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【Objective】 To investigate whether the blood donors' coagulation status may lead to apheresis platelet aggregation in vitro. 【Methods】 Thirty blood donors with aggregation in apheresis platelets collected by AMICUS blood cell separator no less than 3 times previously and occurred when the last time of apheresis donation were observed in aggregated group (referred to as the experimental group); Thirty donors without aggregation in apheresis platelets collected by AMICUS blood cell separator no less than 3 times were observed in the control group simultaneously. The basic platelet parameters in the two groups, including Plt, MPV, PDW, Pet, P-LCR were detected by automatic blood cell analyzer (BC-3000Plus), and thromboelastogram indexes including reaction time(R), kinetics time(K), kinetics of clot development(α), maximum amplitude (MA) and coagulation index(CI) were tested by Thrombosis elastography (TEG) before collection. With SPSS24.0 software, t test was used to compare the differences between the two groups. 【Results】 The CI value in experimental group was significantly different from that of the control group (0.48± 1.00 vs -0.99 ±1.96, P0.05 ) . 【Conclusion】 The coagulation status of blood donors may be an independent risk factor for the in vitro aggregation of apheresis platelets.
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【Objective】 To retrospectively analyze the safety and product quality of NGL XCF 3000 blood cell separator for collecting platelet-rich plasma (PRP) in 256 cases, so as to provide reference for safe collection and product quality control of PRP. 【Methods】 The data of 256 patients receiving PRP treatment in our hospital from June 2021 to June 2022 were statistically analyzed, and the differences in the collection time, circulating blood volume and the occurrence of adverse reactions to blood donation were analyzed when NGL XCF 3000 was used to collect autologous PRP among patients of different genders, ages and platelet counts. The differences in platelet content, red blood cell(RBC) contamination and white blood cell(WBC) residues in PRP products were analized. 【Results】 1) There were no significant differences in collection time, circulating blood volume and collection volume among patients of different genders, ages and platelet counts (P<0.05). 2) The contents of WBC, RBC and platelet were not significantly different between male and female patients after collection (P<0.05); 3) The WBC contents increased with the increase of age, and the WBC residue in the elder group[ 56 to78 years old, (0.64±0.41) ×109/L] was significantly higher than that in the younger group[group 1,18 to 40 years old, (0.50±0.35)×109/L], with significant difference was Statistically significant (P<0.05). 4) The residues of WBCs and RBCs in in low platelet group [group 1, (100-150)×109/L] were higher than those in other platelet count groups, and the difference was Statistically significant (P<0.05), and the platelet count in this product was significantly lower than that in other platelet count groups (P<0.05). Conclusion The NGL XCF 3000 blood cell separator is safe and stable for PRP collection in patients with different genders, ages and platelet counts of (100-450)×109/L, and the PRP products collected can meet clinical therapeutic needs.
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【Objective】 To reduce the occurrence of adverse reactions to blood donation during platelet collection in female blood donors with low body weight and high platelet count, so as to improve the comfortableness during platelet collection and increase the proportion of repeated blood donors. 【Methods】 The control group and observation group were compared to explore the causes that may cause adverse reactions in the blood collection cycle using blood collection process program software in MCS+, and the incidence of blood donation reaction was compared and observed by increasing the times of oral administrations of calcium gluconate by 10%, increasing the number of collection cycles and reducing the peak plasma volume of the last cycle. 【Results】 After comparing the two groups, it was found that the incidence of adverse reactions in the observation group and the control group was 16.7%(3/18) and 81.2%(26/32), the proportion of repeated donors in the observation group and the control group was 77.7%(14/18) and 31.2%(10/32). 【Conclusion】 Female platelet donors with low body weight and high platelet count should be given more care during the collection process. It is suggested that giving more times of oral administrations of calcium gluconate by 10% and one more collection cycle to reduce the collection peak in each cycle, as well as the supplement of saline, which can effectively reduce the occurrence of adverse reactions to blood donation, thus improving blood donation satisfaction and increasing the proportion of repeated blood donors.
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【Objective】 To analyze the characteristics of peripheral blood mononuclear cells (PBMC) collection in healthy children, and explore the factors affecting collection efficiency (CE). 【Methods】 The PBMC data, involving 70 episodes of apheresis from 42 children during January 2017 and June 2020 were retrospectively analyzed All children were collected in Zhujiang Hospital of Southern Medical University. 【Results】 Multiple linear regression analysis showed that mononuclear cells (MNC) in donor collections from healthy children were positively correlated with anticoagulant dosage, lymphocyte count and monocyte count (P<0.05), meanwhile, negatively correlated with age and platelet count. The PBMC CE was negatively correlated with age, platelet count, and processed whole blood volume (P<0.05). CD34+ cells (×107 /kg)was negatively correlated with age, meanwhile, positively correlated with numbers of collection and processed whole blood volume(r=-0.79). No statistical differences in red blood cell count, platelet count, lymphocyte count, monocyte count of healthy child donors were notable before versus after apheresis. 【Conclusion】 MNC can be collected effectively in children of different ages. The PBMC collection efficiency was related to age. Meanwhile, the higher the lymphocytes and monocytes were before apheresis, the more MNC were collected. The efficiency of MNC collection would decrease when the apheresis volume of the children exceeded their total blood volume twice. However, the absolute value of CD34+ cells in the final yields would increase.
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【Objective】 To explore the factors affecting the collection and product quality of platelet-rich plasma (PRP), and to provide reference for ensuring the safety of PRP collection and the quality of PRP products. 【Methods】 A total of 108 patients receiving PRP treatment in our hospital from February 20 to April 20, 2016 were investigated by analyzing the time of PRP collection, the amount of circulating blood, the amount of anticoagulant and the use of calcium from four factors including gender, age, Plt before collection and collection equipment. The effects of PRP product volume, platelet content, RBC and WBC contamination, and the occurrence of adverse reactions were statistically analyzed. 【Results】 The type of equipment had little influence on the collection parameters and product quality(P>0.05). RBC residues in female patients were (0.07±0.03) ×1012/L, higher than that in male patients (0.04±0.02)×1012/L (P<0.05). Significant differences in collection time, circulating blood volume, anticoagulant dosage and collection volume were noticed by age(18~40 vs 56~77 years old, P<0.05) and platelet count(×109/L) (201~450 vs 100~150, P<0.05). In patients with low Plt count (100~150)×109/L before collection, the Plt content in PRP product was relatively low(771±218)×109/L, and WBC(0.45±0.25)×109/L and RBC(0.07±0.03)×1012/L residual amount was rather high(P<0.05), but also satisfied the quality criteria. 【Conclusion】 The MCS+ and NGL XCF 3000 blood cell separators are safe and stable in PRP collection, even in patients with low platelet count(100~150)×109/L or old age (>55 years old).
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Objective:To investigate the effect of different collection procedures of COBE Spectra blood cell separator on collection of autologous peripheral blood hematopoietic stem cells in children.Methods:The clinical data of 10 children who were collected autologous peripheral blood hematopoietic stem cells with the monocytes (MNC) or fully automatic peripheral blood stem cells (AutoPBSC) programs of COBE Spectra blood cell separator in the Children's Hospital of Soochow University from July 2018 to January 2020 were retrospectively analyzed, and the children were 3-10 years old with the body weight of 15-31kg. There were 5 cases in MNC group and 5 cases in AutoPBSC group.Results:Autologous peripheral blood hematopoietic stem cells were collected for 25 times, with an average of 2.5 times (1-4 times), 10 times in MNC group and 15 times in AutoPBSC group. The number of stem cells [the median (the range)] before collection was 19.3/μl (3.5-129.0/μl) in MNC group and 9.4/μl (2.2-38.7/μl) in AutoPBSC group. The number of CD34 + cells of single collection was 1.22×10 6/kg (0.18×10 6/kg-6.30×10 6/kg) in MCN group and 0.85×10 6/kg (0.13×10 6/kg-2.64×10 6/kg) in AutoPBSC group. Correlation analysis showed that there was a positive correlation between the number of collected CD34 + cells and the number of stem cells before collection (AutoPBSC group: r=0.921, P < 0.01; MNC group: r=0.833, P=0.003). The collection efficiency was 5.4% (3.4%-11.2%) in MNC group and 10.4% (4.7%-13.9%) in AutoPBSC group, and the difference was statistically significant ( Z=2.163, P = 0.031). Conclusion:The collection effect of children's autologous peripheral blood hematopoietic stem cells with COBE Spectra blood cell separator AutoPBSC program is better than that with MNC program.
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Objective After the collection of blood donation by plateletpheresis, the residual blood in the pipeline consumables cannot be completely returned to blood donors, resulting in waste. The purpose of this article was to explore a safe and simple operation method in order to reduce the blood loss of donors as much as possible.Methods We randomly selected 10 plasmapheresis donors and adopted single-needle procedure of FENWAL blood cell separator to collect platelets in accordance with the blood cell separator operation manual. The air trap was inverted when the machine was performing suction, the last step of return procedure. The salt water pipeline and the blood return pipeline were disconnected their respective pipeline clip after the return procedure ended and the blood were returned by gravity. Cell counts were performed on the remaining blood in blood return pipeline, air trap and pipeline consumables respectively.Results In pipeline consumables, there was (84.68±4.38)mL residual dilute blood finally, containing equivalent red blood cells in (42.06±4.08)mL whole blood and white blood cells in (214.3±68.09)mL whole blood. In air trap, there was (11.98±3.27)mL blood, containing equivalent red blood cells in (8.32±2.52)mL whole blood and white blood cells in (58.97±24.57)mL whole blood. In blood return pipeline, there was 20 mL blood, containing equivalent red blood cells in (11.18±1.18)mL and white blood cells in (80.74±30.89)mL whole blood.The blood remaining in air trap and blood return pipeline was returned to donors by improved operation method.Conclusion The residual blood in air trap and return pipeline can be returned to donors, which provides technical support for the healthy development of voluntary blood donation.
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Objective To contrastively analyze the performance of two kinds of blood cell separators for apheresis platelets . Methods 80 blood donors were selected from 4 234 healthy apheresis platelet donors and their data before and after apheresis platelets were respectively collected by using two kinds of different blood cell separators Trima and Amicus .The product quality during the collection process ,residual WBC and RBC count ,acquisition time ,collection efficiency ,scrapping situation and safety were performed the comparative analysis between the two kinds of blood cell separator .Results In the case of the difference of the basic parameters before apheresis platelet having no statistical significance ,the two kinds of blood cell separator had no differences in the aspects of product quality ,processing blood amount and the use amount of anticoagulants(P>0 .05);but there were statisti‐cal differences in the aspects of acquisition time ,collection efficiency and pipeline residual blood amount (P<0 .05) .Conclusion Two kinds of blood cell separators have their own advantages and disadvantages during the use process ,so the blood cell separator should be selected according to the physical quality and their own characteristics of blood donors .
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Background: In Transfusion Medicine, screening for suitable donor for platelet aphaeresis is difficult and time consuming procedure. This might lead to delayed supply of life saving Single Donor Platelet to critically bleeding patient. Aims & Objective: The aim of this study was to analyse the effect of various donor and procedure related parameters on the yield of single donor platelet so that the transfusionist as well as clinician can screen blood donors effectively in less time. Pre-donation platelet count, haemoglobin, haematocrit & weight were included as donor related variables. Processing time and blood volume processed were assessed as procedure related variables. Material and Methods: A total number of 265 platelet aphaeresis procedures were performed on CS 3000 plus with AMS cell separator (Fenwal, USA) using closed & open system aphaeresis kits & studied with respect to donor’s, procedure’s & patient’s related data. The statistical analysis used in this study was Pearson Correlation (‘r’ value). Results: The mean pre-donation platelet count was 286 ± 55 x 103/cu mm & mean platelet yield of all procedures was 3.3 ± 0.68 x 1011. Conclusion: Platelet yield correlated positively with pre-donation platelet count (r = 0.302, P < 0.0001). Donor’s weight, haemoglobin & haematocrit were not correlated with the yield & did not affect the yield of single donor platelets.
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0.05).The volumes of PBSC collected each time in the 3 groups were about 60 ml,and there were(3.67—10.25)?1010 erythrocytes per pack in the ABO major incompatible group,and 22—38 ml of plasma in ABO minor incompatible component.All the PBSC were infused to recipients without the removal of erythrocytes or plasma,and no haemolytic reaction was observed in any recipients and all their hematopoietic functions were re-established.Conclusion Enough PBSC can be harvested by using CS-3000 Plus blood cell separator from ABO incompatible allogeneic donors.By modification of separator parameters,the number of erythrocytes in the collects can be reduced.The collected PBSC can be safely infused into the blood group incompatible recipients without removal of erythrocytes or plasma.
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0.05).Conclusion Performing leukapheresis and plateletpheresis sequencially with a single Apheresis Kit is a safe,effective,practicable and economic method in the treatment of chronic myeloid leukemia with leukocytosis and thrombocytosis.It can drop the medical expanse markedly.
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BACKGROUND: Allogeneic bone marrow transplantation across ABO incompatibility barriers may result in immune mediated hemolysis. Hemolysis may be avoided by RBC depletion from the graft. In vitro graft manipulations carry the risk of hematopoietic stem cell loss, a factor that may be most important in graft failure. We report 16 major ABO blood group incompatible allogeneic bone marrow transplants using erythrocyte depletion of marrow prior to infusion. METHODS: From March 1997 to July 2001 in Yonsei University College of Medicine, 16 patients underwent ABO blood group incompatible allogeneic BMT: 5 for acute myelocytic leukemia, 5 for severe aplastic anemia, 3 for acute lymphocytic leukemia, 2 for chronic myelocytic leukemia, and 1 for myelodysplastic syndrome. RBC depletions were done with automatic cell separator, COBE Spectra (COBEBCT Inc., Lakewood, USA). RBC removal rates and mononuclear cell recovery rates were calculated. And the evidence of successful engraftment and intravascular hemolysis were also evaluated. RESULTS: The RBC removal rate was 99.1+/-0.0% and a mean of 1% of the original red cell volume was contained in the final infusate. The mononuclear cell recovery rate was 70.0+/-16.3% from the original MNCs. Fourteen patients tolerated the infusion of the marrow concentrates without any adverse effects. Two patients experienced hemoglobinuria, but disappeared within 2 days by continued observation. After transplantation, absolute neutrophil counts exceeded 500/nL by 10.8+/-1.9 days, platelet counts exceeded 50,000/nL by 30.5+/-8.5 days, and reticulocytosis sustained at >1% was by 25.8+/-13.9 days. CONCLUSION: RBC depletion from ABO major mismatched bone marrow aspirates by the automatic cell separator is a safe and effective technique.
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Humans , Anemia, Aplastic , Blood Component Removal , Bone Marrow Transplantation , Bone Marrow , Cell Size , Erythrocytes , Hematopoietic Stem Cells , Hemoglobinuria , Hemolysis , Leukemia, Myelogenous, Chronic, BCR-ABL Positive , Leukemia, Myeloid, Acute , Myelodysplastic Syndromes , Neutrophils , Platelet Count , Precursor Cell Lymphoblastic Leukemia-Lymphoma , Reticulocytosis , TransplantsABSTRACT
BACKGROUDNS: Concentration of bone marrow aspirates is an important prerequisite prior to infusion of ABO incompatible allogeneic marrow and prior to cryopreservation and storage of autologous marrow. We describe our experience in processing 39 bone marrow aspirates harvested for autologous and ABO incompatible allogeneic bone marrow transplantation (BMT) using the blood cell separator, and analyzed removal rates of the red blood cells and recovery rates of the mononuclear cells. METHODS: Between September 1992 and July 1998, 39 bone marrow aspirates were processed using CS3000 Plus (38/39) and COBE Spectra (1/39) cell separators. Among 39 bone marrow harvests, 25 cases were for autologous BMT and 14 cases were for allogeneic BMT with ABO incompatibility. Initial bone marrow and final bone marrow concentration product were analyzed for volume, hematocrit, WBC and mononuclear cell count by manual differential count. RESULTS: Within 60-120 min (mean 81 min), the initial marrow volume 1212 mL (+/-205 mL) was processed. A mean of 31.9% (+/-13.4%) of the initial nucleated cells and 70.1% (+/-27.0%) of initial mononuclear cells was recovered in a mean volume of 214 mL (+/-17 mL). This procedure effectively removed 97% of the red cells and 81% of the granulocytes. CONCLUSIONS: We concluded that automated bone marrow processing with the blood cell separator was an effective method for collecting mononuclear cells while removing red blood cells, granulocytes, and plasma.
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Blood Cells , Bone Marrow Transplantation , Bone Marrow , Cell Count , Cryopreservation , Erythrocytes , Granulocytes , Hematocrit , PlasmaABSTRACT
BACKGROUND: Three cell separators are being used and they collect platelets with different centrifuge speed and duration. Because centrifugation may cause platelet activation, the differences of centrifuge speed and duration are important in controlling the quality of apheresis platelet products. We compared many parameters of activation of platelets collected by Spectra (Cobe BCT, Lakewood, CO, USA), CS3000plus (Baxter Healthcare, Fenwal Division, Round Lake, IL, USA) and Mobile Collection SystemTM (MCS, Haemonetics co., Braintree, MA, USA). METHODS: Platelets were collected from ninety-five normal donors with Spectra (n=39), CS3000plus (n=19) and MCS (n=37). We underwent the procedure according to the automatic program set. We measured platelet yield and assayed pH, hypotonic shock respose (HSR), CD62 (p-selectin, GMP140) expression and beta-thromboglobulin in each stored unit on day 0 and day 3 for evaluation of the storage lesions. RESULTS: Platelet yield per product was 3.7 +/- 1.2 x 1011, mean final product volume was 316 +/- 69 mL and mean procession time was 100 +/- 19 minutes. Mean collection efficiency was 42.5 +/- 8.3%. The cell separator volume of product collected by CS3000plus was the smallest while platelet concentration and total yield were the highest in the product collected by Spectra. The pH of the products were 7.1 +/- 0.1 on day 0 and 6.7 +/- 0.4 on day 3. Hypotonic shock response was 69 +/- 13 % on day 0 and 28 +/- 17 % on day 3. P-selectin expression was 19 +/- 9 % (4.2 +/- 1.9 relative fluorescence intensity, RFI) on day 0 and 60 +/- 22 % (17.9 +/- 14.2) on day 3. beta-thromboglobulin was 28.5 +/- 7.0 IU/107 platelets on day 0 and 31.3 +/- 7.2 IU/107 platelts on day 3. The comparison of the three cell separators showed that on day 0 platelet product of MCS has lower pH and higher beta-thromboglobulin release than others (p<0.05). And on day 3 platelet product of MDS has better hypotonic shock response than others (p<0.05). Other parameters revealed no differences among three cell separators. The expression of p-selectin was shown to correlate highly with pH reduction (r=0.72), but not with the release of beta-TG (r=0.24). CONCLUSIONS: Most parameters showed no differences among three cell separators, but apheresis platelet concentrates processed by MCS showed lower pH on day 0 and higher beta-thromboglobulin concentration on day 0 and day 3 than apheresis platelet concentrates processed by Spectra or CS3000plus and hypotonic shock response on day 3 was the lowest in CS3000plus. So platelet activation produced during apheresis processing was lowest in apheresis platelet concentrates with Spectra.
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Humans , beta-Thromboglobulin , Blood Component Removal , Blood Platelets , Centrifugation , Delivery of Health Care , Fluorescence , Hydrogen-Ion Concentration , Lakes , Osmotic Pressure , P-Selectin , Platelet Activation , Tissue DonorsABSTRACT
Objective To compare the efficiencies of Fenwal CS-3000 plus and Cobe Spectra blood cell separators in collecting peripheral blood stem cells. Methods Thirty-eight stem cell apheresis procedures were performed on 31 patients using Fenwal CS-3000 plus cell separator and 65 procedures performed on 45 patients using Cobe Spectra cell separator. The white blood cell counts and the percentages of mononuclear cells and CD 34 positive cells in the apheresis products of the two groups were compared. Results The WBC counts of the two groups had no significant difference. The mononuclear cell percentage was significantly higher with Fenwal CS-3000 plus than with Cobe Spectra. The mononuclear cell percentage declined with increasing WBC count when using Cobe Spectra. There was no significant difference between CD 34 positive cell percentages of the two groups. There were no significant correlations between the WBC count and the percent of CD 34 cells, between the percent of mononuclear and the percent of CD 34 cells of the apheresis products. Conclusion There is no difference between the collection efficiencies of the two blood cell separators in the collection of peripheral blood stem cells.