scholarly journals Diagnostic value of CSF proteins assay in differential diagnosis of CNS disease

2005 ◽  
Vol 24 (2) ◽  
pp. 107-110
Author(s):  
Dragana Vukosavljevic ◽  
Ljiljana Bumbasirevic ◽  
Aleksandra Stefanovic ◽  
Marina Stojanov
Keyword(s):  
Differential Diagnosis ◽  
Inflammatory Diseases ◽  
Diagnostic Value ◽  
Control Group ◽  
Reference Ranges ◽  
Quantitative Measurements ◽  
Igg Synthesis ◽  
Csf Proteins ◽  
Significant Difference ◽  
Intrathecal Igg Synthesis

The differential diagnosis between inflammatory and noninflammatory diseases of CNS includes CSF quantitative measurements of immunoglobulin and albumin concentrations and their comparison to the serum. For that purpose we estimated the concentrations of albumin and immunoglobulin G both in CSF and serum of patients with inflammatory and noninflammatory diseases of CNS. Parallely, these parameters were determined in the control group composed of patients having the values of investigated parameters within reference ranges. The obtained data were statistically evaluated by nonparametric Mann-Whitney test. The values of calculated CSF/albumin ratio have shown significant differences between the both patient groups and the control one (p < 0.001). It proves that in each examined group the blood brain barrier is damaged. For the assessment of intrathecal IgG synthesis we have calculated both IgG/albumin index and Schuller index. The comparison of the values obtained for patients with noninflammatory diseases to the control one, revealed no statistically significant differences (p > 0.05). On the contrary, significant difference have been observed between the group with inflammatory diseases and the control (p < 0.05), proving the existence of IgG intrathecal synthesis. Values of both indexes were much higher in patients with inflammatory than noninflamatory diseases, meaning that they can be used in differential diagnosis.

scholarly journals The Diagnostic Value of Irisin in Pediatric Patients with Acute Abdominal Pain

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Fatma Sarac ◽  
Sevgi Buyukbese Sarsu ◽  
Selman Yeniocak ◽  
Kamil Sahin ◽  
Esma Yucetas ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Abdominal Pain ◽  
Pediatric Patients ◽  
Acute Abdominal Pain ◽  
Perforated Appendicitis ◽  
Peptide Hormone ◽  
Diagnostic Value ◽  
Control Group ◽  
Initial Examination ◽  
Significant Difference

Objectives. Diagnosis of pediatric patients presenting to the Emergency Department with acute abdominal pain is not always easy. The purpose of this study was to investigate the effectiveness of irisin, a peptide hormone with reactivity shown in the appendix and neutrophils, in the differential diagnosis of pediatric patients with acute abdominal pain. Methods. 162 subjects consenting to participate, including 112 patients presenting to the Pediatric Emergency and Pediatric Surgery clinics with acute abdominal pain and 50 controls, were enrolled in the study. Blood was collected from all patients following initial examination for irisin, WBC, and CRP investigation. Results. Mean irisin levels in cases of acute appendicitis (AA) and perforated appendicitis (PA) were statistically significantly higher compared to nonspecific abdominal pains and the control group. No statistically significant difference was observed in irisin levels between AA and PA cases. WBC and CRP levels were also significantly higher in cases of AA and PA compared to nonspecific abdominal pains. Conclusions. Differential diagnosis of acute abdominal pains in children and deciding on surgery are a difficult and complex process. Our study shows that irisin can be a useful biomarker in differentiating AA and PA from other acute abdominal pains in children.

scholarly journals Usefulness of procalcitonin (PCT), C-reactive protein (CRP), and white blood cell (WBC) levels in the differential diagnosis of acute bacterial, viral, and mycoplasmal respiratory tract infections in children

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Yang Li ◽  
Lanfang Min ◽  
Xin Zhang
Keyword(s):  
Differential Diagnosis ◽  
Respiratory Tract ◽  
Bacterial Infection ◽  
Bacterial Infections ◽  
Respiratory Tract Infections ◽  
Respiratory Infections ◽  
Diagnostic Value ◽  
Significant Difference ◽  
Group A ◽  
Tract Infections

Abstract Background There is a lack of studies comparing PCT, CRP and WBC levels in the differential diagnosis of acute bacterial, viral, and mycoplasmal respiratory tract infections. It is necessary to explore the correlation between above markers and different types of ARTI. Methods 108 children with confirmed bacterial infection were regarded as group A, 116 children with virus infection were regarded as group B, and 122 children with mycoplasmal infection were regarded as group C. The levels of PCT, CRP and WBC of the three groups were detected and compared. Results The levels of PCT, CRP and WBC in group A were significantly higher than those in groups B and C (p < 0.05). The positive rate of combined detection of PCT, CRP and WBC was significant higher than that of single detection. There was no significant difference in PCT, CRP and WBC levels between the group of G+ bacterial infection and G− bacterial infection (p > 0.05). ROC curve results showed that the AUC of PCT, CRP and WBC for the diagnosis of bacterial respiratory infections were 0.65, 0.55, and 0.58, respectively. Conclusions PCT, CRP and WBC can be combined as effective indicators for the identification of acute bacterial or no-bacterial infections in children. The levels of PCT and CRP have higher differential diagnostic value than that of WBC in infection, and the combined examination of the three is more valuable in clinic.

scholarly journals Effects of Conventional Synthetic Disease-Modifying Antirheumatic Drugs on Response to Periodontal Treatment in Patients with Rheumatoid Arthritis

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Gyu-Un Jung ◽  
Ji-Young Han ◽  
Kyung-Gyun Hwang ◽  
Chang-Joo Park ◽  
Panagiota G. Stathopoulou ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Inflammatory Diseases ◽  
Periodontal Treatment ◽  
Control Group ◽  
Scaling And Root Planing ◽  
Disease Modifying Antirheumatic Drugs ◽  
Antirheumatic Drugs ◽  
Root Planing ◽  
Significant Difference ◽  
Disease Modifying

Rheumatoid arthritis (RA) and periodontitis are common chronic inflammatory diseases and periodontitis is known to be more common and more severe in patients with RA. Based on a paucity of studies about the relationship between common conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) and periodontitis, this prospective study aimed to evaluate the adjunctive effect of csDMARDs on response to nonsurgical periodontal treatment in patients with RA. Thirty-two patients with RA (RA group) and 32 systemically healthy patients (control group) with periodontitis were included in this study. The RA group patients were treated with csDMARDs, such as methotrexate, hydroxychloroquine, and sulfasalazine. Conventional nonsurgical periodontal treatment with scaling and root planing was performed in both groups. The extent and severity of periodontitis were evaluated by plaque index (PI), gingival index (GI), probing depth (PD), clinical attachment level (CAL), and bleeding on probing (BOP) at baseline and 4 weeks after periodontal treatment. There was no statistically significant difference of periodontal parameters between the RA and control groups at baseline. Four weeks after scaling and root planing, PD reduction, and CAL gain were higher in the RA group treated with csDMARDs compared to the control group, and the difference was statistically significant (P = 0.006 and 0.003, respectively). A post hoc analysis of the RA group showed no statistically significant difference on the response to nonsurgical periodontal treatment in multiple csDMARDs therapy and addition of NSAIDs and/or steroids to csDMARDs. In patients with RA, csDMARDs showed beneficial effect on periodontal clinical parameters following the nonsurgical periodontal treatment.

Diagnostic efficacy of serum and urinary netrin-1 in the early detection of diabetic nephropathy

2021 ◽  
pp. jim-2021-001785
Author(s):  
Rasha A Elkholy ◽  
Reham L Younis ◽  
Alzahraa A Allam ◽  
Rasha Youssef Hagag ◽  
Muhammad Tarek Abdel Ghafar
Keyword(s):  
Diabetic Nephropathy ◽  
Early Detection ◽  
Characteristic Curve ◽  
Fasting Blood Glucose ◽  
Area Under The Curve ◽  
Diagnostic Value ◽  
Control Group ◽  
Diagnostic Efficacy ◽  
Significant Difference ◽  
Patients With Diabetes

This study aimed to assess the diagnostic value of serum and urinary netrin-1 in patients with type 2 diabetes mellitus (T2DM) at different stages of diabetic nephropathy (DN) and to compare its efficacy of estimation in serum with that in the urine. This study was carried out on 135 patients with T2DM and 45 healthy subjects. The patients with diabetes were divided according to urinary albumin creatinine ratio (UACR) into: T2DM with normoalbuminuria, incipient DN with microalbuminuria, and overt DN with macroalbuminuria groups. Serum and urinary levels of netrin-1 were measured by ELISA. The mean levels of serum and urinary netrin-1 were significantly higher in the microalbuminuric and macroalbuminuric patients with DN than those in the normoalbuminuric patients with T2DM, with the highest values detected in macroalbuminuric patients with DN. Urinary netrin-1 level was significantly higher in the normoalbuminuric T2DM group than control group, whereas no significant difference existed regarding serum netrin-1 level. In T2DM groups, the urinary and serum netrin-1 correlated with each other and were independently related to fasting blood glucose, UACR, and estimated glomerular filtration rate. Receiver operating characteristic curve analysis showed that the area under the curve of urinary netrin-1 was 0.916 which is significantly higher than that of serum netrin-1 (0.812) for the detection of incipient DN and reached 0.938 on coestimation of both urinary and serum netrin-1. In conclusion, netrin-1 is a potential diagnostic marker for early detection of DN with its estimation in urine has higher accuracy than that of serum.

P0080INTERLEUKIN-17A GENE POLYMORPHISM (RS2275913G>A) IN SLE PATIENTS

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Nehal Atef elshabrawy ◽  
Hussein Sheashaa ◽  
Adel L Abdelsalam ◽  
Ahmed Mohammed Abd El Wahab
Keyword(s):  
Lupus Nephritis ◽  
Gene Polymorphism ◽  
Inflammatory Diseases ◽  
Statistical Significance ◽  
Group Versus ◽  
University Hospital ◽  
Control Group ◽  
Cross Sectional ◽  
Dsdna Antibody ◽  
Significant Difference

Abstract Background and Aims There are six IL-17-family ligands [IL-17A, IL-17B, IL-17C, IL-17D, IL-17E (IL-25) and IL-17F]. Interleukin-17A (IL-17A) also commonly called IL-17, is produced by the T helper17 (Th17) subset of CD4+ T cells.Interleukin-17 and other Th17 cytokines are linked to the pathogenesis of diverse autoimmune and inflammatory diseases. IL-17A is detected in synovial fluids and synovium from RA patients and induces proinflammatory cytokine production from synoviocytes, also expression of IL-17A was higher in SLE patients and its level positively correlated with the severity of lupus nephritis, because of its contribution to increasing anti-double-stranded DNA (dsDNA) antibody production in SLE. The aim of the present study is to determine the IL-17A gene polymorphism (rs2275913 G&gt;A) frequency in patients with SLE and lupus nephritis, and to determine the association of this polymorphism with the disease activity. Method This cross-sectional, observational, case control study was carried out on 50 females patients, with their age ranged from 15 to 50 years (mean 25.67±9.29 years) with SLE attending Mansoura University Hospital .A control group of 50 healthy females of matched age were also included. The patient group was subdivided into patients with and those without lupus Nephritis (35 and 15 patients, respectively). Lupus nephritis was confirmed by renal biopsy. All patients were subjected to a thorough clinical evaluation and routine laboratory tests. SLEDAI score was calculated for all patients to determine the degree of lupus activity. DNA extraction was performed for all patients as well as controls, One SNPs of IL-17A (rs2275913G&gt;A) was genotyped utilizing PCR- RFLP technique. Results The frequency of rs2275913 A allele was significantly higher in SLE patients than the control group (34.0% vs. 21.0%, respectively; p=0.04, OR =1.9, 95%CI =1.03-3.65). While G allele was significantly higher in control group, (P=0.04)). Moreover, AA genotype was significantly higher in the SLE patients than in the control group (8.0% vs. 0.0%, respectively; p=0.036) and associated with higher SLEDAI, ANA, and anti-dsDNA antibodies titer, (P=0.03, P=.039, P=0.047 respectively).on the other hand there was no significant difference in GG and GA genotypes in the SLE patients versus the control group. The frequency of both genotype GA and AA was higher in the SLE patients than the controls (60% vs. 42%, respectivley; OR=2.07, CI-95%=0.9-5.59); although the difference was not statistically significant (P= 0.07).Although A allele was numerically higher in lupus nephritis group versus non nephritis group(37.0% vs 27.0%, respectively), the Analysis of the frequency of IL-17A rs2275913 alleles and genotypes showed no statistical differences between the two groups. Moreover there was no statistical significance between different genotypes in cases of nephritis regard lupus nephritis class (P=0.9) and no statistical significance between different genotypes (GG-GA-AA) regarding activity indices (AI) or chronicity indices (CI) in lupus nephritis group (P=0.18, P=0.56 respectively). Conclusion We suggest that there was a significant association between IL-17A rs2275913 G&gt;A polymorphism and SLE, as A allele and AA genotype were increased in SLE patients, lupus nephritis especially those with high activity

Diagnostic value of anti-CD74 antibodies in early and late axial spondyloarthritis and its relationship to disease activity

Rheumatology ◽  
2020 ◽  
Vol 60 (1) ◽  
pp. 263-268 ◽  
Author(s):  
Marwa Mahmoud Abdelaziz ◽  
Rania M Gamal ◽  
Nadia M Ismail ◽  
Raghda A Lafy ◽  
Helal F Hetta
Keyword(s):  
Disease Activity ◽  
Axial Spondyloarthritis ◽  
Diagnostic Value ◽  
Inactive Disease ◽  
Control Group ◽  
Igg Antibodies ◽  
Control Groups ◽  
Significant Difference ◽  
Healthy Control

Abstract Objectives This study was designed to evaluate the role of anti-CD74 antibodies in diagnosis of axial spondyloarthritis (axSpA) and their relationship to disease duration and disease activity. Methods Fifty patients with axSpA, 15 patients with RA and 15 healthy subjects were included in the study. Clinical examination and laboratory tests were done. The ESR, CRP level and ASDAS were measured as markers of the disease activity. Quantitative determination of human CD74 IgG antibodies was done. Results The mean age of the patients was 38.22 (S.D.12.20) years. The level of CD74 autoantibodies was significantly higher in axSpA in comparison to control groups. Most patients with positive articular and extra-articular manifestations were positive for CD74 autoantibodies. In patients with inactive disease, 33.3% were positive for CD74 autoantibodies, as were 83% with active disease. High percentages of patients with early and late axSPA were CD74 autoantibody positive. The majority of patients with positive disease activity in early and late axSpA were CD74 autoantibody positive. CD74 autoantibodies had 80% sensitivity vs both control groups with 87% specificity vs the healthy control group and 80% vs the RA control group in the diagnosis of axSpA. Conclusions The frequency of positive anti-CD74 IgG antibodies was as high in patients with early axSpA as in those with late axSpA, with no significant differences. There was a significant difference in the frequency of positive anti-CD74 IgG antibodies between patients with positive and negative disease activity. Based on the sensitivity and specificity of anti-CD74 IgG, this is a promising diagnostic tool to support the clinical diagnosis of axSpA.

scholarly journals Diagnostic value of serum IgG by Eliza to detecting Mycobacterium tuberculosis, Original Article

2021 ◽  
Vol 9 (1) ◽  
pp. 29-29
Author(s):  
Mehdi Haghdoost ◽  
Parisa Alizadeh Nazmi ◽  
Hamid Owaysee Osquee
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Pulmonary Tuberculosis ◽  
Immunoglobulin G ◽  
Diagnostic Value ◽  
World Health ◽  
Control Group ◽  
Reference Laboratory ◽  
Predictive Values ◽  
Serum Igg ◽  
Significant Difference

Introduction: In developing countries, which is an endemic region in terms of tuberculosis, there is an urgent need for fast, accurate, and inexpensive serological testing. The aim of this study was to determine the diagnostic value of patient serum IgG antibodies by ELISA in the diagnosis of Mycobacterium tuberculosis. Method: This case-control study was performed on patients with pulmonary tuberculosis in 2017-2020. After selecting the case (n = 30) and control (n = 30) subjects according to inclusion criteria, their blood samples were obtained and analyzed in the reference laboratory by standard kits for immunoglobulin G against 16, 36, and 40 kDa antigens of mycobacterium tuberculosis. Results: The mean age of the subjects was 47.07 (15.57%). The majority of participants were 46 (51.1%) women. There was no significant difference between the two groups regarding sex and age. serological examination of patients with pulmonary tuberculosis showed 25 positive results and only 4 of the control group had a positive result. Sensitivity, specificity, positive and negative predictive values of serology test were 83.3%, 86.67%, 86.20% and 87.88% respectively. Conclusion: Despite the acceptable sensitivity of the serologic immunoglobulin G test, according to the statement of World health organization (WHO), it did not possess an acceptable specificity. It is recommended that a a wider range of different antigens to be studied also it is essential to evaluate the diagnostic value of the other immunoglobulins inpatient in different stages of the disease.

scholarly journals Positive and Negative Aspects of Copaxone ( Glatiramer acetate) Action on TC, TG HbA1c and Iron Levels in The Sera of Iraqi Women with Multiple Sclerosis in Baghdad

2017 ◽  
Vol 14 (1) ◽  
pp. 157-166
Author(s):  
Baghdad Science Journal
Keyword(s):  
Multiple Sclerosis ◽  
Inflammatory Diseases ◽  
Control Group ◽  
Iron Level ◽  
Significant Difference ◽  
Fourth Decade ◽  
Healthy Control ◽  
Iraqi Women ◽  
Group B ◽  
And Control

The aim of the present study is to highlight the role of total cholesterol (TC), triacylglycerol (TG), Glycated hemoglobin A1c and iron in Iraqi women with multiple sclerosis and also to examine the biochemical action of copaxone (which is the most widely used in the 21st century to treat multiple sclerosis) on these biochemical parameters. This is the first study in Iraq which deals copaxone action on TC , TG , HbA1c and iron. Ninety women in their fourth decade suffering from multiple sclerosis were enrolled in this study. They were divided into: the first (group B) composed of (30) women without any treatment related to multiple sclerosis or any treatment linked with chronic or inflammatory diseases. The second (group A1) included (30) women under treatment with copaxone for 1 year, whereas the third group (group A2) involved (30) women under treatment with copaxone for 2 years. Patients groups were compared with a healthy control group (group C) composed of (30) healthy women, TC, TG, HbA1c and iron levels were determined in the sera of patients and control groups. Results of the present study has revealed that TC was high significantly increasing in the sera of group B (250.68±9.76) mg/dl compared with group C (175.36±8.81) mg/dl, while it was high significantly decreasing in the sera of groups A1 (211.88±5.90) mg/dl and A2 (212.12±5.60) mg/dL compared with group B (250.68±9.76) mg/dl. Beside, a non-significant difference was suggested between groups A1 (211.88±5.90) mg/dl and A2 (212.12±5.60) mg/dl. The present study also reported that TG was high significantly increasing in group B (224.84±10.76) mg / dl compared with group C (131.36±7.53) mg/dL whereas a significant decrease was shown in group A1(142.48±4.63) mg/dl and group A2 (195±4.20) mg/dl compared with group B (224.84±10.76) mg / dl. Surprisingly, a highly significant increase was reported in group A2 (195±4.20) mg/dl compared with group A1(142.48±4.63) mg/dl. The present study also suggested that HbA1c level was high significantly increasing in the sera of group B (6.53±0.57) mg/dl compared with group C (4.99±0.07) mg/dl. Oppositely, it was high significantly decreasing in the sera of groups A1 (4.72±0.42) mg/dl and A2 (4.53±0.35) mg/dl compared with group B (6.53±0.57) mg/dl. Futhermore, a non-significant difference was noted between groups A1 (4.72±0.42) mg/dl and A2 (4.53±0.35) mg/dl. This study also reported that iron level was high significantly decreasing in the sera of group B (37.31±4.24) µg / dl compared with group C (98.23±9.21) µg/ dl, whereas it was significantly increasing in the sera of groups A1 (44.05±6.32) µg/dl and A2 (45.31±6.82) µg/dl compared with group B (37.31±4.24) µg/dl . A non significant difference was shown between groups A1 (44.05±6.32) µg / dl and A2 (45.31±6.82) µg / dl.

scholarly journals Study on Serum miR-204 Expression Levels in Patients with Severe Pneumonia and Patients with Primary Bronchial Lung Cancer and Its Diagnostic Value

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Wenhong Zheng ◽  
Wei Huang ◽  
Xuchao Yu
Keyword(s):  
Lung Cancer ◽  
Severe Pneumonia ◽  
Diagnostic Value ◽  
Control Group ◽  
Qrt Pcr ◽  
Kaplan Meier ◽  
Significant Difference ◽  
The Difference ◽  
The Relationship ◽  
Low Expression

Objective. To analyze the expression and clinical significance of miR-204 in the serum of patients with severe pneumonia (SP) and primary bronchial lung cancer (LC). Methods. 65 SP patients and 43 primary bronchial LC patients who were treated in the hospital from January 2017 to December 2018 were randomly selected as the SP group and LC group. At the same time, healthy patients from the physical examination department of the hospital were selected. 65 cases were the control group. QRT-PCR detected serum miR-204 expression and compared the differences between groups. The pathological data of patients were collected, and the relationship between serum miR-204 and the patient’s pathological data was compared; the area under the ROC curve and Kaplan–Meier curve were used to evaluate the diagnostic value of serum miR-204 for the two conditions and to explore the relationship between serum miR-204 and prognosis. Results. The serum miR-204 of the SP group was (0.43 ± 0.09), the serum miR-204 of the LC group was (0.40 ± 0.10), the serum miR-204 of the control group was (1.00 ± 0.09), and the miR-204 level of was significantly higher than that of the control group, and the difference between the groups was statistically significant ( P  < 0.05). There was no significant difference in serum miR-204 levels between the SP group and the LC group ( P  > 0.05). Serum miR-204 levels in SP patients with cumulative organs ≥3 were higher than those with cumulative organs <3, and the difference was statistically significant ( P  < 0.001). In the LC group, in patients with stage III to IV and low and undifferentiated patients, the level of miR-204 was higher than that of stage I∼II and high and moderately differentiated patients, and the difference was statistically significant ( P  < 0.001). The level of miR-204 in the two groups of patients (0.89 ± 0.10, 0.83 ± 0.13) who died of illness was significantly higher than that of the surviving patients (1.00 ± 0.11, 1.00 ± 0.10), and the difference was statistically significant ( P  < 0.05); the survival rate of patients with high expression of miR-204 was higher than that of patients with low expression. The AUC of serum miR-204 level to SP and LC was 0.766 and 0.818, respectively. Conclusion. The level of miR-204 in the serum of SP patients and patients with primary bronchial LC was significantly lower than that of healthy people, and patients who died were lower than those who survived; the miR-204 in serum has a good diagnostic value for SP and LC and is related to the survival and prognosis of patients.

scholarly journals Application of PCT, CRP and WBC levels in the differential diagnosis of acute bacterial, viral, and mycoplasmal respiratory tract infections

2021 ◽  
Author(s):  
Li Yang ◽  
Min Lanfang ◽  
Zhang Xin
Keyword(s):  
Differential Diagnosis ◽  
Respiratory Tract ◽  
Bacterial Infections ◽  
Respiratory Tract Infections ◽  
Respiratory Infections ◽  
Area Under The Curve ◽  
Diagnostic Value ◽  
Significant Difference ◽  
Group A ◽  
Tract Infections

Objective There is a lack of studies comparing Procalcitonin (PCT), C-reactive protein (CRP) and white blood cell (WBC) levels in the differential diagnosis of acute bacterial, viral, and mycoplasmal respiratory infections. It is necessary to explore the correlation between above markers and different types of acute respiratory tract infections (ARTI). Methods 108 children with confirmed bacterial infection were regarded as group A, 116 children with virus infection were regarded as group B, and 122 children with mycoplasma infection were regarded as group C. The levels of PCT, CRP and WBC of the three groups were detected and compared. Results The levels of PCT, CRP and WBC in group A were significantly higher than those in groups B and C (P <0.05). The positive rate of combined detection of PCT, CRP and WBC was significantly higher than that of single detection. There was no significant difference of PCT, CRP and WBC levels between the group of Gram-positive (G+) bacteria infection and Gram-negative (G-) bacteria infection (P >0.05). ROC curve results showed that the area under the curve (AUC) of PCT, CRP and WBC for the diagnosis of bacterial respiratory infections were 0.65, 0.55, and 0.58, respectively. Conclusions PCT, CRP and WBC can be used as effective indicators for the identification of acute bacterial or no-bacterial infections in children. The levels of PCT and CRP have higher differential diagnostic value than that of WBC in infection, and the combined examination of the three is more valuable in clinic.

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