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Cattle health and welfare are monitored via the analysis of the haematological profile, and it shows cattle's ability to adapt to changing environmental conditions, pregnancy and lactation; profile changes also indicate reproductive disorders. The literature lacks reports of the examination of the haematological profile in cows up to the 50th day of pregnancy (dop). Therefore, this research examined that in cows up to this pregnancy stage. A total of 101 Polish Holstein-Friesian black-and-white cows were divided into groups. The control groups consisted of non-pregnant heifers (group C00) and non-pregnant cows (group C0), and the experimental groups were pregnant heifers (group T1 at dop ≤ 28 and group T2 at dop ≥ 29–dop < 45) and pregnant cows (group T3 at dop ≥ 29–dop ≤ 50). In addition, the T3 group was divided into cows pregnant for up 45 dop and cows between 45 and 50 dop. Blood samples were collected in March and April 2021 from each animal and analysed. A transrectal ultrasound examination was performed to detect and confirm pregnancy. Statistically significant differences (P ≤ 0.01) between the group of cows at dop < 45 dop and those at dop ≥ 45–dop ≤ 50 dop were noted in granulocyte percentage (GRA%), white and red blood cell counts (WBC/RBC), platelets (PLT), platelet distribution width (PDW), haematocrit (HCT) and lymphocyte percentage (LYM%). No statistically significant differences were found in the mean corpuscular haemoglobin, monocytes (MON), monocyte percentage (MON%), mean platelet volume (MPV), thrombocrit or red blood cell distribution width (RDW). Similar statistically significant differences (P ≤ 0.01) emerged between the groups of heifers in PLT, GRA, RBC, lymphocytes, LYM% and HCT, and no significant differences were found between MPV, MON, MON% or RDW. Examining the haematological profile in high-yielding cattle is vital in maintaining herd profitability and high reproduction, which depend on the quick diagnosis of disorders facilitated by haematology. This study analysed the haematology profile of dairy cattle at dop ≤ 50 for the first time, indicating changes in lymphocyte levels, which suggests that the animals experienced direct stress during the study. [ABSTRACT FROM AUTHOR]

Purpose: This study aimed to explore whether the mean platelet volume/platelet count ratio (MPR) has predictive value for the occurrence and prognosis of acute ischemic stroke (AIS) in hemodialysis patients.Patients and Methods: A total of 402 patients undergoing maintenance hemodialysis were screened and 259 were enrolled in this study. The receiver operating characteristic curve and area under the curve (AUC) were used to evaluate the predictive power of the models. The patients enrolled in this study were divided into three groups based on the tertiles of the MPR value (Q1, Q2, and Q3). Kaplan-Meier curves were used to investigate the association between the MPR and AIS-free survival in hemodialysis patients. Chi-square analysis was performed to explore the association between the MPR and AIS outcomes in hemodialysis patients. And the AIS outcome was assessed using the modified Rankin Scale (mRS).Results: MPR had a predictive value for the occurrence of AIS (AUC=0.814) in hemodialysis patients with a high sensitivity and specificity. AIS-free survival rates in the MPR Q1, MPR Q2, and MPR Q3 groups were 0.930, 0.701, and 0.360, respectively. The proportion of patients with good outcomes (mRS 0– 2) was significantly greater among patients in the MPR Q1-Q2 group than in the MPR Q3 group (0.844 vs 0.745, p < 0.001).Conclusion: The MPR can be used as a good predictor of AIS in patients undergoing hemodialysis. Patients on hemodialysis with increased MPR levels had a higher incidence of AIS and poorer functional outcomes than those with low MPR levels. [ABSTRACT FROM AUTHOR]

Copyright of Namık Kemal Tıp Dergisi is the property of Galenos Yayinevi Tic. LTD. STI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Clot retraction results from retractions of platelet filopodia and fibrin fibers and requires the functional platelet αIIbβ3 integrin. This assay is widely used to test the functions of platelets and fibrinogen as well as the efficacy of fibrinolysis. Changes in clot retraction have been found in a variety of hemostatic abnormalities and, more recently, in arterial thrombosis. Despite its broad clinical use and low cost, many aspects of clot retraction are poorly understood. In the present study, we performed two clinical standard clot retraction assays using whole-blood and platelet-rich plasma (PRP) samples to determine how clot retraction correlates with platelet counts and mean volume, the density of αIIbβ3 integrin and PLA genotypes, and plasma fibrinogen levels. We found that clot retraction was affected by platelet counts, but not mean platelet volume. It correlated with the surface density of the integrin αIibβ3, but not PLA genotypes. These results indicate that clot retraction measures a unique aspect of platelet function and can serve as an additional means to detect functional changes in platelets. [ABSTRACT FROM AUTHOR]

Background: Insulin has an inhibitory effect on platelets; however, this is compromised in circumstances of Insulin Resistance (IR), leading to platelet hyperactivity. Platelet parameters such as mean platelet volume, platelet count, and platelet distribution width are simple and accessible potential biomarkers for the early diagnosis and prognosis of IR. Therefore, the aim of this review is to provide insight on the current status of knowledge regarding IR-induced platelet hyperactivation and the potential biomarker role of platelet parameters.Methods: This narrative review included articles published in the English language. Searches were carried out at the electronic databases PubMed and Google Scholar. The search strategy was done by combining key words and related database-specific subject terms (Mesh terms) with the appropriate Boolean operators.Conclusion: Increasing insulin sensitivity in insulin resistant patients would possibly cause substantial reduction in platelet activation, which in turn reduce complications related with platelet hyperactivation. The standard methods to measure IR are not frequently employed in clinical practice due to their expensiveness and complexity. Thus, early detection of IR using a simple and more widely available biomarkers such as mean platelet volume, platelet count and platelet distribution width would be beneficial. Particularly in developing countries where resource scarcity is a major constraint of the health sector, utilizing such easy and affordable biomarkers may have a crucial role. [ABSTRACT FROM AUTHOR]

Early differentiation of cases with severe acute cholangitis is important for optimal treatment. In this study, it was aimed to elucidate the prognosis with complete blood count parameters among patients with acute cholangitis. Clinical and laboratory findings of 200 patients with acute cholangitis at Ankara City Hospital between February 2019 and October 2019 were retrospectively analyzed. Neutrophil-lymphocyte ratio, platelet-lymphocyte ratio, red cell distribution width and mean platelet volume levels were recorded from blood analysis at the time of admission. According to Tokyo guidelines, patients were divided into 3 groups as mild, moderate and severe acute cholangitis. In order to evaluate the prognosis, the length of hospital stay, the status of hospitalization in the medical intensive care unit and blood culture growth were investigated with hematological parameters. Of the 200 patients, 109 (54.5%) were male and 91 (45.5%) were female. According to Tokyo criteria, 17 patients' status was evaluated as severe, 70 as moderate and 113 as mild acute cholangitis. The area under the receiver operating characteristics curve for neutrophil-lymphocyte ratio measurements was statistically significant in distinguishing the mild vs moderate disease (AUC=0.694; 95% Confidence Interval (CI):0.586-0.802 and p=0.008), with a diagnostic accuracy rate of 59.5%. The diagnostic accuracy rate of red cell distribution width (AUC=0.603; 95% CI: 0.523-0.683 and p=0.013) was 61.5% and the diagnostic accuracy rate of mean platelet volume (AUC=0.582 95% CI: 0.502-0.662 and p=0.047) was 57.5% achieving a statistical significance. Neutrophil-lymphocyte ratio, red cell distribution width and mean platelet volume analysis is routinely obtained from complete blood count almost in every patient. These are inexpensive and easily accessible diagnostic markers and thus, might be useful in the differentiation of mild and severe acute cholangitis patients and their prognosis. [ABSTRACT FROM AUTHOR]

Copyright of Van Health Sciences Journal / Van Sağlık Bilimleri Dergisi is the property of Van Yuzuncu Yil University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Aim: This study was designed to investigate the prognostic value of the platelet volume index in patients with invasive breast cancer (IBC). Methods: A total of 524 patients with IBC were enrolled in this study, with a median follow-up time of 6.76 years. The relationship between platelet volume indices and breast cancer prognosis was analyzed. Results: There is a strong correlation between a higher platelet distribution width-to-platelet count ratio (PDW/P) and poorer disease-free survival (DFS) in patients with IBC. The DFS rate was significantly lower among individuals with elevated PDW/P ratios compared with those with lower ratios. Conclusion: The PDW/P ratio is an independent risk factor for predicting DFS in patients with IBC. Platelet volume index is an inexpensive and convenient biomarker to measure in clinical practice, with the potential to aid in prognostic risk assessment and guide personalized diagnosis and treatment choices for invasive breast cancer. [ABSTRACT FROM AUTHOR]

Background and Objectives: There are no studies regarding comparative analysis of hematological parameters in patients with psoriasis (PsO) and atopic dermatitis (AD), whereas studies examining serum biomarkers of immunity and inflammation in these entities are scarce and contradictory. We aimed to compare such parameters in patients with PsO and AD. Materials and Methods: Patients with PsO (n = 40) and AD (n = 40) were consecutively included in this cross-sectional study. Hematological parameters and biomarkers of immunity and inflammation (interferon-gamma (IFN-γ), interleukine (IL)-22 and C-reactive protein (CRP)) were determined. Results: While the mean corpuscular volume (MCV) was higher in the PsO group vs. the AD group (p < 0.05), there was no difference in the other examined parameters between groups. A higher neutrophil-to-lymphocyte ratio (NLR) was found in patients with AD > 50 years vs. patients with PsO of similar age (p < 0.05). Higher IL-22 levels were found in patients with AD < 50 years vs. patients with PsO of similar age (p < 0.05). Lower IL-22 levels were found in patients with AD > 50 years vs. patients with AD < 50 years (p < 0.05). Patients with PsO and with comorbidities had lower platelets (PLT), plateletcrit (PCT) and platelet-to-lymphocyte ratio (PLR), whereas lymphocytes, red cell distribution width-to-PLT ratio (RPR) and mean platelet volume/PLT ratio (MPR) were higher vs. PsO patients without comorbidities. Patients with AD and with comorbidities had lower PCT and PLR, whereas RPR was higher vs. AD patients without comorbidities. Conclusions: A higher pro-inflammatory state (i.e., higher NLR and IL-22) was found in AD vs. PsO in age-specific groups. A higher pro-inflammatory state (i.e., as reflected by platelet indexes) was found in both diseases with comorbidities. [ABSTRACT FROM AUTHOR]

Obesity usually results from excessive nutrition, which causes a defect in the functions of the immune system as a result of the accumulation of fat, as excess fat in the body is associated with changes in the number of white blood cells, red blood cells, and platelets, and is associated with changes in the function of the thyroid gland, where obesity affects the permeability of vessels It is also related to many metabolic disorders, including iron balance disorders, so many surgical techniques have been developed to treat obesity, including the laparoscopic sleeve gastrectomy, which is one of the common procedures for treating obesity and has gained great popularity due to its great impact on weight. This study aimed to study the complications and some side effects (positive and negative) of sleeve gastrectomy. Five milliliters of blood samples were collected from 43 obese under laparoscopic sleeve gastrectomy at Al-Batool Al-Ahly Hospital and Al-Ghadeer Center in Al-Najaf Governorate from September 2022 to March 2023, included 18 male and 25 female as well as 19 obese did not went under sleeve gastrectomy included 18 males and 11 females were taken as a control group. The age of all obese participated in this study was (60-18) years and there body mass index greater than 35 kg / m², (19) obese people (8) males and (11) : The results showed a showed a insignificantly decrease in Ferritin protein levels and an increase in Thyroid stimulating hormone (TSH) levels in the patient group compared to the control group moreover, this study showed that there were no significant differences (P>0.05) in the following indicators hemoglobin (Hb), hematocrit (HCT), Mean corpuscular volume (MCV), and mean corpuscular hemoglobin (MCH), while there was increase in Platelets (PLTs), mean platelet volume (MPV), mean corpuscular hemoglobin concentration (MCHC), Red blood cell (RBC) s, and a decrease in white blood cell (WBC), lymphocytes, and Neutrophils in the patient group compared to the control group, depend on the gender of the patient group, the results showed a significant decrease in both ferritin and each of Hgb. RBCs, HCT, MCV, MCH and MPV, and a significant increase in the level of TSH in females compared to males as well as there were some changes in the studied parameters of sleeve gastrectomy patients divided according to the period after the operation. [ABSTRACT FROM AUTHOR]

Introduction: To determine the prognosis and fetomaternal outcome in eclampsia and pre-eclampsia, a simple and costeffective approach is to assess the Red cell Distribution Width (RDW) and platelet count. RDW, Neutrophil-to-Lymphocyte Ratio (NLR), Platelet-to-Lymphocyte Ratio (PLR), and platelet markers such as Mean Platelet Volume (MPV) have been the subject of research. Aim: To compare the variation of RDW, NLR, PLR, and platelet indices between women with pre-eclampsia and gestational age-matched healthy controls. Materials and Methods: A cross-sectional study was conducted among 208 pregnant women (104 with pre-eclampsia and 104 controls) at the Department of Obstetrics and Gynaecology, Bangalore Medical College and Research Institute, Bengaluru, Karnataka, India, from January 2020 to June 2021. RDW, NLR, PLR, and platelet indices were analysed after obtaining detailed history, conducting clinical examinations, and relevant investigations. An Independent t-test was used as a test of significance to identify the mean difference between the two quantitative variables. Results: The RDW among cases was 17.05±4.01, whereas among controls, it was 15.09±1.86. The mean age of subjects among case group was 25.72±4.741 years, while in the control group it was 23.25±3.803 years. There was a significant difference in mean Red cell Distribution Width- Coefficient of Variation (RDW-CV) between the two groups. The MPV among cases was 9.86±1.14, while among controls, it was 8.92±1.40 (p-value=0.001). The PDW among cases was 11.30±2.20, and among controls, it was 12.72±3.50. The mean NLR among cases was 5.92±4.94, whereas among controls, it was 4.59±2.22. There was a significant difference in mean platelet count, MPV, PDW, and NLR between the two groups. Conclusion: According to the findings of the current study, RDW, NLR, and MPV were all shown to be higher in women with pre-eclampsia. Additionally, pre-eclamptic women consistently exhibited decreased PDW and platelet counts.

Background: Respiratory distress is a serious condition affecting preterm neonates. The present study was designed to evaluate the association between mean platelet volume (MPV) and adiponectin (APN) levels and the development of respiratory distress syndrome (RDS) in preterm neonates. Methods: This prospective cohort study was conducted at a tertiary hospital. The target population was preterm neonates (≤ 34 weeks) admitted to the incubator and diagnosed with RDS. A control group was recruited and composed of age-matched neonates seen at the delivery room and required no admission or ventilatory support. Blood samples were withdrawn on days 1 and 7 of life for a complete blood count and another one for APN level measurement . Results: The study group showed a higher MPV at day 1 and day 7 than the control group (P

Objective: Coronary artery aneurysm and ectasia develop in approximately 15% to 25% of children with untreated Kawasaki disease (KD). Atypical KD has a higher incidence of coronary artery involvement compared to typical KD. Our aim in this study was to identify new markers to support early diagnosis and prevent complications associated with delayed treatment in atypical KD. Method: The patients' demographic characteristics, presenting complaints, clinical findings, mean platelet volume (MPV), plateletcrit (PCT), and N-terminal brain natriuretic peptide (NT-proBNP) levels were analyzed. Coronary artery abnormalities were evaluated using two-dimensional echocardiography. Results are expressed as mean (+- standard deviation). Results: Sixty children between the ages of 3 and 96 months who were diagnosed with atypical KD were included. Forty consecutive normal children were included as a control group. NT-proBNP, MPV, and PCT values were 381.7 (+-272.7) pg/mL, 5.8 (+-0.93) fL, and 0.266% (+-0.92%) in the patient group and 48.5 (+-28.5) pg/mL, 8.29 (+-1.12) fL, and 0.227% (+-0.78%) in the control group, respectively (p

Inflammatory proteins activate platelets, which have been observed to be directly related to cancer progression and development. The aim of this systematic review is to investigate the possible association between Mean Platelet Volume (MPV) and cancer (diagnostic capacity of MPV, relation to survival, the severity of the disease, and metastasis). A literature review was performed in the online database PubMed and Google Scholar for the period of 2010–2022. In total, 83 studies including 21,034 participants with 12 different types of cancer (i.e., gastric cancer, colon cancer, esophageal squamous cell carcinoma, renal cancer, breast cancer, ovarian cancer, endometrial cancer, thyroid cancer, lung cancer, bladder cancer, gallbladder cancer, and multiple myeloma) were identified. The role of MPV has been extensively investigated in several types of cancer, such as gastric, colon, breast, and lung cancer, while few data exist for other types, such as renal, gallbladder cancer, and multiple myeloma. Most studies in gastric, breast, endometrium, thyroid, and lung cancer documented an elevated MPV in cancer patients. Data were less clear-cut for esophageal, ovarian, and colon cancer, while reduced MPV was observed in renal cell carcinoma and gallbladder cancer. Several studies on colon cancer (4 out of 6) and fewer on lung cancer (4 out of 10) indicated an unfavorable role of increased MPV regarding mortality. As far as other cancer types are concerned, fewer studies were conducted. MPV can be used as a potential biomarker in cancer diagnosis and could be a useful tool for the optimization of treatment strategies. Possible underlying mechanisms between cancer and MPV are discussed. However, further studies are needed to elucidate the exact role of MPV in cancer progression and metastasis.

This document is a response to a recent publication titled "Lymphopenia in Chronic Spontaneous Urticaria is Linked to Basopenia and Eosinopenia." The authors of this response commend the meticulous documentation of data in the original publication and find the hypothesis that reduced lymphocyte counts could indicate autoimmune chronic spontaneous urticaria (CSU) intriguing. However, they critically examine the data presented and question the direct association between lymphopenia and autoimmune CSU. They highlight weak correlations and lack of significant associations with key markers, suggesting that lymphopenia may not be a reliable marker for autoimmune CSU. Further research is needed to establish the diagnostic and prognostic value of lymphocyte counts in diverse CSU cohorts. [Extracted from the article]

Bronchopulmonary dysplasia (BPD) is a neonatal chronic lung disease characterized by an arrest in alveolar and vascular development. BPD is secondary to lung immaturity, ventilator-induced lung injury, and exposure to hyperoxia in extremely premature infants, leading to a lifelong impairment of lung function. Recent studies indicate that the lung plays an important role in platelet biogenesis. However, the dynamic change of platelet production during lung development and BPD pathogenesis remains to be elucidated. We investigated the dynamic change of platelet parameters in extremely premature infants during BPD development, and in newborn rats during their normal development from birth to adulthood. We further studied the effect of hyperoxia exposure on platelet production and concomitant pulmonary maldevelopment in an experimental BPD rat model induced by prolonged exposure to hyperoxia. We detected a physiological increase in platelet count from birth to 36 weeks postmenstrual age in extremely premature infants, but platelet counts in extremely premature infants who developed BPD were persistently lower than gestational age-matched controls. In line with clinical findings, exposure to hyperoxia significantly decreased the platelet count in neonatal rats. Lung morphometry analysis demonstrated that platelet counts stabilized with the completion of lung alveolarization in rats. Our findings indicate a close association between platelet biogenesis and alveolarization in the developing lung. This phenomenon might explain the reduced platelet count in extremely premature infants with BPD.

Mean platelet volume (MPV), which represents the average platelet size in femtoliters, has emerged as a reliable biomarker in several systemic and chronic disorders. However, its relationship with disease characteristics in large series of patients with systemic lupus erythematosus (SLE) has not been exhaustively studied to date. In the present work, we aimed to analyze how disease characteristics, including disease activity and cumulative damage, relate to MPV in a well-characterized series of SLE patients. In total, 179 patients with SLE and 181 age- and sex-matched healthy controls were recruited. Complete blood counts including MPV were assessed. Linear multivariable analysis was performed to evaluate the relationship between MPV and SLE disease characteristics, including composite scores of disease activity and damage. MPV was significantly lower in patients with SLE compared to controls after multivariable analysis (beta coefficient, −0.7 [95% confidence interval, −1.1 to −0.3)] fL, p < 0.001). Although the SLEDAI disease activity index was not related to MPV, the SLICC score measuring cumulative disease damage was significantly associated with lower MPV values after adjustment for covariates. Elements of the SLICC score that were associated with lower MPV levels were those pertaining to the kidney, peripheral vascular, and musculoskeletal manifestations of the disease. In conclusion, MPV is lower in patients with SLE compared to matched controls. This MPV downregulation is primarily due to the renal, peripheral vascular and musculoskeletal manifestations of the disease. MPV may represent a biomarker of accrual disease damage in SLE.

Da-Xiong Zeng Department of Pulmonary and Critical Care Medicine, Dushu Lake Hospital Affiliated to Soochow University, Medical Center of Soochow University, Suzhou, People’s Republic of ChinaCorrespondence: Da-Xiong Zeng, Department of Pulmonary and Critical Care Medicine, Suzhou Dushu Lake Hospital, No. 9, Chongwen Road, Suzhou, 215100, People’s Republic of China, Email zengdaxiong@suda.edu.cn

Abstract Background There is a growing interest in the role of immune and inflammatory responses in mental disorders (MDs). Mean platelet volume (MPV) is an extensively utilized hemogram parameter that reflects systemic inflammation and immune function. Our research sought to determine whether a connection exists between MPV and various types of MDs. Methods We searched PubMed, EMBASE, PsychINFO, and Web of Science for eligible studies from inception to 15 February 2023, supplemented by manual searching the references from relevant articles. We applied standardized mean difference (SMD) and its 95% confidence interval (CI) to estimate the differences in MPV values in patients with MDs compared to controls. Results We analyzed data from 24 surveys with 4843 participants (2450 patients with MDs and 2393 healthy controls). Two‐step meta‐analyses were conducted to estimate the SMD in MPV value between individuals with and without MDs. Higher MPV values were substantially linked to MDs (i.e., depression, anxiety, bipolar disorder, and schizophrenia). Moderator and stratified analyses revealed that the aggregate effects were more robust in specific populations, such as younger patients and those who had not taken antipsychotic medication within the previous month. Conclusions Our findings corroborate the role of inflammatory response in the pathogenesis of MDs and the pharmacological treatment of these conditions. Regarding the considerable heterogeneity among studies, the level of evidence was very low to moderate.

Purpose: This study revealed the utility of mean platelet volume (MPV) as a mortality marker in SARS-CoV-2 infection, as well as its connection with other inflammatory indicators such as procalcitonin (PCT) and neutrophil-lymphocyte ratio (NLR). Methods: A total of 1528 patients (853 males and 653 females; mean age: 64.33 ± 16.36 years; range, 18–100 years) were hospitalized with COVID-19 between March 2020 and December 2022. The patients' demographic and clinical information, including ward and critical care data, were gathered from their medical records. On the first and last days, the PCT, NLR, and MPV values of the patients, who were divided into groups based on their hospitalization and outcomes, were analyzed. Results: When the relevant laboratory data from the first and last days were compared, each group was statistically significant (p

ABSTRACT Objective: To examine the neutrophil-lymphocyte ratio, red cell distribution width and mean platelet volume in patients with febrile seizure and to determine their role in febrile seizure classification. Methods: This was a retrospective hospital-based study conducted among patients aged 5 to 72 months admitted with febrile seizure. Children who had febrile seizures due to upper respiratory tract infection were included in the study. The children were divided into two groups: simple febrile seizures and complex febrile seizures. Patients with a history of febrile status epilepticus, previous convulsions, use of antiepileptic or other chronic drugs, foci of infection other than the upper respiratory tract infection, abnormal biochemical parameters, and chronic mental or physical disease were excluded from the study. Clinical and laboratory findings of the patients were obtained from digital medical records. Results: The records of 112 febrile seizure patients were reviewed, and 89 were grouped as simple and 23 as complex febrile seizures. Although there was no statistically significant difference between the two groups in terms of the mean red cell distribution width values (p=0.703), neutrophil-lymphocyte ratio and mean platelet volume were significantly higher in patients with complex febrile seizures (p=0.034, p=0.037; respectively). Conclusions: This study showed that neutrophil-lymphocyte ratio and mean platelet volume could be practical and inexpensive clinical markers for febrile seizure classification. A similar result could not be reached for red cell distribution width in this study. These findings should be supported by multicenter studies with large samples.

BackgroundPre-eclampsia (PE) is a severe pregnancy complication. Thrombocytopenia and platelet dysfunction are common hematology disorders in PE. Previous studies considered mean platelet volume (MPV), a functional marker of platelets, as a potentially useful predictor for the diagnosis of PE.MethodsPubMed, China Biomedical Literature Database, Chinese National Knowledge Infrastructure, Embase, Wanfang, VIP, and Cochrane Library databases were searched to gather diagnostic trials evaluating the diagnosis of PE using MPV, from their inception to 13 March 2023. We also searched Google Scholar and Baidu.ResultsA total of 22 studies from 20 articles were found. The pooled diagnostic accuracy of the MPV for PE recognition was as follows: sensitivity (SEN) 0.676 [95% confidence interval (CI) (0.658–0.694)], specificity (SPE) 0.710 [95% CI (0.703–0.717)], and diagnostic odds ratio (DOR) 7.012 [95% CI (4.226–11.636)], and the SROC-AUC and Q* indices were 0.7889 and 0.7262, respectively. The pooled SEN, SPE, and DOR of the diagnostic accuracy of MPV for PE before 16 weeks of gestation were 0.707 [95% CI (0.670–0.743)], 0.639 [95% CI (0.611–0.667)], and 4.026 [95% CI (2.727–5.943)], and the SROC-AUC and Q* indices were 0.7278 and 0.6753, respectively. For the interval of truncation values between 9 and 10 fl, the SROC-AUC and Q* indices for MPV were 0.8856 and 0.8162, respectively.ConclusionsAvailable evidence suggests that MPV has a moderate predictive and diagnostic value for PE, particularly in diagnosing after 20 weeks of gestation. The diagnostic accuracy is higher when the MPV cut-off falls between 9 and 10 fl. The sensitivity of MPV alone in diagnosing PE is not high, and the combination of other markers for predictive diagnosis may better differentiate PE.Systematic Review Registrationhttps://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42023425154, identifier: CRD42023425154.

ABSTRACT BACKGROUND: Acute appendicitis is a common surgical emergency worldwide. Recent studies on hematological inflammatory markers concerning acute appendicitis have shown variable results. AIMS: The aim of this study was to evaluate pre-operative values of platelet indices such as mean platelet volume (MPV) and platelet distribution width (PDW), and red cell distribution width (RDW) in relation to the diagnosis of acute appendicitis and their efficacy as predictors of appendicular perforation. METHODS: A prospective observational study of 190 patients diagnosed with appendicitis and who underwent an appendectomy was undertaken and confirmed histopathologically. Preoperatively, blood samples of white blood cells (WBCs), platelet count, MPV, PDW, and RDW were analyzed using a Sysmex XN1000 analyzer machine. RESULTS: Of 190 patients, 169 had acute appendicitis, and 21 had perforated appendicitis. The mean age of patients was 28.04 ± 14.2 years. The male-to-female ratio was 1.5:1. The WBC (p0.05). However, perforated appendicitis had a higher RDW value compared to acute appendicitis, which can be a predictive factor. CONCLUSIONS: The elevated value of MPV and PDW associated with leukocytosis can be used as supportive evidence for the clinical and radiological diagnosis of acute appendicitis and appendicular perforation. Thus, these values can be used as diagnostic cost-effective inflammatory biomarkers.

To examine the effects of two different volume-matched resistance exercise (RE) recovery protocols (passive and active) on platelet indices and hemodynamic variables. Twelve Healthy participants (mean ± SD; 25 ± 3 yrs) completed a traditional resistance exercise (TRE) protocol that included three sets of six repetitions at 80% one repetition maximum (1RM) with two minutes passive recovery between sets, exercises and an interval resistance exercise (IRE) protocol that included three sets of six repetitions at 60%1RM followed by active recovery including six repetitions of the same exercise at 20%1RM. Blood samples for multiple platelet indices were taken before the protocols, immediately-post (IP), and after 1-hour recovery. Hemodynamic variables were measured before, IP, and every five minutes during recovery. Mean platelet volume and platelet large cell ratio P_LCR decreased from baseline to recovery. Heart rate (HR) and rate pressure product (RPP) were augmented at IP following IRE compared to TRE. HR was significantly elevated for 20 minutes after both RE protocols, and RPP recovered by five minutes. Systolic blood pressure was increased at IP compared to baseline and all recovery time points for both RE protocols. Our research demonstrated that both RE protocols, produced transient increases in platelet indices (MPV, and P_LCR) and hemodynamic variables (SBP, HR, and RPP), all of which returned to baseline within an hour. Notably, the IRE protocol elicited a greater increase in HR and RPP compared to the TRE protocol. [ABSTRACT FROM AUTHOR]

Objective: To explore the clinical application value of quantitative electroencephalogram combined with platelet/lymphocyte ratio (PLR), neutrophil/lymphocyte ratio (NLR), and mean platelet volume (MPV)/platelet count (PLT) ratio in the evaluation of efficacy and short-term prognosis of intravenous thrombolytic therapy for acute cerebral infarction (ACI). Methods: 119 patients with ACI who were admitted to Changsha First Hospital from October 2019 to October 2022 were selected as the study objects. According to the efficacy of intravenous thrombolytic therapy, they were divided into effective thrombolytic therapy group and ineffective thrombolytic therapy group.Compare the changes of power ratio index(DTABR), PLR, NLR, MPV/PLT ratio between the two groups. According to the prognosis of patients with ACI, they were divided into good prognosis group and poor prognosis group. Univariate analysis was performed to compare the baseline clinical data in the two groups. Multivariate Logistic regression model was used to analyze the influencing factors of prognosis of ACI intravenous thrombolysis. Receiver operating characteristic curve (ROC) was used to analyze the prognostic efficacy of each index for ACI intravenous thrombolysis. Results: After treatment, DTABR, neutrophilic granulocyte count, PLT, MPV, PLR, NLR and MPV/PLT ratio in the ineffective thrombolytic therapy group were significantly higher than those in the effective thrombolytic therapy group (P＜0.05), while the lymphocyte count was significantly lower than that in the effective thrombolytic therapy group (P＜0.05). Compared with the good prognosis group, the poor prognosis group was significantly increased in age, National Institutes of Health neurological deficit score (NIHSS) at admission, NIHSS score 24 h after thrombolysis, hypertension history ratio, DTABR, neutrophil count, PLT, MPV, PLR, NLR, and MPV/PLT ratio (P＜0.05), the lymphocyte count was significantly decreased (P＜0.05). Logistic regression model showed that increased NIHSS score at admission and 24 h after thrombolysis, increased DTABR, increased PLR, increased NLR and increased MPV/PLT ratio were risk factors for poor prognosis of ACI intravenous thrombolysis(P＜0.05). ROC curve showed that DTABR, PLR, NLR, MPV/PLT ratio combined to predict the prognosis of ACI intravenous thrombolysis was more effective. Conclusion: Quantitative electroencephalogram DTABR, PLR, NLR, MPV/PLT ratio are closely related to the efficacy and short-term prognosis of intravenous thrombolytic therapy for ACI, and which have high predictive value for short-term prognosis. [ABSTRACT FROM AUTHOR]

Background: Recently, a simple scoring system named the Mansoura scoring system was developed to predict spontaneous bacterial peritonitis (SBP) in patients with cirrhosis and ascites. However, the efficacy of this newly developed system has not been extensively investigated. We aimed to validate a new simple scoring system for the rapid diagnosis or exclusion of SBP without paracentesis. Methods: Adult patients with cirrhosis and ascites admitted to Cho Ray Hospital between November 2021 and May 2022 were included. The area under the receiver operating characteristic (AUROC) curve of the Mansoura simple scoring system for predicting SBP was calculated using the Stata software. Other independent laboratory tests for predicting SBP (C-reactive protein [CRP], neutrophil-to-lymphocyte ratio [NLR], and mean platelet volume [MPV]) were assessed and compared using the Mansoura scoring system. Results: A total of 121 patients were included in this study. The Mansoura scoring system showed good performance in predicting SBP in patients with cirrhosis and ascites (AUROC:0.89). At the cut-off ≥ 4 points, the scoring system achieved a specificity of 97.7% with a positive predictive value for the diagnosis of SBP of 93.5%. Multivariate analysis was performed using our data and showed that NLR, CRP level, and MPV were independent factors related to SBP. Conclusion: The Mansoura scoring system demonstrated good performance in predicting SBP in patients with cirrhosis and ascites and may help guide management decisions. [ABSTRACT FROM AUTHOR]

Objective: To determine the efficacy of platelet indices as a tool for differentiation between clonal thrombocytosis and reactive thrombocytosis. Study Design: Cross sectional study. Place and Duration of Study: Department of Pathology, Combined Military Hospital, Lahore Pakistan, from Nov 2019 to Oct 2020. Methodology: Fifty-six subjects were included in Reactive thrombocytosis group and 56 in Clonal thrombocytosis group. Fresh blood in EDTA anticoagulant was analyzed to determine complete blood counts and platelet parameters (Platelet distribution width, mean platelet volume, Platelet large cell ratio, Plateletcrit) using the automated hematological analyzer Sysmex KX-21. Results: Mean age of the patients was 45.76 years with a range of 17-75 years. Assessing the cause of reactive thrombocytosis revealed that 20(35.7%) was infection and 16(28.5%) was iron deficiency anemia. In clonal thrombocytosis group 21(37.5%) were diagnosed with Chronic myeloid leukemia, 13(23.2%) with Essential thrombocythemia and 14(25%) with Polycythemia rubera vera. Platelet indices were compared in clonal thrombocytosis group and the reactive thrombocytosis group. Mean platelet volume, Platelet large cell ratio and Plateletcrit were significantly higher in the clonal thrombocytosis group (p=0.001). Difference in Platelet distribution width was not found to be statistically significant in the two groups (p=0.07) Conclusion: Platelet indices were higher in the clonal thrombocytosis group. Along with platelet count, they can serve as an efficient and cost-effective method in differentiating between clonal and reactive thrombocytosis. [ABSTRACT FROM AUTHOR]

This study aimed to analyze the effects of polymorphisms in GP5 on blood physiological indices of 1065 sheep. The coefficients of variation of the red blood cell count (RBC), hemoglobin concentration (HGB), mean platelet volume (MPV), mean erythrocyte hemoglobin content (MCH), and red blood cell distribution-coefficient of variation (RDW-CV) were greater than 10%, and there was a very significant correlation between the main indices such as RBC, white blood cell, and platelet count (PLT) and most other indices (p < 0.01). qRT-PCR showed that GP5 was expressed in the heart, liver, spleen, lung, kidney, rumen, duodenum, muscle, tail fat, and lymph tissue, with significantly higher expression in the lymph. Subsequently, we detected single nucleotide polymorphisms (SNPs) in GP5 from group, which identified synonymous mutation g.657 T > C in the first exon of GP5. Association analysis showed significant correlations between the SNP and the physiological traits (p < 0.05), in which the RBC, neutrophilic granulocyte (NEUT) and RDW-CV values in sheep with the TC genotype and TT genotype were markedly lower than those in the CC genotype (p < 0.05). Thus, GP5 polymorphisms could be candidate biomarkers to screen blood physiological indices. [ABSTRACT FROM AUTHOR]

Background: ST-segment elevation myocardial infarction (STEMI) is the most common reason for mortality worldwide. Scoring systems such as Syntax score plays a significant role in risk stratification in these patients. Besides, as a simple and easily applicable marker, white blood cell count to mean platelet volume ratio (WMR), which could play a vital role in identifying risky patients, has emerged as an indicator of inflammation in atherosclerotic disease. In the current study, we aimed to investigate the predictive role of WMR for Syntax score in patients with STEMI. Material and Method: Demographics, comorbidities, and laboratory results on the admission of hospitalized 335 patients with STEMI were analyzed. The study population was divided into two groups according to the syntax score median of the study population (Syntax score median=19). Findings were compared between Syntax score <19 and Syntax score ≥19 groups. Results: The Pearson correlation value between WMR and Syntax score was 0.415 (p<0.001). One hundred and sixty four patients were assigned to the Syntax score <19 group, 171 patients were designated as Syntax score ≥19 group. White blood cell count to mean platelet volume ratio was significantly higher in the Syntax score ≥19 group than the Syntax score <19 group [median (IQR), 1.56 (1.28–1.81) vs 1.32 (1.16–1.5), p<0.001]. White blood cell count to mean platelet volume ratio was an independent predictor according to multivariate analysis [Odds ratio (95% CI), 1.26 (1.08–1.47), p=0.002]. Conclusion: In patients with STEMI, WMR is significantly correlated with high syntax score. It could provide supportive data for early risk stratification and optimized approach. Consequently, therapeutic methods may be wellplanned to avoid a poor outcome in these patients. [ABSTRACT FROM AUTHOR]

Background and Objectives: Cryopreserved platelets (cPLTs) can be stored for years and are mainly used in military settings. However, the commonly used cryoprotectant dimethyl sulphoxide (DMSO) has toxic side effects when utilized in high quantities. We developed a novel method to aseptically remove DMSO from thawed cPLTs by dialysis. Materials and Methods: One unit of platelets (N = 6) was mixed with 75 mL of 27% DMSO within 4 days after collection and stored at −80°C for 1 week. The platelet counts, platelet distribution width, mean platelet volume (MPV), platelet activity, platelet release, platelet aggregation, platelet metabolism indicators and platelet ultrastructural features (determined by electron microscopy) of the samples at the pre‐freeze, post‐thaw wash (post‐TW) and 24 h post‐thaw wash (24‐PTW) stages were determined and compared. Results: The DMSO clearance rate from the post‐TW platelets was 95.56 ± 1.3%, and the platelet recovery rate after washing was 74.66 ± 6.34%. The total count, activity, release factors, aggregation and thrombolytic ability of the post‐TW platelets were lower, whereas the MPV and apoptosis rates were higher compared with those of the pre‐freeze platelets. The lactic acid, glucose and potassium ions released from the platelets during washing were filtered away by the dialyser, which significantly reduced their concentration. However, 24‐PTW platelets were metabolically active, resulting in a decrease in pH and glucose content and an increase in lactic acid content. The level of potassium ions remained low after 24 h of storage and washing. The pre‐freeze platelets maintained their normal disc shape and exhibited an open canalicular system (OCS) and a dense tubular system. The cPLTs appeared irregular after washing, with protruding pseudopodia and an extensive OCS, which increased the release of their contents. Conclusion: We developed a novel dialysis method to effectively remove DMSO from cPLTs under aseptic conditions and maintain platelet quality. The clinical efficacy of our method remains to be determined. However, the function of the platelets declined 24 h after washing, making them unsuitable for transfusion. [ABSTRACT FROM AUTHOR]

Objective: To investigate the predictive value of admission mean platelet volume/platelet count ratio (MPV/PLT) and neutrophil percentage to albumin ratio (NPAR) in patients with severe acute pancreatitis (SAP) complicated by acute kidney injury (AKI). Methods: 117 patients with SAP who were admitted to the Department of Intensive Care Medicine of Beijing Shijitan Hospital Affiliated to Capital Medical University from January 2019 to December 2022 were selected, and they were divided into 23 patients in AKI group and 94 patients in non-AKI group according to whether they were complicated with AKI. The MPV/PLT and NPAR on admission were calculated, the influencing factors of SAP complicated with AKI were analyzed by multivariate Logistic regression, and the predictive value of MPV/PLT and NPAR on patients with SAP complicated with AKI was analyzed by receiver operating characteristic (ROC) curve. Results: Compared with non-AKI group, MPV/PLT and NPAR in the AKI group were elevated (P＜0.05). The heart rate and respiratory rate in the AKI group were faster than those in the non-AKI group, the average arterial pressure was lower than that in the non-AKI group, and the lactate dehydrogenase, blood urea nitrogen (BUN) and serum creatinine (Scr) were higher than those in the non-AKI group (P＜0.05). Multiple Logistic regression analysis showed that elevated BUN, Scr, MPV/PLT and NPAR were independent risk factors for patients with SAP complicated with AKI (P＜0.05). ROC curve analysis showed that the AUC of BUN, Scr, MPV/PLT and NPAR combined prediction of patients with SAP complicated with AKI was greater than that of single prediction. Conclusion: Elevated admission MPV/PLT and NPAR are associated with patients with SAP complicated with AKI. Combining MPV/PLT and NPAR on the basis of BUN and Scr can improve the efficiency of predicting patients with SAP complicated with AKI, and which may become an auxiliary predictor index of patients with SAP complicated with AKI. [ABSTRACT FROM AUTHOR]

Remote self-collected capillary blood samples have been proposed as alternative to venous blood samples as an aid in telemedicine. The aim of this work is to compare the preanalytical and analytical performance of these two types of samples and to study the stability of common measurands in capillary blood. Capillary and venous blood samples were collected in parallel from 296 patients in serum tubes to analyze 22 common biochemistry magnitudes after centrifugation and in EDTA tubes to analyze 15 hematologic magnitudes. Quality of the preanalytical process was assessed applying the model of quality indicator. 24 h stability at room temperature was studied by obtaining paired capillary samples. A questionnaire of assessment was conducted. Mean hemolysis index was higher in capillary samples compared to venous blood samples (p<0.001). Regression analysis and difference analysis showed no bias for all studied biochemistry parameters and hematologic parameters, except mean corpuscular volume (MCV), between capillary and venous blood samples. Regarding sample stability, percentage deviation was higher than the corresponding minimum analytical performance specification for ferritin, vitamin D, hematocrit, MCV, mean corpuscular hemoglobin concentration, platelets distribution wide, mean platelet volume and basophils. Finger pricking was perceived as less painful (p<0.05) than venipuncture in participants who undergo more than one blood test per year. Capillary blood can be used as an alternative to venous blood for the studied parameters in automated common clinical analyzers. Cautious should be taken if samples are not analyzed within 24 h from the collection. [ABSTRACT FROM AUTHOR]

Copyright of Ümraniye Pediatri Dergisi is the property of KARE Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background/Aim: Pressure ulcers (PU) pose a significant problem for patients in intensive care. Various factors contribute to the development of pressure sores. The primary focus of treatment is to implement measures that prevent factors such as nutrition and positioning, which can lead to PUs. Therefore, it is crucial to identify parameters that can serve as warning signals for the formation and progression of PU. This study investigates the potential use of hematological parameters as warning signals. Methods: Demographic data, co-morbidities, PU stages, and laboratory parameters of 158 patients hospitalized in the intensive care unit who developed pressure ulcers during their hospital stay were recorded and analyzed. Results: Among the 158 cases included in the study, PUs were more prevalent in patients of advanced age, those with pneumonia, chronic obstructive pulmonary disease (COPD), coronary diseases, and neurodegenerative diseases. Mean platelet volume (MPV) was significantly higher in PU stages 2 and 3 compared to stage 1. However, age, lymphocyte count, monocyte count, neutrophil-to-lymphocyte ratio (NLR), lymphocyte-to-monocyte ratio (LMR), and platelet-to-lymphocyte ratio (PLR) did not exhibit significant differences among the stages of PU (P<0.05). Conclusion: Advanced age, pneumonia, COPD, coronary diseases, and neurodegenerative diseases are identified as risk factors for PU. Although MPV was initially considered a potential, stimulating parameter, the evidence was insufficient. Further research is required to explore this issue. The impact of parameters other than MPV did not show any excitatory signal in this study. [ABSTRACT FROM AUTHOR]

Aim: To determine the relationship between mean platelet volume (MPV) and treatment response of iron deficiency anaemia (IDA) with normal platelet count. Study further aimed to determine changing of platelet parameters treatment response of IDA. Methods: IDA patients (n = 124) and the control group (CG) (n = 124) who fulfilled the inclusion criteria were compared for MPV and platelet parameters. Patients with IDA were divided into two groups as partial and complete response. The partial response to treatment group (PRG) was accepted as haemoglobin level between 10 and 12 g/dL, mean corpuscular volume (MCV) below 80 fL, and ferritin below 15 ng/ml (n = 60). Complete response to treatment group (CRG) was the patients whose haemoglobin was above 12 g/dL, MCV is above 80 fL, and ferritin is above 15 ng/ml (n = 64). Results: The MPV levels of CG (8.81 ± 0.99), PRG (8.80 ± 1.09), and CRG (8.96 ± 0.96) were similar at the beginning of the study. In addition, MPV levels of PRG (8.84 ± 1.08) and CRG (8.96 ± 1.11) with IDA therapy were similar at the end of the study (p > 0.05). When IDA was treated, there was a decrease in plateletcrit, platelet distribution width (PDW), and platelet count from platelet parameters. There was a correlation between MPV level and platelet count in both PRG and CRG (r = − 0.506; p < 0.001), (r = − 0.499; p < 0.001). Conclusion: There is no change in MPV levels before and after treatment when normal platelet count IDA is treated, but there is a decrease in platelet count and an increase in PDW. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Tepecik Education & Research Hospital / İzmir Tepecik Eğitim ve Araştırma Hastanesi Dergisi is the property of Logos Medical Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Herz is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Autism spectrum disorder (ASD) and attention deficit/hyperactivity disorder (ADHD) are associated with immune dysregulation. We aimed to estimate the pro- and anti-inflammatory activity/balance in ASD and ADHD patients at a little-studied adolescent age with respect to sex. We evaluated 20 ASD patients (5 girls, average age: 12.4 ± 1.9 y), 20 ADHD patients (5 girls, average age: 13.4 ± 1.8 y), and 20 age- and gender-matched controls (average age: 13.2 ± 1.9 y). The evaluated parameters included (1) white blood cells (WBCs), neutrophils, monocytes, lymphocytes, platelets, platelet distribution width (PDW), mean platelet volume, and derived ratios, as well as (2) cytokines—interferon-gamma, interleukin (IL)-1α, IL-1β, IL-2, IL-4, IL-6, IL-8, and IL-10, tumor necrosis factor-alpha (TNF-α), and derived profiles and ratios. ASD adolescents showed higher levels of WBC, monocytes, IL-1α, IL-1β, IL-2, IL-4, IL-6, IL-8, and IL-10, macrophages (M)1 profile, and anti-inflammatory profile than the controls, with ASD males showing higher monocytes, IL-6 and IL-10, anti-inflammatory profile, and a lower T-helper (Th)1/Th2+T-regulatory cell ratio than control males. The ADHD adolescents showed higher levels of PDW, IL-1β and IL-6, TNF-α, M1 profile, proinflammatory profile, and pro-/anti-inflammatory ratio than the controls, with ADHD females showing a higher TNF-α and pro-/anti-inflammatory ratio than the control females and ADHD males showing higher levels of IL-1β and IL-6, TNF-α, and M1 profile than the control males. Immune dysregulation appeared to be different for both neurodevelopmental disorders in adolescence. [ABSTRACT FROM AUTHOR]

Background: The diagnosis of immune thrombocytopenia (ITP) is one of exclusion. Immune-mediated rapid platelet breakdown and decreased platelet production are its hallmarks. ITP can appear as a main (separate) condition or as a secondary condition in the context of other illnesses such autoimmune conditions and infections. Material & Methods: Study Design: A prospective and retrospective hospital based observational study. Study area: Department of Pathology, Government Medical College, Kadapa, Andhra Pradesh. Study Period: 1 year. Study population: The samples for the present study were collected from various clinical departments and wards like Medicine, Pediatrics, MICU and PICU. Sample size: The study consisted of 60 cases. Study tools and Data collection procedure: Clinical history was collected from the patients and medical record files. Physical examination of the patients was done to see the clinical manifestations of the disease and to exclude other possible causes of present symptoms. Laboratory studies were conducted to diagnose Idiopathic Thrombocytopenic purpura. Blood was collected using standard phlebotomy procedures. Blood sample was processed in9 automated Hematology cell counter. Platelet count, Mean Platelet Volume (MPV) and Platelet Distribution Width (PDW) values were taken from the counter reading. Peripheral blood smear examination was done for all cases to look for thrombocytopenia lymphocytosis, eosinophilia and presence of blasts. Bone marrow aspiration/biopsy studies were done on selected patients to exclude other known causes of thrombocytopenia like those associated with leukemia, myelodysplasia etc. Indirect Immunofluorescence evaluation of presence of antiplatelet antibodies was performed in selective cases. Results: The most common presentation was with petechiae observed in 23 cases (39%) followed by ecchymoses (11cases,18%), epistaxis (09 cases,15%), hematuria (07 cases,12%) melena (05 cases,8%) and menorrhagia (05 cases,8%). Major serious hemorrhage like intracranial bleeding or hemopericardium was not seen. Conclusion: The majority of youngsters present with an abrupt onset of symptoms and a history of an earlier infection. Women who are childbearing age are the majority of those with chronic ITP. Isolated thrombocytopenia is the defining feature of ITP, and the presence of anaemia or neutropenia should raise the possibility that another illness may be the origin of the low platelet count. [ABSTRACT FROM AUTHOR]

Background: There is a need for platelet products to have the best quality. Apheresis platelet concentrates (PCs) obtained from single-donors PCs (SD-PCs) are considered best but have issues such as feasibility and cost. Buffy-coat pooled PCs (BCP-PCs) are considered an alternative to SD-PCs. This study compares BCP-PCs and SD-PCs for in vitro quality parameters and their changes during storage. Materials and Methods: Fifteen units of BCP-PCs and 15 units of SD-PCs were prepared. In this study, a pool of five buffy coats was prepared. Fifteen units of BCP-PCs were analyzed on day 1 and day 5 of storage, while 15 SD-PCs were analyzed on day 1 while ten units on day 5. The parameters analyzed were volume, hematological parameters, pH, swirling, and sterility. Results: The mean platelets count of SD-PCs was found to be significantly higher as compared to BCP-PCs. White blood cells (WBCs) contamination was significantly lower in BCP-PCs as compared to SD-PCs. The mean pH and mean platelet volume of SD-PCs were significantly lower than BCP-PCs. During storage, the mean platelets count of BCP-PCs was decreased significantly while that of SD-PCs nonsignificantly. The mean WBCs count and pH decreased in both BCP-PCs and SD-PCs significantly. All units in both types of PCs were sterile. Conclusion: Platelet yield was significantly better in SD-PCs, while mean WBCs contamination was significantly lower in BCP-PCs. BCP-PCs may be preferred in place of SD-PCs in case of nonavailability of apheresis, difficulty in finding a willing donor, or when the cost is of consideration. [ABSTRACT FROM AUTHOR]

Background: Severe variations in osmotic pressure are significant contributors to critical patient morbidity and mortality and might also affect platelet volume. We aimed to investigate possible osmotic-induced changes in mean platelet volume (MPV) and their possible effects on platelet aggregation activity (PLAG). Methods: We induced experimental variations of serum osmolality in blood samples from healthy volunteers (heparinized whole blood [WB]) and isolated platelets (platelet-rich plasma [PRP]) by adding isotonic, hypertonic, and hypotonic solutions of saline/water (pH = 7.2–7.4). PLAG was tested in WB samples with impedance aggregometry (IA) and in PRP samples with light transmission aggregometry (LTA) using three agonists: adenosine diphosphate (ADP, 10 μm), thrombin receptor activating peptide (TRAP-6, 10 μm), and arachidonic acid (500 μm). Osmolality was either calculated using a formula or measured directly. Results: We found almost identical osmolalities in WB and PRP preparations. Osmotic stress did not produce significant changes in MPV. In IA testing, the hypotonic challenge of WB preparations produced significant reductions at 50% (p = 0.056) (95% CI: 11.2–2.4, in Ohms) of ADP and at 31% (p = 0.017) (95% CI: 13.4–8.6, in Ohms) of TRAP-6-induced PLAG, respectively. In PRP, we did not observe any variations in PLAG with LTA. Conclusions: We conclude that in vitro hypotonic stress of WB samples has an inhibitory effect on the PAR-1 (TRAP-6-induced) pathway and on the P2Y12 (ADP-induced) pathway and reflects a distinct in vivo effect of hypoosmotic stress on WB human platelet preparations. [ABSTRACT FROM AUTHOR]

Objectives: Platelets play a key role in thrombus formation and propagation and are thus implicated in the pathogenesis and morbidity of cerebral venous sinus thrombosis (CVST). A whole blood count can be used to objectively measure platelet function through platelet indices, namely, platelet distribution width (PDW), mean platelet volume (MPV), and plateletcrit. This study examined how platelet indices (PDW,MPV, and plateletcrit) affect the CVST severity and functional outcome. Materials and Methods: In this prospective, longitudinal, and observational study, 66 patients with CVST from a tertiary care referral center were enrolled. A complete blood count including platelet indices was obtained using an automated hematology analyzer. Patients with and without parenchymal abnormalities on brain imaging were classified as having severe and non-severe CVST, respectively. The modified Rankin Scale (mRS) was used to examine functional outcomes at admission and after 90 days. The patients were categorized into low mRS (0-1) and high mRS (2-6) functional groups. Results: The patients with severe CVST were older (P < 0.05) and exhibited abnormally large PDW (P < 0.05) which were statistically significant. Severe CSVT also had poor functional outcome score both at admission (P < 0.05) and 90 days later (P < 0.05) which were statistically significant. Multiple logistic regression analysis concluded age and PDW as the independent predictors of severe CVST (P < 0.05). In receiver operating characteristic curve analysis, a cutoff value of 16.5 for PDW could predict CVST severity (P < 0.05). Patients with high mRS scores at admission had significantly larger PDW. At 90 days, no association was noted between PDW and mRS scores. MPV and plateletcrit levels were similar in both the severe and non-severe CVST groups and exerted no effect on functional outcomes. PDW was significantly and inversely related to plateletcrit (P < 0.05). Conclusion: Severe CVST and PDW had a positive correlation. During the early phases of admission, PDW levels above a particular threshold were associated with poor functional outcomes; however, no such association was observed after 90 days. MPV and plateletcrit exerted no effect on CVST severity and prognosis. [ABSTRACT FROM AUTHOR]

BACKGROUND AND OBJECTIVES: The long-term effect of regular plateletpheresis on donors has not been characterized. Hence, we planned to study the long-term alterations in hematological, biochemical, and immunological parameters in regular repeat platelet apheresis donors. MATERIALS AND METHODS: Thirty-three healthy voluntary regular repeat apheresis donors presenting for platelet donation, fulfilling the requisite donor selection criteria, underwent sequential analysis of the hematological, biochemical, and immunological parameters over 1 year. RESULTS: A total of 33 regular repeat donors were enrolled in the study; out of these, 22 could be followed up to 3 months, 12 up to 6 months, and 10 donors up to 12 months for their hematological, biochemical, and immunological parameters. Overall, there was no significant change in hematological profile except a rise in platelet count at 3 months (P = 0.023) with no significant difference at 6 and 12 months from the baseline. In addition, serum thrombopoietin levels at 3 months (P = 0.010) and serum erythropoietin at 6 months (P = 0.01) were significantly higher than baseline. Mean platelet volume was significantly higher from baseline at 12 months (P = 0.00). Serum protein, lymphocyte subpopulation, and serum ferritin did not show any significant change from baseline over 12 months of follow-up. However, there was a significant decline (P = 0.00) in serum calcium and an increase in serum magnesium from baseline (P = 0.03) at 12 months. INTERPRETATIONS AND CONCLUSIONS: To conclude, apheresis platelet donation is a safe procedure. However, a complete hematological, biochemical, immunological profile and bone marrow density at regular intervals (3-6 months) are recommended to ensure the safety of regular repeat plateletpheresis donors. [ABSTRACT FROM AUTHOR]

Background: There is no surrogate biological marker for detecting stroke. Because of this, mean platelet volume (MPV) and RDW may be used to predict the occurrence of stroke. Aim: This study aims to see if there is a link between platelet volume and acute ischemic stroke, as well as between red cell distribution width and acute ischemic stroke. Setting and Design: This was a cross‑sectional study from February 2021 to January 2023. Materials and Methods: The present cross-sectional study was conducted to assess the role of mean platelet volume and red cell distribution width in acute ischemic stroke. Statistical Analysis: For the analysis, SPSS version 20 was utilized. Results: A total of 300 patients were included in this study. The small vessel infarct (9.05 ± 1.24 fL) had less MPV than the large vessel infarct (9.10 ± 1.10 fL), but there was no statistically significant difference between the two (P = 0.74). The average red blood cell width was lower in minor stroke infarcts (15.06% ±2.01%) than in large stroke infarcts (15.5% ±7.26%), but no statistically significant difference was found in the study. Fifty‑three (17.67%) patients had a deadly outcome, and 247 (82.33%) had been cured when a final diagnosis was made. Conclusions: Stroke is the world’s leading cause of mortality, caused by cerebral vascular blockage or hemorrhage. However, there is no biological substitute marker for stroke diagnosis. RDW and MPV are potential biomarkers for this function and can forecast the incidence of stroke. [ABSTRACT FROM AUTHOR]

Background. As a neglected piece of cell blood count, platelet indices are readily available in a primary care setting. Current literature aimed at the role of platelet indices in hypertensive disorders is focused mainly on a single platelet index. Objectives. To better clarify alterations in the pattern of platelet indices in hypertensive disorders, we investigated the relation between a set of platelet indices and hypertensive disorders defined by ambulatory blood pressure monitoring (ABPM). Material and methods. This cross-sectional study was conducted on 283 patients referred to the Hypertension Clinic of our hospital. ABPM was performed for all cases, and patients were accordingly classified as hypertensive (61.8%) and non-hypertensive (38.2%), as well as dipper (60%) and non-dipper (40%). Blood samples were collected for cell blood count, and ensuing platelet indices were compared between these groups. Results. The mean level of plateletcrit (PCT) was significantly higher in hypertensive subjects than non-hypertensive individuals (0.235% versus 0.251%, p = 0.03). The difference of mean platelet volume (MPV), platelet distribution width (PDW) and platelet large cell ratio (PLCR) was not significant between hypertensive and non-hypertensive cases. The levels of platelet indices were not significantly different between dipper and non-dipper individuals. The mean MPV and PLCR was significantly higher in hypertensive patients with coexisting diabetes mellitus. Conclusions. We identified a different pattern of platelet indices as “elevated plateletcrit and normal other platelet volume indices” in hypertensive patients. Considering the patterns of alteration in platelet indices, it may be better to describe their role as a biomarker in hypertensive disorders. [ABSTRACT FROM AUTHOR]

(1) Background: The current diagnostic algorithm for acute pulmonary embolism (PE) is associated with the overuse of CT pulmonary angiography (CTPA). An additional highly specific blood test could potentially lower the proportion of patients with suspected PE that require CTPA. The aim was to summarize the literature on the diagnostic performance of biomarkers of patients admitted to an emergency department with suspected acute PE. (2) Methods: Medline and Embase databases were searched from 1995 to the present. The study selection process, data extraction, and risk of bias assessment were conducted by two reviewers. Eligibility criteria accepted all blood biomarkers except D-dimer, and CTPA was used as the reference standard. Qualitative data synthesis was performed. (3) Results: Of the 8448 identified records, only 6 were included. Eight blood biomarkers were identified, of which, three were investigated in two separate studies. Red distribution width and mean platelet volume were reported to have a specificity of ≥ 90% in one study, although these findings were not confirmed by other studies. The majority of the studies contained a high risk of selection bias. (4) Conclusions: The modest findings and the uncertain validity of the included studies suggest that none of the biomarkers identified in this systematic review have the potential to improve the current diagnostic algorithm for acute PE by reducing the overuse of CTPA. [ABSTRACT FROM AUTHOR]

BACKGROUND: There are studies on the determination of hepatic fibrosis with noninvasive markers but data about liver biopsy results and noninvasive markers in patients with chronic hepatitis B (CHB) are limited. The aim of this study is to determine the relationship between pathological findings and noninvasive markers, and to determine the marker that predicts fibrosis in patients with consistently normal serum alanine aminotransferase (ALT) levels, diagnosed with CHB and undergoing liver biopsy. METHODS: A total of 122 patients with CHB, 29 of them with HbeAg (+), aged 30 years and older, HBV DNA > 2000 IU / ml, and serum ALT levels measured four times in the last year, were consistently normal, and 93 of them with HbeAg (-) were included in the study. Demographic characteristics of patients, laboratory parameters, histological activity index (HAI) and fibrosis values obtained in liver biopsy, and noninvasive markers (AP (ageplatelet) index, APRI (AST/Platelet ratio) and FIB-4 score, neutrophil/lymphocyte ratio, mean platelet volume (MPV) and erythrocyte distribution width (RDW) were recorded. RESULTS: The relationship between RDW value and fibrosis was statistically significant in the HbeAg (+) group (p<0.001). The relationship between AP index, APRI and FIB-4 score, neutrophil/lymphocyte ratio and MPV with fibrosis was not statistically significant (>0.05 for each). CONCLUSION: It has been shown that the RDW value can be used to predict fibrosis in CHB patients with normal ALT and HbeAg (+), and the cut-off value for RDW is 12. [ABSTRACT FROM AUTHOR]

Introduction: Patients treated with immune checkpoint inhibitors (ICIs) may not response to treatment and are at risk for immune-related adverse events (irAEs). Platelet function has been linked to both oncogenesis and immune evasion. We studied the association between the change in mean platelet volume (MPV), platelet count, survival, and the risk of developing irAEs in patients with metastatic non-small cell lung cancer (NSCLC) who have received first-line ICI. Methods: In this retrospective study, delta (∆) MPV was defined as the difference between cycle 2 and baseline MPV. Patient data were collected via chart review, and Cox proportional hazard and Kaplan–Meier method were used to assess the risk and estimate median overall survival. Results: We identified 188 patients treated with first-line pembrolizumab, with or without concurrent chemotherapy. There were 80 (42.6%) patients received pembrolizumab monotherapy, and 108 (57.4%) received pembrolizumab in combination with platinum-based chemotherapy. Patients whose MPV (∆MPV ≤ 0) decreased had hazard ratio (HR) = 0.64 (95% CI 0.43–0.94) for death with p = 0.023. Patients with ∆MPV ≤ − 0.2 fL (median), there was a 58% increase in the risk of developing irAE (HR = 1.58, 95% CI 1.04–2.40, p = 0.031). Thrombocytosis at baseline and cycle 2 was associated with shorter OS with p = 0.014 and 0.039, respectively. Conclusion: Change in MPV after 1 cycle of pembrolizumab-based treatment was significantly associated with overall survival as well as the occurrence of irAEs in patients with metastatic NSCLC in the first-line setting. In addition, thrombocytosis was associated with poor survival. [ABSTRACT FROM AUTHOR]