• 中国科学论文统计源期刊
  • 中国科技核心期刊
  • 美国化学文摘(CA)来源期刊
  • 日本科学技术振兴机构数据库(JST)

Responsible Institution:

Anhui Commission of Health

Sponsor:

The First Affiliated Hospital of University of Science and Technology of China (Anhui Provincial Hospital) Anhui Provincial Association of Transfusion

Editor-in-Chief:XU Ge-liang

Publication Frequency:Bimonthly

CSSN:

ISSN 1671-2587

CN 34-1239/R

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Identification of HLA Restriction for Neoantigens and Evaluation of Anti-tumor Ability of Neoantigen Induced Reactive T cells
YANG Ying, LI Zihan, DING Xuping, ZHANG Jiamin, LI Qin, GUO Zhonghui, ZHAO Fengyong, YANG Qixiu, WANG Chen, LU Liming, ZHU Ziyan
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (4): 433-439.   DOI: 10.3969/j.issn.1671-2587.2024.04.001
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Objectives To explore the possibility to utilize unrelated donors' cells as sources for adoptive T cell anti-tumor therapy, thus we need to identify HLA restriction for neoantigens and evaluate neoantigen induced reactive T cells' cytolysis ability. Methods 16 neoantigen peptides were used to induce 18 unrelated donors' (group 1) PBMC (peripheral blood mononuclear cells) into reactive T cells, and HLA typing was performed, the affinity between peptides' and HLA molecule was predicted by NetMHC database, then neoantigen with HLA-A2 restriction was selected to induce another group (group 2) of 17 unrelated donors' PBMC into reactive T cells, these cells would act as effectors, tumor cell line T2 cells or the tumor cells with the same source of this neoantigen would act as targets either, LDH release tests and RTCA (real time celluar analysis) were performed to evaluate the effectors' anti-tumor ability. Then these results were compared between HLA-A2+ and HLA-A2- samples. Results NetMHC database predicted neoantigen LM7 showed high affinity with HLA-A2+ antigens, 5/11 of HLA-A2+ samples can successfully be induced into reactive T cells, including 3/3 homozygous HLA-A2+ samples, while 2/7 of HLA-A2- samples with more reactive T cells. Induced T cells from A2+ samples showed higher percentages of tumor cells killed than those A2- samples(60.72±11.28 vs 47.2± 4.46, P=0.03). Conclusions Our study suggests prediction by NetMHC is more helpful in homozygous samples, neoantigens LM7 is confirmed as HLA-A2 restrictive, which can induce some HLA-A2+ PBMC into reactive T cells which can kill tumor cells more efficiently, unrelated donors should be screened not only by HLA-typing but also cell function tested, thus induced reactive T cells can take the roles as the source for adoptive anti-tumor T cells therapy.
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Number of NK and T Cells Recovered from Leukocyte Reduction Filters and Its Correlation Factors
LI Ran, SUN Liyan, CHEN Tingting, ZENG Jinfeng
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (4): 451-456.   DOI: 10.3969/j.issn.1671-2587.2024.04.004
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Objectives To assess the recover cells from Leukocyte reduction filters (LRFs) and their related factors, this study analyzed the number of natural killer (NK) cells and T cells from LRFs and whole blood (WB). The correlation between the number of these cells and age, sex and other factors was further analyzed. Methods WB and LRFs (400 mL) were collected from 51 repeat blood donors in Shenzhen Blood Center from July 2023 to June 2024. White blood cells (WBCs) were obtained by washing LRFs with PBS buffer. The cells from WB and LRFs were counted by blood cell analyzer. Mononuclear cells were isolated by density gradient centrifugation. The proportions of CD3 -CD56 +NK, CD3 +CD4 +T and CD3 +CD8 +T cells were detected by flow cytometry. Statistical analysis was performed using GraphPad Prism v.9.0 software. Results In a certain flush volume, the number of total lymphocytes from LRFs increased with the increase of flush volume, but the cell density decreased with the increase of flush solution. There was no significant difference in the total number of lymphocytes from LRFs among donors of different ages and genders ( P>0.05). According to the results of cell number and cell ratio, the number of CD3 -CD56 +NK cells from LRFs was different in age groups ( P<0.05), but no significant difference was found in gender groups ( P>0.05). The number of CD3 -CD56 +NK cells from WB in male donor were significantly higher than that in female donor ( P>0.05). Whether from LRFs or WB, there was no significant difference in the number of CD3 +CD4 +T cells and CD3+CD8+T cells in different age groups and gender groups ( P>0.05). Conclusion In a certain flush volume, the total number of lymphocytes from LRFs was correlated with the volume of the flush solution. The number of CD3 +CD4 +T cells and CD3 +CD8 +T cells were not significantly correlated with the age and gender of blood donor, while the number of CD3 -CD56 +NK cells was correlated with the age of blood donor.
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Study of Viral Reduction by Methylene Blue with LED White Light in Plasma
MO Qin, HUANG Yuwen, LIU Hong, WU Xiaofei, JIA Yao, MA Rongna, WANG Xun
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (4): 463-469.   DOI: 10.3969/j.issn.1671-2587.2024.04.006
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Objectives To evaluate the effect of virus reduction in plasma using LED white light. Methods Methylene blue was added to plasma at a final concentration of 1 µM. The activity of coagulation factors in plasma and the inactivation effect on Sindbis virus were compared by different treatment methods (10 cm/5 cm spacing, unilateral/bilateral irradiation), different light intensities (30 000 lx, 35 000 lx, 40 000 lx, 45 000 lx, and 50 000 lx) and different time points (10, 20, and 30 min) using LED white light as the light source. Results Increase time of irradiation led to increase of plasma temperature under 50 000 lx light intensity. The extent of increase was found to be greater at 5 cm than at 10 cm spacing, and greater with bilateral than unilateral irradiation. The 5 cm/10 cm spacing and unilateral/bilateral irradiation had no significant differences in their effect on coagulation factor Ⅷ and fibrinogen (FIB) activity. The 10 cm bilateral spacing was selected as the device parameter for photochemical treatment. Plasma was irradiated at intensities of 30 000, 35 000, 40 000, 45 000, and 50 000 lx, respectively. The results showed Sindbis virus in plasma was inactivated after 5 minutes of irradiation at different light intensities, with titer reduction >4 LogTCID 50/0.1 mL. Factor Ⅷ and FIB activities were retained at the level of 70% and 60%, respectively after 20 minutes of irradiation. Correlation analysis revealed that there was no correlation between different light intensities and loss of factor Ⅷ activity. However, the effect of light intensities on FIB activity was more pronounced within 20 minutes of irradiation. A significant decline in the FIB activity was observed with increasing light intensities, although no significant difference was found after 30 minutes of irradiation. The irradiation time was found to be significantly correlated with the loss activity of coagulation factors, regardless of the light intensities. Conclusion LED white light can act as a new light source for methylene blue virus reduction. Under the right conditions it reduced viruses effectively and preserves the activity of the coagulation factors in plasma.
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Clinical Efficacy and Safety of ABO Incompatible Platelet Transfusion
ZHUANG Jinmu, ZHOU Shiqiao
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (4): 516-520.   DOI: 10.3969/j.issn.1671-2587.2024.04.015
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Objectives To study the clinical efficacy and safety of ABO incompatible platelet transfusion in emergency situations. Methods 271 cases of ABO incompatible platelet transfusion in our hospital from January 2020 to January 2024 were collected, and 128 cases were enrolled which were divided into bidirectional mismatch group (10 cases), major mismatch group (56 cases), and minor mismatch group (62 cases). All 128 patients had ABO homologous platelet transfusion history before and within 10 days after ABO incompatible platelet transfusion. The incompatible transfusion was set as the ABO blood group incompatible experimental group (subgroup B), the previous ABO homozygous platelet transfusion was set as the ABO homozygous control group (subgroup A), and the subsequent ABO homozygous platelet transfusion was set as the ABO homozygous experimental group (subgroup C). Platelet count change after platelet transfusion (△PLT) and 24 h platelet corrected count Increment (CCI) were used to evaluate the clinical effect of platelet transfusion, and the safety of platelet transfusion was assessed by the presence or absence of hemolytic transfusion reactions. Results In the bidirectional mismatch group, there was no significant difference in △PLT and CCI among subgroups A, B and C ( P>0.05). In the major mismatch group, the △PLT and CCI of subgroup B were significantly lower than those of subgroups A and C ( P<0.05), but there was no significant difference between subgroup A and C ( P>0.05). In the minor mismatch group, there was no significant difference in △PLT and CCI among subgroups A, B and C ( P>0.05). There was no acute hemolytic transfusion reactions in any of the ABO incompatibility infusion. Conclusion The clinical effect of ABO major mismatch platelet transfusion is obviously weaker than that of ABO compatible platelet transfusion, but did not affect the outcome of subsequent ABO homozygous platelet transfusion. The clinical effect of ABO minor mismatch platelet transfusion is similar to that of ABO compatible platelet transfusion, but could potentially affect the outcome of subsequent ABO homozygous platelet transfusions. No significant hemolytic transfusion reaction was found by ABO incompatible platelet transfusion.
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Modulation of NLRP3 Inflammasome Activity in Subtype Differentiation of THP-1 Cells after Phagocytosis of Aged Erythrocyte
LI Qin, ZHAO Fengyong, ZHANG Jiamin, YANG Ying, GUO Zhonghui, WANG Chen, YANG Qixiu, ZHU Ziyan
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (4): 457-462.   DOI: 10.3969/j.issn.1671-2587.2024.04.005
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Objectives To clarify whether NLRP3 inflammasome can modulate macrophage phagocytic capacity towards red blood cells (RBCs) and regulate macrophage subtype polarization. Methods THP-1 cells with low expression of NLRP3 (ID3 THP-1), cells transfected with an empty vector (shNC THP-1), and wild-type THP-1 cells were used as macrophage models. These cells were incubated with untreated RBCs, water bath-aged RBCs, and IgG-opsonized RBCs, respectively. Flow cytometry was used to detect the phagocytic rate of THP-1 cells to different RBC types and to measure the expression of M1 subtype markers (CD16 and CD86), and M2 subtype markers (CD163 and CD206) on THP-1 cells. Results ID3 THP-1 with reduced NLRP3 expression exhibited significantly downregulated phagocytic capacity towards RBCs. Aged RBCs induced the differentiation of THP-1 cells into the M1 subclass while inhibiting their differentiation into the M2 subclass. Decreased expression of the NLRP3 inflammasome in THP-1 cells led to a downregulation of their ability to differentiate into the M1 subclass following RBC phagocytosis, accompanied by their enhanced capacity to differentiate into the M2 subclass. Conclusion NLRP3 inflammasome can serve as a pivotal regulatory target, governing macrophage phagocytosis of RBCs and their subsequent subclass differentiation.
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Effect of 4 ℃ Cold-Stored Platelets Transfusion on Acute Renal Injury Induced by Hemorrhagic Shock in Rats
QIAO Mingming, Gongjuedunzhu, CHEN Yuanfeng, YU Yuan, YE Hui, ZHUANG Yunlong
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (4): 470-474.   DOI: 10.3969/j.issn.1671-2587.2024.04.007
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Objectives To investigate the effects of 4 ℃ cold-stored platelets (cold storage platelets, CSP) transfusion on acute kidney injury caused by hemorrhagic shock/resuscitation (HS/R) in rats. Methods 20 healthy male SD rats were randomly divided into 4 groups: sham operation group (blank group), HS/R model group (model group), CSP transfusion group, room temperature-stored platelets (RTP) kept at 22 ℃ transfusion group (RTP transfusion group). The rats were executed 24 hours after volume resuscitation, and blood and kidney tissue specimens were collected. Serum concentrations of creatinine (Scr), urea nitrogen (BUN) , cystatin C (CysC) and interleukin-1β (IL-1β) and interleukin-18 (IL-18) in renal tissue were detected in each group. The expression levels of neutrophil gelatinase-associated lipid carrier protein (NGAL) and renal injury cause-1 (KIM-1) in renal tissue were detected by Western Blot method, and the pathological changes of renal tissue were observed by HE staining. Results ①There were no significant differences in baseline body mass, MAP, SCr, BUN and other indexs among four groups ( P>0.05). ②24 h after resuscitation, the levels of SCr ( P<0.05), BUN ( P<0.01), CysC ( P<0.01) were higher in the model group than in the other three groups; the levels of BUN ( P<0.01), SCr ( P=0.037), CysC ( P=0.020) in the CSP infusion group were lower than those in the RTP infusion group. ③Compared with the model group, serum IL-1β and IL-18 levels were significantly lower in both CSP infusion group and RTP infusion group. Compared with the RTP infusion group, serum IL-1β levels were reduced in the CSP infusion group ( P=0.041). Compared with model group, NGAL protein expression was significantly decreased in CSP infusion group ( P<0.01), and KIM-1 protein expression was significantly decreased in both CSP infusion group and RTP infusion group ( P<0.01). Renal histopathological results showed that CSP transfusion could reduce the degree of renal cell degeneration, necrosis and inflammatory cell infiltration. Conclusion Compared with RTP, CSP transfusion could reduce HS/R acute kidney injury in SD rats.
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The Past, Present and Prospect of Whole Blood Transfusion
ZHANG Lingling, LIU Erxiong, LIU Zhixin, AN Qunxing, YIN Wen
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (4): 563-569.   DOI: 10.3969/j.issn.1671-2587.2024.04.022
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Whole blood was the earliest blood product ever used, however, with the advent of component transfusion treatments, whole blood all but disappeared from blood bank lists in the 1970 s. In recent years, based upon the successful military experience, the use of whole blood to resuscitate patients with hemorrhagic trauma has again attracted the attention of the blood transfusion circle,and it has gradually been introduced from the military field to the civilian treatment settings.Based on the guidelines for whole blood transfusion at home and abroad and related published studies, this paper reviews the classification of whole blood, history of whole blood use, whole blood storage and platelet protection, removal of whole blood white blood cells, inactivation of whole blood pathogens, and urgent problems to be solved in scientific and accurate transfusion of whole blood, and looks forward to its future development direction, providing reference for the introduction of whole blood more widely, and the development of blood transfusion medicine.
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JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2022, 24 (5): 545-553.   DOI: 10.3969/j.issn.1671-2587.2022.05.001
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The Study on Hepatocyte Injury Directly Caused by Free Heme
WU Xiaoshuang, AN Ning, CHEN Yaozhen, et al
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2023, 25 (4): 444-449.   DOI: 10.3969/j.issn.1671-2587.2023.04.003
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Objective To investigate whether free heme released in hemolysis could directly damage hepatocytes and disrupt liver function. Methods The mice model of hemolytic transfusion reaction was established, and ALT, AST and other biochemical indexes were detected to analyze the liver function. In vitro, the LO2 cells were stimulated with different concentrations of lysed supernatant of red blood cells and heme respectively. Then the levels of ALT and AST were detected to analyze the liver function. Cell viability was observed by flow cytometry, and cell morphology and skeleton structure were observed by immunofluorescence. Results Abnormal liver function was observed on the mice model of hemolytic transfusion reaction. The results of in vitro experiments showed that LO2 cell viability decreased and the proportion of dead cells increased along with the incremental concentration of free heme. The biochemical indexes such as ALT and AST were aggravated significantly. And free heme could directly destroy the cytoskeleton of LO2 cells. Conclusion Free heme can directly destroy the cell structure of hepatocytes, inhibit cell vitality, induce cell death and abnormal liver function. The degree of damage is positively correlated with the concentration of free heme.
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Hydrogel-loaded PRP for the Treatment of Chronic Refractory Wounds
WANG Zilin, LIU Hongjie, ZHANG Ya, et al
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2023, 25 (4): 564-571.   DOI: 10.3969/j.issn.1671-2587.2023.04.027
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The treatment of chronic non-healing wounds remain challenging in terms of complexity. Although platelet rich plasma (PRP) therapy has been widely proven effective, the traditional method of in vitro activation of PRP leads to the rapid release of all growth factors. Due to the separation of colloid and supernatant after activation, the factor-rich supernatant is easy to flow and lose, and it is difficult to form a stable structure, which affects its therapeutic effect. To overcome this problem, researchers in recent years have explored hydrogels as carriers for PRP to improve the shortcomings of traditional PRP treatment. This article reviews the latest research on hydrogel-loaded PRP for the treatment of chronic non-healing wounds and provides a reference for optimal treatment.
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Effect of Apheresis Platelets Transfusion on Proliferation and Metastasis of Hepatocellular Carcinoma Cells
LUO Jingling, YANG Lei
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2023, 25 (4): 456-460.   DOI: 10.3969/j.issn.1671-2587.2023.04.005
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Objective To investigate the effects of platelets with different storage days and quantities on the proliferation of liver cancer cells. Methods Twelve type O platelet braids were collected from Nanning Central Blood Station and sent to the First Affiliated Hospital of Guangxi University of Traditional Chinese Medicine. According to the storage days, they were divided into fresh PLT group and old PLT group, of which the fresh PLT group was platelets stored for 1 day. In the old PLT group, platelets stored for 4 days were used. The two groups of platelets were co-cultured with human liver cancer cell Huh-7. The confluence degree of Huh-7 cells in each group within 48 hours was observed by scratch test, and the invasion ability of Huh-7 cells in each group within 24 hours was observed by transwell test. Results The results of scratch test showed that the proliferation ability of Huh-7 cells was significantly enhanced after co-culture with platelets. When the same amount of PLT was added, old PLT could promote the proliferation of Huh-7 cells more strongly. When PLT with the same storage days was added, PLT with a higher number generally showed a relatively stronger ability to stimulate cell proliferation. The results of transwell experiment were similar to the results of scratch. When the number of PLT was the same, the number of Huh-7 cells invaded by old PLT group was more than that of fresh PLT group, and the difference was statistically significant (P<0.05). The more PLT was added into Huh-7 cells, the more invasive cells occurred in the fresh PLT group and the old PLT group, and the difference was statistically significant (P<0.05). Conclusion The ability of platelets to promote cell proliferation and invasion is positively correlated with the storage time of platelets and the number of platelets. The application rules of platelet products need to be analyzed according to the specific clinical conditions. In the treatment of patients with neoplastic diseases, the application of old platelets should be avoided as far as possible, and the transfusion of platelets should be minimized when platelets have to be used, so as to achieve the purpose of slowing down the proliferation and metastasis of tumor cells.
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Screening Analysis of HLA Antibodies of Blood Donors in Shanghai Area
CAI Yin, CHEN Zhiying, JIANG Ling, REN Yana, ZHENG Lan, ZHOU Guoping
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (6): 777-780.   DOI: 10.3969/j.issn.1671-2587.2024.06.011
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Objective To know the frequency of HLA antibodies in donors in Shanghai area, to provide basic data for the research on TRALI. Methods Samples of blood donors from October 2020 to April 2021 were randomly selected to detect HLA-specific antibodies by flow cytometry and microbead method, and the incidence of HLA antibodies was statistically analyzed. Results In 9 797 serum samples of blood donors, 1 715 (17.51%) were positive for HLA antibodies, among which the frequency of HLA antibodies in males and females was 4.81% and 28.08%. Excluding the history of blood transfusion, the frequency of HLA antibodies in women with no pregnancy history and women with pregnancy history was 12.10% and 36.62%, and comparative analysis the group of once, twice and three or more times pregnancies donors population, which frequency of HLA antibodies was 29.97%, 40.70% and 44.80%. The frequency of HLA antibodies in female donors with multiple pregnancy history was significantly higher than that in single pregnancy ( P<0.05). Conclusion Consultation of pregnancy history and HLA antibodies detection of female blood donors in blood stations can prevent from the occurrence of TRALI.
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Biological Effects of Human Serum Albumin from Different Sources on Vascular Endothelial Cells
LIU Qing, WANG Zongkui, XU Jun, CHEN Lu, LI Changqing, DU Xi, MA Li
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (5): 577-586.   DOI: 10.3969/j.issn.1671-2587.2024.05.001
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Objective To evaluate the differential biological effects of human serum albumin (HSA) derived from different sources on vascular endothelial cells. Methods Human umbilical vein endothelial cells (HUVEC) were serum-starved and then exposed to HSA from varied sources. Cellular responses were assessed using the CCK-8 assay for proliferation, Annexin V-FITC kit for apoptosis, and flow cytometry for cell cycle analysis. The proliferative, apoptotic and cell cycle effects of HSA from different sources were statistically compared. Additionally, the impact of HSA on HUVEC cell migration and tube formation was assessed via scratch assays and tube formation experiments. Results Yeast-derived rHSA1 did not affect HUVEC proliferation ( P=0.49, q=1.601), while other HSA sources significantly promoted it ( P<0.001, F=10.84). All HSA treatment groups exhibited an inhibitory effect on HUVEC apoptosis ( P<0.001), with no statistically significant differences in the proportions of live cells ( P=0.07, F=2.415), apoptotic cells ( P=0.2, F=1.624), and dead cells ( P=0.28, F=1.376) across treatment groups. Compared to the serum-free control group, except for the pHSA2 and pHSA6 treatment groups, which showed a significant decrease in G0/G1 phase cell proportion ( P<0.001) and a significant increase in G2/M phase cell proportion ( P<0.01), the proportions of cells in other cell cycle phases did not show significant changes in the HSA treatment groups. In the scratch assay, in contrast to the serum-free control group, the pHSA(1) and pHSA(2) groups exhibited a higher degree of wound healing at 12 h ( P<0.001), 24 h ( P<0.001), and 36 h ( P<0.001, P=0.002); however, no significant differences were observed in the rHSA(1) and rHSA(2) groups compared to the control group. Likewise, in the tube formation assay, the pHSA(1) and pHSA(2) groups significantly enhanced node formation ( P=0.001, P=0.005), tubular branching ( P<0.001), and mesh structure development ( P<0.001), whereas the rHSA(1) and rHSA(2)groups showed no such enhancements. Conclusion HSA from different sources significantly inhibits endothelial cell apoptosis under serum-free conditions, but exerts varying effects on proliferation, cell cycle regulation, cell migration, and tube formation of vascular endothelial cells.
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Strengthening the Application of Centrifugal Technology and Establishing a Combined Apheresis/Blood Purification System in the Department of Transfusion Medicine
ZHUANG Yuan, YU Yang
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (6): 721-725.   DOI: 10.3969/j.issn.1671-2587.2024.06.001
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Non-transfusional hemotherapy should be mainly carried out by the Transfusion Department, which basis is the apheresis technology by centrifugation. The plasmapheresis can be realized in two ways: centrifugal and membrane filtration, each of which has its own technical characteristics. Apheresis/blood purification based on centrifugation shows the advantages of higher plasma separation efficiency, shorter treatment time, less platelet loss, less destruction of red blood cells, and the use of citrate anticoagulation for non-continuous clinical treatment of critically ill patients. Secondary columns suitable for centrifugal technology can realize immunoadsorption, artificial liver support system, centrifugation-filtration plasmapheresis and inflammatory factor adsorption. Using increasingly sophisticated secondary column technology should be a useful supplement to traditional TPE.
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Differential Expression and Clinical Significance of Vascular Cell Adhesion Molecule-1 in Plasma of Neonates with ABO Hemolytic Disease
SHEN Qianyun, CHENG Wenguo, HOU Shuning, YAO Genghong
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (6): 744-749.   DOI: 10.3969/j.issn.1671-2587.2024.06.005
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Objective Detecting the plasma vascular cell adhesion molecule 1 (VCAM-1) level in neonates with ABO hemolytic disease (HDN), to predict the degree of endothelial damage and in vivo hemolysis in ABO-HDN children. Methods A total of 127 cases of ABO-HDN attending our hospital between June 2022 and June 2023 were retrospectively collected, and further divided into three subgroups, namelymild, moderate, and severe hyperbilirubinemia. 127 healthy newborns with matching maternal and infant blood groups were recruited as a healthy control group. 41 cases of non-hemolytic jaundice were set up as the control group. A triple hemolytic test clarified the diagnosis of ABO-HDN, and all samples were tested for blood type and irregular antibodies. Plasma VCAM-1 were determined by enzyme-linked immunosorbent assay. Results 1 There was no statistically significant difference between the ABO-HDN group and the healthy control group regarding the sex of the newborns, birth weight, blood type, mode of delivery of their mothers, and the presence or absence of preterm rupture of membranes ( P>0.05), and the neonatal gestational age, maternal age, and number of pregnancies showed significant differences between the two groups ( P<0.05). There were differences in hemoglobin (Hb), reticulocyte (Ret), indirect bilirubin (IBIL), lactate dehydrogenase (LDH), high-sensitivity C-reactive protein (hs-CRP) and plasma VCAM-1 ( P<0.05, and the levels of VCAM-1 were positively correlated with the levels of LDH, IBIL, and Ret, and negatively correlated with the levels of Hb ( P<0.05). VCAM-1 levels in the ABO-HBN group showed independent correlations with Hb, Ret, IBIL, and LDH levels ( P<0.05). Among the three subgroups, VCAM-1 levels were significantly higher in the severe hyperbilirubinemia group than in the mild and moderate hyperbilirubinemia groups ( P<0.05). Conclusion Elevated VCAM-1 in children with ABO-HDN may be associated with vascular endothelial damage and with help in assessing the severity of hemolysis in the disease.
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Advances in Non-invasive Cell-free Fetal DNA Blood Group Testing in Prenatal Diagnosis
REN Daoju, LI Xiaowei, LI Cuiying
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (6): 835-842.   DOI: 10.3969/j.issn.1671-2587.2024.06.020
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Cell-free fetal DNA (cff-DNA) exists in the peripheral blood of pregnant women during gestation, and it carries DNA fragments with relevant genetic information of the fetus, which can be screened for fetal chromosomal and gene-related diseases. It is now widely used in non-invasive prenatal testing (NIPT) because of its low operational risk and lack of side effects. Non-invasive cff-DNA blood group testing uses molecular technology to detect the genes associated with cff-DNA blood grouping, resulting in a fetal blood group. The test can be used to detect the consistency of fetal and maternal blood groups during pregnancy and to determine the risk of hemolytic disease of the fetus and newborn (HDFN) due to blood group incompatibility.
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Research Progress of mTOR Pathway in Regulating Self-renewal and Differentiation of Hematopoietic Stem Cells
WANG Jiaqi, XIAO Jun, LI Cuiying
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (6): 818-824.   DOI: 10.3969/j.issn.1671-2587.2024.06.018
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The mammalian target of rapamycin (mTOR) is a serine/threonine protein kinase that plays an important role in regulating cell growth, proliferation.The mTOR complex regulates cell growth, proliferation, protein metabolism by phosphorylating and activating downstream substrates such as S6K1, 4E-BP, etc. The mTOR signalling pathway similarly plays an important role in the haematopoietic system, integrating multiple signals to regulate the three processes of haematopoietic stem cell quiescence, self-renewal and multidirectional differentiation.This article systematically describes how relevant signalling molecules and proteins affect the mTOR signalling pathway and further influence haematopoietic stem cell function.
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Research Progress on the Mechanism of Platelet Senescence
YANG Huayue, LOU Can, LEI Hang, CAI Xiaohong
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (5): 709-714.   DOI: 10.3969/j.issn.1671-2587.2024.05.022
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In recent years, the mechanisms of platelet aging have garnered increasing attention. With advancements in detection technologies, researchers are now able to study the age stratification of platelets in the peripheral blood of healthy individuals, revealing extensive changes at both the transcriptomic and proteomic levels during the aging process. Pathophysiological studies have further elucidated the critical role of platelets in various diseases, closely associated with age-related changes in platelets. However, the specific characteristics of platelet aging and their precise role in disease development remain to be fully elucidated. Therefore, understanding the physiological characteristics and molecular mechanisms of aging platelets under normal conditions is crucial for research. This review summarizes the transcriptomic and proteomic studies on platelet aging in physiological conditions, as well as the changes in platelet turnover in related diseases, aiming to provide a reference for exploring the relationship between platelet aging and disease development.
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Specific Reactive T Cells from Allo-Blood Donors'PBMC Induced by Tumor Neoantigen Peptides
YANG Ying, LU Li-Ming, LI Qin, et al
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2022, 24 (5): 565-573.   DOI: 10.3969/j.issn.1671-2587.2022.05.004
Abstract1812)   HTML12)    PDF(pc) (2284KB)(1666)       Save
Objective To observe whether neoantigen peptides sequenced from tumor patients can induce allo-donor sourced PBMC to be specific reactive T cell. Methods PBMC were separated from healthy donors' buffy coat, then monocytes were collected using adhesion method, remaining PBL was kept frozen in -80℃. GM-CSF and IL-4 were added to induce monocytes into dendritic cells every three days. At Day 7 mature dendritic cells were harvested and plated in 24 well-plates, then these plates were loaded with 16 neoantigen peptides as one peptide in each well, 13/16 peptides were designed by our team. Five hours later PBLs recovered from -80℃ were added into these plates to be co-cultured with these treated DC in ratio of 4~10∶1. No peptide wells (DC only) were negative controls, and PBL only wells were prepared for adding PHA later as positive control. IL-2 was replenished in these plates every three days. Peptides were pulsed twice more at Day 14 and Day 21 respectively. Supernatant of each well was collected at Day 22 to measure IFN-γ concentration using ELISA methods, remaining cells were analyzed using Flowcytometry to measure the percentages of CD3 +IFN-γ + or CD8 +IFN-γ +Tcells. Results 10 of 13 peptides can induce more than 3 kinds of PBL to proliferate into reactive CD3 + or CD8 + T cells, similar increases were also found in IFN-γ concentration(r=0.66, 0.58 for CD3 +, CD8 + respectively, P<0.05) in supernatant by ELISA method. Conclusions Our research data demonstrate these neoantigen peptides sequenced from tumor patients can induce allo-blood donors'PBMC proliferate to neoantigen specific reactive T cells.
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Acceleration of HCMV Replication in HFF Cells by Oxidative Stress-induced Autophagy
XIAO Jun, DENG Jiang, LI Xiaowei, LI Cuiying
JOURNAL OF CLINICAL TRANSFUSION AND LABORATORY MEDICINE    2024, 26 (6): 735-739.   DOI: 10.3969/j.issn.1671-2587.2024.06.003
Abstract1796)   HTML9)    PDF(pc) (3005KB)(85)       Save
Objective To provide new insights into the prevention and treatment of human cytomegalovirus (HCMV) by observing the effect of autophagy induced by oxidative stress on the proliferation of HCMV in cells. Methods Using PCR to amplify the LC3B encoding fragment, an autophagy expression vector was constructed to observe the formation of cellular autophagy. Then, HFF cells infected with HCMV (AD169) for 72 hours were collected. The levels of UL122 expression and viral particles were detected by real-time quantitative PCR. And the viral protein pp65 expression level and the proliferation of virion were detected by Western blot and TCID 50, respectively. Results Autophagy detection vectors were successfully constructed, which could be used to indicate the formation of cellular autophagy. Compared with normal cultured cells, oxidative stress could induce autophagy formation, and upregulated UL122 gene expression, pp65 protein levels and viral load by this pathway. The viral titer test also showed that autophagy could promote the replication of HCMV in cells. Conclusion Oxidative stress can induce autophagy and promote the replication and proliferation of HCMV, while autophagy inhibitor 3-MA can inhibit the replication of HCMV promoted by oxidative stress. It is confirmed that autophagy is one of the mechanisms of oxidative stress promoting the replication and proliferation of HCMV.
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