Search Results (178)

Objectives: To evaluate the association between fecal calprotectin (FC) levels and routinely available blood-based inflammatory indices measured during the same clinical episode in pediatric patients, as well as to assess the diagnostic performance of a novel composite parameter, the Gastrointestinal Inflammation Index (GII). Methods: This retrospective cross-sectional study included pediatric patients who underwent simultaneous testing for FC, complete blood count, C-reactive protein, and albumin between 2022 and 2025. Hematological inflammatory indices, including neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), red cell distribution width (RDW), platelet mass index (PMI), systemic immune-inflammation index (SII), and the newly developed GII, were calculated. Correlations between FC and inflammatory indices were analyzed. Receiver operating characteristic (ROC) curve analysis was performed to evaluate diagnostic performance, and multivariate logistic regression was used to identify independent predictors of FC positivity. Results: Elevated FC levels were significantly associated with higher C-reactive protein levels, lower albumin concentrations, and increased values of RDW, PMI, SII, and GII (all p < 0.001). GII scores increased progressively across FC categories. In ROC analysis, GII demonstrated the highest discriminatory ability for predicting FC positivity (AUC = 0.660), followed by SII and PMI. In multivariate logistic regression analysis, only NLR remained an independent predictor of FC positivity (OR = 0.65, 95% CI: 0.44–0.97; p = 0.033). Conclusions: Blood-based inflammatory indices show significant associations with fecal calprotectin levels in pediatric inflammatory bowel disease. The novel GII may reflect the integrated systemic inflammatory burden related to intestinal involvement, while NLR appears to be a robust and practical independent marker. These indices may serve as adjunctive, rapid, and cost-effective supportive tools in clinical decision-making, although their moderate diagnostic performance limits their use as standalone screening markers. Full article

Background: Red blood cell distribution width (RDW) is an accessible prognostic biomarker in cardiovascular disease, but its independent association with clinical outcomes in patients with acute myocardial infarction (AMI) undergoing percutaneous coronary intervention (PCI) remains incompletely characterized, particularly regarding its prognostic value independent of anemia status. Methods: Using the TriNetX US Collaborative Network (70 healthcare organizations; >105 million patients), we identified 84,811 adult AMI patients who underwent PCI between January 2019 and December 2023 and had RDW measured on the index date. Patients were stratified by RDW ≥ 13.5% (high) versus <13.5% (low) and matched 1:1 using propensity scores based on 38 baseline characteristics. The primary outcome was 1-year all-cause mortality, assessed using a 30-day landmark approach. Secondary outcomes included major adverse cardiovascular events (MACE), heart failure, cardiogenic shock, recurrent AMI, cerebrovascular accident, ventricular tachycardia/fibrillation, and cardiac arrhythmia. Results: After matching (32,010 pairs), high RDW was significantly associated with increased 1-year all-cause mortality (HR 1.77, 95% CI 1.62–1.93, p < 0.001). High RDW was also associated with greater risks of MACE (HR 1.12), heart failure (HR 1.24), cardiogenic shock (HR 1.26), recurrent AMI (HR 1.11), cerebrovascular accident (HR 1.16), and cardiac arrhythmia (HR 1.14; all p < 0.01). Findings remained consistent across serial sensitivity analyses and subgroup analyses. Among non-anemic patients, high RDW remained strongly associated with mortality (HR 1.67, 95% CI 1.50–1.85, p < 0.001). Conclusions: Elevated RDW at the time of AMI is independently associated with mortality and adverse cardiovascular outcomes after PCI, including among non-anemic patients. RDW may serve as a readily available tool to support early risk stratification in this population. Full article

Background/Objectives: Acute kidney injury (AKI) remains a significant complication following cardiac surgery, associated with increased morbidity and mortality. The early detection of AKI is limited by the cost, availability, and unclear clinical utility of the current biomarkers. This study aimed to evaluate the red cell distribution width (RDW) on ICU admission as a predictor of postoperative AKI. Methods: We conducted a retrospective analysis of adult patients undergoing isolated coronary artery bypass grafting (CABG) or combined CABG and aortic valve surgery at a tertiary cardiac surgery centre (University Hospital of Siena, Italy) between January 2015 and December 2020. AKI was defined according to the KDIGO criteria. The RDW was measured preoperatively (T0), at ICU admission (T1), and at 24 (T2) and 48 h (T3) postoperatively. Temporal RDW changes (ΔRDW) were also calculated. Multivariate logistic regression identified independent predictors of AKI, and receiver operating characteristic (ROC) analysis evaluated the predictive accuracy. Results: A total of 456 patients were included, with an overall AKI incidence of 31%. Patients developing AKI exhibited significantly higher RDW at all measured time points, especially at ICU admission. Multivariate analysis identified age, RDW (OR 1.19, 95% CI: 1.03–1.37, p = 0.016) and serum creatinine at ICU admission, and elevated lactate at T2 as independent AKI predictors. In subgroup analyses, RDW at ICU admission remained significantly associated with AKI in patients who were not transfused, but not in patients who were. Conclusions: In this study, a high RDW at ICU admission represented an early postoperative marker independently associated with AKI after cardiac surgery, particularly in patients who did not receive transfusion. Full article

Background/Objectives: Antisocial personality disorder (ASPD) is strongly associated with violence, substance use, criminal behavior, and elevated suicide risk. Although inflammatory and metabolic dysregulation have been implicated in severe psychiatric disorders, the biological correlates of impulsivity, aggression, and suicide risk in forensic ASPD populations remain unclear. This study aimed to investigate whether routine hematological, inflammatory, and metabolic parameters are associated with these clinical features. Methods: This cross-sectional study included 57 male individuals diagnosed with antisocial personality disorder (ASPD) who had committed crimes and were referred to the Forensic Psychiatry Department of Elazığ Fethi Sekin City Hospital in Turkey by the court, and 56 age-matched healthy controls. Participants completed standardized assessments of impulsivity (BIS-11), aggression (BPAQ), and suicide probability (SPS). Hematological indices, inflammatory markers, and routine biochemical parameters were analyzed. Group comparisons, correlation analyses, and multivariable logistic regression were performed. Results: Compared with age-matched controls, individuals with ASPD showed markedly higher impulsivity, aggression, and suicide probability, alongside substantially higher rates of substance use, imprisonment history, and suicide attempts (all p < 0.001). Hematological and inflammatory analyses revealed lower red blood cell (RBC) counts and elevated mean corpuscular volume (MCV), red cell distribution width (RDW), C-reactive protein (CRP), neutrophil-to-lymphocyte ratio (NLR), and CRP–albumin ratio (CAR) in the ASPD group (all p < 0.05). Biochemical profiling showed reduced glucose, total protein, albumin, HDL, ALT, and vitamin B12 levels, with increased uric acid levels in ASPD (p < 0.05). Multivariable analysis indicated that being married and having higher education were protective against ASPD, whereas higher uric acid and CAR levels were associated with increased risk. Conclusions: The findings indicate that criminal offenders with ASPD show increased inflammatory markers and altered hematological and biochemical profiles. Routine blood parameters, combined with psychometric assessments, may help identify individuals at higher behavioral risk and support early risk stratification in forensic psychiatric settings, although causal relationships cannot be inferred from this cross-sectional study. Full article

Background/Aim: This study aimed to evaluate the changes in hematological indices following methotrexate (MTX) initiation and assess their correlation with and predictive value for treatment responses in rheumatoid arthritis (RA) patients. Methods: A retrospective study was conducted on 299 DMARD-naïve RA patients who received MTX monotherapy for 12 weeks. Univariate and multivariate logistic regression identified predictors of remission and low disease activity. Correlation analyses assessed relationships between hematological and disease activity changes. Receiver operating characteristic (ROC) curve analysis evaluated the discriminatory ability of hematological parameters. Results: After 12 weeks of MTX, significant decreases were observed in white blood cell (p = 0.025), neutrophil (p = 0.026), hemoglobin (p = 0.001), and platelet counts (p < 0.001), alongside an increase in red cell distribution width (RDW) (p < 0.001). Multivariate analysis identified only baseline DAS28-CRP (OR: 9826.7, p < 0.001) and CRP (OR: 0.45, p = 0.005) as independent predictors for remission, and baseline swollen joint count, DAS28-CRP, and CRP for LDA. Hematological parameters were not independent predictors. ROC analysis revealed neither baseline values nor changes in hematological indices had satisfactory discriminatory power for remission or LDA. Conclusions: Hematological parameter changes do not serve as robust independent predictors for early treatment response. Clinical disease activity indices remain superior for prognostication in DMARD-naïve patients starting MTX. Full article

Background: Small intestinal bacterial overgrowth (SIBO) has been linked to systemic inflammation and vitamin D deficiency, but its independent clinical relevance remains uncertain. Methods: In this cross-sectional study, 162 adults undergoing hydrogen breath testing were evaluated. Serum 25-hydroxyvitamin D [25(OH)D], leukocyte count, red blood cell distribution width—standard deviation (RDW-SD), and C-reactive protein were analyzed. Associations were assessed using unadjusted comparisons and multivariable regression models adjusted for age, sex, and BMI. Hydrogen increment was additionally examined as a continuous variable. Results: In unadjusted analyses, SIBO-positive individuals had lower 25(OH)D levels and higher leukocyte counts. However, after adjustment for age, sex, and BMI, SIBO status was not independently associated with 25(OH)D, leukocyte count, or RDW-SD. BMI was independently associated with leukocyte count, and age with RDW-SD. Hydrogen increment was not correlated with laboratory parameters. Conclusions: SIBO was not independently associated with vitamin D status or systemic hematological markers. Host-related factors, particularly BMI and age, appeared to have a greater influence on laboratory variability than SIBO. Full article

Background and Objectives: Reliable laboratory markers that accurately reflect disease activity in ankylosing spondylitis (AS) are limited. Conventional acute-phase reactants do not consistently correlate with clinical activity. Composite hematological indices derived from complete blood count may better capture systemic inflammatory burden. In this study, we aimed to investigate hematologic parameters in AS and to assess their relationships with disease activity. Materials and Methods: This retrospective observational study included 196 patients with AS. Disease activity was defined as a Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) ≥4. Demographic variables, laboratory parameters, hematological indices, and extra-articular manifestations were evaluated. Variable selection was performed using least absolute shrinkage and selection operator (LASSO) regression with ten-fold cross-validation. Variables with non-zero coefficients were entered into a multivariable logistic regression model. Model performance was assessed using receiver operating characteristic (ROC) curve analysis. Results: Ninety-seven (49%) patients had active disease. LASSO regression identified erythrocyte sedimentation rate (ESR), white blood cell count, red cell distribution width (RDW), platelet-to-lymphocyte ratio (PLR), and selected extra-articular manifestations as relevant predictors. In multivariable logistic regression, ESR (OR 1.03, 95% CI 1.00–1.06), white blood cell count (OR 1.23, 95% CI 1.04–1.46), and PLR (OR 1.01, 95% CI 1.003–1.020) were independently associated with active disease, while RDW showed a borderline association. The model demonstrated good discriminative ability (AUC 0.77, 95% CI 0.69–0.84). Conclusions: PLR is independently associated with disease activity in ankylosing spondylitis and improves discrimination when incorporated into a multivariable model. Easily accessible hematological indices may complement traditional inflammatory markers in the assessment of disease activity in routine clinical practice. Full article

Individuals with C282Y/C282Y in the hemochromatosis HFE gene have increased iron levels, which catalyze the formation of reactive oxygen species, and an increased risk of diabetes. These individuals may have disproportionately lower hemoglobin A1c (HbA1c) due to increased erythrocyte turnover, decreased erythrocyte counts, and/or an increased mean corpuscular hemoglobin concentration (MCHC). In the Copenhagen General Population Study (N = 103,734) and the Danish General Suburban Population Study (GESUS, N = 20,003), we investigated the association between C282Y/C282Y (N = 399) and other HFE genotypes with erythrocyte count, MCHC, mean corpuscular volume (MCV), red cell distribution width (RDW), and high-sensitivity C-reactive protein (hsCRP). In GESUS, we additionally investigated the association with oxidative stress (by 8-oxo-7,8-dihydroguanosine and 8-oxo-7,8-dihydro-2′-deoxyguanosine), reticulocyte count, reticulocyte hemoglobin, reticulocyte percentage as a proxy for erythrocyte turnover, and HbA1c in linear regressions adjusted for age, sex, cohort, and blood donation. We investigated the mediation between HFE genotype and HbA1c. Compared to non-carriers, individuals with C282Y/C282Y had increased p-iron, transferrin saturation, ferritin, hsCRP, oxidative stress, reticulocyte counts, reticulocyte percentage (1.24% vs. 1.06%, p = 1.7 × 10⁻⁵) as a proxy for erythrocyte turnover, MCHC (344 vs. 340 g/L, p = 1.7 × 10⁻¹²), MCH, MCV, reticulocyte hemoglobin, p-glucose (5.6 vs. 5.4, p = 0.007), bilirubin, and LDH and decreased RDW, erythrocyte counts (4.49 × 10¹²/L vs. 4.61 × 10¹²/L, p = 6.1 × 10⁻¹¹), estimated erythrocyte survival, and HbA1c (36 vs. 38 mmol/mol, p = 0.01). The associations were similar, although attenuated, for other HFE genotypes. The association between the HFE genotype and decreased HbA1c was partially mediated by increased transferrin saturation, MCHC, MCV, and decreased erythrocyte count, but not by hsCRP, reticulocyte count, oxidative stress, or blood donation. In conclusion, while C282Y/C282Y and other HFE genotypes increased erythrocyte turnover, the disproportionately decreased HbA1c level was explained by fewer but larger erythrocytes filled with more hemoglobin and removed earlier from circulation, thus diluting the relative concentration of intracellular glucose per hemoglobin molecule. Full article

Background and Objectives: High-risk resected cutaneous melanoma carries a substantial risk of recurrence, and additional host-related prognostic biomarkers are needed beyond conventional tumor-centered factors. Red blood cell distribution width (RDW) reflects systemic inflammation and physiological stress and may provide incremental prognostic information. Materials and Methods: In this retrospective cohort study, 164 patients with stage II–III cutaneous melanoma who underwent curative-intent surgical resection were analyzed. A receiver operating characteristic (ROC) curve analysis determined the optimal RDW cut-off for relapse-free survival (RFS), which was 14.2%. Patients were categorized into low and high RDW groups accordingly. Survival probabilities were estimated using the Kaplan–Meier method and compared with the log-rank test. Univariate and multivariate Cox proportional hazards regression models were used to evaluate associations between RDW status, clinicopathological variables, and RFS. Results: During a median follow-up of 58.3 months, patients with high RDW had significantly shorter RFS compared with those with low RDW. In univariate analysis, elevated RDW was associated with an increased risk of recurrence (HR 2.79, 95% CI 1.39–5.58; p = 0.004). After adjustment for key prognostic factors (e.g., stage, Breslow, age, adjuvant therapy), high RDW remained an independent predictor of inferior RFS (HR 2.74, 95% CI 1.37–5.47; p = 0.004). Stage III disease also independently predicted worse RFS (HR 4.67, 95% CI 2.04–10.68; p < 0.001). Conclusions: Baseline RDW independently predicts RFS in high-risk resected stage II–III cutaneous melanoma and may enhance prognostic stratification using a simple, widely available biomarker. Full article

Background/Objective: The risk of bleeding is part of blood flow pathophysiology in diabetes mellitus (DM), and there may be potential for the relationship between blood cell indices and estimated whole blood viscosity (eWBV) in DM. However, red blood cell (RBC) indices, platelet ratios, and lymphocyte ratios have been part of routine haematology tests in clinical medicine including diabetes management. This study investigated two research questions. Firstly, how does eWBV correlate with RBC indices, platelet ratios, and lymphocyte ratios? Secondly, which parameters of RBC in routine full blood count (FBC) correlate more with glycated haemoglobin (HbA1c) changes? Methods: This was a laboratory-based clinical observational cohort study using secondary data from ongoing research. Data collected included FBC and biochemistry (HbA1c and serum protein level). Dependent variables were platelet and lymphocyte ratios as well as eWBV. Results: Averages for all parameters in the cross-sectional data were within normal range, except high HbA1c (7.67%) and marginally high monocyte-to-lymphocyte ratio. In the periodic cohort analysis, only RBC distribution width showed a significant difference (p < 0.04) between cohort groups, but least correlated with HbA1c changes. Further analysis for correlations among change scores showed that RBC had the strongest positive linearity for HbA1c (r = 0.30) and among the top three for eWBV (r = 0.54), while mean cell volume (MCV) has the strongest inverse for HbA1c (r = −0.47). Conclusions: The ongoing clinical use of RBC variables is superior to profiles of platelet and/or lymphocyte ratios in assessing the potential risk of bleeding (i.e., hypo-viscosity) in diabetes. Full article

Red blood cells (RBCs) are essential for transporting oxygen from lungs to peripheral tissues. However, the impact of transmissible gastroenteritis virus (TGEV) infection on RBCs and its potential pathophysiological significance during disease progression remain largely unexplored. In this study, hematological analysis of TGEV-infected piglets revealed significant reduction in both RBC distribution width–coefficient of variation and RBC distribution width–standard deviation, alongside elevated pCO₂ levels. Viral detection confirmed the presence of TGEV within RBCs from infected piglets. Further investigation demonstrated that TGEV could bind to, but not replicate in, RBCs. TGEV-bound RBCs exhibited crenated and impaired deformability, which were associated with reduced oxygen-carrying capacity. Additionally, TGEV infection promoted macrophage-mediated phagocytosis of RBCs and led to decreased serum iron levels, factors that might enhance TGEV infection. Collectively, these results demonstrated the involvement of RBCs in the progression of TGEV infection, providing new insights for the development of diagnostic and therapeutic strategies. Full article

Background: Spontaneous bacterial peritonitis (SBP) is a life-threatening complication of cirrhosis associated with high morbidity and mortality. Early risk stratification remains challenging due to the invasive nature of ascitic polymorphonuclear cell counting and the limited sensitivity of conventional markers. Novel composite biomarkers such as the blood urea nitrogen/albumin ratio (BAR), red cell distribution width/albumin ratio (RAR), and neutrophil-to-lymphocyte ratio (NLR) may offer practical prognostic value. This study aimed to evaluate the predictive power of these biomarkers for in-hospital mortality in patients diagnosed with SBP in the emergency department. Methods: This retrospective, observational, cohort study included adult patients diagnosed with SBP between March 2022 and October 2024. SBP diagnosis was confirmed by ascitic fluid leukocyte count > 250/mm³. Demographic data, laboratory parameters, and clinical outcomes were obtained from hospital records. RAR and BAR ratios were calculated at admission. Outcomes were analyzed according to ward/intensive care unit (ICU) admission and in-hospital mortality. Receiver operating characteristic (ROC) analysis and logistic regression were performed to assess prognostic performance. Results: A total of 112 patients were included (mean age 63.44 ± 13.16 years, 56.3% male). In-hospital mortality was 43.8%. Both BAR and RAR ratios were significantly higher in non-survivors (p = 0.016 and p = 0.001, respectively). BAR showed the highest prognostic performance (Area under the curve 0.761), with an optimal cutoff > 1.86 (sensitivity 64.44%, specificity 79.66%). RAR had an area under the curve (AUC) of 0.638, and NLR had an AUC of 0.658. Conclusions: Among the evaluated biomarkers, BAR emerged as the strongest predictor of in-hospital mortality in SBP, outperforming both RAR and NLR. Although albumin alone was not predictive, its use in composite ratios improved prognostic accuracy. These easily accessible biomarkers may support early risk stratification in emergency settings. Full article

Background: Magnesium is essential for mitochondrial function and muscle regeneration, potentially protecting against low muscle mass (LMM). We examined the association of dietary magnesium intake with LMM risk and skeletal muscle index (SMI), and whether inflammatory indicators mediate this relationship. Methods: A total of 5793 participants aged 20–59 years were included in this study from the National Health and Nutrition Examination Survey (NHANES) conducted from 2011 to 2018. To investigate the association of dietary magnesium intake with LMM and SMI, we applied weighted logistic regression model, linear regression model, restricted cubic spline analysis, subgroup analysis and sensitivity analysis. Inflammatory indicators were assessed using mediation analysis, including the C-reactive protein–albumin–lymphocyte (CALLY) index, neutrophil–platelet score (NP), platelet-to-albumin ratio (PAR) and red blood cell distribution width-to-albumin ratio (RAR) mediation. Results: In the fully adjusted model, participants in the highest magnesium quartile had a reduced risk of LMM, with OR of 0.33 (95% CI: 0.18, 0.60), and increased levels of SMI, with β values of 0.05 (95% CI: 0.04, 0.07). Mediation analysis showed that NP, PAR, and RAR mediated 18%, 13%, and 21% of the association between magnesium and LMM, respectively, and also acted as mediators of the relationship between magnesium and SMI, with mediation ratios of 32%, 24%, and 25%, respectively. Conclusion: Higher dietary magnesium intake was associated with lower LMM risk and higher SMI, partly mediated through inflammatory indicators involving NP, PAR, and RAR. This finding may provide a new perspective on the prevention and management of LMM. Full article

Background: Systemic inflammatory indices such as the neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) are associated with severe COVID-19, but their role in mild disease among frail older adults remains unclear. Early Israeli admission policies enabled hematologic profiling of asymptomatic and mild cases. Methods: Retrospective cohort of adults ≥65 years admitted to a geriatric center (March 2020–March 2021). Patients with Mild/asymptomatic COVID-19 cases were compared with patients hospitalized for other infections (pneumonia, urinary tract infection, cellulitis). Admission indices such as NLR, derived neutrophil-to-lymphocyte ratio (dNLR), PLR, hemoglobin-to-lymphocyte ratio (HLR), red cell distribution width (RDW), and C-reactive protein (CRP) were analyzed using receiver operating characteristic (ROC) curves. Sensitivity analyses compared COVID-19 with bacterial pneumonia and assessed one-week changes. Results: Among 450 patients (177 COVID-19 and 273 non-COVID; median age 85–86), COVID-19 cases showed lower white blood cell counts (WBC), neutrophils, and CRP but more marked lymphopenia. The most discriminative indices were dNLR, PLR, HLR, and RDW, which differed most (all p < 0.001), while NLR and systemic immune-inflammation index (SII) showed limited discrimination. The best AUC was 0.69. dNLR, PLR, and HLR remained elevated after one week. Conclusions: In frail older adults with early or mild COVID-19, modest but consistent hematologic patterns, including lymphopenia with elevated dNLR, PLR, and HLR, and lower RDW, were distinguished COVID-19 from other infections, although single-marker accuracy was limited. These routine indices may assist early differentiation when virologic testing is delayed or unavailable. Full article

This research aimed to establish reference intervals and evaluate the influence of age in 56 Nguni cattle raised in Mozambique. Blood samples containing EDTA as anticoagulant were collected. The erythrogram and total leukocyte count were analyzed using the BC-2800 Vet Mindray^® automatic counter. The differential counting of leukocytes was performed in blood smears stained using Giemsa and Mcgruwald’s stain. Statistical analysis was performed using the statistical analysis system (SAS). Analysis of variance was performed using the GLM procedure, and mean contrasts were analyzed using Duncan’s parametric test at 5% significance, with the Shapiro–Wilk and Levene tests for date normalities. The reference intervals for the erythrogram are as follows: red blood cells: 6.78 to 7.40 × 10¹²/L; hemoglobin: 10.77 to 11.36 g/dL; hematocrit: 28.02 to 29.56%; mean corpuscular volume (MCV): 39.91 to 43.02 fL; mean corpuscular hemoglobin (MCH): 15.27 to 16.44 pg; mean corpuscular hemoglobin concentration (MCHC): between 37.86 and 39.10 g/dL; and red blood cell distribution width (RDW): between 16.98 and 19.40%. For leukograms, the following references values were obtained: total leukocytes: between 14,106 and 16,233 × 10⁶/L; basophils: between 32 and 165 × 10⁶/L; eosinophils: between 823 and 1262 × 10⁶/L; band neutrophils: between 25 and 87 × 10⁶/L; segmented neutrophils: between 2510 and 3249 × 10⁶/L; total neutrophils: between 2565 and 3306 × 10⁶/L; lymphocytes: between 9471 and 11,474 × 10⁶/L; and monocytes: between 154 and 296 × 10⁶/L. Age influenced MCV, MCH, leukocytes, eosinophils, and lymphocytes. Leukogram reference intervals of other countries could not be used for the breed of Mozambique without making gross errors. Full article