1.A practice guideline for therapeutic drug monitoring of mycophenolic acid for solid organ transplants.
Shuang LIU ; Hongsheng CHEN ; Zaiwei SONG ; Qi GUO ; Xianglin ZHANG ; Bingyi SHI ; Suodi ZHAI ; Lingli ZHANG ; Liyan MIAO ; Liyan CUI ; Xiao CHEN ; Yalin DONG ; Weihong GE ; Xiaofei HOU ; Ling JIANG ; Long LIU ; Lihong LIU ; Maobai LIU ; Tao LIN ; Xiaoyang LU ; Lulin MA ; Changxi WANG ; Jianyong WU ; Wei WANG ; Zhuo WANG ; Ting XU ; Wujun XUE ; Bikui ZHANG ; Guanren ZHAO ; Jun ZHANG ; Limei ZHAO ; Qingchun ZHAO ; Xiaojian ZHANG ; Yi ZHANG ; Yu ZHANG ; Rongsheng ZHAO
Journal of Zhejiang University. Science. B 2025;26(9):897-914
Mycophenolic acid (MPA), the active moiety of both mycophenolate mofetil (MMF) and enteric-coated mycophenolate sodium (EC-MPS), serves as a primary immunosuppressant for maintaining solid organ transplants. Therapeutic drug monitoring (TDM) enhances treatment outcomes through tailored approaches. This study aimed to develop an evidence-based guideline for MPA TDM, facilitating its rational application in clinical settings. The guideline plan was drawn from the Institute of Medicine and World Health Organization (WHO) guidelines. Using the Delphi method, clinical questions and outcome indicators were generated. Systematic reviews, Grading of Recommendations Assessment, Development, and Evaluation (GRADE) evidence quality evaluations, expert opinions, and patient values guided evidence-based suggestions for the guideline. External reviews further refined the recommendations. The guideline for the TDM of MPA (IPGRP-2020CN099) consists of four sections and 16 recommendations encompassing target populations, monitoring strategies, dosage regimens, and influencing factors. High-risk populations, timing of TDM, area under the curve (AUC) versus trough concentration (C0), target concentration ranges, monitoring frequency, and analytical methods are addressed. Formulation-specific recommendations, initial dosage regimens, populations with unique considerations, pharmacokinetic-informed dosing, body weight factors, pharmacogenetics, and drug-drug interactions are covered. The evidence-based guideline offers a comprehensive recommendation for solid organ transplant recipients undergoing MPA therapy, promoting standardization of MPA TDM, and enhancing treatment efficacy and safety.
Mycophenolic Acid/administration & dosage*
;
Drug Monitoring/methods*
;
Humans
;
Organ Transplantation
;
Immunosuppressive Agents/administration & dosage*
;
Delphi Technique
2.Risk factors for cow's milk protein allergy in infants:a multicenter prospective nested case-control study
Lin HOU ; Zi-Jun MA ; Shuang CHAO ; Zhong-Yuan LI ; Yu ZHANG ; Yi-Jian LIU ; Jun-Hong ZHANG ; Wen-Yan WU ; Jie LIU
Chinese Journal of Contemporary Pediatrics 2024;26(3):230-235
Objective To explore the risk factors associated with cow's milk protein allergy(CMPA)in infants.Methods This study was a multicenter prospective nested case-control study conducted in seven medical centers in Beijing,China.Infants aged 0-12 months were included,with 200 cases of CMPA infants and 799 control infants without CMPA.Univariate and multivariate logistic regression analyses were used to investigate the risk factors for the occurrence of CMPA.Results Univariate logistic regression analysis showed that preterm birth,low birth weight,birth from the first pregnancy,firstborn,spring birth,summer birth,mixed/artificial feeding,and parental history of allergic diseases were associated with an increased risk of CMPA in infants(P<0.05).Multivariate logistic regression analysis revealed that firstborn(OR=1.89,95%CI:1.14-3.13),spring birth(OR=3.42,95%CI:1.70-6.58),summer birth(OR=2.29,95%CI:1.22-4.27),mixed/artificial feeding(OR=1.57,95%CI:1.10-2.26),parental history of allergies(OR=2.13,95%CI:1.51-3.02),and both parents having allergies(OR=3.15,95%CI:1.78-5.56)were risk factors for CMPA in infants(P<0.05).Conclusions Firstborn,spring birth,summer birth,mixed/artificial feeding,and a family history of allergies are associated with an increased risk of CMPA in infants.[Chinese Journal of Contemporary Pediatrics,2024,26(3):230-235]
3.Network Meta-analysis of comparative efficacy of Chinese medicine injections for dilated cardiomyopathy.
Shi-Yi TAO ; Lin-Tong YU ; Jun LI ; Yong-Hao LI ; Xuan-Chun HUANG ; Tian-Tian XUE ; De-Shuang YANG ; Chao-Nan ZHENG
China Journal of Chinese Materia Medica 2024;49(22):6198-6213
Bayesian network Meta-analysis was conducted to assess the efficacy and safety of different Chinese medicine injections for dilated cardiomyopathy(DCM). CNKI, Wanfang, VIP, SinoMed, PubMed, Web of Science, EMbase, Cochrane Library, ProQuest, Cochrane Central Register of Controlled Trials, ClinicalTrials.gov were searched for the randomized controlled trial(RCT) from the inception to January 2024. The quality of the included RCT was evaluated using the Cochrane's risk of bias assessment tool, and the quality of evidence for outcomes was assessed by GRADE. Stata 16.0 and RevMan 5.4 softwares were used for Meta-analysis. A total of 57 RCTs involving 4 812 subjects, 6 Chinese medicine injections and 6 outcome indicators were included. Bayesian network Meta-analysis indicated that:(1) In terms of increasing clinical total effectiveness rate, except Shenqi Fuzheng Injection + conventional western medicine, other 5 Chinese medicine injections combined with conventional western medicine outperformed conventional western medicine alone, and Xinmailong Injection + conventional western medicine had the best effect.(2) In terms of improving left ventricular ejection fraction, all of the 6 Chinese medicine injections combined with conventional western medicine were superior to conventional western medicine alone, and Shengmai Injection + conventional western medicine had the highest likelihood of being the best intervention.(3) On account of reducing left ventricular end-diastolic dimension, Shenfu Injection + conventional western medicine, Shenmai Injection + conventional western medicine, Huangqi Injection + conventional western medicine, and Xinmailong Injection + conventional western medicine outperformed conventional western medicine alone except Shengmai Injection + conventional western medicine, and Huangqi Injection + conventional western medicine had the highest probability of being the best treatment.(4) In terms of decreasing BNP, Huangqi Injection + conventional western medicine, Shenfu Injection + conventional western medicine, and Shenmai Injection + conventional western medicine were better than conventional western medicine alone, and Huangqi Injection + conventional western medicine had the highest likelihood of being the best treatment.(5) Considering the improvement in 6-min walk test, Shenmai Injection + conventional western medicine were superior to conventional western medicine alone.(6) In the case of improving cardiac output, Shenmai Injection + conventional western medicine, Shengmai Injection + conventional western medicine, Xinmailong Injection + conventional western medicine, and Shenqi Fuzheng Injection + conventional western medicine outperformed conventional western medicine alone except Shenfu Injection + conventional western medicine, thereinto, Shenmai Injection + conventional western medicine might be the optimal choice for increasing cardiac output level.(7) For safety, no statistically significant difference in adverse events was recorded between the experimental group and the control group(P=0.24). Bayesian network Meta-analysis showed that the addition of Chinese medicine injections to conventional western medicine exerted a more positive effect for DCM, and had advantages in alleviating clinical symptoms and improving cardiac function. However, due to the overall low quality of the included articles, the low inclusion of certain Chinese medicine injections, and the lack of direct comparison between different Chinese medicine injections, the results need to be further confirmed.
Humans
;
Bayes Theorem
;
Cardiomyopathy, Dilated/physiopathology*
;
Drugs, Chinese Herbal/administration & dosage*
;
Injections
;
Randomized Controlled Trials as Topic
;
Treatment Outcome
4.Comparative study on pathological characteristics of four different antigen-induced rheumatoid arthritis mouse models
Chao YANG ; Zhi-xing HU ; Shuang-rong GAO ; Ze-ran YAN ; Luo-chang-ting FANG ; Xiao-xiao WANG ; Qun LI ; Qing-wen TAO ; Chun-fang LIU ; Na LIN
Acta Pharmaceutica Sinica 2023;58(6):1586-1595
Rheumatoid arthritis (RA) is an autoimmune disease driven by antigens and mediated by T cells. Collagen II (CII) and fibrinogen (Fib) are the two main antigens in the pathogenesis of RA. The antigen produced after citrulline modification (Cit) is also one of the inducements to induce the body to produce a pathogenic anti-citrulline protein antibody (ACPA). To provide a reference for RA-related research, this study intends to establish an RA animal model by using CII, Cit-CII, Fib, and Cit-Fib antigens, emulsification with complete Freund's adjuvant and immunization with DBA/1 mice, respectively, to compare the pathological characteristics of RA models induced by different antigens from the aspects of pathology, imaging and serum biochemistry. Animal welfare and experimental process are in accordance with the regulations of the Experimental Animal Ethics Committee of the China Academy of Chinese Medical Sciences. The results showed that the CII, Cit-CII, and Cit-Fib induced mice all had symptoms such as joint redness and swelling, and toe deformation and the clinical score and incidence rate were higher than those of the normal group. The CII group had the most serious lesions, with a incidence rate of 100%, and the Cit-CII and Cit-Fib groups had mild symptoms, with a incidence rate of 25% and 37.5%, respectively; pathological and imaging examination results showed that the joints of mice in CII-induced group showed severe synovial inflammation, cartilage and bone destruction, while those in Cit-CII and Cit-Fib group showed only slight inflammatory infiltration, joint cavity stenosis and bone destruction; the results of serum antibody detection showed that CII, Cit-CII and Cit-Fib groups all produced high levels of anti-cyclic citrullinated peptide (CCP) antibodies, among which, Cit-Fib group > Cit-CII group > CII group > Fib group, and both Cit-CII and Cit-Fib groups produced high levels of citrullinated epitope-specific antibodies, while the total IgG level was the highest in CII group; serum ELISA and RT-PCR analysis of joint tissue showed that the expression of pro-inflammatory factors and bone destruction-related molecules increased most significantly in the CII-induced group, followed by Cit-Fib and Cit-CII. The above results showed that among the four different antigens, the symptoms and conditions of arthritis in RA mice induced by CII were the most serious, and IgG instead of anti-CCP antibody was its typical immunological feature, and CII could be the first choice for the model of RA mice; Cit-Fib has certain immunogenicity, can partially induce the symptoms and conditions of RA arthritis in mice, and produce high-level anti-CCP antibody and anti-Cit-Fib antibody, which is more suitable for the study of citrulline-related RA; although Cit-CII has certain immunogenicity, the incidence, and severity of RA arthritis induced by Cit-CII in mice are low.
5.Clinical Characteristics and Survival Analysis of Carbapenem-Resistant Pseudomonas Aeruginosa Colonized or Infected Patients with Hematological Disorders.
Ying-Ying SHEN ; Yue-Chao ZHAO ; Bo WANG ; Di-Jiong WU ; Qiu-Shuang LI ; Yi-Ping SHEN ; Jian-Ping SHEN ; Jun-Min CAO ; Sheng-Yun LIN ; Bao-Dong YE
Journal of Experimental Hematology 2023;31(4):1192-1198
OBJECTIVE:
To observe the clinical characteristics and impact on mortality of carbapenem-resistant Pseudomonas aeruginosa (CRPA) colonized or infected patients with hematological disorders in order to provide evidence for the prevention and treatment of CRPA.
METHODS:
The patients who were colonized or infected with CRPA in the Department of Hematology of The First Affiliated Hospital of Zhejiang Chinese Medical University from January 2020 to March 2021 were selected as the research subjects, the clinical data such as hospitalization time, primary disease treatment regimen, granulocyte count, previous infection and antibiotic regimen of these patients were analyzed, meanwhile, antibiotic regimen and efficacy during CRPA infection, 30-day and long-term survival were also analyzed.
RESULTS:
A total of 59 patients were included in this study, and divided into CRPA infection group (43 cases) and CRPA colonization group (16 cases). Univariate logistic regression analysis showed that ECOG score (P =0.003), agranulocytosis (P <0.001), and exposure to upper than 3rd generations of cephalosporins and tigecycline within 30 days (P =0.035, P =0.017) were the high-risk factors for CRPA infection. Multivariate logistic regression analysis showed that ECOG score of 3/4 ( OR=10.815, 95%CI: 1.260-92.820, P =0.030) and agranulocytosis ( OR=13.82, 95%CI: 2.243-85.176, P =0.005) were independent risk factors for CRPA infection. There was a statistically significant difference in cumulative survival rate between CRPA colonization group and CRPA infection group ( χ2=14.134, P < 0.001). Kaplan-Meier survival analysis showed that the influencing factors of 30-day survival in patients with CRPA infection were agranulocytosis (P =0.022), soft tissue infection (P =0.03), and time of hospitalization before CRPA infection (P =0.041). Cox regression analysis showed that agranulocytosis was an independent risk factor affecting 30-day survival of patients with CRPA infection (HR=3.229, 95%CI :1.093-3.548, P =0.034).
CONCLUSIONS
Patients with hematological disorders have high mortality and poor prognosis after CRPA infection. Bloodstream infection and soft tissue infection are the main causes of death. Patients with high suspicion of CRPA infection and high-risk should be treated as soon as possible.
Humans
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Carbapenems/therapeutic use*
;
Pseudomonas aeruginosa
;
Soft Tissue Infections/drug therapy*
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Anti-Bacterial Agents/therapeutic use*
;
Hematologic Diseases
;
Survival Analysis
6.Efficacy and safety of LY01005 versus goserelin implant in Chinese patients with prostate cancer: A multicenter, randomized, open-label, phase III, non-inferiority trial.
Chengyuan GU ; Zengjun WANG ; Tianxin LIN ; Zhiyu LIU ; Weiqing HAN ; Xuhui ZHANG ; Chao LIANG ; Hao LIU ; Yang YU ; Zhenzhou XU ; Shuang LIU ; Jingen WANG ; Linghua JIA ; Xin YAO ; Wenfeng LIAO ; Cheng FU ; Zhaohui TAN ; Guohua HE ; Guoxi ZHU ; Rui FAN ; Wenzeng YANG ; Xin CHEN ; Zhizhong LIU ; Liqiang ZHONG ; Benkang SHI ; Degang DING ; Shubo CHEN ; Junli WEI ; Xudong YAO ; Ming CHEN ; Zhanpeng LU ; Qun XIE ; Zhiquan HU ; Yinhuai WANG ; Hongqian GUO ; Tiwu FAN ; Zhaozhao LIANG ; Peng CHEN ; Wei WANG ; Tao XU ; Chunsheng LI ; Jinchun XING ; Hong LIAO ; Dalin HE ; Zhibin WU ; Jiandi YU ; Zhongwen FENG ; Mengxiang YANG ; Qifeng DOU ; Quan ZENG ; Yuanwei LI ; Xin GOU ; Guangchen ZHOU ; Xiaofeng WANG ; Rujian ZHU ; Zhonghua ZHANG ; Bo ZHANG ; Wanlong TAN ; Xueling QU ; Hongliang SUN ; Tianyi GAN ; Dingwei YE
Chinese Medical Journal 2023;136(10):1207-1215
BACKGROUND:
LY01005 (Goserelin acetate sustained-release microsphere injection) is a modified gonadotropin-releasing hormone (GnRH) agonist injected monthly. This phase III trial study aimed to evaluated the efficacy and safety of LY01005 in Chinese patients with prostate cancer.
METHODS:
We conducted a randomized controlled, open-label, non-inferiority trial across 49 sites in China. This study included 290 patients with prostate cancer who received either LY01005 or goserelin implants every 28 days for three injections. The primary efficacy endpoints were the percentage of patients with testosterone suppression ≤50 ng/dL at day 29 and the cumulative probability of testosterone ≤50 ng/dL from day 29 to 85. Non-inferiority was prespecified at a margin of -10%. Secondary endpoints included significant castration (≤20 ng/dL), testosterone surge within 72 h following repeated dosing, and changes in luteinizing hormone, follicle-stimulating hormone, and prostate specific antigen levels.
RESULTS:
On day 29, in the LY01005 and goserelin implant groups, testosterone concentrations fell below medical-castration levels in 99.3% (142/143) and 100% (140/140) of patients, respectively, with a difference of -0.7% (95% confidence interval [CI], -3.9% to 2.0%) between the two groups. The cumulative probabilities of maintaining castration from days 29 to 85 were 99.3% and 97.8%, respectively, with a between-group difference of 1.5% (95% CI, -1.3% to 4.4%). Both results met the criterion for non-inferiority. Secondary endpoints were similar between groups. Both treatments were well-tolerated. LY01005 was associated with fewer injection-site reactions than the goserelin implant (0% vs . 1.4% [2/145]).
CONCLUSION:
LY01005 is as effective as goserelin implants in reducing testosterone to castration levels, with a similar safety profile.
TRIAL REGISTRATION
ClinicalTrials.gov, NCT04563936.
Humans
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Male
;
Antineoplastic Agents, Hormonal/therapeutic use*
;
East Asian People
;
Gonadotropin-Releasing Hormone/agonists*
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Goserelin/therapeutic use*
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Prostate-Specific Antigen
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Prostatic Neoplasms/drug therapy*
;
Testosterone
7. Anthrahydroquinone-2,6-disulfonate alleviates paraquat-induced kidney injury via the apelin-APJ pathway in rats
Qi LI ; Tang DENG ; Qi-Feng HUANG ; Shuang-Qin XU ; Hang-Fei WANG ; Xin-Xin WU ; Nan LI ; Yang YI ; Ji-Chao PENG ; Yue HUANG ; Jin QIAN ; Xiao-Ran LIU ; Bo WANG ; Kai-Wen LIN
Asian Pacific Journal of Tropical Biomedicine 2022;12(8):333-342
Objective: To explore the protective effects of anthrahydroquinone-2,6-disulfonate (AH 2 QDS) on the kidneys of paraquat (PQ) poisoned rats via the apelin-APJ pathway. Methods: Male Sprague Dawley rats were divided into four experimental groups: control, PQ, PQ+sivelestat, and PQ+AH 2 QDS. The PQ+sivelestat group served as the positive control group. The model of poisoning was established via intragastric treatment with a 20% PQ pesticide solution at 200 mg/kg. Two hours after poisoning, the PQ+sivelestat group was treated with sivelestat, while the PQ+AH 2 QDS group was given AH 2 QDS. Six rats were selected from each group on the first, third, and seventh days after poisoning and dissected after anesthesia. The PQ content of the kidneys was measured using the sodium disulfite method. Hematoxylin-eosin staining of renal tissues was performed to detect pathological changes. Apelin expression in the renal tissues was detected using immunofluorescence. Western blotting was used to detect the expression levels of the following proteins in the kidney tissues: IL-6, TNF-α, apelin-APJ (the apelin-Angiotensin receptor), NF-κB p65, caspase-1, caspase-8, glucose-regulated protein 78 (GRP78), and the C/EBP homologous protein (CHOP). In in vitro study, a PQ toxicity model was established using human tubular epithelial cells treated with standard PQ. Twenty-four hours after poisoning, sivelestat and AH 2 QDS were administered. The levels of oxidative stress in human renal tubular epithelial cells were assessed using a reactive oxygen species fluorescence probe. Results: The PQ content in the kidney tissues of the PQ group was higher than that of the PQ+AH 2 QDS group. Hematoxylin-eosin staining showed extensive hemorrhage and congestion in the renal parenchyma of the PQ group. Vacuolar degeneration of the renal tubule epithelial cells, deposition of crescent-like red staining material in renal follicles, infiltration by a few inflammatory cells, and a small number of cast formation were also observed. However, these pathological changes were less severe in the PQ+sivelestat group and the PQ+AH 2 QDS group (P<0.05). On the third day after poisoning, immunofluorescence assay showed that the level of apelin in the renal tissues was significantly higher in the PQ+AH 2 QDS group than in the PQ group. Western blotting analysis results showed that IL-6, TNF-α, NF-κB p65, caspase-1, caspase-8, GRP78, and CHOP protein levels in the PQ group were higher than in the PQ+AH 2 QDS group (P<0.05). The expression of apelin-APJ proteins in the PQ+AH 2 QDS group was higher than in the PQ+sivelestat and PQ groups (P<0.05); this difference was significant on Day 3 and Day 7. The level of oxidative stress in the renal tubular epithelial cells of the PQ+AH 2 QDS group and the PQ+sivelestat group was significantly lower than in the PQ group (P<0.05). Conclusions: This study confirms that AH 2 QDS has a protective effect on PQ-poisoned kidneys and its positive effect is superior to that of sivelestat. The mechanism of the protective effects of AH 2 QDS may be linked to reduction in cellular oxidative stress, PQ content of renal tissue, inflammatory injury, endoplasmic reticulum stress, and apoptosis. AH 2 QDS may play a role in the treatment of PQ poisoning by upregulating the expression of the apelin-APJ.
8.Characteristics and related factors of viral nucleic acid negative conversion in children infected with Omicron variant strain of SARS-CoV-2.
Rong YIN ; Quan LU ; Jia Li JIAO ; Kai LIN ; Chao WANG ; Lang YUAN ; Ying DING ; Na DONG ; Bing Jie WANG ; Yan Hua NIU ; Yong Shuang FANG ; Wei LIU ; Yi Fan SUN ; Bing ZOU ; Xiao E ZHANG ; Pei XIAO ; Lei SUN ; Xin DU ; Ying Ying ZHU ; Xiao Yan DONG
Chinese Journal of Pediatrics 2022;60(12):1307-1311
Objective: To understand the characteristics and associated factors of viral nucleic acid conversion in children infected with Omicron variant strain of SARS-CoV-2 in Shanghai. Methods: The clinical symptoms, laboratory results and other data of 177 children infected with SARS-CoV-2 who were hospitalized in Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University (designated hospital for SARS-CoV-2 infection in Shanghai) from April 25 to June 8, 2022 were retrospectively analyzed. According to the chest imaging findings, the children were divided into mild and common type groups. According to their age, the unvaccinated children were divided into<3 years old group and 3-<18 years old group. According to the vaccination status, the children aged 3-<18 year were divided into non-vaccination group, 1-dose vaccination group and 2-dose vaccination group. Comparison between groups was performed by independent sample t-test and analysis of variance, and multivariate linear regression analysis was used for multivariate analysis. Results: Among the 177 children infected with Omicron variant of SARS-CoV-2, 96 were males and 81 were females, aged 3 (1, 6) years. The time of viral nucleic acid negative conversion was (10.3±3.1) days. The 177 children were 138 cases of mild type and 39 cases of common type. Among the children aged 3-<18 years old, 55 cases were not vaccinated, 5 cases received 1-dose and 36 cases received 2-dose vaccination. Among the 36 children who received 2 doses of vaccination, the time of viral nucleic acid negative conversion was shorter in those vaccinated within 6 months than those over 6 months ((7.1±1.9) vs. (10.8±3.0) d, t=-3.23, P=0.004). Univariate analysis showed that the time of nucleic acid negative conversion of SARS-CoV-2 was associated with age, underlying diseases, gastrointestinal symptoms, white blood cell count, proportion of neutrophils, proportion of lymphocytes, and the number of doses of SARS-CoV-2 vaccine (t=3.87, 2.55, 2.04, 4.24, 3.51, 2.92, F=16.27, all P<0.05). Multiple linear regression analysis showed that older age (β=-0.33, 95% CI -0.485--0.182, P<0.001) and more doses of vaccination (β=-0.79, 95% CI -1.463--0.120, P=0.021) were associated with shortened nucleic acid negative conversion time in children, while lower lymphocyte proportion (β=-0.02, 95% CI -0.044--0.002, P=0.031) and underlying diseases (β=1.52, 95% CI 0.363-2.672, P=0.010) were associated with prolonged nucleic acid negative conversion time in children. Conclusion: The children infected with Omicron variant of SARS-CoV-2 with reduced lymphocyte proportion and underlying diseases may have longer time of viral nucleic acid negative conversion,while children with older age and more doses of vaccination may have shorter time of viral nucleic acid negative conversion.
Child
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Female
;
Male
;
Humans
;
Child, Preschool
;
Adolescent
;
SARS-CoV-2
;
COVID-19 Vaccines
;
Nucleic Acids
;
COVID-19
;
Retrospective Studies
;
China/epidemiology*
;
Translocation, Genetic
;
Hospitals, Pediatric
9.Identification of geographical origins of Cordyceps based on data of amino acids with self-organizing map neural network.
Yan SHI ; Feng WEI ; Gang-Li WANG ; Shuang-Cheng MA ; Rui-Chao LIN
China Journal of Chinese Materia Medica 2021;46(18):4765-4773
In this study, data of amino acids of Cordyceps samples from Qinghai and Tibet was analyzed with self-organizing map neural network. A model of XY-Fused network was established with the content of 8 major amino acids and total amino acids for the identification of geographical origins of Cordyceps from Qinghai and Tibet. It had the prediction accuracy of 83.3% for the test set. In addition, data mining indicated that methionine was a special kind of amino acid in Cordyceps which could serve as a marker to identify its geographical origins. On this basis, the content ratio of methionine to total amino acids was proposed to be a quantifiable indicator to distinguish Cordyceps from Qinghai and Tibet.
Amino Acids
;
Cordyceps/genetics*
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Geography
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Neural Networks, Computer
;
Tibet
10. A multi-center clinical study on the relationship between dry weight and protein energy wasting in patients with maintenance hemodialysis
Shu-wen QIE ; Qin-ning WU ; Qian LI ; Xin LIN ; Chao-min ZHOU ; Shuang CHEN ; Yan ZHA
Chinese Journal of Practical Internal Medicine 2019;39(09):796-799
OBJECTIVE: To explore the relationship between dry weight setting and the related parameters of PEW of multicenter hemodialysis patients in Guizhou. in order to provide the basis for setting dry weight in patients. METHODS: We conducted the research in patients of 11 hemodialysis center in Guizhou province. We collected demographic data(age, gender, nationality, marital status, education level, income status and so on) by questionnaire; are collected dry weight, ECW, ICW, fat mass,lean body mass and so on by bioelectrical impedance analysis, and then we also collected physical measurement indexes, such as waist circumference, hip circumference, medium arm circumference(MAC), tricep fold thickness(TSF)and crus diameter. The data is divided into three groups according to the dry weight setings. Group 1: dry weight setting was slightly lower(dry weight setted by doctors was slightly lower than bioelectrical impedance analysis results,withen 1 kg); group 2: dry weight setting was normal; group 3: dry weight setting slightly higher group(dry weight setted by doctors was slightly higher than bioelectrical impedance analysis results,withen 1 kg). We used Chi-square analysis to analyze PEW prevalence, compared differences of the PEW indications by variance analysis, and then we used Spearman correlation analysis to analyze the correlation between PEW and the indications. Influence of various factors on the PEW was analyzed by logistic regression analysis. RESULTS: The PEW morbidity of group 3 was higher than the other two groups. PEW indicators such as upper arm midpoint diameter, tricep fold thickness, hip circumference, fat mass, BMI, Hb, Alb and prealbumin were lower than the other two groups, the difference being statistically significant(P<0.05). Correlation analysis results show that the degree of the factors associated with the PEW was as follows in turn BMI(r=-0.677, P<0.05), dry weight(r=0.636, P<0.05), upper arm midpoint diameter(r=-0.589, P<0.05), albumin(r=-0.562, P<0.05) and hip circumference(r=-0.475, P<0.05). Logistic regression showed that the factors affecting PEW were albumin(OR = 0.883, 95%CI: 0.782-0.997, P<0.05), BMI(OR = 0.671, 95%CI: 0.509-0.884, P<0.05), upper arm midpoint diameter(OR = 0.457, 95% CI: 0.318-0.655, P<0.05) and dry weight(OR = 1.191, 95%CI: 1.041-1.363, P<0.05). CONCLUSION: The dry weight setting too high, insufficient amount of ultrafiltration and inadequate dialysis can increase the occurrence of PEW.

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