Clinical and gene mutation characteristics of patients with hereditary ellipsocytosis: nine cases report and literature review / 中华血液学杂志

Objective: To report gene mutations in nine patients with hereditary elliptocytosis (HE) and analyze the characteristics of pathogenic gene mutations in HE. Methods: The clinical and gene mutations of nine patients clinically diagnosed with HE at Institute of Hematology & Blood Diseases Hospital from June 2018 to February 2022 were reported and verified by next-generation sequencing to analyze the relationship between gene mutations and clinical phenotypes. Results: Erythrocyte membrane protein gene mutations were detected among nine patients with HE, including six with SPTA1 mutation, one with SPTB mutation, one with EPB41 mutation, and one with chromosome 20 copy deletion. A total of 11 gene mutation sites were involved, including 6 known mutations and 5 novel mutations. The five novel mutations included SPTA1: c.1247A>C (p. K416T) in exon 9, c.1891delG (p. A631fs*17) in exon 15, E6-E12 Del; SPTB: c.154C>T (p. R52W) ; and EPB41: c.1636A>G (p. I546V) . Three of the six patients with the SPTA1 mutation were SPTA1 exon 9 mutation. Conclusion: SPTA1 is the most common mutant gene in patients with HE.

Thirty-day outcomes of in-hospital multi-vessel versus culprit-only revascularization strategy for ST-segment elevation myocardial infarction with multivessel coronary disease / 老年心脏病学杂志（英文版）

BACKGROUND@#Many studies have demonstrated the benefit of complete multivessel revascularization versus culprit-only intervention in patients of ST-segment elevation myocardial infarction (STEMI) and multivessel coronary artery disease. However, only a few single-center retrospective studies were performed on small Chinese cohorts. Our study aims to demonstrate the advantage of multivessel percutaneous intervention (PCI) strategy on 30-day in-hospital outcomes to patients with STEMI and multivessel disease in larger Chinese population.@*METHODS@#From the Improving Care for Cardiovascular Disease in China-Acute Coronary Syndrome (CCC-ACS) project, 5935 patients with STEMI and multivessel disease undergoing PCI and hospitalized for fewer than 30 days were analyzed. After 5: 1 propensity score matching, 3577 patients with culprit-only PCI and 877 with in-hospital multivessel PCI were included. The primary outcome was major adverse cardiovascular and cerebrovascular event (MACCE), defined as a composite of myocardial infarction, all-cause death, stent thrombosis, heart failure, and stroke.@*RESULTS@#Multivariable logistic regression analysis revealed that in-hospital multivessel PCI was associated with lower risk of 30-day MACCE (adjusted OR = 0.75, 95% CI: 0.57-0.98, P = 0.032) than culprit-only PCI and conferred no increased risk of all-cause death, myocardial infarction, stent thrombosis, stroke, or bleeding. Subgroup analysis showed that MACCE reduction was observed more often from patients with trans-femoral access (OR = 0.34, 95% CI: 0.15-0.74) than with trans-radial access (OR = 0.87, 95% CI: 0.66-1.16, P for interaction = 0.017).@*CONCLUSIONS@#The in-hospital multivessel PCI strategy was associated with a lower risk of 30-day MACCE than culprit-only PCI in patients with STEMI and multivessel coronary artery disease.

Related factors of endogenous erythropoietin and its association with 10-year risks of cardiovascular disease in a community-based Chinese study / 北京大学学报(医学版)

OBJECTIVE@#To investigate the associated factors of endogenous erythropoietin (EPO) and its association with 10-year risks of atherosclerotic cardiovascular disease in a Chinese community-based general population.@*METHODS@#The participants of this study were from an atherosclerosis cohort survey which was established by the Department of Cardiology, Peking University First Hospital in 2011. The cohort survey was performed in the Gucheng and Pingguoyuan communities of Shijingshan district in Beijing, China. The inclusion criteria of this study were: (1) endogenous EPO was measured; (2) health questionnaire data and other clinical data were complete; (3) participatants who had cardiovascular or cerebrovascular diseases (defined as self-reported coronary heart disease, stroke or transient ischemic attack) or anemia or estimated glomerular filtration rate (eGFR) < 60 mL/(min·1.73 m2) at baseline were excluded. Multivariate linear regression model was used to examine the associated factors of endogenous EPO. The participants were grouped into low (< 5%), moderate (5%-10%) and high risk (≥10%) groups, based on predicted 10-year cardiovascular disease risk using the prediction for atherosclerotic cardiovascular disease risk in China (China-PAR) equations.@*RESULTS@#A total of 4 013 participants were included. Mean age of them was (55.9±8.2) years, 62.2% (n=2 496) of them were female, and 46.3% (n=1 859), 70.9% (n=2 845), 21.9% (n=879) had hypertension, dyslipidemia and diabetes, individually. The average body mass index was (26.1±3.3) kg/m2. The median of EPO level was 12.8 (9.3-17.4) IU/L and 25.1% (n=998) were at high 10-years risk of cardiovascular disease. Hemoglobin (β=-0.05, 95%CI: -0.07 to -0.04) and eGFR ≥90 mL/(min·1.73 m2) (β=-0.05, 95%CI: -0.07 to -0.04) were associated with lower in transformed EPO levels while hypertension (β=0.08, 95%CI: 0.05 to 0.12) and obesity (β=0.14, 95%CI: 0.09 to 0.18) were associated with higher in transformed EPO levels in multivariate linear regression analyses. Ten-year cardiovascular disease risks were positively associated with in transformed EPO levels (β=0.07, 95%CI: 0.05 to 0.09). The participants at moderate and high cardiovascular disease risks had significant higher EPO levels than the low risk group (all P < 0.05).@*CONCLUSION@#In community-based Beijing populations, endogenous EPO was associated with hemoglobin, renal function, obesity and hypertension. Individuals at high 10-years cardiovascular disease risks have higher endogenous EPO levels. Endogenous EPO may be a potential risk marker of cardiovascular disease.

Application of the new left ventricular circulation assist device iVAC 2L in high-risk percutaneous coronary intervention / 中国介入心脏病学杂志

Objective To evaluate the efficacy and safety of the new left ventricular circulation assist device iVAC 2L in high-risk percutaneous coronaryintervention(HR-PCI)in Chinese patients.Methods We reported 6 PCIs in 5 patients supported by iVAC 2L,a new left ventricular circulation assist device,performed in Macao from September 2022 to March 2023.All patients were assessed by heart team and categorize to be high-risk for procedure.Clinical and intra-procedural data were analyzed.iVAC 2L-related complications and 30-day results were also documented.Results Insertion and removement of iVAC 2L successfully performed in all the 5 patients.Three of them underwent complete revascularization in the index procedure;one failed for the first time due to intolerance of the prolonged procedure,but succeeded for the reattempt of complete revascularization a month later,with the support of iVAC 2L.PCI was abandoned due to poor vessel condition.iVAC 2L,the new left ventricular circulation assist device,supported effectively during the 6 procedures.The patients were stable during the procedure.The success rate of hemodynamic support was 100％.No iVAC 2L-related complications and 30-day major adverse cardiac and cerebral events occurred,the 30-day survival was 100％.Conclusions Initial experience suggested that the new left ventricular circulation assist device iVAC 2L could provide effective and safe support in high-risk PCI.

Characteristics of bone marrow compensatory erythropoiesis in hereditary spherocytosis / 中华血液学杂志

Objective: To reveal the compensatory features of bone marrow (BM) erythropoiesis in hereditary spherocytosis (HS) and to explore the effect of diferent hemoglobin levels on this compensation. Methods: Clinical and laboratory data of patients with HS were collected, and the peripheral blood absolute reticulocytes counts value was taken as the surrogate parameter to evaluate the ability of erythropoiesis compensation. BM erythropoiesis compensation in HS with diferent degrees of anemia were evaluated. Results: ①Three hundred and two patients were enrolled, including 115 with compensated hemolytic disease, 74 with mild anemia, 90 with moderate anemia, and 23 with severe anemia. ②Hemoglobin (HGB) was negatively correlated with serum erythropoietin in the decompensated hemolytic anemia group (EPO; rs=-0.585, P<0.001) . ③The median absolute reticulocyte count (ARC) of HS patients was 0.34 (0.27, 0.44) ×10(12)/L, up to 4.25 times that of normal people. The maximum ARC was 0.81×10(12)/L, about 10 times that of normal people. The median ARC of patients with compensated hemolytic disease was 0.29 (0.22, 0.38) ×10(12)/L, up to 3.63 times that of normal people. The median ARC of patients with hemolytic anemia was 0.38 (0.30, 0.46) ×10(12)/L, which was significantly higher than the patients with compensated hemolytic disease, up to 4.75 times that of normal people (z=4.999, P=0.003) . ④ ARC was negatively correlated with HGB in the compensated hemolytic disease group (rs=-0.177, P=0.002) and positively correlated with HGB in the decompensated hemolytic anemia group (rs=0.191, P=0.009) . There was no significant difference in the ARC among patients with mild, moderate, and severe anemia (χ(2)=4.588, P=0.101) . ⑤The median immature reticulocyte production index of the mild, moderate, and severe anemia groups was 13.1% (9.1%, 18.4%) , 17.0% (13.4%, 20.8%) , and 17.8% (14.6%, 21.8%) , respectively; the mild anemia group had lower index values than the moderate and severe anemia groups (P(adj) values were both<0.05) , but there was no significant difference between the latter groups (P(adj)=1.000) . The median immature reticulocyte count of patients in the mild, moderate, and severe groups was 5.09 (2.60, 7.74) ×10(10)/L, 6.24 (4.34, 8.83) ×10(10)/L, and 7.00 (3.07, 8.22) ×10(10)/L, respectively; there was no significant difference among the groups (χ(2)=3.081, P=0.214) . Conclusion: HGB can be maintained at a normal level through bone marrow erythropoiesis, while red blood cells are reduced in HS. However, once anemia develops, the bone marrow exerts its maximum erythropoiesis capacity and does not increase, regardless of anemia aggravation or serum EPO increase.

Reassessing the six months prognosis of patients with severe or very severe aplastic anemia without hematological responses at three months after immunosuppressive therapy / 中华血液学杂志

Objective: To reassess the predictors for response at 6 months in patients with severe or very severe aplastic anemia (SAA/VSAA) who failed to respond to immunosuppressive therapy (IST) at 3 months. Methods: We retrospectively analyzed the clinical data of 173 patients with SAA/VSAA from 2017 to 2018 who received IST and were classified as nonresponders at 3 months. Univariate and multivariate logistic regression analysis were used to evaluate factors that could predict the response at 6 months. Results: Univariate analysis showed that the 3-month hemoglobin (HGB) level (P=0.017) , platelet (PLT) level (P=0.005) , absolute reticulocyte count (ARC) (P<0.001) , trough cyclosporine concentration (CsA-C0) (P=0.042) , soluble transferrin receptor (sTfR) level (P=0.003) , improved value of reticulocyte count (ARC(△)) (P<0.001) , and improved value of soluble transferrin receptor (sTfR(△)) level (P<0.001) were related to the 6-month response. The results of the multivariate analysis showed that the PLT level (P=0.020) and ARC(△) (P<0.001) were independent prognostic factors for response at 6 months. If the ARC(△) was less than 6.9×10(9)/L, the 6-month hematological response rate was low, regardless of the patient's PLT count. Survival analysis showed that both the 3-year overall survival (OS) [ (80.1±3.9) % vs (97.6±2.6) %, P=0.002] and 3-year event-free survival (EFS) [ (31.4±4.5) % vs (86.5±5.3) %, P<0.001] of the nonresponders at 6 months were significantly lower than those of the response group. Conclusion: Residual hematopoietic indicators at 3 months after IST are prognostic parameters. The improved value of the reticulocyte count could reflect whether the bone marrow hematopoiesis is recovering and the degree of recovery. A second treatment could be performed sooner for patients with a very low ARC(△).

Pharmacokinetic study of anti-human T-cell porcine immunoglobulin combined with cyclosporine A immunosuppressive therapy in patients with severe aplastic anemia / 中华血液学杂志

Objective: To study the metabolic characteristics of anti-human T-cell porcine immunoglobulin (p-ATG) in patients with severe aplastic anemia (SAA) . Methods: For patients with SAA treated with p-ATG combined cyclosporine A (CsA) immunosuppressants between February 2017 and December 2017, the p-ATG dose was 20 mg·kg(-1)·d(-1) over 12 h of intravenous administration for 5 consecutive days. The blood concentration of p-ATG was detected by the three-antibody sandwich ELISA method, the pharmacokinetic analysis software was fitted, and the second-chamber model method was used to calculate the pharmacokinetic parameters and plot the pharmacokinetic curve. Adverse events were recorded and the hematologic reactions were determined at 6 months after treatment. Results: Sixteen patients with SAA treated with p-ATG were enrolled, including 8 females and 8 males, with a median age of 22 years (range, 12 to 49 years) and a median weight of 62.5 kg (range, 37.5 to 82.0 kg) . The pharmacokinetics of p-ATG could be evaluated in 14 cases. p-ATG is distributed in vivo as a two-chamber model, with an average drug concentration peak (T(max)) of (5.786±2.486) days, a peak concentration (C(max)) of (616±452) mg/L, and a half-life of (10.479±8.242) days. The area under the drug time curve (AUC) was (5.807±3.236) mg/L·d. Six months after treatment, 8 of 14 patients received a hematologic response; the AUC (0-t) of the effective group and ineffective groups was (7.50±3.26) mg/L·d vs (4.50±2.18) mg/L·d, and the C(max) was (627±476) mg/L vs (584±382) mg/L, respectively. Conclusion: The plasma concentration of p-ATG reached a peak after 5 days of continuous infusion, and then decreased slowly, with a half-life of 10.479 days, and the residual drug concentration was detected in the body 60 days after administration. A relationship between drug metabolism and efficacy and adverse reactions could not be determined.

Regulatory effect of Flos Abelmoschus manihot in mice with inflammatory bowel disease based on gut microbiota sequencing and untargeted lipidomics / 药学学报

In this study, the ameliorative effects of Flos Abelmoschus manihot on mice with chronic inflammatory bowel disease (IBD) were investigated and its effects on the structure of the intestinal flora as well as the lipid profile in feces of IBD mice were analyzed. All animal welfare and experimental procedures followed the regulations of the Animal Ethics Committee of Nanjing University of Chinese medicine. A mouse model with chronic IBD induced by dextran sulfate sodium (DSS) was used to evaluate changes in body weight, disease activity index (DAI), colonic histopathological damage as well as gene expression levels of inflammatory factors in the colon. Fecal samples from mice in each group were collected and subjected to Illumina high-throughput sequencing to detect the abundance of intestinal flora; samples were analyzed by UHPLC-Q-Exactive® HF Quadrupole-Orbitrap® of untargeted lipidomics, which detects lipid content in feces. Administration of Flos Abelmoschus manihot could significantly restore the body weight and ameliorate colonic histopathological damage in IBD mice. Sequencing of the gut microbiota revealed that the species diversity and richness of the gut microbiota in IBD mice were decreased, with a significant increase in the abundance of Verrucomicrobia and a significant decrease in the abundance of Bacteroidetes; Flos Abelmoschus manihot significantly increased the richness and diversity of intestinal microbiota in IBD mice, increased the number of taxa species at each level, and restored the abundance of bacteria in the phylum Bacteroidetes. Analysis of fecal lipid profiles identified the most significant changes in sphingolipid and glycerophospholipid metabolic pathways in IBD mice, with Flos Abelmoschus manihot inhibiting ceramide and sphingomyelin synthesis in sphingolipid metabolism. In summary, Flos Abelmoschus manihot can effectively improve the disease condition of mice with chronic IBD, and it has the effect of regulating intestinal flora homeostasis and lipid metabolism, but the related mechanism between the two still needs to be deeply explored.

Compatibility of Salviae Miltiorrhizae Radix et Rhizoma and Carthami Flos regulate insulin signaling pathway and alleviate insulin resistance in mice / 药学学报

Insulin resistance refers to the impaired ability of insulin to regulate glucose metabolism in peripheral organs, which is considered to be the etiology of type 2 diabetes. This study aims to explore the mechanism of improving insulin resistance by compatibility of Salviae Miltiorrhizae Radix et Rhizoma and Carthami Flos (DH). Insulin resistance was conducted on C56BL/6J mice by treatment of high fat diet. The energy intake and body weight, plasma levels of triglycerides, total cholesterol, insulin and glucose, oral glucose tolerance test (OGTT) and insulin tolerance test (ITT), as well as gene transcription and protein expression levels of insulin signaling pathway in liver, heart, kidney, and skeletal muscle of insulin resistance mice were evaluated. Animal experiments and welfare were performed in compliance with the guidelines of Animal Ethics Committee of Nanjing University of Chinese Medicine. The results showed that DH treatment significantly alleviated the excessive food intake and weight gain, and significantly decreased the levels of plasma triglycerides and total cholesterol, and constantly mitigated the hyperinsulinemia in insulin resistance mice. The results of OGTT and ITT suggested that DH treatment dramatically improved the response of insulin resistance mice to insulin stimulated glucose metabolism. Furthermore, the imbalance of metabolic arm and mitogenic arm of insulin signaling pathway in insulin resistance mice was normalized after DH treatment. DH treatment regulated insulin signaling pathway and improved the ability of glucose metabolism of insulin resistance mice.

Strategy to delay the progression of chronic kidney disease by targeting gut microbiota and uremic toxins metabolism pathway / 药学学报

Chronic kidney disease (CKD) is a serious chronic disease with high incidence, poor prognosis, and a variety of complications. Indoxyl-sulfate (IS) and p-cresol sulfate (PCS) are two typical gut-derived uremic toxins, which are produced by the co-metabolism of intestinal microbes and the host. With the progression of CKD, gut-derived uremic toxins such as IS and PCS accumulate in patients with CKD and thereafter accelerate the progression of CKD. Gut microbiota is closely related with CKD, and targeting gut microbiota to regulate gut-derived uremic toxins synthesis and metabolic pathways may be a promising strategy to delay the progression of CKD. In this paper, the relationship between gut microbiota, gut-derived uremic toxins, and CKD was analyzed, and the strategy to delay the progression of CKD by targeting gut microbiota and uremic toxins metabolism pathway was proposed.

Relationship between Changes of Lymphocyte Subsets and Early Hematologic Response in Immunosuppressive Therapy of Severe Aplastic Anemia Patients / 中国实验血液学杂志

OBJECTIVE@#To explore the relationship between the change of lymphocyte subsets before and after immunosuppressive therapy (IST) with disease severity of severe aplastic anemia (SAA) and hematologic response to IST.@*METHODS@#The clinical data of 94 patients with SAA/VSAA treated by r-ATG and CsA in our hospital from December 2009 to October 2011 was analyzed retrospectively. Among them, 26 patients who had sequential data of lymphocyte subsets and cytokines before and after treatment were enrolled. The relationship between lymphocyte subsets, cytokine level before IST and disease severity, as well as the relationship between changes if lymphocyte subsets, changes of cytokine and the HR after IST for 6 months was analyzed.@*RESULTS@#There were no statistical differences in the ratio and absolute count of lymphocyte, the ratio and absolute count of each lymphocyte subsets, including CD3@*CONCLUSION@#The hematopoietic recovery and early hematologic remission may be affected by the intensity of immune suppression reflected from the changes of lymphocyte subsets and the immune reconstruction reflected from the recovery of lymphocyte subsets. The immune reconstruction is most significant within 3 months after IST.

Analysis of the strategy to intervene the progress of inflammatory bowel disease by targeting intestinal bacterial respiration and energy metabolism / 药学学报

Gut microbiota dysbiosis is closely related to a variety of host diseases. Recently, targeting the metabolic pathways of gut microbiota for the prevention and treatment of host diseases has become a frontier strategy and research hotspot. Inflammatory bowel disease (IBD) is a group of chronic progressive intestinal inflammatory diseases of unknown etiology. The relationship between IBD and gut microbiota disorders and bacterial respiratory/energy metabolism has been confirmed in recent research. This article will introduce the relationship among them, and propose a new treatment strategy to alleviate host gut inflammation by regulating gut microbiota respiration and energy metabolism based on the latest research progress. In the progression of IBD, the gut microbiota homeostasis is disturbed. The main reasons include two aspects: on the one hand, when the intestinal inflammation of the host occurs, with increasing of oxygen concentration in the intestinal cavity, facultative anaerobic bacteria, especially Enterobacteriaceae bacteria would proliferate abnormally; while the growth of absolute anaerobic bacteria such as Firmicutes is inhibited. On the other hand, intestinal inflammation by-products also support the expansion of facultative anaerobic bacteria, which ultimately exacerbates the imbalance of gut microbiota. Dysregulated intestinal flora will further disturb intestinal immune homeostasis and exacerbate intestinal inflammation. The latest research proposed the possibility that IBD can be alleviated by interfering with the respiration of bacteria, inhibiting the abnormal proliferation of bacteria, or increasing the level of "beneficial" metabolites of gut microbiota. The above studies suggest that alleviating host intestinal inflammation can be explored by focusing on the metabolic pathways of gut microbiota and regulating the intestinal bacterial respiration and energy metabolism, which is of great significance for the clinical treatment of IBD and the research of innovative drugs.

Prognostic factors of cyclosporine A combined with androgen in the treatment of transfusion dependent non-severe aplastic anemia / 中华血液学杂志

Objective: To analyze the prognostic factors of transfusion-dependent non-severe aplastic anemia (TD-NSAA) patients treated with cyclosporine A (CsA) and androgen. Methods: Clinical data of 77 consecutive TD-NSAA patients treated with CsA and androgen were retrospectively analyzed between 2010 and 2013. We obtained clinical manifestations and baseline parameters of routine blood test from responders, and compared those with non-responders. All data were analyzed by univariate analysis and multivariate analysis. Results: In 77 patients, there were 43 (55.8%) patients achieved hematological response after 6 months'treatment, and 53 (68.8%) patients got response after 12 months. Univariate analysis showed that platelets baseline was the only factor related to hematological response [19 (6-61) ×10(9)/L vs 13.5 (5-45) ×10(9)/L, P=0.001] after 6 months therapy. After 12 months, the statistical differences were maintained, which were platelets baseline [18 (6-61) ×10(9)/L vs 10.5 (5-45) ×10(9)/L, P<0.001], absolute reticulocytes [0.03 (0.01-0.06) ×10(12)/L vs 0.029 (0.02-0.06) ×10(12)/L, P=0.043], transfusion-dependent of platelet (P=0.007) , transfusion-dependent of platelet and erythrocyte (P=0.012) . Multivariate analysis showed that platelets baseline could be an independent prognostic factor of hematological response (P=0.010 or 0.009) . Cutoff value of platelets by receiver operating characteristic curve was 15.5×10(9)/L. Conclusion: Baseline of higher platelets, higher reticulocyte, and no transfusion dependence of platelet are favorable prognostic factors. When platelets baseline is higher than 15.5×10(9)/L, CsA and androgen regimen is rational.

Association between plasma homocysteine level and renal function / 中国实用内科杂志

OBJECTIVE: To investigate the association between homocysteine and renal function as well as possible influencing factors in inpatient population. METHODS: From January 2014 to December 2015, a total of 27,025 hospitalized people who were admitted to the First Hospital of Peking University and were tested for plasma homocysteine were enrolled. Multiple linear regression model was performed to determine the relationship between homocysteine and eGFR. RESULTS: After excluding patients with cardiovascular disease and patients taking antihypertensive drugs, 6681 inpatient participants were included for analysis. After adjusting for age, blood pressure and other related factors, we found that eGFR decreased significantly(β=-0.53, SE=0.02, P<0.001) with the increase of homocysteine. Furthermore, the gender, age and renal functional state, had significant influence the relationship between homocysteine and eGFR. In women, those younger than 60 years old and renal impairment(eGFR<90 mL/[min·1.73 m~2]) population, the correlation was more significant. CONCLUSION: The association between homocysteine and eGFR is significant in inpatient population.

Effect of HIF-1α on Angiogenesis-Related Factors in K562 Cells / 中国实验血液学杂志

OBJECTIVE@#To explore the mechanisms of angiogenesis in chronic myeloid leukemia (CML) through detecting the levels of angiogenesis-related factors secreted from K562 cells after overexpression and interference of HIF-1α gene in K562 cells.@*METHODS@#The K562 cells were transfected by lentiviruses carried and interfered HIF-1α gene, then the transtected K562 cells with carried and interfered with HIF-1α gene were enrolled in overexpression and interference groups respectively, at the same time the K562 cells transfected by the empty virus were enrolled in control group. The cells were harvested after culture for 72 hours under normoxid condition. The transfection efficient in 3 groups was detected by fluorescence microscopy; the mRNA expression of HIF-1α gene and angiogenesis-related factors was detected by RT-PCR; the concentration of angiogenesis-related factors in the caltured supernatant was detected by ELISA.@*RESULTS@#The optimal MOI of K562 cells transfected with lentivirus was 10 and the transfection efficiency was about 50%. The positive rate of transfection after screening by puromycin was more than 90%. The mRNA expression of ANG-I, ANG-II, TGF-α and VEGF in the interference group was lower than that in the over-expression group, and the TGF-β1 mRNA expression in the interference group was higher than in the over-expression group. The mRNA expression of ANG-I and VEGF in the interference group was lower than that in the control group. TGF-αdid not could be detected, and the culture supernatant concentration of ANG-I and TNF-α in the interference group was lower than in the over-expression group, while the VEGF concentration in the interference group was higher than that in the over-expression group. All of the above-mentioned differences were statistically significant (P＜0.05).@*CONCLUSION@#The positive K562 cells transfected with leutivirus have been harvested by screening with puromycin. The HIF-1α mRNA positively regulates the mRNA expression of ANG-1, ANG-2, TGF-α, VEGF in K562 cells, promotes the antocrine ability of ANG-1 and TNF-α, moreover not stimulates the autocrine of TGF-α, the up-regulation of HIF-1α expression can inhibit the expression TGF-β1 in K562 cells and the autocrine of TGF-β1.

Composition and source apportionment differences of daytime and nighttime samples of PM2.5 in the community of suburb in Tianjin during different heating periods / 中华疾病控制杂志

Objective To study the pollution and source apportionment differences of different periods PM2.5 in the residential community of suburb in Tianjin City during heating and non-heating periods. Methods From 2015 to 2016, daytime and nighttime PM2.5 samples were collected at a community in the suburb of Tianjin. The mass concentration of PM2.5 samples and major chemical components in PM2.5, including metal elements, polycyclic aromatic hydrocarbons (PAHs) and inorganic water-soluble ions were monitored. Positive matrix factorization (PMF) model was used to apportion potential sources of metal elements, PAHs and inorganic water-soluble ions in daytime and nighttime PM2.5. Results In the heating period, the concentrations of some metal elements of suburban residential community were higher in the daytime than in the nighttime. In the non-heating period, the concentrations of some PAHs and inorganic water-soluble ions of suburban residential community were higher in the nighttime than in the daytime. Meanwhile, the concentrations of some metal elements were greater in the daytime than in the nighttime. When in heating period, the main source of PM2.5 in the suburban residential community was coal combustion during daytime and its source contribution rate was 50.1% while secondary aerosol and fuel combustion emissions of gasoline and diesel vehicles were main sources during nighttime and their source contribution rates were 41.0% and 35.9%. The principal source of daytime PM2.5 in the suburban residential community was indoor activity emissions during non-heating period, and secondary aerosol was main source during nighttime and their source contribution rates were 29.8% and 31.1%. Conclusions The pollution status of PM2.5 in residential communities of suburban is serious, and the source apportionment of day and night PM2.5 samples has different in different heating periods.

Influence of ceftriaxone on pharmacokinetics, anticoagulation andantithrombotic effects of phenolic acids from Danhong injection in rats / 药学学报

Danhong injection (DHI) and ceftriaxone sodium were used in combination based on their experimental uses in clinic. This study was designed to investigate the impact of ceftriaxone on pharmacokinetics and pharmacodynamics of the phenolic acids from DHI. After administration of DHI for 7 d, ceftriaxone (CFTX) was combined with DHI for the next 7 d in adult male Sprague-Dawley (SD) rats. All the drugs were administered through caudal vein. UHPLC-TQ-MS was applied in determining the plasma concentration of p-coumaric acid (p-CA), salvianolic acid D (SaD), rosmarinic acid (RA) and salvianolic acid B (SaB). The pharmacokinetic parameters of the combination group or the Danhong injection alone group were calculated by statistical moment method, Cmax and the average of the area under the curve AUC0-t using 90% confidence interval of the bioequivalence and bioavailability degree module in DAS 3.2.8 statistic software. The results showed that Cmax of p-CA, SaD, RA and SaB were unqualified within 90% confidence intervals for bioequivalence statistics. And the results showed that AUC0-t of SaD, RA and SaB within 90% confidence intervals for bioequivalence statistics were unqualified. There were no significant difference in the tmax (P>0.05). The results of anticoagulation in vivo showed that the international normalized ratio (INR), prothrombin time (PT), thrombin time (TT) and activated partial thromboplastin time (APTT) were significantly increased when combined with CFTX (P<0.05 or P<0.01). The results in antithrombotic effects revealed that the thromboxane B2 (TXB2) level in serum was significantly decreased (P<0.01) in the combination group compared with Danhong injection alone. However, there was no significant difference in antiplatelet effects. These results suggest that CFTX may enhance the anticoagulation and antithrombotic effects of DHI through altering pharmacokinetics and pharmacodynamics in SD rats.

Effect and mechanism of Huangkui capsuleon reduction of uremic toxin accumulation in an animal model of chronic kidney disease / 药学学报

Uremic toxins are harmful substances that accumulate in the body when the renal function declines in patients with chronic kidney disease (CKD). It is an important factor contributing to accelerated progression of CKD. There is no effective treatment for reducing uremic toxins. As an extensively used medicine for treatment of CKD in the clinic, Huangkui capsule is effective but the mechanism of its action remains unclear. This study investigated the effect of Huangkui on the accumulation of uremic toxins in CKD rats, with the discussion about its mechanism of action. UPLC-TQ/MS was used to detect the accumulation of uremic toxins in CKD rats after oral gavage with Huangkui. 16S rDNA sequencing technology was used to analyze the gut bacteria composition in rats. HPLC-FLD was used to detect the uremic toxins and their molecular precursors in feces. The effect and mechanism of Huangkui on the uremic toxin precursor in gut bacteria were studied by anaerobic culture system in vitro. All procedures were approved by the Institutional Animal Care and Use Committee of the Nanjing University of Chinese Medicine. The results showed that Huangkui (0.675 g·kg-1) could effectively inhibit the accumulation of uremic toxin indoxyl sulfate (IS) in CKD rats, with IS concentration in rat's plasma, liver and kidney decreased by 49.5%, 68.9% and 40.6%, respectively. Huangkui didn't affect the metabolic pathway of IS in host liver, didn't intervene the process of the IS precursor molecule indole conversion to IS. Instead, Huangkui significantly decreased the indole content in gut, with the indole in CKD rat's feces decreased by 46.4%, suggesting that the gut bacteria may be a target for intervene IS biosynthesis by Huangkui. Huangkui didn't affect the abundance of enterobacteriaceae bacteria (the main gut flora of indole synthesis) in CKD rats, suggesting that Huangkui didn't interfere with indole biosynthesis by directly affecting the abundance of indole synthesis related bacteria. Huangkui at 4 000, 400, 40, and 4 μg·mL-1 showed a dose-dependent inhibition of the indole production by gut bacteria in vitro. The bacteria tryptophan transport concentration decreased from 83.4 μmol·L-1 to 43.6 μmol·L-1 after co-incubated with Huangkui for 12 h, suggesting that Huangkui inhibited indole production of gut bacteria by interfering with tryptophan transportation. These results indicate that gut bacteria may be a potential target for alleviation of uremic toxin accumulation and for delaying CKD progression.

The life span of red blood cell in patients with severe/very severe aplastic anemia / 中华血液学杂志

Objective: To explore the life span of red blood cells (RBC) in patients with severe/very severe aplastic anemia (SAA/VSAA). Methods: Clinical data of 128 SAA/VSAA patients from November 2016 to April 2017 were retrospectively analyzed, and 13 healthy volunteers in the same period was used as normal control. The endogenous Breath Carbon Monoxide (CO) test was used to detect the life span of RBC in SAA/VSAA patients, and the effect of immunosuppressive therapy (IST) on the life span of RBC in these patients was explored. Results: The mean life span of RBC in 51 untreated SAA/VSAA patients was (50.69±21.43) d, which was significantly shorter than that in normal controls[(111.85±31.55) d](t=-6.611, P<0.001). The mean life span of RBC in 77 patients treated with IST was (87.14±39.28) d. The mean life span of RBC in complete responses (CR), hematologic response (HR) and non-response (NR) patients were (106.15±32.12) d, (92.00±38.60) d and (50.44±21.56) d, respectively. The life span of RBC in patients with HR was significantly longer than that in newly diagnosed and NR patients (t=7.430, P<0.001; t=4.846, P=0.002), which was similar to that in the normal controls (t=-1.743,P=0.085). There was no statistical significance between CR patients and the normal controls in the mean life span of RBC (t=-0.558, P=0.579). No factor affecting the RBC life span was found in univariate logistical regression analyses in the newly diagnosed SAA/VSAA patients. The serum levels of IL-2R and IL-6 were much lower in HR patients than NR patients[IL-2R: 4.3×105 U/L vs 6.5×105 U/L, z=-2.733, P=0.006; IL-6: 2.6 (2.0-17.7) ng/L vs 6.1 (2.0-14.4) ng/L, z=-2.968, P=0.003]. Of the 51 newly diagnosed patients, 38 received IST and their 3-month curative effect was evaluated. Receiver operator characteristics (ROC) curve was used to analyze the predictive effect of RBC life span of untreated patients on the efficacy of IST before treatment. The cut-off point was 60 days with sensitivity of 37.5% and specificity of 86.4%. In 9 cases with life span of RBC>60 d before IST, 6 cases acquired HR, while in 29 cases with life span of RBC ≤ 60 d before IST, 10 cases acquired HR, the difference was not statistically significant (P=0.128). Conclusion: The life span of RBC in SAA/VSAA patients was shortened, which can be improved even recovered to the normal after IST. Elevated cytokines might play a role in the pathophysiology of the shortened RBC life span in SAA/VSAA.

Using target next-generation sequencing assay in diagnosing of 46 patients with suspected congenital anemias / 中华血液学杂志

Objective: To evaluate the impact of the targeted next-generation sequencing (NGS) assay for difficult congenital anemias. Methods: Blood Disease Hospital Anemia Panel 2014 (BDHAP-2014) including 217 known genes of congenital anemias was developed. NGS and parental verification were performed for patients who were suspected diagnosed with congenital anaemia from August 2014 to July 2017. Results: A total of 46 patients were enrolled in this study, the clinical suspection were 11 cases Fanconi anemia (FA), 8 cases congenital dyserythropoietic anemia (CDA), 6 cases congenital sideroblast anemia (CSA), 12 cases congenital hemolytic anemia (CHA), 1 case dyskeratosis congenital (DC), 4 cases iron-refractory iron deficiency anemia and 4 cases unexplained cytopenia (Uc), respectively. 28 (60.9%) of 46 patients became confirmed cases after targeted NGS, corresponding to 44 mutations of which 33 were new. 26(56.5%) patients with results of the assay matching to clinical suspection, including FA (5/11, 45.5%), CSA (6/6, 100.0%), CDA (3/8, 37.5%) and CHA (12/12, 100.0%). 2 (4.3%) cases not matching to clinical suspection, including dyskeratosis congenital (DC) was made in 1(2.2%) patients with suspected FA and familial hemophagocytic lymphohistiocytosis (FHL) was made in 1(2.2%) patients with suspected unexplained cytopenia (Uc). In 12 CHA patients, the hemolytic type was further clarified by the NGS. The remaining 18 cases were not clearly diagnosed. Conclusion: Targeted NGS assay is of major impact on congenital anemias. The assay should be used routinely in congenital anemias.