1.Berberine ameliorates coronary artery endothelial cell injury in Kawasaki disease through complement and coagulation cascades.
Jin-Wen LIAO ; Xin GUO ; Bo LIANG ; Xu-Xia LI ; Ming-Guo XU
Chinese Journal of Contemporary Pediatrics 2025;27(1):101-108
OBJECTIVES:
To explore the role of berberine (BBR) in ameliorating coronary endothelial cell injury in Kawasaki disease (KD) by regulating the complement and coagulation cascade.
METHODS:
Human coronary artery endothelial cells (HCAEC) were divided into a healthy control group, a KD group, and a BBR treatment group (n=3 for each group). The healthy control group and KD group were supplemented with 15% serum from healthy children and KD patients, respectively, while the BBR treatment group received 15% serum from KD patients followed by the addition of 20 mmol/L BBR. Differential protein expression was analyzed and identified using isobaric tags for relative and absolute quantitation technology and liquid chromatography-tandem mass spectrometry, followed by GO functional enrichment analysis and KEGG signaling pathway enrichment analysis of the differential proteins. Western blot was used to detect differential protein expression.
RESULTS:
A total of 518 differential proteins were identified between the KD group and the healthy control group (300 upregulated proteins and 218 downregulated proteins). A total of 422 differential proteins were identified between the BBR treatment group and the KD group (221 upregulated proteins and 201 downregulated proteins). Bioinformatics analysis showed that compared to the healthy control group, the differential proteins in the KD group were enriched in the complement and coagulation cascade and ribosome biogenesis in eukaryotes. Compared to the KD group, the differential proteins in the BBR treatment group were also enriched in the complement and coagulation cascade and ribosome biogenesis in eukaryotes. Western blot results indicated that compared to the healthy control group, the expression of complement C1q subcomponent subunit C (C1QC), kininogen-1 (KNG1), complement C1s subcomponent (C1S), and C4b-binding protein alpha chain (C4BPA) was increased in the KD group (P<0.05). Compared to the KD group, the expression of KNG1, C1S, C1QC, and C4BPA was decreased in the BBR treatment group (P<0.05).
CONCLUSIONS
The complement and coagulation cascade may be involved in the regulation of BBR treatment for coronary injury in KD, and C1QC, KNG1, C1S, and C4BPA may serve as biomarkers for this treatment.
Mucocutaneous Lymph Node Syndrome/blood*
;
Humans
;
Endothelial Cells/pathology*
;
Complement System Proteins/physiology*
;
Coronary Vessels/drug effects*
;
Male
;
Blood Coagulation/drug effects*
;
Berberine/therapeutic use*
;
Female
;
Child, Preschool
;
Infant
2.Application value of thromboelastography in assessing coagulation function in children with severe hemophilia A after emicizumab therapy: a single-center study.
Dong PENG ; Ying WANG ; Gui-Chi ZHOU ; Qian LI ; Mei-Zhu LUO ; Li-Ping LUO ; Ya-Xian KUANG ; Xiao-Ying FU
Chinese Journal of Contemporary Pediatrics 2025;27(3):293-299
OBJECTIVES:
To investigate the application value of thromboelastography (TEG) in assessing coagulation function in children with severe hemophilia A (HA) after emicizumab (EMI) therapy.
METHODS:
A retrospective analysis was performed on the activated partial thromboplastin time (APTT) and TEG testing results of 17 children with severe HA before and after EMI treatment at Shenzhen Children's Hospital from January 2023 to July 2024. Correlation analysis was conducted between coagulation factor VIII (FVIII) equivalent activity and reaction time (R value) measured by TEG.
RESULTS:
After EMI treatment, the mean bleeding rate for children with severe HA was 1.6 events per year, with 15 children (88%) without spontaneous bleeding or joint bleeding. The children with severe HA showed a significant reduction in APTT after EMI treatment (P<0.05), with a significantly shorter APTT than the normal control group (P<0.05). There was no correlation between APTT and FVIII equivalent activity after treatment (P>0.05). After EMI treatment, TEG parameters, including R value, kinetic time, alpha angle (α), maximum amplitude, clot strength, and coagulation index, shifted from a hypocoagulable state before treatment to a nearly normal state after treatment (P<0.05). The R value demonstrated a strong negative correlation with FVIII equivalent activity (r=-0.758, P<0.05).
CONCLUSIONS
The bleeding condition of children with severe HA can be effectively controlled after EMI treatment. Routine APTT testing cannot reflect true coagulation function, whereas TEG testing is clinically valuable in assessing the coagulation function of children with severe HA undergoing EMI treatment.
Humans
;
Thrombelastography
;
Hemophilia A/physiopathology*
;
Male
;
Child
;
Antibodies, Bispecific/therapeutic use*
;
Antibodies, Monoclonal, Humanized/therapeutic use*
;
Blood Coagulation/drug effects*
;
Child, Preschool
;
Retrospective Studies
;
Female
;
Partial Thromboplastin Time
;
Adolescent
;
Infant
3.Thirteen serum biochemical indexes and five whole blood coagulation indices in a point-of-care testing analyzer: ideal protocol for evaluating pulmonary and critical care medicine.
Mingtao LIU ; Li LIU ; Jiaxi CHEN ; Zhifeng HUANG ; Huiqing ZHU ; Shengxuan LIN ; Weitian QI ; Zhangkai J CHENG ; Ning LI ; Baoqing SUN
Journal of Zhejiang University. Science. B 2025;26(2):158-171
The accurate and timely detection of biochemical coagulation indicators is pivotal in pulmonary and critical care medicine. Despite their reliability, traditional laboratories often lag in terms of rapid diagnosis. Point-of-care testing (POCT) has emerged as a promising alternative, which is awaiting rigorous validation. We assessed 226 samples from patients at the First Affiliated Hospital of Guangzhou Medical University using a Beckman Coulter AU5821 and a PUSHKANG POCT Biochemistry Analyzer MS100. Furthermore, 350 samples were evaluated with a Stago coagulation analyzer STAR MAX and a PUSHKANG POCT Coagulation Analyzer MC100. Metrics included thirteen biochemical indexes, such as albumin, and five coagulation indices, such as prothrombin time. Comparisons were drawn against the PUSHKANG POCT analyzer. Bland-Altman plots (MS100: 0.8206‒0.9995; MC100: 0.8318‒0.9911) evinced significant consistency between methodologies. Spearman correlation pinpointed a potent linear association between conventional devices and the PUSHKANG POCT analyzer, further underscored by a robust correlation coefficient (MS100: 0.713‒0.949; MC100: 0.593‒0.950). The PUSHKANG POCT was validated as a dependable tool for serum and whole blood biochemical and coagulation diagnostics. This emphasizes its prospective clinical efficacy, offering clinicians a swift diagnostic tool and heralding a new era of enhanced patient care outcomes.
Humans
;
Point-of-Care Testing
;
Critical Care
;
Blood Coagulation Tests/methods*
;
Male
;
Blood Coagulation
;
Female
;
Middle Aged
;
Reproducibility of Results
;
Prothrombin Time
;
Aged
;
Adult
;
Point-of-Care Systems
4.Application value of pediatric sepsis-induced coagulopathy score and mean platelet volume/platelet count ratio in children with sepsis.
Jie HAN ; Xifeng ZHANG ; Zhenying WANG ; Guixia XU
Chinese Critical Care Medicine 2025;37(4):361-366
OBJECTIVE:
To investigate the application value of pediatric sepsis-induced coagulation (pSIC) score and mean platelet volume/platelet count (MPV/PLT) ratio in the diagnosis of pediatric sepsis and the determination of critical pediatric sepsis.
METHODS:
A retrospective cohort study was conducted, selecting 112 children with sepsis (sepsis group) admitted to pediatric intensive care unit (PICU) of Liaocheng Second People's Hospital from January 2020 to December 2023 as the study objects, and 50 children without sepsis admitted to the pediatric surgery department of our hospital during the same period for elective surgery due to inguinal hernia as the control (control group). The children with sepsis were divided into two groups according to the pediatric critical case score (PCIS). The children with PCIS score of ≤ 80 were classified as critically ill group, and those with PCIS score of > 80 was classified as non-critically ill group. pSIC score, coagulation indicators [prothrombin time (PT), international normalized ratio (INR), activated partial thromboplastin time (APTT), and fibrinogen (FIB)], and platelet related indicators (PLT, MPV, and MPV/PLT ratio) were collected. Pearson correlation method was used to analyze the correlation between pSIC score and MPV/PLT ratio as well as their correlation with coagulation indicators. Multivariate Logistic regression analysis was used to screen the independent risk factors for pediatric sepsis and critical pediatric sepsis. Receiver operator characteristic curve (ROC curve) was drawn to evaluate the application value of the above independent risk factors on the diagnosis of pediatric sepsis and the determination of critical pediatric sepsis.
RESULTS:
112 children with sepsis and 50 children without sepsis were enrolled in the final analysis. pSIC score, PT, INR, APTT, FIB, MPV, and MPV/PLT ratio in the sepsis group were significantly higher than those in the control group [pSIC score: 0.93±0.10 vs. 0.06±0.03, PT (s): 14.76±0.38 vs. 12.23±0.15, INR: 1.26±0.03 vs. 1.06±0.01, APTT (s): 40.08±0.94 vs. 32.47±0.54, FIB (g/L): 3.51±0.11 vs. 2.31±0.06, MPV (fL): 8.86±0.14 vs. 7.62±0.11, MPV/PLT ratio: 0.037±0.003 vs. 0.022±0.001, all P < 0.01], and PLT was slightly lower than that in the control group (×109/L: 306.00±11.01 vs. 345.90±10.57, P > 0.05). Among 112 children with sepsis, 46 were critically ill and 66 were non-critically ill. pSIC score, PT, INR, APTT, MPV, and MPV/PLT ratio in the critically ill group were significantly higher than those in the non-critically ill group [pSIC score: 1.74±0.17 vs. 0.36±0.07, PT (s): 16.55±0.80 vs. 13.52±0.23, INR: 1.39±0.07 vs. 1.17±0.02, APTT (s): 43.83±1.72 vs. 37.77±0.95, MPV (fL): 9.31±0.23 vs. 8.55±0.16, MPV/PLT ratio: 0.051±0.006 vs. 0.027±0.001, all P < 0.05], PLT was significantly lower than that in the non-critically ill group (×109/L: 260.50±18.89 vs. 337.70±11.90, P < 0.01), and FIB was slightly lower than that in the non-critically ill group (g/L: 3.28±0.19 vs. 3.67±0.14, P > 0.05). Correlation analysis showed that pSIC score was significantly positively correlated with MPV/PLT ratio and coagulation indicators including PT, APTT and INR in pediatric sepsis (r value was 0.583, 0.571, 0.296 and 0.518, respectively, all P < 0.01), and MPV/PLT ratio was also significantly positively correlated with PT, APTT and INR (r value was 0.300, 0.203 and 0.307, respectively, all P < 0.05). Multivariate Logistic regression analysis showed that pSIC score and MPV/PLT ratio were independent risk factors for pediatric sepsis and critical pediatric sepsis [pediatric sepsis: odds ratio (OR) and 95% confidence interval (95%CI) for pSIC score was 14.117 (4.190-47.555), and the OR value and 95%CI for MPV/PLT ratio was 1.128 (1.059-1.202), both P < 0.01; critical pediatric sepsis: the OR value and 95%CI for pSIC score was 8.142 (3.672-18.050), and the OR value and 95%CI for MPV/PLT ratio was 1.068 (1.028-1.109), all P < 0.01]. ROC curve analysis showed that pSIC score and MPV/PLT ratio had certain application value in the diagnosis of pediatric sepsis [area under the ROC curve (AUC) and 95%CI was 0.754 (0.700-0.808) and 0.720 (0.643-0.798), respectively] and the determination of critical pediatric sepsis [AUC and 95%CI was 0.849 (0.778-0.919) and 0.731 (0.632-0.830)], and the combined AUC of the two indictors was 0.815 (95%CI was 0.751-0.879) and 0.872 (95%CI was 0.806-0.938), respectively.
CONCLUSIONS
pSIC score and MPV/PLT ratio have potential application value in the diagnosis of pediatric sepsis and the determination of critical pediatric sepsis, and the combined application of both is more valuable.
Humans
;
Sepsis/complications*
;
Platelet Count
;
Mean Platelet Volume
;
Retrospective Studies
;
Child
;
Blood Coagulation Disorders/diagnosis*
;
Intensive Care Units, Pediatric
;
Male
;
Female
;
Partial Thromboplastin Time
;
Child, Preschool
;
Blood Coagulation
;
International Normalized Ratio
;
Infant
5.Coagulation profile PT, FBG, FDP, D-D as disease predictors of RA and pSS inflammatory immunity.
Wenwen MIN ; Lei WAN ; Feng LI ; Yu ZHANG ; Ying WANG ; Siyu LIANG
Chinese Journal of Cellular and Molecular Immunology 2025;41(10):895-904
Objective To explore the expression of coagulation indexes in rheumatoid arthritis (RA) and dry syndrome (pSS) and their relationships with inflammation and immune function. Methods A total of 61 patients with RA who were hospitalized in the Department of Rheumatology of Anhui Provincial Hospital of Traditional Chinese Medicine from March 12 to September 9, 2024 were selected as the RA group. And 61 patients with pSS who were hospitalized in the Department of Rheumatology of the same hospital September 4, 2023, to August 17, 2024, were selected as the pSS group. 61 healthy individuals who underwent routine medical checkups at the Physical Examination Center of Anhui Provincial Hospital of Traditional Chinese Medicine during the same period were included as the control group. Baseline clinical indexes before treatment were collected from patients in each group, including prothrombin time(PT), international normalized ratio(INR), thrombia time(TT), fibrinogen(FBG), activated partial thromboplastin time(APTT), fibrin (ogen) degradation products(FDP) and D-Dimer(D-D). Results The expression levels of PT, FBG, TT, FDP, and D-D in the RA group, the pSS group, and the normal group were significantly different. The expression levels of PT, FBG, FDP, and D-D in the RA group were all higher than those in the pSS group and the control group, respectively. And the expression level of TT in the pSS group was lower than that in control group. ROC curve analysis showed that the AUC of PT was 0.638, the AUC of FBG was 0.899, the AUC of FDP was 0.866, and the AUC of D-D was 0.919 in the RA group compared with the normal group. And the AUC of coagulation indexes for joint diagnosis of RA was higher than that of the indexes detected individually. pSS group had an AUC of PT of 0.618 compared with that of the normal group. The AUC of TT was 0.645, and the AUC of coagulation indexes for the joint diagnosis of pSS was higher than the AUC of each index detected separately. Association rule analysis showed that elevated D-D in RA patients had a significant correlation with elevated hs-CRP, CCP and RF, and elevated FBG had a significant correlation with elevated hs-CRP, ESR, RF and CCP. Elevated D-D in pSS patients had a correlation with elevated hs-CRP and anti-SSA, and elevated INR has correlation with elevated hs-CRP, anti-SSA and anti-SSB. Correlation analysis showed that PT, INR, FBG, FDP, and D-D were positively correlated with CRP and ESR, and TT was negatively correlated with CRP and ESR in the RA group. FBG, FDP, and D-D were positively correlated with CRP and ESR in the pSS group. Moreover, coagulation indexes were positively correlated with immune indexes in RA group and pSS group which were all significant. The results of multiple linear regression analysis showed that FBG was a positive correlate of hs-CRP and ESR in RA patients. For PSS patients, FBG and FDP were positive correlates of hs-CRP. APTT and FBG were positive correlates of ESR. Conclusion Compared with pSS, coagulation indexes (especially PT, FBG, FDP and D-D) are more informative for the early diagnosis of RA and the judgment of the degree of the disease, and can be used as an important predictor for the confirmation of the diagnosis of RA.
Humans
;
Female
;
Male
;
Arthritis, Rheumatoid/diagnosis*
;
Middle Aged
;
Fibrin Fibrinogen Degradation Products/analysis*
;
Blood Coagulation
;
Adult
;
Fibrinogen/metabolism*
;
Partial Thromboplastin Time
;
Prothrombin Time
;
Aged
;
Inflammation/immunology*
;
ROC Curve
6.Explainable machine learning model for predicting septic shock in critically sepsis patients based on coagulation indexes: A multicenter cohort study.
Qing-Bo ZENG ; En-Lan PENG ; Ye ZHOU ; Qing-Wei LIN ; Lin-Cui ZHONG ; Long-Ping HE ; Nian-Qing ZHANG ; Jing-Chun SONG
Chinese Journal of Traumatology 2025;28(6):404-411
PURPOSE:
Septic shock is associated with high mortality and poor outcomes among sepsis patients with coagulopathy. Although traditional statistical methods or machine learning (ML) algorithms have been proposed to predict septic shock, these potential approaches have never been systematically compared. The present work aimed to develop and compare models to predict septic shock among patients with sepsis.
METHODS:
It is a retrospective cohort study based on 484 patients with sepsis who were admitted to our intensive care units between May 2018 and November 2022. Patients from the 908th Hospital of Chinese PLA Logistical Support Force and Nanchang Hongdu Hospital of Traditional Chinese Medicine were respectively allocated to training (n=311) and validation (n=173) sets. All clinical and laboratory data of sepsis patients characterized by comprehensive coagulation indexes were collected. We developed 5 models based on ML algorithms and 1 model based on a traditional statistical method to predict septic shock in the training cohort. The performance of all models was assessed using the area under the receiver operating characteristic curve and calibration plots. Decision curve analysis was used to evaluate the net benefit of the models. The validation set was applied to verify the predictive accuracy of the models. This study also used Shapley additive explanations method to assess variable importance and explain the prediction made by a ML algorithm.
RESULTS:
Among all patients, 37.2% experienced septic shock. The characteristic curves of the 6 models ranged from 0.833 to 0.962 and 0.630 to 0.744 in the training and validation sets, respectively. The model with the best prediction performance was based on the support vector machine (SVM) algorithm, which was constructed by age, tissue plasminogen activator-inhibitor complex, prothrombin time, international normalized ratio, white blood cells, and platelet counts. The SVM model showed good calibration and discrimination and a greater net benefit in decision curve analysis.
CONCLUSION
The SVM algorithm may be superior to other ML and traditional statistical algorithms for predicting septic shock. Physicians can better understand the reliability of the predictive model by Shapley additive explanations value analysis.
Humans
;
Shock, Septic/blood*
;
Machine Learning
;
Male
;
Female
;
Retrospective Studies
;
Middle Aged
;
Aged
;
Sepsis/complications*
;
ROC Curve
;
Cohort Studies
;
Adult
;
Intensive Care Units
;
Algorithms
;
Blood Coagulation
;
Critical Illness
7.Predictive value of combined examination of coagulation and fibrinolysis indexes for deep venous thrombosis after proximal femoral nail anti-rotation in elderly patients with femoral intertrochanteric fracture.
Hong-Feng ZHANG ; An-Ji HE ; Xi-Lin ZHAO
China Journal of Orthopaedics and Traumatology 2025;38(4):371-377
OBJECTIVE:
To investigate the prognostic significance of combined coagulation and fibrinolysis marker analysis in predicting the development of deep venous thrombosis (DVT) following proximal femoral anti-rotation intramedullary nail (PFNA) surgery in elderly patients with intertrochanteric femur fractures.
METHODS:
A retrospective analysis was conducted on the clinical data of 80 elderly patients who underwent PFNA treatment for intertrochanteric fractures between April 2019 and April 2023. There were 26 males and 54 females. The patients' ages ranged from 60 to 85 years old, with a mean age of (76.4±5.6) years old. According to the occurrence of DVT following PFNA, patients were categorized into two groups. The DVT group were 29 patients, comprising 10 males and 19 females with a mean age of (76.9 ± 6.1)years old. And the non-DVT group were 51 patients, consisting of 16 males and 35 females with a mean age of (75.3 ± 6.9 )years old. The prothrombin time (PT), activated partial thromboplastin time(APTT), thrombin time(TT), plasma fibrinogen (FIB), plasma thrombin-antithrombin complex(TAT), and D-dimer levels were compared between the two groups immediately post- PFNA surgery, as well as at 3 and 7 days postoperatively. Pearson correlation analysis was conducted to evaluate the relationship between plasma FIB, TAT, and D-dimer levels in patients who developed DVT. Multivariate logistic regression analysis was employed to assess the association between each coagulation and fibrinolysis index following PFNA surgery in elderly patients and the incidence of DVT. The area under the receiver operating characteristic (ROC) curve (AUC) was utilized to determine the predictive value of PT, APTT, TT, FIB, TAT, and D-dimer for postoperative DVT occurrence.
RESULTS:
There were no statistically significant differences in PT, APTT, and TT between the two groups immediately post-surgery, at 3 days, and at 7 days (P>0.05). At immediately, 3 days and 7 days postoperatively in DVT group, FIB were (4.68±1.77), (6.73±2.02), (8.81±2.86) g·L-1, TAT were (10.64±2.30), (12.88±3.45), (14.96±4.87) μg·L-1 respectively. D-dimer were (635.00±100.88), (720.02±168.09), (810.47±170.19) μg· L-1, respectively.In the DVT group FIB were (3.46±0.47), (3.55±0.52), (3.67±0.48) g·L-1, TAT were (8.58±3.37), (8.69±3.48), (8.80±3.50) g·L-1, D-dimer were (588.36±96.68), (589.58±96.45), (591.11±95.50) g·L-1. The difference between the two groups was statistically significant (P<0.05). Pearson correlation analysis revealed significant positive correlations between FIB and D-dimer(r=0.428, 0.523, P<0.05), FIB and TAT(r=0.517, 0.411, P<0.05), as well as TAT and D-dimer(r=0.602, 0.596, P<0.05). Multivariate Logistic regression analysis revealed that FIB OR=3.252, 95% CI(0.640, 3.975), P<0.01, TAT OR=1.461, 95% CI(1.059, 2.011), P<0.05, and D-dimer OR=3.830, 95%CI (2.032 to 7.213), P<0.01 were significantly associated with the development of DVT following PFNA surgery. The combined detection of PT, APTT, TT, FIB, TAT, and D-dimer demonstrates significantly greater predictive value for the occurrence of DVT following PFNA surgery compared to individual index detection (P<0.01).
CONCLUSION
The combined detection of PT, APTT, TT, FIB, TAT and D-D has a high predictive value for DVT in elderly patients with femoral intertrochanteric fracture after PFNA, which is of vital importance in the early diagnosis of DVT and early prevention of pulmonary embolism and other serious complications.
Humans
;
Male
;
Female
;
Venous Thrombosis/diagnosis*
;
Aged, 80 and over
;
Aged
;
Fibrinolysis
;
Retrospective Studies
;
Blood Coagulation
;
Hip Fractures/blood*
;
Fracture Fixation, Intramedullary/adverse effects*
;
Middle Aged
;
Postoperative Complications/blood*
;
Bone Nails/adverse effects*
8.Omics Analysis of Ferroptosis and Establishment of Prognostic Model for multiple myeloma Patients.
Zi-Ning WANG ; Hao-Ran CHEN ; Jun-Dong ZHANG ; Xue-Chun LU
Journal of Experimental Hematology 2023;31(2):411-419
OBJECTIVE:
To explore the role of ferroptosis-related genes in multiple myeloma(MM) through TCGA database and FerrDb, and build a prognostic model of ferroptosis-related genes for MM patients.
METHODS:
Using the TCGA database containing clinical information and gene expression profile data of 764 patients with MM and the FerrDb database including ferroptosis-related genes, the differentially expressed ferroptosis-related genes were screened by wilcox.test function. The prognostic model of ferroptosis-related genes was established by Lasso regression, and the Kaplan-Meier survival curve was drawn. Then COX regression analysis was used to screen independent prognostic factors. Finally, the differential genes between high-risk and low-risk patients were screened, and enrichment analysis was used to explore the mechanism of the relationship between ferroptosis and prognosis in MM.
RESULTS:
36 differential genes related to ferroptosis were screened out from bone marrow samples of 764 MM patients and 4 normal people, including 12 up-regulated genes and 24 down-regulated genes. Six prognosis-related genes (GCLM, GLS2, SLC7A11, AIFM2, ACO1, G6PD) were screened out by Lasso regression and the prognostic model with ferroptosis-related genes of MM was established. Kaplan-Meier survival curve analysis showed that the survival rate between high risk group and low risk group was significantly different(P<0.01). Univariate COX regression analysis showed that age, sex, ISS stage and risk score were significantly correlated with overall survival of MM patients(P<0.05), while multivariate COX regression analysis showed that age, ISS stage and risk score were independent prognostic indicators for MM patients (P<0.05). GO and KEGG enrichment analysis showed that the ferroptosis-related genes was mainly related to neutrophil degranulation and migration, cytokine activity and regulation, cell component, antigen processing and presentation, complement and coagulation cascades, haematopoietic cell lineage and so on, which may affect the prognosis of patients.
CONCLUSION
Ferroptosis-related genes change significantly during the pathogenesis of MM. The prognostic model of ferroptosis-related genes can be used to predict the survival of MM patients, but the mechanism of the potential function of ferroptosis-related genes needs to be confirmed by further clinical studies.
Humans
;
Multiple Myeloma
;
Ferroptosis
;
Prognosis
;
Hematopoietic System
;
Blood Coagulation
9.Stable Expression of Coagulation Factors by RPS6 Promoter.
Wen-Hui ZHANG ; Wen-Tian WANG ; Ying CHI ; Hui-Yuan LI ; Feng XUE ; Ren-Chi YANG ; Lei ZHANG
Journal of Experimental Hematology 2023;31(2):489-494
OBJECTIVE:
To screen better promoters and provide more powerful tools for basic research and gene therapy of hemophilia.
METHODS:
Bioinformatics methods were used to analyze the promoters expressing housekeeping genes with high abundance, so as to select potential candidate promoters. The GFP reporter gene vector was constructed, and the packaging efficiency of the novel promoter was investigated with EF1 α promoter as control, and the transcription and activities of the reporter gene were investigated too. The activity of the candidate promoter was investigated by loading F9 gene.
RESULTS:
The most potential RPS6 promoter was obtained by screening. There was no difference in lentiviral packaging between EF1 α-LV and RPS6-LV, and their virus titer were consistent. In 293T cells, the transduction efficiency and mean fluorescence intensity of RPS6pro-LV and EF1 αpro-LV were proportional to the lentiviral dose. The transfection efficiency of both promoters in different types of cells was in the following order: 293T>HEL>MSC; Compared with EF1 αpro-LV, RPS6pro-LV could obtain a higher fluorescence intensity in MSC cells, and RPS6pro-LV was more stable in long-term cultured HEL cells infected with two lentiviruses respectively. The results of RT-qPCR, Western blot and FIX activity (FIX∶C) detection of K562 cell culture supernatant showed that FIX expression in the EF1 α-F9 and RPS6-F9 groups was higher than that in the unloaded control group, and there was no significant difference in FIX expression between the EF1 α-F9 and RPS6-F9 groups.
CONCLUSION
After screening and optimization, a promoter was obtained, which can be widely used for exogenous gene expression. The high stability and viability of the promoter were confirmed by long-term culture and active gene expression, which providing a powerful tool for basic research and clinical gene therapy of hemophilia.
Humans
;
Transduction, Genetic
;
Genetic Vectors
;
Hemophilia A/genetics*
;
Transfection
;
Blood Coagulation Factors/genetics*
;
Lentivirus/genetics*
10.Research Progress of Carboxymethyl Chitosan-Based Haemostatic Materials and Their Haemostatic Mechanism --Review.
Kang REN ; Li-Hao WU ; Ling XU
Journal of Experimental Hematology 2023;31(3):911-915
Effective haemostatic materials can quickly control bleeding and achieve the purpose of saving patients' lives. In recent years, chitosan-based haemostatic materials have shown good haemostatic effects, but their application is limited because chitosan is almost insoluble in water. Carboxymethyl chitosan-based haemostatic materials can promote hemostasis by activating red blood cells and aggregating platelets. In addition, carboxymethyl chitosan can bind with Ca2+ to activate platelets and coagulation factors, and start endogenous coagulation pathways, which can adsorb fibrinogen in plasma to promote haemostasis. In this paper, the latest research progress of carboxymethyl chitosan-based haemostatic materials and their haemostatic mechanism were reviewed, in order to further strengthen the understanding of the haemostatic mechanism of carboxymethyl chitosan-based haemostatic materials, and provide new idea for the research and clinical application of carboxymethyl chitosan-based haemostatic materials.
Humans
;
Hemostatics
;
Chitosan/pharmacology*
;
Hemostasis
;
Blood Coagulation/physiology*
;
Hemorrhage

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