result in poorly mineralized bone that might alter forces across the joint and reduce joint deterioration,&quot; the authors suggested.&lt;/p&gt;
&lt;p&gt;On the other hand, low levels may interfere with chondrocyte metabolism and thereby increase degeneration.&lt;/p&gt;
&lt;p&gt;Further studies will be needed to more fully clarify the effects of the vitamin on the development and progression of osteoarthritis, the investigators cautioned.&lt;/p&gt;
&lt;p&gt;Strengths of the study include the large cohort of participants, careful classification of radiographic osteoarthritis, and reliance on the gold standard of vitamin D measurement, the 25(OH)D level.&lt;/p&gt;
&lt;p&gt;Limitations include the cross-sectional design, precluding the inference of causality, and the gap in time between measurement of serum vitamin D and radiography.&lt;/p&gt;
&lt;p&gt;The authors concluded that therapeutic interventions to increase vitamin D serum levels in the elderly &quot;are warranted,&quot; with the goal of improving skeletal health in this vulnerable age group.&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The study was supported by the National Institute of Arthritis and Musculoskeletal and Skin Diseases, the National Institute on Aging, the National Center for Research Resources, and the NIH Roadmap for Medical Research.&lt;/p&gt;&lt;p&gt;The lead author was supported by a grant from the American College of Rheumatology Research and Education Foundation.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
</recommendedContent>