This study was performed to explore the effects of berberine(BBR)and berbamine(BA)on the apoptosis and activity of eosinophils,and to provide new ideas for the treatment of eosinophil-related diseases.Anticoagulated whole blood was taken from hospitalized patients,and eosinophils were purified by magnetic bead sorting technology,and the cell purification rate was compared by using flow cytometry.The purified eosinophils were cultured and stimulated with different concentrations of BBR and BA,and the apoptosis of eosinophils was observed using immunofluorescence microscopy.Flow cytometry was used to detect the apoptosis rate,reactive oxygen species(ROS)release,mitochondrial membrane potential,and CD11b,CD62L and CD63 molecular expression of eosinophils.Data showed that 10 μmol/L BBR displayed significant anti-apoptosis effect on eosinophils at 18 h,24 h,48 h,however,100 μmol/L and 150 μmol/L BBR displayed significant apoptosis-promoting effects on eosinophils at 24 h,48 h,especially in the early stage.BA at 5 μmol/L,15 μmol/L and 25 μmol/L showed significant apoptosis-promoting effects on eosinophils at 24 h,48 h,especially in the late stage.In eosinophils,BA stimulated the production of ROS and the decrease of mitochondrial membrane potential in a concentration-dependent manner,reaching the maximum effect at 25 μmol/L,while BBR stimulation did not change mitochondria and ROS.Pretreatment with 25 μmol/L BA significantly inhibited the increase of CD11b expression and the decrease of CD62L expression in eosinophils after eotaxin-2 stimulation.In conclusion,berberine has a bidirectional regulatory effect on the quantity of eosinophils,while berbamine promotes eosinophil apoptosis and inhibits eosinophil activation.Both compounds hold significant potential for regulating the progression of eosinophil-associated diseases,and their regulatory mechanisms need further investigation.

Objective:The aim of this study is to establish the reference interval of refined immune cell subsets by multi-parameter flow cytometry.Methods:In this cross sectional study, a total of 326 healthy participants were included and divided into two groups based on age: 18-40 years old group and 41-60 years old group. Peripheral venous blood was collected in a fasting status. Flow cytometry tests were performed according to previous consensus article. The analysis of reference interval was conducted according to the documents of Clinical and Laboratory Standards Institute (CLSI) EP28-A3c and Health Industry Standards of the People′s Republic of China WS/T 402-2024.Results:The T,B,NK,DC and monocyte refined immune cell subsets applicable to the reference range of the general population mainly include: CD3 +(56.4%-83.3%),CD4 +TEMRRA (0.2%-11.6%), CD4 +TEM (14.9%-52.8%), CD4 +CD28 +(76.3%-99.9%), CD19 +CD5 +(9.7%-45.8%), CD19 +CD27 -(45.7%-90.0%), CD19 +CD27 +(9.8%-54.0%), CD3 +CD16 +CD56 +(1.3%-20.2%), CD3 -CD19 -CD20 -CD14 -CD56 -HLA-DR +(0.4%-2.0%), Monocyte Mo1 subset CD14 +CD16 -(46.3%-94.6%), monocyte Mo2 subset CD14 +CD16 +(2.8%-49.7%), etc. When the Z-value between different age groups was higher than Z* (3.50 cut-off value), the reference intervals of these subsets should be established independently according to age. Conclusions:In this study, the reference intervals of refined subsets of immune cells by multi-parameter flow cytometry has been preliminarily established. For those subgroups that meet the grouping criteria, age should be fully considered in clinical applications and laboratory validation.

Objective:The aim of this study is to establish the reference interval of refined immune cell subsets by multi-parameter flow cytometry.Methods:In this cross sectional study, a total of 326 healthy participants were included and divided into two groups based on age: 18-40 years old group and 41-60 years old group. Peripheral venous blood was collected in a fasting status. Flow cytometry tests were performed according to previous consensus article. The analysis of reference interval was conducted according to the documents of Clinical and Laboratory Standards Institute (CLSI) EP28-A3c and Health Industry Standards of the People′s Republic of China WS/T 402-2024.Results:The T,B,NK,DC and monocyte refined immune cell subsets applicable to the reference range of the general population mainly include: CD3 +(56.4%-83.3%),CD4 +TEMRRA (0.2%-11.6%), CD4 +TEM (14.9%-52.8%), CD4 +CD28 +(76.3%-99.9%), CD19 +CD5 +(9.7%-45.8%), CD19 +CD27 -(45.7%-90.0%), CD19 +CD27 +(9.8%-54.0%), CD3 +CD16 +CD56 +(1.3%-20.2%), CD3 -CD19 -CD20 -CD14 -CD56 -HLA-DR +(0.4%-2.0%), Monocyte Mo1 subset CD14 +CD16 -(46.3%-94.6%), monocyte Mo2 subset CD14 +CD16 +(2.8%-49.7%), etc. When the Z-value between different age groups was higher than Z* (3.50 cut-off value), the reference intervals of these subsets should be established independently according to age. Conclusions:In this study, the reference intervals of refined subsets of immune cells by multi-parameter flow cytometry has been preliminarily established. For those subgroups that meet the grouping criteria, age should be fully considered in clinical applications and laboratory validation.

Morphological examination of blood cells is an important re-examination method of blood cell analysis, and it is also the basis of diagnosis of hematological diseases with cytopathic changes. Artificial intelligence assisted blood cell morphological examinationcan effectively make up for the shortcomings of artificial microscope examination methods, greatly improve the working efficiency of cell morphological examination, solve the problems of manpower shortage and labor intensity to a great extent, obviously improve the repeatability of examination results, facilitate the review of the examination results, and realize remote blood cell morphological examination and diagnosis online. However, at present, the main method of blood cell morphological examination in China is still manual microscope examination. In order to promote and expand the clinical application of artificial intelligence-assisted blood cell morphological examination, the R&D manufacturers and clinical laboratory experts of automatic blood cell morphological analyzer should work together to promote the standardization of automatic blood cell morphological analysis, strengthen its performance evaluation and verification, continuously improve its analytical performance, expand its clinical application scope, and promote the construction of blood cell morphological database in China.

Hypertension is a common cardiovascular disease. Chinese guidelines for the management of hypertension, the global practice guidelines for hypertension of the International Hypertension Society (ISH) and the guidelines for the treatment of adult hypertension drugs of the World Health Organization have been issued successively, which play an important role in guiding the clinical medication of hypertension. Calcium channel blockers (CCB), angiotensin converting enzyme inhibitors (ACEI), angiotensin receptor blockers (ARBs), angiotensin receptor neprilysin inhibitor (ARNI), thiazide diuretics and β-receptor blockers are commonly used in clinical antihypertensive drugs. The goal of hypertension drug control, the application timing of hypertension drugs, the selection of combined medication scheme, the drug selection of hypertension complicated with other diseases, and the medication of gestational hypertension are all problems that clinicians need to master.

Chimeric antigen receptor (CAR)-T cell immunotherapy is one of the most remarkable achievements in the field of cancer therapy for the past few years. Flow cytometry (FCM) plays an important role in the design and construction of CAR-T cells, patient enrollment, performance test of CAR-T products, evaluation of post-treatment efficacy and immune function, exploration of relapse mechanism, and selection of subsequent treatment. In order to further promote and standardize the application of FCM in laboratory testing related to CAR-T cell immunotherapy, the special issue on "Application and Research Progress of flow cytometry in CAR-T cell immunotherapy" were organized by The Chinese Journal of Laboratory Medicine. A number of articles related to this topic were published, which covered expert consensus, continuing education, expert review, detection of minimal residual disease, immune function, and cytokine detection. We intend to promote the standardization of FCM in CAR-T cell immunotherapy and provide greater assistance for clinical application.

Flow cytometry (FCM) plays an important role in clinical diagnosis and immune function evaluation. In recent years, with the progress of instruments, antibody, immunity, diagnosis and treatment technology, the clinical application of FCM is more and more extensive. Aiming to promote the standardization and further development of FCM,combined with several reports in the topic "Application of flow cytometry in the diagnosis and treatment of tumors of hematopoietic and lymphoid tissues", the paper reviews and comments in the application of FCM in acute leukemia immunophenotyping, detection of minimal residual disease, diagnosis and follow-up of lymphoma, detection of complications after transplantation, immune function and immune reconstruction after transplantation, quality control, and the prospect of FCM.

Objective:To investigate the feasibility of application of non-fasting dyslipidemia cutoff values in community population.Methods:Self-control study was used. 839 physical examinees (292 males and 547 females) were recruited in clinical laboratory of Guang′an men Hospital from January to October 2018. The median (interquartile range) of age was 60 (54, 66) years. Blood samples were collected before and at 4 h after a standard breakfast. Comparison of fasting and postprandial lipoprotein levels was performed using Paired-Samples T Test or Two-Related-Samples Wilcoxon. The changes of 4-hour postprandial blood lipid levels and the percentages of postprandial dyslipidemia according to different stratification of fasting dyslipidemia were performed using one-way ANOVA and χ 2 test, respectively. Results:Compared with fasting, 4-hour postprandial total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C), non-high density lipoprotein cholesterol (non-HDL-C), apolipoprotein A1 (ApoA1) and apolipoprotein B (ApoB) decreased slightly, postprandial triglyceride (TG) increased by 0.72 mmol/L, and postprandial remnant-like lipoprotein cholesterol (RLP-C) increased by 0.27 mmol/L ( t or Z values = 10.26,22.94,24.22,4.71,16.61,26.92,-23.58,-19.35, P<0.05, respectively). According to the non-fasting dyslipidemia cut-off values recommended by the European consensus, there were 10%, 16.6%, 10.1%, 12.3%, 30% and 34.9% of the population in the appropriate levels of fasting TC, LDL-C, HDL-C, non-HDL-C, TG and RLP-C distributed in elevated levels of postprandial, respectively. The changes of 4-hour postprandial TC, LDL-C, non-HDL-C and HDL-C increased with the elevation of fasting level ( F=9.50,6.18,8.07,3.86, P<0.01), and the maximum changes of TC≤3.5%, LDL-C≤6.8%, non-HDL-C≤2.9%, HDL-C≤6.3%; the change of 4-hour postprandial TG increased slightly first and then decreased significantly (51.3% vs. 57.9% vs. 39.2%, F=19.05, P<0.01); the change of 4-hour postprandial RLP-C decreased (50.8% vs. 33.2%, F=10.40, P<0.01). The cut-off values of 4-hour postprandial dyslipidemia were TC ≥5.1 mmol/L, LDL-C ≥3.2 mmol/L, HDL-C ≤0.9 mmol/L, non-HDL-C ≥4.0 mmol/L and RLP-C ≥1.0 mmol/L. The cut-off values of borderline elevated and elevated TG levels were ≥2.2 mmol/L and ≥3.4 mmol/L, respectively. Conclusions:The cut-off values of postprandial dyslipidemia including TC, LDL-C, HDL-C, non-HDL-C and RLP-C were preliminarily established in community population, which could be applied to the routine lipid profile evaluation in the physical examination population. And it might be needed that postprandial TG was managed hierarchically according to different cut-off values.

Objective:To investigate the feasibility of application of non-fasting dyslipidemia cutoff values in community population.Methods:Self-control study was used. 839 physical examinees (292 males and 547 females) were recruited in clinical laboratory of Guang′an men Hospital from January to October 2018. The median (interquartile range) of age was 60 (54, 66) years. Blood samples were collected before and at 4 h after a standard breakfast. Comparison of fasting and postprandial lipoprotein levels was performed using Paired-Samples T Test or Two-Related-Samples Wilcoxon. The changes of 4-hour postprandial blood lipid levels and the percentages of postprandial dyslipidemia according to different stratification of fasting dyslipidemia were performed using one-way ANOVA and χ 2 test, respectively. Results:Compared with fasting, 4-hour postprandial total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C), non-high density lipoprotein cholesterol (non-HDL-C), apolipoprotein A1 (ApoA1) and apolipoprotein B (ApoB) decreased slightly, postprandial triglyceride (TG) increased by 0.72 mmol/L, and postprandial remnant-like lipoprotein cholesterol (RLP-C) increased by 0.27 mmol/L ( t or Z values = 10.26,22.94,24.22,4.71,16.61,26.92,-23.58,-19.35, P<0.05, respectively). According to the non-fasting dyslipidemia cut-off values recommended by the European consensus, there were 10%, 16.6%, 10.1%, 12.3%, 30% and 34.9% of the population in the appropriate levels of fasting TC, LDL-C, HDL-C, non-HDL-C, TG and RLP-C distributed in elevated levels of postprandial, respectively. The changes of 4-hour postprandial TC, LDL-C, non-HDL-C and HDL-C increased with the elevation of fasting level ( F=9.50,6.18,8.07,3.86, P<0.01), and the maximum changes of TC≤3.5%, LDL-C≤6.8%, non-HDL-C≤2.9%, HDL-C≤6.3%; the change of 4-hour postprandial TG increased slightly first and then decreased significantly (51.3% vs. 57.9% vs. 39.2%, F=19.05, P<0.01); the change of 4-hour postprandial RLP-C decreased (50.8% vs. 33.2%, F=10.40, P<0.01). The cut-off values of 4-hour postprandial dyslipidemia were TC ≥5.1 mmol/L, LDL-C ≥3.2 mmol/L, HDL-C ≤0.9 mmol/L, non-HDL-C ≥4.0 mmol/L and RLP-C ≥1.0 mmol/L. The cut-off values of borderline elevated and elevated TG levels were ≥2.2 mmol/L and ≥3.4 mmol/L, respectively. Conclusions:The cut-off values of postprandial dyslipidemia including TC, LDL-C, HDL-C, non-HDL-C and RLP-C were preliminarily established in community population, which could be applied to the routine lipid profile evaluation in the physical examination population. And it might be needed that postprandial TG was managed hierarchically according to different cut-off values.

Objective:To establish the reference interval of serum triglyceride (TG) for 4 hours after meal in healthy middle and old people of Beijing community, and to provide the diagnostic basis for the judgment of dyslipidemia after meal.Methods:Selected 369 elderly people from January to October 2018 in the health examination of Guang′anmen Hospital of the Chinese Academy of Traditional Chinese Medicine. The subjects collected fasting venous blood samples in the morning the next day after fasting for 12 hours, then ate a standard breakfast that conformed to the local dietary habits, and collected venous blood samples again 4 hours after eating. Serum TG levels were measured 4 h after meal using AU5822 fully automatic biochemical analyzer and matching reagents. The comparison of postprandial TG between different age and sex groups was statistically significant using the nonparametric test of two independent samples, and the comparison between postprandial and fasting TG using the nonparametric test of two paired samples with P<0.05 as the difference. The 95% confidence interval was calculated using a nonparametric method according to the relevant requirements of the CLSI EP28-A3c file, and the reference interval was expressed as P2.5, P97.5. Results:The median 4-hour post-prandial TG of the middle-aged and elderly aged 45-59 years and those aged ≥ 60 years at health checkups were 1.65 (1.25, 2.13) mmol/L and 1.58 (1.25, 2.00) mmol/L, there was no significant difference between the two groups ( Z=-1.040, P>0.05). There was no statistical difference between males 1.69 (1.22, 2.31) mmol/L and females 1.63 (1.26, 2.12) mmol/L at 4 hours postprandial TG levels in the 45-59 year-old group ( Z=-0.179, P>0.05),there was also no statistical difference between 1.64 (1.22, 2.06) mmol/L for men and 1.53 (1.28, 1.99) mmol/L for women aged 60 years or older ( Z=-0.256, P>0.05).Compared with the median fasting TG of 1.05 (0.87, 1.29) mmol/L, the median serum TG of 1.61 (1.25, 2.09) mmol/L at 4 hours after meal was significantly increased ( Z=-16.449, P<0.01). The difference between postprandial and fasting was 0.52 (0.30, 0.85) mmol/L.The reference range of serum TG at 4 hours after meal was 0.82 to 3.02 mmol/L. Conclusion:In this study, the reference range of serum triglycerides for 4 hours after meal was established in some healthy elderly population groups in Beijing.