1.Expert consensus on surgical treatment of oropharyngeal cancer
China Anti-Cancer Association Head and Neck Oncology Committee ; China Anti-Cancer Association Holistic Integrative Oral Cancer on Preventing and Screen-ing Committee ; Min RUAN ; Nannan HAN ; Changming AN ; Chao CHEN ; Chuanjun CHEN ; Minjun DONG ; Wei HAN ; Jinsong HOU ; Jun HOU ; Zhiquan HUANG ; Chao LI ; Siyi LI ; Bing LIU ; Fayu LIU ; Xiaozhi LV ; Zheng-Hua LV ; Guoxin REN ; Xiaofeng SHAN ; Zhengjun SHANG ; Shuyang SUN ; Tong JI ; Chuanzheng SUN ; Guowen SUN ; Hao TIAN ; Yuanyin WANG ; Yueping WANG ; Shuxin WEN ; Wei WU ; Jinhai YE ; Di YU ; Chunye ZHANG ; Kai ZHANG ; Ming ZHANG ; Sheng ZHANG ; Jiawei ZHENG ; Xuan ZHOU ; Yu ZHOU ; Guopei ZHU ; Ling ZHU ; Susheng MIAO ; Yue HE ; Jugao FANG ; Chenping ZHANG ; Zhiyuan ZHANG
Journal of Prevention and Treatment for Stomatological Diseases 2024;32(11):821-833
With the increasing proportion of human papilloma virus(HPV)infection in the pathogenic factors of oro-pharyngeal cancer,a series of changes have occurred in the surgical treatment.While the treatment mode has been im-proved,there are still many problems,including the inconsistency between diagnosis and treatment modes,the lack of popularization of reconstruction technology,the imperfect post-treatment rehabilitation system,and the lack of effective preventive measures.Especially in terms of treatment mode for early oropharyngeal cancer,there is no unified conclu-sion whether it is surgery alone or radiotherapy alone,and whether robotic minimally invasive surgery has better func-tional protection than radiotherapy.For advanced oropharyngeal cancer,there is greater controversy over the treatment mode.It is still unclear whether to adopt a non-surgical treatment mode of synchronous chemoradiotherapy or induction chemotherapy combined with synchronous chemoradiotherapy,or a treatment mode of surgery combined with postopera-tive chemoradiotherapy.In order to standardize the surgical treatment of oropharyngeal cancer in China and clarify the indications for surgical treatment of oropharyngeal cancer,this expert consensus,based on the characteristics and treat-ment status of oropharyngeal cancer in China and combined with the international latest theories and practices,forms consensus opinions in multiple aspects of preoperative evaluation,surgical indication determination,primary tumor re-section,neck lymph node dissection,postoperative defect repair,postoperative complication management prognosis and follow-up of oropharyngeal cancer patients.The key points include:① Before the treatment of oropharyngeal cancer,the expression of P16 protein should be detected to clarify HPV status;② Perform enhanced magnetic resonance imaging of the maxillofacial region before surgery to evaluate the invasion of oropharyngeal cancer and guide precise surgical resec-tion of oropharyngeal cancer.Evaluating mouth opening and airway status is crucial for surgical approach decisions and postoperative risk prediction;③ For oropharyngeal cancer patients who have to undergo major surgery and cannot eat for one to two months,it is recommended to undergo percutaneous endoscopic gastrostomy before surgery to effectively improve their nutritional intake during treatment;④ Early-stage oropharyngeal cancer patients may opt for either sur-gery alone or radiation therapy alone.For intermediate and advanced stages,HPV-related oropharyngeal cancer general-ly prioritizes radiation therapy,with concurrent chemotherapy considered based on tumor staging.Surgical treatment is recommended as the first choice for HPV unrelated oropharyngeal squamous cell carcinoma(including primary and re-current)and recurrent HPV related oropharyngeal squamous cell carcinoma after radiotherapy and chemotherapy;⑤ For primary exogenous T1-2 oropharyngeal cancer,direct surgery through the oral approach or da Vinci robotic sur-gery is preferred.For T3-4 patients with advanced oropharyngeal cancer,it is recommended to use temporary mandibu-lectomy approach and lateral pharyngotomy approach for surgery as appropriate;⑥ For cT1-2N0 oropharyngeal cancer patients with tumor invasion depth>3 mm and cT3-4N0 HPV unrelated oropharyngeal cancer patients,selective neck dissection of levels ⅠB to Ⅳ is recommended.For cN+HPV unrelated oropharyngeal cancer patients,therapeutic neck dissection in regions Ⅰ-Ⅴ is advised;⑦ If PET-CT scan at 12 or more weeks after completion of radiation shows intense FDG uptake in any node,or imaging suggests continuous enlargement of lymph nodes,the patient should undergo neck dissection;⑧ For patients with suspected extracapsular invasion preoperatively,lymph node dissection should include removal of surrounding muscle and adipose connective tissue;⑨ The reconstruction of oropharyngeal cancer defects should follow the principle of reconstruction steps,with priority given to adjacent flaps,followed by distal pedicled flaps,and finally free flaps.The anterolateral thigh flap with abundant tissue can be used as the preferred flap for large-scale postoperative defects.
2.Survival analysis of 6 737 surgically resected gastric cancer cases in China from a large single institution hospital-based cancer registry database
Jie SHEN ; Jiangli WANG ; Zezhou WANG ; Miao MO ; Changming ZHOU ; Jing YUAN ; Dazhi XU ; Ying ZHENG
China Oncology 2024;34(3):268-277
Background and purpose:Follow-up data of 6 737 patients undergoing surgery for gastric cancer were collected based on hospital registration,and the 1-,3-and 5-years observed overall survival(OS)rates and disease-free survival(DFS)rates were analyzed to provide real-world research evidence for the prevention and control of gastric cancer and policy making in China.Methods:A total of 6 737 gastric cancer patients who underwent surgical treatment at Fudan University Shanghai Cancer center from 2015 to 2020 were included in this study.Clinical information and the follow-up endpoint data were collected through medical records review,telephone visits and death registry data linkage.The last follow-up date was November 30,2023.Kaplan-Meier method was applied in evaluating the 1-,3-and 5-year OS rate and DFS rate,and survival data were described by different subgroups including age group,gender,treatment period,tumor staging,and pathological characteristics.Results:With a median follow-up time of 50.99 months,the 5-year OS rate of surgically resected gastric cancer patients was 70.37%,and 5-year DFS rate in Ⅰ-Ⅲ stage cases was 69.46%.The 5-year OS rates of stage Ⅰ,Ⅱ,Ⅲ and Ⅳ were 94.32%,82.56%,51.01%and 23.97%,respectively.The differences in survival among patients with different age,tumor location,gross classification,Borrmann classification and Laurence classification were significant.Conclusion:Staging is an important factor directly affecting the survival of gastric cancer patients.Screening and early diagnosis and treatment in large population,especially high-risk group,should be strengthened to further improve the patients'survival.
3.Targeting TRIM63 to regulate oxidative stress pathways and improve blood-brain barrier injury and neurological recovery after acute stroke
Jing ZHOU ; Changming WEN ; Jun GAO
Journal of Apoplexy and Nervous Diseases 2024;41(9):806-810
Objective To investigate the effect of targeting TRIM63 in regulating oxidative stress pathways and im-proving blood-brain barrier injury and neurological recovery after acute stroke.Methods Adult male C57 mice were ran-domly divided into Sham group,Vehicle group,and Myomed-205 group,and a mouse model of transient middle cerebral artery occlusion(tMCAO)was constructed.After removal of the suture,the mice in the Myomed-205 group and the Ve-hicle group were given intraperitoneal injection of TRIM63 inhibitor,and those in the Sham group were given intraperito-neal injection of an equal volume of solvent.On day 3 of reperfusion,TTC staining was used to observe cerebral infarct vol-ume,neurological score was used to evaluate neurological recovery,and the dry-wet weight method was used to measure brain water content.Reactive oxygen species(ROS),superoxide dismutase(SOD),glutathione(GSH),and malondial-dehyde(MDA)kits were used to measure the content of oxidative stress indices in brain.The Evans Blue method was used to observe blood-brain barrier injury,and Western blotting was used to measure the protein expression levels of ZO-1 and Occludin.Results Compared with the Vehicle group,the Myomed-205 group had a significant reduction in cerebral infarct volume(P<0.05),and compared with the control group,the 100 mg/ml Myomed-205 treatment group had signifi-cant reductions in neurological score(P<0.05)and brain water content(P<0.05).Compared with the Vehicle group,the Myomed-205 group had a significant reduction in the number of ROS-positive cells on days 3,7,and 14 after stroke(P<0.05),and compared with the control group,the Myomed-205 group had a significant reduction in the expression level of the pro-oxidative stress index MDA(P<0.05)and significant increases in the expression levels of the antioxidant indices GSH and SOD(P<0.05).Compared with the Vehicle group,the Myomed-205 group had a significant reduction in EB leakage on days 7 and 14 after stroke(P<0.05)and significant increases in the protein expression levels of ZO-1 and Occludin(P<0.05).Conclusion Inhibition of the TRIM63 signaling pathway can promote neurological recovery after cerebral ischemic stroke in mice,which may be achieved by alleviating oxidative stress and blood-brain barrier injury.
4.Metastasis patterns and survival analysis of 572 patients with metastatic cervical cancer:a hospital-based real world study
Jie SHEN ; Xiaoshuang FENG ; Hao WEN ; Changming ZHOU ; Miao MO ; Zezhou WANG ; Jing YUAN ; Xiaohua WU ; Ying ZHENG
China Oncology 2024;34(4):361-367
Background and purpose:Effective treatment for cervical cancer patients is one of the global strategies to eliminate cervical cancer.By analyzing the metastasis characteristics and survival status of patients with distant metastasis of cervical cancer from a hospital-based cancer registry data,our study provided real-world evidence for better survival of cervical cancer and finally eliminating cervical cancer.Methods:A total of 572 cervical cancer patients who had metastasis cancer at the initial diagnosis or developed distant metastasis during follow-up in Fudan University Shanghai Cancer Center from 2008 to 2017 were included in this study.Medical records review,telephone visits and death registry data linkage were applied in collecting endpoint data.The first follow-up date was the diagnose date of metastasis,and the last follow-up date was November 1,2020.Kaplan-Meier method was applied in evaluating the 1-,3-and 5-year overall survival(OS)rates for overall and site-specific patients.Results:The median follow-up time was 38.93 months,and 348 cases died during the follow-up.72.55%were single site metastasis,and 27.45%were multiple metastases.Among all metastatic sites,the proportion of lung metastasis was the highest,41.26%,15.21%to bone,and 11.54%to liver.After metastasis,the 1-year,3-year and 5-year OS rates were 62.29%(95%CI:62.25-62.33),33.13%(95%CI:33.08-33.18)and 23.42%(95%CI:23.37-23.47),respectively.In single site metastasis,1-year OS was the highest after metastasis to the lung(72.52%).Besides,there was no significant difference among different metastatic sites,both in 3-year and 5-year OS.Conclusion:The most frequent distant metastatic sites of cervical cancer are lung,bone and liver.The survival rate after metastasis is poor.Further research with systematic treatment strategy is required for better survival.
5.Efficacy of anlotinib in the treatment of advanced radioactive iodine-refractory differentiated thyroid cancer and the effect on iodine uptake of lesions
Fanglei ZHANG ; Hongyan ZHAI ; Ruihong YAN ; Changming ZHANG ; Zhenhu ZHOU
Chinese Journal of Nuclear Medicine and Molecular Imaging 2024;44(10):592-596
Objective:To study the efficacy and safety of anlotinib in the treatment of advanced radioactive iodine-refractory differentiated thyroid cancer (RAIR-DTC) and the effect of anlotinib on iodine uptake of lesions.Methods:A retrospective analysis was performed on 23 patients (10 males and 13 females, age (59.1±8.7) years) with advanced RAIR-DTC who were treated with anlotinib in Liaocheng Hospital Affiliated to Shandong First Medical University between January 2019 and February 2023 and met the enrollment criteria. Thyroid function, serum thyroglobulin (Tg) and Tg antibody (TgAb) were determined every 6 weeks during the treatment with anlotinib, and maximum diameter of target lesion (TL) was monitored by CT every 12 weeks, in order to evaluate the therapeutic efficacy, and treatment-related adverse reactions were observed. Diagnostic 131I whole body scan (Dx-WBS) was performed in some patients to evaluate the changes in iodine uptake of lesions after anlotinib treatment. In this study, the posttreatment changes of patients within 24 weeks during the treatment were analyzed. The maximum diameter of TL and Tg at different time points were compared by Friedman test, and were further compared in pairs with P values corrected by Bonferroni method. Results:After 24 weeks of treatment with anlotinib, 8 of 23 patients achieved partial response, 15 had stable disease, and no patients achieved complete response. Serum Tg levels at 6, 12, 18, 24 weeks after anlotinib treatment were 189.5(85.0, 483.3), 127.7(52.4, 319.8), 82.0(40.2, 213.5) and 80.1(39.9, 205.0) μg/L, all of which were lower than the baseline level of Tg (384.5(210.9, 1 605.0) μg/L; χ2 values: 4.23-7.86, all P<0.001). Tg level at 18 weeks after treatment was statistically different from that at 12 weeks after treatment ( χ2 =3.06, P<0.001), but was not statistically different from that at 24 weeks after treatment ( χ2 =12.57, P=0.059). The maximum TL diameters of lung and cervical lymph nodes were significantly reduced at week 12 and 24 of anlotinib treatment compared with baseline ( χ2 values: 14.76-31.12, all P<0.001), while there was no significant difference in TL maximum diameter at 12 and 24 weeks of treatment ( χ2 values: 5.65, 9.02, P values: 0.314, 0.070). Common adverse reactions included hypertension, hand-foot syndrome, hyperacylglyceremia and proteinuria. No adverse reactions above grade 4 or death related to adverse reactions occurred. Dx-WBS evaluation was performed in 7 patients after anlotinib treatment, and no change in iodine uptake was found. Conclusions:Anlotinib has a clear effect on advanced RAIR-DTC with less adverse reactions. The efficacy of anlotinib reaches the strongest at around 12-18 weeks and becomes stable at 24 weeks. No effect of anlotinib on inducing redifferentiation of RAIR-DTC cells and enhancing iodine uptake is found.
6.The short-term efficacy of left-sided three-port total laparoscopic distal gastrectomy: a pros-pective study
Qinchuan YANG ; Haikun ZHOU ; Chao YUE ; Di TANG ; Weidong WANG ; Ruiqi GAO ; Zhenchang MO ; Panpan JI ; Zhiyu GUO ; Changming ZHANG ; Yannian WANG ; Juan YU ; Xiangxiang GAO ; Pengfei YU ; Jiangpeng WEI ; Xiaohua LI ; Gang JI
Chinese Journal of Digestive Surgery 2023;22(9):1120-1128
Objective:To investigate the short-term efficacy of left-sided three-port total laparoscopic distal gastrectomy (TPTLDG).Methods:The prospective randomized controlled study was conducted. The 68 patients undergoing laparoscopic distal gastrectomy in the First Affiliated Hospital of Air Force Medical University from March 2022 to March 2023 were collected. All patients were randomly assigned to the TPTLDG group with a double number, and to the five-port laparoscopic distal gastrectomy (FPLDG) group with a single number, respectively. Observation indicators: (1) grouping situations of the enrolled patients; (2) comparison of perioperative condition; (3) comparison of complications during postoperative 30 days; (4) comparison of pathological examination. Measure-ment data with normal distribution were represented as Mean± SD, and comparison between groups was conducted using the independent sample t test. Measurement data with skewed distribution were represented as M( Q1, Q3), and comparison between groups was conducted using the Mann-Whitney U test. Count data were described as absolute numbers, and comparison between groups was conducted using the chi-square test or continuous correction chi-square test. Comparison of ordinal data was analyzed using the non‐parameter rank sum test. Results:(1) Grouping situations of the enrolled patients. A total of 59 patients of gastric cancer were selected for eligibility. There were 40 males and 19 females, aged 59.00(52.00, 67.00)years. The gender (male, female), age, body mass index (BMI), Caprini score (≤2, ≥3), nutritional risk screening 2002 (<3, ≥3), Eastern Coopera-tive Oncology Group performance status (0, 1), preoperative hypersensitive C-reactive protein, preoperative IL-6, preoperative white blood cell count, preoperative albumin were 19, 11, 59.00(51.25,65.25)years, 21.92(20.93,22.73)kg/m 2, 7, 23, 24, 6, 18, 12, 0.78(0.78,1.46)mg/L, 3.07(1.50,10.56)μg/L, 6.07(4.94,7.19)×10 9/L, 44.30(40.83, 46.15) g/L in the 30 patients of TPTLDG group, versus 21, 8, 57.00(51.00, 67.00)years, 21.90(20.95, 23.35)kg/m 2, 11, 18, 24, 5, 17, 12, 1.13(0.78,11.40)mg/L, 5.56(1.88,15.12)μg/L, 5.54(4.71,6.70)×10 9/L, 43.55(40.25,44.88)g/L in the 29 patients of FPLDG group, showing no significant difference in the above indicators between the two groups ( χ2=0.557, Z=-0.444, -0.805, χ2=1.482, 0.074, 0.012, Z=-1.259, -1.262, -0.819, -1.199, P>0.05), confounding bias ensured comparability between the two groups. (2) Comparison of perioperative condition. The length of incision, time to removing drainage tube, IL-6 at postoperative day 3, cost of hospital stay were 6.65(6.48,6.93)cm, 3.00(0,3.00)days, 29.18 (13.67, 43.53)μg/L, 84 164.15(73 084.72, 96 782.14)yuan in the TPTLDG group, versus 8.00(7.50,8.35)cm, 3.00(3.00,4.00)days, 47.56(21.31,85.79)μg/L, 92 120.43(87 069.33, 113 089.74)yuan in the FPLDG group, showing significant differences in the above indicators between the two groups ( Z=-11.065, -2.141, -2.940, -2.220, P<0.05). (3) Comparison of complications during postoperative 30 days. The incidence rate of complications during postoperative 30 days was 30.00%(9/30) and 24.14%(7/29) in the TPTLDG group and FPLDG group, respectively, showing no significant difference between the two groups ( χ2=0.256, P>0.05). (4) Comparison of pathological examination. Cases with pathological N staging as 0 stage, 1 stage, 2 stage, 3 stage were 22, 2, 4, 2 in the TPTLDG group, versus 13, 7, 4, 5 in the FPLDG group, showing a significant difference between the two groups ( Z=-2.021, P<0.05). Conclusion:TPTLDG is safe and feasible for gastric cancer, with a good short-term efficacy.
7.Research progress of epileptic seizure predictions based on electroencephalogram signals.
Changming HAN ; Fulai PENG ; Cai CHEN ; Wenchao LI ; Xikun ZHANG ; Xingwei WANG ; Weidong ZHOU
Journal of Biomedical Engineering 2021;38(6):1193-1202
As a common disease in nervous system, epilepsy is possessed of characteristics of high incidence, suddenness and recurrent seizures. Timely prediction with corresponding rescues and treatments can be regarded as effective countermeasure to epilepsy emergencies, while most accidental injuries can thus be avoided. Currently, how to use electroencephalogram (EEG) signals to predict seizure is becoming a highlight topic in epilepsy researches. In spite of significant progress that made, more efforts are still to be made before clinical applications. This paper reviews past epilepsy studies, including research records and critical technologies. Contributions of machine learning (ML) and deep learning (DL) on seizure predictions have been emphasized. Since feature selection and model generalization limit prediction ratings of conventional ML measures, DL based seizure predictions predominate future epilepsy studies. Consequently, more exploration may be vitally important for promoting clinical applications of epileptic seizure prediction.
Electroencephalography
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Epilepsy/diagnosis*
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Humans
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Machine Learning
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Seizures/diagnosis*
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Signal Processing, Computer-Assisted
8.Oxidized related substance of methionine in compound amino acid injection (18AA-Ⅱ)
Tianshu SHAO ; Changming ZHOU ; Hui LI ; Lei GUO
Journal of China Pharmaceutical University 2021;52(6):713-718
TA method for the content determination of methionine sulfoxide and methionine sulfone in compound amino acid injection (18AA-II) was established in order to investigate their level in 155 batches of this product, and to explore the reason for the generation of these two impurities.The determination was performed on an Agilent Poroshell 120 EC-C18 column with mobile phases of sodium acetate/tetrahydrofuran solution (A) and sodium acetate solution -acetonitrile-methanol (B, 200∶400∶400) (gradient elution) at the flow rate of 0.5 mL/min.The excitation wavelength and the emission wavelength of the fluorescence detector were 233 nm and 441 nm, respectively.The column temperature was 40 °C, and the injection volume was 8 μL.The contents of methionine sulfoxide and methionine sulfone from 155 batches of compound amino acid injection (18AA-II) was determined using this method, and the residual oxygen content was detected by headspace gas analyzer.The results showed that the linear range of methionine sulfoxide and methionine sulfone were 0.128 1-10.250 0 μg/mL (r = 0.999 9) and 0.261 0-10.440 0 μg/mL (r = 0.999 8), respectively.The limits of quantitation were 0.13 μg/mL and 0.26 μg/mL, respectively; the limits of detection were 0.04 μg/mL and 0.09 μg/mL, respectively.RSDs of precision, stability and repetitive test were all lower than 1.3%.The recoveries ranged 98.00%-100.79% (RSD = 1.15%, n = 9) and 98.19%-102.31% (RSD = 1.33%, n = 9).The content level of oxidized related substances from different manufacturers showed significant difference, showing relevance with the residual oxygen content to some extent, yet no significant correlation with the added amount of antioxygen (sodium pyrosulfite).The method is validated to be useful for the content control of methionine sulfoxide and methionine sulfone in compound amino acid injection (18AA-II).It is quite necessary to include the determination of oxidized related substance into the quality specification.Manufacturers should strengthen the control of remaining oxygen in their products.
9.Association between obesity and risk for colorectal advanced adenoma
Jie SHEN ; Miao MO ; Weixing DAI ; Changming ZHOU ; Zezhou WANG ; Guoxiang CAI ; Lianfang ZHAI ; Ye XU ; Ying ZHENG
Chinese Journal of Epidemiology 2020;41(10):1643-1648
Objectives:To understand the association between obesity and the risk for colorectal advanced adenoma.Methods:Community residents aged 45 to 74 who had participated in the Shanghai community-based colorectal cancer (CRC) screening project in 2008 were included in our study. Anthropometries information including body weight, height and risk factors for colorectal advanced adenoma were collected. Results on colonoscopic diagnosis and personal health records were used for supplementary outcome information retrieval. Multivariate Cox proportional hazard regression models were used to evaluate the hazard ratio ( HR) and 95 %CI of obesity on the risk for colorectal advanced adenoma. Results:20 811 residents were followed up for 122 739.36 person-years, with a median follow-up time of 5.87 years. A total of 657 cases of advanced adenomas were identified. After adjusting for potential confounding risk factors such as age, sex, family history of CRC, level of education, marriage, cigarette smoking, alcohol drinking, foods intake including fat, fried or pickled, vegetables and fruits etc., the HR was 1.25 (95 %CI: 1.04-1.51) for obese people when compared with the normal weight persons. Further stratified analysis by age, gender and family history of CRC, results showed that obese people had a much higher risk of colorectal advanced adenoma than those with normal weight (male: HR=1.57, 95 %CI: 1.20-2.04; more than 60- year-old: HR=1.63, 95 %CI: 1.23-2.16). Conclusion:Data from this large scale population-based study revealed that obesity might be an independent risk factor for colorectal advanced adenoma and the risk increases along with the increase of BMI in China.
10.Simultaneous Determination of 14 Elements in Deproteinized Calf Blood Extractives Injection by ICP-MS
Tianshu SHAO ; Changming ZHOU ; Li YU ; Lei GUO
China Pharmacy 2019;30(14):1902-1908
OBJECTIVE: To establish a method for the content determination of 14 elements in Deproteinized calf blood extractives injection. METHODS: Inductively coupled plasma-mass spectrometry (ICP-MS) was adopted. The radiofrequency power was 1 350 W; flow rate of carrier gas (argon) and collision gas (helium) was 1.1 L/min and 4.5 L/min respectively; integration time was 1.5 s; plasma gas flow rate was 18 L/min; depth of sampling was 65 mm; speed of sampling peristaltic pump was 24.0 r/min; data sampling mode was peak-jump acquisition mode; data collection was repeated for 3 times. RESULTS: The linear ranges of Cd, Pb, As, Co, V, Ni, Tl, Ag, Mo, Cu, Cr, Ba and Al were 0.05-50 μg/L (r=0.999 7), 0.05-50 μg/L (r=0.999 7), 0.05-50 μg/L (r=0.999 8)、0.05-50 μg/L (r=0.999 5), 0.05-50 μg/L (r=0.999 5), 0.05-50 μg/L (r=0.999 8), 0.05-50 μg/L (r=0.999 6), 0.05-50 μg/L (r=0.999 5), 0.05-50 μg/L (r=0.999 5), 0.05-50 μg/L (r=0.999 8), 0.05-50 μg/L (r=0.999 6), 0.05-50 μg/L (r=0.999 6), 0.05-50 μg/L (r=0.999 7) and 0.5-70 μg/L (r=0.999 8), respectively. The limits of quantitation were 0.003 1, 0.008 9, 0.016 0, 0.025 0, 0.002 1, 0.006 9, 0.038 1, 0.002 1, 0.005 5, 0.002 0, 0.023 1, 0.005 0, 0.002 0, 0.324 9 μg/L, separately. The limits of determination were 0.000 9, 0.002 7, 0.004 8, 0.007 5, 0.000 6, 0.002 1, 0.011 4, 0.000 6, 0.016 5, 0.000 6, 0.006 9, 0.001 5, 0.000 6, 0.097 5 μg/L, separately. RSDs of precision, stability and repeatability tests were all less than 8%. The recoveries were 87.4%-94.3%(RSD=2.6%, n=9), 110.3%-118.2%(RSD=1.8%,n=9), 89.8%-99.7%(RSD=3.1%,n=9), 77.7%-84.4%(RSD=2.5%,n=9), 105.6%-113.4%(RSD=2.3%,n=9), 106.7%-116.5%(RSD=2.7%,n=9), 89.1%-104.5%(RSD=4.5%,n=9), 105.6%-118.6%(RSD=3.6%,n=9), 77.8%-88.0%(RSD=4.0%,n=9), 106.7%-116.1%(RSD=2.8%,n=9), 88.5%-97.1%(RSD=3.1%,n=9), 80.5%-88.6%(RSD=2.9%,n=9), 85.2%-99.4%(RSD=4.2%,n=9), 97.6%-109.3%(RSD=3.2%,n=9), respectively. CONCLUSIONS: The method is simple, accurate. The precision, stability and repeatability of this method are also good. It is suitable for simultaneous determination of 14 elements in Deproteinized calf blood extractives injection.


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