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Objective:To investigate the effectiveness of detecting MC B/P in PB by FCM for EBV+PTLD screening.Methods:481 patients with fever and large lymph nodes after allogenic hematopoietic stem cell transplantation (ALLO-SCT) in Ludaopi Hospital from 2018 to 2019 were retrospectively analyzed. The results of post-transplantation days, viral load (EBV, CMV) and MCB/P were detected. To evaluate the value of MC B/P in the diagnosis of PTLD by the sensitivity, specificity, positive predictive value and negative predictive. Logistic regression was used to analyze the clinical influencing factors of EBV-associated PTLD. The median fellow-up time was 449 days (range: 184 days to 700 days).Results:The diagnosis of PTLD was established in 51 patients. 55 patients who detecting MC B/P by FCM were positive. There were significant differences between the PTLD negative and positive groups in lymph node enlargement, age, EBV, CMV, monoclonal B cells, and monoclonal plasma cells ( P<0.05). Monoclonal plasma, monoclonal B and days after transplantation are important relationship with the diagnosis of PTLD, which have good diagnostic value for EBV-associated PTLD. Conclusion:FCM screening peripheral blood MC B/P has good diagnostic performance for EBV-associated PTLD. Monoclonal B, monoclonal plasma and the number of days of PTLD after transplantation were correlated with EBV-associated PTLD.
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Objective:This study aims to analyze the counts (per kilogram of body weight) or percentages of transplanted lymphocyte subgroups in children with non-infectious pulmonary complications (NIPC) and air-leak syndrome (ALS) after allogeneic hematopoietic stem cell transplantation (allo-HSCT) and explore its significance in the progression of lung complications after transplantation.Methods:The patients with NIPC and ALS after allo-HSCT from January 2013 to December 2019 in Hebei Yanda Ludaopei Hospital were retrospectively studied and the influencing factors in the progress of NIPC after HSCT were statistically analyzed.Results:Of the 2026 children who received HSCT treatment, 59 patients (34 males and 25 females) developed NIPC, the probability was 2.9% (59/2 026), and the probability of combined ALS was 1.4% (28/206). The differences in the comparison between NIPC progressed to ALS group (ALS group) and failed to progress to ALS group (non-ALS group) in the patient′s age( P=0.028), disease condition before transplantation( P=0.022), NIPC onset time( P=0.004) were significant. The P values of the percentage of NKT-like cells in the bone marrow ( P=0.008) or peripheral stem cells ( P=0.003) accounted for the lymphocytes. CD4+CD25+dim cells in bone marrow ( P=0.029) or peripheral stem cells ( P=0.036) accounted for the CD4+lymphocytes and the ratio of CD4/CD8 in bone marrow( P=0.004) or peripheral stem cells ( P=0.020) were less than 0.05, which meant the differences in patients′ refusion cells were significant. In the binary logistic regression model, the percentage of bone marrow NKT-like cells to lymphocytes, the ratio of bone marrow CD4+/CD8+and the percentage of peripheral stem NK cells to lymphocytes were important risk factors for the progression of NIPC to ALS. The rest factors were excluded from the model (AUC=0.918, P<0.05). Conclusion:During allo-HSCT transplantation, a high proportion of NKT-like cell and NK cell levels, and a high CD4+/CD8+ratio in the infusion of donors with high immune tolerance have an important correlation with the progression of the NIPC.
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Objective To investigate the association of monocyte chemoattractant protein-1 (MCP-1) promoter -2518A/G gene polymorphism with coronary lesions and in stent restenosis in Tianjin Chinese population. Methods Two hundred and seventy six patients who underwent percutaneous coronary intervention (PCI) and coronary angiography during follow-up were enrolled in the study. The MCP-1 gene promoter polymorphism at position -2518 was determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Results The frequencies of three genotypes of MCP-1-2518A/G polymorphism were 21.0% AA, 34. 1% GG,44.9% AG, respectively. There were no statistical differences in the number and the mean degree of stenosis vessels before PCI among 3 genotype groups (all P＞0.05). 113 cases developed in-stent restenosis and 163 cases were free from restenosis. In restenosis group, the AA, AG and GG genotype frequencies were 23.9%, 40.7%, 35.4%, against 19.0%, 47.9% and 33.1% in nonrestenosis group (P = 0. 446) . The frequencies of -2518A and G allele were 44.2%, 55.8% in restenosis group versus 42.9%, 57. 1% in non-restenosis group(P=0. 761). Conclusions The polymorphism of MCP-1-2518 A/G gene may be associated with neither atherosclerosis nor the in-stent restenosis.