scholarly journals Serum S100A8 as an early diagnostic biomarker in patients with community-acquired pneumonia

2020 ◽  
Author(s):  
Ling Zheng ◽  
Jun Fei ◽  
Zheng Xu ◽  
Chun-Mei Feng ◽  
Se-Ruo Li ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Inflammatory Cytokines ◽  
Demographic Data ◽  
A549 Cells ◽  
Community Acquired Pneumonia ◽  
Diagnostic Biomarker ◽  
Cross Sectional ◽  
Neutrophil Lymphocyte Ratio ◽  
Lymphocyte Ratio ◽  
Severity Scores

Abstract Background and Objectives Limited studies suggested that calprotectin may take part in the pathophysiology of community-acquired pneumonia (CAP). Nevertheless, there is no clinical study to analyze the role of S100A8 in CAP patients. The objective of this study was to analyze the association of serum S100A8 with the severity of CAP based on a cross-sectional study. Methods Entire 200 CAP patients and 100 normal subjects were recruited. Demographic data, clinical information and serum were collected on admission. Serum S100A8 and inflammatory cytokines were detected. Results Serum S100A8 was increased in CAP patients on admission. Serum S100A8 was gradually increased in parallel with the CAP severity scores. Serum S100A8 was positively correlated with CAP severity scores (CURB-65, CRB-65, PSI, CURXO and SMART-COP), blood routine parameters (WBC, neutrophil-lymphocyte ratio and monocyte-lymphocyte ratio) and inflammatory cytokines (TNFα, IL-1β and CRP). Furtherly, univariate and multivariate logistical regression analysis revealed that there was a positive association between serum S100A8 with CRB-65, PSI and CURXO. Moreover, the predictive capacity of serum S100A8 was performed by receiver operating characteristic area under the curve (AUC) analysis. The AUCs of S100A8 for CAP and CAP severity were 0.855 and 0.893, respectively. Mechanistic analysis found that S100A8 knockdown alleviated streptococcus pneumoniae-evoked inflammatory cytokines in A549 cells. Conclusion Serum S100A8 on admission was positively associated with the severity of CAP. S100A8 knockdown alleviates streptococcus pneumoniae- evoked inflammatory cytokines in A549 cells, indicating that S100A8 may exert an important role in the pathophysiology of CAP and be an early serum diagnostic biomarker for CAP.

scholarly journals Serum S100A8 as an early diagnostic biomarker in patients with community-acquired pneumonia

2021 ◽  
Author(s):  
Pu Fang ◽  
Ling Zheng ◽  
Peng Cao ◽  
Chen Zhang ◽  
Jun Fei ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Inflammatory Cytokines ◽  
Demographic Data ◽  
A549 Cells ◽  
Community Acquired Pneumonia ◽  
Diagnostic Biomarker ◽  
Roc Curve Analysis ◽  
Predictive Capacity ◽  
Cross Sectional ◽  
Severity Scores

IntroductionLimited studies have suggested that calprotectin may take part in the pathophysiology of community-acquired pneumonia (CAP). Nevertheless, there is no clinical study analysing the role of S100A8 in CAP patients. The objective of this study was to analyse the association of serum S100A8 with the severity of CAP and determine the cut-off values of S100A8 for predictive power based on a cross-sectional study.Material and methodsA total of 200 CAP patients and 100 normal subjects were recruited. Demographic data, clinical information, and serum were collected on admission. S100A8 and inflammatory cytokines were detected using ELISA and RT-PCR. All statistical analyses were performed with SPSS 19.0.ResultsSerum S100A8 was increased in CAP patients on admission. Serum S100A8 was gradually increased in parallel with CAP severity scores. Serum S100A8 was positively correlated with CAP severity scores, blood routine parameters, and inflammatory cytokines. Furthermore, univariate and multivariate logistical regression revealed that there were positive associations between serum S100A8 with CRB-65, PSI, and CURXO. Moreover, the predictive capacity of serum S100A8 was determined by ROC curve analysis. The area under the curves of S100A8 for CAP and CAP severity were 0.855 and 0.893, respectively. Mechanistic analysis found that S100A8 knockdown alleviated streptococcus pneumoniae-evoked inflammatory cytokines in A549 cells.ConclusionsSerum S100A8 on admission was positively associated with the severity of CAP. S100A8 knockdown alleviates streptococcus pneumoniae-evoked inflammatory cytokines in A549 cells, indicating that S100A8 may exert a significant effect on the pathophysiology of CAP and could be an early serum diagnostic biomarker for CAP.

Clinical and epidemiological features of community-acquired pneumonia during an epidemic of respiratory viral infection

2021 ◽  
Vol 31 (4) ◽  
pp. 490-498
Author(s):  
N. I. Izmozherova ◽  
A. A. Popov ◽  
E. R. Prokopeva ◽  
A. A. Kuryndina ◽  
E. I. Gavrilova ◽  
...  
Keyword(s):  
Risk Factors ◽  
Streptococcus Pneumoniae ◽  
Causative Agent ◽  
Community Acquired Pneumonia ◽  
Influenza Viruses ◽  
X Rays ◽  
Imaging Data ◽  
Cross Sectional ◽  
Epidemiological Features ◽  
Working Age

Community-acquired pneumonia (CAP) is one of the most common lower respiratory tract diseases. An increase in the CAP incidence has been reported to be associated with epidemics of acute respiratory viral infections (ARVI).Aim. Аssess clinical and epidemiological features of CAP in patients admitted to hospital during an ARVI epidemic.Methods. A cross-sectional study included 208 patient records. Medical history, physical examination, laboratory and imaging data were analyzed. CAP severity was assessed by CRB-65 scale and the systemic inflammatory response syndrome (SIRS) criteria.Results. Most CAP patients (75%) were of active working age; all presented signs of ARVI upon admission. Nasal mucosa diagnostic smears have revealed type A influenza viruses: H1N1 – 5 (83.3%) and H3N2 – 1 (16.7%) cases. 195 (93.8%) patients were not vaccinated against influenza. X-rays showed that unilateral (81.7%) and lobular pneumonia (55.8%) were the most common CAP types. 93.2% patients had nonsevere CAP, according to CRB-65. But 88 (42.3%) subjects qualified for SIRS upon admission. Concomitant conditions as risk factors of an adverse course of CAP were present in 89 patients (42.8%). Sputum analysis, if available, most frequently identified Streptococcus pneumoniae (23 cases or 38.9%) as a causative agent. Antibacterial drugs (ABD) used to treat CAP were ceftriaxone 206 (99%), macrolides 188 (90.4%), and fluoroquinolones 94 (45.2%). The initial antibacterial treatment regimens were: 186 (89.4%) prescriptions of ceftriaxone + macrolides, 16 (7.7%) prescriptions of ceftriaxone alone, and 6 (2.9%) prescriptions of levofloxacin. A switch between ABDs was reported in 78 (37.5%) cases, including 61 switches to fluoroquinolones. The median ABD administration duration was 10 (8 – 13) days.Conclusion. Most of the hospitalized CAP patients were of working age and not vaccinated against influenza. Streptococcus pneumoniae was the most common causative agent. PCR (polymerase chain reaction) smear analysis was performed only in 6 patients with ARVI, which does not allow us to assess the role of viruses and viral-bacterial associations in the etiology of CAP. In spite of non-severe CAP, all hospitalizations were justified, due to multiple risk factors of unfavorable prognosis of CAP and epidemiological factors. Most patients received a combination of generation 3 cephalosporins and macrolides as the initial therapy for CAP.

scholarly journals The Effects of Neutrophil-Lymphocyte Ratio, Platelet-Lymphocyte Ratio and Prognostic Markers in Determining the Mortality in Patients Diagnosed With Pneumonia in Intensive Care

2021 ◽  
Author(s):  
Ömer Faruk Altaş ◽  
Mehmet Kızılkaya
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Mortality Risk ◽  
Demographic Data ◽  
Apache Ii ◽  
Prognostic Scores ◽  
Characteristic Analysis ◽  
Neutrophil Lymphocyte Ratio ◽  
Lymphocyte Ratio ◽  
Point Increase

Objective: In this study, we aimed to reveal the level of predicting mortality of the Neutrophil/Lymphocyte (NLR) and Platelet/Lymphocyte Ratios (TLR) calculated in patients hospitalized with the diagnosis of pneumonia in the intensive care unit when compared with other prognostic scores. Method: The hospital records of 112 patients who were admitted to the intensive care unit between January 2015 and January 2018 and met the inclusion criteria were retrospectively reviewed. The patients’ demographic data, the NLR and PLR levels, and the APACHE II (Acute Physiology and Chronic Health Evaluation II) and SOFA (Sequential Organ Failure Assessment) scores were calculated from the patient files. Results: Of the 112 patients examined, 70 were males. The risk analysis showed that the male gender had 2.7 times higher risk of mortality. The NLR, PLR, APACHE II, and SOFA values were found statistically significant in predicting mortality (p<0.001). An evaluation of the risk ratios demonstrated that each one point increase in the NLR increased the mortality risk by 5%, and each one point increase in the SOFA score increased the mortality risk by 13% (p<0.05). In the ROC (receiver operating characteristic) analysis, the NLR assessment proved to be the most powerful, most specific, and sensitive test. The cut-off values were 11.3 for the NLR, 227 for the PLR, 29.8 for the APACHE II scores, and 5.5 for the SOFA scores. Conclusion: We believe that NLR and PLR are strong and independent predictors of mortality that can be easily and cost-effectively tested.

scholarly journals Neutrophil-Lymphocyte Ratio as a Prognostic Marker for Chemotherapy in Advanced Lung Cancer

2016 ◽  
Vol 31 (4) ◽  
pp. 395-401 ◽  
Author(s):  
Zhu-Lin Liu ◽  
Ting-Ting Zeng ◽  
Xiao-Juan Zhou ◽  
Ya-Nv Ren ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Cox Regression ◽  
Demographic Data ◽  
Biological Marker ◽  
Progression Free Survival ◽  
Advanced Lung Cancer ◽  
Characteristic Analysis ◽  
Neutrophil Lymphocyte Ratio ◽  
Lymphocyte Ratio ◽  
Treatment Naïve

Background Lung cancer ranks first both in morbidity and mortality in malignancies, but prognostic biological markers are lacking. The neutrophil-lymphocyte ratio (NLR) was proposed as a convenient biological marker. This study aimed to explore the prognostic value of NLR in advanced non-small cell lung cancer (NSCLC). Methods This retrospective study screened patients admitted from October 2007 to October 2014. Patients had histopathologically confirmed, treatment-naïve, metastatic NSCLC, and were prescribed platinum doublet chemotherapy. NLR and demographic data were collected, together with the outcome of chemotherapy. Progression-free survival (PFS) and overall survival (OS) were analyzed using the Kaplan-Meier method and Cox regression model. Results A total of 325 patients were enrolled. The cutoff value for NLR (3.19) was determined by receiver operator characteristic analysis. Patients were dichotomized into high (≥3.19) and low (<3.19) NLR groups. Both groups had similar demographic features. However, the low-NLR group had longer PFS (6.1 months) and OS (22.3 months) than the high-NLR group (5.1 months, p = 0.002; 13.1 months, p<0.001, respectively). Multivariate analysis confirmed that NLR was inversely related to the prognosis of these patients (HR = 1.684, 95%: 1.297-2.185, p<0.001). Conclusions This study argues that NLR is a convenient prognostic biological marker for advanced NSCLC patients treated with first-line chemotherapy and warrants further validation.

scholarly journals Neutrophil-lymphocyte ratio acts as a novel diagnostic biomarker for kidney stone prevalence and number of stones passed

2021 ◽  
Vol 10 (1) ◽  
pp. 77-86
Author(s):  
Weipu Mao ◽  
Jianping Wu ◽  
Ziwei Zhang ◽  
Zhipeng Xu ◽  
Bin Xu ◽  
...  
Keyword(s):  
Kidney Stone ◽  
Diagnostic Biomarker ◽  
Neutrophil Lymphocyte Ratio ◽  
Lymphocyte Ratio

scholarly journals Assessment of current laboratory diagnosis of pneumococcal community-acquired pneumonia

2020 ◽  
Vol 5 (4) ◽  
pp. 21-29
Author(s):  
Е. A. Koshkarina ◽  
O. V. Kovalishena ◽  
N. V. Saperkin ◽  
V. V. Krasnov ◽  
Р. G. Zubarov ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Mycoplasma Pneumoniae ◽  
High Specificity ◽  
Laboratory Diagnosis ◽  
Epidemiological Studies ◽  
Community Acquired Pneumonia ◽  
Diagnostic Methods ◽  
Cross Sectional ◽  
Laboratory Confirmation ◽  
Microbial Associations

Aim. To investigate the aetiology of community-acquired pneumonia in hospitalised children and to evaluate the accuracy of the methods for its laboratory confirmation. Materials and Methods. We performed descriptive and cross-sectional epidemiological studies. Results of the rapid immunochromatographic assay (ICT) were compared with those obtained by polymerase chain reaction (PCR). Results. DNA of Streptococcus pneumoniae and Mycoplasma pneumoniae was found in 65.5% and 13.8% of the patients. Microbial associations were observed in 13.7% of patients (Mycoplasma pneumoniae + Streptococcus pneumoniae, 10.3%; Streptococcus pneumoniae + Haemophilus influenzae, 3.4%). Chlamydophila pneumoniae and SARS-CoV-2 were not detected. The cause of community-acquired pneumonia was not identified in 6.9% of the cases. A diagnostic accuracy of ICT was 27.58% and its sensitivity was relatively small (9.09%; 95% CI 1; 29), compared with a relatively high specificity (85.7%; 95% CI 42; 100). Conclusions. Rapid ICT assay must be accompanied by the PCR or other diagnostic methods for the diagnosis of pneumococcal community-acquired pneumonia in children.

scholarly journals The role of monocyte to high-density lipoprotein cholesterol ratio in prediction of increased systemic inflammation and the risk of cardiovascular disease in endometriosis

2021 ◽  
Vol 38 (2) ◽  
pp. 106-110
Author(s):  
İsmail BIYIK ◽  
Fatih KESKİN ◽  
Nagihan SAZ
Keyword(s):  
Systemic Inflammation ◽  
Demographic Data ◽  
Hdl Cholesterol ◽  
Reproductive Age ◽  
Prognostic Indicators ◽  
Control Group ◽  
Distribution Width ◽  
Cholesterol Ratio ◽  
Neutrophil Lymphocyte Ratio ◽  
Lymphocyte Ratio

Endometriosis occurs in about 5-10 in 100 women of reproductive age. The pathophysiology of endometriosis is controversial. Some studies claimed an association between endometriosis and increased levels of inflammatory factors in peritoneal fluid and/or peripheral blood. Monocyte / HDL cholesterol ratio (MHR) and neutrophil/lymphocyte ratio (NLR) are inflammatory markers and are used as predictors and prognostic indicators of mortality and morbidity in many diseases. In this study, we aimed to investigate whether Monocyte / HDL cholesterol ratio (MHR) and neutrophil/lymphocyte ratio (NLR) are increased in endometriosis as in patients with chronic inflammation and cardiovascular diseases. This is a retrospective case-control study conducted with 87 women, 45 in the endometriosis group and 42 in the control group. The demographic data, biochemical, complete blood count parameters and lipid profile of the cases were recorded and compared between the groups. The mean age of the endometriosis group was 33.88 years and was older than the control group. In terms of other demographic data, there were no difference between the two groups. Although the platelet distribution width and triglyceride values of the endometriosis group were higher than controls, they were interpreted as clinically insignificant. There were no significant differences between the groups in terms of other laboratory parameters including MHR and NLR. In this study, MHR and NLR are found similar in endometriosis and control groups. Further studies are needed to investigate the relationship between increased systemic inflammation.

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