Platelet Distribution Width Levels Research Articles

Abstract 13332: Platelet Distribution Width is Associated With Adverse Prognosis in Patients With Heart Failure

Backgrounds: The associations between red blood cell distribution width and prognosis in patients with heart failure (HF) have been reported. However, the prognostic impact of platelet distribution width (PDW) has been unclear in HF patients. Methods: We conducted a prospective observational study. We analyzed data on 1,746 hospitalized patients with HF who discharged alive and measured PDW at stable condition in prior to discharge. Patients were divided into tertiles based on levels of PDW: 1 st (PDW < 15.9 fL, n = 586), 2 nd (PDW 15.9-16.8 fL, n = 617), and 3 rd (PDW ≥ 16.9, n = 543) tertiles. We compared baseline patients’ characteristics and their post-discharge prognosis such as all-cause death, cardiac death, and cardiac events including cardiac death and re-hospitalization due to worsening HF. Results: Prevalence of diabetes mellitus, anemia, and chronic kidney disease was highest in the 3 rd tertile than in the 1 st and 2 nd tertiles (diabetes mellitus, 42.7% vs. 40.3% and 30.5%, P < 0.001; anemia, 52.5% vs. 48.3% and 41.2%, P < 0.001; chronic kidney disease, 57.5% vs. 49.0% and 49.3%, P = 0.005). Age was oldest and B-type natriuretic peptide levels were highest in the 3 rd tertile compared to the 1 st and 2 nd tertiles (age, 70.0, vs. 69.0 and 68.0 years old, P = 0.038; B-type natriuretic peptide, 241.0 vs. 235.2 and 171.9 pg/mL, P < 0.001). In contrast, sex and left ventricular ejection fraction did not differ among the groups. The Kaplan-Meier analysis ( Figure ) demonstrated that rates of all endpoints were the highest in the 3 rd tertile among the groups (log-rank P < 0.001, respectively). The Cox proportional hazard analysis adjusted for potential confounding factors revealed that the 3 rd tertile was independently associated with adverse prognosis (all-cause death, hazard ratio [HR] 1.312, P = 0.042; cardiac death, HR 1.422, P = 0.046; cardiac event, HR 1.283, P = 0.041). Conclusion: PDW is a novel independent predictor of adverse prognosis in patients with HF.

The value of theplatelet count and platelet indices in differentiation of COVID-19 and influenza pneumonia.

It is difficult to distinguish coronavirus disease-2019 (COVID-19) from other viral respiratory tract infections owing to the similarities in clinical and radiological findings. This study aims to determine the clinical importance of platelet count and platelet indices in the differentiation of COVID-19 from influenza and the value of these parameters in the differential diagnosis of COVID-19.The medical records of the patients and the electronic patient monitoring system were retrospectively analyzed. Demographic characteristics, admission symptoms, laboratory findings, radiological involvement, comorbidities, and mortality of the patients were recorded.Forty-three patients diagnosed with influenza and 54 diagnosed with COVID-19 were included in the study. The average age of the COVID-19 patients was lower than that of the influenza patients (influenza: 60.5 years, COVID-19: 52.4 years; pp = 0.024),.024), and the male gender was predominant in the COVID-19 group (influenza: 42%, COVID-19: 56%). According to laboratory findings, the mean platelet volume (MPV) and MPV/platelet ratio were statistically significantly lower, whereas the eosinophil count and platelet distribution widthlevels were significantly higher (p < 0.05)in the COVID-19 group. It was found that the most common symptom in both groups was dyspnea and that the symptom was more prevalent among influenza patients.In the diagnosis of COVID-19, the platelet count and platelet indices are easily accessible, inexpensive, and important parameters in terms of differential diagnosis and can help in the differentiation of COVID-19 from influenza during seasonal outbreaks of the latter.

Examination of Systemic Inflammation Related Hemogram Biomarkers in Children and Adolescents with Generalized Anxiety Disorder

Objective: In this study, we aimed to examine the complete blood count parameters and blood-based systemic inflammatory markers in children with generalized anxiety disorder (GAD). Method: Retrospectively, complete blood count of 48 GAD diagnosed children and adolescents and age-gender matched 46 healthy controls were compared in terms of hemoglobin (Hb), erythrocyte distribution width (RDW), platelet count (PLT), mean platelet volume (MPV), platelet distribution width (PDW), plateletcrit (PCT), white blood cell count (WBC), neutrophil, lymphocyte and monocyte counts and neutrophil to lymphocyte ratio (NLR), monocyte to lymphocyte ratio (MLR), and platelet to lymphocyte ratios (PLR). Chi-square test, independent samples t-test and Mann-Whitney U test were used for statistical evaluation. Results: MPV levels were found to be significantly higher (p=0.020), while PLT and PDW levels were found to be significantly lower (p=0.018 and p=0.011, respectively) in children and adolescents with GAD. There was no statistically significant difference in terms of hemoglobin (Hb), erythrocyte distribution width (RDW), plateletcrit (PCT), white blood cell count (WBC), neutrophil, lymphocyte and monocyte counts and neutrophil to lymphocyte ratio (NLR), monocyte to lymphocyte ratio (MLR), platelet to lymphocyte ratios (PLR) between case and control groups. Conclusion: Platelet parameters that have been postulated to be associated with inflammation, such as MPV and PDW may be related to possible inflammatory background of GAD in children and adolescents and comprehensive prospective studies are required on this subject.An Erratum to this article was published on 17 March 2021. https://dergipark.org.tr/en/pub/ktd/issue/60658/897382

Prognostic Significance of Combined Platelet Distribution Width and C-Reactive Protein Score in Esophageal Cancer.

The platelet distribution width (PDW) and serum C-reactive protein (CRP) levels are known to be predictive of prognosis in various malignancies. Our aim was to determine whether combining PDW and serum CRP levels produces a prognostic indicator for esophageal cancer (EC) patients. A total of 168 EC patients who underwent neoadjuvant therapy prior to esophagectomy were included in this study. We defined a combined PDW and CRP (CPC) score as follows: patients with both low pretherapeutic PDW (≤12.4 fl) and high postoperative serum CRP levels (≥0.5 mg/dl) were assigned a score of 2, while patients with one or neither of those were assigned a score of 1 or 0. A multivariable analysis showed that the CPC score was a significant risk factor for overall (p=0.006) and recurrence-free (p=0.004) survival. The CPC score is a strong prognostic indicator in EC patients.

Higher platelet distribution width is associated with unfavorable prognosis in ovarian cancer.

Ovarian cancer (OC) is one of the most malignant gynecological cancers. Platelets play a profound role in cancer growth and metastasis. Platelet distribution width (PDW) is an indicator of platelet activation and is altered in malignancies. However, the prognostic value of PDW in OC remains unclear. This present study aimed to investigate the predictive significance of PDW in OC. 221 OC patients, between January 2013 and December 2013, were included in this study. The correlations between PDW and clinicopathological features were analyzed. Kaplan-Meier method and Cox regression were used to evaluate the prognostic impact of PDW. Of the 221 patients, increased PDW levels were observed in 163 (73.6%) patients. Kaplan-Meier analysis revealed that higher PDW levels were associated with poor progression-free survival and overall survival (both p< 0.001). Cox-regression analysis confirmed the independent predictive value of PDW on overall survival (HR = 2.820, 95% CI = 1.776-4.476, p< 0.001). Higher PDW levels predict poor prognosis in patients with OC. Elevated PDW may be a novel target for therapy.

Platelet parameters in Chinese older adults with metabolic syndrome.

Purpose:We aimed to examine the associations of platelet parameters with the presence of metabolic syndrome in community-dwelling older Chinese adults.Methods:Study sample was from the Weitang Geriatric Diseases Study, which included 4338 individuals aged 60 years or above. The mean age of the participants was 68 years. Metabolic syndrome was defined based on the Adult Treatment Panel III criteria. Platelet parameters were assessed using an automated hematology analyzer. Multiple logistic regression models were fitted to examine relationships between the platelet parameters and the presence of metabolic syndrome after adjusting for potential confounders.Results:The adjusted odds ratio (95% CI) of metabolic syndrome for the highest quartile of platelet parameters (platelet count, mean platelet volume, plateletcrit, platelet distribution width, platelet larger cell ratio) when compared to the lowest quartile were 1.32 (1.06, 1.64), 1.00 (0.81, 1.24), 1.37 (1.10, 1.71), 1.45 (1.14, 1.83), 1.11 (0.89, 1.39), respectively. Hypertension and diabetes modified the relationship between platelet distribution width and metabolic syndrome with the associations being significant in hypertensive and non-diabetic groups. The levels of platelet distribution width increased with the risk of metabolic syndrome in men but not in women.Conclusion:The levels of platelet count, plateletcrit and platelet distribution width increased in older adults with metabolic syndrome, suggesting that these parameters may be useful biomarkers for further risk appraisal of metabolic syndrome in aged population.

Hipoksik iskemik ensefalopatili infantlarda tam kan sayımı parametreleri ve ekokardiyografi bulgularının prognostik değeri

Purpose: The aim of this study was to investigate the prognostic value of complete blood count parameters, presence of pulmonary hypertension (PH) and valve failure in newborns with hypoxic ischemic encephalopathy (HIE). Materials and Methods: 115 term newborns with Sarnat Stage 2 and 3 with HIE and 90 healthy newborns were included in this retrospective study. Echocardiographic examination, red blood cell distribution width (RDW), platelet distribution width (PDW), and C-reactive protein (CRP) values at the first six hours and at 72 hours after the cooling treatment were compared with controls.Results: There was a relationship between presence of mitral regurgitation (MR), aortic regurgitation (AR), and persistent PH and death. The mean RDW, PDW and CRP levels at the first six and after 72 hours were significantly higher in infants with HIE when compared with the control group, and these parameters were significantly increased in the stage 3 group. A significant relationship was found between the increase in RDW and CRP values and the presence of MR, AR and mortality.Conclusion: The degree of PH and presence of valvular insufficiency are important parameters in determining prognosis in HIE. Also, simple blood tests such as RDW and CRP and the echocardiographic evaluation are found to be correlated with hospitalization period and mortality and may be a guide in prognosis.

Platelet and Red Blood Cell Indices in Patients with Panic Disorder: A Receiver Operating Characteristic Analysis.

Objective Panic disorder (PD) is associated with changes in platelet and red blood cell (RBC) indices. However, the diagnostic or predictive value of these indices is unknown. This study assessed the diagnostic and discriminating value of platelet and RBC indices in patients with PD. Materials and Methods In this cross-sectional study including patients with PD ( n = 98) and healthy controls ( n = 102), we compared the following blood indices: mean platelet volume (MPV), platelet distribution width (PDW), and RBC distribution width (RDW). The receiver operating characteristic (ROC) curve was used to calculate the area under the ROC curve (AUC), sensitivity, specificity, and likelihood ratio for the platelet and RBC indices. Results Statistically significant increase in PDW (17.01 ± 0.91 vs. 14.8 ± 2.06; p < 0.0001) and RDW (16.56 ± 2.32 vs. 15.12 ± 2.43; p < 0.0001) levels were observed in patients with PD. PDW and mean corpuscular hemoglobin concentration had larger AUC (0.89 and 0.74, respectively) and Youden’s index (0.65 and 0.39, respectively), indicating their higher predictive capacity as well as higher sensitivity in discriminating patients with PD from healthy controls. Conclusion PDW can be considered a “good” diagnostic or predictive marker in patients with PD.

Association of platelet count and platelet indices with cranial meningioma

Introduction and Objectives: In this study, we aimed to investigate whether platelet count (PLT) and platelet indices included mean platelet volume (MPV), platecrit (PCT), platelet distribution width (PDW) values can be used as diagnostic markers in cranial meningiomas.&#x0D; Materials and Methods: The study included results of 29 patient and 47 healthy contributors. Based on pathologies, the patients were divided into two groups. The first group included meningioma patients and the second one included healthy individuals. Healthy contributors named control group. Platelet count and platelet indices were determined using Sysmex XN 550 haematology analyzer. The preoperative platelet count (PLT) and platelet indices included mean platelet volume (MPV), platecrit (PCT), platelet distribution width (PDW) values were recorded from the routine laboratory tests.&#x0D; Results: There was no statistically significant difference in PLT between the meningioma and healthy groups (p = 0.217). There was a statistically significant difference in PCT between the meningioma group and the healthy group (p = 0.002). There was a statistically significant difference in PDW between meningioma group and healthy group (p = 0.001). In terms of MPV, there was a statistically significant difference between meningioma group and the healthy group (p = 0.001)&#x0D; Conclusion: Platelet count and indices are easily available in the routine blood tests. Despite the retrospective design and small sample size, our findings suggest that altered MPV, PDW and PCT levels might serve as potential biomarkers for the diagnosis of meningiomas.

Platelet Distribution Width Level in Patients With Systemic Lupus Erythematosus-Associated Pulmonary Arterial Hypertension and Its Diagnostic Value.

Objectives This study aims to compare the platelet distribution width (PDW) level in patients with systemic lupus erythematosus-associated pulmonary arterial hypertension (SLE-PAH) with that in patients with systemic lupus erythematosus alone (SLE-non-PAH) and to evaluate the clinical value of the PDW level in the early diagnosis of SLE-PAH.Patients and methods We analyzed 80 SLE-PAH patients (1 males, 79 females; 34.9±12.3 years; range, 19 to 77 years) and 154 sex- and age-matched SLE-non-PAH patients (4 males, 150 females; mean age 36.7±12.4 years; range, 19 to 69 years) hospitalized between June 2011 and April 2018. All patients underwent transthoracic Doppler echocardiography within three months of inclusion in the study. Age, sex, disease course, currently prescribed medications, clinical manifestations, and past history were collected. Pulmonary artery systolic pressure, ejection fraction, white blood cell count, red blood cell count, hemoglobin, platelet count, PDW, mean platelet volume, erythrocyte sedimentation rate, complement 3 (C3), and C4 levels were also obtained.Results The PDW level was higher in the SLE-PAH group than that in the SLE-non-PAH group (p=0.023). SLE patients were allocated into high systemic lupus erythematosus disease activity index (SLEDAI) group (SLEDAI score, ≥10) (n=121) or low SLEDAI group (SLEDAI score, <10) (n=113). The PDW level was significantly higher in the high SLEDAI group than that in the low SLEDAI group (p=0.030). The receiver operating characteristic curve was used to evaluate the clinical value of the PDW level in diagnosing PAH in SLE patients. The PDW level was valuable for diagnosing PAH in SLE patients [area under the curve (AUC)=0.591, p=0.023]. The optimal critical value of the PDW level was 14.55 fL. Under these conditions, the sensitivity, specificity, and Youden index were 57%, 63% and 0.20, respectively. For newly diagnosed patients, the PDW level had good diagnostic accuracy, with an AUC of 0.626 (p=0.037). The optimal critical value of the PDW level was 14.65 fL. Under these conditions, the sensitivity, specificity, and Youden index were 66%, 67% and 0.33, respectively.Conclusion The PDW level is a good predictor of SLE-PAH, and this parameter is applicable to various clinical settings.

Evaluation of Platelet Activity Markers in Prognostic Value of Children with Crimean-Congo Hemorrhagic Fever

Abstract Objective The aim of this study is to investigate the prognostic value of platelet (PLT) activity markers in children with Crimean-Congo hemorrhagic fever (CCHF) and compare results with healthy controls. Materials and Methods A total of 135 patients with CCHF and 100 healthy children were included in this retrospective study. Mean age was 12.4 ± 3.3 years in CCHF group, and 92 patients were male. We measured PLT count, mean platelet volume (MPV), platelet distribution width (PDW), and mean platelet mass (MPM) as PLT activity markers. Results A statistically significant decrease in MPM and PLT, and significantly higher levels of PDW and activated partial thromboplastin time (aPTT) and no significant difference in MPV were observed in patients with CCHF compared with controls. Although there were no significant differences between the severe and nonsevere CCHF groups in term of MPV and PDW, the MPM value was significantly decreased in severe patients (p &lt; 0.001). Furthermore, MPM values were inversely correlated with aPTT (r = −0.617, p = 0.015), and positively correlated with PLT (r = 0.703, p &lt; 0.001) which are considered likely to be indicators of disease severity. Multivariate logistic regression analysis revealed MPM as an independent risk factor for severe disease. Conclusion Our study demonstrated that MPM values were decreased in severe cases compared with nonsevere in children with CCHF. The MPM as an indicator of PLT activation at the time of diagnosis in children with CCHF can be used as a prognostic index for disease severity.

Changes in and significance of platelet function and parameters in Kawasaki disease

Kawasaki disease (KD) is a systemic febrile, inflammatory vascular disease of unknown etiology. The coronary artery abnormality (CAA) caused by KD has become the most commonly acquired heart disease in children. Initial treatment of intravenous immunoglobulin (IVIG) can reduce the incidence of CAA. Thrombocytosis is common during the course of KD, but changes in and significances of platelet function and parameters are unclear. In this study, we enrolled 120 patients, including 40 patients with KD, 40 febrile controls, and 40 afebrile controls. The platelet function was assessed using the platelet function analyzer (PFA)-200. Platelet parameters, including platelet count (PLT), mean platelet volume (MPV), platelet distribution width (PDW), and platelet hematocrit (PCT) were measured. In the febrile period, the PDW and MPV were lower in KD patients (P < 0.05). The platelet function did not change significantly during the febrile period of KD but weakened in the defervescence phase. No significant differences between the CAA and normal groups, and between IVIG resistance and response groups. The diagnostic cutoff value of the PDW level for predicting KD was 10.85 fL with a sensitivity of 55% and a specificity of 77.5% (area under curve (AUC) = 0.690, 95% confidence interval (CI): 0.574–0.806, P < 0.01). Besides, the MPV level was 9.55 fL with sensitivity of 75% and specificity of 70% (AUC = 0.733, 95%CI: 0.620–0.846, P < 0.001). This is the first longitudinal study of platelet function changes in KD patients using PFA-200. Besides, lower PDW and MPV may be available markers for early diagnosis of KD.

Decreased platelet distribution width predicts a worse prognosis in patients undergoing surgical resection for hepatocellular carcinoma.

Hepatocellular carcinoma (HCC) is the sixth most common malignant tumor and second most common cause of tumor-related deaths worldwide. Activated platelets play a prominent role in tumor. Platelet distribution width (PDW) indicates platelets activation and is altered in malignancies. The aim of this study was to explore the prognostic value of PDW for overall survival (OS) in HCC patients. We retrospectively reviewed 273 HCC patients at a single institution from 2010 to 2014. The relationship between PDW and clinicopathological characteristics was analyzed. Kaplan-Meier curves and multivariate Cox regression analyses were used to evaluate the relationship of PDW with OS. Low PDW levels were observed in 127 (46.5%) out of 273 patients. A significant correlation was found between PDW and liver cirrhosis. Median follow-up was 36 months, survival curves revealed that the patients with increased PDW had significantly shorter survival time than those with normal PDW (p= 0.001). Cox regression analysis demonstrated that PDW was an independent prognostic factor for overall survival (hazard ratio, 2.464; 95% confidence interval [CI], 1.402-4.330, p= 0.001). PDW is significantly associated with OS in HCC. This result suggests activated platelet may affect clinical outcome and warrant continued investigation.

Preoperative Mean Platelet Volume and Platelet Distribution Width Predict Postoperative Sepsis in Patients with Colorectal Cancer.

Purpose Mean platelet volume (MPV) and platelet distribution width (PDW) have been used to reflect the platelet activity in clinics. We assessed initial serum MPV and PDW levels in colorectal cancer (CRC) patients, in predicting the development of sepsis in CRC patients postoperatively. Patients and Methods This study included 220 patients diagnosed with CRC. 55 patients were stratified to one group that developed sepsis postoperatively, and 165 patients were stratified to the other group that did not develop sepsis postoperatively. Clinical and laboratory characteristics were collected 3 days before the operation. Results MPV (p < 0.001) was significantly higher and PDW (p < 0.001) was significantly lower in the sepsis group than in the nonsepsis group. Either MPV or PDW is independently associated with ICU mortality in sepsis patients with CRC. MPV is independently associated with 14-day, 28-day, and 90-day mortality and PDW is independently associated with 90-day mortality in patients with CRC. The prevalence of sepsis increased as MPV tertiles increased (p < 0.001), and the prevalence of sepsis increased as PDW tertiles decreased (p < 0.001). Conclusions Serum MPV and PDW levels between CRC patients with/without sepsis postoperatively are significantly different. The initial serum MPV or PDW levels can potentially serve as a predictor of sepsis in CRC patients postoperatively.

Prognostic Importance of Thrombocyte Indices in Children with Carbon Monoxide Poisoning

\n Prognostic importance of thrombocyte indices in children with carbon monoxide poisoning \n \n Abstract \n \n Objective: Carbon monoxide (CO) poisoning is still being a major cause of morbidity and mortality all over the world. Although the role of platelet functions in CO poisoning is not clear, increased platelet activation and aggregation had been reported previously. Increased thrombotic tendency due to endothelial damage, increased platelet stickiness, and alterations in the fibrinolytic pathway occurs in CO poisoning. The aim of our study was to determine whether platelet indices provide clinical benefit or not in children with CO poisoning. \n \n Materials and Methods: We retrospectively reviwed the records of children with the diagnosis of CO poisoning who admitted to the pediatric emergency departments of Konya Beyhekim State Hospital and Necmettin Erbakan University Meram Medical Faculty. A total of 92 children with CO poisoning and 62 age- and gender-matched healthy controls were included in the study. \n \n Results: While mean platelet volume (MPV) and platelet distribution width (PDW) levels were significantly higher (9,34±0,55 vs 9,78±0,97fL, p=0.001 ; 11,46±2,64 vs 10,57±1,41, retrospectively, p=0.007), platelet count and plateletcrit (PCT) (324,05±82,07 vs 357,27±89,70 x109 p=0.015 ; 0,31±0,06 vs 0,33±0,07, retrospectively, p=0.039) were significantly lower in patients with CO poisoning. MPV levels were also significantly higher in patients with a carboxy hemoglobin (COHb) level higher than 20, when compared with COHb levels between 10-20 (9,40±0,84 vs 10,08±1,22 fL, p=0.003). \n \n Conclusion: Our results showed that platelet indices MPV and PDW are markedly elevated in patients with CO poisoning while platelet count and PCT were decreased. MPV and PDW levels, which reflect the changes in platelet activation and function, may predict the development of especially thromboembolic complications in the course of CO poisoning. MPV and PDW levels may be useful in prognostic estimation of CO poisoning. \n \n Keywords: carbon monoxide; children; platelet indices; poisoning \n \n \n

Prognostic values of platelet-associated indicators in advanced breast cancer

Background: Breast cancer is the leading cause of cancer death in the female population. Platelet-related indicators can be used as prognostic markers of cancers. The present study investigated the potential values of platelet count (PLT), plateletcrit (PCT), mean platelet volume (MPV), platelet distribution width (PDW), and platelet to lymphocyte ratio (PLR) in the prognosis of advanced breast cancer (ABC). Methods: This retrospective study recruited 94 locally advanced or metastatic breast cancer cases who had histologic and cytologic evidence. The patients were divided into two groups according to the median baseline values of PLT, PCT, MPV, PDW, and PLR. To evaluate the individual value changes after treatment, we introduced the concept of post/pre-treatment ratio (≤1 indicated value was not increased after treatment, while >1 suggested increased value). Responses to chemotherapy, including partial response (PR), stable disease (SD), and progressive disease (PD), were recorded. Kaplan-Meier curves were constructed to show overall survival (OS). Univariate and multivariate Cox regression analysis models were employed to identify the independent risk factors Results: A lower baseline PCT level was correlated with a better OS. A lower baseline PLT level and a higher baseline PDW level were related to better chemotherapeutic efficacy of breast cancer patients. Univariate analysis and multivariate analysis both revealed that a higher baseline PCT level was an independent prognostic factor for OS. Conclusions: PCT level may be a potential prognosis factor for ABC.

Mean platelet volume and platelet distribution width levels in discoid lupus erythematosus patients: A case-control study

Aim: Platelets (PLT) play an important role in inflammatory reactions and immune responses. This study aims to evaluate PLT and PLT parameters in patients with discoid lupus erythematosus (DLE), which is characterized by inflammation. Methods: In this case-control study, a total of 125 participants, consisting of 60 DLE patients and 65 healthy controls, were selected to participate. PLT, platelet distribution width (PDW), mean platelet volume (MPV), plateletcrit (PCT), the ratio of neutrophils to lymphocytes (NLR) and the ratio of platelets to lymphocytes (PLR) were studied retrospectively in both groups. Results: The mean age of the patient group was 47.30 (15.14) years, and the mean age of the control group was 38.08 (13.33) years. There were no statistically significant differences between the PLT, PDW, MPV, PCT, NLR and PLR levels in DLE patients and healthy controls (P=0.365, P=0.988, P=0.160, P=0.851, P=0.898 and P=0.887, respectively). Conclusion: To the best of our knowledge, there are no reports on both PLT, PDW, PCT, NLR, PLR and MPV in patients with DLE. We did not find a significant difference in the DLE group. PLT parameters are low-cost tests that can be used to define inflammation levels in inflammatory diseases. Further prospective studies on this subject will contribute to this work.

Prognostic values of platelet-associated indicators in advanced breast cancer.

BackgroundBreast cancer is the leading cause of cancer death in the female population. Platelet-related indicators can be used as prognostic markers of cancers. The present study investigated the potential values of platelet count (PLT), plateletcrit (PCT), mean platelet volume (MPV), platelet distribution width (PDW), and platelet to lymphocyte ratio (PLR) in the prognosis of advanced breast cancer (ABC).MethodsThis retrospective study recruited 94 locally advanced or metastatic breast cancer cases who had histologic and cytologic evidence. The patients were divided into two groups according to the median baseline values of PLT, PCT, MPV, PDW, and PLR. To evaluate the individual value changes after treatment, we introduced the concept of post/pre-treatment ratio (≤1 indicated value was not increased after treatment, while >1 suggested increased value). Responses to chemotherapy, including partial response (PR), stable disease (SD), and progressive disease (PD), were recorded. Kaplan-Meier curves were constructed to show overall survival (OS). Univariate and multivariate Cox regression analysis models were employed to identify the independent risk factorsResultsA lower baseline PCT level was correlated with a better OS. A lower baseline PLT level and a higher baseline PDW level were related to better chemotherapeutic efficacy of breast cancer patients. Univariate analysis and multivariate analysis both revealed that a higher baseline PCT level was an independent prognostic factor for OS.ConclusionsPCT level may be a potential prognosis factor for ABC.

Neutrophil-Lymphocyte Ratio and the Platelet Parameters as Biomarkers of Atopic Dermatitis Severity in Children

Background: Atopic dermatitis (AD) is a chronic inflammatory skin disease with a specific immune and inflammatory mechanism. This study investigates inflammatory biomarkers and their correlation with disease severity. Objectives: The aim of this study is to determine the relationship between platelet parameters [(mean platelet volume (MPV), platelet distribution width (PDW)], the neutrophil-lymphocyte ratio (NLR), the platelet-lymphocyte ratio (PLR), and AD severity in children. Methods: In this retrospective study, we reviewed patients diagnosed with AD and a healthy control group at the department of pediatrics at Health Sciences in a university-affiliated hospital in Istanbul, Turkey, between January 2015 and December 2016. The study included 79 children with AD and 75 healthy controls. AD severity was graded using the Scoring Atopic Dermatitis (SCORAD) index. Complete blood count was measured, and NLR and PLR were calculated. NLR, PLR, MPV, PDW were compared between AD patients and healthy controls, and the correlations between these indexes and clinical characteristics were analyzed. Results: No significant difference was observed between patients and controls for MPV, NLR, and PLR (P = 0.708, P = 0.340, P = 0.179, respectively). In the AD group, PDW was lower than controls (17.39 ± 1.45, 18.04 ± 1.65, P = 0.006). In the severe AD group, MPV was higher (7.62 ± 1.81, 6.64 ± 1.16, P = 0.035) and PDW was lower than in the mild AD group (16.52 ± 1.49, 17.93 ± 1.44, P = 0.0001). Conclusions: Mean MPV and PDW levels are correlated with atopic dermatitis severity in children.

Platelet distribution width, platelet count, and plateletcrit in diabetic retinopathy: A systematic review and meta-analysis of PRISMA guidelines.

Background:Screening and diagnosis of diabetic retinopathy (DR) mainly depends on fundus examination, which is not an intuitive and simple screening or diagnostic method. Recently, the relationship between platelet parameters and DR has become a hot topic. Whether platelet parameters have clinical value in DR is controversial.Methods:Literature was retrieved by formal search of electronic databases (PubMed, Embase, Cochrane library, Scopus, and CNKI) and by hand searching of reference lists of related articles from the beginning of building database to December 2017. Review manager 5.3 was utilized to deal with statistical data. This study was registered at International Prospective Register of Systematic Reviews (number: CRD42018093773).Results:This study included 1720 DR patients, 1477 type 2 diabetic mellitus (T2DM) without DR patients and 1456 health controls in 21 eligible studies. We found there was significant increase of platelet distribution width (PDW) level in the comparison of DR versus Control group (standard mean difference [SMD] [95% confidence interval [CI]] = 1.04 [0.68, 1.40]) and DR versus T2DM without DR group (SMD [95% CI] = 0.68 [0.40, 0.95]). For platelet count (PLT), it showed obvious decrease in the comparison of DR versus T2DM without DR group (SMD [95% CI] = −0.26 [−0.49, −0.03]) and no difference in comparison of DR versus Control (SMD [95% CI] = −0.26 [−0.51, −0.00]). Subgroup analysis showed that significant result of PDW level appeared in China and Turkey in all comparisons, while similar results of PLT only in China. In addition, PDW level was different in various DR-subtypes, obvious high level in proliferation DR.Conclusions:We concluded that the guiding significance of PDW and PLT in diagnosis and monitor of DR, and especially, application of PDW to PDR management may have potential sense.