scholarly journals Surfactant protein D: a useful marker for differentiation of drug-induced pneumonia and bacterial pneumonia

Pneumonia ◽  
2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Yuko Waseda ◽  
Masahide Yasui ◽  
Kousuke Kurokawa ◽  
Ryo Chikazawa ◽  
Toshihiro Takeda ◽  
...  
Keyword(s):  
Bacterial Pneumonia ◽  
Surfactant Protein ◽  
Serum Biomarkers ◽  
Surfactant Protein D ◽  
C Reactive Protein ◽  
Drug Induced ◽  
Reactive Protein ◽  
Causative Drug ◽  
Study Results ◽  
Minocycline Hydrochloride

Abstract Background Drug-induced pneumonia (d-pneumonia) and bacterial pneumonia (b-pneumonia) are often difficult to differentiate; therefore, this study examined the possibility of differentiating them using serum biomarkers. Methods The study included 22 and 16 patients diagnosed with b- and d-pneumonia, respectively, at our institution or affiliated institutions. For d-pneumonia, the causative drug was minocycline hydrochloride in four patients, gefitinib in two patients, nivolumab in two patients, pembrolizumab in two patients, sulfasalazine in two patients, loxoprofen in one patient, Bouiougitou in one patient, edoxaban tosilate hydrate in one patient, and abemaciclib in one patient. White blood cell (WBC), C-reactive protein (CRP), Krebs von den Lungen-6 (KL-6), surfactant protein (SP)-D, and SP-A levels were measured in each patient and compared between the groups. Results Significant differences were noted in the WBC and SP-D levels between the two groups (P < 0.05, P < 0.001), but not in the CRP, KL-6, or SP-A levels. Conclusion The study results suggest that SP-D is a useful marker for differentiating b-pneumonia and d-pneumonia.

scholarly journals Histone H4 potentiates neutrophil inflammatory responses to influenza A virus: Down-modulation by H4 binding to C-reactive protein and Surfactant protein D

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0247605
Author(s):  
I-Ni Hsieh ◽  
Mitchell White ◽  
Marloes Hoeksema ◽  
Xavier Deluna ◽  
Kevan Hartshorn
Keyword(s):  
Influenza A Virus ◽  
Respiratory Burst ◽  
Influenza A ◽  
Inflammatory Responses ◽  
Surfactant Protein ◽  
Surfactant Protein D ◽  
Histone H4 ◽  
C Reactive Protein ◽  
Reactive Protein

Neutrophils participate in the early phase of the innate response to uncomplicated influenza A virus (IAV) infection but also are a major component in later stages of severe IAV or COVID 19 infection where neutrophil extracellular traps (NETs) and associated cell free histones are highly pro-inflammatory. It is likely that IAV interacts with histones during infection. We show that histone H4 binds to IAV and aggregates viral particles. In addition, histone H4 markedly potentiates IAV induced neutrophil respiratory burst responses. Prior studies have shown reactive oxidants to be detrimental during severe IAV infection. C reactive protein (CRP) and surfactant protein D (SP-D) rise during IAV infection. We now show that both of these innate immune proteins bind to histone H4 and significantly down regulate respiratory burst and other responses to histone H4. Isolated constructs composed only of the neck and carbohydrate recognition domain of SP-D also bind to histone H4 and partially limit neutrophil responses to it. These studies indicate that complexes formed of histones and IAV are a potent neutrophil activating stimulus. This finding could account for excess inflammation during IAV or other severe viral infections. The ability of CRP and SP-D to bind to histone H4 may be part of a protective response against excessive inflammation in vivo.

scholarly journals Serum C-Reactive Protein and Interleukin-6 Levels as Biomarkers for Disease Severity and Clinical Outcomes in Patients with Idiopathic Granulomatous Mastitis

2021 ◽  
Vol 10 (10) ◽  
pp. 2077
Author(s):  
Yi-Min Huang ◽  
Chiao Lo ◽  
Chiao-Feng Cheng ◽  
Cheng-Hsun Lu ◽  
Song-Chou Hsieh ◽  
...  
Keyword(s):  
Disease Severity ◽  
Severe Disease ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Serum Biomarkers ◽  
Healthy Controls ◽  
Granulomatous Mastitis ◽  
C Reactive Protein ◽  
Idiopathic Granulomatous Mastitis ◽  
Reactive Protein

Idiopathic granulomatous mastitis (IGM) is a rare inflammatory breast disease mimicking breast cancer. Limited research has been conducted on the application of serum biomarkers. This study aims to investigate the association of serum biomarkers with disease severity in patients with IGM. From November 2011 to March 2020, medical records of patients with IGM were reviewed. Serum cytokine levels were measured in patients and healthy controls between July 2018 and March 2020. A total of 41 patients with histologically proven IGM were found. Serum interleukin (IL)-6 level was significantly higher in patients with IGM (n = 11) than healthy controls (n = 7). Serum IL-6 and C-reactive protein (CRP) levels were significantly higher in patients with severe disease than mild and moderate disease. Serum IL-6 (Spearman’s ρ = 0.855; p < 0.001) and CRP (Spearman’s ρ = 0.838; p = 0.001) levels were associated with time to resolution. A higher serum CRP level was associated with a longer time to resolution (B = 0.322; p < 0.001) in multiple linear regression analysis. Serum IL-6 and CRP levels can be used as biomarkers for the evaluation of disease severity in IGM. IL-6 may play a crucial role in the immunopathology of IGM.

Disparate effects of two phosphatidylcholine binding proteins, C-reactive protein and surfactant protein A, on pulmonary surfactant structure and function

2004 ◽  
Vol 287 (6) ◽  
pp. L1145-L1153 ◽  
Author(s):  
Kaushik Nag ◽  
Karina Rodriguez-Capote ◽  
Amiya Kumar Panda ◽  
Laura Frederick ◽  
Stephen A. Hearn ◽  
...  
Keyword(s):  
Binding Proteins ◽  
Amorphous Material ◽  
Protein A ◽  
Surfactant Protein ◽  
Water Soluble ◽  
Surfactant Protein A ◽  
Surface Films ◽  
Inhibitory Effects ◽  
C Reactive Protein ◽  
Reactive Protein

C-reactive protein (CRP) and surfactant protein A (SP-A) are phosphatidylcholine (PC) binding proteins that function in the innate host defense system. We examined the effects of CRP and SP-A on the surface activity of bovine lipid extract surfactant (BLES), a clinically applied modified natural surfactant. CRP inhibited BLES adsorption to form a surface-active film and the film's ability to lower surface tension (γ) to low values near 0 mN/m during surface area reduction. The inhibitory effects of CRP were reversed by phosphorylcholine, a water-soluble CRP ligand. SP-A enhanced BLES adsorption and its ability to lower γ to low values. Small amounts of SP-A blocked the inhibitory effects of CRP. Electron microscopy showed CRP has little effect on the lipid structure of BLES. SP-A altered BLES multilamellar vesicular structure by generating large, loose bilayer structures that were separated by a fuzzy amorphous material, likely SP-A. These studies indicate that although SP-A and CRP both bind PC, there is a difference in the manner in which they interact with surface films.

Abstract P002: Evidence For Smoking Dependent Genetic Effects on C-reactive Protein Levels in a Multi-ethnic Cohort Setting: The Care Consortium.

Circulation ◽  
2012 ◽  
Vol 125 (suppl_10) ◽  
Author(s):  
Jaclyn Ellis ◽  
Jeremy Walston ◽  
Josee Dupuis ◽  
Emma Larkin ◽  
Maja Barbalic ◽  
...  
Keyword(s):  
African Americans ◽  
Candidate Gene ◽  
Meta Analysis ◽  
Cardiovascular Health Study ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
European Americans ◽  
Heart Study ◽  
Study Results ◽  
Never Smokers

INTRODUCTION: C-reactive protein (CRP) is a heritable biomarker of systemic inflammation and a predictor of cardiovascular disease (CVD). Cigarette smoking is a major risk factor in the development of CVD and has been shown to affect circulating levels of CRP. Therefore, we sought to determine how this important environmental exposure may influence genetic associations with CRP in a multi-ethnic setting. METHODS: Using the ITMAT Broad-CARe (IBC) SNP array, a custom 50,000 SNP gene-centric array having dense coverage of over 2,000 candidate genes for CVD pathways, we performed a meta-analysis of up to 26,065 participants of European descent and 7,584 participants of African descent for association with log-CRP level within smoking status stratum. The 2 smoking strata were: never smokers and ever smokers (comprising of current and former smokers). We conducted IBC-wide association scans for CRP within cohort-, race- and smoking-stratum and meta-analyzed by race. Samples were from the Candidate gene Association Resource (CARe) cohorts (Atherosclerosis Risk in Communities Study, Framingham Heart Study, Cardiovascular Health Study, Cleveland Family Study , Coronary Artery Risk Development in Young Adults Study, Jackson Heart Study, and Multi-Ethnic Study of Atherosclerosis Study). Results were considered to be panel wide statistically significant if p<2.2×10−6. RESULTS: The overall sample size for ever smokers (never smokers) was 11,698 (10,344) in European Americans and 3,448 (4,330) in African Americans. The per-allele beta coefficients for genes previously established to be associated with CRP and present on the IBC chip ( CRP, APOE, GCKR, IL6R, LEPR, HNF1A, NLRP3 ) were very similar in magnitude between smoking strata in European Americans. However, in the African Americans, the estimated per-allele CRP and IL6R betas were 2-times larger for the ever smokers as compared to the never smokers. In the European American analysis, one gene not previously reported for association with CRP reached IBC-wide significance for a CRP-lowering effect in the never smokers ( GSTT1 , p=4.8E-07 for SNP rs405597 ), but not in the ever smokers (p=0.078). CONCLUSION: This large scale candidate gene based meta-analysis identified one novel locus for CRP ( GSTT1 ) associated with serum CRP levels in those reporting having never regularly smoked. Polymorphisms in GSTT1 , which plays a role in detoxification, have previously been reported to interact with smoking for other phenotypes including birth weight and colorectal cancer. We also observed evidence that smoking modifies the effects for previously established loci CRP and IL6R in African Americans. These results may identify important context genetic specific effects that influence chronic inflammation.

scholarly journals Clinical Significance of Serum Hemeoxygenase-1 as a New Biomarker for the Patients with Interstitial Pneumonia

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Kota Murohashi ◽  
Yu Hara ◽  
Kanako Shinada ◽  
Kenjiro Nagai ◽  
Masaharu Shinkai ◽  
...  
Keyword(s):  
High Resolution ◽  
Hospital Mortality ◽  
Disease Activity ◽  
Interstitial Pneumonia ◽  
Ground Glass Opacity ◽  
Serum Levels ◽  
Surfactant Protein ◽  
Serum Biomarkers ◽  
Surfactant Protein D ◽  
Newly Diagnosed

Background. Serum hemeoxygenase-1 (HO-1) has been proposed to be a biomarker of lung disease activity and prognosis. The present study aimed at evaluating whether HO-1 could be a useful marker for evaluating disease activity and predicting prognosis in patients with interstitial pneumonia (IP). Materials and Methods. Serum HO-1 levels of newly diagnosed or untreated patients with IP were measured at hospitalization. We evaluated the relationships between serum HO-1 and other serum biomarkers, high resolution CT (HRCT) findings, and hospital mortality. Results. Twenty-eight patients with IP, including 14 having an acute exacerbation (AE) and 14 not having an AE, were evaluated. The patients having an AE had significantly higher HO-1 levels than those not having an AE (53.5 ng/mL vs. 24.1 ng/mL; p<0.001), and the best cut-off level to discriminate between having an AE or not having an AE was 41.6 ng/mL. Serum HO-1 levels were positively correlated with serum levels of surfactant protein-D (r=0.66, p<0.001) and the ground glass opacity score (calculated from HRCT; r=0.40, p=0.036). Patients who subsequently died in hospital had presented with significantly higher HO-1 levels than those who did not die in hospital (64.8 ng/mL vs. 32.0 ng/mL; p=0.009). Conclusion. Serum HO-1 may serve as a useful biomarker for detecting AE or predicting hospital mortality in patients with IP.

Prediction of lung cancer risk using circulating pro-surfactant protein B and high-sensitivity C-reactive protein among Egyptian workers in the rubber industry

2020 ◽  
Vol 36 (4) ◽  
pp. 237-249
Author(s):  
Basma Hussein Mourad
Keyword(s):  
Lung Cancer ◽  
Manufacturing Process ◽  
High Sensitivity ◽  
Surfactant Protein ◽  
Control Group ◽  
C Reactive Protein ◽  
Rubber Industry ◽  
Reactive Protein ◽  
Surfactant Protein B ◽  
Exposed Workers

Objective: For several decades, there has been increasing evidence for excess incidence of lung cancer among workers in the rubber industry. The purpose of this study was to assess the risk of lung cancer occurrence among Egyptian workers involved in the rubber industry using two circulating protein biomarkers. Methods: This study was performed in a rubber manufacturing factory in Shubra El-Kheima region in Greater Cairo, Egypt. Environmental assessment for the suspended particulate matter of size 10 µm (PM10) concentrations was done. Levels of plasma pro-surfactant protein B (pro-SFTPB) and serum high-sensitivity C-reactive protein (HsCRP) were measured among the studied population ( n = 155) who were divided into two groups. The first group included 75 workers exposed to rubber manufacturing process while the control group involved 80 administrative subjects. Results: The levels of PM10 neither exceeded the Egyptian nor the international permissible limits where the highest levels were observed in the mixing department. However, through medical history and clinical examination, it was observed that some general and respiratory manifestations were more prevalent among the exposed group when compared with their controls. Laboratory investigations revealed that the mean values of pro-SFTPB and HsCRP levels among exposed workers were significantly higher than those of the control group. These increased circulating proteins levels were strongly and positively correlated with each other and with the duration of employment of exposed workers. Conclusion: The study results support the conclusion that prolonged occupational exposure to rubber manufacturing process is associated with an elevated risk of lung cancer.

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