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Serum progranulin levels are elevated in dermatomyositis patients with acute interstitial lung disease, predicting prognosis.

ABSTRACT: INTRODUCTION:Progranulin (PGRN), a pleiotropic growth factor, has emerged as an immunoregulatory molecule. Because the roles of PGRN in dermatomyositis (DM) are still unknown, we investigated whether serum PGRN levels are associated with disease activity and prognosis in DM patients, particularly in those with DM complicated with interstitial lung disease (ILD). METHODS:The serum levels of PGRN were measured by enzyme-linked immunosorbent assay in patients with DM (n=57; acute/subacute interstitial pneumonia (A/SIP): n=17, chronic interstitial pneumonia (CIP): n=24, without ILD: n=16), polymyositis (PM, n=21; including 6 with ILD) and normal healthy controls (NHCs, n=60). We assessed the correlation between the serum PGRN levels and the activity indexes of ILD or prognosis in DM patients with ILD. RESULTS:Serum PGRN levels were significantly higher in DM patients than in PM patients (P=0.0025) and in NHCs (P<0.0001). In DM patients, the levels were significantly higher in patients with A/SIP than in those with CIP (P<0.0001) or without ILD (P=0.0003). The serum PGRN levels in DM patients with ILD significantly correlated with serum ferritin (rS=0.77, P<0.0001), lactate dehydrogenase (rS=0.54, P=0.0003) and C-reactive protein (rS=0.48, P=0.0015) levels. Moreover, in DM patients with ILD, the cumulative survival rate for 6 months was significantly lower in the group with serum PGRN levels?200 ng/ml (67%) than in the group with serum PGRN levels<200 ng/ml (100%) (P=0.0009). CONCLUSIONS:Serum PGRN is associated with disease activity and prognosis of DM with ILD. PGRN may play a role in the pathogenesis of DM and could be a useful biomarker.

SUBMITTER: Tanaka A

PROVIDER: S-EPMC4354987 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature

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Serum progranulin levels are elevated in dermatomyositis patients with acute interstitial lung disease, predicting prognosis.

Tanaka Atsushi A Tsukamoto Hiroshi H Mitoma Hiroki H Kiyohara Chikako C Ueda Naoyasu N Ayano Masahiro M Ohta Shun-ichiro S Kimoto Yasutaka Y Akahoshi Mitsuteru M Arinobu Yojiro Y Niiro Hiroaki H Tada Yoshifumi Y Horiuchi Takahiko T Akashi Koichi K

Arthritis research & therapy 20150210

<h4>Introduction</h4>Progranulin (PGRN), a pleiotropic growth factor, has emerged as an immunoregulatory molecule. Because the roles of PGRN in dermatomyositis (DM) are still unknown, we investigated whether serum PGRN levels are associated with disease activity and prognosis in DM patients, particularly in those with DM complicated with interstitial lung disease (ILD).<h4>Methods</h4>The serum levels of PGRN were measured by enzyme-linked immunosorbent assay in patients with DM (n=57; acute/sub ...[more]

PMID: 25888887

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Project description:ObjectiveTo evaluate adrenomedullin mRNA levels in the peripheral blood mononuclear cells (PBMCs) of patients with dermatomyositis (DM) as well as their correlation with the severity of interstitial lung disease (ILD).MethodsA total of 41 DM patients and seven immune-mediated necrotizing myopathy (IMNM) patients were recruited, in addition to 21 healthy controls (HCs). The adrenomedullin mRNA levels in PBMCs were measured via quantitative reverse-transcription real-time polymerase chain reaction (qRT-PCR). The associations between adrenomedullin expression levels and major clinical, laboratory, pulmonary function parameters and the prognosis of patients with DM-related ILD (DM-ILD) were analyzed. Immunohistochemical analysis was performed on lung tissues of DM-ILD patients to determine adrenomedullin expression.ResultsAdrenomedullin mRNA levels in PBMCs were significantly higher in DM patients than in IMNM patients and HCs (p = 0.022 and p<0.001, respectively). Among DM patients, the levels were significantly higher in those with rapidly progressive ILD (RP-ILD) than in those with chronic ILD (p = 0.002) or without ILD (p < 0.001). The adrenomedullin mRNA levels in DM-ILD were positively correlated with serum ferritin (r =0.507, p =0.002), lactate dehydrogenase (LDH) (r =0.350, p =0.045), and lung visual analog scale (VAS) (r=0.392, p=0.021) and were negatively correlated with pulmonary function test parameters, including predicted forced vital capacity (FVC)% (r = -0.523, p = 0.025), forced expiratory volume in 1 s (FEV1)% (r = -0.539, p = 0.020), and diffusing capacity of carbon monoxide (DLco)% (r = -0.495, p = 0.036). Immunohistochemical analysis of adrenomedullin confirmed higher expression in the alveolar epithelial cells and macrophages of DM patients with RP-ILD. Among the DM patients with ILD, the six decedents exhibited higher adrenomedullin levels than the 28 survivors (p = 0.042). The cumulative survival rate was significantly lower (62.5% vs. 100%, P = 0.005) in patients with an adrenomedullin level > 0.053 than in those with a level <0.053.ConclusionsAdrenomedullin levels are upregulated in DM patients with RP-ILD and are associated with ILD severity and poor prognosis. Adrenomedullin may be a potential prognostic biomarker in DM patients with ILD, although need further investigation.

Project description:IntroductionThe identification of reliable prognostic factors is a crucial requirement for patients with IgA nephropathy (IgAN). Here, we explored the relationship between serum chloride levels and prognosis in patients with IgAN.MethodsWe recruited all patients with primary IgAN, as diagnosed by renal biopsy, between 1st January 2015 and 1st April 2019. Patients were divided two groups (high chloride group and low chloride group) based on the best cut-off values from survival receiver operating characteristic (ROC) curves. The baseline clinicopathological characteristics of two groups were then compared. Cox proportional hazard models were used to determine the prognostic value of serum chloride levels in patients with IgAN. Finally, we screened reliable prognostic indicators and built a clinical prediction model and validated the performance of the model.ResultsCompared with patients in the high chloride group, patients in the low chloride group had significantly lower levels of 24-hour urinary total protein (24 h-UTP), serum creatinine (sCr), and higher levels of hemoglobin (Hb), albumin (all p < 0.05), and less proportion of Oxford classification grade E1 (endothelial cell proliferation) and T2 (renal tubule atrophy or renal interstitial fibrosis). Cox analysis revealed that serum chloride level ≥ 105.4 mmol/L was a significant and independent risk factor for prognosis in patients with IgAN (p < 0.05). Serum chloride, sCr, T, hypertension, and Hb were used to generate a predictive model for prognosis. Thec-indices of our predictive model were 0.80, 0.86, and 0.78, for 1, 2, and 3 years, respectively; Brier scores were 0.06, 0.09, and 0.16, respectively.ConclusionsA serum chloride level ≥ 105.4 mmol/l was identified as a significant and independent risk factor for the prognosis of patients with IgAN. A predictive prognosis model was generated using serum chloride, sCr, T, hypertension, and Hb; this model exhibited a good predictive effect.

Dataset Information

Serum progranulin levels are elevated in dermatomyositis patients with acute interstitial lung disease, predicting prognosis.

Publications

Serum progranulin levels are elevated in dermatomyositis patients with acute interstitial lung disease, predicting prognosis.

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