1.Identification of unknown pollutants in drinking water based on solid-phase extraction and supramolecular solvent extraction
Zixin QIAN ; Yuhang CHEN ; Chao FENG ; Yuanjie LIN ; Qian XU ; Ziwei LIANG ; Xinyu WANG ; Dasheng LU ; Ping XIAO ; Zhijun ZHOU
Journal of Environmental and Occupational Medicine 2025;42(7):854-861
Background With the progression of industrialization, an increasing number of emerging contaminants are entering aquatic environments, posing significant threats to the safety of drinking water. Therefore, establishing a system for identifying unknown hazardous factors and implementing safety warning mechanisms for drinking water is of paramount importance. Among these efforts, non-target screening plays a critical role, but its effectiveness is largely constrained by the scope of coverage of sample pre-treatment methods. Objective To integrate modern chromatography/mass spectrometry techniques with advanced data mining methods to develop a non-discriminatory sample pre-treatment method for comprehensive enrichment of unknown contaminants in drinking water, laying a technical foundation for the discovery and identification of unknown organic hazardous factors in drinking water. Methods A non-discriminatory pre-treatment method based on supramolecular and solid-phase extraction was developed. The final target compounds including 333 pesticides, 194 pharmaceuticals and personal care products (PPCPs), and 59 per- and polyfluoroalkyl substances (PFASs) were used for optimizing the pre-treatment method, confirming its coverage. The impacts of different eluents on the absolute recovery rates of target compounds were compared to select the conditions with the highest recovery for sample pre-treatment. The effects of different supramolecular solvents and salt concentrations on target compound recovery were also evaluated to determine the most suitable solvent and salt concentration. Results The solid-phase extraction elution solvents, supramolecular extraction solvents, and salt concentrations were optimized based on the target compound recovery rates. The optimal recovery conditions were achieved using 2 mL methanol, 2 mL methanol (containing 1% formic acid), 2 mL ethyl acetate, 2 mL dichloromethane, hexanediol supramolecular solvent, and 426 mg salt. The detection method developed based on these conditions showed a good linear relationship for all target compounds in the range of 0.1-100.0 ng·mL−1, with R² > 0.99. The method’s limit of detection ranged from 0.01 ng−1 to 0.95 ng−1, and 95% of target compounds were recovered in the range of 20%-120%, with relative standard deviation (RSD) less than 30%, indicating good precision. Conclusion The combined pre-treatment method of solid-phase extraction and supramolecular solvent extraction can effectively enrich contaminants in drinking water across low, medium, and high polarities, enabling broad-spectrum enrichment of diverse trace contaminants in drinking water. It provides technical support for broad-spectrum, high-throughput screening and identification of organic pollutants in drinking water, and also serves as a reference for establishing urban drinking water public safety warning systems.
2.Application of Mendelian randomization analysis in exploring the etiology of nonalcoholic fatty liver disease
Ziwei GUO ; Qingjuan WU ; Yongan YE ; Lanyu CHEN ; Wenliang LYU
Journal of Clinical Hepatology 2024;40(3):589-593
Nonalcoholic fatty liver disease (NAFLD) is an abnormal lipid metabolic disorder of the liver characterized by accumulation of a large amount of lipids in the liver, and it is currently the most common liver disease around the world. Mendelian randomization (MR) incorporates genomic data into traditional epidemiological study designs to infer the causal relationship between exposure factors and disease risk. In recent years, MR has been widely used in studies on inference of the etiology of NAFLD. This article systematically summarizes the advances in the application of MR in NAFLD research, so as to provide new ideas for understanding the nature of the disease and scientific interventions.
3.Diagnosis and treatment of 131 adult patients with bronchopulmonary sequestration: A retrospective analysis
Xiaobo GU ; Qiankun CHEN ; Ziwei WAN ; Cong YE ; Yuming ZHU ; Shijian DU
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2024;31(01):105-110
Objective To explore the safety and feasibility of uni-portal video-assisted thoracic surgery (VATS) for the treatment of bronchopulmonary sequestration (BPS). Methods The clinical data of BPS patients with surgical resection in Shanghai Pulmonary Hospital from February 2010 to June 2021 were reviewed. The patients were divided into a VATS group and a thoracotomy group according to the operation method. The operation time, intraoperative blood loss, hospital stay and postoperative complication rate were compared between the two groups. The VATS group was subdivided into a uni-portal VATS group and a multi-portal VATS group for subgroup analysis. Results Finally 131 patients were enrolled, including 62 males and 69 females with an average age of 39.3±13.2 years. There were 103 patients in the VATS group and 28 patients in the thoracotomy group. A total of 104 patients were diagnosed with left lower BPS, 26 with right lower BPS and 1 with bilateral lower BPS. The main symptom was cough (88 patients, 67.2%). There were 119 patients diagnosed by thoracic enhanced CT before operation. Compared with the thoracotomy group, the operation time was not statistically different (P=0.717), but the blood loss was less, the rate of postoperative complication was lower and hospital stay was shorter in the VATS group (P<0.05). The rate of conversion to open surgery in the uni-portal VATS group and multi-portal VATS group was 11.8% and 13.5%, respectively. Meanwhile, patients in the uni-portal VATS group had shorter operation time and postoperative hospital stay, less blood loss and lower postoperative complication rate than those in the multi-portal VATS group (P<0.05). Conclusion In order to improve the rate of diagnosis, the lung enhanced CT scan should be selected as an optimal noninvasive method in adult suspected patients (especially those with solid cystic and solid lesions in the lower lobe). Uni-portal VATS is a safe and feasible method for BPS which can be widely promoted.
4.A research of omics-based biological aging clocks and their applications
Ziwei ZHU ; Shanshan CHENG ; Xiang CHENG ; Weihong CHEN ; Chaolong WANG
Chinese Journal of Epidemiology 2024;45(9):1291-1301
Aging, a process of functional decline with the increase of chronological age, is a major risk factor for chronic diseases. Aging shows significant individual differences, which is influenced by both genetic and environmental factors. Accurate measurement of physiological age helps identify individuals with accelerated aging and those at high risk for chronic diseases and mortality, which would promote individual health management and precision medicine for healthy aging. In this paper, we summarize the omics-based aging clocks and discuss their current and future applications.
5.Expert Consensus of Multidisciplinary Diagnosis and Treatment for Paroxysmal Nocturnal Hemoglobinuria(2024)
Miao CHEN ; Chen YANG ; Ziwei LIU ; Wei CAO ; Bo ZHANG ; Xin LIU ; Jingnan LI ; Wei LIU ; Jie PAN ; Jian WANG ; Yuehong ZHENG ; Yuexin CHEN ; Fangda LI ; Shunda DU ; Cong NING ; Limeng CHEN ; Cai YUE ; Jun NI ; Min PENG ; Xiaoxiao GUO ; Tao WANG ; Hongjun LI ; Rongrong LI ; Tong WU ; Bing HAN ; Shuyang ZHANG ; MULTIDISCIPLINE COLLABORATION GROUP ON RARE DISEASE AT PEKING UNION MEDICAL COLLEGE HOSPITAL
Medical Journal of Peking Union Medical College Hospital 2024;15(5):1011-1028
Paroxysmal nocturnal hemoglobinuria (PNH) is an acquired clonal hematopoietic stem cell disease caused by abnormal expression of glycosylphosphatidylinositol (GPI) on the cell membrane due to mutations in the phosphatidylinositol glycan class A(PIGA) gene. It is commonly characterized by intravascular hemolysis, repeated thrombosis, and bone marrow failure, as well as multiple systemic involvement symptoms such as renal dysfunction, pulmonary hypertension, swallowing difficulties, chest pain, abdominal pain, and erectile dysfunction. Due to the rarity of PNH and its strong heterogeneity in clinical manifestations, multidisciplinary collaboration is often required for diagnosis and treatment. Peking Union Medical College Hospital, relying on the rare disease diagnosis and treatment platform, has invited multidisciplinary clinical experts to form a unified opinion on the diagnosis and treatment of PNH, and formulated the
6.TCM Guidelines for Diagnosis and Treatment of Chronic Cough in Children
Xi MING ; Liqun WU ; Ziwei WANG ; Bo WANG ; Jialin ZHENG ; Jingwei HUO ; Mei HAN ; Xiaochun FENG ; Baoqing ZHANG ; Xia ZHAO ; Mengqing WANG ; Zheng XUE ; Ke CHANG ; Youpeng WANG ; Yanhong QIN ; Bin YUAN ; Hua CHEN ; Lining WANG ; Xianqing REN ; Hua XU ; Liping SUN ; Zhenqi WU ; Yun ZHAO ; Xinmin LI ; Min LI ; Jian CHEN ; Junhong WANG ; Yonghong JIANG ; Yongbin YAN ; Hengmiao GAO ; Hongmin FU ; Yongkun HUANG ; Jinghui YANG ; Zhu CHEN ; Lei XIONG
Journal of Nanjing University of Traditional Chinese Medicine 2024;40(7):722-732
Following the principles of evidence-based medicine,in accordance with the structure and drafting rules of standardized documents,based on literature research,according to the characteristics of chronic cough in children and issues that need to form a consensus,the TCM Guidelines for Diagnosis and Treatment of Chronic Cough in Children was formulated based on the Delphi method,expert discussion meetings,and public solicitation of opinions.The guideline includes scope of application,terms and definitions,eti-ology and diagnosis,auxiliary examination,treatment,prevention and care.The aim is to clarify the optimal treatment plan of Chinese medicine in the diagnosis and treatment of this disease,and to provide guidance for improving the clinical diagnosis and treatment of chronic cough in children with Chinese medicine.
7.Simultaneous detection of 34 emerging contaminants in tap water by HPLC-MS/MS and health risk assessment
Yixuan CAO ; Ziwei YUAN ; Xiaoxi MU ; Chenshan LV ; Haiyan CUI ; Tao WANG ; Zhiwen WEI ; Zhongbing CHEN ; Hongyan ZOU ; Keming YUN ; Meng HU
Chinese Journal of Forensic Medicine 2024;39(1):31-38
Objective To establish a simultaneous detection approach for 34 emerging contaminants(ECs)in tap water by liquid chromatography-tandem mass spectrometry(HPLC-MS/MS).Human health risk assessment was performed according to the detection results from 43 tap water samples.Methods Tap water samples were concentrated and extracted by solid phase extraction,and then blown to near dry by nitrogen at 40℃.The sample extracts were dissolved in methanol-water solution(95:5,VN)to 0.5 mL for analyzing.Agilent Jet Stream Electrospray Ionization(AJS ESI)and the multiple reaction monitoring(MRM)mode were performed for MS to acquire the data of 34 ECs.A database including precursor ion,product ion and retention times was established accordingly.Results The average linear correlation coefficients(r)of 34 kinds of ECs was 0.995 9.The limits of detection were 0.01~0.60 ng/L and the recoveries were between 60.7%and 119.8%.The intra-group precisions were between 0.05%~9.89%and the intra-day precisions were between 0.20%~14.40%for the spiked samples.The method was applied to analyze 43 tap water samples and a total of 15 ECs were detected.According to the results,the detection rate of caffeine was the highest(84%),and the concentration range was ND~74.42 ng/L.Among all the ECs detected,1,2,3-benzotriazole had the highest concentration(ND~361.15 ng/L),where detection rate was 44%.Humans may be exposed to these ECs by drinking the tap water.The human health risk assessments of 12 kinds of ECs were carried out,however,the estimated risk was negligible(risk quotient<0.01).Conclusion The method is simple,highly sensitive and selective,and could meet the detection needs of ECs at trace level in tap water.There was no human health risk posed for ECs identified in 43 tap water samples analyzed by this method.
8.Effects of Xin-Tong-Tai granule on expression of ox-LDL,ICAM-1 and VCAM-1 in ApoE-/-mice with atherosclerosis
Qinghua ZENG ; Ziwei YIN ; Aisi HUANG ; Jingyi CHEN ; Zhihua GUO ; Jiaming WEI
Chinese Journal of Pathophysiology 2024;40(6):989-996
AIM:To investigate the effects and mechanism of Xin-Tong-Tai granule on oxidized low-density li-poprotein(ox-LDL),intercellular adhesion molecule-1(ICAM-1)and vascular cell adhesion molecule-1(VCAM-1)in ApoE-/-mice with atherosclerosis(AS).METHODS:A total of 72 SPF-grade healthy male ApoE-/-mice aged 6~8 weeks were fed with high-fat diet for 12 weeks to replicate AS models,and 12 SPF-grade healthy male C57BL/6J wild mice were fed with ordinary diet as the control group.After the corresponding drugs were administered for 8 weeks,the body weight and general condition of mice in each group were observed.The serum levels of total cholesterol(TC),triglyceride(TG),high-density lipoprotein cholesterol(HDL-C)and low-density lipoprotein cholesterol(LDL-C)were detected by biochemi-cal kits.The pathological structures of aorta were observed by HE and oil red O staining.The levels of serum ox-LDL and aortic ICAM-1 and VCAM-1 were detected by ELISA.The protein levels of NADPH oxidase 4(NOX4),NOX subunit p22phox,inhibitor of κB kinase-α(IKK-α),IKK-β and nuclear factor-κB(NF-κB)in aorta were detected by Western blot.RESULTS:Compared with control group,the mice in model group showed increased body weight(P<0.05),dull and lo-cal shedding hair,slow grasping response,increased serum TC,TG and LDL-C levels,decreased serum HDL-C level(P<0.05),increased the levels of serum ox-LDL and aortic ICAM-1 and VCAM-1(P<0.05),and increased protein expres-sions of NOX4,p22phox,IKK-α,IKK-β and NF-κB in aorta(P<0.05).Compared with model group,the body weight of mice in each treatment group decreased(P<0.05),the hair loss and the response flexibility were also improved.The se-rum levels of TC,TG and LDL-C decreased and HDL-C increased(P<0.05).The levels of serum ox-LDL and aortic ICAM-1(except the low-dose Xin-Tong-Tai granule group)and VCAM-1 decreased(P<0.05).The protein levels of NOX4,p22phox,IKK-α,IKK-β and NF-κB in aorta decreased(P<0.05).HE and oil red O staining showed that typical AS plaques could be seen in blood vessels of the model group,and the red-stained areas were widely distributed.The above lesions were alleviated to different degrees in each treatment group compared with model group.CONCLUSION:Xin-Tong-Tai granule reduces the atherosclerotic plaque area of ApoE-/-mice induced by high-fat diet,decreased serum TC,TG and LDL-C levels,increased HDL-C level,decreased the levels of serum ox-LDL and aorta ICAM-1 and VCAM-1,and inhibited protein expression of NOX4,p22phox,IKK-α and IKK-β in the aorta,thereby attenuating AS.
9.Application of multivariate statistical process control techniques in pharmaceutical manufacturing process
Yuting ZHU ; Ziwei HAN ; Peng HAN ; Xuesong LIU ; Xinyi XU ; Yong CHEN
Drug Standards of China 2024;25(3):227-233
The basic concept and related background of multivariate statistical process control(MSPC)were intro-duced.The basic process of MSPC implementation and the common statistics and control charts were described.The important role of MSPC in the pharmaceutical production process was emphasized,especially in the field of tra-ditional Chinese medicine,providing reference for the selection of quality control methods in drug production process.The advantages and disadvantages of MSPC were summarized,and the development trend of MSPC in drug production and quality control was prospected.
10.Efficacy and safety of Compound danshen preparations combined with chemical drugs for peptic ulcer:a meta-analysis
Yakun ZHAN ; Jin ZENG ; Ziwei HU ; Juliang CHEN
China Pharmacy 2024;35(23):2915-2922
OBJECTIVE To systematically evaluate the efficacy and safety of compound danshen preparations combined with conventional chemical drug treatment for peptic ulcer (PU), providing evidence-based guidance for clinical treatment of PU. METHODS Related clinical randomized controlled trials were collected from CNKI, VIP, Wangfang data, CBM, PubMed, Embase and Web of Science from their establishment date to September 30, 2023. The qualities of included literature were evaluated by Cochrane Systematically Evaluator Manual 5.1.0. Meta-analysis, sensitivity analysis and publication bias analysis were conducted with RevMan 5.3 software. RESULTS Totally 26 pieces of literature were included with total of 2 451 cases, including 1 243 cases in trial group (compound danshen preparations+conventional chemical drug treatment) and 1 208 cases in the control group (conventional chemical drug treatment). In terms of effectiveness, trial group had significant advantages in ulcer healing rate [OR=4.66, 95%CI (3.53, 6.15), P<0.000 01], HP eradication rate [OR=1.90, 95%CI (1.12, 3.22), P=0.02],and pain relief rate [OR=3.91, 95%CI (2.31, 6.61), P<0.000 01] than control group, while ulcer recurrence rate [OR=0.22, 95%CI (0.15, 0.32), P<0.000 01] and serum levels of pepsinogen (PG)Ⅰ [SMD=-1.92, 95%CI (-2.25, -1.58), P<0.000 01], PGⅡ [SMD=-3.88, 95%CI (-4.35, -3.41), P<0.000 01] and G-17 [SMD=-3.44, 95%CI (-3.87, -3.00), P<0.000 01] were significantly lower than control group. In terms of safety, the main adverse reactions were abdominal discomfort, headache, dizziness, dry mouth, facial flushing, etc. There was no significant difference in the incidence of adverse reactionsbetween the two groups [OR=1.08, 95%CI (0.75, 1.54), P=0.69]. Subgroup analysis of ulcer healing rate and HP eradication rate based on dosage form showed that HP eradication rate in the compound danshen pellet group was not significantly improved compared to the control group, with consistent results for the remaining outcomes. The sensitivity analysis showed that above results were stable. There was less possibility of publication bias in this study. CONCLUSIONS Compared with conventional chemical drug treatment alone, the combination of compound danshen preparations can effectively improve the clinical symptoms of PU patients with similar safety.

Result Analysis
Print
Save
E-mail